/*
* This file is part of cparser.
- * Copyright (C) 2007-2008 Matthias Braun <matze@braunis.de>
+ * Copyright (C) 2007-2009 Matthias Braun <matze@braunis.de>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
#include <assert.h>
#include <string.h>
#include <stdbool.h>
+#include <unistd.h>
+#include <limits.h>
#include <libfirm/firm.h>
#include <libfirm/adt/obst.h>
+#include <libfirm/be.h>
#include "ast2firm.h"
#include "adt/error.h"
#include "adt/array.h"
+#include "adt/strutil.h"
+#include "adt/util.h"
#include "symbol_t.h"
#include "token_t.h"
#include "type_t.h"
#include "ast_t.h"
+#include "entity_t.h"
#include "parser.h"
#include "diagnostic.h"
#include "lang_features.h"
#include "types.h"
+#include "type_hash.h"
+#include "mangle.h"
+#include "walk.h"
+#include "warning.h"
+#include "printer.h"
+#include "entitymap_t.h"
#include "driver/firm_opt.h"
-#include "driver/firm_cmdline.h"
-#define MAGIC_DEFAULT_PN_NUMBER (long) -314159265
+typedef struct trampoline_region trampoline_region;
+struct trampoline_region {
+ ir_entity *function; /**< The function that is called by this trampoline */
+ ir_entity *region; /**< created region for the trampoline */
+};
-static ir_type *ir_type_const_char;
-static ir_type *ir_type_wchar_t;
-static ir_type *ir_type_void;
-static ir_type *ir_type_int;
+fp_model_t firm_fp_model = fp_model_precise;
-static type_t *type_const_char;
+static const backend_params *be_params;
-static int next_value_number_function;
-static ir_node *continue_label;
-static ir_node *break_label;
-static ir_node *current_switch_cond;
-static bool saw_default_label;
-static ir_node **imature_blocks;
+static ir_type *ir_type_char;
+static ir_type *ir_type_const_char;
+static ir_type *ir_type_wchar_t;
-static const declaration_t *current_function_decl;
-static ir_node *current_function_name;
-static ir_node *current_funcsig;
+/* architecture specific floating point arithmetic mode (if any) */
+static ir_mode *mode_float_arithmetic;
+
+/* alignment of stack parameters */
+static unsigned stack_param_align;
+
+static int next_value_number_function;
+static ir_node *continue_label;
+static ir_node *break_label;
+static ir_node *current_switch;
+static bool saw_default_label;
+static label_t **all_labels;
+static entity_t **inner_functions;
+static ir_node *ijmp_list;
+static bool constant_folding;
+
+static const entity_t *current_function_entity;
+static ir_node *current_function_name;
+static ir_node *current_funcsig;
+static ir_graph *current_function;
+static translation_unit_t *current_translation_unit;
+static trampoline_region *current_trampolines;
+static ir_type *current_outer_frame;
+static ir_node *current_static_link;
+static ir_entity *current_vararg_entity;
+
+static entitymap_t entitymap;
static struct obstack asm_obst;
typedef enum declaration_kind_t {
DECLARATION_KIND_UNKNOWN,
- DECLARATION_KIND_FUNCTION,
DECLARATION_KIND_VARIABLE_LENGTH_ARRAY,
DECLARATION_KIND_GLOBAL_VARIABLE,
DECLARATION_KIND_LOCAL_VARIABLE,
DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
+ DECLARATION_KIND_PARAMETER,
+ DECLARATION_KIND_PARAMETER_ENTITY,
+ DECLARATION_KIND_FUNCTION,
DECLARATION_KIND_COMPOUND_MEMBER,
- DECLARATION_KIND_LABEL_BLOCK,
- DECLARATION_KIND_ENUM_ENTRY
+ DECLARATION_KIND_INNER_FUNCTION
} declaration_kind_t;
-static ir_type *get_ir_type(type_t *type);
-static int count_decls_in_stmts(const statement_t *stmt);
+static ir_type *get_ir_type_incomplete(type_t *type);
-ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
+static void enqueue_inner_function(entity_t *entity)
{
- const declaration_t *declaration = get_irg_loc_description(irg, pos);
-
- warningf(&declaration->source_position,
- "variable '%#T' might be used uninitialized",
- declaration->type, declaration->symbol);
- return new_r_Unknown(irg, mode);
+ if (inner_functions == NULL)
+ inner_functions = NEW_ARR_F(entity_t *, 0);
+ ARR_APP1(entity_t*, inner_functions, entity);
}
-unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
+static ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
{
- const source_position_t *pos = (const source_position_t*) dbg;
- if(pos == NULL)
- return 0;
- return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
- pos->linenr);
+ const entity_t *entity = get_irg_loc_description(irg, pos);
+
+ if (entity != NULL) {
+ source_position_t const *const pos = &entity->base.source_position;
+ warningf(WARN_UNINITIALIZED, pos, "'%N' might be used uninitialized", entity);
+ }
+ return new_r_Unknown(irg, mode);
}
-const char *dbg_retrieve(const dbg_info *dbg, unsigned *line)
+static src_loc_t dbg_retrieve(const dbg_info *dbg)
{
- const source_position_t *pos = (const source_position_t*) dbg;
- if(pos == NULL)
- return NULL;
- if(line != NULL)
- *line = pos->linenr;
- return pos->input_name;
+ source_position_t const *const pos = (source_position_t const*)dbg;
+ if (pos) {
+ return (src_loc_t){ pos->input_name, pos->lineno, pos->colno };
+ } else {
+ return (src_loc_t){ NULL, 0, 0 };
+ }
}
static dbg_info *get_dbg_info(const source_position_t *pos)
return (dbg_info*) pos;
}
-static unsigned unique_id = 0;
+static void dbg_print_type_dbg_info(char *buffer, size_t buffer_size,
+ const type_dbg_info *dbg)
+{
+ assert(dbg != NULL);
+ print_to_buffer(buffer, buffer_size);
+ const type_t *type = (const type_t*) dbg;
+ print_type(type);
+ finish_print_to_buffer();
+}
-static ident *unique_ident(const char *tag)
+static type_dbg_info *get_type_dbg_info_(const type_t *type)
{
- char buf[256];
+ return (type_dbg_info*) type;
+}
- snprintf(buf, sizeof(buf), "%s.%u", tag, unique_id);
- unique_id++;
- return new_id_from_str(buf);
+/* is the current block a reachable one? */
+static bool currently_reachable(void)
+{
+ ir_node *const block = get_cur_block();
+ return block != NULL && !is_Bad(block);
}
-static ir_mode *_atomic_modes[ATOMIC_TYPE_LAST+1];
+static void set_unreachable_now(void)
+{
+ set_cur_block(NULL);
+}
-static ir_mode *mode_int, *mode_uint;
+ir_mode *atomic_modes[ATOMIC_TYPE_LAST+1];
+static ir_node *_expression_to_firm(const expression_t *expression);
static ir_node *expression_to_firm(const expression_t *expression);
-static inline ir_mode *get_ir_mode(type_t *type);
+static void create_local_declaration(entity_t *entity);
+
+static unsigned decide_modulo_shift(unsigned type_size)
+{
+ if (architecture_modulo_shift == 0)
+ return 0;
+ if (type_size < architecture_modulo_shift)
+ return architecture_modulo_shift;
+ return type_size;
+}
static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind)
{
unsigned flags = get_atomic_type_flags(kind);
unsigned size = get_atomic_type_size(kind);
- if( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT))
- && !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) {
+ if ((flags & ATOMIC_TYPE_FLAG_FLOAT)
+ && !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) {
+ if (size == 4) {
+ return get_modeF();
+ } else if (size == 8) {
+ return get_modeD();
+ } else {
+ panic("unexpected kind");
+ }
+ } else if (flags & ATOMIC_TYPE_FLAG_INTEGER) {
char name[64];
- mode_sort sort;
unsigned bit_size = size * 8;
bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0;
- mode_arithmetic arithmetic;
- unsigned modulo_shift;
-
- if(flags & ATOMIC_TYPE_FLAG_INTEGER) {
- assert(! (flags & ATOMIC_TYPE_FLAG_FLOAT));
- snprintf(name, sizeof(name), "i%s%d", is_signed?"":"u", bit_size);
- sort = irms_int_number;
- arithmetic = irma_twos_complement;
- modulo_shift = bit_size < machine_size ? machine_size : bit_size;
- } else {
- assert(flags & ATOMIC_TYPE_FLAG_FLOAT);
- snprintf(name, sizeof(name), "f%d", bit_size);
- sort = irms_float_number;
- arithmetic = irma_ieee754;
- modulo_shift = 0;
- }
- return new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
- modulo_shift);
+ unsigned modulo_shift = decide_modulo_shift(bit_size);
+
+ snprintf(name, sizeof(name), "%s%u", is_signed ? "I" : "U", bit_size);
+ return new_int_mode(name, irma_twos_complement, bit_size, is_signed,
+ modulo_shift);
}
return NULL;
*/
static void init_atomic_modes(void)
{
- for(int i = 0; i <= ATOMIC_TYPE_LAST; ++i) {
- _atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i);
+ atomic_modes[ATOMIC_TYPE_VOID] = mode_ANY;
+ for (int i = 0; i <= ATOMIC_TYPE_LAST; ++i) {
+ if (atomic_modes[i] != NULL)
+ continue;
+ atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i);
}
- mode_int = _atomic_modes[ATOMIC_TYPE_INT];
- mode_uint = _atomic_modes[ATOMIC_TYPE_UINT];
-
- /* there's no real void type in firm */
- _atomic_modes[ATOMIC_TYPE_VOID] = mode_int;
-
- /* initialize pointer modes */
- char name[64];
- mode_sort sort = irms_reference;
- unsigned bit_size = machine_size;
- bool is_signed = 0;
- mode_arithmetic arithmetic = irma_twos_complement;
- unsigned modulo_shift
- = bit_size < machine_size ? machine_size : bit_size;
-
- snprintf(name, sizeof(name), "p%d", machine_size);
- ir_mode *ptr_mode = new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
- modulo_shift);
-
- set_reference_mode_signed_eq(ptr_mode, _atomic_modes[get_intptr_kind()]);
- set_reference_mode_unsigned_eq(ptr_mode, _atomic_modes[get_uintptr_kind()]);
-
- /* Hmm, pointers should be machine size */
- set_modeP_data(ptr_mode);
- set_modeP_code(ptr_mode);
-}
-
-static unsigned get_compound_type_size(compound_type_t *type)
-{
- ir_type *irtype = get_ir_type((type_t*) type);
- return get_type_size_bytes(irtype);
-}
-
-static unsigned get_array_type_size(array_type_t *type)
-{
- assert(!type->is_vla);
- ir_type *irtype = get_ir_type((type_t*) type);
- return get_type_size_bytes(irtype);
}
-
-static unsigned get_type_size_const(type_t *type)
+ir_mode *get_atomic_mode(atomic_type_kind_t kind)
{
- type = skip_typeref(type);
-
- switch(type->kind) {
- case TYPE_ERROR:
- panic("error type occured");
- case TYPE_ATOMIC:
- return get_atomic_type_size(type->atomic.akind);
- case TYPE_ENUM:
- return get_mode_size_bytes(mode_int);
- case TYPE_COMPOUND_UNION:
- case TYPE_COMPOUND_STRUCT:
- return get_compound_type_size(&type->compound);
- case TYPE_FUNCTION:
- /* just a pointer to the function */
- return get_mode_size_bytes(mode_P_code);
- case TYPE_POINTER:
- return get_mode_size_bytes(mode_P_data);
- case TYPE_ARRAY:
- return get_array_type_size(&type->array);
- case TYPE_BUILTIN:
- return get_type_size_const(type->builtin.real_type);
- case TYPE_BITFIELD:
- panic("type size of bitfield request");
- case TYPE_TYPEDEF:
- case TYPE_TYPEOF:
- case TYPE_INVALID:
- break;
- }
- panic("Trying to determine size of invalid type");
+ assert(kind <= ATOMIC_TYPE_LAST);
+ return atomic_modes[kind];
}
-static ir_node *get_type_size(type_t *type)
+static ir_node *get_vla_size(array_type_t *const type)
{
- type = skip_typeref(type);
-
- if(is_type_array(type) && type->array.is_vla) {
- ir_node *size_node = type->array.size_node;
- if(size_node == NULL) {
- size_node = expression_to_firm(type->array.size_expression);
- assert(!is_Const(size_node));
- type->array.size_node = size_node;
- }
-
- ir_node *elem_size = get_type_size(type->array.element_type);
- ir_mode *mode = get_irn_mode(size_node);
- ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
- return real_size;
+ ir_node *size_node = type->size_node;
+ if (size_node == NULL) {
+ size_node = expression_to_firm(type->size_expression);
+ type->size_node = size_node;
}
-
- ir_mode *mode = get_ir_mode(type_size_t);
- symconst_symbol sym;
- sym.type_p = get_ir_type(type);
- return new_SymConst(mode, sym, symconst_type_size);
+ return size_node;
}
static unsigned count_parameters(const function_type_t *function_type)
return count;
}
-static ir_type *create_atomic_type(const atomic_type_t *type)
+/**
+ * Creates a Firm type for an atomic type
+ */
+static ir_type *create_atomic_type(atomic_type_kind_t akind, const type_t *type)
{
- dbg_info *dbgi = get_dbg_info(&type->base.source_position);
- atomic_type_kind_t kind = type->akind;
- ir_mode *mode = _atomic_modes[kind];
- unsigned alignment = get_atomic_type_alignment(kind);
- ident *id = get_mode_ident(mode);
- ir_type *irtype = new_d_type_primitive(id, mode, dbgi);
-
- if(type->base.alignment > alignment)
- alignment = type->base.alignment;
+ ir_mode *mode = atomic_modes[akind];
+ type_dbg_info *dbgi = get_type_dbg_info_(type);
+ ir_type *irtype = new_d_type_primitive(mode, dbgi);
+ il_alignment_t alignment = get_atomic_type_alignment(akind);
+ set_type_size_bytes(irtype, get_atomic_type_size(akind));
set_type_alignment_bytes(irtype, alignment);
return irtype;
}
-static ir_type *create_method_type(const function_type_t *function_type)
+/**
+ * Creates a Firm type for a complex type
+ */
+static ir_type *create_complex_type(const atomic_type_t *type)
+{
+ atomic_type_kind_t kind = type->akind;
+ ir_mode *mode = atomic_modes[kind];
+ ident *id = get_mode_ident(mode);
+
+ (void) id;
+
+ /* FIXME: finish the array */
+ return NULL;
+}
+
+/**
+ * Creates a Firm type for an imaginary type
+ */
+static ir_type *create_imaginary_type(const atomic_type_t *type)
+{
+ return create_atomic_type(type->akind, (const type_t*)type);
+}
+
+/**
+ * return type of a parameter (and take transparent union gnu extension into
+ * account)
+ */
+static type_t *get_parameter_type(type_t *orig_type)
+{
+ type_t *type = skip_typeref(orig_type);
+ if (is_type_union(type)
+ && get_type_modifiers(orig_type) & DM_TRANSPARENT_UNION) {
+ compound_t *compound = type->compound.compound;
+ type = compound->members.entities->declaration.type;
+ }
+
+ return type;
+}
+
+static ir_type *create_method_type(const function_type_t *function_type, bool for_closure)
{
- type_t *return_type = function_type->return_type;
+ type_t *return_type = skip_typeref(function_type->return_type);
- ident *id = unique_ident("functiontype");
- int n_parameters = count_parameters(function_type);
- int n_results = return_type == type_void ? 0 : 1;
- dbg_info *dbgi = get_dbg_info(&function_type->base.source_position);
- ir_type *irtype = new_d_type_method(id, n_parameters, n_results, dbgi);
+ int n_parameters = count_parameters(function_type)
+ + (for_closure ? 1 : 0);
+ int n_results = is_type_void(return_type) ? 0 : 1;
+ type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) function_type);
+ ir_type *irtype = new_d_type_method(n_parameters, n_results, dbgi);
- if(return_type != type_void) {
+ if (!is_type_void(return_type)) {
ir_type *restype = get_ir_type(return_type);
set_method_res_type(irtype, 0, restype);
}
function_parameter_t *parameter = function_type->parameters;
int n = 0;
- for( ; parameter != NULL; parameter = parameter->next) {
- ir_type *p_irtype = get_ir_type(parameter->type);
+ if (for_closure) {
+ ir_type *p_irtype = get_ir_type(type_void_ptr);
+ set_method_param_type(irtype, n, p_irtype);
+ ++n;
+ }
+ for ( ; parameter != NULL; parameter = parameter->next) {
+ type_t *type = get_parameter_type(parameter->type);
+ ir_type *p_irtype = get_ir_type(type);
set_method_param_type(irtype, n, p_irtype);
++n;
}
- if(function_type->variadic || function_type->unspecified_parameters) {
+ bool is_variadic = function_type->variadic;
+
+ if (is_variadic)
set_method_variadicity(irtype, variadicity_variadic);
+
+ unsigned cc = get_method_calling_convention(irtype);
+ switch (function_type->calling_convention) {
+ case CC_DEFAULT: /* unspecified calling convention, equal to one of the other, typically cdecl */
+ case CC_CDECL:
+is_cdecl:
+ set_method_calling_convention(irtype, SET_CDECL(cc));
+ break;
+
+ case CC_STDCALL:
+ if (is_variadic)
+ goto is_cdecl;
+
+ /* only non-variadic function can use stdcall, else use cdecl */
+ set_method_calling_convention(irtype, SET_STDCALL(cc));
+ break;
+
+ case CC_FASTCALL:
+ if (is_variadic)
+ goto is_cdecl;
+ /* only non-variadic function can use fastcall, else use cdecl */
+ set_method_calling_convention(irtype, SET_FASTCALL(cc));
+ break;
+
+ case CC_THISCALL:
+ /* Hmm, leave default, not accepted by the parser yet. */
+ break;
}
+ if (for_closure)
+ set_method_calling_convention(irtype, get_method_calling_convention(irtype) | cc_this_call);
+
+ const decl_modifiers_t modifiers = function_type->modifiers;
+ if (modifiers & DM_CONST)
+ add_method_additional_properties(irtype, mtp_property_const);
+ if (modifiers & DM_PURE)
+ add_method_additional_properties(irtype, mtp_property_pure);
+ if (modifiers & DM_RETURNS_TWICE)
+ add_method_additional_properties(irtype, mtp_property_returns_twice);
+ if (modifiers & DM_NORETURN)
+ add_method_additional_properties(irtype, mtp_property_noreturn);
+ if (modifiers & DM_NOTHROW)
+ add_method_additional_properties(irtype, mtp_property_nothrow);
+ if (modifiers & DM_MALLOC)
+ add_method_additional_properties(irtype, mtp_property_malloc);
+
return irtype;
}
static ir_type *create_pointer_type(pointer_type_t *type)
{
- type_t *points_to = type->points_to;
- ir_type *ir_points_to;
- /* Avoid endless recursion if the points_to type contains this poiner type
- * again (might be a struct). We therefore first create a void* pointer
- * and then set the real points_to type
- */
- dbg_info *dbgi = get_dbg_info(&type->base.source_position);
- ir_type *ir_type = new_d_type_pointer(unique_ident("pointer"),
- ir_type_void, mode_P_data, dbgi);
- type->base.firm_type = ir_type;
+ type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) type);
+ type_t *points_to = type->points_to;
+ ir_type *ir_points_to = get_ir_type_incomplete(points_to);
+ ir_type *irtype = new_d_type_pointer(ir_points_to, dbgi);
+
+ return irtype;
+}
- ir_points_to = get_ir_type(points_to);
- set_pointer_points_to_type(ir_type, ir_points_to);
+static ir_type *create_reference_type(reference_type_t *type)
+{
+ type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) type);
+ type_t *refers_to = type->refers_to;
+ ir_type *ir_refers_to = get_ir_type_incomplete(refers_to);
+ ir_type *irtype = new_d_type_pointer(ir_refers_to, dbgi);
- return ir_type;
+ return irtype;
}
static ir_type *create_array_type(array_type_t *type)
{
- type_t *element_type = type->element_type;
- ir_type *ir_element_type = get_ir_type(element_type);
-
- ident *id = unique_ident("array");
- dbg_info *dbgi = get_dbg_info(&type->base.source_position);
- ir_type *ir_type = new_d_type_array(id, 1, ir_element_type, dbgi);
+ type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) type);
+ type_t *element_type = type->element_type;
+ ir_type *ir_element_type = get_ir_type(element_type);
+ ir_type *irtype = new_d_type_array(1, ir_element_type, dbgi);
const int align = get_type_alignment_bytes(ir_element_type);
- set_type_alignment_bytes(ir_type, align);
+ set_type_alignment_bytes(irtype, align);
- if(type->size_constant) {
+ if (type->size_constant) {
int n_elements = type->size;
- set_array_bounds_int(ir_type, 0, 0, n_elements);
+ set_array_bounds_int(irtype, 0, 0, n_elements);
size_t elemsize = get_type_size_bytes(ir_element_type);
- if(elemsize % align > 0) {
+ if (elemsize % align > 0) {
elemsize += align - (elemsize % align);
}
- set_type_size_bytes(ir_type, n_elements * elemsize);
+ set_type_size_bytes(irtype, n_elements * elemsize);
} else {
- set_array_lower_bound_int(ir_type, 0, 0);
+ set_array_lower_bound_int(irtype, 0, 0);
}
- set_type_state(ir_type, layout_fixed);
+ set_type_state(irtype, layout_fixed);
- return ir_type;
+ return irtype;
}
/**
* @param size the size
*/
static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
- unsigned size)
+ unsigned size,
+ const type_t *type)
{
static ir_mode *s_modes[64 + 1] = {NULL, };
ir_type *res;
char name[32];
snprintf(name, sizeof(name), "bf_I%u", size);
- mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
- size <= 32 ? 32 : size );
+ mode = new_int_mode(name, irma_twos_complement, size, 1, 0);
s_modes[size] = mode;
}
- char name[32];
- snprintf(name, sizeof(name), "I%u", size);
- ident *id = new_id_from_str(name);
- dbg_info *dbgi = get_dbg_info(&builtin_source_position);
- res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
+ type_dbg_info *dbgi = get_type_dbg_info_(type);
+ res = new_d_type_primitive(mode, dbgi);
set_primitive_base_type(res, base_tp);
return res;
* @param size the size
*/
static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
- unsigned size)
+ unsigned size,
+ const type_t *type)
{
static ir_mode *u_modes[64 + 1] = {NULL, };
ir_type *res;
char name[32];
snprintf(name, sizeof(name), "bf_U%u", size);
- mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
- size <= 32 ? 32 : size );
+ mode = new_int_mode(name, irma_twos_complement, size, 0, 0);
u_modes[size] = mode;
}
- char name[32];
-
- snprintf(name, sizeof(name), "U%u", size);
- ident *id = new_id_from_str(name);
- dbg_info *dbgi = get_dbg_info(&builtin_source_position);
- res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
+ type_dbg_info *dbgi = get_type_dbg_info_(type);
+ res = new_d_type_primitive(mode, dbgi);
set_primitive_base_type(res, base_tp);
return res;
}
-static ir_type *create_bitfield_type(bitfield_type_t *const type)
+static ir_type *create_bitfield_type(const entity_t *entity)
{
- type_t *base = skip_typeref(type->base_type);
- assert(base->kind == TYPE_ATOMIC);
+ assert(entity->kind == ENTITY_COMPOUND_MEMBER);
+ type_t *base = skip_typeref(entity->declaration.type);
+ assert(base->kind == TYPE_ATOMIC || base->kind == TYPE_ENUM);
ir_type *irbase = get_ir_type(base);
- unsigned size = fold_constant(type->size);
+ unsigned bit_size = entity->compound_member.bit_size;
assert(!is_type_float(base));
- if(is_type_signed(base)) {
- return get_signed_int_type_for_bit_size(irbase, size);
+ if (is_type_signed(base)) {
+ return get_signed_int_type_for_bit_size(irbase, bit_size, base);
} else {
- return get_unsigned_int_type_for_bit_size(irbase, size);
+ return get_unsigned_int_type_for_bit_size(irbase, bit_size, base);
}
}
-#define INVALID_TYPE ((ir_type_ptr)-1)
-
-static ir_type *create_union_type(compound_type_t *type, ir_type *irtype,
- size_t *outer_offset, size_t *outer_align);
+enum {
+ COMPOUND_IS_STRUCT = false,
+ COMPOUND_IS_UNION = true
+};
-static ir_type *create_struct_type(compound_type_t *type, ir_type *irtype,
- size_t *outer_offset, size_t *outer_align)
+/**
+ * Construct firm type from ast struct type.
+ */
+static ir_type *create_compound_type(compound_type_t *type,
+ bool incomplete, bool is_union)
{
- declaration_t *declaration = type->declaration;
- if(declaration->v.irtype != NULL) {
- return declaration->v.irtype;
+ compound_t *compound = type->compound;
+
+ if (compound->irtype != NULL && (compound->irtype_complete || incomplete)) {
+ return compound->irtype;
}
- size_t align_all = 1;
- size_t offset = 0;
- size_t bit_offset = 0;
- if(irtype == NULL) {
- symbol_t *symbol = declaration->symbol;
- ident *id;
- if(symbol != NULL) {
- id = unique_ident(symbol->string);
+ symbol_t *type_symbol = compound->base.symbol;
+ ident *id;
+ if (type_symbol != NULL) {
+ id = new_id_from_str(type_symbol->string);
+ } else {
+ if (is_union) {
+ id = id_unique("__anonymous_union.%u");
} else {
- id = unique_ident("__anonymous_struct");
+ id = id_unique("__anonymous_struct.%u");
}
- dbg_info *dbgi = get_dbg_info(&type->base.source_position);
+ }
- irtype = new_d_type_struct(id, dbgi);
+ ir_type *irtype;
+ if (is_union) {
+ irtype = new_type_union(id);
+ } else {
+ irtype = new_type_struct(id);
+ }
+
+ compound->irtype_complete = false;
+ compound->irtype = irtype;
+
+ if (incomplete)
+ return irtype;
- declaration->v.irtype = irtype;
- type->base.firm_type = irtype;
+ if (is_union) {
+ layout_union_type(type);
} else {
- offset = *outer_offset;
- align_all = *outer_align;
+ layout_struct_type(type);
}
- declaration_t *entry = declaration->scope.declarations;
- for( ; entry != NULL; entry = entry->next) {
- if(entry->namespc != NAMESPACE_NORMAL)
+ compound->irtype_complete = true;
+
+ entity_t *entry = compound->members.entities;
+ for ( ; entry != NULL; entry = entry->base.next) {
+ if (entry->kind != ENTITY_COMPOUND_MEMBER)
continue;
- symbol_t *symbol = entry->symbol;
- type_t *entry_type = skip_typeref(entry->type);
- dbg_info *dbgi = get_dbg_info(&entry->source_position);
+ symbol_t *symbol = entry->base.symbol;
+ type_t *entry_type = entry->declaration.type;
ident *ident;
- if(symbol != NULL) {
- ident = new_id_from_str(symbol->string);
- } else {
- if(entry_type->kind == TYPE_COMPOUND_STRUCT) {
- create_struct_type(&entry_type->compound, irtype, &offset,
- &align_all);
- continue;
- } else if(entry_type->kind == TYPE_COMPOUND_UNION) {
- create_union_type(&entry_type->compound, irtype, &offset,
- &align_all);
+ if (symbol == NULL) {
+ /* anonymous bitfield member, skip */
+ if (entry->compound_member.bitfield)
continue;
- } else {
- assert(entry_type->kind == TYPE_BITFIELD);
- }
- ident = unique_ident("anon");
- }
-
- ir_type *base_irtype;
- if(entry_type->kind == TYPE_BITFIELD) {
- base_irtype = get_ir_type(entry_type->bitfield.base_type);
+ assert(entry_type->kind == TYPE_COMPOUND_STRUCT
+ || entry_type->kind == TYPE_COMPOUND_UNION);
+ ident = id_unique("anon.%u");
} else {
- base_irtype = get_ir_type(entry_type);
+ ident = new_id_from_str(symbol->string);
}
- size_t entry_alignment = get_type_alignment_bytes(base_irtype);
- size_t misalign = offset % entry_alignment;
-
- ir_type *entry_irtype = get_ir_type(entry_type);
- ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
-
- size_t base;
- size_t bits_remainder;
- if(entry_type->kind == TYPE_BITFIELD) {
- size_t size_bits = fold_constant(entry_type->bitfield.size);
- size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
+ dbg_info *dbgi = get_dbg_info(&entry->base.source_position);
- if(size_bits > rest_size_bits) {
- /* start a new bucket */
- offset += entry_alignment - misalign;
- bit_offset = 0;
-
- base = offset;
- bits_remainder = 0;
- } else {
- /* put into current bucket */
- base = offset - misalign;
- bits_remainder = misalign * 8 + bit_offset;
- }
-
- offset += size_bits / 8;
- bit_offset = bit_offset + (size_bits % 8);
+ ir_type *entry_irtype;
+ if (entry->compound_member.bitfield) {
+ entry_irtype = create_bitfield_type(entry);
} else {
- size_t entry_size = get_type_size_bytes(base_irtype);
- if(misalign > 0 || bit_offset > 0)
- offset += entry_alignment - misalign;
-
- base = offset;
- bits_remainder = 0;
- offset += entry_size;
- bit_offset = 0;
- }
-
- if(entry_alignment > align_all) {
- if(entry_alignment % align_all != 0) {
- panic("uneven alignments not supported yet");
- }
- align_all = entry_alignment;
+ entry_irtype = get_ir_type(entry_type);
}
+ ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
- set_entity_offset(entity, base);
+ set_entity_offset(entity, entry->compound_member.offset);
set_entity_offset_bits_remainder(entity,
- (unsigned char) bits_remainder);
- //add_struct_member(irtype, entity);
- entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
- assert(entry->v.entity == NULL);
- entry->v.entity = entity;
- }
+ entry->compound_member.bit_offset);
- size_t misalign = offset % align_all;
- if(misalign > 0 || bit_offset > 0) {
- offset += align_all - misalign;
+ assert(entry->declaration.kind == DECLARATION_KIND_UNKNOWN);
+ entry->declaration.kind = DECLARATION_KIND_COMPOUND_MEMBER;
+ entry->compound_member.entity = entity;
}
- if(outer_offset != NULL) {
- *outer_offset = offset;
- *outer_align = align_all;
- } else {
- set_type_alignment_bytes(irtype, align_all);
- set_type_size_bytes(irtype, offset);
- set_type_state(irtype, layout_fixed);
- }
+ set_type_alignment_bytes(irtype, compound->alignment);
+ set_type_size_bytes(irtype, compound->size);
+ set_type_state(irtype, layout_fixed);
return irtype;
}
-static ir_type *create_union_type(compound_type_t *type, ir_type *irtype,
- size_t *outer_offset, size_t *outer_align)
-{
- declaration_t *declaration = type->declaration;
- if(declaration->v.irtype != NULL) {
- return declaration->v.irtype;
- }
-
- size_t align_all = 1;
- size_t offset = 0;
- size_t size = 0;
-
- if(irtype == NULL) {
- symbol_t *symbol = declaration->symbol;
- ident *id;
- if(symbol != NULL) {
- id = unique_ident(symbol->string);
- } else {
- id = unique_ident("__anonymous_union");
- }
- dbg_info *dbgi = get_dbg_info(&type->base.source_position);
-
- irtype = new_d_type_union(id, dbgi);
-
- declaration->v.irtype = irtype;
- type->base.firm_type = irtype;
- } else {
- offset = *outer_offset;
- align_all = *outer_align;
- }
-
- type->base.firm_type = irtype;
-
- declaration_t *entry = declaration->scope.declarations;
- for( ; entry != NULL; entry = entry->next) {
- if(entry->namespc != NAMESPACE_NORMAL)
- continue;
-
- symbol_t *symbol = entry->symbol;
- type_t *entry_type = skip_typeref(entry->type);
- ir_type *entry_ir_type = get_ir_type(entry_type);
-
- ident *ident;
- if(symbol != NULL) {
- ident = new_id_from_str(entry->symbol->string);
- } else {
- size_t offs = offset;
- if(entry_type->kind == TYPE_COMPOUND_STRUCT) {
- create_struct_type(&entry_type->compound, irtype, &offs,
- &align_all);
- continue;
- } else if(entry_type->kind == TYPE_COMPOUND_UNION) {
- create_union_type(&entry_type->compound, irtype, &offs,
- &align_all);
- continue;
- } else {
- panic("anonymous union member must be struct or union");
- }
- size_t entry_size = offs - offset;
- if(entry_size > size) {
- size = entry_size;
- }
- ident = unique_ident("anon");
- }
-
- size_t entry_size = get_type_size_bytes(entry_ir_type);
- size_t entry_alignment = get_type_alignment_bytes(entry_ir_type);
-
- dbg_info *const dbgi = get_dbg_info(&entry->source_position);
- ir_entity *const entity = new_d_entity(irtype, ident, entry_ir_type,
- dbgi);
- //add_union_member(irtype, entity);
- set_entity_offset(entity, 0);
- entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
- assert(entry->v.entity == NULL);
- entry->v.entity = entity;
-
- if(entry_size > size) {
- size = entry_size;
- }
- if(entry_alignment > align_all) {
- if(entry_alignment % align_all != 0) {
- panic("Uneven alignments not supported yet");
- }
- align_all = entry_alignment;
- }
- }
+static ir_tarval *fold_constant_to_tarval(expression_t const *);
- if(outer_offset != NULL) {
- assert(*outer_offset == offset);
+static void determine_enum_values(enum_type_t *const type)
+{
+ ir_mode *const mode = atomic_modes[type->base.akind];
+ ir_tarval *const one = get_mode_one(mode);
+ ir_tarval * tv_next = get_mode_null(mode);
- size_t misalign = offset % align_all;
- if (misalign != 0)
- size += align_all - misalign;
- *outer_offset += size;
+ enum_t *enume = type->enume;
+ entity_t *entry = enume->base.next;
+ for (; entry != NULL; entry = entry->base.next) {
+ if (entry->kind != ENTITY_ENUM_VALUE)
+ break;
- if(align_all > *outer_align) {
- if(align_all % *outer_align != 0) {
- panic("uneven alignments not supported yet");
- }
- *outer_align = align_all;
+ expression_t *const init = entry->enum_value.value;
+ if (init != NULL) {
+ tv_next = fold_constant_to_tarval(init);
}
- } else {
- set_type_alignment_bytes(irtype, align_all);
- set_type_size_bytes(irtype, size);
- set_type_state(irtype, layout_fixed);
- declaration->v.irtype = irtype;
+ assert(entry->enum_value.tv == NULL || entry->enum_value.tv == tv_next);
+ entry->enum_value.tv = tv_next;
+ tv_next = tarval_add(tv_next, one);
}
-
- return irtype;
}
static ir_type *create_enum_type(enum_type_t *const type)
{
- type->base.firm_type = ir_type_int;
-
- ir_mode *const mode = mode_int;
- tarval *const one = get_mode_one(mode);
- tarval * tv_next = get_tarval_null(mode);
-
- declaration_t *declaration = type->declaration->next;
- for (; declaration != NULL; declaration = declaration->next) {
- if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY)
- break;
+ return create_atomic_type(type->base.akind, (const type_t*) type);
+}
- declaration->declaration_kind = DECLARATION_KIND_ENUM_ENTRY;
+static ir_type *get_ir_type_incomplete(type_t *type)
+{
+ assert(type != NULL);
+ type = skip_typeref(type);
- expression_t *const init = declaration->init.enum_value;
- if (init != NULL) {
- ir_node *const cnst = expression_to_firm(init);
- if (!is_Const(cnst)) {
- panic("couldn't fold constant");
- }
- tv_next = get_Const_tarval(cnst);
- }
- declaration->v.enum_val = tv_next;
- tv_next = tarval_add(tv_next, one);
+ if (type->base.firm_type != NULL) {
+ return type->base.firm_type;
}
- return ir_type_int;
+ switch (type->kind) {
+ case TYPE_COMPOUND_STRUCT:
+ return create_compound_type(&type->compound, true, COMPOUND_IS_STRUCT);
+ case TYPE_COMPOUND_UNION:
+ return create_compound_type(&type->compound, true, COMPOUND_IS_UNION);
+ default:
+ return get_ir_type(type);
+ }
}
-static ir_type *get_ir_type(type_t *type)
+ir_type *get_ir_type(type_t *type)
{
assert(type != NULL);
type = skip_typeref(type);
- if(type->base.firm_type != NULL) {
- assert(type->base.firm_type != INVALID_TYPE);
+ if (type->base.firm_type != NULL) {
return type->base.firm_type;
}
ir_type *firm_type = NULL;
- switch(type->kind) {
- case TYPE_ERROR:
- panic("error type occured");
+ switch (type->kind) {
case TYPE_ATOMIC:
- firm_type = create_atomic_type(&type->atomic);
+ firm_type = create_atomic_type(type->atomic.akind, type);
+ break;
+ case TYPE_COMPLEX:
+ firm_type = create_complex_type(&type->atomic);
+ break;
+ case TYPE_IMAGINARY:
+ firm_type = create_imaginary_type(&type->atomic);
break;
case TYPE_FUNCTION:
- firm_type = create_method_type(&type->function);
+ firm_type = create_method_type(&type->function, false);
break;
case TYPE_POINTER:
firm_type = create_pointer_type(&type->pointer);
break;
+ case TYPE_REFERENCE:
+ firm_type = create_reference_type(&type->reference);
+ break;
case TYPE_ARRAY:
firm_type = create_array_type(&type->array);
break;
case TYPE_COMPOUND_STRUCT:
- firm_type = create_struct_type(&type->compound, NULL, NULL, NULL);
+ firm_type = create_compound_type(&type->compound, false, COMPOUND_IS_STRUCT);
break;
case TYPE_COMPOUND_UNION:
- firm_type = create_union_type(&type->compound, NULL, NULL, NULL);
+ firm_type = create_compound_type(&type->compound, false, COMPOUND_IS_UNION);
break;
case TYPE_ENUM:
firm_type = create_enum_type(&type->enumt);
break;
- case TYPE_BUILTIN:
- firm_type = get_ir_type(type->builtin.real_type);
- break;
- case TYPE_BITFIELD:
- firm_type = create_bitfield_type(&type->bitfield);
- break;
+ case TYPE_ERROR:
case TYPE_TYPEOF:
case TYPE_TYPEDEF:
- case TYPE_INVALID:
break;
}
- if(firm_type == NULL)
+ if (firm_type == NULL)
panic("unknown type found");
type->base.firm_type = firm_type;
return firm_type;
}
-static inline ir_mode *get_ir_mode(type_t *type)
+static ir_mode *get_ir_mode_storage(type_t *type)
{
- ir_type *irtype = get_ir_type(type);
+ type = skip_typeref(type);
- /* firm doesn't report a mode for arrays somehow... */
- if(is_Array_type(irtype)) {
+ /* Firm doesn't report a mode for arrays and structs/unions. */
+ if (!is_type_scalar(type)) {
return mode_P_data;
}
- ir_mode *mode = get_type_mode(irtype);
+ ir_type *const irtype = get_ir_type(type);
+ ir_mode *const mode = get_type_mode(irtype);
assert(mode != NULL);
return mode;
}
-static ident *predef_idents[rts_max];
+/*
+ * get arithmetic mode for a type. This is different from get_ir_mode_storage,
+ * int that it returns bigger modes for floating point on some platforms
+ * (x87 internally does arithemtic with 80bits)
+ */
+static ir_mode *get_ir_mode_arithmetic(type_t *type)
+{
+ ir_mode *mode = get_ir_mode_storage(type);
+ if (mode_is_float(mode) && mode_float_arithmetic != NULL) {
+ return mode_float_arithmetic;
+ }
+
+ return mode;
+}
+
+/**
+ * Return a node representing the size of a type.
