+/*
+ * This file is part of cparser.
+ * Copyright (C) 2007-2008 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
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
#include <config.h>
-#define _GNU_SOURCE
-
#include <assert.h>
#include <string.h>
#include <stdbool.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 "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 "walk_statements.h"
+#include "warning.h"
+#include "entitymap_t.h"
#include "driver/firm_opt.h"
#include "driver/firm_cmdline.h"
-#define MAGIC_DEFAULT_PN_NUMBER (long) -314159265
+/* some idents needed for name mangling */
+static ident *id_underscore;
+static ident *id_imp;
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;
-static type_t *type_const_char;
-static type_t *type_void;
-static type_t *type_int;
+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 label_t **all_labels;
+static entity_t **inner_functions;
+static ir_node *ijmp_list;
+static bool constant_folding;
+
+extern bool have_const_functions;
-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 const entity_t *current_function_entity;
+static ir_node *current_function_name;
+static ir_node *current_funcsig;
+static switch_statement_t *current_switch;
+static ir_graph *current_function;
-static const declaration_t *current_function_decl;
-static ir_node *current_function_name;
+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_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);
+
+static void enqueue_inner_function(entity_t *entity)
+{
+ ARR_APP1(entity_t*, inner_functions, entity);
+}
+
+static entity_t *next_inner_function(void)
+{
+ int len = ARR_LEN(inner_functions);
+ if (len == 0)
+ return NULL;
+
+ entity_t *entity = inner_functions[len-1];
+ ARR_SHRINKLEN(inner_functions, len-1);
+
+ return entity;
+}
ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
{
- const declaration_t *declaration = get_irg_loc_description(irg, pos);
+ const variable_t *variable = get_irg_loc_description(irg, pos);
- warningf(declaration->source_position, "variable '%#T' might be used uninitialized",
- declaration->type, declaration->symbol);
+ if (variable != NULL) {
+ warningf(&variable->base.base.source_position,
+ "variable '%#T' might be used uninitialized",
+ variable->base.type, variable->base.base.symbol);
+ }
return new_r_Unknown(irg, mode);
}
unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
{
const source_position_t *pos = (const source_position_t*) dbg;
- if(pos == NULL)
+ if (pos == NULL)
return 0;
return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
pos->linenr);
const char *dbg_retrieve(const dbg_info *dbg, unsigned *line)
{
const source_position_t *pos = (const source_position_t*) dbg;
- if(pos == NULL)
+ if (pos == NULL)
return NULL;
- if(line != NULL)
+ if (line != NULL)
*line = pos->linenr;
return pos->input_name;
}
return (dbg_info*) pos;
}
-static unsigned unique_id = 0;
+static ir_mode *_atomic_modes[ATOMIC_TYPE_LAST+1];
-static ident *unique_ident(const char *tag)
-{
- char buf[256];
+static ir_mode *mode_int, *mode_uint;
- snprintf(buf, sizeof(buf), "%s.%u", tag, unique_id);
- unique_id++;
- return new_id_from_str(buf);
-}
+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);
-/**
- * Return the signed integer mode of size bytes.
- *
- * @param size the size
- */
-static ir_mode *get_smode(unsigned size)
+static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind)
{
- static ir_mode *s_modes[16 + 1] = {0, };
- ir_mode *res;
-
- if (size <= 0 || size > 16)
- return NULL;
-
- res = s_modes[size];
- if (res == NULL) {
- unsigned bits;
- char name[32];
-
- bits = size * 8;
- snprintf(name, sizeof(name), "i%u", bits);
- res = new_ir_mode(name, irms_int_number, bits, 1, irma_twos_complement,
- bits <= machine_size ? machine_size : bits );
-
- s_modes[size] = res;
+ 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)) {
+ char name[64];
+ ir_mode_sort sort;
+ unsigned bit_size = size * 8;
+ bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0;
+ ir_mode_arithmetic arithmetic;
+ unsigned modulo_shift;
+
+ if (flags & ATOMIC_TYPE_FLAG_INTEGER) {
+ assert(! (flags & ATOMIC_TYPE_FLAG_FLOAT));
+ snprintf(name, sizeof(name), "i%s%u", 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%u", 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);
}
- return res;
-}
-
-/**
- * Return the unsigned integer mode of size bytes.
- *
- * @param size the size
- */
-static ir_mode *get_umode(unsigned size)
-{
- static ir_mode *u_modes[16 + 1] = {0, };
- ir_mode *res;
-
- if (size <= 0 || size > 16)
- return NULL;
- res = u_modes[size];
- if (res == NULL) {
- unsigned bits;
- char name[32];
-
- bits = size * 8;
- snprintf(name, sizeof(name), "u%u", bits);
- res = new_ir_mode(name, irms_int_number, bits, 0, irma_twos_complement,
- bits <= machine_size ? machine_size : bits );
-
- u_modes[size] = res;
- }
- return res;
+ return NULL;
}
/**
- * Return the pointer mode of size bytes.
- *
- * @param size the size
+ * Initialises the atomic modes depending on the machine size.
*/
-static ir_mode *get_ptrmode(unsigned size, char *name)
+static void init_atomic_modes(void)
{
- static ir_mode *p_modes[16 + 1] = {0, };
- ir_mode *res;
-
- if (size <= 0 || size > 16)
- return NULL;
-
- res = p_modes[size];
- if (res == NULL) {
- unsigned bits;
- char buf[32];
-
- bits = size * 8;
- if (name == NULL) {
- snprintf(buf, sizeof(buf), "p%u", bits);
- name = buf;
- }
- res = new_ir_mode(name, irms_reference, bits, 0, irma_twos_complement,
- bits <= machine_size ? machine_size : bits);
-
- p_modes[size] = res;
-
- set_reference_mode_signed_eq(res, get_smode(size));
- set_reference_mode_unsigned_eq(res, get_umode(size));
+ for (int i = 0; i <= ATOMIC_TYPE_LAST; ++i) {
+ _atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i);
}
- return res;
-}
-
-static ir_mode *_atomic_modes[ATOMIC_TYPE_LAST];
-
-static ir_mode *mode_int, *mode_uint;
-
-/**
- * Initialises the atomic modes depending on the machine size.
- */
-static void init_atomic_modes(void) {
- unsigned int_size = machine_size < 32 ? 2 : 4;
- unsigned long_size = machine_size < 64 ? 4 : 8;
- unsigned llong_size = machine_size < 32 ? 4 : 8;
-
- /* firm has no real void... */
- _atomic_modes[ATOMIC_TYPE_VOID] = mode_T;
- _atomic_modes[ATOMIC_TYPE_CHAR] = char_is_signed ? get_smode(1) : get_umode(1);
- _atomic_modes[ATOMIC_TYPE_SCHAR] = get_smode(1);
- _atomic_modes[ATOMIC_TYPE_UCHAR] = get_umode(1);
- _atomic_modes[ATOMIC_TYPE_SHORT] = get_smode(2);
- _atomic_modes[ATOMIC_TYPE_USHORT] = get_umode(2);
- _atomic_modes[ATOMIC_TYPE_INT] = get_smode(int_size);
- _atomic_modes[ATOMIC_TYPE_UINT] = get_umode(int_size);
- _atomic_modes[ATOMIC_TYPE_LONG] = get_smode(long_size);
- _atomic_modes[ATOMIC_TYPE_ULONG] = get_umode(long_size);
- _atomic_modes[ATOMIC_TYPE_LONGLONG] = get_smode(llong_size);
- _atomic_modes[ATOMIC_TYPE_ULONGLONG] = get_umode(llong_size);
- _atomic_modes[ATOMIC_TYPE_FLOAT] = mode_F;
- _atomic_modes[ATOMIC_TYPE_DOUBLE] = mode_D;
- _atomic_modes[ATOMIC_TYPE_LONG_DOUBLE] = mode_E;
- _atomic_modes[ATOMIC_TYPE_BOOL] = get_umode(int_size);
-
-#ifdef PROVIDE_COMPLEX
- _atomic_modes[ATOMIC_TYPE_BOOL] = _atomic_modes[ATOMIC_TYPE_INT];
- _atomic_modes[ATOMIC_TYPE_FLOAT_IMAGINARY] = _atomic_modes[ATOMIC_TYPE_FLOAT];
- _atomic_modes[ATOMIC_TYPE_DOUBLE_IMAGINARY] = _atomic_modes[ATOMIC_TYPE_DOUBLE];
- _atomic_modes[ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY] = _atomic_modes[ATOMIC_TYPE_LONG_DOUBLE];
-#endif
-
- /* Hmm, pointers should be machine size */
- set_modeP_data(get_ptrmode(machine_size >> 3, NULL));
- set_modeP_code(get_ptrmode(machine_size >> 3, NULL));
-
mode_int = _atomic_modes[ATOMIC_TYPE_INT];
mode_uint = _atomic_modes[ATOMIC_TYPE_UINT];
-}
-
-static ir_mode *get_atomic_mode(const atomic_type_t* atomic_type)
-{
- ir_mode *res = NULL;
- if ((unsigned)atomic_type->akind < (unsigned)ATOMIC_TYPE_LAST)
- res = _atomic_modes[(unsigned)atomic_type->akind];
- if (res == NULL)
- panic("Encountered unknown atomic type");
- return res;
-}
-
-static unsigned get_type_size(type_t *type);
-
-static unsigned get_atomic_type_size(const atomic_type_t *type)
-{
- switch(type->akind) {
- case ATOMIC_TYPE_CHAR:
- case ATOMIC_TYPE_SCHAR:
- case ATOMIC_TYPE_UCHAR:
- return 1;
- case ATOMIC_TYPE_SHORT:
- case ATOMIC_TYPE_USHORT:
- return 2;
+ /* there's no real void type in firm */
+ _atomic_modes[ATOMIC_TYPE_VOID] = mode_int;
- case ATOMIC_TYPE_BOOL:
- case ATOMIC_TYPE_INT:
- case ATOMIC_TYPE_UINT:
- return machine_size >> 3;
+ /* initialize pointer modes */
+ char name[64];
+ ir_mode_sort sort = irms_reference;
+ unsigned bit_size = machine_size;
+ bool is_signed = 0;
+ ir_mode_arithmetic arithmetic = irma_twos_complement;
+ unsigned modulo_shift
+ = bit_size < machine_size ? machine_size : bit_size;
- case ATOMIC_TYPE_LONG:
- case ATOMIC_TYPE_ULONG:
- return machine_size > 16 ? machine_size >> 3 : 4;
+ snprintf(name, sizeof(name), "p%u", machine_size);
+ ir_mode *ptr_mode = new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
+ modulo_shift);
- case ATOMIC_TYPE_LONGLONG:
- case ATOMIC_TYPE_ULONGLONG:
- return machine_size > 16 ? 8 : 4;
+ set_reference_mode_signed_eq(ptr_mode, _atomic_modes[get_intptr_kind()]);
+ set_reference_mode_unsigned_eq(ptr_mode, _atomic_modes[get_uintptr_kind()]);
- case ATOMIC_TYPE_FLOAT:
- return 4;
-
- case ATOMIC_TYPE_DOUBLE:
- return 8;
-
- case ATOMIC_TYPE_LONG_DOUBLE:
- return 12;
-
- case ATOMIC_TYPE_VOID:
- return 1;
-
- case ATOMIC_TYPE_INVALID:
- case ATOMIC_TYPE_LAST:
- break;
- }
- panic("Trying to determine size of invalid atomic type");
+ /* 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)
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(type_t *type)
+static unsigned get_type_size_const(type_t *type)
{
- type = skip_typeref(type);
-
switch(type->kind) {
case TYPE_ERROR:
- panic("error type occured");
+ panic("error type occurred");
case TYPE_ATOMIC:
- return get_atomic_type_size(&type->atomic);
+ return get_atomic_type_size(type->atomic.akind);
+ case TYPE_COMPLEX:
+ return 2 * get_atomic_type_size(type->complex.akind);
+ case TYPE_IMAGINARY:
+ return get_atomic_type_size(type->imaginary.akind);
case TYPE_ENUM:
return get_mode_size_bytes(mode_int);
case TYPE_COMPOUND_UNION:
case TYPE_ARRAY:
return get_array_type_size(&type->array);
case TYPE_BUILTIN:
- return get_type_size(type->builtin.real_type);
+ return get_type_size_const(type->builtin.real_type);
case TYPE_BITFIELD:
panic("type size of bitfield request");
case TYPE_TYPEDEF:
panic("Trying to determine size of invalid type");
}
+static ir_node *get_type_size(type_t *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_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);
+}
+
static unsigned count_parameters(const function_type_t *function_type)
{
unsigned count = 0;
return count;
}
+/**
+ * Creates a Firm type for an atomic type
+ */
+static ir_type *create_atomic_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);
+ ir_type *irtype = new_type_primitive(id, mode);
+ set_type_alignment_bytes(irtype, type->base.alignment);
+ return irtype;
+}
-static long fold_constant(const expression_t *expression);
+/**
+ * Creates a Firm type for a complex type
+ */
+static ir_type *create_complex_type(const complex_type_t *type)
+{
+ atomic_type_kind_t kind = type->akind;
+ ir_mode *mode = _atomic_modes[kind];
+ ident *id = get_mode_ident(mode);
-static ir_type *create_atomic_type(const atomic_type_t *type)
+ (void) id;
+
+ /* FIXME: finish the array */
+ return NULL;
+}
+
+/**
+ * Creates a Firm type for an imaginary type
+ */
+static ir_type *create_imaginary_type(const imaginary_type_t *type)
{
- ir_mode *mode = get_atomic_mode(type);
- ident *id = get_mode_ident(mode);
- ir_type *irtype = new_type_primitive(id, mode);
+ atomic_type_kind_t kind = type->akind;
+ ir_mode *mode = _atomic_modes[kind];
+ ident *id = get_mode_ident(mode);
+ ir_type *irtype = new_type_primitive(id, mode);
- if(type->akind == ATOMIC_TYPE_LONG_DOUBLE
- || type->akind == ATOMIC_TYPE_DOUBLE) {
- set_type_alignment_bytes(irtype, 4);
- }
+ set_type_alignment_bytes(irtype, type->base.alignment);
return irtype;
}
+/**
+ * return type of a parameter (and take transparent union gnu extension into
+ * account)
+ */
+static type_t *get_parameter_type(type_t *type)
+{
+ type = skip_typeref(type);
+ if (type->base.modifiers & TYPE_MODIFIER_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)
{
- type_t *return_type = function_type->return_type;
+ type_t *return_type = skip_typeref(function_type->return_type);
- ident *id = unique_ident("functiontype");
+ ident *id = id_unique("functiontype.%u");
int n_parameters = count_parameters(function_type);
int n_results = return_type == type_void ? 0 : 1;
ir_type *irtype = new_type_method(id, n_parameters, n_results);
- if(return_type != type_void) {
+ if (return_type != type_void) {
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);
+ 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) {
+ if (function_type->variadic || function_type->unspecified_parameters) {
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 (function_type->variadic || function_type->unspecified_parameters)
+ 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 (function_type->variadic || function_type->unspecified_parameters)
+ 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;
+ }
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
- */
- ir_type *ir_type = new_type_pointer(unique_ident("pointer"),
- ir_type_void, mode_P_data);
- type->type.firm_type = ir_type;
-
- ir_points_to = get_ir_type(points_to);
- set_pointer_points_to_type(ir_type, ir_points_to);
+ type_t *points_to = type->points_to;
+ ir_type *ir_points_to = get_ir_type_incomplete(points_to);
+ ir_type *ir_type = new_type_pointer(id_unique("pointer.%u"),
+ ir_points_to, mode_P_data);
return ir_type;
}
type_t *element_type = type->element_type;
ir_type *ir_element_type = get_ir_type(element_type);
- ident *id = unique_ident("array");
- ir_type *ir_type = new_type_array(id, 1, ir_element_type);
+ ident *id = id_unique("array.%u");
+ ir_type *ir_type = new_type_array(id, 1, ir_element_type);
- if(type->size != NULL) {
- int n_elements = fold_constant(type->size);
+ const int align = get_type_alignment_bytes(ir_element_type);
+ set_type_alignment_bytes(ir_type, align);
+
+ if (type->size_constant) {
+ int n_elements = type->size;
set_array_bounds_int(ir_type, 0, 0, n_elements);
size_t elemsize = get_type_size_bytes(ir_element_type);
- int align = get_type_alignment_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_alignment_bytes(ir_type, align);
- set_type_state(ir_type, layout_fixed);
} else {
set_array_lower_bound_int(ir_type, 0, 0);
}
+ set_type_state(ir_type, layout_fixed);
return ir_type;
}
char name[32];
snprintf(name, sizeof(name), "I%u", size);
ident *id = new_id_from_str(name);
- res = new_type_primitive(mangle_u(get_type_ident(base_tp), id), mode);
+ dbg_info *dbgi = get_dbg_info(&builtin_source_position);
+ res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
set_primitive_base_type(res, base_tp);
return res;
snprintf(name, sizeof(name), "U%u", size);
ident *id = new_id_from_str(name);
- res = new_type_primitive(mangle_u(get_type_ident(base_tp), id), mode);
+ dbg_info *dbgi = get_dbg_info(&builtin_source_position);
+ res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
set_primitive_base_type(res, base_tp);
return res;
static ir_type *create_bitfield_type(bitfield_type_t *const type)
{
- type_t *base = skip_typeref(type->base);
- assert(base->kind == TYPE_ATOMIC);
+ type_t *base = skip_typeref(type->base_type);
+ assert(base->kind == TYPE_ATOMIC || base->kind == TYPE_ENUM);
ir_type *irbase = get_ir_type(base);
- unsigned size = fold_constant(type->size);
+ unsigned size = type->bit_size;
assert(!is_type_float(base));
- if(is_type_signed(base)) {
+ if (is_type_signed(base)) {
return get_signed_int_type_for_bit_size(irbase, size);
} else {
return get_unsigned_int_type_for_bit_size(irbase, size);
#define INVALID_TYPE ((ir_type_ptr)-1)
-static ir_type *create_struct_type(compound_type_t *type)
+enum {
+ COMPOUND_IS_STRUCT = false,
+ COMPOUND_IS_UNION = true
+};
+
+/**
+ * Construct firm type from ast struct type.
+ *
+ * As anonymous inner structs get flattened to a single firm type, we might get
+ * irtype, outer_offset and out_align passed (they represent the position of
+ * the anonymous inner struct inside the resulting firm struct)
+ */
+static ir_type *create_compound_type(compound_type_t *type, ir_type *irtype,
+ size_t *outer_offset, size_t *outer_align,
+ bool incomplete, bool is_union)
{
- symbol_t *symbol = type->declaration->symbol;
- ident *id;
- if(symbol != NULL) {
- id = unique_ident(symbol->string);
- } else {
- id = unique_ident("__anonymous_struct");
- }
- ir_type *irtype = new_type_struct(id);
+ compound_t *compound = type->compound;
- type->type.firm_type = irtype;
+ 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;
- declaration_t *entry = type->declaration->scope.declarations;
- for( ; entry != NULL; entry = entry->next) {
- if(entry->namespc != NAMESPACE_NORMAL)
+ size_t size = 0;
+
+ if (irtype == NULL) {
+ symbol_t *symbol = compound->base.symbol;
+ ident *id;
+ if (symbol != NULL) {
+ id = new_id_from_str(symbol->string);
+ } else {
+ if (is_union) {
+ id = id_unique("__anonymous_union.%u");
+ } else {
+ id = id_unique("__anonymous_struct.%u");
+ }
+ }
+ dbg_info *dbgi = get_dbg_info(&compound->base.source_position);
+
+ if (is_union) {
+ irtype = new_d_type_union(id, dbgi);
+ } else {
+ irtype = new_d_type_struct(id, dbgi);
+ }
+
+ compound->irtype_complete = false;
+ compound->irtype = irtype;
+ } else {
+ offset = *outer_offset;
+ align_all = *outer_align;
+ }
+
+ if (incomplete)
+ return irtype;
+
+ compound->irtype_complete = true;
+
+ entity_t *entry = compound->members.entities;
+ for ( ; entry != NULL; entry = entry->base.next) {
+ if (entry->kind != ENTITY_COMPOUND_MEMBER)
continue;
- type_t *entry_type = skip_typeref(entry->type);
+ size_t prev_offset = offset;
+
+ symbol_t *symbol = entry->base.symbol;
+ type_t *entry_type = skip_typeref(entry->declaration.type);
+ dbg_info *dbgi = get_dbg_info(&entry->base.source_position);
+
+ ident *ident;
+ if (symbol != NULL) {
+ ident = new_id_from_str(symbol->string);
+ } else {
+ if (entry_type->kind == TYPE_COMPOUND_STRUCT) {
+ create_compound_type(&entry_type->compound, irtype, &offset,
+ &align_all, false, COMPOUND_IS_STRUCT);
+ goto finished_member;
+ } else if (entry_type->kind == TYPE_COMPOUND_UNION) {
+ create_compound_type(&entry_type->compound, irtype, &offset,
+ &align_all, false, COMPOUND_IS_UNION);
+ goto finished_member;
+ } else {
+ assert(entry_type->kind == TYPE_BITFIELD);
+ }
+ ident = id_unique("anon.%u");
+ }
+
ir_type *base_irtype;
- if(entry_type->kind == TYPE_BITFIELD) {
- base_irtype = get_ir_type(entry_type->bitfield.base);
+ if (entry_type->kind == TYPE_BITFIELD) {
+ base_irtype = get_ir_type(entry_type->bitfield.base_type);
} else {
base_irtype = get_ir_type(entry_type);
}
size_t entry_alignment = get_type_alignment_bytes(base_irtype);
size_t misalign = offset % entry_alignment;
- dbg_info *dbgi = get_dbg_info(&entry->source_position);
- ir_entity *entity = NULL;
- if(entry->symbol != NULL) {
- ident *ident = new_id_from_str(entry->symbol->string);
- ir_type *entry_irtype = get_ir_type(entry_type);
- entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
- } else {
- /* only bitfields are allowed to be anonymous */
- assert(entry_type->kind == TYPE_BITFIELD);
- }
+ 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);
+ if (entry_type->kind == TYPE_BITFIELD) {
+ size_t size_bits = entry_type->bitfield.bit_size;
size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
- if(size_bits > rest_size_bits) {
+ if (size_bits > rest_size_bits) {
/* start a new bucket */
offset += entry_alignment - misalign;
bit_offset = 0;
bit_offset = bit_offset + (size_bits % 8);
} else {
size_t entry_size = get_type_size_bytes(base_irtype);
- if(misalign > 0 || bit_offset > 0)
+ if (misalign > 0 || bit_offset > 0)
offset += entry_alignment - misalign;
base = offset;
bit_offset = 0;
}
- if(entry_alignment > align_all) {
- if(entry_alignment % align_all != 0) {
+ if (entry_alignment > align_all) {
+ if (entry_alignment % align_all != 0) {
panic("uneven alignments not supported yet");
}
align_all = entry_alignment;
}
- if(entity != NULL) {
- set_entity_offset(entity, base);
- set_entity_offset_bits_remainder(entity,
- (unsigned char) bits_remainder);
- add_struct_member(irtype, entity);
- entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
- entry->v.entity = entity;
+ set_entity_offset(entity, base);
+ set_entity_offset_bits_remainder(entity,
+ (unsigned char) bits_remainder);
+ //add_struct_member(irtype, entity);
+ entry->declaration.kind = DECLARATION_KIND_COMPOUND_MEMBER;
+ assert(entry->compound_member.entity == NULL);
+ entry->compound_member.entity = entity;
+
+finished_member:
+ if (is_union) {
+ size_t entry_size = offset - prev_offset;
+ if (entry_size > size) {
+ size = entry_size;
+ }
+ offset = 0;
+ bit_offset = 0;
}
}
- size_t misalign = offset % align_all;
- if(misalign > 0 || bit_offset > 0) {
- offset += align_all - misalign;
+ if (!is_union) {
+ size = offset;
}
- set_type_alignment_bytes(irtype, align_all);
- set_type_size_bytes(irtype, offset);
- set_type_state(irtype, layout_fixed);
- return irtype;
-}
-
-static ir_type *create_union_type(compound_type_t *type)
-{
- declaration_t *declaration = type->declaration;
- symbol_t *symbol = declaration->symbol;
- ident *id;
- if(symbol != NULL) {
- id = unique_ident(symbol->string);
- } else {
- id = unique_ident("__anonymous_union");
+ size_t misalign = offset % align_all;
+ if (misalign > 0 || bit_offset > 0) {
+ size += align_all - misalign;
}
- ir_type *irtype = new_type_union(id);
-
- type->type.firm_type = irtype;
-
- int align_all = 1;
- int size = 0;
- declaration_t *entry = declaration->scope.declarations;
- for( ; entry != NULL; entry = entry->next) {
- if(entry->namespc != NAMESPACE_NORMAL)
- continue;
-
- ident *ident = new_id_from_str(entry->symbol->string);
- ir_type *entry_ir_type = get_ir_type(entry->type);
-
- int entry_size = get_type_size_bytes(entry_ir_type);
- int 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;
- entry->v.entity = entity;
- if(entry_size > size) {
- size = entry_size;
+ if (outer_offset != NULL) {
+ if (!is_union) {
+ *outer_offset = offset;
+ } else {
+ *outer_offset += size;
}
- if(entry_alignment > align_all) {
- if(entry_alignment % align_all != 0) {
- panic("Uneven alignments not supported yet");
+
+ if (align_all > *outer_align) {
+ if (align_all % *outer_align != 0) {
+ panic("uneven alignments not supported yet");
}
- align_all = entry_alignment;
+ *outer_align = align_all;
}
+ } else {
+ set_type_alignment_bytes(irtype, align_all);
+ set_type_size_bytes(irtype, size);
+ set_type_state(irtype, layout_fixed);
}
- set_type_alignment_bytes(irtype, align_all);
- set_type_size_bytes(irtype, size);
- set_type_state(irtype, layout_fixed);
-
return irtype;
}
-static ir_node *expression_to_firm(const expression_t *expression);
-static inline ir_mode *get_ir_mode(type_t *type);
-
static ir_type *create_enum_type(enum_type_t *const type)
{
- type->type.firm_type = ir_type_int;
+ type->base.firm_type = ir_type_int;
- ir_mode *const mode = get_ir_mode((type_t*) type);
+ 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;
+ bool constant_folding_old = constant_folding;
+ constant_folding = true;
- declaration->declaration_kind = DECLARATION_KIND_ENUM_ENTRY;
+ 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;
- expression_t *const init = declaration->init.enum_value;
+ expression_t *const init = entry->enum_value.value;
if (init != NULL) {
ir_node *const cnst = expression_to_firm(init);
if (!is_Const(cnst)) {
}
tv_next = get_Const_tarval(cnst);
}
- declaration->v.enum_val = tv_next;
+ entry->enum_value.tv = tv_next;
tv_next = tarval_add(tv_next, one);
}
+ constant_folding = constant_folding_old;
+
return ir_type_int;
}
+static ir_type *get_ir_type_incomplete(type_t *type)
+{
+ assert(type != NULL);
+ type = skip_typeref(type);
+
+ if (type->base.firm_type != NULL) {
+ assert(type->base.firm_type != INVALID_TYPE);
+ return type->base.firm_type;
+ }
+
+ switch (type->kind) {
+ case TYPE_COMPOUND_STRUCT:
+ return create_compound_type(&type->compound, NULL, NULL, NULL,
+ true, COMPOUND_IS_STRUCT);
+ case TYPE_COMPOUND_UNION:
+ return create_compound_type(&type->compound, NULL, NULL, NULL,
+ true, COMPOUND_IS_UNION);
+ default:
+ return get_ir_type(type);
+ }
+}
+
static ir_type *get_ir_type(type_t *type)
{
assert(type != NULL);
type = skip_typeref(type);
- if(type->base.firm_type != NULL) {
+ if (type->base.firm_type != NULL) {
assert(type->base.firm_type != INVALID_TYPE);
return type->base.firm_type;
}
ir_type *firm_type = NULL;
- switch(type->kind) {
+ switch (type->kind) {
case TYPE_ERROR:
- panic("error type occured");
+ /* Happens while constant folding, when there was an error */
+ return create_atomic_type(&type_void->atomic);
+
case TYPE_ATOMIC:
firm_type = create_atomic_type(&type->atomic);
break;
+ case TYPE_COMPLEX:
+ firm_type = create_complex_type(&type->complex);
+ break;
+ case TYPE_IMAGINARY:
+ firm_type = create_imaginary_type(&type->imaginary);
+ break;
case TYPE_FUNCTION:
firm_type = create_method_type(&type->function);
break;
firm_type = create_array_type(&type->array);
break;
case TYPE_COMPOUND_STRUCT:
- firm_type = create_struct_type(&type->compound);
+ firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
+ false, COMPOUND_IS_STRUCT);
break;
case TYPE_COMPOUND_UNION:
- firm_type = create_union_type(&type->compound);
+ firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
+ false, COMPOUND_IS_UNION);
break;
case TYPE_ENUM:
firm_type = create_enum_type(&type->enumt);
case TYPE_INVALID:
break;
}
- if(firm_type == NULL)
+ if (firm_type == NULL)
panic("unknown type found");
type->base.firm_type = firm_type;
ir_type *irtype = get_ir_type(type);
/* firm doesn't report a mode for arrays somehow... */
- if(is_Array_type(irtype)) {
+ if (is_Array_type(irtype)) {
return mode_P_data;
}
return mode;
}
-static ident *predef_idents[rts_max];
-
/** Names of the runtime functions. */
static const struct {
int id; /**< the rts id */
} 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_strncmp, 1, "strncmp", 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);
+static ident *rts_idents[sizeof(rts_data) / sizeof(rts_data[0])];
- ir_type *global_type = get_glob_type();
- ir_type *ir_type_method = get_ir_type(declaration->type);
- assert(is_Method_type(ir_type_method));
+/**
+ * Mangles an entity linker (ld) name for win32 usage.