+ */
+static ir_node *get_type_size_node(type_t *type)
+{
+ unsigned size;
+ ir_mode *mode = get_ir_mode_arithmetic(type_size_t);
+ type = skip_typeref(type);
+
+ if (is_type_array(type) && type->array.is_vla) {
+ ir_node *size_node = get_vla_size(&type->array);
+ ir_node *elem_size = get_type_size_node(type->array.element_type);
+ ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
+ return real_size;
+ }
+
+ size = get_type_size(type);
+ return new_Const_long(mode, size);
+}
/** Names of the runtime functions. */
static const struct {
} rts_data[] = {
{ rts_debugbreak, 0, "__debugbreak", 0, _MS },
{ rts_abort, 0, "abort", 0, _C89 },
+ { rts_alloca, 1, "alloca", 1, _ALL },
{ rts_abs, 1, "abs", 1, _C89 },
{ rts_labs, 1, "labs", 1, _C89 },
{ rts_llabs, 1, "llabs", 1, _C99 },
{ rts_coshl, 1, "coshl", 1, _C99 },
{ rts_tanhl, 1, "tanhl", 1, _C99 },
- { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
- { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
{ rts_strcmp, 1, "strcmp", 2, _C89 },
- { rts_strncmp, 1, "strncmp", 3, _C89 }
+ { rts_strncmp, 1, "strncmp", 3, _C89 },
+ { rts_strcpy, 1, "strcpy", 2, _C89 },
+ { rts_strlen, 1, "strlen", 1, _C89 },
+ { rts_memcpy, 1, "memcpy", 3, _C89 },
+ { rts_mempcpy, 1, "mempcpy", 3, _GNUC },
+ { rts_memmove, 1, "memmove", 3, _C89 },
+ { rts_memset, 1, "memset", 3, _C89 },
+ { rts_memcmp, 1, "memcmp", 3, _C89 },
};
-static ir_entity* get_function_entity(declaration_t *declaration)
-{
- if(declaration->declaration_kind == DECLARATION_KIND_FUNCTION)
- return declaration->v.entity;
- assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
-
- symbol_t *symbol = declaration->symbol;
- ident *id = new_id_from_str(symbol->string);
-
- ir_type *global_type = get_glob_type();
- ir_type *ir_type_method = get_ir_type(declaration->type);
- assert(is_Method_type(ir_type_method));
-
- dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
- ir_entity *const entity = new_d_entity(global_type, id, ir_type_method, dbgi);
- set_entity_ld_ident(entity, id);
- if(declaration->storage_class == STORAGE_CLASS_STATIC
- || declaration->is_inline) {
- set_entity_visibility(entity, visibility_local);
- } else if(declaration->init.statement != NULL) {
- set_entity_visibility(entity, visibility_external_visible);
- } else {
- set_entity_visibility(entity, visibility_external_allocated);
-
- /* We should check for file scope here, but as long as we compile C only
- this is not needed. */
- int n_params = get_method_n_params(ir_type_method);
- int n_res = get_method_n_ress(ir_type_method);
- int i;
-
- if (n_params == 0 && n_res == 0 && id == predef_idents[rts_abort]) {
- /* found abort(), store for later */
- //abort_ent = ent;
- //abort_tp = ftype;
- } else {
- if (! firm_opt.freestanding) {
- /* check for a known runtime function */
- for (i = 0; i < rts_max; ++i) {
- /* ignore those rts functions not necessary needed for current mode */
- if ((c_mode & rts_data[i].flags) == 0)
- continue;
- if (n_params == rts_data[i].n_params && n_res == rts_data[i].n_res &&
- id == predef_idents[rts_data[i].id])
- rts_entities[rts_data[i].id] = entity;
- }
- }
- }
- }
- set_entity_allocation(entity, allocation_static);
+static ident *rts_idents[lengthof(rts_data)];
- declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
- declaration->v.entity = entity;
+static create_ld_ident_func create_ld_ident = create_name_linux_elf;
- return entity;
+void set_create_ld_ident(ident *(*func)(entity_t*))
+{
+ create_ld_ident = func;
}
-static ir_node *const_to_firm(const const_expression_t *cnst)
+/**
+ * Handle GNU attributes for entities
+ *
+ * @param ent the entity
+ * @param decl the routine declaration
+ */
+static void handle_decl_modifiers(ir_entity *irentity, entity_t *entity)
{
- dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
- ir_mode *mode = get_ir_mode(cnst->base.type);
+ assert(is_declaration(entity));
+ decl_modifiers_t modifiers = entity->declaration.modifiers;
- char buf[128];
- tarval *tv;
- size_t len;
- if(mode_is_float(mode)) {
- tv = new_tarval_from_double(cnst->v.float_value, mode);
- } else {
- if(mode_is_signed(mode)) {
- len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
- } else {
- len = snprintf(buf, sizeof(buf), "%llu",
- (unsigned long long) cnst->v.int_value);
+ if (is_method_entity(irentity)) {
+ if (modifiers & DM_PURE) {
+ set_entity_additional_properties(irentity, mtp_property_pure);
+ }
+ if (modifiers & DM_CONST) {
+ add_entity_additional_properties(irentity, mtp_property_const);
}
- tv = new_tarval_from_str(buf, len, mode);
}
-
- return new_d_Const(dbgi, mode, tv);
+ if (modifiers & DM_USED) {
+ add_entity_linkage(irentity, IR_LINKAGE_HIDDEN_USER);
+ }
+ if (modifiers & DM_WEAK) {
+ add_entity_linkage(irentity, IR_LINKAGE_WEAK);
+ }
}
-static ir_node *character_constant_to_firm(const const_expression_t *cnst)
+static bool is_main(entity_t *entity)
{
- dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
- ir_mode *mode = get_ir_mode(cnst->base.type);
-
- long long int v = 0;
- for (size_t i = 0; i < cnst->v.character.size; ++i) {
- v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
+ static symbol_t *sym_main = NULL;
+ if (sym_main == NULL) {
+ sym_main = symbol_table_insert("main");
}
- char buf[128];
- size_t len = snprintf(buf, sizeof(buf), "%lld", v);
- tarval *tv = new_tarval_from_str(buf, len, mode);
- return new_d_Const(dbgi, mode, tv);
-}
+ if (entity->base.symbol != sym_main)
+ return false;
+ /* must be in outermost scope */
+ if (entity->base.parent_scope != ¤t_translation_unit->scope)
+ return false;
-static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
-{
- dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
- ir_mode *mode = get_ir_mode(cnst->base.type);
+ return true;
+}
- long long int v = cnst->v.wide_character.begin[0];
+/**
+ * Creates an entity representing a function.
+ *
+ * @param entity the function declaration/definition
+ * @param owner_type the owner type of this function, NULL
+ * for global functions
+ */
+static ir_entity *get_function_entity(entity_t *entity, ir_type *owner_type)
+{
+ assert(entity->kind == ENTITY_FUNCTION);
+ if (entity->function.irentity != NULL)
+ return entity->function.irentity;
+
+ switch (entity->function.btk) {
+ case BUILTIN_NONE:
+ case BUILTIN_LIBC:
+ case BUILTIN_LIBC_CHECK:
+ break;
+ default:
+ return NULL;
+ }
+
+ if (is_main(entity)) {
+ /* force main to C linkage */
+ type_t *type = entity->declaration.type;
+ assert(is_type_function(type));
+ if (type->function.linkage != LINKAGE_C) {
+ type_t *new_type = duplicate_type(type);
+ new_type->function.linkage = LINKAGE_C;
+ type = identify_new_type(new_type);
+ entity->declaration.type = type;
+ }
+ }
+
+ symbol_t *symbol = entity->base.symbol;
+ ident *id = new_id_from_str(symbol->string);
+
+ /* already an entity defined? */
+ ir_entity *irentity = entitymap_get(&entitymap, symbol);
+ bool const has_body = entity->function.statement != NULL;
+ if (irentity != NULL) {
+ if (get_entity_visibility(irentity) == ir_visibility_external
+ && has_body) {
+ set_entity_visibility(irentity, ir_visibility_default);
+ }
+ goto entity_created;
+ }
+
+ ir_type *ir_type_method;
+ if (entity->function.need_closure)
+ ir_type_method = create_method_type(&entity->declaration.type->function, true);
+ else
+ ir_type_method = get_ir_type(entity->declaration.type);
+
+ bool nested_function = false;
+ if (owner_type == NULL)
+ owner_type = get_glob_type();
+ else
+ nested_function = true;
+
+ dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
+ irentity = new_d_entity(owner_type, id, ir_type_method, dbgi);
+
+ ident *ld_id;
+ if (nested_function)
+ ld_id = id_unique("inner.%u");
+ else
+ ld_id = create_ld_ident(entity);
+ set_entity_ld_ident(irentity, ld_id);
+
+ handle_decl_modifiers(irentity, entity);
+
+ if (! nested_function) {
+ /* static inline => local
+ * extern inline => local
+ * inline without definition => local
+ * inline with definition => external_visible */
+ storage_class_tag_t const storage_class
+ = (storage_class_tag_t) entity->declaration.storage_class;
+ bool const is_inline = entity->function.is_inline;
+
+ if (is_inline && storage_class == STORAGE_CLASS_NONE && has_body) {
+ set_entity_visibility(irentity, ir_visibility_default);
+ } else if (storage_class == STORAGE_CLASS_STATIC ||
+ (is_inline && has_body)) {
+ set_entity_visibility(irentity, ir_visibility_local);
+ } else if (has_body) {
+ set_entity_visibility(irentity, ir_visibility_default);
+ } else {
+ set_entity_visibility(irentity, ir_visibility_external);
+ }
+ } else {
+ /* nested functions are always local */
+ set_entity_visibility(irentity, ir_visibility_local);
+ }
+
+ /* We should check for file scope here, but as long as we compile C only
+ this is not needed. */
+ if (!freestanding && !has_body) {
+ /* check for a known runtime function */
+ for (size_t i = 0; i < lengthof(rts_data); ++i) {
+ if (id != rts_idents[i])
+ continue;
+
+ function_type_t *function_type
+ = &entity->declaration.type->function;
+ /* rts_entities code can't handle a "wrong" number of parameters */
+ if (function_type->unspecified_parameters)
+ continue;
+
+ /* check number of parameters */
+ int n_params = count_parameters(function_type);
+ if (n_params != rts_data[i].n_params)
+ continue;
+
+ type_t *return_type = skip_typeref(function_type->return_type);
+ int n_res = is_type_void(return_type) ? 0 : 1;
+ if (n_res != rts_data[i].n_res)
+ continue;
+
+ /* ignore those rts functions not necessary needed for current mode */
+ if ((c_mode & rts_data[i].flags) == 0)
+ continue;
+ assert(rts_entities[rts_data[i].id] == NULL);
+ rts_entities[rts_data[i].id] = irentity;
+ }
+ }
+
+ entitymap_insert(&entitymap, symbol, irentity);
- char buf[128];
- size_t len = snprintf(buf, sizeof(buf), "%lld", v);
- tarval *tv = new_tarval_from_str(buf, len, mode);
+entity_created:
+ entity->declaration.kind = DECLARATION_KIND_FUNCTION;
+ entity->function.irentity = irentity;
- return new_d_Const(dbgi, mode, tv);
+ return irentity;
}
-static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
- ir_entity *entity)
+/**
+ * Creates a SymConst for a given entity.
+ *
+ * @param dbgi debug info
+ * @param entity the entity
+ */
+static ir_node *create_symconst(dbg_info *dbgi, ir_entity *entity)
{
assert(entity != NULL);
union symconst_symbol sym;
sym.entity_p = entity;
- return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
+ return new_d_SymConst(dbgi, mode_P, sym, symconst_addr_ent);
+}
+
+static ir_node *create_Const_from_bool(ir_mode *const mode, bool const v)
+{
+ return new_Const((v ? get_mode_one : get_mode_null)(mode));
+}
+
+static ir_node *create_conv_from_b(dbg_info *dbgi, ir_node *value,
+ ir_mode *dest_mode)
+{
+ if (is_Const(value)) {
+ return create_Const_from_bool(dest_mode, !is_Const_null(value));
+ }
+
+ ir_node *cond = new_d_Cond(dbgi, value);
+ ir_node *proj_true = new_Proj(cond, mode_X, pn_Cond_true);
+ ir_node *proj_false = new_Proj(cond, mode_X, pn_Cond_false);
+ ir_node *tblock = new_Block(1, &proj_true);
+ ir_node *fblock = new_Block(1, &proj_false);
+ set_cur_block(tblock);
+ ir_node *const1 = new_Const(get_mode_one(dest_mode));
+ ir_node *tjump = new_Jmp();
+ set_cur_block(fblock);
+ ir_node *const0 = new_Const(get_mode_null(dest_mode));
+ ir_node *fjump = new_Jmp();
+
+ ir_node *in[2] = { tjump, fjump };
+ ir_node *mergeblock = new_Block(2, in);
+ set_cur_block(mergeblock);
+ ir_node *phi_in[2] = { const1, const0 };
+ ir_node *phi = new_Phi(2, phi_in, dest_mode);
+ return phi;
+}
+
+static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
+{
+ ir_mode *value_mode = get_irn_mode(value);
+
+ if (value_mode == dest_mode)
+ return value;
+
+ if (dest_mode == mode_b) {
+ ir_node *zero = new_Const(get_mode_null(value_mode));
+ ir_node *cmp = new_d_Cmp(dbgi, value, zero, ir_relation_unordered_less_greater);
+ return cmp;
+ } else if (value_mode == mode_b) {
+ return create_conv_from_b(dbgi, value, dest_mode);
+ }
+
+ return new_d_Conv(dbgi, value, dest_mode);
+}
+
+/**
+ * Creates a SymConst node representing a wide string literal.
+ *
+ * @param literal the wide string literal
+ */
+static ir_node *wide_string_literal_to_firm(
+ const string_literal_expression_t *literal)
+{
+ ir_type *const global_type = get_glob_type();
+ ir_type *const elem_type = ir_type_wchar_t;
+ dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
+ ir_type *const type = new_type_array(1, elem_type);
+
+ ident *const id = id_unique("str.%u");
+ ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
+ set_entity_ld_ident(entity, id);
+ set_entity_visibility(entity, ir_visibility_private);
+ add_entity_linkage(entity, IR_LINKAGE_CONSTANT);
+
+ ir_mode *const mode = get_type_mode(elem_type);
+ const size_t slen = wstrlen(&literal->value);
+
+ set_array_lower_bound_int(type, 0, 0);
+ set_array_upper_bound_int(type, 0, slen);
+ set_type_size_bytes(type, slen * get_mode_size_bytes(mode));
+ set_type_state(type, layout_fixed);
+
+ ir_initializer_t *initializer = create_initializer_compound(slen);
+ const char *p = literal->value.begin;
+ for (size_t i = 0; i < slen; ++i) {
+ assert(p < literal->value.begin + literal->value.size);
+ utf32 v = read_utf8_char(&p);
+ ir_tarval *tv = new_tarval_from_long(v, mode);
+ ir_initializer_t *val = create_initializer_tarval(tv);
+ set_initializer_compound_value(initializer, i, val);
+ }
+ set_entity_initializer(entity, initializer);
+
+ return create_symconst(dbgi, entity);
}
+/**
+ * Creates a SymConst node representing a string constant.
+ *
+ * @param src_pos the source position of the string constant
+ * @param id_prefix a prefix for the name of the generated string constant
+ * @param value the value of the string constant
+ */
static ir_node *string_to_firm(const source_position_t *const src_pos,
const char *const id_prefix,
const string_t *const value)
{
ir_type *const global_type = get_glob_type();
dbg_info *const dbgi = get_dbg_info(src_pos);
- ir_type *const type = new_d_type_array(unique_ident("strtype"), 1,
- ir_type_const_char, dbgi);
+ ir_type *const type = new_type_array(1, ir_type_const_char);
- ident *const id = unique_ident(id_prefix);
+ ident *const id = id_unique(id_prefix);
ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
set_entity_ld_ident(entity, id);
- set_entity_variability(entity, variability_constant);
- set_entity_allocation(entity, allocation_static);
+ set_entity_visibility(entity, ir_visibility_private);
+ add_entity_linkage(entity, IR_LINKAGE_CONSTANT);
ir_type *const elem_type = ir_type_const_char;
ir_mode *const mode = get_type_mode(elem_type);
set_type_size_bytes(type, slen);
set_type_state(type, layout_fixed);
- tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
- for(size_t i = 0; i < slen; ++i) {
- tvs[i] = new_tarval_from_long(string[i], mode);
+ ir_initializer_t *initializer = create_initializer_compound(slen);
+ for (size_t i = 0; i < slen; ++i) {
+ ir_tarval *tv = new_tarval_from_long(string[i], mode);
+ ir_initializer_t *val = create_initializer_tarval(tv);
+ set_initializer_compound_value(initializer, i, val);
}
+ set_entity_initializer(entity, initializer);
+
+ return create_symconst(dbgi, entity);
+}
+
+static bool try_create_integer(literal_expression_t *literal,
+ type_t *type, unsigned char base)
+{
+ const char *string = literal->value.begin;
+ size_t size = literal->value.size;
+
+ assert(type->kind == TYPE_ATOMIC);
+ atomic_type_kind_t akind = type->atomic.akind;
- set_array_entity_values(entity, tvs, slen);
- free(tvs);
+ ir_mode *mode = atomic_modes[akind];
+ ir_tarval *tv = new_integer_tarval_from_str(string, size, 1, base, mode);
+ if (tv == tarval_bad)
+ return false;
- return create_symconst(dbgi, mode_P_data, entity);
+ literal->base.type = type;
+ literal->target_value = tv;
+ return true;
}
-static ir_node *string_literal_to_firm(
- const string_literal_expression_t* literal)
+static void create_integer_tarval(literal_expression_t *literal)
{
- return string_to_firm(&literal->base.source_position, "Lstr",
- &literal->value);
+ unsigned us = 0;
+ unsigned ls = 0;
+ const string_t *suffix = &literal->suffix;
+ /* parse suffix */
+ if (suffix->size > 0) {
+ for (const char *c = suffix->begin; *c != '\0'; ++c) {
+ if (*c == 'u' || *c == 'U') { ++us; }
+ if (*c == 'l' || *c == 'L') { ++ls; }
+ }
+ }
+
+ unsigned base;
+ switch (literal->base.kind) {
+ case EXPR_LITERAL_INTEGER_OCTAL: base = 8; break;
+ case EXPR_LITERAL_INTEGER: base = 10; break;
+ case EXPR_LITERAL_INTEGER_HEXADECIMAL: base = 16; break;
+ default: panic("invalid literal kind");
+ }
+
+ tarval_int_overflow_mode_t old_mode = tarval_get_integer_overflow_mode();
+
+ /* now try if the constant is small enough for some types */
+ tarval_set_integer_overflow_mode(TV_OVERFLOW_BAD);
+ if (ls < 1) {
+ if (us == 0 && try_create_integer(literal, type_int, base))
+ goto finished;
+ if ((us == 1 || base != 10)
+ && try_create_integer(literal, type_unsigned_int, base))
+ goto finished;
+ }
+ if (ls < 2) {
+ if (us == 0 && try_create_integer(literal, type_long, base))
+ goto finished;
+ if ((us == 1 || base != 10)
+ && try_create_integer(literal, type_unsigned_long, base))
+ goto finished;
+ }
+ /* last try? then we should not report tarval_bad */
+ if (us != 1 && base == 10)
+ tarval_set_integer_overflow_mode(TV_OVERFLOW_WRAP);
+ if (us == 0 && try_create_integer(literal, type_long_long, base))
+ goto finished;
+
+ /* last try */
+ assert(us == 1 || base != 10);
+ tarval_set_integer_overflow_mode(TV_OVERFLOW_WRAP);
+ bool res = try_create_integer(literal, type_unsigned_long_long, base);
+ if (!res)
+ panic("internal error when parsing number literal");
+
+finished:
+ tarval_set_integer_overflow_mode(old_mode);
+}
+
+void determine_literal_type(literal_expression_t *literal)
+{
+ switch (literal->base.kind) {
+ case EXPR_LITERAL_INTEGER:
+ case EXPR_LITERAL_INTEGER_OCTAL:
+ case EXPR_LITERAL_INTEGER_HEXADECIMAL:
+ create_integer_tarval(literal);
+ return;
+ default:
+ break;
+ }
}
-static ir_node *wide_string_literal_to_firm(
- const wide_string_literal_expression_t* const literal)
+/**
+ * Creates a Const node representing a constant.
+ */
+static ir_node *literal_to_firm(const literal_expression_t *literal)
{
- ir_type *const global_type = get_glob_type();
- ir_type *const elem_type = ir_type_wchar_t;
- dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
- ir_type *const type = new_d_type_array(unique_ident("strtype"), 1,
- elem_type, dbgi);
+ type_t *type = skip_typeref(literal->base.type);
+ ir_mode *mode = get_ir_mode_storage(type);
+ const char *string = literal->value.begin;
+ size_t size = literal->value.size;
+ ir_tarval *tv;
- ident *const id = unique_ident("Lstr");
- ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
- set_entity_ld_ident(entity, id);
- set_entity_variability(entity, variability_constant);
- set_entity_allocation(entity, allocation_static);
+ switch (literal->base.kind) {
+ case EXPR_LITERAL_WIDE_CHARACTER: {
+ utf32 v = read_utf8_char(&string);
+ char buf[128];
+ size_t len = snprintf(buf, sizeof(buf), UTF32_PRINTF_FORMAT, v);
- ir_mode *const mode = get_type_mode(elem_type);
+ tv = new_tarval_from_str(buf, len, mode);
+ goto make_const;
+ }
+ case EXPR_LITERAL_CHARACTER: {
+ long long int v;
+ bool char_is_signed
+ = get_atomic_type_flags(ATOMIC_TYPE_CHAR) & ATOMIC_TYPE_FLAG_SIGNED;
+ if (size == 1 && char_is_signed) {
+ v = (signed char)string[0];
+ } else {
+ v = 0;
+ for (size_t i = 0; i < size; ++i) {
+ v = (v << 8) | ((unsigned char)string[i]);
+ }
+ }
+ char buf[128];
+ size_t len = snprintf(buf, sizeof(buf), "%lld", v);
- const wchar_rep_t *const string = literal->value.begin;
- const size_t slen = literal->value.size;
+ tv = new_tarval_from_str(buf, len, mode);
+ goto make_const;
+ }
+ case EXPR_LITERAL_INTEGER:
+ case EXPR_LITERAL_INTEGER_OCTAL:
+ case EXPR_LITERAL_INTEGER_HEXADECIMAL:
+ assert(literal->target_value != NULL);
+ tv = literal->target_value;
+ goto make_const;
+ case EXPR_LITERAL_FLOATINGPOINT:
+ tv = new_tarval_from_str(string, size, mode);
+ goto make_const;
+ case EXPR_LITERAL_FLOATINGPOINT_HEXADECIMAL: {
+ char buffer[size + 2];
+ memcpy(buffer, "0x", 2);
+ memcpy(buffer+2, string, size);
+ tv = new_tarval_from_str(buffer, size+2, mode);
+ goto make_const;
+ }
+ case EXPR_LITERAL_BOOLEAN:
+ if (string[0] == 't') {
+ tv = get_mode_one(mode);
+ } else {
+ assert(string[0] == 'f');
+ tv = get_mode_null(mode);
+ }
+ goto make_const;
+ case EXPR_LITERAL_MS_NOOP:
+ tv = get_mode_null(mode);
+ goto make_const;
+ default:
+ break;
+ }
+ panic("Invalid literal kind found");
- set_array_lower_bound_int(type, 0, 0);
- set_array_upper_bound_int(type, 0, slen);
- set_type_size_bytes(type, slen);
- set_type_state(type, layout_fixed);
+make_const: ;
+ dbg_info *dbgi = get_dbg_info(&literal->base.source_position);
+ ir_node *res = new_d_Const(dbgi, tv);
+ ir_mode *mode_arith = get_ir_mode_arithmetic(type);
+ return create_conv(dbgi, res, mode_arith);
+}
+
+/*
+ * Allocate an area of size bytes aligned at alignment
+ * at a frame type.
+ */
+static ir_entity *alloc_trampoline(ir_type *frame_type, int size, unsigned alignment)
+{
+ static unsigned area_cnt = 0;
+ char buf[32];
+
+ ir_type *tp = new_type_array(1, ir_type_char);
+ set_array_bounds_int(tp, 0, 0, size);
+ set_type_alignment_bytes(tp, alignment);
+
+ snprintf(buf, sizeof(buf), "trampolin%u", area_cnt++);
+ ident *name = new_id_from_str(buf);
+ ir_entity *area = new_entity(frame_type, name, tp);
+
+ /* mark this entity as compiler generated */
+ set_entity_compiler_generated(area, 1);
+ return area;
+}
+
+/**
+ * Return a node representing a trampoline region
+ * for a given function entity.
+ *
+ * @param dbgi debug info
+ * @param entity the function entity
+ */
+static ir_node *get_trampoline_region(dbg_info *dbgi, ir_entity *entity)
+{
+ ir_entity *region = NULL;
+ int i;
+
+ if (current_trampolines != NULL) {
+ for (i = ARR_LEN(current_trampolines) - 1; i >= 0; --i) {
+ if (current_trampolines[i].function == entity) {
+ region = current_trampolines[i].region;
+ break;
+ }
+ }
+ } else {
+ current_trampolines = NEW_ARR_F(trampoline_region, 0);
+ }
+ ir_graph *irg = current_ir_graph;
+ if (region == NULL) {
+ /* create a new region */
+ ir_type *frame_tp = get_irg_frame_type(irg);
+ trampoline_region reg;
+ reg.function = entity;
- tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
- for(size_t i = 0; i < slen; ++i) {
- tvs[i] = new_tarval_from_long(string[i], mode);
+ reg.region = alloc_trampoline(frame_tp,
+ be_params->trampoline_size,
+ be_params->trampoline_align);
+ ARR_APP1(trampoline_region, current_trampolines, reg);
+ region = reg.region;
}
+ return new_d_simpleSel(dbgi, get_irg_no_mem(irg), get_irg_frame(irg),
+ region);
+}
- set_array_entity_values(entity, tvs, slen);
- free(tvs);
+/**
+ * Creates a trampoline for a function represented by an entity.
+ *
+ * @param dbgi debug info
+ * @param mode the (reference) mode for the function address
+ * @param entity the function entity
+ */
+static ir_node *create_trampoline(dbg_info *dbgi, ir_mode *mode,
+ ir_entity *entity)
+{
+ assert(entity != NULL);
+ ir_node *in[3];
+ in[0] = get_trampoline_region(dbgi, entity);
+ in[1] = create_symconst(dbgi, entity);
+ in[2] = get_irg_frame(current_ir_graph);
- return create_symconst(dbgi, mode_P_data, entity);
+ ir_node *irn = new_d_Builtin(dbgi, get_store(), 3, in, ir_bk_inner_trampoline, get_unknown_type());
+ set_store(new_Proj(irn, mode_M, pn_Builtin_M));
+ return new_Proj(irn, mode, pn_Builtin_max+1);
}
-static ir_node *deref_address(type_t *const type, ir_node *const addr,
- dbg_info *const dbgi)
+/**
+ * Dereference an address.
+ *
+ * @param dbgi debug info
+ * @param type the type of the dereferenced result (the points_to type)
+ * @param addr the address to dereference
+ */
+static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
+ ir_node *const addr)
{
- ir_type *irtype = get_ir_type(type);
+ type_t *skipped = skip_typeref(type);
+ if (is_type_incomplete(skipped))
+ return addr;
+
+ ir_type *irtype = get_ir_type(skipped);
if (is_compound_type(irtype)
- || is_Method_type(irtype)
- || is_Array_type(irtype)) {
+ || is_Method_type(irtype)
+ || is_Array_type(irtype)) {
return addr;
}
+ ir_cons_flags flags = skipped->base.qualifiers & TYPE_QUALIFIER_VOLATILE
+ ? cons_volatile : cons_none;
ir_mode *const mode = get_type_mode(irtype);
ir_node *const memory = get_store();
- ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
+ ir_node *const load = new_d_Load(dbgi, memory, addr, mode, flags);
ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
- if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
- set_Load_volatility(load, volatility_is_volatile);
- }
-
set_store(load_mem);
- return load_res;
+
+ ir_mode *const mode_arithmetic = get_ir_mode_arithmetic(skipped);
+ return create_conv(dbgi, load_res, mode_arithmetic);
}
+/**
+ * Creates a strict Conv (to the node's mode) if necessary.
+ *
+ * @param dbgi debug info
+ * @param node the node to strict conv
+ */
static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
{
ir_mode *mode = get_irn_mode(node);
- if(!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
+ if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
return node;
- if(!mode_is_float(mode))
+ if (!mode_is_float(mode))
return node;
/* check if there is already a Conv */
- if (get_irn_op(node) == op_Conv) {
+ if (is_Conv(node)) {
/* convert it into a strict Conv */
set_Conv_strict(node, 1);
return node;
return new_d_strictConv(dbgi, node, mode);
}
-static ir_node *get_global_var_address(dbg_info *const dbgi,
- const declaration_t *const decl)
+/**
+ * Returns the correct base address depending on whether it is a parameter or a
+ * normal local variable.