+ *
+ * @param ent the entity to be mangled
+ * @param declaration the declaration
+ */
+static ident *create_ld_ident_win32(ir_entity *irentity, entity_t *entity)
+{
+ ident *id;
- 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;
- }
- }
- }
+ if (is_Method_type(get_entity_type(irentity)))
+ id = decorate_win32_c_fkt(irentity, get_entity_ident(irentity));
+ else {
+ /* always add an underscore in win32 */
+ id = mangle(id_underscore, get_entity_ident(irentity));
}
- set_entity_allocation(entity, allocation_static);
- declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
- declaration->v.entity = entity;
+ assert(is_declaration(entity));
+ decl_modifiers_t decl_modifiers = entity->declaration.modifiers;
+ if (decl_modifiers & DM_DLLIMPORT) {
+ /* add prefix for imported symbols */
+ id = mangle(id_imp, id);
+ }
+ return id;
+}
- return entity;
+/**
+ * Mangles an entity linker (ld) name for Linux ELF usage.
+ *
+ * @param ent the entity to be mangled
+ * @param declaration the declaration
+ */
+static ident *create_ld_ident_linux_elf(ir_entity *irentity, entity_t *entity)
+{
+ (void) entity;
+ return get_entity_ident(irentity);
}
-static ir_node *const_to_firm(const const_expression_t *cnst)
+/**
+ * Mangles an entity linker (ld) name for Mach-O usage.
+ *
+ * @param ent the entity to be mangled
+ * @param declaration the declaration
+ */
+static ident *create_ld_ident_macho(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);
+ (void) entity;
+ ident *id = mangle(id_underscore, get_entity_ident(irentity));
+ return id;
+}
- 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);
- }
- tv = new_tarval_from_str(buf, len, mode);
- }
+typedef ident* (*create_ld_ident_func)(ir_entity *irentity, entity_t *entity);
+create_ld_ident_func create_ld_ident = create_ld_ident_linux_elf;
- return new_d_Const(dbgi, mode, tv);
+/**
+ * Handle GNU attributes for entities
+ *
+ * @param ent the entity
+ * @param decl the routine declaration
+ */
+static void handle_gnu_attributes_ent(ir_entity *irentity, entity_t *entity)
+{
+ assert(is_declaration(entity));
+ decl_modifiers_t modifiers = entity->declaration.modifiers;
+ if (modifiers & DM_PURE) {
+ /* TRUE if the declaration includes the GNU
+ __attribute__((pure)) specifier. */
+ set_entity_additional_property(irentity, mtp_property_pure);
+ }
+ if (modifiers & DM_CONST) {
+ set_entity_additional_property(irentity, mtp_property_const);
+ have_const_functions = true;
+ }
+ if (modifiers & DM_USED) {
+ /* TRUE if the declaration includes the GNU
+ __attribute__((used)) specifier. */
+ set_entity_stickyness(irentity, stickyness_sticky);
+ }
+}
+
+/**
+ * Creates an entity representing a function.
+ *
+ * @param declaration the function declaration
+ */
+static ir_entity *get_function_entity(entity_t *entity)
+{
+ assert(entity->kind == ENTITY_FUNCTION);
+ if (entity->function.entity != NULL) {
+ return entity->function.entity;
+ }
+
+ symbol_t *symbol = entity->base.symbol;
+ ident *id = new_id_from_str(symbol->string);
+
+ ir_type *global_type = get_glob_type();
+ ir_type *ir_type_method = get_ir_type(entity->declaration.type);
+ bool const has_body = entity->function.statement != NULL;
+
+ /* already an entity defined? */
+ ir_entity *irentity = entitymap_get(&entitymap, symbol);
+ if (irentity != NULL) {
+ if (get_entity_visibility(irentity) == visibility_external_allocated
+ && has_body) {
+ set_entity_visibility(irentity, visibility_external_visible);
+ }
+ goto entity_created;
+ }
+
+ dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
+ irentity = new_d_entity(global_type, id, ir_type_method, dbgi);
+ set_entity_ld_ident(irentity, create_ld_ident(irentity, entity));
+
+ handle_gnu_attributes_ent(irentity, entity);
+
+ /* 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, visibility_external_visible);
+ } else if (storage_class == STORAGE_CLASS_STATIC ||
+ (is_inline && has_body)) {
+ if (!has_body) {
+ /* this entity was declared, but is defined nowhere */
+ set_entity_peculiarity(irentity, peculiarity_description);
+ }
+ set_entity_visibility(irentity, visibility_local);
+ } else if (has_body) {
+ set_entity_visibility(irentity, visibility_external_visible);
+ } else {
+ set_entity_visibility(irentity, visibility_external_allocated);
+ }
+ set_entity_allocation(irentity, allocation_static);
+
+ /* We should check for file scope here, but as long as we compile C only
+ this is not needed. */
+ if (! firm_opt.freestanding) {
+ /* check for a known runtime function */
+ for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
+ if (id != rts_idents[i])
+ 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);
+
+entity_created:
+ entity->declaration.kind = DECLARATION_KIND_FUNCTION;
+ entity->function.entity = irentity;
+
+ return irentity;
+}
+
+/**
+ * Creates a Const node representing a constant.
+ */
+static ir_node *const_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);
+
+ 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);
+ }
+ tv = new_tarval_from_str(buf, len, mode);
+ }
+
+ return new_d_Const(dbgi, mode, tv);
+}
+
+/**
+ * Creates a Const node representing a character constant.
+ */
+static ir_node *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);
+
+ long long int v = 0;
+ for (size_t i = 0; i < cnst->v.character.size; ++i) {
+ if (char_is_signed) {
+ v = (v << 8) | ((signed char)cnst->v.character.begin[i]);
+ } else {
+ v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
+ }
+ }
+ 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);
+}
+
+/**
+ * Creates a Const node representing a wide character constant.
+ */
+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);
+
+ long long int v = cnst->v.wide_character.begin[0];
+
+ 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);
}
+/**
+ * Creates a SymConst for a given entity.
+ *
+ * @param dbgi debug info
+ * @param mode the (reference) mode for the SymConst
+ * @param entity the entity
+ */
static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
- ir_entity *entity)
+ ir_entity *entity)
{
assert(entity != NULL);
union symconst_symbol sym;
return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
}
+/**
+ * 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();
- ir_type *const type = new_type_array(unique_ident("strtype"), 1,
- ir_type_const_char);
+ 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(id_unique("strtype.%u"), 1,
+ ir_type_const_char, dbgi);
- ident *const id = unique_ident(id_prefix);
- dbg_info *const dbgi = get_dbg_info(src_pos);
+ 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_type_state(type, layout_fixed);
tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
- for(size_t i = 0; i < slen; ++i) {
+ for (size_t i = 0; i < slen; ++i) {
tvs[i] = new_tarval_from_long(string[i], mode);
}
return create_symconst(dbgi, mode_P_data, entity);
}
+/**
+ * Creates a SymConst node representing a string literal.
+ *
+ * @param literal the string literal
+ */
static ir_node *string_literal_to_firm(
const string_literal_expression_t* literal)
{
- return string_to_firm(&literal->base.source_position, "Lstr",
+ return string_to_firm(&literal->base.source_position, "Lstr.%u",
&literal->value);
}
+/**
+ * Creates a SymConst node representing a wide string literal.
+ *
+ * @param literal the wide string literal
+ */
static ir_node *wide_string_literal_to_firm(
const wide_string_literal_expression_t* const literal)
{
ir_type *const global_type = get_glob_type();
ir_type *const elem_type = ir_type_wchar_t;
- ir_type *const type = new_type_array(unique_ident("strtype"), 1,
- elem_type);
+ dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
+ ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
+ elem_type, dbgi);
- ident *const id = unique_ident("Lstr");
- dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
+ ident *const id = id_unique("Lstr.%u");
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_type_state(type, layout_fixed);
tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
- for(size_t i = 0; i < slen; ++i) {
+ for (size_t i = 0; i < slen; ++i) {
tvs[i] = new_tarval_from_long(string[i], mode);
}
return create_symconst(dbgi, mode_P_data, entity);
}
-static ir_node *deref_address(ir_type *const irtype, ir_node *const addr,
- dbg_info *const dbgi)
+static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
+ ir_node *const addr)
{
- if (is_compound_type(irtype) ||
- is_Method_type(irtype) ||
- is_Array_type(irtype)) {
+ ir_type *irtype = get_ir_type(type);
+ if (is_compound_type(irtype)
+ || is_Method_type(irtype)
+ || is_Array_type(irtype)) {
return addr;
}
ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
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;
}
+/**
+ * Creates a strict Conv if neccessary.
+ */
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;
}
static ir_node *get_global_var_address(dbg_info *const dbgi,
- const declaration_t *const decl)
+ const entity_t *const entity)
{
- assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
+ assert(entity->kind == ENTITY_VARIABLE);
+ assert(entity->declaration.kind == DECLARATION_KIND_GLOBAL_VARIABLE);
- ir_entity *const entity = decl->v.entity;
- switch ((storage_class_tag_t)decl->storage_class) {
+ ir_entity *const irentity = entity->variable.v.entity;
+ switch ((storage_class_tag_t) entity->declaration.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);
+ return new_d_simpleSel(dbgi, no_mem, tls, irentity);
}
default:
- return create_symconst(dbgi, mode_P_data, entity);
+ return create_symconst(dbgi, mode_P_data, irentity);
}
}
-/* Returns the correct base address depending on whether it is a parameter or a
- * normal local variable */
+/**
+ * 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)
{
ir_graph *const irg = current_ir_graph;
}
}
-static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
+static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
{
- dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
- declaration_t *declaration = ref->declaration;
- type_t *type = skip_typeref(declaration->type);
+ ir_mode *value_mode = get_irn_mode(value);
- switch((declaration_kind_t) declaration->declaration_kind) {
- case DECLARATION_KIND_UNKNOWN:
- if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY) {
- break;
- }
- get_ir_type(type);
- /* FALLTHROUGH */
+ if (value_mode == dest_mode || is_Bad(value))
+ return value;
- case DECLARATION_KIND_ENUM_ENTRY: {
- ir_mode *const mode = get_ir_mode(type);
- return new_Const(mode, declaration->v.enum_val);
+ 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;
}
+ return new_d_Conv(dbgi, value, dest_mode);
+}
+
+/**
+ * Keep all memory edges of the given block.
+ */
+static void keep_all_memory(ir_node *block) {
+ ir_node *old = get_cur_block();
+
+ set_cur_block(block);
+ keep_alive(get_store());
+ /* TODO: keep all memory edges from restricted pointers */
+ set_cur_block(old);
+}
+
+static ir_node *reference_expression_enum_value_to_firm(
+ const reference_expression_t *ref)
+{
+ entity_t *entity = ref->entity;
+ type_t *type = skip_typeref(entity->enum_value.enum_type);
+ /* make sure the type is constructed */
+ (void) get_ir_type(type);
+
+ ir_mode *const mode = get_ir_mode(type);
+ return new_Const(mode, 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);
+ 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);
+
+ 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);
+ return get_value(entity->variable.v.value_number, mode);
}
case DECLARATION_KIND_FUNCTION: {
ir_mode *const mode = get_ir_mode(type);
- return create_symconst(dbgi, mode, declaration->v.entity);
+ return create_symconst(dbgi, mode, entity->function.entity);
+ }
+ case DECLARATION_KIND_INNER_FUNCTION: {
+ ir_mode *const mode = get_ir_mode(type);
+ if (!entity->function.goto_to_outer && !entity->function.need_closure) {
+ /* inner function not using the closure */
+ return create_symconst(dbgi, mode, entity->function.entity);
+ } else {
+ /* TODO: need trampoline here */
+ panic("Trampoline code not implemented");
+ return create_symconst(dbgi, mode, entity->function.entity);
+ }
}
case DECLARATION_KIND_GLOBAL_VARIABLE: {
- ir_node *const addr = get_global_var_address(dbgi, declaration);
- ir_type *const irtype = get_entity_type(declaration->v.entity);
- return deref_address(irtype, addr, dbgi);
+ ir_node *const addr = get_global_var_address(dbgi, entity);
+ return deref_address(dbgi, entity->declaration.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);
- ir_type *irtype = get_entity_type(entity);
- return deref_address(irtype, 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_VARIABLE_LENGTH_ARRAY:
+ 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_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 = get_global_var_address(dbgi, 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_ENUM_ENTRY:
- panic("trying to reference enum entry");
+ case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
+ return entity->variable.v.vla_base;
+
+ case DECLARATION_KIND_FUNCTION: {
+ type_t *const type = skip_typeref(entity->declaration.type);
+ ir_mode *const mode = get_ir_mode(type);
+ return create_symconst(dbgi, mode, entity->function.entity);
+ }
+ case DECLARATION_KIND_INNER_FUNCTION:
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);
switch(symbol->ID) {
case T___builtin_alloca: {
- if(call->arguments == NULL || call->arguments->next != NULL) {
+ if (call->arguments == NULL || call->arguments->next != NULL) {
panic("invalid number of parameters on __builtin_alloca");
}
expression_t *argument = call->arguments->expression;
return res;
}
+
+ case T___builtin_huge_val:
+ case T___builtin_inf:
+ case T___builtin_inff:
+ case T___builtin_infl: {
+ ir_mode *mode = get_ir_mode(function_type->function.return_type);
+ tarval *tv = get_mode_infinite(mode);
+ ir_node *res = new_d_Const(dbgi, mode, tv);
+ return res;
+ }
case T___builtin_nan:
case T___builtin_nanf:
- case T___builtin_nand: {
+ case T___builtin_nanl: {
/* Ignore string for now... */
assert(is_type_function(function_type));
ir_mode *mode = get_ir_mode(function_type->function.return_type);
}
}
+/**
+ * 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 *call)
{
+ dbg_info *dbgi = get_dbg_info(&call->base.source_position);
assert(get_cur_block() != NULL);
expression_t *function = call->function;
- if(function->kind == EXPR_BUILTIN_SYMBOL) {
+ if (function->kind == EXPR_BUILTIN_SYMBOL) {
return process_builtin_call(call);
}
+ if (function->kind == EXPR_REFERENCE) {
+ const reference_expression_t *ref = &function->reference;
+ entity_t *entity = ref->entity;
+
+ if (entity->kind == ENTITY_FUNCTION
+ && entity->function.entity == rts_entities[rts_alloca]) {
+ /* handle alloca() call */
+ expression_t *argument = call->arguments->expression;
+ ir_node *size = expression_to_firm(argument);
+
+ size = create_conv(dbgi, size, get_ir_mode(type_size_t));
+
+ ir_node *store = get_store();
+ dbg_info *dbgi = get_dbg_info(&call->base.source_position);
+ ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
+ stack_alloc);
+ ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
+ set_store(proj_m);
+ ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
+
+ return res;
+ }
+ }
ir_node *callee = expression_to_firm(function);
type_t *type = skip_typeref(function->base.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... */
int n_res = get_method_n_ress(ir_method_type);
- new_method_type = new_type_method(unique_ident("calltype"),
- n_parameters, n_res);
+ dbg_info *dbgi = get_dbg_info(&call->base.source_position);
+ new_method_type = new_d_type_method(id_unique("calltype.%u"),
+ n_parameters, n_res, dbgi);
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);
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,
type_t *return_type = skip_typeref(function_type->return_type);
ir_node *result = NULL;
- if(!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
+ if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
ir_mode *mode;
- if(is_type_scalar(return_type)) {
+ if (is_type_scalar(return_type)) {
mode = get_ir_mode(return_type);
} else {
mode = mode_P_data;
result = new_d_Proj(dbgi, resproj, mode, 0);
}
+ if (function->kind == EXPR_REFERENCE &&
+ function->reference.entity->declaration.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());
+ new_Block(0, NULL);
+ }
+
return result;
}
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)
ir_node *memory = get_store();
- if(is_type_scalar(type)) {
+ if (is_type_scalar(type)) {
ir_node *store = new_d_Store(dbgi, memory, addr, value);
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);
tarval *all_one = get_mode_all_one(mode);
int mode_size = get_mode_size_bits(mode);
- 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;
}
return mask1;
}
-static void bitfield_store_to_firm(const unary_expression_t *expression,
- ir_node *value)
+static void bitfield_store_to_firm(dbg_info *dbgi,
+ ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile)
{
- 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);
- ir_node *addr = expression_to_addr(select);
-
- assert(get_irn_mode(value) == mode);
+ ir_type *entity_type = get_entity_type(entity);
+ ir_type *base_type = get_primitive_base_type(entity_type);
+ assert(base_type != NULL);
+ ir_mode *mode = get_type_mode(base_type);
- 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));
+ int bitoffset = get_entity_offset_bits_remainder(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 *store = new_d_Store(dbgi, load_mem, addr, new_val);
ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
set_store(store_mem);
+
+ if (set_volatile) {
+ set_Load_volatility(load, volatility_is_volatile);
+ set_Store_volatility(store, volatility_is_volatile);
+ }
}
-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);
+ type_t *type = expression->base.type;
+ ir_mode *mode = get_ir_mode(type);
+ 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);
+
+ set_store(load_mem);
+
+ /* kill upper bits */
+ assert(expression->compound_entry->kind == ENTITY_COMPOUND_MEMBER);
+ ir_entity *entity = expression->compound_entry->compound_member.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);
+ }
+
+ return create_conv(dbgi, shiftr, mode);
+}
+
+/* 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 void 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);
value = do_strict_conv(dbgi, value);
- if(expression->kind == EXPR_REFERENCE) {
+ if (expression->kind == EXPR_REFERENCE) {
const reference_expression_t *ref = &expression->reference;
- 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);
+ 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;
}
}
- if(expression->kind == EXPR_UNARY_BITFIELD_EXTRACT) {
- bitfield_store_to_firm(&expression->unary, value);
- return;
+ if (addr == NULL)
+ addr = expression_to_addr(expression);
+
+ type_t *type = skip_typeref(expression->base.type);
+
+ 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->declaration.type->kind == TYPE_BITFIELD) {
+ ir_entity *irentity = entity->compound_member.entity;
+ bool set_volatile
+ = select->base.type->base.qualifiers & TYPE_QUALIFIER_VOLATILE;
+ bitfield_store_to_firm(dbgi, irentity, addr, value, set_volatile);
+ return;
+ }
}
- ir_node *addr = expression_to_addr(expression);
- type_t *type = skip_typeref(expression->base.type);
assign_value(dbgi, addr, type, 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;
- 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;
+ entity_t *entity = ref->entity;
+ assert(entity->kind == ENTITY_VARIABLE);
+ assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
+ if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
+ assert(addr == NULL);
+ ir_mode *mode = get_ir_mode(expression->base.type);
+ return get_value(entity->variable.v.value_number, mode);
+ }
}
- return new_d_Conv(dbgi, value, dest_mode);
+ assert(addr != NULL);
+ dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
+
+ ir_node *value;
+ if (expression->kind == EXPR_SELECT &&
+ expression->select.compound_entry->declaration.type->kind == TYPE_BITFIELD){
+ construct_select_compound(&expression->select);
+ value = bitfield_extract_to_firm(&expression->select, addr);
+ } else {
+ value = deref_address(dbgi, expression->base.type, addr);
+ }
+
+ 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(expression->base.type);
ir_node *offset;
- if(is_type_pointer(type)) {
+ if (is_type_pointer(type)) {
pointer_type_t *pointer_type = &type->pointer;
- unsigned elem_size = get_type_size(pointer_type->points_to);
- offset = new_Const_long(mode_int, elem_size);
+ offset = get_type_size(pointer_type->points_to);
} else {
assert(is_type_arithmetic(type));
offset = new_Const(mode, 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;
- }
- default:
- panic("no incdec expr in create_incdec");
- return NULL;
+ 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");
}
+
+ 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)
+static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
{
switch(kind) {
case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
- case EXPR_BINARY_NOTEQUAL: return pn_Cmp_Ne;
+ case EXPR_BINARY_NOTEQUAL:
+ return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
case EXPR_BINARY_ISLESS:
case EXPR_BINARY_LESS: return pn_Cmp_Lt;
case EXPR_BINARY_ISLESSEQUAL:
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;
+ expression_t *op1 = expression->left;
+ expression_t *op2 = expression->right;
+ entity_t *var2, *var = NULL;
+ ir_node *res = NULL;
+ pn_Cmp cmp_val;
- cmp_val = get_pnc(expression->base.kind);
+ cmp_val = get_pnc(expression->base.kind, op1->base.type);
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);
+ type_t *const type = skip_typeref(var->declaration.type);
ir_mode *const mode = get_ir_mode(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);
+ set_value(var2->variable.v.value_number, res);
res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
- set_value(var->v.value_number, res);
+ 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;
+ 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;
+ var = op2->reference.entity;
con = op1;
}
if (var != NULL) {
- type_t *const type = skip_typeref(var->type);
+ type_t *const type = skip_typeref(var->declaration.type);
ir_mode *const mode = get_ir_mode(type);
- res = get_value(var->v.value_number, mode);
+ res = get_value(var->variable.v.value_number, mode);
res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
- set_value(var->v.value_number, res);
+ set_value(var->variable.v.value_number, res);
}
return res;
}
}
}
-static ir_node *bitfield_extract_to_firm(const unary_expression_t *expression)
-{
- 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);
- 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);
-
- set_store(load_mem);
-
- /* 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);
- }
-
- return create_conv(dbgi, shiftr, mode);
-}
-
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)
+ if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
return expression_to_addr(expression->value);
const expression_t *value = expression->value;
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);
- ir_type *irtype = get_ir_type(value_type);
- assert(is_Pointer_type(irtype));
- ir_type *points_to = get_pointer_points_to_type(irtype);
- return deref_address(points_to, value_node, dbgi);
+ assert(is_type_pointer(value_type));
+ type_t *points_to = value_type->pointer.points_to;
+ 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)) {
+ 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)) {
+ if (is_type_scalar(type)) {
ir_mode *mode = get_ir_mode(type);
return create_conv(dbgi, value_node, mode);
} else {
}
}
case EXPR_UNARY_ASSUME:
- if(firm_opt.confirm)
+ if (firm_opt.confirm)
return handle_assume(dbgi, value);
else
return NULL;
- case EXPR_UNARY_BITFIELD_EXTRACT:
- return bitfield_extract_to_firm(expression);
default:
break;
panic("invalid UNEXPR type found");
}
-static ir_node *create_lazy_op(const binary_expression_t *expression)
+/**
+ * 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)
{
- 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));
- }
- }
-
+ ir_mode *mode = get_ir_mode(expression->base.type);
ir_node *cur_block = get_cur_block();
ir_node *one_block = new_immBlock();
ir_node *jmp_zero = new_d_Jmp(dbgi);
set_cur_block(cur_block);
- create_condition_evaluation((const expression_t*) expression,
- one_block, zero_block);
+ 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 *in_cf[2] = { jmp_one, jmp_zero };
+ new_Block(2, in_cf);
ir_node *in[2] = { one, zero };
ir_node *val = new_d_Phi(dbgi, 2, in, mode);
return val;
}
-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)
{
pointer_type_t *const pointer_type = &type->pointer;
- type_t *const points_to = pointer_type->points_to;
- const unsigned elem_size = get_type_size(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);
-}
-
-static ir_node *create_arithmetic_assign_binop(
- const binary_expression_t *expression, create_arithmetic_func func)
-{
- dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
- type_t *const type = skip_typeref(expression->base.type);
- ir_node *value;
+ type_t *const points_to = skip_typeref(pointer_type->points_to);
+ unsigned elem_size = get_type_size_const(points_to);
- 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);
+ /* gcc extension: allow arithmetic with void * and function * */
+ if ((elem_size == 0 && is_type_atomic(points_to, ATOMIC_TYPE_VOID)) ||
+ is_type_function(points_to)) {
+ elem_size = 1;
}
- ir_mode *const mode = get_ir_mode(type);
- value = create_conv(dbgi, value, mode);
- set_value_for_expression(expression->left, value);
+ assert(elem_size >= 1);
+ if (elem_size == 1)
+ return value;
- return value;
+ value = create_conv(dbgi, value, mode_int);
+ ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
+ ir_node *const mul = new_d_Mul(dbgi, value, cnst, mode_int);
+ return mul;
}
-static ir_node *create_add(const binary_expression_t *expression)
+static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
+ ir_node *left, ir_node *right)
{
- 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;
+ type_t *type_left = skip_typeref(expression->left->base.type);
+ type_t *type_right = skip_typeref(expression->right->base.type);
- 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);
+ expression_kind_t kind = expression->base.kind;
- 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);
- }
+ switch (kind) {
+ case EXPR_BINARY_SHIFTLEFT:
+ case EXPR_BINARY_SHIFTRIGHT:
+ case EXPR_BINARY_SHIFTLEFT_ASSIGN:
+ case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
+ mode = get_irn_mode(left);
+ right = create_conv(dbgi, right, mode_uint);
+ break;
- 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);
- }
-}
+ 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(expression->base.type);
+ ir_node *const elem_size = get_type_size(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(type_left);
+ break;
+ }
+ goto normal_node;
-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);
+ 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(type_left);
+ break;
+ } else if (is_type_pointer(type_right)) {
+ left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
+ mode = get_ir_mode(type_right);
+ 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_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;
- const unsigned elem_size = get_type_size(ptr_type->points_to);
- ir_mode *const mode = get_ir_mode(type);
- ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
- ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
- ir_node *const no_mem = new_NoMem();
- ir_node *const div = new_d_Div(dbgi, no_mem, sub, cnst, mode,
- op_pin_state_floats);
- return new_d_Proj(dbgi, div, mode, pn_Div_res);
+ default:
+normal_node:
+ mode = get_irn_mode(right);
+ left = create_conv(dbgi, left, mode);
+ break;
}
- 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:
+ 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);
+ 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;
- }
- default:
- panic("create shift op called for non-shift op");
- }
-
- return res;
-}
-
-
-static ir_node *create_divmod(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;
-
- switch (expression->base.kind) {
+ 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:
- if(mode_is_float(mode)) {
+ case EXPR_BINARY_DIV_ASSIGN: {
+ ir_node *pin = new_Pin(new_NoMem());
+ ir_node *op;
+ ir_node *res;
+ 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);
} else {
op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
res = new_d_Proj(dbgi, op, mode, pn_Div_res);
}
- break;
-
+ return res;
+ }
case EXPR_BINARY_MOD:
- case EXPR_BINARY_MOD_ASSIGN:
+ case EXPR_BINARY_MOD_ASSIGN: {
+ ir_node *pin = new_Pin(new_NoMem());
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;
-
- default: panic("unexpected binary expression type in create_divmod()");
+ 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("unexpected expression kind");
}
-
- return res;
}
-static ir_node *create_arithmetic_assign_divmod(
- const binary_expression_t *expression)
+static ir_node *create_lazy_op(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);
+ dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
+ type_t *type = expression->base.type;
+ ir_mode *mode = get_ir_mode(type);
- value = create_conv(dbgi, value, mode);
- set_value_for_expression(expression->left, value);
+ if (is_constant_expression(expression->left)) {
+ long val = fold_constant(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 && val != 0) ||
+ (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
+ return expression_to_firm(expression->right);
+ } else {
+ return new_Const(mode, get_mode_one(mode));
+ }
+ }
- return value;
+ return produce_condition_result((const expression_t*) expression, dbgi);
}
-static ir_node *create_arithmetic_assign_shift(
- const binary_expression_t *expression)
+typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
+ ir_node *right, ir_mode *mode);
+
+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;
+ ir_mode *left_mode = get_ir_mode(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_conv(dbgi, result, left_mode);
+ result = do_strict_conv(dbgi, result);
- return value;
+ set_value_for_expression_addr(left_expr, result, left_addr);
+
+ return result;
}
static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
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);
+ long pnc = get_pnc(kind, expression->left->base.type);
ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
return proj;
}
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);
+ set_value_for_expression_addr(expression->left, right, addr);
return right;
}
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);
+ return create_assign_binop(expression);
case EXPR_BINARY_BUILTIN_EXPECT:
- return expression_to_firm(expression->left);
+ return _expression_to_firm(expression->left);
default:
panic("TODO binexpr type");
}
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 *offset_type = skip_typeref(expression->index->base.type);
+ ir_mode *mode;
+ if (is_type_signed(offset_type)) {
+ mode = get_ir_mode(type_ssize_t);
+ } else {
+ mode = get_ir_mode(type_size_t);
+ }
+ offset = create_conv(dbgi, offset, mode);
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;
- unsigned elem_size = get_type_size(pointer_type->points_to);
- ir_node *elem_size_const = new_Const_long(mode_uint, elem_size);
+ ir_node *elem_size_const = get_type_size(pointer_type->points_to);
+ elem_size_const = create_conv(dbgi, elem_size_const, mode);
ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
- mode_uint);
+ mode);
ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
return result;
type_t *type = revert_automatic_type_conversion(
(const expression_t*) expression);
type = skip_typeref(type);
- ir_type *irtype = get_ir_type(type);
- return deref_address(irtype, addr, dbgi);
+ return deref_address(dbgi, type, addr);
+}
+
+static long get_offsetof_offset(const offsetof_expression_t *expression)
+{
+ type_t *orig_type = expression->type;
+ long offset = 0;
+
+ designator_t *designator = expression->designator;
+ 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) {
+ assert(is_type_compound(type));
+ symbol_t *symbol = designator->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->kind == ENTITY_COMPOUND_MEMBER);
+ assert(iter->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
+ offset += get_entity_offset(iter->compound_member.entity);
+
+ orig_type = iter->declaration.type;
+ } else {
+ expression_t *array_index = designator->array_index;
+ assert(designator->array_index != NULL);
+ assert(is_type_array(type));
+
+ long index = fold_constant(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);
+
+ offset += index * elem_size;
+
+ orig_type = type->array.element_type;
+ }
+ }
+
+ return offset;
+}
+
+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);
+
+ return new_d_Const(dbgi, mode, tv);
+}
+
+static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
+ ir_entity *entity, type_t *type);
+
+static ir_node *compound_literal_to_firm(
+ const compound_literal_expression_t *expression)
+{
+ type_t *type = expression->type;
+
+ /* create an entity on the stack */
+ ir_type *frame_type = get_irg_frame_type(current_ir_graph);
+
+ ident *const id = id_unique("CompLit.%u");
+ 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);
+
+ set_entity_variability(entity, variability_uninitialized);
+
+ /* create initialisation code */
+ 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;
}
/**
static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
{
type_t *type = expression->type;
- if(type == NULL) {
+ if (type == NULL) {
type = expression->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_size);
+ 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
+ && expression->tp_expression != NULL) {
+ expression_to_firm(expression->tp_expression);
+ }
+
+ return get_type_size(type);
}
/**
static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
{
type_t *type = expression->type;
- if(type == NULL) {
+ 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) {
+ const entity_t *entity = expression_is_variable(tp_expression);
+ if (entity != NULL) {
/* TODO: get the alignment of this variable. */
+ (void) entity;
}
type = tp_expression->base.type;
assert(type != NULL);
return new_SymConst(mode, sym, symconst_type_align);
}
-static long fold_constant(const expression_t *expression)
+static void init_ir_types(void);
+
+long fold_constant(const expression_t *expression)
{
+ assert(is_type_valid(skip_typeref(expression->base.type)));
+
+ bool constant_folding_old = constant_folding;
+ constant_folding = true;
+
+ init_ir_types();
+
assert(is_constant_expression(expression));
ir_graph *old_current_ir_graph = current_ir_graph;
- if(current_ir_graph == NULL) {
+ if (current_ir_graph == NULL) {
current_ir_graph = get_const_code_irg();
}
ir_node *cnst = expression_to_firm(expression);
current_ir_graph = old_current_ir_graph;
- if(!is_Const(cnst)) {
+ if (!is_Const(cnst)) {
panic("couldn't fold constant\n");
}
tarval *tv = get_Const_tarval(cnst);
- if(!tarval_is_long(tv)) {
+ if (!tarval_is_long(tv)) {
panic("result of constant folding is not integer\n");
}
+ constant_folding = constant_folding_old;
+
return get_tarval_long(tv);
}
dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
/* first try to fold a constant condition */
- if(is_constant_expression(expression->condition)) {
+ if (is_constant_expression(expression->condition)) {
long val = fold_constant(expression->condition);
- if(val) {
- return expression_to_firm(expression->true_expression);
+ 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);
}
/* create the true block */
ir_node *true_block = new_immBlock();
- ir_node *true_val = expression_to_firm(expression->true_expression);
+ ir_node *true_val = expression->true_expression != NULL ?