+ */
+static ir_node *get_local_frame(ir_entity *const ent)
{
- assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
+ ir_graph *const irg = current_ir_graph;
+ const ir_type *const owner = get_entity_owner(ent);
+ if (owner == current_outer_frame) {
+ assert(current_static_link != NULL);
+ return current_static_link;
+ } else {
+ return get_irg_frame(irg);
+ }
+}
- ir_entity *const entity = decl->v.entity;
- switch ((storage_class_tag_t)decl->storage_class) {
- case STORAGE_CLASS_THREAD:
- case STORAGE_CLASS_THREAD_EXTERN:
- case STORAGE_CLASS_THREAD_STATIC: {
- ir_node *const no_mem = new_NoMem();
- ir_node *const tls = get_irg_tls(current_ir_graph);
- return new_d_simpleSel(dbgi, no_mem, tls, entity);
- }
+/**
+ * Keep all memory edges of the given block.
+ */
+static void keep_all_memory(ir_node *block)
+{
+ ir_node *old = get_cur_block();
- default:
- return create_symconst(dbgi, mode_P_data, entity);
- }
+ set_cur_block(block);
+ keep_alive(get_store());
+ /* TODO: keep all memory edges from restricted pointers */
+ set_cur_block(old);
}
-/* Returns the correct base address depending on whether it is a parameter or a
- * normal local variable */
-static ir_node *get_local_frame(ir_entity *const ent)
+static ir_node *enum_constant_to_firm(reference_expression_t const *const ref)
{
- ir_graph *const irg = current_ir_graph;
- const ir_type *const owner = get_entity_owner(ent);
- if (owner == get_irg_frame_type(irg)) {
- return get_irg_frame(irg);
- } else {
- assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
- return get_irg_value_param_base(irg);
+ entity_t *entity = ref->entity;
+ if (entity->enum_value.tv == NULL) {
+ type_t *type = skip_typeref(entity->enum_value.enum_type);
+ assert(type->kind == TYPE_ENUM);
+ determine_enum_values(&type->enumt);
}
+
+ return new_Const(entity->enum_value.tv);
}
static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
{
- dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
- declaration_t *declaration = ref->declaration;
- type_t *type = skip_typeref(declaration->type);
-
- switch((declaration_kind_t) declaration->declaration_kind) {
- case DECLARATION_KIND_UNKNOWN:
- if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY) {
- break;
+ dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
+ entity_t *entity = ref->entity;
+ assert(is_declaration(entity));
+ type_t *type = skip_typeref(entity->declaration.type);
+
+ /* make sure the type is constructed */
+ (void) get_ir_type(type);
+
+ if (entity->kind == ENTITY_FUNCTION
+ && entity->function.btk != BUILTIN_NONE) {
+ ir_entity *irentity = get_function_entity(entity, NULL);
+ /* for gcc compatibility we have to produce (dummy) addresses for some
+ * builtins which don't have entities */
+ if (irentity == NULL) {
+ source_position_t const *const pos = &ref->base.source_position;
+ symbol_t const *const sym = ref->entity->base.symbol;
+ warningf(WARN_OTHER, pos, "taking address of builtin '%Y'", sym);
+
+ /* simply create a NULL pointer */
+ ir_mode *mode = get_ir_mode_arithmetic(type_void_ptr);
+ ir_node *res = new_Const(get_mode_null(mode));
+
+ return res;
}
- get_ir_type(type);
- /* FALLTHROUGH */
-
- case DECLARATION_KIND_ENUM_ENTRY: {
- ir_mode *const mode = get_ir_mode(type);
- return new_Const(mode, declaration->v.enum_val);
}
+ switch ((declaration_kind_t) entity->declaration.kind) {
+ case DECLARATION_KIND_UNKNOWN:
+ break;
+
case DECLARATION_KIND_LOCAL_VARIABLE: {
- ir_mode *const mode = get_ir_mode(type);
- return get_value(declaration->v.value_number, mode);
+ ir_mode *const mode = get_ir_mode_storage(type);
+ ir_node *const value = get_value(entity->variable.v.value_number, mode);
+ return create_conv(NULL, value, get_ir_mode_arithmetic(type));
+ }
+ case DECLARATION_KIND_PARAMETER: {
+ ir_mode *const mode = get_ir_mode_storage(type);
+ ir_node *const value = get_value(entity->parameter.v.value_number,mode);
+ return create_conv(NULL, value, get_ir_mode_arithmetic(type));
}
case DECLARATION_KIND_FUNCTION: {
- ir_mode *const mode = get_ir_mode(type);
- return create_symconst(dbgi, mode, declaration->v.entity);
+ return create_symconst(dbgi, entity->function.irentity);
+ }
+ case DECLARATION_KIND_INNER_FUNCTION: {
+ ir_mode *const mode = get_ir_mode_storage(type);
+ if (!entity->function.goto_to_outer && !entity->function.need_closure) {
+ /* inner function not using the closure */
+ return create_symconst(dbgi, entity->function.irentity);
+ } else {
+ /* need trampoline here */
+ return create_trampoline(dbgi, mode, entity->function.irentity);
+ }
}
case DECLARATION_KIND_GLOBAL_VARIABLE: {
- ir_node *const addr = get_global_var_address(dbgi, declaration);
- return deref_address(declaration->type, addr, dbgi);
+ const variable_t *variable = &entity->variable;
+ ir_node *const addr = create_symconst(dbgi, variable->v.entity);
+ return deref_address(dbgi, variable->base.type, addr);
}
case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
- ir_entity *entity = declaration->v.entity;
- ir_node *frame = get_local_frame(entity);
- ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
- return deref_address(declaration->type, sel, dbgi);
+ ir_entity *irentity = entity->variable.v.entity;
+ ir_node *frame = get_local_frame(irentity);
+ ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
+ return deref_address(dbgi, entity->declaration.type, sel);
+ }
+ case DECLARATION_KIND_PARAMETER_ENTITY: {
+ ir_entity *irentity = entity->parameter.v.entity;
+ ir_node *frame = get_local_frame(irentity);
+ ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
+ return deref_address(dbgi, entity->declaration.type, sel);
}
case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
- return declaration->v.vla_base;
+ return entity->variable.v.vla_base;
case DECLARATION_KIND_COMPOUND_MEMBER:
- case DECLARATION_KIND_LABEL_BLOCK:
panic("not implemented reference type");
}
static ir_node *reference_addr(const reference_expression_t *ref)
{
- dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
- declaration_t *declaration = ref->declaration;
+ dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
+ entity_t *entity = ref->entity;
+ assert(is_declaration(entity));
- switch((declaration_kind_t) declaration->declaration_kind) {
+ switch((declaration_kind_t) entity->declaration.kind) {
case DECLARATION_KIND_UNKNOWN:
break;
+ case DECLARATION_KIND_PARAMETER:
case DECLARATION_KIND_LOCAL_VARIABLE:
- panic("local variable without entity has no address");
- case DECLARATION_KIND_FUNCTION: {
- type_t *const type = skip_typeref(ref->base.type);
- ir_mode *const mode = get_ir_mode(type);
- return create_symconst(dbgi, mode, declaration->v.entity);
- }
+ /* you can store to a local variable (so we don't panic but return NULL
+ * as an indicator for no real address) */
+ return NULL;
case DECLARATION_KIND_GLOBAL_VARIABLE: {
- ir_node *const addr = get_global_var_address(dbgi, declaration);
+ ir_node *const addr = create_symconst(dbgi, entity->variable.v.entity);
return addr;
}
case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
- ir_entity *entity = declaration->v.entity;
- ir_node *frame = get_local_frame(entity);
- ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
+ ir_entity *irentity = entity->variable.v.entity;
+ ir_node *frame = get_local_frame(irentity);
+ ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
+
+ return sel;
+ }
+ case DECLARATION_KIND_PARAMETER_ENTITY: {
+ ir_entity *irentity = entity->parameter.v.entity;
+ ir_node *frame = get_local_frame(irentity);
+ ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
return sel;
}
case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
- return declaration->v.vla_base;
+ return entity->variable.v.vla_base;
+
+ case DECLARATION_KIND_FUNCTION: {
+ return create_symconst(dbgi, entity->function.irentity);
+ }
- case DECLARATION_KIND_ENUM_ENTRY:
- panic("trying to reference enum entry");
+ case DECLARATION_KIND_INNER_FUNCTION: {
+ type_t *const type = skip_typeref(entity->declaration.type);
+ ir_mode *const mode = get_ir_mode_storage(type);
+ if (!entity->function.goto_to_outer && !entity->function.need_closure) {
+ /* inner function not using the closure */
+ return create_symconst(dbgi, entity->function.irentity);
+ } else {
+ /* need trampoline here */
+ return create_trampoline(dbgi, mode, entity->function.irentity);
+ }
+ }
case DECLARATION_KIND_COMPOUND_MEMBER:
- case DECLARATION_KIND_LABEL_BLOCK:
panic("not implemented reference type");
}
panic("reference to declaration with unknown type found");
}
+/**
+ * Transform calls to builtin functions.
+ */
static ir_node *process_builtin_call(const call_expression_t *call)
{
dbg_info *dbgi = get_dbg_info(&call->base.source_position);
- assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
- builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
+ assert(call->function->kind == EXPR_REFERENCE);
+ reference_expression_t *builtin = &call->function->reference;
- type_t *type = skip_typeref(builtin->base.type);
- assert(is_type_pointer(type));
+ type_t *expr_type = skip_typeref(builtin->base.type);
+ assert(is_type_pointer(expr_type));
- type_t *function_type = skip_typeref(type->pointer.points_to);
- symbol_t *symbol = builtin->symbol;
+ type_t *function_type = skip_typeref(expr_type->pointer.points_to);
- switch(symbol->ID) {
- case T___builtin_alloca: {
- if(call->arguments == NULL || call->arguments->next != NULL) {
- panic("invalid number of parameters on __builtin_alloca");
- }
+ switch (builtin->entity->function.btk) {
+ case BUILTIN_NONE:
+ break;
+ case BUILTIN_ALLOCA: {
expression_t *argument = call->arguments->expression;
ir_node *size = expression_to_firm(argument);
ir_node *store = get_store();
- ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
+ ir_node *alloca = new_d_Alloc(dbgi, store, size, get_unknown_type(),
stack_alloc);
ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
set_store(proj_m);
return res;
}
- case T___builtin_nan:
- case T___builtin_nanf:
- case T___builtin_nand: {
+ case BUILTIN_INF: {
+ type_t *type = function_type->function.return_type;
+ ir_mode *mode = get_ir_mode_arithmetic(type);
+ ir_tarval *tv = get_mode_infinite(mode);
+ ir_node *res = new_d_Const(dbgi, tv);
+ return res;
+ }
+ case BUILTIN_NAN: {
/* Ignore string for now... */
assert(is_type_function(function_type));
- ir_mode *mode = get_ir_mode(function_type->function.return_type);
- tarval *tv = get_mode_NAN(mode);
- ir_node *res = new_d_Const(dbgi, mode, tv);
+ type_t *type = function_type->function.return_type;
+ ir_mode *mode = get_ir_mode_arithmetic(type);
+ ir_tarval *tv = get_mode_NAN(mode);
+ ir_node *res = new_d_Const(dbgi, tv);
return res;
}
- case T___builtin_va_end:
+ case BUILTIN_EXPECT: {
+ expression_t *argument = call->arguments->expression;
+ return _expression_to_firm(argument);
+ }
+ case BUILTIN_VA_END:
+ /* evaluate the argument of va_end for its side effects */
+ _expression_to_firm(call->arguments->expression);
return NULL;
- default:
- panic("Unsupported builtin found\n");
+ case BUILTIN_OBJECT_SIZE: {
+ /* determine value of "type" */
+ expression_t *type_expression = call->arguments->next->expression;
+ long type_val = fold_constant_to_int(type_expression);
+ type_t *type = function_type->function.return_type;
+ ir_mode *mode = get_ir_mode_arithmetic(type);
+ /* just produce a "I don't know" result */
+ ir_tarval *result = type_val & 2 ? get_mode_null(mode) :
+ get_mode_minus_one(mode);
+
+ return new_d_Const(dbgi, result);
+ }
+ case BUILTIN_ROTL: {
+ ir_node *val = expression_to_firm(call->arguments->expression);
+ ir_node *shf = expression_to_firm(call->arguments->next->expression);
+ ir_mode *mode = get_irn_mode(val);
+ ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
+ return new_d_Rotl(dbgi, val, create_conv(dbgi, shf, mode_uint), mode);
+ }
+ case BUILTIN_ROTR: {
+ ir_node *val = expression_to_firm(call->arguments->expression);
+ ir_node *shf = expression_to_firm(call->arguments->next->expression);
+ ir_mode *mode = get_irn_mode(val);
+ ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
+ ir_node *c = new_Const_long(mode_uint, get_mode_size_bits(mode));
+ ir_node *sub = new_d_Sub(dbgi, c, create_conv(dbgi, shf, mode_uint), mode_uint);
+ return new_d_Rotl(dbgi, val, sub, mode);
+ }
+ case BUILTIN_FIRM:
+ break;
+ case BUILTIN_LIBC:
+ case BUILTIN_LIBC_CHECK:
+ panic("builtin did not produce an entity");
}
+ panic("invalid builtin found");
}
-static ir_node *call_expression_to_firm(const call_expression_t *call)
-{
- assert(get_cur_block() != NULL);
-
- expression_t *function = call->function;
- if(function->kind == EXPR_BUILTIN_SYMBOL) {
- return process_builtin_call(call);
+/**
+ * Transform a call expression.
+ * Handles some special cases, like alloca() calls, which must be resolved
+ * BEFORE the inlines runs. Inlining routines calling alloca() is dangerous,
+ * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not
+ * handled right...
+ */
+static ir_node *call_expression_to_firm(const call_expression_t *const call)
+{
+ dbg_info *const dbgi = get_dbg_info(&call->base.source_position);
+ assert(currently_reachable());
+
+ expression_t *function = call->function;
+ ir_node *callee = NULL;
+ bool firm_builtin = false;
+ ir_builtin_kind firm_builtin_kind = ir_bk_trap;
+ if (function->kind == EXPR_REFERENCE) {
+ const reference_expression_t *ref = &function->reference;
+ entity_t *entity = ref->entity;
+
+ if (entity->kind == ENTITY_FUNCTION) {
+ builtin_kind_t builtin = entity->function.btk;
+ if (builtin == BUILTIN_FIRM) {
+ firm_builtin = true;
+ firm_builtin_kind = entity->function.b.firm_builtin_kind;
+ } else if (builtin != BUILTIN_NONE && builtin != BUILTIN_LIBC
+ && builtin != BUILTIN_LIBC_CHECK) {
+ return process_builtin_call(call);
+ }
+ }
}
- ir_node *callee = expression_to_firm(function);
+ if (!firm_builtin)
+ callee = expression_to_firm(function);
type_t *type = skip_typeref(function->base.type);
assert(is_type_pointer(type));
assert(is_type_function(points_to));
function_type_t *function_type = &points_to->function;
- int n_parameters = 0;
- call_argument_t *argument = call->arguments;
- for( ; argument != NULL; argument = argument->next) {
- ++n_parameters;
- }
-
- dbg_info *dbgi = get_dbg_info(&call->base.source_position);
-
+ int n_parameters = 0;
ir_type *ir_method_type = get_ir_type((type_t*) function_type);
ir_type *new_method_type = NULL;
- if(function_type->variadic || function_type->unspecified_parameters) {
+ if (function_type->variadic || function_type->unspecified_parameters) {
+ const call_argument_t *argument = call->arguments;
+ for ( ; argument != NULL; argument = argument->next) {
+ ++n_parameters;
+ }
+
/* we need to construct a new method type matching the call
* arguments... */
+ type_dbg_info *tdbgi = get_type_dbg_info_((const type_t*) function_type);
int n_res = get_method_n_ress(ir_method_type);
- dbg_info *dbgi = get_dbg_info(&call->base.source_position);
- new_method_type = new_d_type_method(unique_ident("calltype"),
- n_parameters, n_res, dbgi);
+ new_method_type = new_d_type_method(n_parameters, n_res, tdbgi);
set_method_calling_convention(new_method_type,
get_method_calling_convention(ir_method_type));
set_method_additional_properties(new_method_type,
get_method_additional_properties(ir_method_type));
+ set_method_variadicity(new_method_type,
+ get_method_variadicity(ir_method_type));
- for(int i = 0; i < n_res; ++i) {
+ for (int i = 0; i < n_res; ++i) {
set_method_res_type(new_method_type, i,
get_method_res_type(ir_method_type, i));
}
+ argument = call->arguments;
+ for (int i = 0; i < n_parameters; ++i, argument = argument->next) {
+ expression_t *expression = argument->expression;
+ ir_type *irtype = get_ir_type(expression->base.type);
+ set_method_param_type(new_method_type, i, irtype);
+ }
+ ir_method_type = new_method_type;
+ } else {
+ n_parameters = get_method_n_params(ir_method_type);
}
+
ir_node *in[n_parameters];
- argument = call->arguments;
- int n = 0;
- for( ; argument != NULL; argument = argument->next) {
+ const call_argument_t *argument = call->arguments;
+ for (int n = 0; n < n_parameters; ++n) {
expression_t *expression = argument->expression;
ir_node *arg_node = expression_to_firm(expression);
- arg_node = do_strict_conv(dbgi, arg_node);
+ type_t *arg_type = skip_typeref(expression->base.type);
+ if (!is_type_compound(arg_type)) {
+ ir_mode *const mode = get_ir_mode_storage(arg_type);
+ arg_node = create_conv(dbgi, arg_node, mode);
+ arg_node = do_strict_conv(dbgi, arg_node);
+ }
in[n] = arg_node;
- if(new_method_type != NULL) {
- ir_type *irtype = get_ir_type(expression->base.type);
- set_method_param_type(new_method_type, n, irtype);
- }
- n++;
+ argument = argument->next;
}
- assert(n == n_parameters);
-
- if(new_method_type != NULL)
- ir_method_type = new_method_type;
- ir_node *store = get_store();
- ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
- ir_method_type);
- ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
- set_store(mem);
+ ir_node *store;
+ if (function_type->modifiers & DM_CONST) {
+ store = get_irg_no_mem(current_ir_graph);
+ } else {
+ store = get_store();
+ }
+ ir_node *node;
type_t *return_type = skip_typeref(function_type->return_type);
ir_node *result = NULL;
+ if (firm_builtin) {
+ node = new_d_Builtin(dbgi, store, n_parameters, in, firm_builtin_kind,
+ ir_method_type);
+ if (! (function_type->modifiers & DM_CONST)) {
+ ir_node *mem = new_Proj(node, mode_M, pn_Builtin_M);
+ set_store(mem);
+ }
- if(!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
- ir_mode *mode;
- if(is_type_scalar(return_type)) {
- mode = get_ir_mode(return_type);
- } else {
- mode = mode_P_data;
+ if (!is_type_void(return_type)) {
+ assert(is_type_scalar(return_type));
+ ir_mode *mode = get_ir_mode_storage(return_type);
+ result = new_Proj(node, mode, pn_Builtin_max+1);
+ ir_mode *mode_arith = get_ir_mode_arithmetic(return_type);
+ result = create_conv(NULL, result, mode_arith);
+ }
+ } else {
+ node = new_d_Call(dbgi, store, callee, n_parameters, in, ir_method_type);
+ if (! (function_type->modifiers & DM_CONST)) {
+ ir_node *mem = new_Proj(node, mode_M, pn_Call_M);
+ set_store(mem);
+ }
+
+ if (!is_type_void(return_type)) {
+ ir_node *const resproj = new_Proj(node, mode_T, pn_Call_T_result);
+ ir_mode *const mode = get_ir_mode_storage(return_type);
+ result = new_Proj(resproj, mode, 0);
+ ir_mode *const mode_arith = get_ir_mode_arithmetic(return_type);
+ result = create_conv(NULL, result, mode_arith);
}
- ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
- result = new_d_Proj(dbgi, resproj, mode, 0);
+ }
+
+ if (function_type->modifiers & DM_NORETURN) {
+ /* A dead end: Keep the Call and the Block. Also place all further
+ * nodes into a new and unreachable block. */
+ keep_alive(node);
+ keep_alive(get_cur_block());
+ ir_node *block = new_Block(0, NULL);
+ set_cur_block(block);
}
return result;
}
-static void statement_to_firm(statement_t *statement);
+static ir_node *statement_to_firm(statement_t *statement);
static ir_node *compound_statement_to_firm(compound_statement_t *compound);
static ir_node *expression_to_addr(const expression_t *expression);
-static void create_condition_evaluation(const expression_t *expression,
- ir_node *true_block,
- ir_node *false_block);
+static ir_node *create_condition_evaluation(const expression_t *expression,
+ ir_node *true_block,
+ ir_node *false_block);
static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
ir_node *value)
{
- value = do_strict_conv(dbgi, value);
+ if (!is_type_compound(type)) {
+ ir_mode *mode = get_ir_mode_storage(type);
+ value = create_conv(dbgi, value, mode);
+ value = do_strict_conv(dbgi, value);
+ }
ir_node *memory = get_store();
- if(is_type_scalar(type)) {
- ir_node *store = new_d_Store(dbgi, memory, addr, value);
+ if (is_type_scalar(type)) {
+ ir_cons_flags flags = type->base.qualifiers & TYPE_QUALIFIER_VOLATILE
+ ? cons_volatile : cons_none;
+ ir_node *store = new_d_Store(dbgi, memory, addr, value, flags);
ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
- if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
- set_Store_volatility(store, volatility_is_volatile);
set_store(store_mem);
} else {
ir_type *irtype = get_ir_type(type);
ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
- ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
+ ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M);
set_store(copyb_mem);
}
}
-static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
+static ir_tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
{
- tarval *all_one = get_mode_all_one(mode);
- int mode_size = get_mode_size_bits(mode);
+ ir_tarval *all_one = get_mode_all_one(mode);
+ int mode_size = get_mode_size_bits(mode);
+ ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
- assert(offset >= 0 && size >= 0);
+ assert(offset >= 0);
+ assert(size >= 0);
assert(offset + size <= mode_size);
- if(size == mode_size) {
+ if (size == mode_size) {
return all_one;
}
- long shiftr = get_mode_size_bits(mode) - size;
- long shiftl = offset;
- tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
- tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
- tarval *mask0 = tarval_shr(all_one, tv_shiftr);
- tarval *mask1 = tarval_shl(mask0, tv_shiftl);
+ long shiftr = get_mode_size_bits(mode) - size;
+ long shiftl = offset;
+ ir_tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
+ ir_tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
+ ir_tarval *mask0 = tarval_shr(all_one, tv_shiftr);
+ ir_tarval *mask1 = tarval_shl(mask0, tv_shiftl);
return mask1;
}
-static void bitfield_store_to_firm(const unary_expression_t *expression,
- ir_node *value)
+static ir_node *bitfield_store_to_firm(dbg_info *dbgi,
+ ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile,
+ bool need_return)
{
- expression_t *select = expression->value;
- assert(select->kind == EXPR_SELECT);
- type_t *type = select->base.type;
- assert(type->kind == TYPE_BITFIELD);
- ir_mode *mode = get_ir_mode(type->bitfield.base_type);
- ir_node *addr = expression_to_addr(select);
+ ir_type *entity_type = get_entity_type(entity);
+ ir_type *base_type = get_primitive_base_type(entity_type);
+ ir_mode *mode = get_type_mode(base_type);
+ ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
- assert(get_irn_mode(value) == mode);
-
- dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
+ value = create_conv(dbgi, value, mode);
/* kill upper bits of value and shift to right position */
- ir_entity *entity = select->select.compound_entry->v.entity;
- int bitoffset = get_entity_offset_bits_remainder(entity);
- ir_type *entity_type = get_entity_type(entity);
- int bitsize = get_mode_size_bits(get_type_mode(entity_type));
-
- tarval *mask = create_bitfield_mask(mode, 0, bitsize);
- ir_node *mask_node = new_d_Const(dbgi, mode, mask);
- ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
- tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
- ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
- ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
+ unsigned bitoffset = get_entity_offset_bits_remainder(entity);
+ unsigned bitsize = get_mode_size_bits(get_type_mode(entity_type));
+ unsigned base_bits = get_mode_size_bits(mode);
+ unsigned shiftwidth = base_bits - bitsize;
+
+ ir_node *shiftcount = new_Const_long(mode_uint, shiftwidth);
+ ir_node *shiftl = new_d_Shl(dbgi, value, shiftcount, mode);
+
+ unsigned shrwidth = base_bits - bitsize - bitoffset;
+ ir_node *shrconst = new_Const_long(mode_uint, shrwidth);
+ ir_node *shiftr = new_d_Shr(dbgi, shiftl, shrconst, mode);
/* load current value */
- ir_node *mem = get_store();
- ir_node *load = new_d_Load(dbgi, mem, addr, mode);
- ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
- ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
- tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
- tarval *inv_mask = tarval_not(shift_mask);
- ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
- ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
+ ir_node *mem = get_store();
+ ir_node *load = new_d_Load(dbgi, mem, addr, mode,
+ set_volatile ? cons_volatile : cons_none);
+ ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
+ ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
+ ir_tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
+ ir_tarval *inv_mask = tarval_not(shift_mask);
+ ir_node *inv_mask_node = new_d_Const(dbgi, inv_mask);
+ ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
/* construct new value and store */
- ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
- ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
+ ir_node *new_val = new_d_Or(dbgi, load_res_masked, shiftr, mode);
+ ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val,
+ set_volatile ? cons_volatile : cons_none);
ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
set_store(store_mem);
- if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
- set_Load_volatility(load, volatility_is_volatile);
- set_Store_volatility(store, volatility_is_volatile);
+ if (!need_return)
+ return NULL;
+
+ ir_node *res_shr;
+ ir_node *count_res_shr = new_Const_long(mode_uint, base_bits - bitsize);
+ if (mode_is_signed(mode)) {
+ res_shr = new_d_Shrs(dbgi, shiftl, count_res_shr, mode);
+ } else {
+ res_shr = new_d_Shr(dbgi, shiftl, count_res_shr, mode);
}
+ return res_shr;
}
-static void set_value_for_expression(const expression_t *expression,
- ir_node *value)
+static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
+ ir_node *addr)
{
- dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
- value = do_strict_conv(dbgi, value);
-
- if(expression->kind == EXPR_REFERENCE) {
- const reference_expression_t *ref = &expression->reference;
+ dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
+ entity_t *entity = expression->compound_entry;
+ type_t *base_type = entity->declaration.type;
+ ir_mode *mode = get_ir_mode_storage(base_type);
+ ir_node *mem = get_store();
+ ir_node *load = new_d_Load(dbgi, mem, addr, mode, cons_none);
+ ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
+ ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
+ ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
- declaration_t *declaration = ref->declaration;
- assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
- if(declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
- set_value(declaration->v.value_number, value);
- return;
- }
+ ir_mode *amode = mode;
+ /* optimisation, since shifting in modes < machine_size is usually
+ * less efficient */
+ if (get_mode_size_bits(amode) < get_mode_size_bits(mode_uint)) {
+ amode = mode_uint;
}
+ unsigned amode_size = get_mode_size_bits(amode);
+ load_res = create_conv(dbgi, load_res, amode);
- if(expression->kind == EXPR_UNARY_BITFIELD_EXTRACT) {
- bitfield_store_to_firm(&expression->unary, value);
- return;
- }
+ set_store(load_mem);
+
+ /* kill upper bits */
+ assert(expression->compound_entry->kind == ENTITY_COMPOUND_MEMBER);
+ unsigned bitoffset = entity->compound_member.bit_offset;
+ unsigned bitsize = entity->compound_member.bit_size;
+ unsigned shift_bitsl = amode_size - bitoffset - bitsize;
+ ir_tarval *tvl = new_tarval_from_long((long)shift_bitsl, mode_uint);
+ ir_node *countl = new_d_Const(dbgi, tvl);
+ ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, amode);
+
+ unsigned shift_bitsr = bitoffset + shift_bitsl;
+ assert(shift_bitsr <= amode_size);
+ ir_tarval *tvr = new_tarval_from_long((long)shift_bitsr, mode_uint);
+ ir_node *countr = new_d_Const(dbgi, tvr);
+ ir_node *shiftr;
+ if (mode_is_signed(mode)) {
+ shiftr = new_d_Shrs(dbgi, shiftl, countr, amode);
+ } else {
+ shiftr = new_d_Shr(dbgi, shiftl, countr, amode);
+ }
+
+ type_t *type = expression->base.type;
+ ir_mode *resmode = get_ir_mode_arithmetic(type);
+ return create_conv(dbgi, shiftr, resmode);
+}
+
+/* make sure the selected compound type is constructed */
+static void construct_select_compound(const select_expression_t *expression)
+{
+ type_t *type = skip_typeref(expression->compound->base.type);
+ if (is_type_pointer(type)) {
+ type = type->pointer.points_to;
+ }
+ (void) get_ir_type(type);
+}
+
+static ir_node *set_value_for_expression_addr(const expression_t *expression,
+ ir_node *value, ir_node *addr)
+{
+ dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
+ type_t *type = skip_typeref(expression->base.type);
+
+ if (!is_type_compound(type)) {
+ ir_mode *mode = get_ir_mode_storage(type);
+ value = create_conv(dbgi, value, mode);
+ value = do_strict_conv(dbgi, value);
+ }
+
+ if (expression->kind == EXPR_REFERENCE) {
+ const reference_expression_t *ref = &expression->reference;
+
+ entity_t *entity = ref->entity;
+ assert(is_declaration(entity));
+ assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
+ if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
+ set_value(entity->variable.v.value_number, value);
+ return value;
+ } else if (entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
+ set_value(entity->parameter.v.value_number, value);
+ return value;
+ }
+ }
+
+ if (addr == NULL)
+ addr = expression_to_addr(expression);
+ assert(addr != NULL);
+
+ if (expression->kind == EXPR_SELECT) {
+ const select_expression_t *select = &expression->select;
+
+ construct_select_compound(select);
+
+ entity_t *entity = select->compound_entry;
+ assert(entity->kind == ENTITY_COMPOUND_MEMBER);
+ if (entity->compound_member.bitfield) {
+ ir_entity *irentity = entity->compound_member.entity;
+ bool set_volatile
+ = select->base.type->base.qualifiers & TYPE_QUALIFIER_VOLATILE;
+ value = bitfield_store_to_firm(dbgi, irentity, addr, value,
+ set_volatile, true);
+ return value;
+ }
+ }
- ir_node *addr = expression_to_addr(expression);
- type_t *type = skip_typeref(expression->base.type);
assign_value(dbgi, addr, type, value);
+ return value;
}
-static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
+static void set_value_for_expression(const expression_t *expression,
+ ir_node *value)
{
- ir_mode *value_mode = get_irn_mode(value);
+ set_value_for_expression_addr(expression, value, NULL);
+}
- if (value_mode == dest_mode || is_Bad(value))
- return value;
+static ir_node *get_value_from_lvalue(const expression_t *expression,
+ ir_node *addr)
+{
+ if (expression->kind == EXPR_REFERENCE) {
+ const reference_expression_t *ref = &expression->reference;
+
+ entity_t *entity = ref->entity;
+ assert(entity->kind == ENTITY_VARIABLE
+ || entity->kind == ENTITY_PARAMETER);
+ assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
+ int value_number;
+ if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
+ value_number = entity->variable.v.value_number;
+ assert(addr == NULL);
+ type_t *type = skip_typeref(expression->base.type);
+ ir_mode *mode = get_ir_mode_storage(type);
+ ir_node *res = get_value(value_number, mode);
+ return create_conv(NULL, res, get_ir_mode_arithmetic(type));
+ } else if (entity->declaration.kind == DECLARATION_KIND_PARAMETER) {
+ value_number = entity->parameter.v.value_number;
+ assert(addr == NULL);
+ type_t *type = skip_typeref(expression->base.type);
+ ir_mode *mode = get_ir_mode_storage(type);
+ ir_node *res = get_value(value_number, mode);
+ return create_conv(NULL, res, get_ir_mode_arithmetic(type));
+ }
+ }
+
+ assert(addr != NULL);
+ dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
- if(dest_mode == mode_b) {
- ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
- ir_node *cmp = new_d_Cmp(dbgi, value, zero);
- ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
- return proj;
+ ir_node *value;
+ if (expression->kind == EXPR_SELECT &&
+ expression->select.compound_entry->compound_member.bitfield) {
+ construct_select_compound(&expression->select);
+ value = bitfield_extract_to_firm(&expression->select, addr);
+ } else {
+ value = deref_address(dbgi, expression->base.type, addr);
}
- return new_d_Conv(dbgi, value, dest_mode);
+ return value;
}
+
static ir_node *create_incdec(const unary_expression_t *expression)
{
- dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
- type_t *type = skip_typeref(expression->base.type);
- ir_mode *mode = get_ir_mode(type);
- expression_t *value = expression->value;
+ dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
+ const expression_t *value_expr = expression->value;
+ ir_node *addr = expression_to_addr(value_expr);
+ ir_node *value = get_value_from_lvalue(value_expr, addr);
- ir_node *value_node = expression_to_firm(value);
+ type_t *type = skip_typeref(expression->base.type);
+ ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
ir_node *offset;
- if(is_type_pointer(type)) {
+ if (is_type_pointer(type)) {
pointer_type_t *pointer_type = &type->pointer;
- offset = get_type_size(pointer_type->points_to);
+ offset = get_type_size_node(pointer_type->points_to);
} else {
assert(is_type_arithmetic(type));
- offset = new_Const(mode, get_mode_one(mode));
+ offset = new_Const(get_mode_one(mode));
}
+ ir_node *result;
+ ir_node *store_value;
switch(expression->base.kind) {
- case EXPR_UNARY_POSTFIX_INCREMENT: {
- ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
- set_value_for_expression(value, new_value);
- return value_node;
- }
- case EXPR_UNARY_POSTFIX_DECREMENT: {
- ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
- set_value_for_expression(value, new_value);
- return value_node;
- }
- case EXPR_UNARY_PREFIX_INCREMENT: {
- ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
- set_value_for_expression(value, new_value);
- return new_value;
- }
- case EXPR_UNARY_PREFIX_DECREMENT: {
- ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
- set_value_for_expression(value, new_value);
- return new_value;
- }
+ case EXPR_UNARY_POSTFIX_INCREMENT:
+ result = value;
+ store_value = new_d_Add(dbgi, value, offset, mode);
+ break;
+ case EXPR_UNARY_POSTFIX_DECREMENT:
+ result = value;
+ store_value = new_d_Sub(dbgi, value, offset, mode);
+ break;
+ case EXPR_UNARY_PREFIX_INCREMENT:
+ result = new_d_Add(dbgi, value, offset, mode);
+ store_value = result;
+ break;
+ case EXPR_UNARY_PREFIX_DECREMENT:
+ result = new_d_Sub(dbgi, value, offset, mode);
+ store_value = result;
+ break;
default:
panic("no incdec expr in create_incdec");
- return NULL;
}
+
+ set_value_for_expression_addr(value_expr, store_value, addr);
+
+ return result;
}
static bool is_local_variable(expression_t *expression)
{
if (expression->kind != EXPR_REFERENCE)
return false;
- reference_expression_t *ref_expr = &expression->reference;
- declaration_t *declaration = ref_expr->declaration;
- return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE;
+ reference_expression_t *ref_expr = &expression->reference;
+ entity_t *entity = ref_expr->entity;
+ if (entity->kind != ENTITY_VARIABLE)
+ return false;
+ assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
+ return entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE;
}
-static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
+static ir_relation get_relation(const expression_kind_t kind)
{
switch(kind) {
- case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
- case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
- case EXPR_BINARY_NOTEQUAL:
- return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
+ case EXPR_BINARY_EQUAL: return ir_relation_equal;
+ case EXPR_BINARY_ISLESSGREATER: return ir_relation_less_greater;
+ case EXPR_BINARY_NOTEQUAL: return ir_relation_unordered_less_greater;
case EXPR_BINARY_ISLESS:
- case EXPR_BINARY_LESS: return pn_Cmp_Lt;
+ case EXPR_BINARY_LESS: return ir_relation_less;
case EXPR_BINARY_ISLESSEQUAL:
- case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
+ case EXPR_BINARY_LESSEQUAL: return ir_relation_less_equal;
case EXPR_BINARY_ISGREATER:
- case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
+ case EXPR_BINARY_GREATER: return ir_relation_greater;
case EXPR_BINARY_ISGREATEREQUAL:
- case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
- case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
+ case EXPR_BINARY_GREATEREQUAL: return ir_relation_greater_equal;
+ case EXPR_BINARY_ISUNORDERED: return ir_relation_unordered;
default:
break;
static ir_node *handle_assume_compare(dbg_info *dbi,
const binary_expression_t *expression)
{
- expression_t *op1 = expression->left;
- expression_t *op2 = expression->right;
- declaration_t *var2, *var = NULL;
- ir_node *res = NULL;
- pn_Cmp cmp_val;
-
- cmp_val = get_pnc(expression->base.kind, op1->base.type);
+ expression_t *op1 = expression->left;
+ expression_t *op2 = expression->right;
+ entity_t *var2, *var = NULL;
+ ir_node *res = NULL;
+ ir_relation relation = get_relation(expression->base.kind);
if (is_local_variable(op1) && is_local_variable(op2)) {
- var = op1->reference.declaration;
- var2 = op2->reference.declaration;
+ var = op1->reference.entity;
+ var2 = op2->reference.entity;
- type_t *const type = skip_typeref(var->type);
- ir_mode *const mode = get_ir_mode(type);
+ type_t *const type = skip_typeref(var->declaration.type);
+ ir_mode *const mode = get_ir_mode_storage(type);
- ir_node *const irn1 = get_value(var->v.value_number, mode);
- ir_node *const irn2 = get_value(var2->v.value_number, mode);
+ ir_node *const irn1 = get_value(var->variable.v.value_number, mode);
+ ir_node *const irn2 = get_value(var2->variable.v.value_number, mode);
- res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
- set_value(var2->v.value_number, res);
+ res = new_d_Confirm(dbi, irn2, irn1, get_inversed_relation(relation));
+ set_value(var2->variable.v.value_number, res);
- res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
- set_value(var->v.value_number, res);
+ res = new_d_Confirm(dbi, irn1, irn2, relation);
+ set_value(var->variable.v.value_number, res);
return res;
}
- expression_t *con;
- if (is_local_variable(op1) && is_constant_expression(op2)) {
- var = op1->reference.declaration;
+ expression_t *con = NULL;
+ if (is_local_variable(op1) && is_constant_expression(op2) == EXPR_CLASS_CONSTANT) {
+ var = op1->reference.entity;
con = op2;
- } else if (is_constant_expression(op1) && is_local_variable(op2)) {
- cmp_val = get_inversed_pnc(cmp_val);
- var = op2->reference.declaration;
+ } else if (is_constant_expression(op1) == EXPR_CLASS_CONSTANT && is_local_variable(op2)) {
+ relation = get_inversed_relation(relation);
+ var = op2->reference.entity;
con = op1;
}
if (var != NULL) {
- type_t *const type = skip_typeref(var->type);
- ir_mode *const mode = get_ir_mode(type);
+ type_t *const type = skip_typeref(var->declaration.type);
+ ir_mode *const mode = get_ir_mode_storage(type);
- res = get_value(var->v.value_number, mode);
- res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
- set_value(var->v.value_number, res);
+ res = get_value(var->variable.v.value_number, mode);
+ res = new_d_Confirm(dbi, res, expression_to_firm(con), relation);
+ set_value(var->variable.v.value_number, res);
}
return res;
}
* @param dbi debug info
* @param expr the IL assume expression
*/
-static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
+static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression)
+{
switch(expression->kind) {
case EXPR_BINARY_EQUAL:
case EXPR_BINARY_NOTEQUAL:
}
}
-static ir_node *bitfield_extract_to_firm(const unary_expression_t *expression)
+static ir_node *create_cast(dbg_info *dbgi, ir_node *value_node,
+ type_t *from_type, type_t *type)
{
- expression_t *select = expression->value;
- assert(select->kind == EXPR_SELECT);
-
- type_t *type = select->base.type;
- assert(type->kind == TYPE_BITFIELD);
- ir_mode *mode = get_ir_mode(type->bitfield.base_type);
- dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
- ir_node *addr = expression_to_addr(select);
- ir_node *mem = get_store();
- ir_node *load = new_d_Load(dbgi, mem, addr, mode);
- ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
- ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
-
- load_res = create_conv(dbgi, load_res, mode_int);
+ type = skip_typeref(type);
+ if (is_type_void(type)) {
+ /* make sure firm type is constructed */
+ (void) get_ir_type(type);
+ return NULL;
+ }
+ if (!is_type_scalar(type)) {
+ /* make sure firm type is constructed */
+ (void) get_ir_type(type);
+ return value_node;
+ }
- set_store(load_mem);
+ from_type = skip_typeref(from_type);
+ ir_mode *mode = get_ir_mode_storage(type);
+ /* check for conversion from / to __based types */
+ if (is_type_pointer(type) && is_type_pointer(from_type)) {
+ const variable_t *from_var = from_type->pointer.base_variable;
+ const variable_t *to_var = type->pointer.base_variable;
+ if (from_var != to_var) {
+ if (from_var != NULL) {
+ ir_node *const addr = create_symconst(dbgi, from_var->v.entity);
+ ir_node *const base = deref_address(dbgi, from_var->base.type, addr);
+ value_node = new_d_Add(dbgi, value_node, base, mode);
+ }
+ if (to_var != NULL) {
+ ir_node *const addr = create_symconst(dbgi, to_var->v.entity);
+ ir_node *const base = deref_address(dbgi, to_var->base.type, addr);
+ value_node = new_d_Sub(dbgi, value_node, base, mode);
+ }
+ }
+ }
- /* kill upper bits */
- ir_entity *entity = select->select.compound_entry->v.entity;
- int bitoffset = get_entity_offset_bits_remainder(entity);
- ir_type *entity_type = get_entity_type(entity);
- int bitsize = get_mode_size_bits(get_type_mode(entity_type));
- long shift_bitsl = machine_size - bitoffset - bitsize;
- assert(shift_bitsl >= 0);
- tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
- ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
- ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
-
- long shift_bitsr = bitoffset + shift_bitsl;
- assert(shift_bitsr <= (long) machine_size);
- tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
- ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
- ir_node *shiftr;
- if(mode_is_signed(mode)) {
- shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
- } else {
- shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
+ if (is_type_atomic(type, ATOMIC_TYPE_BOOL)) {
+ /* bool adjustments (we save a mode_Bu, but have to temporarily
+ * convert to mode_b so we only get a 0/1 value */
+ value_node = create_conv(dbgi, value_node, mode_b);
}
- return create_conv(dbgi, shiftr, mode);
+ ir_mode *mode_arith = get_ir_mode_arithmetic(type);
+ ir_node *node = create_conv(dbgi, value_node, mode);
+ node = do_strict_conv(dbgi, node);
+ node = create_conv(dbgi, node, mode_arith);
+
+ return node;
}
static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
type_t *type = skip_typeref(expression->base.type);
- if(expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
- return expression_to_addr(expression->value);
-
const expression_t *value = expression->value;
switch(expression->base.kind) {
+ case EXPR_UNARY_TAKE_ADDRESS:
+ return expression_to_addr(value);
+
case EXPR_UNARY_NEGATE: {
ir_node *value_node = expression_to_firm(value);
- ir_mode *mode = get_ir_mode(type);
+ ir_mode *mode = get_ir_mode_arithmetic(type);
return new_d_Minus(dbgi, value_node, mode);
}
case EXPR_UNARY_PLUS:
return expression_to_firm(value);
case EXPR_UNARY_BITWISE_NEGATE: {
ir_node *value_node = expression_to_firm(value);
- ir_mode *mode = get_ir_mode(type);
+ ir_mode *mode = get_ir_mode_arithmetic(type);
return new_d_Not(dbgi, value_node, mode);
}
case EXPR_UNARY_NOT: {
- ir_node *value_node = expression_to_firm(value);
- ir_mode *mode = get_ir_mode(type);
- if(get_irn_mode(value_node) != mode_b) {
- value_node = create_conv(dbgi, value_node, mode_b);
- }
- value_node = new_d_Not(dbgi, value_node, mode_b);
- if(mode != mode_b) {
- value_node = create_conv(dbgi, value_node, mode);
- }
- return value_node;
+ ir_node *value_node = _expression_to_firm(value);
+ value_node = create_conv(dbgi, value_node, mode_b);
+ ir_node *res = new_d_Not(dbgi, value_node, mode_b);
+ return res;
}
case EXPR_UNARY_DEREFERENCE: {
ir_node *value_node = expression_to_firm(value);
type_t *value_type = skip_typeref(value->base.type);
assert(is_type_pointer(value_type));
+
+ /* check for __based */
+ const variable_t *const base_var = value_type->pointer.base_variable;
+ if (base_var != NULL) {
+ ir_node *const addr = create_symconst(dbgi, base_var->v.entity);
+ ir_node *const base = deref_address(dbgi, base_var->base.type, addr);
+ value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(value_type));
+ }
type_t *points_to = value_type->pointer.points_to;
- return deref_address(points_to, value_node, dbgi);
+ return deref_address(dbgi, points_to, value_node);
}
case EXPR_UNARY_POSTFIX_INCREMENT:
case EXPR_UNARY_POSTFIX_DECREMENT:
return create_incdec(expression);
case EXPR_UNARY_CAST: {
ir_node *value_node = expression_to_firm(value);
- if(is_type_scalar(type)) {
- ir_mode *mode = get_ir_mode(type);
- ir_node *node = create_conv(dbgi, value_node, mode);
- node = do_strict_conv(dbgi, node);
- return node;
- } else {
- /* make sure firm type is constructed */
- (void) get_ir_type(type);
- return value_node;
- }
- }
- case EXPR_UNARY_CAST_IMPLICIT: {
- ir_node *value_node = expression_to_firm(value);
- if(is_type_scalar(type)) {
- ir_mode *mode = get_ir_mode(type);
- return create_conv(dbgi, value_node, mode);
- } else {
- return value_node;
- }
+ type_t *from_type = value->base.type;
+ return create_cast(dbgi, value_node, from_type, type);
}
case EXPR_UNARY_ASSUME:
- if(firm_opt.confirm)
- return handle_assume(dbgi, value);
- else
- return NULL;
- case EXPR_UNARY_BITFIELD_EXTRACT:
- return bitfield_extract_to_firm(expression);
+ return handle_assume(dbgi, value);
default:
break;
panic("invalid UNEXPR type found");
}
+/**
+ * produces a 0/1 depending of the value of a mode_b node
+ */
static ir_node *produce_condition_result(const expression_t *expression,
- dbg_info *dbgi)
+ ir_mode *mode, dbg_info *dbgi)
{
- ir_mode *mode = get_ir_mode(expression->base.type);
- ir_node *cur_block = get_cur_block();
-
- ir_node *one_block = new_immBlock();
- ir_node *one = new_Const(mode, get_mode_one(mode));
- ir_node *jmp_one = new_d_Jmp(dbgi);
-
- ir_node *zero_block = new_immBlock();
- ir_node *zero = new_Const(mode, get_mode_null(mode));
- ir_node *jmp_zero = new_d_Jmp(dbgi);
-
- set_cur_block(cur_block);
+ ir_node *const one_block = new_immBlock();
+ ir_node *const zero_block = new_immBlock();
create_condition_evaluation(expression, one_block, zero_block);
mature_immBlock(one_block);
mature_immBlock(zero_block);
- ir_node *common_block = new_immBlock();
- add_immBlock_pred(common_block, jmp_one);
- add_immBlock_pred(common_block, jmp_zero);
- mature_immBlock(common_block);
+ ir_node *const jmp_one = new_rd_Jmp(dbgi, one_block);
+ ir_node *const jmp_zero = new_rd_Jmp(dbgi, zero_block);
+ ir_node *const in_cf[2] = { jmp_one, jmp_zero };
+ ir_node *const block = new_Block(lengthof(in_cf), in_cf);
+ set_cur_block(block);
- ir_node *in[2] = { one, zero };
- ir_node *val = new_d_Phi(dbgi, 2, in, mode);
+ ir_node *const one = new_Const(get_mode_one(mode));
+ ir_node *const zero = new_Const(get_mode_null(mode));
+ ir_node *const in[2] = { one, zero };
+ ir_node *const val = new_d_Phi(dbgi, lengthof(in), in, mode);
return val;
}
-static ir_node *create_lazy_op(const binary_expression_t *expression)
-{
- dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
- type_t *type = expression->base.type;
- ir_mode *mode = get_ir_mode(type);
-
- if(is_constant_expression(expression->left)) {
- long val = fold_constant(expression->left);
- expression_kind_t ekind = expression->base.kind;
- if((ekind == EXPR_BINARY_LOGICAL_AND && val != 0)
- || (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
- return expression_to_firm(expression->right);
- } else {
- assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0)
- || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0));
- return new_Const(mode, get_mode_one(mode));
- }
- }
-
- return produce_condition_result((const expression_t*) expression, dbgi);
-}
-
-typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
- ir_node *right, ir_mode *mode);
-
-static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
- create_arithmetic_func func)
-{
- dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
- ir_node *left = expression_to_firm(expression->left);
- ir_node *right = expression_to_firm(expression->right);
- type_t *type = expression->right->base.type;
- /* be careful with the modes, because in arithmetic assign nodes only
- * the right operand has the mode of the arithmetic already */
- ir_mode *mode = get_ir_mode(type);
- left = create_conv(dbgi, left, mode);
- ir_node *res = func(dbgi, left, right, mode);
-
- return res;
-}
-
-static ir_node *pointer_arithmetic(ir_node *const pointer,
- ir_node * integer,
- type_t *const type,
- dbg_info *const dbgi,
- const create_arithmetic_func func)
+static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
+ ir_node *value, type_t *type)
{
+ ir_mode *const mode = get_ir_mode_arithmetic(type_ptrdiff_t);
+ assert(is_type_pointer(type));
pointer_type_t *const pointer_type = &type->pointer;
- type_t *const points_to = pointer_type->points_to;
- const unsigned elem_size = get_type_size_const(points_to);
-
- assert(elem_size >= 1);
- if (elem_size > 1) {
- integer = create_conv(dbgi, integer, mode_int);
- ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
- ir_node *const mul = new_d_Mul(dbgi, integer, cnst, mode_int);
- integer = mul;
- }
-
- ir_mode *const mode = get_ir_mode(type);
- return func(dbgi, pointer, integer, mode);
+ type_t *const points_to = skip_typeref(pointer_type->points_to);
+ ir_node * elem_size = get_type_size_node(points_to);
+ elem_size = create_conv(dbgi, elem_size, mode);
+ value = create_conv(dbgi, value, mode);
+ ir_node *const mul = new_d_Mul(dbgi, value, elem_size, mode);
+ return mul;
}
-static ir_node *create_arithmetic_assign_binop(
- const binary_expression_t *expression, create_arithmetic_func func)
+static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
+ ir_node *left, ir_node *right)
{
- dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
- type_t *const type = skip_typeref(expression->base.type);
- ir_node *value;
-
- if (is_type_pointer(type)) {
- ir_node *const pointer = expression_to_firm(expression->left);
- ir_node * integer = expression_to_firm(expression->right);
- value = pointer_arithmetic(pointer, integer, type, dbgi, func);
- } else {
- value = create_arithmetic_binop(expression, func);
- }
-
- ir_mode *const mode = get_ir_mode(type);
- value = create_conv(dbgi, value, mode);
- set_value_for_expression(expression->left, value);
+ ir_mode *mode;
+ type_t *type_left = skip_typeref(expression->left->base.type);
+ type_t *type_right = skip_typeref(expression->right->base.type);
- return value;
-}
+ expression_kind_t kind = expression->base.kind;
-static ir_node *create_add(const binary_expression_t *expression)
-{
- dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
- ir_node *left = expression_to_firm(expression->left);
- ir_node *right = expression_to_firm(expression->right);
- type_t *type = expression->base.type;
+ switch (kind) {
+ case EXPR_BINARY_SHIFTLEFT:
+ case EXPR_BINARY_SHIFTRIGHT:
+ case EXPR_BINARY_SHIFTLEFT_ASSIGN:
+ case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
+ mode = get_ir_mode_arithmetic(expression->base.type);
+ right = create_conv(dbgi, right, atomic_modes[ATOMIC_TYPE_UINT]);
+ break;
- expression_t *expr_left = expression->left;
- expression_t *expr_right = expression->right;
- type_t *type_left = skip_typeref(expr_left->base.type);
- type_t *type_right = skip_typeref(expr_right->base.type);
+ case EXPR_BINARY_SUB:
+ if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
+ const pointer_type_t *const ptr_type = &type_left->pointer;
+
+ mode = get_ir_mode_arithmetic(expression->base.type);
+ ir_node *const elem_size = get_type_size_node(ptr_type->points_to);
+ ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
+ ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
+ ir_node *const no_mem = new_NoMem();
+ ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
+ mode, op_pin_state_floats);
+ return new_d_Proj(dbgi, div, mode, pn_Div_res);
+ }
+ /* fallthrough */
+ case EXPR_BINARY_SUB_ASSIGN:
+ if (is_type_pointer(type_left)) {
+ right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
+ mode = get_ir_mode_arithmetic(type_left);
+ break;
+ }
+ goto normal_node;
- if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
- ir_mode *const mode = get_ir_mode(type);
- return new_d_Add(dbgi, left, right, mode);
- }
+ case EXPR_BINARY_ADD:
+ case EXPR_BINARY_ADD_ASSIGN:
+ if (is_type_pointer(type_left)) {
+ right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
+ mode = get_ir_mode_arithmetic(type_left);
+ break;
+ } else if (is_type_pointer(type_right)) {
+ left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
+ mode = get_ir_mode_arithmetic(type_right);
+ break;
+ }
+ goto normal_node;
- if (is_type_pointer(type_left)) {
- return pointer_arithmetic(left, right, type, dbgi, new_d_Add);
- } else {
- assert(is_type_pointer(type_right));
- return pointer_arithmetic(right, left, type, dbgi, new_d_Add);
+ default:
+normal_node:
+ mode = get_ir_mode_arithmetic(type_right);
+ left = create_conv(dbgi, left, mode);
+ break;
}
-}
-
-static ir_node *create_sub(const binary_expression_t *expression)
-{
- dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
- expression_t *const expr_left = expression->left;
- expression_t *const expr_right = expression->right;
- ir_node *const left = expression_to_firm(expr_left);
- ir_node *const right = expression_to_firm(expr_right);
- type_t *const type = expression->base.type;
- type_t *const type_left = skip_typeref(expr_left->base.type);
- type_t *const type_right = skip_typeref(expr_right->base.type);
- if (is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
- ir_mode *const mode = get_ir_mode(type);
+ switch (kind) {
+ case EXPR_BINARY_ADD_ASSIGN:
+ case EXPR_BINARY_ADD:
+ return new_d_Add(dbgi, left, right, mode);
+ case EXPR_BINARY_SUB_ASSIGN:
+ case EXPR_BINARY_SUB:
return new_d_Sub(dbgi, left, right, mode);
- } else if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
- const pointer_type_t *const ptr_type = &type_left->pointer;
-
- ir_node *const elem_size = get_type_size(ptr_type->points_to);
- ir_mode *const mode = get_ir_mode(type);
- ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
- ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
- ir_node *const no_mem = new_NoMem();
- ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size, mode,
- op_pin_state_floats);
- return new_d_Proj(dbgi, div, mode, pn_Div_res);
- }
-
- assert(is_type_pointer(type_left));
- return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub);
-}
-
-static ir_node *create_shift(const binary_expression_t *expression)
-{
- dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
- ir_node *left = expression_to_firm(expression->left);
- ir_node *right = expression_to_firm(expression->right);
- type_t *type = expression->base.type;
- ir_mode *mode = get_ir_mode(type);
-
- /* firm always wants the shift count to be unsigned */
- right = create_conv(dbgi, right, mode_uint);
-
- ir_node *res;
-
- switch(expression->base.kind) {
- case EXPR_BINARY_SHIFTLEFT_ASSIGN:
+ case EXPR_BINARY_MUL_ASSIGN:
+ case EXPR_BINARY_MUL:
+ return new_d_Mul(dbgi, left, right, mode);
+ case EXPR_BINARY_BITWISE_AND:
+ case EXPR_BINARY_BITWISE_AND_ASSIGN:
+ return new_d_And(dbgi, left, right, mode);
+ case EXPR_BINARY_BITWISE_OR:
+ case EXPR_BINARY_BITWISE_OR_ASSIGN:
+ return new_d_Or(dbgi, left, right, mode);
+ case EXPR_BINARY_BITWISE_XOR:
+ case EXPR_BINARY_BITWISE_XOR_ASSIGN:
+ return new_d_Eor(dbgi, left, right, mode);
case EXPR_BINARY_SHIFTLEFT:
- res = new_d_Shl(dbgi, left, right, mode);
- break;
+ case EXPR_BINARY_SHIFTLEFT_ASSIGN:
+ return new_d_Shl(dbgi, left, right, mode);
+ case EXPR_BINARY_SHIFTRIGHT:
case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
- case EXPR_BINARY_SHIFTRIGHT: {
- expression_t *expr_left = expression->left;
- type_t *type_left = skip_typeref(expr_left->base.type);
-
- if(is_type_signed(type_left)) {
- res = new_d_Shrs(dbgi, left, right, mode);
- } else {
- res = new_d_Shr(dbgi, left, right, mode);
- }
- break;
+ if (mode_is_signed(mode)) {
+ return new_d_Shrs(dbgi, left, right, mode);
+ } else {
+ return new_d_Shr(dbgi, left, right, mode);
+ }
+ case EXPR_BINARY_DIV:
+ case EXPR_BINARY_DIV_ASSIGN: {
+ ir_node *pin = new_Pin(new_NoMem());
+ ir_node *op = new_d_Div(dbgi, pin, left, right, mode,
+ op_pin_state_floats);
+ ir_node *res = new_d_Proj(dbgi, op, mode, pn_Div_res);
+ return res;
+ }
+ case EXPR_BINARY_MOD:
+ case EXPR_BINARY_MOD_ASSIGN: {
+ ir_node *pin = new_Pin(new_NoMem());
+ assert(!mode_is_float(mode));
+ ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
+ op_pin_state_floats);
+ ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
+ return res;
}
default:
- panic("create shift op called for non-shift op");
+ panic("unexpected expression kind");
}
-
- return res;
}
-
-static ir_node *create_divmod(const binary_expression_t *expression)
+static ir_node *create_lazy_op(const binary_expression_t *expression)
{
- dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
- ir_node *left = expression_to_firm(expression->left);
- ir_node *right = expression_to_firm(expression->right);
- ir_node *pin = new_Pin(new_NoMem());
- /* be careful with the modes, because in arithmetic assign nodes only
- * the right operand has the mode of the arithmetic already */
- type_t *type = expression->right->base.type;
- ir_mode *mode = get_ir_mode(type);
- left = create_conv(dbgi, left, mode);
- ir_node *op;
- ir_node *res;
+ dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
+ type_t *type = skip_typeref(expression->base.type);
+ ir_mode *mode = get_ir_mode_arithmetic(type);
- switch (expression->base.kind) {
- case EXPR_BINARY_DIV:
- case EXPR_BINARY_DIV_ASSIGN:
- if(mode_is_float(mode)) {
- op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
- res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
+ if (is_constant_expression(expression->left) == EXPR_CLASS_CONSTANT) {
+ bool val = fold_constant_to_bool(expression->left);
+ expression_kind_t ekind = expression->base.kind;
+ assert(ekind == EXPR_BINARY_LOGICAL_AND || ekind == EXPR_BINARY_LOGICAL_OR);
+ if (ekind == EXPR_BINARY_LOGICAL_AND) {
+ if (!val) {
+ return new_Const(get_mode_null(mode));
+ }
} else {
- op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
- res = new_d_Proj(dbgi, op, mode, pn_Div_res);
+ if (val) {
+ return new_Const(get_mode_one(mode));
+ }
}
- break;
- case EXPR_BINARY_MOD:
- case EXPR_BINARY_MOD_ASSIGN:
- assert(!mode_is_float(mode));
- op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
- res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
- break;
+ if (is_constant_expression(expression->right) == EXPR_CLASS_CONSTANT) {
+ bool valr = fold_constant_to_bool(expression->right);
+ return create_Const_from_bool(mode, valr);
+ }
- default: panic("unexpected binary expression type in create_divmod()");
+ return produce_condition_result(expression->right, mode, dbgi);
}
- return res;
+ return produce_condition_result((const expression_t*) expression, mode,
+ dbgi);
}
-static ir_node *create_arithmetic_assign_divmod(
- const binary_expression_t *expression)
-{
- ir_node * value = create_divmod(expression);
- dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
- type_t *const type = expression->base.type;
- ir_mode *const mode = get_ir_mode(type);
-
- assert(type->kind != TYPE_POINTER);
-
- value = create_conv(dbgi, value, mode);
- set_value_for_expression(expression->left, value);
-
- return value;
-}
+typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
+ ir_node *right, ir_mode *mode);
-static ir_node *create_arithmetic_assign_shift(
- const binary_expression_t *expression)
+static ir_node *create_assign_binop(const binary_expression_t *expression)
{
- ir_node * value = create_shift(expression);
- dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
- type_t *const type = expression->base.type;
- ir_mode *const mode = get_ir_mode(type);
+ dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
+ const expression_t *left_expr = expression->left;
+ type_t *type = skip_typeref(left_expr->base.type);
+ ir_node *right = expression_to_firm(expression->right);
+ ir_node *left_addr = expression_to_addr(left_expr);
+ ir_node *left = get_value_from_lvalue(left_expr, left_addr);
+ ir_node *result = create_op(dbgi, expression, left, right);
- value = create_conv(dbgi, value, mode);
- set_value_for_expression(expression->left, value);
+ result = create_cast(dbgi, result, expression->right->base.type, type);
+ result = do_strict_conv(dbgi, result);
- return value;
+ result = set_value_for_expression_addr(left_expr, result, left_addr);
+
+ if (!is_type_compound(type)) {
+ ir_mode *mode_arithmetic = get_ir_mode_arithmetic(type);
+ result = create_conv(dbgi, result, mode_arithmetic);
+ }
+ return result;
}
static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
case EXPR_BINARY_ISLESSEQUAL:
case EXPR_BINARY_ISLESSGREATER:
case EXPR_BINARY_ISUNORDERED: {
- dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
- ir_node *left = expression_to_firm(expression->left);
- ir_node *right = expression_to_firm(expression->right);
- ir_node *cmp = new_d_Cmp(dbgi, left, right);
- long pnc = get_pnc(kind, expression->left->base.type);
- ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
- return proj;
+ dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
+ ir_node *left = expression_to_firm(expression->left);
+ ir_node *right = expression_to_firm(expression->right);
+ ir_relation relation = get_relation(kind);
+ ir_node *cmp = new_d_Cmp(dbgi, left, right, relation);
+ return cmp;
}
case EXPR_BINARY_ASSIGN: {
+ ir_node *addr = expression_to_addr(expression->left);
ir_node *right = expression_to_firm(expression->right);
- set_value_for_expression(expression->left, right);
+ ir_node *res
+ = set_value_for_expression_addr(expression->left, right, addr);
- return right;
+ type_t *type = skip_typeref(expression->base.type);
+ if (!is_type_compound(type)) {
+ ir_mode *mode_arithmetic = get_ir_mode_arithmetic(type);
+ res = create_conv(NULL, res, mode_arithmetic);
+ }
+ return res;
}
case EXPR_BINARY_ADD:
- return create_add(expression);
case EXPR_BINARY_SUB:
- return create_sub(expression);
case EXPR_BINARY_MUL:
- return create_arithmetic_binop(expression, new_d_Mul);
+ case EXPR_BINARY_DIV:
+ case EXPR_BINARY_MOD:
case EXPR_BINARY_BITWISE_AND:
- return create_arithmetic_binop(expression, new_d_And);
case EXPR_BINARY_BITWISE_OR:
- return create_arithmetic_binop(expression, new_d_Or);
case EXPR_BINARY_BITWISE_XOR:
- return create_arithmetic_binop(expression, new_d_Eor);
case EXPR_BINARY_SHIFTLEFT:
case EXPR_BINARY_SHIFTRIGHT:
- return create_shift(expression);
- case EXPR_BINARY_DIV:
- case EXPR_BINARY_MOD:
- return create_divmod(expression);
+ {
+ dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
+ ir_node *left = expression_to_firm(expression->left);
+ ir_node *right = expression_to_firm(expression->right);
+ return create_op(dbgi, expression, left, right);
+ }
case EXPR_BINARY_LOGICAL_AND:
case EXPR_BINARY_LOGICAL_OR:
return create_lazy_op(expression);
case EXPR_BINARY_COMMA:
- expression_to_firm(expression->left);
- return expression_to_firm(expression->right);
+ /* create side effects of left side */
+ (void) expression_to_firm(expression->left);
+ return _expression_to_firm(expression->right);
+
case EXPR_BINARY_ADD_ASSIGN:
- return create_arithmetic_assign_binop(expression, new_d_Add);
case EXPR_BINARY_SUB_ASSIGN:
- return create_arithmetic_assign_binop(expression, new_d_Sub);
case EXPR_BINARY_MUL_ASSIGN:
- return create_arithmetic_assign_binop(expression, new_d_Mul);
case EXPR_BINARY_MOD_ASSIGN:
case EXPR_BINARY_DIV_ASSIGN:
- return create_arithmetic_assign_divmod(expression);
case EXPR_BINARY_BITWISE_AND_ASSIGN:
- return create_arithmetic_assign_binop(expression, new_d_And);
case EXPR_BINARY_BITWISE_OR_ASSIGN:
- return create_arithmetic_assign_binop(expression, new_d_Or);
case EXPR_BINARY_BITWISE_XOR_ASSIGN:
- return create_arithmetic_assign_binop(expression, new_d_Eor);
case EXPR_BINARY_SHIFTLEFT_ASSIGN:
case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
- return create_arithmetic_assign_shift(expression);
- case EXPR_BINARY_BUILTIN_EXPECT:
- return expression_to_firm(expression->left);
+ return create_assign_binop(expression);
default:
panic("TODO binexpr type");
}
static ir_node *array_access_addr(const array_access_expression_t *expression)
{
- dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
- ir_node *base_addr = expression_to_firm(expression->array_ref);
- ir_node *offset = expression_to_firm(expression->index);
- offset = create_conv(dbgi, offset, mode_uint);
-
- type_t *ref_type = skip_typeref(expression->array_ref->base.type);
- assert(is_type_pointer(ref_type));
- pointer_type_t *pointer_type = &ref_type->pointer;
-
- ir_node *elem_size_const = get_type_size(pointer_type->points_to);
- ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
- mode_uint);
- ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
+ dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
+ ir_node *base_addr = expression_to_firm(expression->array_ref);
+ ir_node *offset = expression_to_firm(expression->index);
+ type_t *ref_type = skip_typeref(expression->array_ref->base.type);
+ ir_node *real_offset = adjust_for_pointer_arithmetic(dbgi, offset, ref_type);
+ ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
return result;
}
(const expression_t*) expression);
type = skip_typeref(type);
- return deref_address(type, addr, dbgi);
+ return deref_address(dbgi, type, addr);
}
static long get_offsetof_offset(const offsetof_expression_t *expression)
long offset = 0;
designator_t *designator = expression->designator;
- for( ; designator != NULL; designator = designator->next) {
+ for ( ; designator != NULL; designator = designator->next) {
type_t *type = skip_typeref(orig_type);
/* be sure the type is constructed */
(void) get_ir_type(type);
- if(designator->symbol != NULL) {
+ if (designator->symbol != NULL) {
assert(is_type_compound(type));
symbol_t *symbol = designator->symbol;
- declaration_t *declaration = type->compound.declaration;
- declaration_t *iter = declaration->scope.declarations;
- for( ; iter != NULL; iter = iter->next) {
- if(iter->symbol == symbol) {
+ compound_t *compound = type->compound.compound;
+ entity_t *iter = compound->members.entities;
+ for ( ; iter != NULL; iter = iter->base.next) {
+ if (iter->base.symbol == symbol) {
break;
}
}
assert(iter != NULL);
- assert(iter->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
- offset += get_entity_offset(iter->v.entity);
+ assert(iter->kind == ENTITY_COMPOUND_MEMBER);
+ assert(iter->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
+ offset += get_entity_offset(iter->compound_member.entity);
- orig_type = iter->type;
+ orig_type = iter->declaration.type;
} else {
expression_t *array_index = designator->array_index;
assert(designator->array_index != NULL);
assert(is_type_array(type));
- assert(is_type_valid(array_index->base.type));
- long index = fold_constant(array_index);
+ long index = fold_constant_to_int(array_index);
ir_type *arr_type = get_ir_type(type);
ir_type *elem_type = get_array_element_type(arr_type);
long elem_size = get_type_size_bytes(elem_type);
static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
{
- ir_mode *mode = get_ir_mode(expression->base.type);
- long offset = get_offsetof_offset(expression);
- tarval *tv = new_tarval_from_long(offset, mode);
- dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
+ ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
+ long offset = get_offsetof_offset(expression);
+ ir_tarval *tv = new_tarval_from_long(offset, mode);
+ dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
- return new_d_Const(dbgi, mode, tv);
+ return new_d_Const(dbgi, tv);
}
static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
ir_entity *entity, type_t *type);
+static ir_initializer_t *create_ir_initializer(
+ const initializer_t *initializer, type_t *type);
-static ir_node *compound_literal_to_firm(
- const compound_literal_expression_t *expression)
+static ir_entity *create_initializer_entity(dbg_info *dbgi,
+ initializer_t *initializer,
+ type_t *type)
{
- type_t *type = expression->type;
+ /* create the ir_initializer */
+ ir_graph *const old_current_ir_graph = current_ir_graph;
+ current_ir_graph = get_const_code_irg();
- /* create an entity on the stack */
- ir_type *frame_type = get_irg_frame_type(current_ir_graph);
+ ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
- ident *const id = unique_ident("CompLit");
- ir_type *const irtype = get_ir_type(type);
- dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
- ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
- set_entity_ld_ident(entity, id);
+ assert(current_ir_graph == get_const_code_irg());
+ current_ir_graph = old_current_ir_graph;
- set_entity_variability(entity, variability_uninitialized);
+ ident *const id = id_unique("initializer.%u");
+ ir_type *const irtype = get_ir_type(type);
+ ir_type *const global_type = get_glob_type();
+ ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
+ set_entity_ld_ident(entity, id);
+ set_entity_visibility(entity, ir_visibility_private);
+ add_entity_linkage(entity, IR_LINKAGE_CONSTANT);
+ set_entity_initializer(entity, irinitializer);
+ return entity;
+}
- /* create initialisation code */
+static ir_node *compound_literal_addr(compound_literal_expression_t const *const expression)
+{
+ dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
+ type_t *type = expression->type;
initializer_t *initializer = expression->initializer;
- create_local_initializer(initializer, dbgi, entity, type);
- /* create a sel for the compound literal address */
- ir_node *frame = get_local_frame(entity);
- ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
- return sel;
+ if (is_constant_initializer(initializer) == EXPR_CLASS_CONSTANT) {
+ ir_entity *entity = create_initializer_entity(dbgi, initializer, type);
+ return create_symconst(dbgi, entity);
+ } else {
+ /* create an entity on the stack */
+ ident *const id = id_unique("CompLit.%u");
+ ir_type *const irtype = get_ir_type(type);
+ ir_type *frame_type = get_irg_frame_type(current_ir_graph);
+
+ ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
+ set_entity_ld_ident(entity, id);
+
+ /* create initialisation code */
+ create_local_initializer(initializer, dbgi, entity, type);
+
+ /* create a sel for the compound literal address */
+ ir_node *frame = get_irg_frame(current_ir_graph);
+ ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
+ return sel;
+ }
+}
+
+static ir_node *compound_literal_to_firm(compound_literal_expression_t const* const expr)
+{
+ dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
+ type_t *const type = expr->type;
+ ir_node *const addr = compound_literal_addr(expr);
+ return deref_address(dbgi, type, addr);
}
/**
*/
static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
{
- type_t *type = expression->type;
- if(type == NULL) {
- type = expression->tp_expression->base.type;
- assert(type != NULL);
- }
-
- type = skip_typeref(type);
- /* ยง 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */
- if(is_type_array(type) && type->array.is_vla
+ type_t *const type = skip_typeref(expression->type);
+ /* ยง6.5.3.4:2 if the type is a VLA, evaluate the expression. */
+ if (is_type_array(type) && type->array.is_vla
&& expression->tp_expression != NULL) {
expression_to_firm(expression->tp_expression);
}
- return get_type_size(type);
+ return get_type_size_node(type);
+}
+
+static entity_t *get_expression_entity(const expression_t *expression)
+{
+ if (expression->kind != EXPR_REFERENCE)
+ return NULL;
+
+ return expression->reference.entity;
+}
+
+static unsigned get_cparser_entity_alignment(const entity_t *entity)
+{
+ switch(entity->kind) {
+ case DECLARATION_KIND_CASES:
+ return entity->declaration.alignment;
+ case ENTITY_STRUCT:
+ case ENTITY_UNION:
+ return entity->compound.alignment;
+ case ENTITY_TYPEDEF:
+ return entity->typedefe.alignment;
+ default:
+ break;
+ }
+ return 0;
}
/**
*/
static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
{
- type_t *type = expression->type;
- if(type == NULL) {
- /* beware: if expression is a variable reference, return the
- alignment of the variable. */
- const expression_t *tp_expression = expression->tp_expression;
- const declaration_t *declaration = expr_is_variable(tp_expression);
- if (declaration != NULL) {
- /* TODO: get the alignment of this variable. */
+ unsigned alignment = 0;
+
+ const expression_t *tp_expression = expression->tp_expression;
+ if (tp_expression != NULL) {
+ entity_t *entity = get_expression_entity(tp_expression);
+ if (entity != NULL) {
+ if (entity->kind == ENTITY_FUNCTION) {
+ /* a gnu-extension */
+ alignment = 1;
+ } else {
+ alignment = get_cparser_entity_alignment(entity);
+ }
}
- type = tp_expression->base.type;
- assert(type != NULL);
}
- ir_mode *const mode = get_ir_mode(expression->base.type);
- symconst_symbol sym;
- sym.type_p = get_ir_type(type);
- return new_SymConst(mode, sym, symconst_type_align);
+ if (alignment == 0) {
+ type_t *type = expression->type;
+ alignment = get_type_alignment(type);
+ }
+
+ dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
+ ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
+ ir_tarval *tv = new_tarval_from_long(alignment, mode);
+ return new_d_Const(dbgi, tv);
}
static void init_ir_types(void);
-long fold_constant(const expression_t *expression)
+
+static ir_tarval *fold_constant_to_tarval(const expression_t *expression)
{
- init_ir_types();
+ assert(is_constant_expression(expression) == EXPR_CLASS_CONSTANT);
- assert(is_constant_expression(expression));
+ bool constant_folding_old = constant_folding;
+ constant_folding = true;
+ int old_optimize = get_optimize();
+ int old_constant_folding = get_opt_constant_folding();
+ set_optimize(1);
+ set_opt_constant_folding(1);
+
+ init_ir_types();
ir_graph *old_current_ir_graph = current_ir_graph;
- if(current_ir_graph == NULL) {
- current_ir_graph = get_const_code_irg();
- }
+ current_ir_graph = get_const_code_irg();
ir_node *cnst = expression_to_firm(expression);
current_ir_graph = old_current_ir_graph;
+ set_optimize(old_optimize);
+ set_opt_constant_folding(old_constant_folding);
- if(!is_Const(cnst)) {
- panic("couldn't fold constant\n");
+ if (!is_Const(cnst)) {
+ panic("couldn't fold constant");
}
- tarval *tv = get_Const_tarval(cnst);
- if(!tarval_is_long(tv)) {
- panic("result of constant folding is not integer\n");
+ constant_folding = constant_folding_old;
+
+ return get_Const_tarval(cnst);
+}
+
+/* this function is only used in parser.c, but it relies on libfirm functionality */
+bool constant_is_negative(const expression_t *expression)
+{
+ ir_tarval *tv = fold_constant_to_tarval(expression);
+ return tarval_is_negative(tv);
+}
+
+long fold_constant_to_int(const expression_t *expression)
+{
+ ir_tarval *tv = fold_constant_to_tarval(expression);
+ if (!tarval_is_long(tv)) {
+ panic("result of constant folding is not integer");
}
return get_tarval_long(tv);
}
+bool fold_constant_to_bool(const expression_t *expression)
+{
+ ir_tarval *tv = fold_constant_to_tarval(expression);
+ return !tarval_is_null(tv);
+}
+
static ir_node *conditional_to_firm(const conditional_expression_t *expression)
{
dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
/* first try to fold a constant condition */
- if(is_constant_expression(expression->condition)) {
- long val = fold_constant(expression->condition);
- if(val) {
- return expression_to_firm(expression->true_expression);
+ if (is_constant_expression(expression->condition) == EXPR_CLASS_CONSTANT) {
+ bool val = fold_constant_to_bool(expression->condition);
+ if (val) {
+ expression_t *true_expression = expression->true_expression;
+ if (true_expression == NULL)
+ true_expression = expression->condition;
+ return expression_to_firm(true_expression);
} else {
return expression_to_firm(expression->false_expression);
}
}
- ir_node *cur_block = get_cur_block();
-
- /* create the true block */
- ir_node *true_block = new_immBlock();
-
- ir_node *true_val = expression_to_firm(expression->true_expression);
- ir_node *true_jmp = new_Jmp();
-
- /* create the false block */
- ir_node *false_block = new_immBlock();
-
- ir_node *false_val = expression_to_firm(expression->false_expression);
- ir_node *false_jmp = new_Jmp();
-
- /* create the condition evaluation */
- set_cur_block(cur_block);
- create_condition_evaluation(expression->condition, true_block, false_block);
+ ir_node *const true_block = new_immBlock();
+ ir_node *const false_block = new_immBlock();
+ ir_node *const cond_expr = create_condition_evaluation(expression->condition, true_block, false_block);
mature_immBlock(true_block);
mature_immBlock(false_block);
+ set_cur_block(true_block);
+ ir_node *true_val;
+ if (expression->true_expression != NULL) {
+ true_val = expression_to_firm(expression->true_expression);
+ } else if (cond_expr != NULL && get_irn_mode(cond_expr) != mode_b) {
+ true_val = cond_expr;
+ } else {
+ /* Condition ended with a short circuit (&&, ||, !) operation or a
+ * comparison. Generate a "1" as value for the true branch. */
+ true_val = new_Const(get_mode_one(mode_Is));
+ }
+ ir_node *const true_jmp = new_d_Jmp(dbgi);
+
+ set_cur_block(false_block);
+ ir_node *const false_val = expression_to_firm(expression->false_expression);
+ ir_node *const false_jmp = new_d_Jmp(dbgi);
+
/* create the common block */
- ir_node *common_block = new_immBlock();
- add_immBlock_pred(common_block, true_jmp);
- add_immBlock_pred(common_block, false_jmp);
- mature_immBlock(common_block);
+ ir_node *const in_cf[2] = { true_jmp, false_jmp };
+ ir_node *const block = new_Block(lengthof(in_cf), in_cf);
+ set_cur_block(block);
/* TODO improve static semantics, so either both or no values are NULL */
if (true_val == NULL || false_val == NULL)
return NULL;
- ir_node *in[2] = { true_val, false_val };
- ir_mode *mode = get_irn_mode(true_val);
- assert(get_irn_mode(false_val) == mode);
- ir_node *val = new_d_Phi(dbgi, 2, in, mode);
+ ir_node *const in[2] = { true_val, false_val };
+ type_t *const type = skip_typeref(expression->base.type);
+ ir_mode *const mode = get_ir_mode_arithmetic(type);
+ ir_node *const val = new_d_Phi(dbgi, lengthof(in), in, mode);
return val;
}
+/**
+ * Returns an IR-node representing the address of a field.
+ */
static ir_node *select_addr(const select_expression_t *expression)
{
dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
- ir_node *compound_addr = expression_to_firm(expression->compound);
-
- declaration_t *entry = expression->compound_entry;
- assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
- ir_entity *entity = entry->v.entity;
+ construct_select_compound(expression);
- assert(entity != NULL);
+ ir_node *compound_addr = expression_to_firm(expression->compound);
- ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
+ entity_t *entry = expression->compound_entry;
+ assert(entry->kind == ENTITY_COMPOUND_MEMBER);
+ assert(entry->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
- return sel;
+ if (constant_folding) {
+ ir_mode *mode = get_irn_mode(compound_addr);
+ ir_mode *mode_uint = get_reference_mode_unsigned_eq(mode);
+ ir_node *ofs = new_Const_long(mode_uint, entry->compound_member.offset);
+ return new_d_Add(dbgi, compound_addr, ofs, mode);
+ } else {
+ ir_entity *irentity = entry->compound_member.entity;
+ assert(irentity != NULL);
+ return new_d_simpleSel(dbgi, new_NoMem(), compound_addr, irentity);
+ }
}
static ir_node *select_to_firm(const select_expression_t *expression)
{
- dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
- ir_node *addr = select_addr(expression);
- type_t *type = revert_automatic_type_conversion(
+ dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
+ ir_node *addr = select_addr(expression);
+ type_t *type = revert_automatic_type_conversion(
(const expression_t*) expression);
- type = skip_typeref(type);
+ type = skip_typeref(type);
+
+ entity_t *entry = expression->compound_entry;
+ assert(entry->kind == ENTITY_COMPOUND_MEMBER);
+
+ if (entry->compound_member.bitfield) {
+ return bitfield_extract_to_firm(expression, addr);
+ }
- return deref_address(type, addr, dbgi);
+ return deref_address(dbgi, type, addr);
}
/* Values returned by __builtin_classify_type. */
static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
{
- const type_t *const type = skip_typeref(expr->type_expression->base.type);
+ type_t *type = expr->type_expression->base.type;
+ /* FIXME gcc returns different values depending on whether compiling C or C++
+ * e.g. int x[10] is pointer_type_class in C, but array_type_class in C++ */
gcc_type_class tc;
- switch (type->kind)
- {
- case TYPE_ATOMIC: {
- const atomic_type_t *const atomic_type = &type->atomic;
- switch ((atomic_type_kind_t) atomic_type->akind) {
- /* should not be reached */
- case ATOMIC_TYPE_INVALID:
- tc = no_type_class;
- goto make_const;
-
- /* gcc cannot do that */
- case ATOMIC_TYPE_VOID:
- tc = void_type_class;
- goto make_const;
-
- case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
- case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
- case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
- case ATOMIC_TYPE_SHORT:
- case ATOMIC_TYPE_USHORT:
- case ATOMIC_TYPE_INT:
- case ATOMIC_TYPE_UINT:
- case ATOMIC_TYPE_LONG:
- case ATOMIC_TYPE_ULONG:
- case ATOMIC_TYPE_LONGLONG:
- case ATOMIC_TYPE_ULONGLONG:
- case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
- tc = integer_type_class;
- goto make_const;
-
- case ATOMIC_TYPE_FLOAT:
- case ATOMIC_TYPE_DOUBLE:
- case ATOMIC_TYPE_LONG_DOUBLE:
- tc = real_type_class;
- goto make_const;
-
- case ATOMIC_TYPE_FLOAT_COMPLEX:
- case ATOMIC_TYPE_DOUBLE_COMPLEX:
- case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
- tc = complex_type_class;
- goto make_const;
- case ATOMIC_TYPE_FLOAT_IMAGINARY:
- case ATOMIC_TYPE_DOUBLE_IMAGINARY:
- case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
- tc = complex_type_class;
- goto make_const;
+ for (;;) {
+ type = skip_typeref(type);
+ switch (type->kind) {
+ case TYPE_ATOMIC: {
+ const atomic_type_t *const atomic_type = &type->atomic;
+ switch (atomic_type->akind) {
+ /* should not be reached */
+ case ATOMIC_TYPE_INVALID:
+ tc = no_type_class;
+ goto make_const;
+
+ /* gcc cannot do that */
+ case ATOMIC_TYPE_VOID:
+ tc = void_type_class;
+ goto make_const;
+
+ case ATOMIC_TYPE_WCHAR_T: /* gcc handles this as integer */
+ case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
+ case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
+ case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
+ case ATOMIC_TYPE_SHORT:
+ case ATOMIC_TYPE_USHORT:
+ case ATOMIC_TYPE_INT:
+ case ATOMIC_TYPE_UINT:
+ case ATOMIC_TYPE_LONG:
+ case ATOMIC_TYPE_ULONG:
+ case ATOMIC_TYPE_LONGLONG:
+ case ATOMIC_TYPE_ULONGLONG:
+ case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
+ tc = integer_type_class;
+ goto make_const;
+
+ case ATOMIC_TYPE_FLOAT:
+ case ATOMIC_TYPE_DOUBLE:
+ case ATOMIC_TYPE_LONG_DOUBLE:
+ tc = real_type_class;
+ goto make_const;
+ }
+ panic("Unexpected atomic type in classify_type_to_firm().");
}
- panic("Unexpected atomic type in classify_type_to_firm().");
- }
- case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
- case TYPE_ARRAY: /* gcc handles this as pointer */
- case TYPE_FUNCTION: /* gcc handles this as pointer */
- case TYPE_POINTER: tc = pointer_type_class; goto make_const;
- case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
- case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
-
- /* gcc handles this as integer */
- case TYPE_ENUM: tc = integer_type_class; goto make_const;
-
- case TYPE_BUILTIN:
- /* typedef/typeof should be skipped already */
- case TYPE_TYPEDEF:
- case TYPE_TYPEOF:
- case TYPE_INVALID:
- case TYPE_ERROR:
- break;
+ case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
+ case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
+ case TYPE_ARRAY: /* gcc handles this as pointer */
+ case TYPE_FUNCTION: /* gcc handles this as pointer */
+ case TYPE_POINTER: tc = pointer_type_class; goto make_const;
+ case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
+ case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
+
+ /* gcc handles this as integer */
+ case TYPE_ENUM: tc = integer_type_class; goto make_const;
+
+ /* gcc classifies the referenced type */
+ case TYPE_REFERENCE: type = type->reference.refers_to; continue;
+
+ /* typedef/typeof should be skipped already */
+ case TYPE_TYPEDEF:
+ case TYPE_TYPEOF:
+ case TYPE_ERROR:
+ break;
+ }
+ panic("unexpected TYPE classify_type_to_firm().");
}
- panic("unexpected TYPE classify_type_to_firm().");
-make_const: ;
- dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
- ir_mode *const mode = mode_int;
- tarval *const tv = new_tarval_from_long(tc, mode);
- return new_d_Const(dbgi, mode, tv);
+make_const:;
+ dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
+ ir_mode *const mode = atomic_modes[ATOMIC_TYPE_INT];
+ ir_tarval *const tv = new_tarval_from_long(tc, mode);
+ return new_d_Const(dbgi, tv);
}
static ir_node *function_name_to_firm(
case FUNCNAME_FUNCDNAME:
if (current_function_name == NULL) {
const source_position_t *const src_pos = &expr->base.source_position;
- const char *const name = current_function_decl->symbol->string;
+ const char *name = current_function_entity->base.symbol->string;
const string_t string = { name, strlen(name) + 1 };
- current_function_name = string_to_firm(src_pos, "__func__", &string);
+ current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
}
return current_function_name;
case FUNCNAME_FUNCSIG:
ir_entity *ent = get_irg_entity(current_ir_graph);
const char *const name = get_entity_ld_name(ent);
const string_t string = { name, strlen(name) + 1 };
- current_funcsig = string_to_firm(src_pos, "__FUNCSIG__", &string);
+ current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
}
return current_funcsig;
}
static ir_node *va_start_expression_to_firm(
const va_start_expression_t *const expr)
{
- ir_type *const method_type = get_ir_type(current_function_decl->type);
- int const n = get_method_n_params(method_type) - 1;
- ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
- ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
- dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
- ir_node *const no_mem = new_NoMem();
- ir_node *const arg_sel =
- new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
+ ir_entity *param_ent = current_vararg_entity;
+ if (param_ent == NULL) {
+ size_t const n = IR_VA_START_PARAMETER_NUMBER;
+ ir_type *const frame_type = get_irg_frame_type(current_ir_graph);
+ ir_type *const param_type = get_unknown_type();
+ param_ent = new_parameter_entity(frame_type, n, param_type);
+ current_vararg_entity = param_ent;
+ }
- ir_node *const cnst = get_type_size(expr->parameter->type);
- ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
- set_value_for_expression(expr->ap, add);
+ ir_node *const frame = get_irg_frame(current_ir_graph);
+ dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
+ ir_node *const no_mem = new_NoMem();
+ ir_node *const arg_sel = new_d_simpleSel(dbgi, no_mem, frame, param_ent);
+
+ set_value_for_expression(expr->ap, arg_sel);
return NULL;
}
static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
{
- type_t *const type = expr->base.type;
- ir_node *const ap = expression_to_firm(expr->ap);
- dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
- ir_node *const res = deref_address(type, ap, dbgi);
+ type_t *const type = expr->base.type;
+ expression_t *const ap_expr = expr->ap;
+ ir_node *const ap_addr = expression_to_addr(ap_expr);
+ ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
+ dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
+ ir_node *const res = deref_address(dbgi, type, ap);
+
+ ir_node *const cnst = get_type_size_node(expr->base.type);
+ ir_mode *const mode = get_irn_mode(cnst);
+ ir_node *const c1 = new_Const_long(mode, stack_param_align - 1);
+ ir_node *const c2 = new_d_Add(dbgi, cnst, c1, mode);
+ ir_node *const c3 = new_Const_long(mode, -(long)stack_param_align);
+ ir_node *const c4 = new_d_And(dbgi, c2, c3, mode);
+ ir_node *const add = new_d_Add(dbgi, ap, c4, mode_P_data);
- ir_node *const cnst = get_type_size(expr->base.type);
- ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
- set_value_for_expression(expr->ap, add);
+ set_value_for_expression_addr(ap_expr, add, ap_addr);
return res;
}
+/**
+ * Generate Firm for a va_copy expression.
+ */
+static ir_node *va_copy_expression_to_firm(const va_copy_expression_t *const expr)
+{
+ ir_node *const src = expression_to_firm(expr->src);
+ set_value_for_expression(expr->dst, src);
+ return NULL;
+}
+
static ir_node *dereference_addr(const unary_expression_t *const expression)
{
assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
return expression_to_firm(expression->value);
}
+/**
+ * Returns a IR-node representing an lvalue of the given expression.
+ */
static ir_node *expression_to_addr(const expression_t *expression)
{
switch(expression->kind) {
- case EXPR_REFERENCE:
- return reference_addr(&expression->reference);
case EXPR_ARRAY_ACCESS:
return array_access_addr(&expression->array_access);
- case EXPR_SELECT:
- return select_addr(&expression->select);
case EXPR_CALL:
return call_expression_to_firm(&expression->call);
- case EXPR_UNARY_DEREFERENCE: {
+ case EXPR_COMPOUND_LITERAL:
+ return compound_literal_addr(&expression->compound_literal);
+ case EXPR_REFERENCE:
+ return reference_addr(&expression->reference);
+ case EXPR_SELECT:
+ return select_addr(&expression->select);
+ case EXPR_UNARY_DEREFERENCE:
return dereference_addr(&expression->unary);
- }
default:
break;
}
static ir_node *builtin_constant_to_firm(
const builtin_constant_expression_t *expression)
{
- ir_mode *mode = get_ir_mode(expression->base.type);
- long v;
+ ir_mode *const mode = get_ir_mode_arithmetic(expression->base.type);
+ bool const v = is_constant_expression(expression->value) == EXPR_CLASS_CONSTANT;
+ return create_Const_from_bool(mode, v);
+}
- if (is_constant_expression(expression->value)) {
- v = 1;
- } else {
- v = 0;
- }
- return new_Const_long(mode, v);
+static ir_node *builtin_types_compatible_to_firm(
+ const builtin_types_compatible_expression_t *expression)
+{
+ type_t *const left = get_unqualified_type(skip_typeref(expression->left));
+ type_t *const right = get_unqualified_type(skip_typeref(expression->right));
+ bool const value = types_compatible(left, right);
+ ir_mode *const mode = get_ir_mode_arithmetic(expression->base.type);
+ return create_Const_from_bool(mode, value);
}
-static ir_node *builtin_prefetch_to_firm(
- const builtin_prefetch_expression_t *expression)
+static ir_node *get_label_block(label_t *label)
{
- ir_node *adr = expression_to_firm(expression->adr);
- /* no Firm support for prefetch yet */
- (void) adr;
- return NULL;
+ if (label->block != NULL)
+ return label->block;
+
+ /* beware: might be called from create initializer with current_ir_graph
+ * set to const_code_irg. */
+ ir_graph *rem = current_ir_graph;
+ current_ir_graph = current_function;
+
+ ir_node *block = new_immBlock();
+
+ label->block = block;
+
+ ARR_APP1(label_t *, all_labels, label);
+
+ current_ir_graph = rem;
+ return block;
}
-static ir_node *_expression_to_firm(const expression_t *expression)
+/**
+ * Pointer to a label. This is used for the
+ * GNU address-of-label extension.
+ */
+static ir_node *label_address_to_firm(const label_address_expression_t *label)
{
- switch(expression->kind) {
- case EXPR_CHARACTER_CONSTANT:
- return character_constant_to_firm(&expression->conste);
- case EXPR_WIDE_CHARACTER_CONSTANT:
- return wide_character_constant_to_firm(&expression->conste);
- case EXPR_CONST:
- return const_to_firm(&expression->conste);
- case EXPR_STRING_LITERAL:
- return string_literal_to_firm(&expression->string);
- case EXPR_WIDE_STRING_LITERAL:
- return wide_string_literal_to_firm(&expression->wide_string);
- case EXPR_REFERENCE:
- return reference_expression_to_firm(&expression->reference);
- case EXPR_CALL:
- return call_expression_to_firm(&expression->call);
- EXPR_UNARY_CASES
- return unary_expression_to_firm(&expression->unary);
- EXPR_BINARY_CASES
- return binary_expression_to_firm(&expression->binary);
- case EXPR_ARRAY_ACCESS:
- return array_access_to_firm(&expression->array_access);
- case EXPR_SIZEOF:
- return sizeof_to_firm(&expression->typeprop);
- case EXPR_ALIGNOF:
- return alignof_to_firm(&expression->typeprop);
- case EXPR_CONDITIONAL:
- return conditional_to_firm(&expression->conditional);
- case EXPR_SELECT:
- return select_to_firm(&expression->select);
- case EXPR_CLASSIFY_TYPE:
- return classify_type_to_firm(&expression->classify_type);
- case EXPR_FUNCNAME:
- return function_name_to_firm(&expression->funcname);
- case EXPR_STATEMENT:
- return statement_expression_to_firm(&expression->statement);
- case EXPR_VA_START:
- return va_start_expression_to_firm(&expression->va_starte);
- case EXPR_VA_ARG:
- return va_arg_expression_to_firm(&expression->va_arge);
- case EXPR_BUILTIN_SYMBOL:
- panic("unimplemented expression found");
- case EXPR_BUILTIN_CONSTANT_P:
- return builtin_constant_to_firm(&expression->builtin_constant);
- case EXPR_BUILTIN_PREFETCH:
- return builtin_prefetch_to_firm(&expression->builtin_prefetch);
- case EXPR_OFFSETOF:
- return offsetof_to_firm(&expression->offsetofe);
- case EXPR_COMPOUND_LITERAL:
- return compound_literal_to_firm(&expression->compound_literal);
+ dbg_info *dbgi = get_dbg_info(&label->base.source_position);
+ ir_node *block = get_label_block(label->label);
+ ir_entity *entity = create_Block_entity(block);
- case EXPR_UNKNOWN:
- case EXPR_INVALID:
- break;
+ symconst_symbol value;
+ value.entity_p = entity;
+ return new_d_SymConst(dbgi, mode_P_code, value, symconst_addr_ent);
+}
+
+/**
+ * creates firm nodes for an expression. The difference between this function
+ * and expression_to_firm is, that this version might produce mode_b nodes
+ * instead of mode_Is.
+ */
+static ir_node *_expression_to_firm(expression_t const *const expr)
+{
+#ifndef NDEBUG
+ if (!constant_folding) {
+ assert(!expr->base.transformed);
+ ((expression_t*)expr)->base.transformed = true;
+ }
+#endif
+
+ switch (expr->kind) {
+ case EXPR_ALIGNOF: return alignof_to_firm( &expr->typeprop);
+ case EXPR_ARRAY_ACCESS: return array_access_to_firm( &expr->array_access);
+ case EXPR_BINARY_CASES: return binary_expression_to_firm( &expr->binary);
+ case EXPR_BUILTIN_CONSTANT_P: return builtin_constant_to_firm( &expr->builtin_constant);
+ case EXPR_BUILTIN_TYPES_COMPATIBLE_P: return builtin_types_compatible_to_firm(&expr->builtin_types_compatible);
+ case EXPR_CALL: return call_expression_to_firm( &expr->call);
+ case EXPR_CLASSIFY_TYPE: return classify_type_to_firm( &expr->classify_type);
+ case EXPR_COMPOUND_LITERAL: return compound_literal_to_firm( &expr->compound_literal);
+ case EXPR_CONDITIONAL: return conditional_to_firm( &expr->conditional);
+ case EXPR_FUNCNAME: return function_name_to_firm( &expr->funcname);
+ case EXPR_LABEL_ADDRESS: return label_address_to_firm( &expr->label_address);
+ case EXPR_LITERAL_CASES: return literal_to_firm( &expr->literal);
+ case EXPR_OFFSETOF: return offsetof_to_firm( &expr->offsetofe);
+ case EXPR_REFERENCE: return reference_expression_to_firm( &expr->reference);
+ case EXPR_ENUM_CONSTANT: return enum_constant_to_firm( &expr->reference);
+ case EXPR_SELECT: return select_to_firm( &expr->select);
+ case EXPR_SIZEOF: return sizeof_to_firm( &expr->typeprop);
+ case EXPR_STATEMENT: return statement_expression_to_firm( &expr->statement);
+ case EXPR_UNARY_CASES: return unary_expression_to_firm( &expr->unary);
+ case EXPR_VA_ARG: return va_arg_expression_to_firm( &expr->va_arge);
+ case EXPR_VA_COPY: return va_copy_expression_to_firm( &expr->va_copye);
+ case EXPR_VA_START: return va_start_expression_to_firm( &expr->va_starte);
+ case EXPR_WIDE_STRING_LITERAL: return wide_string_literal_to_firm( &expr->string_literal);
+
+ case EXPR_STRING_LITERAL: return string_to_firm(&expr->base.source_position, "str.%u", &expr->literal.value);
+
+ case EXPR_ERROR: break;
}
panic("invalid expression found");
}
-static ir_node *expression_to_firm(const expression_t *expression)
+/**
+ * Check if a given expression is a GNU __builtin_expect() call.