+ expression_to_firm(expression->true_expression) : NULL;
ir_node *true_jmp = new_Jmp();
/* create the false block */
/* create the condition evaluation */
set_cur_block(cur_block);
- create_condition_evaluation(expression->condition, true_block, false_block);
+ ir_node *const cond_expr = create_condition_evaluation(expression->condition, true_block, false_block);
+ if (expression->true_expression == NULL) {
+ if (cond_expr != NULL) {
+ true_val = cond_expr;
+ } else {
+ /* Condition ended with a short circuit (&&, ||, !) operation.
+ * Generate a "1" as value for the true branch. */
+ ir_mode *const mode = mode_Is;
+ true_val = new_Const(mode, get_mode_one(mode));
+ }
+ }
mature_immBlock(true_block);
mature_immBlock(false_block);
/* 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 *in_cf[2] = { true_jmp, false_jmp };
+ new_Block(2, in_cf);
/* TODO improve static semantics, so either both or no values are NULL */
if (true_val == NULL || false_val == NULL)
return val;
}
-static ir_node *select_addr(const select_expression_t *expression)
+/**
+ * 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);
+ construct_select_compound(expression);
+
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;
+ entity_t *entry = expression->compound_entry;
+ assert(entry->kind == ENTITY_COMPOUND_MEMBER);
+ assert(entry->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
+ ir_entity *irentity = entry->compound_member.entity;
- assert(entity != NULL);
+ assert(irentity != NULL);
- ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
+ ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, irentity);
return sel;
}
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);
- ir_type *irtype = get_ir_type(type);
+ type = skip_typeref(type);
+
+ entity_t *entry = expression->compound_entry;
+ assert(entry->kind == ENTITY_COMPOUND_MEMBER);
+ type_t *entry_type = skip_typeref(entry->declaration.type);
+
+ if (entry_type->kind == TYPE_BITFIELD) {
+ return bitfield_extract_to_firm(expression, addr);
+ }
- return deref_address(irtype, 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 = expr->type_expression->base.type;
+ const type_t *const type = skip_typeref(expr->type_expression->base.type);
gcc_type_class tc;
switch (type->kind)
/* should not be reached */
case ATOMIC_TYPE_INVALID:
tc = no_type_class;
- break;
+ goto make_const;
/* gcc cannot do that */
case ATOMIC_TYPE_VOID:
tc = void_type_class;
- break;
+ goto make_const;
case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
case ATOMIC_TYPE_ULONGLONG:
case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
tc = integer_type_class;
- break;
+ goto make_const;
case ATOMIC_TYPE_FLOAT:
case ATOMIC_TYPE_DOUBLE:
case ATOMIC_TYPE_LONG_DOUBLE:
tc = real_type_class;
- break;
-
-#ifdef PROVIDE_COMPLEX
- case ATOMIC_TYPE_FLOAT_COMPLEX:
- case ATOMIC_TYPE_DOUBLE_COMPLEX:
- case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
- tc = complex_type_class;
- break;
- case ATOMIC_TYPE_FLOAT_IMAGINARY:
- case ATOMIC_TYPE_DOUBLE_IMAGINARY:
- case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
- tc = complex_type_class;
- break;
-#endif
-
- default:
- panic("Unimplemented case in classify_type_to_firm().");
+ goto make_const;
}
- break;
+ panic("Unexpected atomic type in classify_type_to_firm().");
}
+ case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
+ case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
+ 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; break;
- case TYPE_COMPOUND_STRUCT: tc = record_type_class; break;
- case TYPE_COMPOUND_UNION: tc = union_type_class; break;
+ 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; break;
-
- default:
- panic("Unimplemented case in classify_type_to_firm().");
+ 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;
}
+ 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);
}
static ir_node *function_name_to_firm(
- const string_literal_expression_t *const expr)
+ const funcname_expression_t *const expr)
{
- 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 string_t string = { name, strlen(name) + 1 };
- current_function_name = string_to_firm(src_pos, "__func__", &string);
+ switch(expr->kind) {
+ case FUNCNAME_FUNCTION:
+ case FUNCNAME_PRETTY_FUNCTION:
+ case FUNCNAME_FUNCDNAME:
+ if (current_function_name == NULL) {
+ const source_position_t *const src_pos = &expr->base.source_position;
+ 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__.%u", &string);
+ }
+ return current_function_name;
+ case FUNCNAME_FUNCSIG:
+ if (current_funcsig == NULL) {
+ const source_position_t *const src_pos = &expr->base.source_position;
+ 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__.%u", &string);
+ }
+ return current_funcsig;
}
-
- return current_function_name;
+ panic("Unsupported function name");
}
static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
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);
+ type_t *const type = current_function_entity->declaration.type;
+ ir_type *const method_type = get_ir_type(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);
ir_node *const arg_sel =
new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
- size_t const parm_size = get_type_size(expr->parameter->type);
- ir_node *const cnst = new_Const_long(mode_uint, parm_size);
+ ir_node *const cnst = get_type_size(expr->parameter->base.type);
ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
set_value_for_expression(expr->ap, add);
static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
{
- ir_type *const irtype = get_ir_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(irtype, 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);
- size_t const parm_size = get_type_size(expr->base.type);
- ir_node *const cnst = new_Const_long(mode_uint, parm_size);
- ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
- set_value_for_expression(expr->ap, add);
+ 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_addr(ap_expr, add, ap_addr);
return res;
}
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) {
return NULL;
}
+static ir_node *get_label_block(label_t *label)
+{
+ 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 *old_cur_block = get_cur_block();
+ ir_node *block = new_immBlock();
+ set_cur_block(old_cur_block);
+
+ label->block = block;
+
+ ARR_APP1(label_t *, all_labels, label);
+
+ current_ir_graph = rem;
+ return block;
+}
+
+/**
+ * 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)
+{
+ ir_node *block = get_label_block(label->label);
+ ir_label_t nr = get_Block_label(block);
+
+ if (nr == 0) {
+ nr = get_irp_next_label_nr();
+ set_Block_label(block, nr);
+ }
+ symconst_symbol value;
+ value.label = nr;
+ return new_SymConst(mode_P_code, value, symconst_label);
+}
+
+/**
+ * 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(const expression_t *expression)
{
- switch(expression->kind) {
+#ifndef NDEBUG
+ if (!constant_folding) {
+ assert(!expression->base.transformed);
+ ((expression_t*) expression)->base.transformed = true;
+ }
+#endif
+
+ 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 wide_string_literal_to_firm(&expression->wide_string);
case EXPR_REFERENCE:
return reference_expression_to_firm(&expression->reference);
+ case EXPR_REFERENCE_ENUM_VALUE:
+ return reference_expression_enum_value_to_firm(&expression->reference);
case EXPR_CALL:
return call_expression_to_firm(&expression->call);
EXPR_UNARY_CASES
return select_to_firm(&expression->select);
case EXPR_CLASSIFY_TYPE:
return classify_type_to_firm(&expression->classify_type);
- case EXPR_FUNCTION:
- case EXPR_PRETTY_FUNCTION:
- return function_name_to_firm(&expression->string);
+ 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_OFFSETOF:
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);
+ case EXPR_LABEL_ADDRESS:
+ return label_address_to_firm(&expression->label_address);
case EXPR_UNKNOWN:
case EXPR_INVALID:
panic("invalid expression found");
}
-static ir_node *expression_to_firm(const expression_t *expression)
+static bool produces_mode_b(const expression_t *expression)
{
- ir_node *res = _expression_to_firm(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;
- if(res != NULL && get_irn_mode(res) == mode_b) {
- ir_mode *mode = get_ir_mode(expression->base.type);
- res = create_conv(NULL, res, mode);
- }
+ case EXPR_BINARY_BUILTIN_EXPECT:
+ return produces_mode_b(expression->binary.left);
+ case EXPR_BINARY_COMMA:
+ return produces_mode_b(expression->binary.right);
- return res;
+ default:
+ return false;
+ }
}
-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)) {
+ ir_node *res = _expression_to_firm(expression);
+ ir_mode *mode = get_ir_mode(expression->base.type);
+ assert(is_Const(res));
+ if (is_Const_null(res)) {
+ return new_Const_long(mode, 0);
+ } else {
+ return new_Const_long(mode, 1);
+ }
+ }
+
+ /* we have to produce a 0/1 from the mode_b expression */
+ dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
+ return produce_condition_result(expression, 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;
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;
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) {
+ if (expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
long cnst = fold_constant(expression->binary.right);
cond_jmp_predicate pred;
- if(cnst == 0) {
+ if (cnst == 0) {
pred = COND_JMP_PRED_FALSE;
} else {
pred = COND_JMP_PRED_TRUE;
}
add_immBlock_pred(true_block, true_proj);
- add_immBlock_pred(false_block, false_proj);
+ if (false_block != NULL) {
+ add_immBlock_pred(false_block, false_proj);
+ }
set_cur_block(NULL);
+ return cond_expr;
}
-
-static void create_declaration_entity(declaration_t *declaration,
- declaration_kind_t declaration_kind,
- ir_type *parent_type)
+static void create_variable_entity(entity_t *variable,
+ declaration_kind_t declaration_kind,
+ ir_type *parent_type)
{
- ident *const id = new_id_from_str(declaration->symbol->string);
- ir_type *const irtype = get_ir_type(declaration->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);
-
- 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);
- /* TODO: visibility? */
+ assert(variable->kind == ENTITY_VARIABLE);
+ type_t *const 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);
+
+ handle_gnu_attributes_ent(irentity, variable);
+
+ variable->declaration.kind = (unsigned char) declaration_kind;
+ variable->variable.v.entity = irentity;
+ set_entity_variability(irentity, variability_uninitialized);
+ set_entity_ld_ident(irentity, create_ld_ident(irentity, variable));
+ if (parent_type == get_tls_type())
+ set_entity_allocation(irentity, allocation_automatic);
+ else if (declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
+ set_entity_allocation(irentity, allocation_static);
+
+ if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
+ set_entity_volatility(irentity, volatility_is_volatile);
+ }
}
-typedef struct compound_graph_path_entry_t compound_graph_path_entry_t;
-enum compound_graph_entry_type_t {
- COMPOUND_GRAPH_ENTRY_ARRAY,
- COMPOUND_GRAPH_ENTRY_COMPOUND
+typedef struct type_path_entry_t type_path_entry_t;
+struct type_path_entry_t {
+ type_t *type;
+ ir_initializer_t *initializer;
+ size_t index;
+ entity_t *compound_entry;
};
-struct compound_graph_path_entry_t {
- int type;
- union {
- ir_entity *entity;
- int array_index;
- } v;
- compound_graph_path_entry_t *prev;
+typedef struct type_path_t type_path_t;
+struct type_path_t {
+ type_path_entry_t *path;
+ type_t *top_type;
+ bool invalid;
};
-static void create_initializer_object(initializer_t *initializer, type_t *type,
- ir_entity *entity, compound_graph_path_entry_t *entry, int len);
-
-static compound_graph_path *create_compound_path(ir_type *type,
- compound_graph_path_entry_t *entry, int len)
+static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
{
- compound_graph_path *path = new_compound_graph_path(type, len);
+ size_t len = ARR_LEN(path->path);
- int i = len - 1;
- for( ; entry != NULL; entry = entry->prev, --i) {
- assert(i >= 0);
- if(entry->type == COMPOUND_GRAPH_ENTRY_COMPOUND) {
- set_compound_graph_path_node(path, i, entry->v.entity);
+ 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->base.symbol->string);
+ } else if (is_type_array(type)) {
+ fprintf(stderr, "[%zu]", entry->index);
} else {
- assert(entry->type == COMPOUND_GRAPH_ENTRY_ARRAY);
- set_compound_graph_path_array_index(path, i, entry->v.array_index);
+ fprintf(stderr, "-INVALID-");
}
}
- assert(i == -1);
+ fprintf(stderr, " (");
+ print_type(path->top_type);
+ fprintf(stderr, ")");
+}
- return path;
+static type_path_entry_t *get_type_path_top(const type_path_t *path)
+{
+ size_t len = ARR_LEN(path->path);
+ assert(len > 0);
+ return & path->path[len-1];
}
-static void create_initializer_value(initializer_value_t *initializer,
- ir_entity *entity,
- compound_graph_path_entry_t *entry,
- int len)
+static type_path_entry_t *append_to_type_path(type_path_t *path)
{
- ir_node *node = expression_to_firm(initializer->value);
- ir_type *type = get_entity_type(entity);
- compound_graph_path *path = create_compound_path(type, entry, len);
- add_compound_ent_value_w_path(entity, node, path);
+ size_t len = ARR_LEN(path->path);
+ ARR_RESIZE(type_path_entry_t, path->path, len+1);
+
+ type_path_entry_t *result = & path->path[len];
+ memset(result, 0, sizeof(result[0]));
+ return result;
}
-static void create_initializer_compound(initializer_list_t *initializer,
- compound_type_t *type,
- ir_entity *entity,
- compound_graph_path_entry_t *last_entry,
- int len)
+static size_t get_compound_member_count(const compound_type_t *type)
{
- declaration_t *compound_declaration = type->declaration;
+ 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;
+ }
- declaration_t *compound_entry = compound_declaration->scope.declarations;