+ */
+static bool is_builtin_expect(const expression_t *expression)
{
- ir_node *res = _expression_to_firm(expression);
+ if (expression->kind != EXPR_CALL)
+ return false;
- if(res != NULL && get_irn_mode(res) == mode_b) {
- ir_mode *mode = get_ir_mode(expression->base.type);
- if(is_Const(res)) {
- if(is_Const_null(res)) {
- return new_Const_long(mode, 0);
- } else {
- assert(is_Const_one(res));
- return new_Const_long(mode, 1);
- }
+ expression_t *function = expression->call.function;
+ if (function->kind != EXPR_REFERENCE)
+ return false;
+ reference_expression_t *ref = &function->reference;
+ if (ref->entity->kind != ENTITY_FUNCTION ||
+ ref->entity->function.btk != BUILTIN_EXPECT)
+ return false;
+
+ return true;
+}
+
+static bool produces_mode_b(const expression_t *expression)
+{
+ switch (expression->kind) {
+ case EXPR_BINARY_EQUAL:
+ case EXPR_BINARY_NOTEQUAL:
+ case EXPR_BINARY_LESS:
+ case EXPR_BINARY_LESSEQUAL:
+ case EXPR_BINARY_GREATER:
+ case EXPR_BINARY_GREATEREQUAL:
+ case EXPR_BINARY_ISGREATER:
+ case EXPR_BINARY_ISGREATEREQUAL:
+ case EXPR_BINARY_ISLESS:
+ case EXPR_BINARY_ISLESSEQUAL:
+ case EXPR_BINARY_ISLESSGREATER:
+ case EXPR_BINARY_ISUNORDERED:
+ case EXPR_UNARY_NOT:
+ return true;
+
+ case EXPR_CALL:
+ if (is_builtin_expect(expression)) {
+ expression_t *argument = expression->call.arguments->expression;
+ return produces_mode_b(argument);
}
+ return false;
+ case EXPR_BINARY_COMMA:
+ return produces_mode_b(expression->binary.right);
- dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
- return produce_condition_result(expression, dbgi);
+ default:
+ return false;
}
-
- return res;
}
-static ir_node *expression_to_modeb(const expression_t *expression)
+static ir_node *expression_to_firm(const expression_t *expression)
{
- ir_node *res = _expression_to_firm(expression);
- res = create_conv(NULL, res, mode_b);
+ if (!produces_mode_b(expression)) {
+ ir_node *res = _expression_to_firm(expression);
+ assert(res == NULL || get_irn_mode(res) != mode_b);
+ return res;
+ }
- return res;
+ if (is_constant_expression(expression) == EXPR_CLASS_CONSTANT) {
+ bool const constant_folding_old = constant_folding;
+ constant_folding = true;
+ ir_node *res = _expression_to_firm(expression);
+ constant_folding = constant_folding_old;
+ ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
+ assert(is_Const(res));
+ return create_Const_from_bool(mode, !is_Const_null(res));
+ }
+
+ /* we have to produce a 0/1 from the mode_b expression */
+ dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
+ ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
+ return produce_condition_result(expression, mode, dbgi);
}
/**
* create a short-circuit expression evaluation that tries to construct
* efficient control flow structures for &&, || and ! expressions
*/
-static void create_condition_evaluation(const expression_t *expression,
- ir_node *true_block,
- ir_node *false_block)
+static ir_node *create_condition_evaluation(const expression_t *expression,
+ ir_node *true_block,
+ ir_node *false_block)
{
switch(expression->kind) {
case EXPR_UNARY_NOT: {
const unary_expression_t *unary_expression = &expression->unary;
create_condition_evaluation(unary_expression->value, false_block,
true_block);
- return;
+ return NULL;
}
case EXPR_BINARY_LOGICAL_AND: {
const binary_expression_t *binary_expression = &expression->binary;
- ir_node *cur_block = get_cur_block();
ir_node *extra_block = new_immBlock();
- set_cur_block(cur_block);
create_condition_evaluation(binary_expression->left, extra_block,
false_block);
mature_immBlock(extra_block);
set_cur_block(extra_block);
create_condition_evaluation(binary_expression->right, true_block,
false_block);
- return;
+ return NULL;
}
case EXPR_BINARY_LOGICAL_OR: {
const binary_expression_t *binary_expression = &expression->binary;
- ir_node *cur_block = get_cur_block();
ir_node *extra_block = new_immBlock();
- set_cur_block(cur_block);
create_condition_evaluation(binary_expression->left, true_block,
extra_block);
mature_immBlock(extra_block);
set_cur_block(extra_block);
create_condition_evaluation(binary_expression->right, true_block,
false_block);
- return;
+ return NULL;
}
default:
break;
}
dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
- ir_node *condition = expression_to_modeb(expression);
+ ir_node *cond_expr = _expression_to_firm(expression);
+ ir_node *condition = create_conv(dbgi, cond_expr, mode_b);
ir_node *cond = new_d_Cond(dbgi, condition);
ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
/* set branch prediction info based on __builtin_expect */
- if(expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
- long cnst = fold_constant(expression->binary.right);
- cond_jmp_predicate pred;
-
- if(cnst == 0) {
- pred = COND_JMP_PRED_FALSE;
- } else {
- pred = COND_JMP_PRED_TRUE;
+ if (is_builtin_expect(expression) && is_Cond(cond)) {
+ call_argument_t *argument = expression->call.arguments->next;
+ if (is_constant_expression(argument->expression) == EXPR_CLASS_CONSTANT) {
+ bool const cnst = fold_constant_to_bool(argument->expression);
+ cond_jmp_predicate const pred = cnst ? COND_JMP_PRED_TRUE : COND_JMP_PRED_FALSE;
+ set_Cond_jmp_pred(cond, pred);
}
- set_Cond_jmp_pred(cond, pred);
}
add_immBlock_pred(true_block, true_proj);
add_immBlock_pred(false_block, false_proj);
- set_cur_block(NULL);
+ set_unreachable_now();
+ return cond_expr;
}
+static void create_variable_entity(entity_t *variable,
+ declaration_kind_t declaration_kind,
+ ir_type *parent_type)
+{
+ assert(variable->kind == ENTITY_VARIABLE);
+ type_t *type = skip_typeref(variable->declaration.type);
+ ident *const id = new_id_from_str(variable->base.symbol->string);
+ ir_type *const irtype = get_ir_type(type);
+ dbg_info *const dbgi = get_dbg_info(&variable->base.source_position);
+ ir_entity *const irentity = new_d_entity(parent_type, id, irtype, dbgi);
+ unsigned alignment = variable->declaration.alignment;
-static void create_declaration_entity(declaration_t *declaration,
- declaration_kind_t declaration_kind,
- ir_type *parent_type)
-{
- ident *const id = new_id_from_str(declaration->symbol->string);
- type_t *const type = skip_typeref(declaration->type);
- ir_type *const irtype = get_ir_type(type);
- dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
- ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
- set_entity_ld_ident(entity, id);
+ set_entity_alignment(irentity, alignment);
+
+ handle_decl_modifiers(irentity, variable);
- declaration->declaration_kind = (unsigned char) declaration_kind;
- declaration->v.entity = entity;
- set_entity_variability(entity, variability_uninitialized);
- if(parent_type == get_tls_type())
- set_entity_allocation(entity, allocation_automatic);
- else if(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
- set_entity_allocation(entity, allocation_static);
+ variable->declaration.kind = (unsigned char) declaration_kind;
+ variable->variable.v.entity = irentity;
+ set_entity_ld_ident(irentity, create_ld_ident(variable));
- if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
- set_entity_volatility(entity, volatility_is_volatile);
+ if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
+ set_entity_volatility(irentity, volatility_is_volatile);
}
}
type_t *type;
ir_initializer_t *initializer;
size_t index;
- declaration_t *compound_entry;
+ entity_t *compound_entry;
};
typedef struct type_path_t type_path_t;
{
size_t len = ARR_LEN(path->path);
- for(size_t i = 0; i < len; ++i) {
+ for (size_t i = 0; i < len; ++i) {
const type_path_entry_t *entry = & path->path[i];
type_t *type = skip_typeref(entry->type);
- if(is_type_compound(type)) {
- fprintf(stderr, ".%s", entry->compound_entry->symbol->string);
- } else if(is_type_array(type)) {
- fprintf(stderr, "[%zd]", entry->index);
+ if (is_type_compound(type)) {
+ fprintf(stderr, ".%s", entry->compound_entry->base.symbol->string);
+ } else if (is_type_array(type)) {
+ fprintf(stderr, "[%u]", (unsigned) entry->index);
} else {
fprintf(stderr, "-INVALID-");
}
return result;
}
-static size_t get_compound_size(const compound_type_t *type)
+static size_t get_compound_member_count(const compound_type_t *type)
{
- declaration_t *declaration = type->declaration;
- declaration_t *member = declaration->scope.declarations;
- size_t size = 0;
- for( ; member != NULL; member = member->next) {
- ++size;
+ compound_t *compound = type->compound;
+ size_t n_members = 0;
+ entity_t *member = compound->members.entities;
+ for ( ; member != NULL; member = member->base.next) {
+ ++n_members;
}
- /* TODO: cache results? */
- return size;
+ return n_members;
}
static ir_initializer_t *get_initializer_entry(type_path_t *path)
assert(is_type_compound(top_type) || is_type_array(top_type));
- if(ARR_LEN(path->path) == 0) {
+ if (ARR_LEN(path->path) == 0) {
return NULL;
} else {
type_path_entry_t *top = get_type_path_top(path);
size_t len;
- if(is_type_compound(top_type)) {
- declaration_t *declaration = top_type->compound.declaration;
- declaration_t *entry = declaration->scope.declarations;
+ if (is_type_compound(top_type)) {
+ compound_t *const compound = top_type->compound.compound;
+ entity_t *const entry = skip_unnamed_bitfields(compound->members.entities);
top->compound_entry = entry;
top->index = 0;
- len = get_compound_size(&top_type->compound);
- if(entry != NULL)
- path->top_type = entry->type;
+ len = get_compound_member_count(&top_type->compound);
+ if (entry != NULL) {
+ assert(entry->kind == ENTITY_COMPOUND_MEMBER);
+ path->top_type = entry->declaration.type;
+ }
} else {
assert(is_type_array(top_type));
assert(top_type->array.size > 0);
path->top_type = top_type->array.element_type;
len = top_type->array.size;
}
- if(initializer == NULL
+ if (initializer == NULL
|| get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
initializer = create_initializer_compound(len);
/* we have to set the entry at the 2nd latest path entry... */
size_t path_len = ARR_LEN(path->path);
assert(path_len >= 1);
- if(path_len > 1) {
+ if (path_len > 1) {
type_path_entry_t *entry = & path->path[path_len-2];
ir_initializer_t *tinitializer = entry->initializer;
set_initializer_compound_value(tinitializer, entry->index,
/* designators start at current object type */
ARR_RESIZE(type_path_entry_t, path->path, 1);
- for( ; designator != NULL; designator = designator->next) {
+ for ( ; designator != NULL; designator = designator->next) {
type_path_entry_t *top = get_type_path_top(path);
type_t *orig_type = top->type;
type_t *type = skip_typeref(orig_type);
- if(designator->symbol != NULL) {
+ if (designator->symbol != NULL) {
assert(is_type_compound(type));
size_t index = 0;
symbol_t *symbol = designator->symbol;
- declaration_t *declaration = type->compound.declaration;
- declaration_t *iter = declaration->scope.declarations;
- for( ; iter != NULL; iter = iter->next, ++index) {
- if(iter->symbol == symbol) {
+ compound_t *compound = type->compound.compound;
+ entity_t *iter = compound->members.entities;
+ for ( ; iter != NULL; iter = iter->base.next, ++index) {
+ if (iter->base.symbol == symbol) {
+ assert(iter->kind == ENTITY_COMPOUND_MEMBER);
break;
}
}
assert(iter != NULL);
+ /* revert previous initialisations of other union elements */
+ if (type->kind == TYPE_COMPOUND_UNION) {
+ ir_initializer_t *initializer = top->initializer;
+ if (initializer != NULL
+ && get_initializer_kind(initializer) == IR_INITIALIZER_COMPOUND) {
+ /* are we writing to a new element? */
+ ir_initializer_t *oldi
+ = get_initializer_compound_value(initializer, index);
+ if (get_initializer_kind(oldi) == IR_INITIALIZER_NULL) {
+ /* clear initializer */
+ size_t len
+ = get_initializer_compound_n_entries(initializer);
+ ir_initializer_t *nulli = get_initializer_null();
+ for (size_t i = 0; i < len; ++i) {
+ set_initializer_compound_value(initializer, i,
+ nulli);
+ }
+ }
+ }
+ }
+
top->type = orig_type;
top->compound_entry = iter;
top->index = index;
- orig_type = iter->type;
+ orig_type = iter->declaration.type;
} else {
expression_t *array_index = designator->array_index;
assert(designator->array_index != NULL);
assert(is_type_array(type));
- assert(is_type_valid(array_index->base.type));
- long index = fold_constant(array_index);
+ long index = fold_constant_to_int(array_index);
assert(index >= 0);
#ifndef NDEBUG
- if(type->array.size_constant == 1) {
+ if (type->array.size_constant) {
long array_size = type->array.size;
assert(index < array_size);
}
}
path->top_type = orig_type;
- if(designator->next != NULL) {
+ if (designator->next != NULL) {
descend_into_subtype(path);
}
}
static void advance_current_object(type_path_t *path)
{
- if(path->invalid) {
+ if (path->invalid) {
/* TODO: handle this... */
panic("invalid initializer in ast2firm (excessive elements)");
- return;
}
type_path_entry_t *top = get_type_path_top(path);
type_t *type = skip_typeref(top->type);
- if(is_type_union(type)) {
+ if (is_type_union(type)) {
+ /* only the first element is initialized in unions */
top->compound_entry = NULL;
- } else if(is_type_struct(type)) {
- declaration_t *entry = top->compound_entry;
+ } else if (is_type_struct(type)) {
+ entity_t *entry = top->compound_entry;
top->index++;
- entry = entry->next;
+ entry = skip_unnamed_bitfields(entry->base.next);
top->compound_entry = entry;
- if(entry != NULL) {
- path->top_type = entry->type;
+ if (entry != NULL) {
+ assert(entry->kind == ENTITY_COMPOUND_MEMBER);
+ path->top_type = entry->declaration.type;
return;
}
} else {
assert(is_type_array(type));
top->index++;
- if(!type->array.size_constant || top->index < type->array.size) {
+ if (!type->array.size_constant || top->index < type->array.size) {
return;
}
}
/* we're past the last member of the current sub-aggregate, try if we
* can ascend in the type hierarchy and continue with another subobject */
- size_t len = ARR_LEN(path->path);
+ size_t len = ARR_LEN(path->path);
- if(len > 1) {
+ if (len > 1) {
ascend_from_subtype(path);
advance_current_object(path);
} else {
}
-static ir_initializer_t *create_ir_initializer(
- const initializer_t *initializer, type_t *type);
-
static ir_initializer_t *create_ir_initializer_value(
const initializer_value_t *initializer)
{
- ir_node *value = expression_to_firm(initializer->value);
+ if (is_type_compound(initializer->value->base.type)) {
+ panic("initializer creation for compounds not implemented yet");
+ }
+ type_t *type = initializer->value->base.type;
+ expression_t *expr = initializer->value;
+ ir_node *value = expression_to_firm(expr);
+ ir_mode *mode = get_ir_mode_storage(type);
+ value = create_conv(NULL, value, mode);
return create_initializer_const(value);
}
+/** test wether type can be initialized by a string constant */
+static bool is_string_type(type_t *type)
+{
+ type_t *inner;
+ if (is_type_pointer(type)) {
+ inner = skip_typeref(type->pointer.points_to);
+ } else if(is_type_array(type)) {
+ inner = skip_typeref(type->array.element_type);
+ } else {
+ return false;
+ }
+
+ return is_type_integer(inner);
+}
+
static ir_initializer_t *create_ir_initializer_list(
const initializer_list_t *initializer, type_t *type)
{
descend_into_subtype(&path);
- for(size_t i = 0; i < initializer->len; ++i) {
+ for (size_t i = 0; i < initializer->len; ++i) {
const initializer_t *sub_initializer = initializer->initializers[i];
- if(sub_initializer->kind == INITIALIZER_DESIGNATOR) {
+ if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
walk_designator(&path, sub_initializer->designator.designator);
continue;
}
- if(sub_initializer->kind == INITIALIZER_VALUE) {
+ if (sub_initializer->kind == INITIALIZER_VALUE) {
/* we might have to descend into types until we're at a scalar
* type */
while(true) {
type_t *orig_top_type = path.top_type;
type_t *top_type = skip_typeref(orig_top_type);
- if(is_type_scalar(top_type))
+ if (is_type_scalar(top_type))
+ break;
+ descend_into_subtype(&path);
+ }
+ } else if (sub_initializer->kind == INITIALIZER_STRING
+ || sub_initializer->kind == INITIALIZER_WIDE_STRING) {
+ /* we might have to descend into types until we're at a scalar
+ * type */
+ while (true) {
+ type_t *orig_top_type = path.top_type;
+ type_t *top_type = skip_typeref(orig_top_type);
+
+ if (is_string_type(top_type))
break;
descend_into_subtype(&path);
}
type = skip_typeref(type);
size_t string_len = initializer->string.size;
- assert(type->kind == TYPE_ARRAY && type->array.size_constant);
+ assert(type->kind == TYPE_ARRAY);
+ assert(type->array.size_constant);
size_t len = type->array.size;
ir_initializer_t *irinitializer = create_initializer_compound(len);
const char *string = initializer->string.begin;
- ir_mode *mode = get_type_mode(ir_type_const_char);
+ ir_mode *mode = get_ir_mode_storage(type->array.element_type);
- for(size_t i = 0; i < len; ++i) {
+ for (size_t i = 0; i < len; ++i) {
char c = 0;
- if(i < string_len)
+ if (i < string_len)
c = string[i];
- tarval *tv = new_tarval_from_long(string[i], mode);
+ ir_tarval *tv = new_tarval_from_long(c, mode);
ir_initializer_t *char_initializer = create_initializer_tarval(tv);
set_initializer_compound_value(irinitializer, i, char_initializer);
static ir_initializer_t *create_ir_initializer_wide_string(
const initializer_wide_string_t *initializer, type_t *type)
{
- size_t string_len = initializer->string.size;
- assert(type->kind == TYPE_ARRAY && type->array.size_constant);
+ assert(type->kind == TYPE_ARRAY);
+ assert(type->array.size_constant);
size_t len = type->array.size;
+ size_t string_len = wstrlen(&initializer->string);
ir_initializer_t *irinitializer = create_initializer_compound(len);
- const wchar_rep_t *string = initializer->string.begin;
- ir_mode *mode = get_type_mode(ir_type_wchar_t);
+ const char *p = initializer->string.begin;
+ ir_mode *mode = get_type_mode(ir_type_wchar_t);
- for(size_t i = 0; i < len; ++i) {
- wchar_rep_t c = 0;
- if(i < string_len) {
- c = string[i];
+ for (size_t i = 0; i < len; ++i) {
+ utf32 c = 0;
+ if (i < string_len) {
+ c = read_utf8_char(&p);
}
- tarval *tv = new_tarval_from_long(string[i], mode);
+ ir_tarval *tv = new_tarval_from_long(c, mode);
ir_initializer_t *char_initializer = create_initializer_tarval(tv);
set_initializer_compound_value(irinitializer, i, char_initializer);
panic("unknown initializer");
}
-static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
- ir_type *type, dbg_info *dbgi, ir_node *base_addr)
+/** ANSI C ยง6.7.8:21: If there are fewer initializers [..] than there
+ * are elements [...] the remainder of the aggregate shall be initialized
+ * implicitly the same as objects that have static storage duration. */
+static void create_dynamic_null_initializer(ir_entity *entity, dbg_info *dbgi,
+ ir_node *base_addr)
{
- switch(get_initializer_kind(initializer)) {
- case IR_INITIALIZER_NULL: {
- /* TODO: implement this for compound types... */
- assert(type != NULL);
+ /* for unions we must NOT do anything for null initializers */
+ ir_type *owner = get_entity_owner(entity);
+ if (is_Union_type(owner)) {
+ return;
+ }
- ir_mode *mode = get_type_mode(type);
- tarval *zero = get_mode_null(mode);
- ir_node *cnst = new_d_Const(dbgi, mode, zero);
+ ir_type *ent_type = get_entity_type(entity);
+ /* create sub-initializers for a compound type */
+ if (is_compound_type(ent_type)) {
+ unsigned n_members = get_compound_n_members(ent_type);
+ for (unsigned n = 0; n < n_members; ++n) {
+ ir_entity *member = get_compound_member(ent_type, n);
+ ir_node *addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr,
+ member);
+ create_dynamic_null_initializer(member, dbgi, addr);
+ }
+ return;
+ }
+ if (is_Array_type(ent_type)) {
+ assert(has_array_upper_bound(ent_type, 0));
+ long n = get_array_upper_bound_int(ent_type, 0);
+ for (long i = 0; i < n; ++i) {
+ ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
+ ir_tarval *index_tv = new_tarval_from_long(i, mode_uint);
+ ir_node *cnst = new_d_Const(dbgi, index_tv);
+ ir_node *in[1] = { cnst };
+ ir_entity *arrent = get_array_element_entity(ent_type);
+ ir_node *addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in,
+ arrent);
+ create_dynamic_null_initializer(arrent, dbgi, addr);
+ }
+ return;
+ }
- /* TODO: bitfields */
- ir_node *mem = get_store();
- ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
- ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
- set_store(proj_m);
+ ir_mode *value_mode = get_type_mode(ent_type);
+ ir_node *node = new_Const(get_mode_null(value_mode));
+
+ /* is it a bitfield type? */
+ if (is_Primitive_type(ent_type) &&
+ get_primitive_base_type(ent_type) != NULL) {
+ bitfield_store_to_firm(dbgi, entity, base_addr, node, false, false);
return;
}
+
+ ir_node *mem = get_store();
+ ir_node *store = new_d_Store(dbgi, mem, base_addr, node, cons_none);
+ ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
+ set_store(proj_m);
+}
+
+static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
+ ir_entity *entity, ir_type *type, dbg_info *dbgi, ir_node *base_addr)
+{
+ switch(get_initializer_kind(initializer)) {
+ case IR_INITIALIZER_NULL:
+ create_dynamic_null_initializer(entity, dbgi, base_addr);
+ return;
case IR_INITIALIZER_CONST: {
- ir_node *node = get_initializer_const_value(initializer);
- ir_mode *mode = get_irn_mode(node);
- assert(get_type_mode(type) == mode);
+ ir_node *node = get_initializer_const_value(initializer);
+ ir_type *ent_type = get_entity_type(entity);
+
+ /* is it a bitfield type? */
+ if (is_Primitive_type(ent_type) &&
+ get_primitive_base_type(ent_type) != NULL) {
+ bitfield_store_to_firm(dbgi, entity, base_addr, node, false, false);
+ return;
+ }
- /* TODO: bitfields... */
+ assert(get_type_mode(type) == get_irn_mode(node));
ir_node *mem = get_store();
- ir_node *store = new_d_Store(dbgi, mem, base_addr, node);
+ ir_node *store = new_d_Store(dbgi, mem, base_addr, node, cons_none);
ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
set_store(proj_m);
return;
}
case IR_INITIALIZER_TARVAL: {
- tarval *tv = get_initializer_tarval_value(initializer);
- ir_mode *mode = get_tarval_mode(tv);
- ir_node *cnst = new_d_Const(dbgi, mode, tv);
- assert(get_type_mode(type) == mode);
+ ir_tarval *tv = get_initializer_tarval_value(initializer);
+ ir_node *cnst = new_d_Const(dbgi, tv);
+ ir_type *ent_type = get_entity_type(entity);
+
+ /* is it a bitfield type? */
+ if (is_Primitive_type(ent_type) &&
+ get_primitive_base_type(ent_type) != NULL) {
+ bitfield_store_to_firm(dbgi, entity, base_addr, cnst, false, false);
+ return;
+ }
- /* TODO: bitfields... */
+ assert(get_type_mode(type) == get_tarval_mode(tv));
ir_node *mem = get_store();
- ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
+ ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst, cons_none);
ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
set_store(proj_m);
return;
}
case IR_INITIALIZER_COMPOUND: {
- assert(is_compound_type(type));
+ assert(is_compound_type(type) || is_Array_type(type));
int n_members;
- if(is_Array_type(type)) {
+ if (is_Array_type(type)) {
assert(has_array_upper_bound(type, 0));
n_members = get_array_upper_bound_int(type, 0);
} else {
n_members = get_compound_n_members(type);
}
- if(get_initializer_compound_n_entries(initializer)
+ if (get_initializer_compound_n_entries(initializer)
!= (unsigned) n_members)
panic("initializer doesn't match compound type");
- for(int i = 0; i < n_members; ++i) {
- ir_node *addr;
- ir_type *irtype;
- if(is_Array_type(type)) {
- ir_entity *entity = get_array_element_entity(type);
- tarval *index_tv = new_tarval_from_long(i, mode_uint);
- ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
+ for (int i = 0; i < n_members; ++i) {
+ ir_node *addr;
+ ir_type *irtype;
+ ir_entity *sub_entity;
+ if (is_Array_type(type)) {
+ ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
+ ir_tarval *index_tv = new_tarval_from_long(i, mode_uint);
+ ir_node *cnst = new_d_Const(dbgi, index_tv);
ir_node *in[1] = { cnst };
- irtype = get_array_element_type(type);
- addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
+ irtype = get_array_element_type(type);
+ sub_entity = get_array_element_entity(type);
+ addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in,
+ sub_entity);
} else {
- ir_entity *member = get_compound_member(type, i);
-
- irtype = get_entity_type(member);
- addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
+ sub_entity = get_compound_member(type, i);
+ irtype = get_entity_type(sub_entity);
+ addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr,
+ sub_entity);
}
ir_initializer_t *sub_init
= get_initializer_compound_value(initializer, i);
- create_dynamic_initializer_sub(sub_init, irtype, dbgi, addr);
+ create_dynamic_initializer_sub(sub_init, sub_entity, irtype, dbgi,
+ addr);
}
return;
}
static void create_dynamic_initializer(ir_initializer_t *initializer,
dbg_info *dbgi, ir_entity *entity)
{
- ir_node *frame = get_local_frame(entity);
+ ir_node *frame = get_irg_frame(current_ir_graph);
ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
ir_type *type = get_entity_type(entity);
- create_dynamic_initializer_sub(initializer, type, dbgi, base_addr);
+ create_dynamic_initializer_sub(initializer, entity, type, dbgi, base_addr);
}
static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
ir_node *frame = get_irg_frame(current_ir_graph);
ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
- if(initializer->kind == INITIALIZER_VALUE) {
+ if (initializer->kind == INITIALIZER_VALUE) {
initializer_value_t *initializer_value = &initializer->value;
ir_node *value = expression_to_firm(initializer_value->value);
return;
}
- if(!is_constant_initializer(initializer)) {
+ if (is_constant_initializer(initializer) == EXPR_CLASS_VARIABLE) {
ir_initializer_t *irinitializer
= create_ir_initializer(initializer, type);
return;
}
- /* create the ir_initializer */
- ir_graph *const old_current_ir_graph = current_ir_graph;
- current_ir_graph = get_const_code_irg();
-
- ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
-
- assert(current_ir_graph == get_const_code_irg());
- current_ir_graph = old_current_ir_graph;
-
/* create a "template" entity which is copied to the entity on the stack */
- ident *const id = unique_ident("initializer");
- ir_type *const irtype = get_ir_type(type);
- ir_type *const global_type = get_glob_type();
- ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
- set_entity_ld_ident(init_entity, id);
-
- set_entity_variability(init_entity, variability_initialized);
- set_entity_visibility(init_entity, visibility_local);
- set_entity_allocation(init_entity, allocation_static);
-
- set_entity_initializer(init_entity, irinitializer);
-
- ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
+ ir_entity *const init_entity
+ = create_initializer_entity(dbgi, initializer, type);
+ ir_node *const src_addr = create_symconst(dbgi, init_entity);
+ ir_type *const irtype = get_ir_type(type);
ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
- ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
+ ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M);
set_store(copyb_mem);
}
-static void create_initializer_local_variable_entity(declaration_t *declaration)
+static void create_initializer_local_variable_entity(entity_t *entity)
{
- initializer_t *initializer = declaration->init.initializer;
- dbg_info *dbgi = get_dbg_info(&declaration->source_position);
- ir_entity *entity = declaration->v.entity;
- type_t *type = declaration->type;
- create_local_initializer(initializer, dbgi, entity, type);
+ assert(entity->kind == ENTITY_VARIABLE);
+ initializer_t *initializer = entity->variable.initializer;
+ dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
+ ir_entity *irentity = entity->variable.v.entity;
+ type_t *type = entity->declaration.type;
+
+ create_local_initializer(initializer, dbgi, irentity, type);
}
-static void create_declaration_initializer(declaration_t *declaration)
+static void create_variable_initializer(entity_t *entity)
{
- initializer_t *initializer = declaration->init.initializer;
- if(initializer == NULL)
+ assert(entity->kind == ENTITY_VARIABLE);
+ initializer_t *initializer = entity->variable.initializer;
+ if (initializer == NULL)
return;
declaration_kind_t declaration_kind
- = (declaration_kind_t) declaration->declaration_kind;
- if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
- create_initializer_local_variable_entity(declaration);
+ = (declaration_kind_t) entity->declaration.kind;
+ if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
+ create_initializer_local_variable_entity(entity);
return;
}
- if(initializer->kind == INITIALIZER_VALUE) {
- initializer_value_t *initializer_value = &initializer->value;
+ type_t *type = entity->declaration.type;
+ type_qualifiers_t tq = get_type_qualifier(type, true);
- ir_node *value = expression_to_firm(initializer_value->value);
+ if (initializer->kind == INITIALIZER_VALUE) {
+ expression_t * value = initializer->value.value;
+ type_t *const init_type = skip_typeref(value->base.type);
+
+ if (!is_type_scalar(init_type)) {
+ /* skip convs */
+ while (value->kind == EXPR_UNARY_CAST)
+ value = value->unary.value;
+
+ if (value->kind != EXPR_COMPOUND_LITERAL)
+ panic("expected non-scalar initializer to be a compound literal");
+ initializer = value->compound_literal.initializer;
+ goto have_initializer;
+ }
- if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
- set_value(declaration->v.value_number, value);
+ ir_node * node = expression_to_firm(value);
+ dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
+ ir_mode *const mode = get_ir_mode_storage(init_type);
+ node = create_conv(dbgi, node, mode);
+ node = do_strict_conv(dbgi, node);
+
+ if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
+ set_value(entity->variable.v.value_number, node);
} else {
assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
- ir_entity *entity = declaration->v.entity;
+ ir_entity *irentity = entity->variable.v.entity;
- set_entity_variability(entity, variability_initialized);
- set_atomic_ent_value(entity, value);
+ if (tq & TYPE_QUALIFIER_CONST
+ && get_entity_owner(irentity) != get_tls_type()) {
+ add_entity_linkage(irentity, IR_LINKAGE_CONSTANT);
+ }
+ set_atomic_ent_value(irentity, node);
}
} else {
- assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY
- || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
+have_initializer:
+ assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY ||
+ declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
- ir_entity *entity = declaration->v.entity;
+ ir_entity *irentity = entity->variable.v.entity;
ir_initializer_t *irinitializer
- = create_ir_initializer(initializer, declaration->type);
+ = create_ir_initializer(initializer, type);
- set_entity_variability(entity, variability_initialized);
- set_entity_initializer(entity, irinitializer);
+ if (tq & TYPE_QUALIFIER_CONST) {
+ add_entity_linkage(irentity, IR_LINKAGE_CONSTANT);
+ }
+ set_entity_initializer(irentity, irinitializer);
}
}
-static void create_variable_length_array(declaration_t *declaration)
+static void create_variable_length_array(entity_t *entity)
{
- dbg_info *dbgi = get_dbg_info(&declaration->source_position);
- type_t *type = declaration->type;
- ir_node *mem = get_store();
+ assert(entity->kind == ENTITY_VARIABLE);
+ assert(entity->variable.initializer == NULL);
+
+ entity->declaration.kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
+ entity->variable.v.vla_base = NULL;
+
+ /* TODO: record VLA somewhere so we create the free node when we leave
+ * it's scope */
+}
+
+static void allocate_variable_length_array(entity_t *entity)
+{
+ assert(entity->kind == ENTITY_VARIABLE);
+ assert(entity->variable.initializer == NULL);
+ assert(currently_reachable());
+
+ dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
+ type_t *type = entity->declaration.type;
ir_type *el_type = get_ir_type(type->array.element_type);
/* make sure size_node is calculated */
- get_type_size(type);
+ get_type_size_node(type);
ir_node *elems = type->array.size_node;
+ ir_node *mem = get_store();
ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
set_store(proj_m);
- /* initializers are not allowed for VLAs */
- assert(declaration->init.initializer == NULL);
-
- declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
- declaration->v.vla_base = addr;
-
- /* TODO: record VLA somewhere so we create the free node when we leave
- * it's scope */
+ assert(entity->declaration.kind == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
+ entity->variable.v.vla_base = addr;
}
/**
* Creates a Firm local variable from a declaration.
*/
-static void create_local_variable(declaration_t *declaration)
+static void create_local_variable(entity_t *entity)
{
- assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
+ assert(entity->kind == ENTITY_VARIABLE);
+ assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
- bool needs_entity = declaration->address_taken;
- type_t *type = skip_typeref(declaration->type);
+ bool needs_entity = entity->variable.address_taken;
+ type_t *type = skip_typeref(entity->declaration.type);
/* is it a variable length array? */
- if(is_type_array(type) && !type->array.size_constant) {
- create_variable_length_array(declaration);
+ if (is_type_array(type) && !type->array.size_constant) {
+ create_variable_length_array(entity);
return;
- } else if(is_type_array(type) || is_type_compound(type)) {
+ } else if (is_type_array(type) || is_type_compound(type)) {
needs_entity = true;
- } else if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
+ } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
needs_entity = true;
}
- if(needs_entity) {
+ if (needs_entity) {
ir_type *frame_type = get_irg_frame_type(current_ir_graph);
- create_declaration_entity(declaration,
- DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
- frame_type);
+ create_variable_entity(entity,
+ DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
+ frame_type);
} else {
- declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
- declaration->v.value_number = next_value_number_function;
- set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
+ entity->declaration.kind = DECLARATION_KIND_LOCAL_VARIABLE;
+ entity->variable.v.value_number = next_value_number_function;
+ set_irg_loc_description(current_ir_graph, next_value_number_function,
+ entity);
++next_value_number_function;
}
-
- create_declaration_initializer(declaration);
}
-static void create_local_static_variable(declaration_t *declaration)
+static void create_local_static_variable(entity_t *entity)
{
- assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
+ assert(entity->kind == ENTITY_VARIABLE);
+ assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
- type_t *const type = skip_typeref(declaration->type);
- ir_type *const global_type = get_glob_type();
- ident *const id = unique_ident(declaration->symbol->string);
- ir_type *const irtype = get_ir_type(type);
- dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
- ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
- set_entity_ld_ident(entity, id);
+ type_t *type = skip_typeref(entity->declaration.type);
+ ir_type *const var_type = entity->variable.thread_local ?