+ return n_members;
+}
- compound_graph_path_entry_t entry;
- entry.type = COMPOUND_GRAPH_ENTRY_COMPOUND;
- entry.prev = last_entry;
- ++len;
+static ir_initializer_t *get_initializer_entry(type_path_t *path)
+{
+ type_t *orig_top_type = path->top_type;
+ type_t *top_type = skip_typeref(orig_top_type);
- size_t i = 0;
- for( ; compound_entry != NULL; compound_entry = compound_entry->next) {
- if(compound_entry->symbol == NULL)
- continue;
- if(compound_entry->namespc != NAMESPACE_NORMAL)
- continue;
+ assert(is_type_compound(top_type) || is_type_array(top_type));
- if(i >= initializer->len)
- break;
+ if (ARR_LEN(path->path) == 0) {
+ return NULL;
+ } else {
+ type_path_entry_t *top = get_type_path_top(path);
+ ir_initializer_t *initializer = top->initializer;
+ return get_initializer_compound_value(initializer, top->index);
+ }
+}
+
+static void descend_into_subtype(type_path_t *path)
+{
+ type_t *orig_top_type = path->top_type;
+ type_t *top_type = skip_typeref(orig_top_type);
+
+ assert(is_type_compound(top_type) || is_type_array(top_type));
+
+ ir_initializer_t *initializer = get_initializer_entry(path);
+
+ type_path_entry_t *top = append_to_type_path(path);
+ top->type = top_type;
+
+ size_t len;
+
+ if (is_type_compound(top_type)) {
+ compound_t *compound = top_type->compound.compound;
+ entity_t *entry = compound->members.entities;
+
+ top->compound_entry = entry;
+ top->index = 0;
+ 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);
+
+ top->index = 0;
+ path->top_type = top_type->array.element_type;
+ len = top_type->array.size;
+ }
+ 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) {
+ type_path_entry_t *entry = & path->path[path_len-2];
+ ir_initializer_t *tinitializer = entry->initializer;
+ set_initializer_compound_value(tinitializer, entry->index,
+ initializer);
+ }
+ }
+ top->initializer = initializer;
+}
+
+static void ascend_from_subtype(type_path_t *path)
+{
+ type_path_entry_t *top = get_type_path_top(path);
- entry.v.entity = compound_entry->v.entity;
+ path->top_type = top->type;
- initializer_t *sub_initializer = initializer->initializers[i];
+ size_t len = ARR_LEN(path->path);
+ ARR_RESIZE(type_path_entry_t, path->path, len-1);
+}
- assert(compound_entry != NULL);
- assert(compound_entry->declaration_kind
- == DECLARATION_KIND_COMPOUND_MEMBER);
+static void walk_designator(type_path_t *path, const designator_t *designator)
+{
+ /* designators start at current object type */
+ ARR_RESIZE(type_path_entry_t, path->path, 1);
+
+ 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) {
+ assert(is_type_compound(type));
+ size_t index = 0;
+ symbol_t *symbol = designator->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);
- if(sub_initializer->kind == INITIALIZER_VALUE) {
- create_initializer_value(&sub_initializer->value,
- entity, &entry, len);
+ top->type = orig_type;
+ top->compound_entry = iter;
+ top->index = index;
+ orig_type = iter->declaration.type;
} else {
- type_t *entry_type = skip_typeref(compound_entry->type);
- create_initializer_object(sub_initializer, entry_type, entity,
- &entry, len);
+ expression_t *array_index = designator->array_index;
+ assert(designator->array_index != NULL);
+ assert(is_type_array(type));
+
+ long index = fold_constant(array_index);
+ assert(index >= 0);
+#ifndef NDEBUG
+ if (type->array.size_constant) {
+ long array_size = type->array.size;
+ assert(index < array_size);
+ }
+#endif
+
+ top->type = orig_type;
+ top->index = (size_t) index;
+ orig_type = type->array.element_type;
}
+ path->top_type = orig_type;
- ++i;
+ if (designator->next != NULL) {
+ descend_into_subtype(path);
+ }
}
+
+ path->invalid = false;
}
-static void create_initializer_array(initializer_list_t *initializer,
- array_type_t *type, ir_entity *entity,
- compound_graph_path_entry_t *last_entry,
- int len)
+static void advance_current_object(type_path_t *path)
{
- type_t *element_type = type->element_type;
- element_type = skip_typeref(element_type);
+ if (path->invalid) {
+ /* TODO: handle this... */
+ panic("invalid initializer in ast2firm (excessive elements)");
+ return;
+ }
- compound_graph_path_entry_t entry;
- entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
- entry.prev = last_entry;
- ++len;
+ type_path_entry_t *top = get_type_path_top(path);
- size_t i;
- for(i = 0; i < initializer->len; ++i) {
- entry.v.array_index = i;
+ type_t *type = skip_typeref(top->type);
+ if (is_type_union(type)) {
+ top->compound_entry = NULL;
+ } else if (is_type_struct(type)) {
+ entity_t *entry = top->compound_entry;
- initializer_t *sub_initializer = initializer->initializers[i];
+ top->index++;
+ entry = entry->base.next;
+ top->compound_entry = entry;
+ if (entry != NULL) {
+ assert(entry->kind == ENTITY_COMPOUND_MEMBER);
+ path->top_type = entry->declaration.type;
+ return;
+ }
+ } else {
+ assert(is_type_array(type));
- if(sub_initializer->kind == INITIALIZER_VALUE) {
- create_initializer_value(&sub_initializer->value,
- entity, &entry, len);
- } else {
- create_initializer_object(sub_initializer, element_type, entity,
- &entry, len);
+ top->index++;
+ if (!type->array.size_constant || top->index < type->array.size) {
+ return;
}
}
-#if 0
- /* TODO: initialize rest... */
- if(type->size_expression != NULL) {
- size_t array_len = fold_constant(type->size_expression);
- for( ; i < array_len; ++i) {
+ /* 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);
+
+ if (len > 1) {
+ ascend_from_subtype(path);
+ advance_current_object(path);
+ } else {
+ path->invalid = true;
+ }
+}
+
+
+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)
+{
+ if (is_type_compound(initializer->value->base.type)) {
+ panic("initializer creation for compounds not implemented yet");
+ }
+ ir_node *value = expression_to_firm(initializer->value);
+ return create_initializer_const(value);
+}
+
+static ir_initializer_t *create_ir_initializer_list(
+ const initializer_list_t *initializer, type_t *type)
+{
+ type_path_t path;
+ memset(&path, 0, sizeof(path));
+ path.top_type = type;
+ path.path = NEW_ARR_F(type_path_entry_t, 0);
+
+ descend_into_subtype(&path);
+
+ for (size_t i = 0; i < initializer->len; ++i) {
+ const initializer_t *sub_initializer = initializer->initializers[i];
+
+ if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
+ walk_designator(&path, sub_initializer->designator.designator);
+ continue;
+ }
+ 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))
+ break;
+ descend_into_subtype(&path);
+ }
}
+
+ ir_initializer_t *sub_irinitializer
+ = create_ir_initializer(sub_initializer, path.top_type);
+
+ size_t path_len = ARR_LEN(path.path);
+ assert(path_len >= 1);
+ type_path_entry_t *entry = & path.path[path_len-1];
+ ir_initializer_t *tinitializer = entry->initializer;
+ set_initializer_compound_value(tinitializer, entry->index,
+ sub_irinitializer);
+
+ advance_current_object(&path);
}
-#endif
+
+ assert(ARR_LEN(path.path) >= 1);
+ ir_initializer_t *result = path.path[0].initializer;
+ DEL_ARR_F(path.path);
+
+ return result;
}
-static void create_initializer_string(initializer_string_t *initializer,
- array_type_t *type, ir_entity *entity,
- compound_graph_path_entry_t *last_entry,
- int len)
+static ir_initializer_t *create_ir_initializer_string(
+ const initializer_string_t *initializer, type_t *type)
{
- type_t *element_type = type->element_type;
- element_type = skip_typeref(element_type);
+ type = skip_typeref(type);
+
+ size_t string_len = initializer->string.size;
+ assert(type->kind == TYPE_ARRAY);
+ assert(type->array.size_constant);
+ size_t len = type->array.size;
+ ir_initializer_t *irinitializer = create_initializer_compound(len);
- compound_graph_path_entry_t entry;
- entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
- entry.prev = last_entry;
- ++len;
+ const char *string = initializer->string.begin;
+ ir_mode *mode = get_ir_mode(type->array.element_type);
- ir_type *const irtype = get_entity_type(entity);
- size_t arr_len = get_array_type_size(type);
- const char *const p = initializer->string.begin;
- if (initializer->string.size < arr_len) {
- arr_len = initializer->string.size;
+ for (size_t i = 0; i < len; ++i) {
+ char c = 0;
+ if (i < string_len)
+ c = string[i];
+
+ 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);
}
- for (size_t i = 0; i < arr_len; ++i) {
- entry.v.array_index = i;
- ir_node *node = new_Const_long(mode_Bs, p[i]);
- compound_graph_path *path = create_compound_path(irtype, &entry, len);
- add_compound_ent_value_w_path(entity, node, path);
+ return irinitializer;
+}
+
+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);
+ assert(type->array.size_constant);
+ size_t len = type->array.size;
+ 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);
+
+ for (size_t i = 0; i < len; ++i) {
+ wchar_rep_t c = 0;
+ if (i < string_len) {
+ c = string[i];
+ }
+ 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);
}
+
+ return irinitializer;
}
-static void create_initializer_wide_string(
- const initializer_wide_string_t *const initializer, array_type_t *const type,
- ir_entity *const entity, compound_graph_path_entry_t *const last_entry,
- int len)
+static ir_initializer_t *create_ir_initializer(
+ const initializer_t *initializer, type_t *type)
{
- type_t *element_type = type->element_type;
- element_type = skip_typeref(element_type);
+ switch(initializer->kind) {
+ case INITIALIZER_STRING:
+ return create_ir_initializer_string(&initializer->string, type);
- compound_graph_path_entry_t entry;
- entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
- entry.prev = last_entry;
- ++len;
+ case INITIALIZER_WIDE_STRING:
+ return create_ir_initializer_wide_string(&initializer->wide_string,
+ type);
- ir_type *const irtype = get_entity_type(entity);
- const size_t arr_len = get_array_type_size(type);
- const wchar_rep_t * p = initializer->string.begin;
- const wchar_rep_t *const end = p + initializer->string.size;
- for (size_t i = 0; i < arr_len && p != end; ++i, ++p) {
- entry.v.array_index = i;
+ case INITIALIZER_LIST:
+ return create_ir_initializer_list(&initializer->list, type);
- ir_node *node = new_Const_long(mode_int, *p);
- compound_graph_path *path = create_compound_path(irtype, &entry, len);
- add_compound_ent_value_w_path(entity, node, path);
+ case INITIALIZER_VALUE:
+ return create_ir_initializer_value(&initializer->value);
+
+ case INITIALIZER_DESIGNATOR:
+ panic("unexpected designator initializer found");
}
+ panic("unknown initializer");
}
-static void create_initializer_object(initializer_t *initializer, type_t *type,
- ir_entity *entity, compound_graph_path_entry_t *entry, int len)
+static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
+ ir_node *base_addr)
{
- if(is_type_array(type)) {
- array_type_t *array_type = &type->array;
+ if (is_atomic_type(type)) {
+ ir_mode *mode = get_type_mode(type);
+ tarval *zero = get_mode_null(mode);
+ ir_node *cnst = new_d_Const(dbgi, mode, zero);
+
+ /* 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);
+ } else {
+ assert(is_compound_type(type));
- switch (initializer->kind) {
- case INITIALIZER_STRING: {
- initializer_string_t *const string = &initializer->string;
- create_initializer_string(string, array_type, entity, entry, len);
- return;
- }
+ int n_members;
+ 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);
+ }
- case INITIALIZER_WIDE_STRING: {
- initializer_wide_string_t *const string = &initializer->wide_string;
- create_initializer_wide_string(string, array_type, entity, entry, len);
- return;
- }
+ 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);
+ ir_node *in[1] = { cnst };
+ irtype = get_array_element_type(type);
+ addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
+ } else {
+ ir_entity *member = get_compound_member(type, i);
- case INITIALIZER_LIST: {
- initializer_list_t *const list = &initializer->list;
- create_initializer_array(list, array_type, entity, entry, len);
- return;
+ irtype = get_entity_type(member);
+ addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
}
- case INITIALIZER_VALUE:
- break;
+ create_dynamic_null_initializer(irtype, dbgi, addr);
}
- panic("Unhandled initializer");
- } else {
- assert(initializer->kind == INITIALIZER_LIST);
- initializer_list_t *list = &initializer->list;
+ }
+}
+
+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(type, dbgi, base_addr);
+ return;
+ }
+ case IR_INITIALIZER_CONST: {
+ ir_node *node = get_initializer_const_value(initializer);
+ ir_mode *mode = get_irn_mode(node);
+ 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);
+ return;
+ }
+
+ assert(get_type_mode(type) == mode);
+ ir_node *mem = get_store();
+ ir_node *store = new_d_Store(dbgi, mem, base_addr, node);
+ 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);
+ 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);
+ return;
+ }
+
+ assert(get_type_mode(type) == mode);
+ 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);
+ return;
+ }
+ case IR_INITIALIZER_COMPOUND: {
+ assert(is_compound_type(type));
+ int n_members;
+ 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)
+ != (unsigned) n_members)
+ panic("initializer doesn't match compound type");
+
+ for (int i = 0; i < n_members; ++i) {
+ ir_node *addr;
+ ir_type *irtype;
+ ir_entity *sub_entity;
+ if (is_Array_type(type)) {
+ tarval *index_tv = new_tarval_from_long(i, mode_uint);
+ ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
+ ir_node *in[1] = { cnst };
+ 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 {
+ 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);
- assert(is_type_compound(type));
- compound_type_t *compound_type = &type->compound;
- create_initializer_compound(list, compound_type, entity, entry, len);
+ create_dynamic_initializer_sub(sub_init, sub_entity, irtype, dbgi,
+ addr);
+ }
+ return;
}
+ }
+