+ get_tls_type() : get_glob_type();
+ ir_type *const irtype = get_ir_type(type);
+ dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
- if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
- set_entity_volatility(entity, volatility_is_volatile);
+ size_t l = strlen(entity->base.symbol->string);
+ char buf[l + sizeof(".%u")];
+ snprintf(buf, sizeof(buf), "%s.%%u", entity->base.symbol->string);
+ ident *const id = id_unique(buf);
+ ir_entity *const irentity = new_d_entity(var_type, id, irtype, dbgi);
+
+ if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
+ set_entity_volatility(irentity, volatility_is_volatile);
}
- declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
- declaration->v.entity = entity;
- set_entity_variability(entity, variability_uninitialized);
- set_entity_visibility(entity, visibility_local);
- set_entity_allocation(entity, allocation_static);
+ entity->declaration.kind = DECLARATION_KIND_GLOBAL_VARIABLE;
+ entity->variable.v.entity = irentity;
+
+ set_entity_ld_ident(irentity, id);
+ set_entity_visibility(irentity, ir_visibility_local);
ir_graph *const old_current_ir_graph = current_ir_graph;
current_ir_graph = get_const_code_irg();
- create_declaration_initializer(declaration);
+ create_variable_initializer(entity);
assert(current_ir_graph == get_const_code_irg());
current_ir_graph = old_current_ir_graph;
-static void return_statement_to_firm(return_statement_t *statement)
+static ir_node *return_statement_to_firm(return_statement_t *statement)
{
- if(get_cur_block() == NULL)
- return;
-
- dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
- ir_type *func_irtype = get_ir_type(current_function_decl->type);
-
+ if (!currently_reachable())
+ return NULL;
- ir_node *in[1];
- int in_len;
- if(get_method_n_ress(func_irtype) > 0) {
- ir_type *res_type = get_method_res_type(func_irtype, 0);
+ dbg_info *const dbgi = get_dbg_info(&statement->base.source_position);
+ type_t *const type = skip_typeref(current_function_entity->declaration.type->function.return_type);
+ ir_node * res = statement->value ? expression_to_firm(statement->value) : NULL;
- if(statement->value != NULL) {
- ir_node *node = expression_to_firm(statement->value);
- node = do_strict_conv(dbgi, node);
- in[0] = node;
+ int in_len;
+ if (!is_type_void(type)) {
+ ir_mode *const mode = get_ir_mode_storage(type);
+ if (res) {
+ res = create_conv(dbgi, res, mode);
+ res = do_strict_conv(dbgi, res);
} else {
- ir_mode *mode;
- if(is_compound_type(res_type)) {
- mode = mode_P_data;
- } else {
- mode = get_type_mode(res_type);
- }
- in[0] = new_Unknown(mode);
+ res = new_Unknown(mode);
}
in_len = 1;
} else {
- /* build return_value for its side effects */
- if(statement->value != NULL) {
- expression_to_firm(statement->value);
- }
in_len = 0;
}
- ir_node *store = get_store();
- ir_node *ret = new_d_Return(dbgi, store, in_len, in);
+ ir_node *const in[1] = { res };
+ ir_node *const store = get_store();
+ ir_node *const ret = new_d_Return(dbgi, store, in_len, in);
ir_node *end_block = get_irg_end_block(current_ir_graph);
add_immBlock_pred(end_block, ret);
- set_cur_block(NULL);
+ set_unreachable_now();
+ return NULL;
}
static ir_node *expression_statement_to_firm(expression_statement_t *statement)
{
- if(get_cur_block() == NULL)
+ if (!currently_reachable())
return NULL;
return expression_to_firm(statement->expression);
static ir_node *compound_statement_to_firm(compound_statement_t *compound)
{
+ entity_t *entity = compound->scope.entities;
+ for ( ; entity != NULL; entity = entity->base.next) {
+ if (!is_declaration(entity))
+ continue;
+
+ create_local_declaration(entity);
+ }
+
ir_node *result = NULL;
statement_t *statement = compound->statements;
- for( ; statement != NULL; statement = statement->base.next) {
- //context2firm(&statement->scope);
-
- if(statement->base.next == NULL
- && statement->kind == STATEMENT_EXPRESSION) {
- result = expression_statement_to_firm(
- &statement->expression);
- break;
- }
- statement_to_firm(statement);
+ for ( ; statement != NULL; statement = statement->base.next) {
+ result = statement_to_firm(statement);
}
return result;
}
-static void create_global_variable(declaration_t *declaration)
+static void create_global_variable(entity_t *entity)
{
- ir_visibility vis;
- ir_type *var_type;
- switch ((storage_class_tag_t)declaration->storage_class) {
- case STORAGE_CLASS_STATIC:
- vis = visibility_local;
- goto global_var;
-
- case STORAGE_CLASS_EXTERN:
- vis = visibility_external_allocated;
- goto global_var;
-
- case STORAGE_CLASS_NONE:
- vis = visibility_external_visible;
- goto global_var;
+ ir_linkage linkage = IR_LINKAGE_DEFAULT;
+ ir_visibility visibility = ir_visibility_default;
+ ir_entity *irentity;
+ assert(entity->kind == ENTITY_VARIABLE);
- case STORAGE_CLASS_THREAD:
- vis = visibility_external_visible;
- goto tls_var;
-
- case STORAGE_CLASS_THREAD_EXTERN:
- vis = visibility_external_allocated;
- goto tls_var;
-
- case STORAGE_CLASS_THREAD_STATIC:
- vis = visibility_local;
- goto tls_var;
-
-tls_var:
- var_type = get_tls_type();
- goto create_var;
-
-global_var:
- var_type = get_glob_type();
- goto create_var;
-
-create_var:
- create_declaration_entity(declaration,
- DECLARATION_KIND_GLOBAL_VARIABLE,
- var_type);
- set_entity_visibility(declaration->v.entity, vis);
-
- return;
+ switch ((storage_class_tag_t)entity->declaration.storage_class) {
+ case STORAGE_CLASS_EXTERN: visibility = ir_visibility_external; break;
+ case STORAGE_CLASS_STATIC: visibility = ir_visibility_local; break;
+ case STORAGE_CLASS_NONE:
+ visibility = ir_visibility_default;
+ /* uninitialized globals get merged in C */
+ if (entity->variable.initializer == NULL)
+ linkage |= IR_LINKAGE_MERGE;
+ break;
+ case STORAGE_CLASS_TYPEDEF:
+ case STORAGE_CLASS_AUTO:
+ case STORAGE_CLASS_REGISTER:
+ panic("invalid storage class for global var");
+ }
- case STORAGE_CLASS_TYPEDEF:
- case STORAGE_CLASS_AUTO:
- case STORAGE_CLASS_REGISTER:
- case STORAGE_CLASS_ENUM_ENTRY:
- break;
+ ir_type *var_type = get_glob_type();
+ if (entity->variable.thread_local) {
+ var_type = get_tls_type();
+ /* LINKAGE_MERGE not supported by current linkers */
+ linkage &= ~IR_LINKAGE_MERGE;
}
- panic("Invalid storage class for global variable");
+ create_variable_entity(entity, DECLARATION_KIND_GLOBAL_VARIABLE, var_type);
+ irentity = entity->variable.v.entity;
+ add_entity_linkage(irentity, linkage);
+ set_entity_visibility(irentity, visibility);
}
-static void create_local_declaration(declaration_t *declaration)
+static void create_local_declaration(entity_t *entity)
{
- if(declaration->symbol == NULL)
- return;
+ assert(is_declaration(entity));
- type_t *type = skip_typeref(declaration->type);
+ /* construct type */
+ (void) get_ir_type(entity->declaration.type);
+ if (entity->base.symbol == NULL) {
+ return;
+ }
- switch ((storage_class_tag_t) declaration->storage_class) {
+ switch ((storage_class_tag_t) entity->declaration.storage_class) {
case STORAGE_CLASS_STATIC:
- create_local_static_variable(declaration);
+ if (entity->kind == ENTITY_FUNCTION) {
+ (void)get_function_entity(entity, NULL);
+ } else {
+ create_local_static_variable(entity);
+ }
return;
case STORAGE_CLASS_EXTERN:
- create_global_variable(declaration);
- create_declaration_initializer(declaration);
+ if (entity->kind == ENTITY_FUNCTION) {
+ assert(entity->function.statement == NULL);
+ (void)get_function_entity(entity, NULL);
+ } else {
+ create_global_variable(entity);
+ create_variable_initializer(entity);
+ }
return;
case STORAGE_CLASS_NONE:
case STORAGE_CLASS_AUTO:
case STORAGE_CLASS_REGISTER:
- if(is_type_function(type)) {
- if(declaration->init.statement != NULL) {
- panic("nested functions not supported yet");
+ if (entity->kind == ENTITY_FUNCTION) {
+ if (entity->function.statement != NULL) {
+ ir_type *owner = get_irg_frame_type(current_ir_graph);
+ (void)get_function_entity(entity, owner);
+ entity->declaration.kind = DECLARATION_KIND_INNER_FUNCTION;
+ enqueue_inner_function(entity);
} else {
- get_function_entity(declaration);
+ (void)get_function_entity(entity, NULL);
}
} else {
- create_local_variable(declaration);
+ create_local_variable(entity);
}
return;
- case STORAGE_CLASS_ENUM_ENTRY:
case STORAGE_CLASS_TYPEDEF:
- case STORAGE_CLASS_THREAD:
- case STORAGE_CLASS_THREAD_EXTERN:
- case STORAGE_CLASS_THREAD_STATIC:
- return;
+ break;
}
panic("invalid storage class found");
}
-static void declaration_statement_to_firm(declaration_statement_t *statement)
+static void initialize_local_declaration(entity_t *entity)
{
- declaration_t *declaration = statement->declarations_begin;
- declaration_t *end = statement->declarations_end->next;
- for( ; declaration != end; declaration = declaration->next) {
- if(declaration->namespc != NAMESPACE_NORMAL)
- continue;
- create_local_declaration(declaration);
+ if (entity->base.symbol == NULL)
+ return;
+
+ // no need to emit code in dead blocks
+ if (entity->declaration.storage_class != STORAGE_CLASS_STATIC
+ && !currently_reachable())
+ return;
+
+ switch ((declaration_kind_t) entity->declaration.kind) {
+ case DECLARATION_KIND_LOCAL_VARIABLE:
+ case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
+ create_variable_initializer(entity);
+ return;
+
+ case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
+ allocate_variable_length_array(entity);
+ return;
+
+ case DECLARATION_KIND_COMPOUND_MEMBER:
+ case DECLARATION_KIND_GLOBAL_VARIABLE:
+ case DECLARATION_KIND_FUNCTION:
+ case DECLARATION_KIND_INNER_FUNCTION:
+ return;
+
+ case DECLARATION_KIND_PARAMETER:
+ case DECLARATION_KIND_PARAMETER_ENTITY:
+ panic("can't initialize parameters");
+
+ case DECLARATION_KIND_UNKNOWN:
+ panic("can't initialize unknown declaration");
}
+ panic("invalid declaration kind");
}
-static void if_statement_to_firm(if_statement_t *statement)
+static ir_node *declaration_statement_to_firm(declaration_statement_t *statement)
{
- ir_node *cur_block = get_cur_block();
-
- ir_node *fallthrough_block = new_immBlock();
+ entity_t *entity = statement->declarations_begin;
+ if (entity == NULL)
+ return NULL;
- /* the true (blocks) */
- ir_node *true_block;
- if (statement->true_statement != NULL) {
- true_block = new_immBlock();
- statement_to_firm(statement->true_statement);
- if(get_cur_block() != NULL) {
- ir_node *jmp = new_Jmp();
- add_immBlock_pred(fallthrough_block, jmp);
+ entity_t *const last = statement->declarations_end;
+ for ( ;; entity = entity->base.next) {
+ if (is_declaration(entity)) {
+ initialize_local_declaration(entity);
+ } else if (entity->kind == ENTITY_TYPEDEF) {
+ /* ยง6.7.7:3 Any array size expressions associated with variable length
+ * array declarators are evaluated each time the declaration of the
+ * typedef name is reached in the order of execution. */
+ type_t *const type = skip_typeref(entity->typedefe.type);
+ if (is_type_array(type) && type->array.is_vla)
+ get_vla_size(&type->array);
}
- } else {
- true_block = fallthrough_block;
+ if (entity == last)
+ break;
}
- /* the false (blocks) */
- ir_node *false_block;
- if(statement->false_statement != NULL) {
- false_block = new_immBlock();
+ return NULL;
+}
- statement_to_firm(statement->false_statement);
- if(get_cur_block() != NULL) {
- ir_node *jmp = new_Jmp();
- add_immBlock_pred(fallthrough_block, jmp);
- }
- } else {
- false_block = fallthrough_block;
+static ir_node *if_statement_to_firm(if_statement_t *statement)
+{
+ /* Create the condition. */
+ ir_node *true_block = NULL;
+ ir_node *false_block = NULL;
+ if (currently_reachable()) {
+ true_block = new_immBlock();
+ false_block = new_immBlock();
+ create_condition_evaluation(statement->condition, true_block, false_block);
+ mature_immBlock(true_block);
+ mature_immBlock(false_block);
}
- /* create the condition */
- if(cur_block != NULL) {
- set_cur_block(cur_block);
- create_condition_evaluation(statement->condition, true_block,
- false_block);
+ /* Create the true statement. */
+ set_cur_block(true_block);
+ statement_to_firm(statement->true_statement);
+ ir_node *fallthrough_block = get_cur_block();
+
+ /* Create the false statement. */
+ set_cur_block(false_block);
+ if (statement->false_statement != NULL) {
+ statement_to_firm(statement->false_statement);
}
- mature_immBlock(true_block);
- if(false_block != fallthrough_block) {
- mature_immBlock(false_block);
+ /* Handle the block after the if-statement. Minor simplification and
+ * optimisation: Reuse the false/true block as fallthrough block, if the
+ * true/false statement does not pass control to the fallthrough block, e.g.
+ * in the typical if (x) return; pattern. */
+ if (fallthrough_block) {
+ if (currently_reachable()) {
+ ir_node *const t_jump = new_r_Jmp(fallthrough_block);
+ ir_node *const f_jump = new_Jmp();
+ ir_node *const in[] = { t_jump, f_jump };
+ fallthrough_block = new_Block(2, in);
+ }
+ set_cur_block(fallthrough_block);
}
- mature_immBlock(fallthrough_block);
- set_cur_block(fallthrough_block);
+ return NULL;
}
-static void while_statement_to_firm(while_statement_t *statement)
+/**
+ * Add an unconditional jump to the target block. If the source block is not
+ * reachable, then a Bad predecessor is created to prevent Phi-less unreachable
+ * loops. This is necessary if the jump potentially enters a loop.
+ */
+static void jump_to(ir_node *const target_block)
{
- ir_node *jmp = NULL;
- if(get_cur_block() != NULL) {
- jmp = new_Jmp();
- }
+ ir_node *const pred = currently_reachable() ? new_Jmp() : new_Bad(mode_X);
+ add_immBlock_pred(target_block, pred);
+}
- /* create the header block */
- ir_node *header_block = new_immBlock();
- if(jmp != NULL) {
- add_immBlock_pred(header_block, jmp);
- }
+/**
+ * Add an unconditional jump to the target block, if the current block is
+ * reachable and do nothing otherwise. This is only valid if the jump does not
+ * enter a loop (a back edge is ok).
+ */
+static void jump_if_reachable(ir_node *const target_block)
+{
+ if (currently_reachable())
+ add_immBlock_pred(target_block, new_Jmp());
+}
- /* the false block */
- ir_node *false_block = new_immBlock();
+static ir_node *while_statement_to_firm(while_statement_t *statement)
+{
+ /* Create the header block */
+ ir_node *const header_block = new_immBlock();
+ jump_to(header_block);
+
+ /* Create the condition. */
+ ir_node * body_block;
+ ir_node * false_block;
+ expression_t *const cond = statement->condition;
+ if (is_constant_expression(cond) == EXPR_CLASS_CONSTANT &&
+ fold_constant_to_bool(cond)) {
+ /* Shortcut for while (true). */
+ body_block = header_block;
+ false_block = NULL;
- /* the loop body */
- ir_node *body_block;
- if (statement->body != NULL) {
- ir_node *old_continue_label = continue_label;
- ir_node *old_break_label = break_label;
- continue_label = header_block;
- break_label = false_block;
-
- body_block = new_immBlock();
- statement_to_firm(statement->body);
-
- assert(continue_label == header_block);
- assert(break_label == false_block);
- continue_label = old_continue_label;
- break_label = old_break_label;
-
- if(get_cur_block() != NULL) {
- jmp = new_Jmp();
- add_immBlock_pred(header_block, jmp);
- }
+ keep_alive(header_block);
+ keep_all_memory(header_block);
} else {
- body_block = header_block;
+ body_block = new_immBlock();
+ false_block = new_immBlock();
+
+ set_cur_block(header_block);
+ create_condition_evaluation(cond, body_block, false_block);
+ mature_immBlock(body_block);
}
- /* create the condition */
- set_cur_block(header_block);
+ ir_node *const old_continue_label = continue_label;
+ ir_node *const old_break_label = break_label;
+ continue_label = header_block;
+ break_label = false_block;
- create_condition_evaluation(statement->condition, body_block, false_block);
- mature_immBlock(body_block);
- mature_immBlock(false_block);
- mature_immBlock(header_block);
+ /* Create the loop body. */
+ set_cur_block(body_block);
+ statement_to_firm(statement->body);
+ jump_if_reachable(header_block);
+ mature_immBlock(header_block);
+ assert(false_block == NULL || false_block == break_label);
+ false_block = break_label;
+ if (false_block != NULL) {
+ mature_immBlock(false_block);
+ }
set_cur_block(false_block);
+
+ assert(continue_label == header_block);
+ continue_label = old_continue_label;
+ break_label = old_break_label;
+ return NULL;
}
-static void do_while_statement_to_firm(do_while_statement_t *statement)
+static ir_node *get_break_label(void)
{
- ir_node *jmp = NULL;
- if(get_cur_block() != NULL) {
- jmp = new_Jmp();
+ if (break_label == NULL) {
+ break_label = new_immBlock();
}
+ return break_label;
+}
+static ir_node *do_while_statement_to_firm(do_while_statement_t *statement)
+{
/* create the header block */
ir_node *header_block = new_immBlock();
- /* the false block */
- ir_node *false_block = new_immBlock();
-
/* the loop body */
ir_node *body_block = new_immBlock();
- if(jmp != NULL) {
- add_immBlock_pred(body_block, jmp);
- }
+ jump_to(body_block);
- if (statement->body != NULL) {
- ir_node *old_continue_label = continue_label;
- ir_node *old_break_label = break_label;
- continue_label = header_block;
- break_label = false_block;
+ ir_node *old_continue_label = continue_label;
+ ir_node *old_break_label = break_label;
+ continue_label = header_block;
+ break_label = NULL;
- statement_to_firm(statement->body);
+ set_cur_block(body_block);
+ statement_to_firm(statement->body);
+ ir_node *const false_block = get_break_label();
- assert(continue_label == header_block);
- assert(break_label == false_block);
- continue_label = old_continue_label;
- break_label = old_break_label;
-
- if (get_cur_block() == NULL) {
- mature_immBlock(header_block);
- mature_immBlock(body_block);
- mature_immBlock(false_block);
- return;
- }
- }
+ assert(continue_label == header_block);
+ continue_label = old_continue_label;
+ break_label = old_break_label;
- ir_node *body_jmp = new_Jmp();
- add_immBlock_pred(header_block, body_jmp);
- mature_immBlock(header_block);
+ jump_if_reachable(header_block);
/* create the condition */
+ mature_immBlock(header_block);
set_cur_block(header_block);
create_condition_evaluation(statement->condition, body_block, false_block);
mature_immBlock(body_block);
mature_immBlock(false_block);
- mature_immBlock(header_block);
set_cur_block(false_block);
+ return NULL;
}
-static void for_statement_to_firm(for_statement_t *statement)
+static ir_node *for_statement_to_firm(for_statement_t *statement)
{
- ir_node *jmp = NULL;
- if (get_cur_block() != NULL) {
- if(statement->initialisation != NULL) {
- expression_to_firm(statement->initialisation);
- }
-
- /* create declarations */
- declaration_t *declaration = statement->scope.declarations;
- for( ; declaration != NULL; declaration = declaration->next) {
- create_local_declaration(declaration);
- }
+ /* create declarations */
+ entity_t *entity = statement->scope.entities;
+ for ( ; entity != NULL; entity = entity->base.next) {
+ if (!is_declaration(entity))
+ continue;
- jmp = new_Jmp();
+ create_local_declaration(entity);
}
+ if (currently_reachable()) {
+ entity = statement->scope.entities;
+ for ( ; entity != NULL; entity = entity->base.next) {
+ if (!is_declaration(entity))
+ continue;
- /* create the step block */
- ir_node *const step_block = new_immBlock();
- if (statement->step != NULL) {
- expression_to_firm(statement->step);
+ initialize_local_declaration(entity);
+ }
+
+ if (statement->initialisation != NULL) {
+ expression_to_firm(statement->initialisation);
+ }
}
- ir_node *const step_jmp = new_Jmp();
- /* create the header block */
+ /* Create the header block */
ir_node *const header_block = new_immBlock();
- if (jmp != NULL) {
- add_immBlock_pred(header_block, jmp);
- }
- add_immBlock_pred(header_block, step_jmp);
+ jump_to(header_block);
- /* the false block */
- ir_node *const false_block = new_immBlock();
+ /* Create the condition. */
+ ir_node *body_block;
+ ir_node *false_block;
+ if (statement->condition != NULL) {
+ body_block = new_immBlock();
+ false_block = new_immBlock();
- /* the loop body */
- ir_node * body_block;
- if (statement->body != NULL) {
- ir_node *const old_continue_label = continue_label;
- ir_node *const old_break_label = break_label;
- continue_label = step_block;
- break_label = false_block;
-
- body_block = new_immBlock();
- statement_to_firm(statement->body);
-
- assert(continue_label == step_block);
- assert(break_label == false_block);
- continue_label = old_continue_label;
- break_label = old_break_label;
-
- if (get_cur_block() != NULL) {
- jmp = new_Jmp();
- add_immBlock_pred(step_block, jmp);
- }
+ set_cur_block(header_block);
+ create_condition_evaluation(statement->condition, body_block, false_block);
+ mature_immBlock(body_block);
} else {
- body_block = step_block;
- }
+ /* for-ever. */
+ body_block = header_block;
+ false_block = NULL;
- /* create the condition */
- set_cur_block(header_block);
- if (statement->condition != NULL) {
- create_condition_evaluation(statement->condition, body_block,
- false_block);
- } else {
keep_alive(header_block);
- jmp = new_Jmp();
- add_immBlock_pred(body_block, jmp);
+ keep_all_memory(header_block);
}
- mature_immBlock(body_block);
- mature_immBlock(false_block);
- mature_immBlock(step_block);
- mature_immBlock(header_block);
- mature_immBlock(false_block);
+ /* Create the step block, if necessary. */
+ ir_node * step_block = header_block;
+ expression_t *const step = statement->step;
+ if (step != NULL) {
+ step_block = new_immBlock();
+ }
+
+ ir_node *const old_continue_label = continue_label;
+ ir_node *const old_break_label = break_label;
+ continue_label = step_block;
+ break_label = false_block;
+
+ /* Create the loop body. */
+ set_cur_block(body_block);
+ statement_to_firm(statement->body);
+ jump_if_reachable(step_block);
+
+ /* Create the step code. */
+ if (step != NULL) {
+ mature_immBlock(step_block);
+ set_cur_block(step_block);
+ expression_to_firm(step);
+ jump_if_reachable(header_block);
+ }
+ mature_immBlock(header_block);
+ assert(false_block == NULL || false_block == break_label);
+ false_block = break_label;
+ if (false_block != NULL) {
+ mature_immBlock(false_block);
+ }
set_cur_block(false_block);
+
+ assert(continue_label == step_block);
+ continue_label = old_continue_label;
+ break_label = old_break_label;
+ return NULL;
}
-static void create_jump_statement(const statement_t *statement,
- ir_node *target_block)
+static ir_node *create_jump_statement(const statement_t *statement, ir_node *target_block)
{
- if(get_cur_block() == NULL)
- return;
+ if (!currently_reachable())
+ return NULL;
dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
ir_node *jump = new_d_Jmp(dbgi);
add_immBlock_pred(target_block, jump);
- set_cur_block(NULL);
+ set_unreachable_now();
+ return NULL;
}
-static void switch_statement_to_firm(const switch_statement_t *statement)
+static ir_switch_table *create_switch_table(const switch_statement_t *statement)
{
- dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
-
- ir_node *expression = expression_to_firm(statement->expression);
- ir_node *cond = new_d_Cond(dbgi, expression);
- ir_node *break_block = new_immBlock();
-
- set_cur_block(NULL);
-
- ir_node *const old_switch_cond = current_switch_cond;
- ir_node *const old_break_label = break_label;
- const bool old_saw_default_label = saw_default_label;
- current_switch_cond = cond;
- break_label = break_block;
-
- if (statement->body != NULL) {
- statement_to_firm(statement->body);
- }
-
- if(get_cur_block() != NULL) {
- ir_node *jmp = new_Jmp();
- add_immBlock_pred(break_block, jmp);
+ /* determine number of cases */
+ size_t n_cases = 0;
+ for (case_label_statement_t *l = statement->first_case; l != NULL;
+ l = l->next) {
+ /* default case */
+ if (l->expression == NULL)
+ continue;
+ if (l->is_empty_range)
+ continue;
+ ++n_cases;
}
- if (!saw_default_label) {
- set_cur_block(get_nodes_block(cond));
- ir_node *const proj = new_d_defaultProj(dbgi, cond,
- MAGIC_DEFAULT_PN_NUMBER);
- add_immBlock_pred(break_block, proj);
+ ir_switch_table *res = ir_new_switch_table(current_ir_graph, n_cases);
+ size_t i = 0;
+ for (case_label_statement_t *l = statement->first_case; l != NULL;
+ l = l->next) {
+ if (l->expression == NULL) {
+ l->pn = pn_Switch_default;
+ continue;
+ }
+ if (l->is_empty_range)
+ continue;
+ ir_tarval *min = fold_constant_to_tarval(l->expression);
+ ir_tarval *max = min;
+ long pn = (long) i+1;
+ if (l->end_range != NULL)
+ max = fold_constant_to_tarval(l->end_range);
+ ir_switch_table_set(res, i++, min, max, pn);
+ l->pn = pn;
}
-
- assert(current_switch_cond == cond);
- assert(break_label == break_block);
- current_switch_cond = old_switch_cond;
- break_label = old_break_label;
- saw_default_label = old_saw_default_label;
-
- mature_immBlock(break_block);
- set_cur_block(break_block);
+ return res;
}
-static void case_label_to_firm(const case_label_statement_t *statement)
+static ir_node *switch_statement_to_firm(switch_statement_t *statement)
{
- dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
+ dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
+ ir_node *switch_node = NULL;
- ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
+ if (currently_reachable()) {
+ ir_node *expression = expression_to_firm(statement->expression);
+ ir_switch_table *table = create_switch_table(statement);
+ unsigned n_outs = (unsigned)ir_switch_table_get_n_entries(table) + 1;
- /* let's create a node and hope firm constant folding creates a Const
- * node... */
- ir_node *proj;
- ir_node *old_block = get_nodes_block(current_switch_cond);
- ir_node *block = new_immBlock();
+ switch_node = new_d_Switch(dbgi, expression, n_outs, table);
+ }
- set_cur_block(old_block);
- if(statement->expression != NULL) {
- long start_pn = fold_constant(statement->expression);
- long end_pn = start_pn;
- if (statement->end_range != NULL) {
- end_pn = fold_constant(statement->end_range);
- }
- assert(start_pn <= end_pn);
- /* create jumps for all cases in the given range */
- for (long pn = start_pn; pn <= end_pn; ++pn) {
- if(pn == MAGIC_DEFAULT_PN_NUMBER) {
- /* oops someone detected our cheating... */
- panic("magic default pn used");
- }
- proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
- add_immBlock_pred(block, proj);
- }
- } else {
- saw_default_label = true;
- proj = new_d_defaultProj(dbgi, current_switch_cond,
- MAGIC_DEFAULT_PN_NUMBER);
+ set_unreachable_now();
- add_immBlock_pred(block, proj);
+ ir_node *const old_switch = current_switch;
+ ir_node *const old_break_label = break_label;
+ const bool old_saw_default_label = saw_default_label;
+ saw_default_label = false;
+ current_switch = switch_node;
+ break_label = NULL;
+
+ statement_to_firm(statement->body);
+
+ if (currently_reachable()) {
+ add_immBlock_pred(get_break_label(), new_Jmp());
}
- if (fallthrough != NULL) {
- add_immBlock_pred(block, fallthrough);
+ if (!saw_default_label && switch_node) {
+ ir_node *proj = new_d_Proj(dbgi, switch_node, mode_X, pn_Switch_default);
+ add_immBlock_pred(get_break_label(), proj);
}
- mature_immBlock(block);
- set_cur_block(block);
- if(statement->statement != NULL) {
- statement_to_firm(statement->statement);
+ if (break_label != NULL) {
+ mature_immBlock(break_label);
}
+ set_cur_block(break_label);
+
+ assert(current_switch == switch_node);
+ current_switch = old_switch;
+ break_label = old_break_label;
+ saw_default_label = old_saw_default_label;
+ return NULL;
}
-static ir_node *get_label_block(declaration_t *label)
+static ir_node *case_label_to_firm(const case_label_statement_t *statement)
{
- assert(label->namespc == NAMESPACE_LABEL);
-
- if(label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
- return label->v.block;
- }
- assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
+ if (statement->is_empty_range)
+ return NULL;
- ir_node *old_cur_block = get_cur_block();
- ir_node *block = new_immBlock();
- set_cur_block(old_cur_block);
+ if (current_switch != NULL) {
+ ir_node *block = new_immBlock();
+ /* Fallthrough from previous case */
+ jump_if_reachable(block);
- label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
- label->v.block = block;
+ ir_node *const proj = new_Proj(current_switch, mode_X, statement->pn);
+ add_immBlock_pred(block, proj);
+ if (statement->expression == NULL)
+ saw_default_label = true;
- ARR_APP1(ir_node *, imature_blocks, block);
+ mature_immBlock(block);
+ set_cur_block(block);
+ }
- return block;
+ return statement_to_firm(statement->statement);
}
-static void label_to_firm(const label_statement_t *statement)
+static ir_node *label_to_firm(const label_statement_t *statement)
{
ir_node *block = get_label_block(statement->label);
-
- if(get_cur_block() != NULL) {
- ir_node *jmp = new_Jmp();
- add_immBlock_pred(block, jmp);
- }
+ jump_to(block);
set_cur_block(block);
keep_alive(block);
+ keep_all_memory(block);
- if(statement->statement != NULL) {
- statement_to_firm(statement->statement);
- }
+ return statement_to_firm(statement->statement);
}
-static void goto_to_firm(const goto_statement_t *statement)
+static ir_node *computed_goto_to_firm(computed_goto_statement_t const *const statement)
{
- if(get_cur_block() == NULL)
- return;
+ if (!currently_reachable())
+ return NULL;
- ir_node *block = get_label_block(statement->label);
- ir_node *jmp = new_Jmp();
- add_immBlock_pred(block, jmp);
+ ir_node *const irn = expression_to_firm(statement->expression);
+ dbg_info *const dbgi = get_dbg_info(&statement->base.source_position);
+ ir_node *const ijmp = new_d_IJmp(dbgi, irn);
- set_cur_block(NULL);
-}
+ set_irn_link(ijmp, ijmp_list);
+ ijmp_list = ijmp;
-typedef enum modifier_t {
- ASM_MODIFIER_WRITE_ONLY = 1 << 0,
- ASM_MODIFIER_READ_WRITE = 1 << 1,
- ASM_MODIFIER_COMMUTATIVE = 1 << 2,
- ASM_MODIFIER_EARLYCLOBBER = 1 << 3,
-} modifier_t;
+ set_unreachable_now();
+ return NULL;
+}
-static void asm_statement_to_firm(const asm_statement_t *statement)
+static ir_node *asm_statement_to_firm(const asm_statement_t *statement)
{
- (void) statement;
- fprintf(stderr, "WARNING asm not implemented yet!\n");
-#if 0
bool needs_memory = false;
+ if (statement->is_volatile) {
+ needs_memory = true;
+ }
+
size_t n_clobbers = 0;
asm_clobber_t *clobber = statement->clobbers;
- for( ; clobber != NULL; clobber = clobber->next) {
- if(strcmp(clobber->clobber, "memory") == 0) {
+ for ( ; clobber != NULL; clobber = clobber->next) {
+ const char *clobber_str = clobber->clobber.begin;
+
+ if (!be_is_valid_clobber(clobber_str)) {
+ errorf(&statement->base.source_position,
+ "invalid clobber '%s' specified", clobber->clobber);
+ continue;
+ }
+
+ if (streq(clobber_str, "memory")) {
needs_memory = true;
continue;
}
- ident *id = new_id_from_str(clobber->clobber);
+ ident *id = new_id_from_str(clobber_str);
obstack_ptr_grow(&asm_obst, id);
++n_clobbers;
}
assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
ident **clobbers = NULL;
- if(n_clobbers > 0) {
+ if (n_clobbers > 0) {
clobbers = obstack_finish(&asm_obst);
}
- /* find and count input and output constraints */
- asm_constraint_t *constraint = statement->inputs;
- for( ; constraint != NULL; constraint = constraint->next) {
- int modifiers = 0;
- bool supports_memop = false;
- for(const char *c = constraint->constraints; *c != 0; ++c) {
- /* TODO: improve error messages */
- switch(*c) {
- case '?':
- case '!':
- panic("multiple alternative assembler constraints not "
- "supported");
- case 'm':
- case 'o':
- case 'V':
- case '<':
- case '>':
- case 'X':
- supports_memop = true;
- obstack_1grow(&asm_obst, *c);
- break;
- case '=':
- if(modifiers & ASM_MODIFIER_READ_WRITE)
- panic("inconsistent register constraints");
- modifiers |= ASM_MODIFIER_WRITE_ONLY;
- break;
- case '+':
- if(modifiers & ASM_MODIFIER_WRITE_ONLY)
- panic("inconsistent register constraints");
- modifiers |= ASM_MODIFIER_READ_WRITE;
- break;
- case '&':
- modifiers |= ASM_MODIFIER_EARLYCLOBBER;
- panic("early clobber assembler constraint not supported yet");
- break;
- case '%':
- modifiers |= ASM_MODIFIER_COMMUTATIVE;
- panic("commutative assembler constraint not supported yet");
- break;
- case '#':
- /* skip register preferences stuff... */
- while(*c != 0 && *c != ',')
- ++c;
- break;
- case '*':
- /* skip register preferences stuff... */
- ++c;
- break;
- default:
- obstack_1grow(&asm_obst, *c);
- break;
- }
- }
- obstack_1grow(&asm_obst, '\0');
- const char *constraint_string = obstack_finish(&asm_obst);
+ size_t n_inputs = 0;
+ asm_argument_t *argument = statement->inputs;
+ for ( ; argument != NULL; argument = argument->next)
+ n_inputs++;
+ size_t n_outputs = 0;
+ argument = statement->outputs;
+ for ( ; argument != NULL; argument = argument->next)
+ n_outputs++;
+
+ unsigned next_pos = 0;
+
+ ir_node *ins[n_inputs + n_outputs + 1];
+ size_t in_size = 0;
+
+ ir_asm_constraint tmp_in_constraints[n_outputs];
- needs_memory |= supports_memop;
- if(supports_memop) {
+ const expression_t *out_exprs[n_outputs];
+ ir_node *out_addrs[n_outputs];
+ size_t out_size = 0;
+ argument = statement->outputs;
+ for ( ; argument != NULL; argument = argument->next) {
+ const char *constraints = argument->constraints.begin;
+ asm_constraint_flags_t asm_flags
+ = be_parse_asm_constraints(constraints);
+
+ {
+ source_position_t const *const pos = &statement->base.source_position;
+ if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
+ warningf(WARN_OTHER, pos, "some constraints in '%s' are not supported", constraints);
+ }
+ if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
+ errorf(pos, "some constraints in '%s' are invalid", constraints);