+ panic("invalid IR_INITIALIZER found");
+}
+
+static void create_dynamic_initializer(ir_initializer_t *initializer,
+ dbg_info *dbgi, ir_entity *entity)
+{
+ ir_node *frame = get_local_frame(entity);
+ ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
+ ir_type *type = get_entity_type(entity);
+
+ create_dynamic_initializer_sub(initializer, entity, type, dbgi, base_addr);
}
-static void create_initializer_local_variable_entity(declaration_t *declaration)
+static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
+ ir_entity *entity, type_t *type)
{
- initializer_t *initializer = declaration->init.initializer;
- dbg_info *dbgi = get_dbg_info(&declaration->source_position);
- ir_entity *entity = declaration->v.entity;
- ir_node *memory = get_store();
- ir_node *nomem = new_NoMem();
- ir_node *frame = get_irg_frame(current_ir_graph);
- ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
+ ir_node *memory = get_store();
+ ir_node *nomem = new_NoMem();
+ 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);
- type_t *type = skip_typeref(declaration->type);
+ type = skip_typeref(type);
assign_value(dbgi, addr, type, value);
return;
}
+ if (!is_constant_initializer(initializer)) {
+ ir_initializer_t *irinitializer
+ = create_ir_initializer(initializer, type);
+
+ create_dynamic_initializer(irinitializer, dbgi, entity);
+ 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(declaration->type);
+ 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 init_entity = new_d_entity(global_type, id, irtype, dbgi);
set_entity_ld_ident(init_entity, id);
set_entity_visibility(init_entity, visibility_local);
set_entity_allocation(init_entity, allocation_static);
- ir_graph *const old_current_ir_graph = current_ir_graph;
- current_ir_graph = get_const_code_irg();
-
- type_t *const type = skip_typeref(declaration->type);
- create_initializer_object(initializer, type, init_entity, NULL, 0);
+ set_entity_initializer(init_entity, irinitializer);
- assert(current_ir_graph == get_const_code_irg());
- current_ir_graph = old_current_ir_graph;
-
- ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
- ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
+ ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
+ 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);
set_store(copyb_mem);
}
-static void create_initializer(declaration_t *declaration)
+static void create_initializer_local_variable_entity(entity_t *entity)
+{
+ 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_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) {
+ type_t *type = entity->declaration.type;
+ type_qualifiers_t tq = get_type_qualifier(type, true);
+
+ if (initializer->kind == INITIALIZER_VALUE) {
initializer_value_t *initializer_value = &initializer->value;
+ dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
ir_node *value = expression_to_firm(initializer_value->value);
+ value = do_strict_conv(dbgi, value);
- if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
- set_value(declaration->v.value_number, value);
+ if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
+ set_value(entity->variable.v.value_number, value);
} 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) {
+ set_entity_variability(irentity, variability_constant);
+ } else {
+ set_entity_variability(irentity, variability_initialized);
+ }
+ set_atomic_ent_value(irentity, value);
+ }
} else {
- assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY
- || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
+ assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY ||
+ declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
- ir_entity *entity = declaration->v.entity;
- set_entity_variability(entity, variability_initialized);
+ ir_entity *irentity = entity->variable.v.entity;
+ ir_initializer_t *irinitializer
+ = create_ir_initializer(initializer, type);
- type_t *type = skip_typeref(declaration->type);
- create_initializer_object(initializer, type, entity, NULL, 0);
+ if (tq & TYPE_QUALIFIER_CONST) {
+ set_entity_variability(irentity, variability_constant);
+ } else {
+ set_entity_variability(irentity, variability_initialized);
+ }
+ set_entity_initializer(irentity, irinitializer);
}
}
+static void create_variable_length_array(entity_t *entity)
+{
+ 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(get_cur_block() != NULL);
+
+ 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);
+ 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);
+
+ 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);
- if(is_type_array(type) || is_type_compound(type)) {
+ /* is it a variable length array? */
+ 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)) {
+ needs_entity = true;
+ } 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,
+ (variable_t*) &entity->variable);
++next_value_number_function;
}
-
- create_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);
+ type_t *const type = skip_typeref(entity->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);
+ dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
- 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);
+ 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(global_type, id, irtype, dbgi);
+
+ if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
+ set_entity_volatility(irentity, volatility_is_volatile);
+ }
+
+ entity->declaration.kind = DECLARATION_KIND_GLOBAL_VARIABLE;
+ entity->variable.v.entity = irentity;
+ set_entity_ld_ident(irentity, create_ld_ident(irentity, entity));
+ set_entity_variability(irentity, variability_uninitialized);
+ set_entity_visibility(irentity, visibility_local);
+ set_entity_allocation(irentity, allocation_static);
ir_graph *const old_current_ir_graph = current_ir_graph;
current_ir_graph = get_const_code_irg();
- create_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)
{
- if(get_cur_block() == NULL)
+ 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);
+ type_t *type = current_function_entity->declaration.type;
+ ir_type *func_irtype = get_ir_type(type);
ir_node *in[1];
int in_len;
- if(get_method_n_ress(func_irtype) > 0) {
+ if (get_method_n_ress(func_irtype) > 0) {
ir_type *res_type = get_method_res_type(func_irtype, 0);
- if(statement->value != NULL) {
+ if (statement->value != NULL) {
ir_node *node = expression_to_firm(statement->value);
node = do_strict_conv(dbgi, node);
in[0] = node;
} else {
ir_mode *mode;
- if(is_compound_type(res_type)) {
+ if (is_compound_type(res_type)) {
mode = mode_P_data;
} else {
mode = get_type_mode(res_type);
in_len = 1;
} else {
/* build return_value for its side effects */
- if(statement->value != NULL) {
+ if (statement->value != NULL) {
expression_to_firm(statement->value);
}
in_len = 0;
static ir_node *expression_statement_to_firm(expression_statement_t *statement)
{
- if(get_cur_block() == NULL)
+ if (get_cur_block() == NULL)
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
+ for ( ; statement != NULL; statement = statement->base.next) {
+ if (statement->base.next == NULL
&& statement->kind == STATEMENT_EXPRESSION) {
result = expression_statement_to_firm(
&statement->expression);
return result;
}
-static void create_local_declaration(declaration_t *declaration)
+static void create_global_variable(entity_t *entity)
{
- if(declaration->symbol == NULL)
- return;
+ assert(entity->kind == ENTITY_VARIABLE);
+
+ ir_visibility vis;
+ ir_type *var_type;
+ switch ((storage_class_tag_t) entity->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;
- type_t *type = skip_typeref(declaration->type);
+ case STORAGE_CLASS_THREAD:
+ vis = visibility_external_visible;
+ goto tls_var;
- switch ((storage_class_tag_t) declaration->storage_class) {
+ 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_variable_entity(entity,
+ DECLARATION_KIND_GLOBAL_VARIABLE,
+ var_type);
+ /* Matze: I'm confused, shouldn't we only be here when creating
+ * variables? */
+#if 0
+ if (!is_type_function(skip_typeref(entity->declaration.type))) {
+ set_entity_visibility(declaration->v.entity, vis);
+ }
+#else
+ set_entity_visibility(entity->variable.v.entity, vis);
+#endif
+
+ return;
+
+ case STORAGE_CLASS_TYPEDEF:
+ case STORAGE_CLASS_AUTO:
+ case STORAGE_CLASS_REGISTER:
+ break;
+ }
+ panic("Invalid storage class for global variable");
+}
+
+static void create_local_declaration(entity_t *entity)
+{
+ assert(is_declaration(entity));
+
+ /* construct type */
+ (void) get_ir_type(entity->declaration.type);
+ if (entity->base.symbol == NULL) {
+ return;
+ }
+
+ switch ((storage_class_tag_t) entity->declaration.storage_class) {
case STORAGE_CLASS_STATIC:
- create_local_static_variable(declaration);
+ create_local_static_variable(entity);
return;
- case STORAGE_CLASS_ENUM_ENTRY:
- panic("enum entry declaration in local block found");
case STORAGE_CLASS_EXTERN:
- panic("extern declaration in local block found");
+ if (entity->kind == ENTITY_FUNCTION) {
+ assert(entity->function.statement == NULL);
+ get_function_entity(entity);
+ } 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)) {
- panic("nested functions not supported yet");
+ if (entity->kind == ENTITY_FUNCTION) {
+ if (entity->function.statement != NULL) {
+ get_function_entity(entity);
+ entity->declaration.kind = DECLARATION_KIND_INNER_FUNCTION;
+ enqueue_inner_function(entity);
+ } else {
+ get_function_entity(entity);
+ }
} else {
- create_local_variable(declaration);
+ create_local_variable(entity);
}
return;
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 initialize_local_declaration(entity_t *entity)
+{
+ if (entity->base.symbol == NULL)
+ 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_UNKNOWN:
+ panic("can't initialize unknown declaration");
+ }
+ panic("invalid declaration kind");
+}
+
static void declaration_statement_to_firm(declaration_statement_t *statement)
{
- declaration_t *declaration = statement->declarations_begin;
- declaration_t *end = statement->declarations_end->next;
- for( ; declaration != end; declaration = declaration->next) {
- if(declaration->namespc != NAMESPACE_NORMAL)
+ entity_t *entity = statement->declarations_begin;
+ entity_t *end = statement->declarations_end->base.next;
+ for ( ; entity != end; entity = entity->base.next) {
+ if (!is_declaration(entity))
continue;
- create_local_declaration(declaration);
+ initialize_local_declaration(entity);
}
}
{
ir_node *cur_block = get_cur_block();
- ir_node *fallthrough_block = new_immBlock();
+ ir_node *fallthrough_block = NULL;
/* the true (blocks) */
- ir_node *true_block;
+ ir_node *true_block = NULL;
if (statement->true_statement != NULL) {
true_block = new_immBlock();
statement_to_firm(statement->true_statement);
- if(get_cur_block() != NULL) {
+ if (get_cur_block() != NULL) {
ir_node *jmp = new_Jmp();
+ if (fallthrough_block == NULL)
+ fallthrough_block = new_immBlock();
add_immBlock_pred(fallthrough_block, jmp);
}
- } else {
- true_block = fallthrough_block;
}
/* the false (blocks) */
- ir_node *false_block;
- if(statement->false_statement != NULL) {
+ ir_node *false_block = NULL;
+ if (statement->false_statement != NULL) {
false_block = new_immBlock();
statement_to_firm(statement->false_statement);
- if(get_cur_block() != NULL) {
+ if (get_cur_block() != NULL) {
ir_node *jmp = new_Jmp();
+ if (fallthrough_block == NULL)
+ fallthrough_block = new_immBlock();
add_immBlock_pred(fallthrough_block, jmp);
}
- } else {
- false_block = fallthrough_block;
}
/* create the condition */
- if(cur_block != NULL) {
+ if (cur_block != NULL) {
+ if (true_block == NULL || false_block == NULL) {
+ if (fallthrough_block == NULL)
+ fallthrough_block = new_immBlock();
+ if (true_block == NULL)
+ true_block = fallthrough_block;
+ if (false_block == NULL)
+ false_block = fallthrough_block;
+ }
+
set_cur_block(cur_block);
create_condition_evaluation(statement->condition, true_block,
false_block);
}
mature_immBlock(true_block);
- if(false_block != fallthrough_block) {
+ if (false_block != fallthrough_block && false_block != NULL) {
mature_immBlock(false_block);
}
- mature_immBlock(fallthrough_block);
+ if (fallthrough_block != NULL) {
+ mature_immBlock(fallthrough_block);
+ }
set_cur_block(fallthrough_block);
}
static void while_statement_to_firm(while_statement_t *statement)
{
ir_node *jmp = NULL;
- if(get_cur_block() != NULL) {
+ if (get_cur_block() != NULL) {
jmp = new_Jmp();
}
/* create the header block */
ir_node *header_block = new_immBlock();
- if(jmp != NULL) {
+ if (jmp != NULL) {
add_immBlock_pred(header_block, jmp);
}
- /* the false block */
- ir_node *false_block = new_immBlock();
-
/* 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;
+ ir_node *old_continue_label = continue_label;
+ ir_node *old_break_label = break_label;
+ continue_label = header_block;
+ break_label = NULL;
- body_block = new_immBlock();
- statement_to_firm(statement->body);
+ ir_node *body_block = new_immBlock();
+ statement_to_firm(statement->body);
+ ir_node *false_block = break_label;
- assert(continue_label == header_block);
- assert(break_label == false_block);
- continue_label = old_continue_label;
- break_label = old_break_label;
+ assert(continue_label == header_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);
- }
- } else {
- body_block = header_block;
+ if (get_cur_block() != NULL) {
+ jmp = new_Jmp();
+ add_immBlock_pred(header_block, jmp);
}
- /* create the condition */
- set_cur_block(header_block);
+ /* shortcut for while(true) */
+ if (is_constant_expression(statement->condition)
+ && fold_constant(statement->condition) != 0) {
+ set_cur_block(header_block);
+ ir_node *header_jmp = new_Jmp();
+ add_immBlock_pred(body_block, header_jmp);
+
+ keep_alive(body_block);
+ keep_all_memory(body_block);
+ set_cur_block(body_block);
+ } else {
+ if (false_block == NULL) {
+ false_block = new_immBlock();
+ }
+
+ /* create the condition */