+ continue;
+ }
+ if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
+ errorf(pos, "no write flag specified for output constraints '%s'", constraints);
+ continue;
+ }
}
- }
-#endif
-}
-static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
- statement_to_firm(statement->try_statement);
- warningf(&statement->base.source_position, "structured exception handling ignored");
-}
+ unsigned pos = next_pos++;
+ if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
+ || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
+ expression_t *expr = argument->expression;
+ ir_node *addr = expression_to_addr(expr);
+ /* in+output, construct an artifical same_as constraint on the
+ * input */
+ if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
+ char buf[64];
+ ir_node *value = get_value_from_lvalue(expr, addr);
+
+ snprintf(buf, sizeof(buf), "%u", (unsigned) out_size);
+
+ ir_asm_constraint constraint;
+ constraint.pos = pos;
+ constraint.constraint = new_id_from_str(buf);
+ constraint.mode = get_ir_mode_storage(expr->base.type);
+ tmp_in_constraints[in_size] = constraint;
+ ins[in_size] = value;
+
+ ++in_size;
+ }
-static void leave_statement_to_firm(leave_statement_t *statement) {
- errorf(&statement->base.source_position, "__leave not supported yet");
-}
+ out_exprs[out_size] = expr;
+ out_addrs[out_size] = addr;
+ ++out_size;
+ } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
+ /* pure memory ops need no input (but we have to make sure we
+ * attach to the memory) */
+ assert(! (asm_flags &
+ (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
+ | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
+ needs_memory = true;
-static void statement_to_firm(statement_t *statement)
-{
- switch(statement->kind) {
- case STATEMENT_INVALID:
- panic("invalid statement found");
- return;
- case STATEMENT_EMPTY:
- /* nothing */
- return;
- case STATEMENT_COMPOUND:
- compound_statement_to_firm(&statement->compound);
- return;
- case STATEMENT_RETURN:
- return_statement_to_firm(&statement->returns);
- return;
- case STATEMENT_EXPRESSION:
- expression_statement_to_firm(&statement->expression);
- return;
- case STATEMENT_IF:
- if_statement_to_firm(&statement->ifs);
- return;
- case STATEMENT_WHILE:
- while_statement_to_firm(&statement->whiles);
- return;
- case STATEMENT_DO_WHILE:
- do_while_statement_to_firm(&statement->do_while);
- return;
- case STATEMENT_DECLARATION:
- declaration_statement_to_firm(&statement->declaration);
- return;
- case STATEMENT_BREAK:
- create_jump_statement(statement, break_label);
- return;
- case STATEMENT_CONTINUE:
- create_jump_statement(statement, continue_label);
- return;
- case STATEMENT_SWITCH:
- switch_statement_to_firm(&statement->switchs);
- return;
- case STATEMENT_CASE_LABEL:
- case_label_to_firm(&statement->case_label);
- return;
- case STATEMENT_FOR:
- for_statement_to_firm(&statement->fors);
- return;
- case STATEMENT_LABEL:
- label_to_firm(&statement->label);
- return;
- case STATEMENT_GOTO:
- goto_to_firm(&statement->gotos);
- return;
- case STATEMENT_ASM:
- asm_statement_to_firm(&statement->asms);
- return;
- case STATEMENT_MS_TRY:
- ms_try_statement_to_firm(&statement->ms_try);
- return;
- case STATEMENT_LEAVE:
- leave_statement_to_firm(&statement->leave);
- return;
- }
- panic("Statement not implemented\n");
-}
+ /* we need to attach the address to the inputs */
+ expression_t *expr = argument->expression;
-static int count_decls_in_expression(const expression_t *expression);
+ ir_asm_constraint constraint;
+ constraint.pos = pos;
+ constraint.constraint = new_id_from_str(constraints);
+ constraint.mode = mode_M;
+ tmp_in_constraints[in_size] = constraint;
-static int count_local_declarations(const declaration_t * decl,
- const declaration_t *const end)
-{
- int count = 0;
- for (; decl != end; decl = decl->next) {
- if(decl->namespc != NAMESPACE_NORMAL)
+ ins[in_size] = expression_to_addr(expr);
+ ++in_size;
+ continue;
+ } else {
+ errorf(&statement->base.source_position,
+ "only modifiers but no place set in constraints '%s'",
+ constraints);
continue;
- const type_t *type = skip_typeref(decl->type);
- if (!decl->address_taken && is_type_scalar(type))
- ++count;
- const initializer_t *initializer = decl->init.initializer;
- /* FIXME: should walk initializer hierarchies... */
- if(initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
- count += count_decls_in_expression(initializer->value.value);
}
+
+ ir_asm_constraint constraint;
+ constraint.pos = pos;
+ constraint.constraint = new_id_from_str(constraints);
+ constraint.mode = get_ir_mode_storage(argument->expression->base.type);
+
+ obstack_grow(&asm_obst, &constraint, sizeof(constraint));
}
- return count;
-}
+ assert(obstack_object_size(&asm_obst)
+ == out_size * sizeof(ir_asm_constraint));
+ ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
-static int count_decls_in_expression(const expression_t *expression) {
- int count = 0;
- if(expression == NULL)
- return 0;
+ obstack_grow(&asm_obst, tmp_in_constraints,
+ in_size * sizeof(tmp_in_constraints[0]));
+ /* find and count input and output arguments */
+ argument = statement->inputs;
+ for ( ; argument != NULL; argument = argument->next) {
+ const char *constraints = argument->constraints.begin;
+ asm_constraint_flags_t asm_flags
+ = be_parse_asm_constraints(constraints);
- switch((expression_kind_t) expression->base.kind) {
- case EXPR_STATEMENT:
- return count_decls_in_stmts(expression->statement.statement);
- EXPR_BINARY_CASES {
- int count_left = count_decls_in_expression(expression->binary.left);
- int count_right = count_decls_in_expression(expression->binary.right);
- return count_left + count_right;
- }
- EXPR_UNARY_CASES
- return count_decls_in_expression(expression->unary.value);
- case EXPR_CALL: {
- call_argument_t *argument = expression->call.arguments;
- for( ; argument != NULL; argument = argument->next) {
- count += count_decls_in_expression(argument->expression);
+ if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
+ errorf(&statement->base.source_position,
+ "some constraints in '%s' are not supported", constraints);
+ continue;
}
- return count;
+ if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
+ errorf(&statement->base.source_position,
+ "some constraints in '%s' are invalid", constraints);
+ continue;
+ }
+ if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
+ errorf(&statement->base.source_position,
+ "write flag specified for input constraints '%s'",
+ constraints);
+ continue;
+ }
+
+ ir_node *input;
+ if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
+ || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
+ /* we can treat this as "normal" input */
+ input = expression_to_firm(argument->expression);
+ } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
+ /* pure memory ops need no input (but we have to make sure we
+ * attach to the memory) */
+ assert(! (asm_flags &
+ (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
+ | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
+ needs_memory = true;
+ input = expression_to_addr(argument->expression);
+ } else {
+ errorf(&statement->base.source_position,
+ "only modifiers but no place set in constraints '%s'",
+ constraints);
+ continue;
+ }
+
+ ir_asm_constraint constraint;
+ constraint.pos = next_pos++;
+ constraint.constraint = new_id_from_str(constraints);
+ constraint.mode = get_irn_mode(input);
+
+ obstack_grow(&asm_obst, &constraint, sizeof(constraint));
+ ins[in_size++] = input;
}
- case EXPR_UNKNOWN:
- case EXPR_INVALID:
- panic("unexpected expression kind");
+ if (needs_memory) {
+ ir_asm_constraint constraint;
+ constraint.pos = next_pos++;
+ constraint.constraint = new_id_from_str("");
+ constraint.mode = mode_M;
- case EXPR_COMPOUND_LITERAL:
- /* TODO... */
- break;
+ obstack_grow(&asm_obst, &constraint, sizeof(constraint));
+ ins[in_size++] = get_store();
+ }
- case EXPR_CONDITIONAL:
- count += count_decls_in_expression(expression->conditional.condition);
- count += count_decls_in_expression(expression->conditional.true_expression);
- count += count_decls_in_expression(expression->conditional.false_expression);
- return count;
+ assert(obstack_object_size(&asm_obst)
+ == in_size * sizeof(ir_asm_constraint));
+ ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
- case EXPR_BUILTIN_PREFETCH:
- count += count_decls_in_expression(expression->builtin_prefetch.adr);
- count += count_decls_in_expression(expression->builtin_prefetch.rw);
- count += count_decls_in_expression(expression->builtin_prefetch.locality);
- return count;
+ /* create asm node */
+ dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
- case EXPR_BUILTIN_CONSTANT_P:
- count += count_decls_in_expression(expression->builtin_constant.value);
- return count;
+ ident *asm_text = new_id_from_str(statement->asm_text.begin);
- case EXPR_SELECT:
- count += count_decls_in_expression(expression->select.compound);
- return count;
+ ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
+ out_size, output_constraints,
+ n_clobbers, clobbers, asm_text);
- case EXPR_ARRAY_ACCESS:
- count += count_decls_in_expression(expression->array_access.array_ref);
- count += count_decls_in_expression(expression->array_access.index);
- return count;
-
- case EXPR_CLASSIFY_TYPE:
- count += count_decls_in_expression(expression->classify_type.type_expression);
- return count;
-
- case EXPR_SIZEOF:
- case EXPR_ALIGNOF: {
- expression_t *tp_expression = expression->typeprop.tp_expression;
- if (tp_expression != NULL) {
- count += count_decls_in_expression(tp_expression);
- }
- return count;
+ if (statement->is_volatile) {
+ set_irn_pinned(node, op_pin_state_pinned);
+ } else {
+ set_irn_pinned(node, op_pin_state_floats);
}
- case EXPR_OFFSETOF:
- case EXPR_REFERENCE:
- case EXPR_CONST:
- case EXPR_CHARACTER_CONSTANT:
- case EXPR_WIDE_CHARACTER_CONSTANT:
- case EXPR_STRING_LITERAL:
- case EXPR_WIDE_STRING_LITERAL:
- case EXPR_FUNCNAME:
- case EXPR_BUILTIN_SYMBOL:
- case EXPR_VA_START:
- case EXPR_VA_ARG:
- break;
+ /* create output projs & connect them */
+ if (needs_memory) {
+ ir_node *projm = new_Proj(node, mode_M, out_size);
+ set_store(projm);
}
- /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
- * (or implement all the missing expressions here/implement a walker)
- */
+ size_t i;
+ for (i = 0; i < out_size; ++i) {
+ const expression_t *out_expr = out_exprs[i];
+ long pn = i;
+ ir_mode *mode = get_ir_mode_storage(out_expr->base.type);
+ ir_node *proj = new_Proj(node, mode, pn);
+ ir_node *addr = out_addrs[i];
- return 0;
+ set_value_for_expression_addr(out_expr, proj, addr);
+ }
+
+ return NULL;
}
-static int count_decls_in_stmts(const statement_t *stmt)
+static ir_node *ms_try_statement_to_firm(ms_try_statement_t *statement)
{
- int count = 0;
- for (; stmt != NULL; stmt = stmt->base.next) {
- switch (stmt->kind) {
- case STATEMENT_EMPTY:
- break;
-
- case STATEMENT_DECLARATION: {
- const declaration_statement_t *const decl_stmt = &stmt->declaration;
- count += count_local_declarations(decl_stmt->declarations_begin,
- decl_stmt->declarations_end->next);
- break;
- }
-
- case STATEMENT_COMPOUND: {
- const compound_statement_t *const comp =
- &stmt->compound;
- count += count_decls_in_stmts(comp->statements);
- break;
- }
-
- case STATEMENT_IF: {
- const if_statement_t *const if_stmt = &stmt->ifs;
- count += count_decls_in_expression(if_stmt->condition);
- count += count_decls_in_stmts(if_stmt->true_statement);
- count += count_decls_in_stmts(if_stmt->false_statement);
- break;
- }
+ statement_to_firm(statement->try_statement);
+ source_position_t const *const pos = &statement->base.source_position;
+ warningf(WARN_OTHER, pos, "structured exception handling ignored");
+ return NULL;
+}
- case STATEMENT_SWITCH: {
- const switch_statement_t *const switch_stmt = &stmt->switchs;
- count += count_decls_in_expression(switch_stmt->expression);
- count += count_decls_in_stmts(switch_stmt->body);
- break;
- }
+static ir_node *leave_statement_to_firm(leave_statement_t *statement)
+{
+ errorf(&statement->base.source_position, "__leave not supported yet");
+ return NULL;
+}
- case STATEMENT_LABEL: {
- const label_statement_t *const label_stmt = &stmt->label;
- if(label_stmt->statement != NULL) {
- count += count_decls_in_stmts(label_stmt->statement);
- }
- break;
- }
+/**
+ * Transform a statement.
+ */
+static ir_node *statement_to_firm(statement_t *const stmt)
+{
+#ifndef NDEBUG
+ assert(!stmt->base.transformed);
+ stmt->base.transformed = true;
+#endif
- case STATEMENT_WHILE: {
- const while_statement_t *const while_stmt = &stmt->whiles;
- count += count_decls_in_expression(while_stmt->condition);
- count += count_decls_in_stmts(while_stmt->body);
- break;
- }
+ switch (stmt->kind) {
+ case STATEMENT_ASM: return asm_statement_to_firm( &stmt->asms);
+ case STATEMENT_CASE_LABEL: return case_label_to_firm( &stmt->case_label);
+ case STATEMENT_COMPOUND: return compound_statement_to_firm( &stmt->compound);
+ case STATEMENT_COMPUTED_GOTO: return computed_goto_to_firm( &stmt->computed_goto);
+ case STATEMENT_DECLARATION: return declaration_statement_to_firm(&stmt->declaration);
+ case STATEMENT_DO_WHILE: return do_while_statement_to_firm( &stmt->do_while);
+ case STATEMENT_EMPTY: return NULL; /* nothing */
+ case STATEMENT_EXPRESSION: return expression_statement_to_firm( &stmt->expression);
+ case STATEMENT_FOR: return for_statement_to_firm( &stmt->fors);
+ case STATEMENT_IF: return if_statement_to_firm( &stmt->ifs);
+ case STATEMENT_LABEL: return label_to_firm( &stmt->label);
+ case STATEMENT_LEAVE: return leave_statement_to_firm( &stmt->leave);
+ case STATEMENT_MS_TRY: return ms_try_statement_to_firm( &stmt->ms_try);
+ case STATEMENT_RETURN: return return_statement_to_firm( &stmt->returns);
+ case STATEMENT_SWITCH: return switch_statement_to_firm( &stmt->switchs);
+ case STATEMENT_WHILE: return while_statement_to_firm( &stmt->whiles);
- case STATEMENT_DO_WHILE: {
- const do_while_statement_t *const do_while_stmt = &stmt->do_while;
- count += count_decls_in_expression(do_while_stmt->condition);
- count += count_decls_in_stmts(do_while_stmt->body);
- break;
- }
+ case STATEMENT_BREAK: return create_jump_statement(stmt, get_break_label());
+ case STATEMENT_CONTINUE: return create_jump_statement(stmt, continue_label);
+ case STATEMENT_GOTO: return create_jump_statement(stmt, get_label_block(stmt->gotos.label));
- case STATEMENT_FOR: {
- const for_statement_t *const for_stmt = &stmt->fors;
- count += count_local_declarations(for_stmt->scope.declarations, NULL);
- count += count_decls_in_expression(for_stmt->initialisation);
- count += count_decls_in_expression(for_stmt->condition);
- count += count_decls_in_expression(for_stmt->step);
- count += count_decls_in_stmts(for_stmt->body);
- break;
- }
+ case STATEMENT_ERROR: panic("error statement found");
+ }
+ panic("statement not implemented");
+}
- case STATEMENT_CASE_LABEL: {
- const case_label_statement_t *label = &stmt->case_label;
- count += count_decls_in_expression(label->expression);
- if(label->statement != NULL) {
- count += count_decls_in_stmts(label->statement);
- }
- break;
- }
+static int count_local_variables(const entity_t *entity,
+ const entity_t *const last)
+{
+ int count = 0;
+ entity_t const *const end = last != NULL ? last->base.next : NULL;
+ for (; entity != end; entity = entity->base.next) {
+ type_t *type;
+ bool address_taken;
+
+ if (entity->kind == ENTITY_VARIABLE) {
+ type = skip_typeref(entity->declaration.type);
+ address_taken = entity->variable.address_taken;
+ } else if (entity->kind == ENTITY_PARAMETER) {
+ type = skip_typeref(entity->declaration.type);
+ address_taken = entity->parameter.address_taken;
+ } else {
+ continue;
+ }
- case STATEMENT_ASM:
- case STATEMENT_BREAK:
- case STATEMENT_CONTINUE:
- break;
+ if (!address_taken && is_type_scalar(type))
+ ++count;
+ }
+ return count;
+}
- case STATEMENT_EXPRESSION: {
- const expression_statement_t *expr_stmt = &stmt->expression;
- count += count_decls_in_expression(expr_stmt->expression);
- break;
- }
+static void count_local_variables_in_stmt(statement_t *stmt, void *const env)
+{
+ int *const count = env;
- case STATEMENT_GOTO:
- case STATEMENT_LEAVE:
- case STATEMENT_INVALID:
- break;
+ switch (stmt->kind) {
+ case STATEMENT_DECLARATION: {
+ const declaration_statement_t *const decl_stmt = &stmt->declaration;
+ *count += count_local_variables(decl_stmt->declarations_begin,
+ decl_stmt->declarations_end);
+ break;
+ }
- case STATEMENT_RETURN: {
- const return_statement_t *ret_stmt = &stmt->returns;
- count += count_decls_in_expression(ret_stmt->value);
- break;
- }
+ case STATEMENT_FOR:
+ *count += count_local_variables(stmt->fors.scope.entities, NULL);
+ break;
- case STATEMENT_MS_TRY: {
- const ms_try_statement_t *const try_stmt = &stmt->ms_try;
- count += count_decls_in_stmts(try_stmt->try_statement);
- if(try_stmt->except_expression != NULL)
- count += count_decls_in_expression(try_stmt->except_expression);
- count += count_decls_in_stmts(try_stmt->final_statement);
- break;
- }
- }
+ default:
+ break;
}
- return count;
}
-static int get_function_n_local_vars(declaration_t *declaration)
+/**
+ * Return the number of local (alias free) variables used by a function.
+ */
+static int get_function_n_local_vars(entity_t *entity)
{
+ const function_t *function = &entity->function;
int count = 0;
/* count parameters */
- count += count_local_declarations(declaration->scope.declarations, NULL);
+ count += count_local_variables(function->parameters.entities, NULL);
/* count local variables declared in body */
- count += count_decls_in_stmts(declaration->init.statement);
-
+ walk_statements(function->statement, count_local_variables_in_stmt, &count);
return count;
}
-static void initialize_function_parameters(declaration_t *declaration)
+/**
+ * Build Firm code for the parameters of a function.
+ */
+static void initialize_function_parameters(entity_t *entity)
{
- ir_graph *irg = current_ir_graph;
- ir_node *args = get_irg_args(irg);
- ir_node *start_block = get_irg_start_block(irg);
- ir_type *function_irtype = get_ir_type(declaration->type);
+ assert(entity->kind == ENTITY_FUNCTION);
+ ir_graph *irg = current_ir_graph;
+ ir_node *args = get_irg_args(irg);
+ int n = 0;
+ ir_type *function_irtype;
+
+ if (entity->function.need_closure) {
+ /* add an extra parameter for the static link */
+ entity->function.static_link = new_r_Proj(args, mode_P_data, 0);
+ ++n;
+
+ /* Matze: IMO this is wrong, nested functions should have an own
+ * type and not rely on strange parameters... */
+ function_irtype = create_method_type(&entity->declaration.type->function, true);
+ } else {
+ function_irtype = get_ir_type(entity->declaration.type);
+ }
+
- int n = 0;
- declaration_t *parameter = declaration->scope.declarations;
- for( ; parameter != NULL; parameter = parameter->next, ++n) {
- assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
- type_t *type = skip_typeref(parameter->type);
- bool needs_entity = parameter->address_taken;
+ entity_t *parameter = entity->function.parameters.entities;
+ for ( ; parameter != NULL; parameter = parameter->base.next, ++n) {
+ if (parameter->kind != ENTITY_PARAMETER)
+ continue;
+
+ assert(parameter->declaration.kind == DECLARATION_KIND_UNKNOWN);
+ type_t *type = skip_typeref(parameter->declaration.type);
+
+ bool needs_entity = parameter->parameter.address_taken;
assert(!is_type_array(type));
- if(is_type_compound(type)) {
+ if (is_type_compound(type)) {
needs_entity = true;
}
- if(needs_entity) {
- ir_entity *entity = get_method_value_param_ent(function_irtype, n);
- ident *id = new_id_from_str(parameter->symbol->string);
- set_entity_ident(entity, id);
-
- parameter->declaration_kind
- = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
- parameter->v.entity = entity;
+ ir_type *param_irtype = get_method_param_type(function_irtype, n);
+ if (needs_entity) {
+ ir_type *frame_type = get_irg_frame_type(irg);
+ ir_entity *param
+ = new_parameter_entity(frame_type, n, param_irtype);
+ parameter->declaration.kind
+ = DECLARATION_KIND_PARAMETER_ENTITY;
+ parameter->parameter.v.entity = param;
continue;
}
- ir_mode *mode = get_ir_mode(parameter->type);
- long pn = n;
- ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
+ ir_mode *param_mode = get_type_mode(param_irtype);
+ long pn = n;
+ ir_node *value = new_r_Proj(args, param_mode, pn);
- parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
- parameter->v.value_number = next_value_number_function;
- set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
+ ir_mode *mode = get_ir_mode_storage(type);
+ value = create_conv(NULL, value, mode);
+ value = do_strict_conv(NULL, value);
+
+ parameter->declaration.kind = DECLARATION_KIND_PARAMETER;
+ parameter->parameter.v.value_number = next_value_number_function;
+ set_irg_loc_description(current_ir_graph, next_value_number_function,
+ parameter);
++next_value_number_function;
- set_value(parameter->v.value_number, proj);
+ set_value(parameter->parameter.v.value_number, value);
}
}
* @param irg the IR-graph
* @param dec_modifiers additional modifiers
*/
-static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
+static void handle_decl_modifier_irg(ir_graph *irg,
+ decl_modifiers_t decl_modifiers)
{
- if (decl_modifiers & DM_NORETURN) {
- /* TRUE if the declaration includes the Microsoft
- __declspec(noreturn) specifier. */
- set_irg_additional_property(irg, mtp_property_noreturn);
- }
- if (decl_modifiers & DM_NOTHROW) {
- /* TRUE if the declaration includes the Microsoft
- __declspec(nothrow) specifier. */
- set_irg_additional_property(irg, mtp_property_nothrow);
- }
if (decl_modifiers & DM_NAKED) {
/* TRUE if the declaration includes the Microsoft
__declspec(naked) specifier. */
- set_irg_additional_property(irg, mtp_property_naked);
+ add_irg_additional_properties(irg, mtp_property_naked);
}
if (decl_modifiers & DM_FORCEINLINE) {
/* TRUE if the declaration includes the
}
}
-static void create_function(declaration_t *declaration)
+static void add_function_pointer(ir_type *segment, ir_entity *method,
+ const char *unique_template)
+{
+ ir_type *method_type = get_entity_type(method);
+ ir_type *ptr_type = new_type_pointer(method_type);
+
+ /* these entities don't really have a name but firm only allows
+ * "" in ld_ident.
+ * Note that we mustn't give these entities a name since for example
+ * Mach-O doesn't allow them. */
+ ident *ide = id_unique(unique_template);
+ ir_entity *ptr = new_entity(segment, ide, ptr_type);
+ ir_graph *irg = get_const_code_irg();
+ ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
+ method);
+
+ set_entity_ld_ident(ptr, new_id_from_chars("", 0));
+ set_entity_compiler_generated(ptr, 1);
+ set_entity_visibility(ptr, ir_visibility_private);
+ add_entity_linkage(ptr, IR_LINKAGE_CONSTANT|IR_LINKAGE_HIDDEN_USER);
+ set_atomic_ent_value(ptr, val);
+}
+
+/**
+ * Generate possible IJmp branches to a given label block.
+ */
+static void gen_ijmp_branches(ir_node *block)
+{
+ ir_node *ijmp;
+ for (ijmp = ijmp_list; ijmp != NULL; ijmp = get_irn_link(ijmp)) {
+ add_immBlock_pred(block, ijmp);
+ }
+}
+
+/**
+ * Create code for a function and all inner functions.
+ *
+ * @param entity the function entity
+ */
+static void create_function(entity_t *entity)
{
- ir_entity *function_entity = get_function_entity(declaration);
+ assert(entity->kind == ENTITY_FUNCTION);
+ ir_entity *function_entity = get_function_entity(entity, current_outer_frame);
- if(declaration->init.statement == NULL)
+ if (entity->function.statement == NULL)
return;
- current_function_decl = declaration;
- current_function_name = NULL;
- current_funcsig = NULL;
+ inner_functions = NULL;
+ current_trampolines = NULL;
- assert(imature_blocks == NULL);
- imature_blocks = NEW_ARR_F(ir_node*, 0);
+ if (entity->declaration.modifiers & DM_CONSTRUCTOR) {
+ ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
+ add_function_pointer(segment, function_entity, "constructor_ptr.%u");
+ }
+ if (entity->declaration.modifiers & DM_DESTRUCTOR) {
+ ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
+ add_function_pointer(segment, function_entity, "destructor_ptr.%u");
+ }
+
+ current_function_entity = entity;
+ current_function_name = NULL;
+ current_funcsig = NULL;
+
+ assert(all_labels == NULL);
+ all_labels = NEW_ARR_F(label_t *, 0);
+ ijmp_list = NULL;
- int n_local_vars = get_function_n_local_vars(declaration);
+ int n_local_vars = get_function_n_local_vars(entity);
ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
- ir_node *first_block = get_cur_block();
+ current_ir_graph = irg;
+
+ ir_graph *old_current_function = current_function;
+ current_function = irg;
+
+ ir_entity *const old_current_vararg_entity = current_vararg_entity;
+ current_vararg_entity = NULL;
+
+ set_irg_fp_model(irg, firm_fp_model);
+ tarval_enable_fp_ops(1);
+ set_irn_dbg_info(get_irg_start_block(irg),
+ get_entity_dbg_info(function_entity));
/* set inline flags */
- if (declaration->is_inline)
- set_irg_inline_property(irg, irg_inline_recomended);
- handle_decl_modifier_irg(irg, declaration->modifiers);
+ if (entity->function.is_inline)
+ set_irg_inline_property(irg, irg_inline_recomended);
+ handle_decl_modifier_irg(irg, entity->declaration.modifiers);
next_value_number_function = 0;
- initialize_function_parameters(declaration);
+ initialize_function_parameters(entity);
+ current_static_link = entity->function.static_link;
- statement_to_firm(declaration->init.statement);
+ statement_to_firm(entity->function.statement);
ir_node *end_block = get_irg_end_block(irg);
/* do we have a return statement yet? */
- if(get_cur_block() != NULL) {
- type_t *type = skip_typeref(declaration->type);
+ if (currently_reachable()) {
+ type_t *type = skip_typeref(entity->declaration.type);
assert(is_type_function(type));
- const function_type_t *func_type = &type->function;
- const type_t *return_type
- = skip_typeref(func_type->return_type);
+ type_t *const return_type = skip_typeref(type->function.return_type);
ir_node *ret;
- if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
+ if (is_type_void(return_type)) {
ret = new_Return(get_store(), 0, NULL);
} else {
- ir_mode *mode;
- if(is_type_scalar(return_type)) {
- mode = get_ir_mode(func_type->return_type);
- } else {
- mode = mode_P_data;
- }
+ ir_mode *const mode = get_ir_mode_storage(return_type);
ir_node *in[1];
/* ยง5.1.2.2.3 main implicitly returns 0 */
- if (strcmp(declaration->symbol->string, "main") == 0) {
- in[0] = new_Const(mode, get_mode_null(mode));
+ if (is_main(entity)) {
+ in[0] = new_Const(get_mode_null(mode));
} else {
in[0] = new_Unknown(mode);
}
add_immBlock_pred(end_block, ret);
}
- for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
- mature_immBlock(imature_blocks[i]);
+ for (int i = ARR_LEN(all_labels) - 1; i >= 0; --i) {
+ label_t *label = all_labels[i];
+ if (label->address_taken) {
+ gen_ijmp_branches(label->block);
+ }
+ mature_immBlock(label->block);
}
- DEL_ARR_F(imature_blocks);
- imature_blocks = NULL;
- mature_immBlock(first_block);
- mature_immBlock(end_block);
+ DEL_ARR_F(all_labels);
+ all_labels = NULL;
irg_finalize_cons(irg);
int n = get_compound_n_members(frame_type);
int align_all = 4;
int offset = 0;
- for(int i = 0; i < n; ++i) {
- ir_entity *entity = get_compound_member(frame_type, i);
- ir_type *entity_type = get_entity_type(entity);
+ for (int i = 0; i < n; ++i) {
+ ir_entity *member = get_compound_member(frame_type, i);
+ ir_type *entity_type = get_entity_type(member);
int align = get_type_alignment_bytes(entity_type);
- if(align > align_all)
+ if (align > align_all)
align_all = align;
int misalign = 0;
- if(align > 0) {
+ if (align > 0) {
misalign = offset % align;
- if(misalign > 0) {
+ if (misalign > 0) {
offset += align - misalign;
}
}
- set_entity_offset(entity, offset);
+ set_entity_offset(member, offset);
offset += get_type_size_bytes(entity_type);
}
set_type_size_bytes(frame_type, offset);
set_type_alignment_bytes(frame_type, align_all);
- irg_vrfy(irg);
+ irg_verify(irg, VERIFY_ENFORCE_SSA);
+ current_vararg_entity = old_current_vararg_entity;
+ current_function = old_current_function;
+
+ if (current_trampolines != NULL) {
+ DEL_ARR_F(current_trampolines);
+ current_trampolines = NULL;
+ }
+
+ /* create inner functions if any */
+ entity_t **inner = inner_functions;
+ if (inner != NULL) {
+ ir_type *rem_outer_frame = current_outer_frame;
+ current_outer_frame = get_irg_frame_type(current_ir_graph);
+ for (int i = ARR_LEN(inner) - 1; i >= 0; --i) {
+ create_function(inner[i]);
+ }
+ DEL_ARR_F(inner);
+
+ current_outer_frame = rem_outer_frame;
+ }
}
static void scope_to_firm(scope_t *scope)
{
/* first pass: create declarations */
- declaration_t *declaration = scope->declarations;
- for( ; declaration != NULL; declaration = declaration->next) {
- if(declaration->namespc != NAMESPACE_NORMAL)
- continue;
- if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
- || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
- continue;
- if(declaration->symbol == NULL)
+ entity_t *entity = scope->entities;
+ for ( ; entity != NULL; entity = entity->base.next) {
+ if (entity->base.symbol == NULL)
continue;
- type_t *type = skip_typeref(declaration->type);
- if(is_type_function(type)) {
- get_function_entity(declaration);
- } else {
- create_global_variable(declaration);
+ if (entity->kind == ENTITY_FUNCTION) {
+ if (entity->function.btk != BUILTIN_NONE) {
+ /* builtins have no representation */
+ continue;
+ }
+ (void)get_function_entity(entity, NULL);
+ } else if (entity->kind == ENTITY_VARIABLE) {
+ create_global_variable(entity);
+ } else if (entity->kind == ENTITY_NAMESPACE) {
+ scope_to_firm(&entity->namespacee.members);
}
}
/* second pass: create code/initializers */
- declaration = scope->declarations;
- for( ; declaration != NULL; declaration = declaration->next) {
- if(declaration->namespc != NAMESPACE_NORMAL)
- continue;
- if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
- || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
- continue;
- if(declaration->symbol == NULL)
+ entity = scope->entities;
+ for ( ; entity != NULL; entity = entity->base.next) {
+ if (entity->base.symbol == NULL)
continue;
- type_t *type = declaration->type;
- if(type->kind == TYPE_FUNCTION) {
- create_function(declaration);
- } else {
- assert(declaration->declaration_kind
+ if (entity->kind == ENTITY_FUNCTION) {
+ if (entity->function.btk != BUILTIN_NONE) {
+ /* builtins have no representation */
+ continue;
+ }
+ create_function(entity);
+ } else if (entity->kind == ENTITY_VARIABLE) {
+ assert(entity->declaration.kind
== DECLARATION_KIND_GLOBAL_VARIABLE);
current_ir_graph = get_const_code_irg();
- create_declaration_initializer(declaration);
+ create_variable_initializer(entity);
}
}
}
obstack_init(&asm_obst);
init_atomic_modes();
+ ir_set_debug_retrieve(dbg_retrieve);
+ ir_set_type_debug_retrieve(dbg_print_type_dbg_info);
+
/* create idents for all known runtime functions */
- for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
- predef_idents[rts_data[i].id] = new_id_from_str(rts_data[i].name);
+ for (size_t i = 0; i < lengthof(rts_data); ++i) {
+ rts_idents[i] = new_id_from_str(rts_data[i].name);
}
+
+ entitymap_init(&entitymap);
}
static void init_ir_types(void)
{
static int ir_types_initialized = 0;
- if(ir_types_initialized)
+ if (ir_types_initialized)
return;
ir_types_initialized = 1;
- type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
- type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
- type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
-
- ir_type_int = get_ir_type(type_int);
+ ir_type_char = get_ir_type(type_char);
ir_type_const_char = get_ir_type(type_const_char);
ir_type_wchar_t = get_ir_type(type_wchar_t);
- ir_type_void = get_ir_type(type_void);
+
+ be_params = be_get_backend_param();
+ mode_float_arithmetic = be_params->mode_float_arithmetic;
+
+ stack_param_align = be_params->stack_param_align;
}
void exit_ast2firm(void)
{
+ entitymap_destroy(&entitymap);
obstack_free(&asm_obst, NULL);
}
+static void global_asm_to_firm(statement_t *s)
+{
+ for (; s != NULL; s = s->base.next) {
+ assert(s->kind == STATEMENT_ASM);
+
+ char const *const text = s->asms.asm_text.begin;
+ size_t size = s->asms.asm_text.size;
+
+ /* skip the last \0 */
+ if (text[size - 1] == '\0')
+ --size;
+
+ ident *const id = new_id_from_chars(text, size);
+ add_irp_asm(id);
+ }
+}
+
+static const char *get_cwd(void)
+{
+ static char buf[1024];
+ if (buf[0] == '\0')
+ getcwd(buf, sizeof(buf));
+ return buf;
+}
+
void translation_unit_to_firm(translation_unit_t *unit)
{
+ if (c_mode & _CXX) {
+ be_dwarf_set_source_language(DW_LANG_C_plus_plus);
+ } else if (c_mode & _C99) {
+ be_dwarf_set_source_language(DW_LANG_C99);
+ } else if (c_mode & _C89) {
+ be_dwarf_set_source_language(DW_LANG_C89);
+ } else {
+ be_dwarf_set_source_language(DW_LANG_C);
+ }
+ be_dwarf_set_compilation_directory(get_cwd());
+
+ /* initialize firm arithmetic */
+ tarval_set_integer_overflow_mode(TV_OVERFLOW_WRAP);
+ ir_set_uninitialized_local_variable_func(uninitialized_local_var);
+
/* just to be sure */
- continue_label = NULL;
- break_label = NULL;
- current_switch_cond = NULL;
+ continue_label = NULL;
+ break_label = NULL;
+ current_switch = NULL;
+ current_translation_unit = unit;
init_ir_types();
scope_to_firm(&unit->scope);
+ global_asm_to_firm(unit->global_asm);
+
+ current_ir_graph = NULL;
+ current_translation_unit = NULL;
}