+ set_cur_block(header_block);
+
+ create_condition_evaluation(statement->condition, body_block,
+ false_block);
+ }
- create_condition_evaluation(statement->condition, body_block, false_block);
mature_immBlock(body_block);
- mature_immBlock(false_block);
mature_immBlock(header_block);
+ if (false_block != NULL) {
+ mature_immBlock(false_block);
+ }
set_cur_block(false_block);
}
static void do_while_statement_to_firm(do_while_statement_t *statement)
{
ir_node *jmp = NULL;
- if(get_cur_block() != NULL) {
+ if (get_cur_block() != NULL) {
jmp = new_Jmp();
}
/* 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) {
+ if (jmp != NULL) {
add_immBlock_pred(body_block, jmp);
}
- 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);
+ statement_to_firm(statement->body);
+ ir_node *false_block = break_label;
- assert(continue_label == header_block);
- assert(break_label == false_block);
- continue_label = old_continue_label;
- break_label = old_break_label;
+ assert(continue_label == header_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;
- }
+ if (get_cur_block() != NULL) {
+ ir_node *body_jmp = new_Jmp();
+ add_immBlock_pred(header_block, body_jmp);
+ mature_immBlock(header_block);
}
- ir_node *body_jmp = new_Jmp();
- add_immBlock_pred(header_block, body_jmp);
- mature_immBlock(header_block);
+ if (false_block == NULL) {
+ false_block = new_immBlock();
+ }
/* create the condition */
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);
+ if (false_block != NULL) {
+ mature_immBlock(false_block);
+ }
set_cur_block(false_block);
}
static void for_statement_to_firm(for_statement_t *statement)
{
ir_node *jmp = NULL;
+
+ /* create declarations */
+ entity_t *entity = statement->scope.entities;
+ for ( ; entity != NULL; entity = entity->base.next) {
+ if (!is_declaration(entity))
+ continue;
+
+ create_local_declaration(entity);
+ }
+
if (get_cur_block() != NULL) {
- if(statement->initialisation != NULL) {
- expression_to_firm(statement->initialisation);
+ entity = statement->scope.entities;
+ for ( ; entity != NULL; entity = entity->base.next) {
+ if (!is_declaration(entity))
+ continue;
+
+ initialize_local_declaration(entity);
}
- /* create declarations */
- declaration_t *declaration = statement->scope.declarations;
- for( ; declaration != NULL; declaration = declaration->next) {
- create_local_declaration(declaration);
+ if (statement->initialisation != NULL) {
+ expression_to_firm(statement->initialisation);
}
jmp = new_Jmp();
false_block);
} else {
keep_alive(header_block);
+ keep_all_memory(header_block);
jmp = new_Jmp();
add_immBlock_pred(body_block, jmp);
}
static void create_jump_statement(const statement_t *statement,
ir_node *target_block)
{
- if(get_cur_block() == NULL)
+ if (get_cur_block() == NULL)
return;
dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
set_cur_block(NULL);
}
-static void switch_statement_to_firm(const switch_statement_t *statement)
+static ir_node *get_break_label(void)
+{
+ if (break_label == NULL) {
+ ir_node *cur_block = get_cur_block();
+ break_label = new_immBlock();
+ set_cur_block(cur_block);
+ }
+ return break_label;
+}
+
+static void switch_statement_to_firm(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;
+ saw_default_label = false;
current_switch_cond = cond;
- break_label = break_block;
+ break_label = NULL;
+ switch_statement_t *const old_switch = current_switch;
+ current_switch = statement;
+
+ /* determine a free number for the default label */
+ unsigned long num_cases = 0;
+ long def_nr = 0;
+ for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
+ if (l->expression == NULL) {
+ /* default case */
+ continue;
+ }
+ if (l->last_case >= l->first_case)
+ num_cases += l->last_case - l->first_case + 1;
+ if (l->last_case > def_nr)
+ def_nr = l->last_case;
+ }
+
+ if (def_nr == INT_MAX) {
+ /* Bad: an overflow will occurr, we cannot be sure that the
+ * maximum + 1 is a free number. Scan the values a second
+ * time to find a free number.
+ */
+ unsigned char *bits = xmalloc((num_cases + 7) >> 3);
+
+ memset(bits, 0, (num_cases + 7) >> 3);
+ for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
+ if (l->expression == NULL) {
+ /* default case */
+ continue;
+ }
+ unsigned long start = l->first_case > 0 ? (unsigned long)l->first_case : 0;
+ if (start < num_cases && l->last_case >= 0) {
+ unsigned long end = (unsigned long)l->last_case < num_cases ?
+ (unsigned long)l->last_case : num_cases - 1;
+ for (unsigned long cns = start; cns <= end; ++cns) {
+ bits[cns >> 3] |= (1 << (cns & 7));
+ }
+ }
+ }
+ /* We look at the first num_cases constants:
+ * Either they are densed, so we took the last (num_cases)
+ * one, or they are non densed, so we will find one free
+ * there...
+ */
+ unsigned long i;
+ for (i = 0; i < num_cases; ++i)
+ if ((bits[i >> 3] & (1 << (i & 7))) == 0)
+ break;
+
+ free(bits);
+ def_nr = i;
+ } else {
+ ++def_nr;
+ }
+ statement->default_proj_nr = def_nr;
if (statement->body != NULL) {
statement_to_firm(statement->body);
}
- if(get_cur_block() != NULL) {
+ if (get_cur_block() != NULL) {
ir_node *jmp = new_Jmp();
- add_immBlock_pred(break_block, jmp);
+ add_immBlock_pred(get_break_label(), jmp);
}
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);
+ statement->default_proj_nr);
+ add_immBlock_pred(get_break_label(), proj);
+ }
+
+ if (break_label != NULL) {
+ mature_immBlock(break_label);
}
+ set_cur_block(break_label);
assert(current_switch_cond == cond);
- assert(break_label == break_block);
+ current_switch = old_switch;
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);
}
static void case_label_to_firm(const case_label_statement_t *statement)
{
+ if (statement->is_empty_range)
+ return;
+
dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
- /* let's create a node and hope firm constant folding creates a Const
- * node... */
ir_node *proj;
- set_cur_block(get_nodes_block(current_switch_cond));
- if(statement->expression) {
- long pn = fold_constant(statement->expression);
- 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);
+ ir_node *old_block = get_nodes_block(current_switch_cond);
+ ir_node *block = new_immBlock();
+
+ set_cur_block(old_block);
+ if (statement->expression != NULL) {
+ long pn = statement->first_case;
+ long end_pn = statement->last_case;
+ assert(pn <= end_pn);
+ /* create jumps for all cases in the given range */
+ do {
+ proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
+ add_immBlock_pred(block, proj);
+ } while(pn++ < end_pn);
} else {
saw_default_label = true;
proj = new_d_defaultProj(dbgi, current_switch_cond,
- MAGIC_DEFAULT_PN_NUMBER);
+ current_switch->default_proj_nr);
+
+ add_immBlock_pred(block, proj);
}
- ir_node *block = new_immBlock();
if (fallthrough != NULL) {
add_immBlock_pred(block, fallthrough);
}
- add_immBlock_pred(block, proj);
mature_immBlock(block);
+ set_cur_block(block);
- if(statement->statement != NULL) {
+ if (statement->statement != NULL) {
statement_to_firm(statement->statement);
}
}
-static ir_node *get_label_block(declaration_t *label)
-{
- assert(label->namespc == NAMESPACE_LABEL);
-
- if(label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
- return label->v.block;
- }
- assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
-
- ir_node *old_cur_block = get_cur_block();
- ir_node *block = new_immBlock();
- set_cur_block(old_cur_block);
-
- label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
- label->v.block = block;
-
- ARR_APP1(ir_node *, imature_blocks, block);
-
- return block;
-}
-
static void label_to_firm(const label_statement_t *statement)
{
ir_node *block = get_label_block(statement->label);
- if(get_cur_block() != NULL) {
+ if (get_cur_block() != NULL) {
ir_node *jmp = new_Jmp();
add_immBlock_pred(block, jmp);
}
set_cur_block(block);
keep_alive(block);
+ keep_all_memory(block);
- if(statement->statement != NULL) {
+ if (statement->statement != NULL) {
statement_to_firm(statement->statement);
}
}
static void goto_to_firm(const goto_statement_t *statement)
{
- if(get_cur_block() == NULL)
+ if (get_cur_block() == NULL)
return;
- ir_node *block = get_label_block(statement->label);
- ir_node *jmp = new_Jmp();
- add_immBlock_pred(block, jmp);
+ if (statement->expression) {
+ ir_node *irn = expression_to_firm(statement->expression);
+ dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
+ ir_node *ijmp = new_d_IJmp(dbgi, irn);
+ set_irn_link(ijmp, ijmp_list);
+ ijmp_list = ijmp;
+ } else {
+ ir_node *block = get_label_block(statement->label);
+ ir_node *jmp = new_Jmp();
+ add_immBlock_pred(block, jmp);
+ }
set_cur_block(NULL);
}
-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;
-
-#if 0
static void asm_statement_to_firm(const asm_statement_t *statement)
{
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 (strcmp(clobber_str, "memory") == 0) {
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;
+ 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];
+
+ 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);
+
+ if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
+ errorf(&statement->base.source_position,
+ "some constraints in '%s' are not supported", constraints);
+ continue;
+ }
+ 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,
+ "no write flag specified for output constraints '%s'",
+ constraints);
+ continue;
+ }
+
+ 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", pos);
+
+ ir_asm_constraint constraint;
+ constraint.pos = pos;
+ constraint.constraint = new_id_from_str(buf);
+ constraint.mode = get_ir_mode(expr->base.type);
+ tmp_in_constraints[in_size] = constraint;
+ ins[in_size] = value;
+
+ ++in_size;
}
+
+ 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;
+
+ /* we need to attach the address to the inputs */
+ expression_t *expr = argument->expression;
+
+ ir_asm_constraint constraint;
+ constraint.pos = pos;
+ constraint.constraint = new_id_from_str(constraints);
+ constraint.mode = NULL;
+ tmp_in_constraints[in_size] = constraint;
+
+ 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;
}
- obstack_1grow(&asm_obst, '\0');
- const char *constraint_string = obstack_finish(&asm_obst);
- needs_memory |= supports_memop;
- if(supports_memop) {
+ ir_asm_constraint constraint;
+ constraint.pos = pos;
+ constraint.constraint = new_id_from_str(constraints);
+ constraint.mode = get_ir_mode(argument->expression->base.type);
+
+ obstack_grow(&asm_obst, &constraint, sizeof(constraint));
+ }
+ assert(obstack_object_size(&asm_obst)
+ == out_size * sizeof(ir_asm_constraint));
+ ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
+
+
+ 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);
+ if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
+ errorf(&statement->base.source_position,
+ "some constraints in '%s' are not supported", constraints);
+ continue;
}
+ 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;
+ }
+
+ if (needs_memory) {
+ ir_asm_constraint constraint;
+ constraint.pos = next_pos++;
+ constraint.constraint = new_id_from_str("");
+ constraint.mode = mode_M;
+
+ obstack_grow(&asm_obst, &constraint, sizeof(constraint));
+ ins[in_size++] = get_store();
}
+ assert(obstack_object_size(&asm_obst)
+ == in_size * sizeof(ir_asm_constraint));
+ ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
+
+ /* create asm node */
+ dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
+
+ ident *asm_text = new_id_from_str(statement->asm_text.begin);
+
+ ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
+ out_size, output_constraints,
+ n_clobbers, clobbers, asm_text);
+
+ if (statement->is_volatile) {
+ set_irn_pinned(node, op_pin_state_pinned);
+ } else {
+ set_irn_pinned(node, op_pin_state_floats);
+ }
+
+ /* create output projs & connect them */
+ if (needs_memory) {
+ ir_node *projm = new_Proj(node, mode_M, out_size+1);
+ set_store(projm);
+ }
+
+ 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(out_expr->base.type);
+ ir_node *proj = new_Proj(node, mode, pn);
+ ir_node *addr = out_addrs[i];
+
+ set_value_for_expression_addr(out_expr, proj, addr);
+ }
+}
+
+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");
}
-#endif
+static void leave_statement_to_firm(leave_statement_t *statement) {
+ errorf(&statement->base.source_position, "__leave not supported yet");
+}
+
+/**
+ * Transform a statement.
+ */
static void statement_to_firm(statement_t *statement)
{
- switch(statement->kind) {
+#ifndef NDEBUG
+ assert(!statement->base.transformed);
+ statement->base.transformed = true;
+#endif
+
+ 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;
declaration_statement_to_firm(&statement->declaration);
return;
case STATEMENT_BREAK:
- create_jump_statement(statement, break_label);
+ create_jump_statement(statement, get_break_label());
return;
case STATEMENT_CONTINUE:
create_jump_statement(statement, continue_label);
case STATEMENT_LABEL:
label_to_firm(&statement->label);
return;
+ case STATEMENT_LOCAL_LABEL:
+ /* local labels transform the semantics of labels while parsing
+ * they don't need any special treatment here */
+ return;
case STATEMENT_GOTO:
goto_to_firm(&statement->gotos);
return;
case STATEMENT_ASM:
- //asm_statement_to_firm(&statement->asms);
- //return;
- break;
+ 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");
}
-static int count_decls_in_expression(const expression_t *expression);
-
-static int count_local_declarations(const declaration_t * decl,
- const declaration_t *const end)
+static int count_local_variables(const entity_t *entity,
+ const entity_t *const end)
{
int count = 0;
- for (; decl != end; decl = decl->next) {
- if(decl->namespc != NAMESPACE_NORMAL)
+ for (; entity != end; entity = entity->base.next) {
+ if (entity->kind != ENTITY_VARIABLE)
continue;
- const type_t *type = skip_typeref(decl->type);
- if (!decl->address_taken && is_type_scalar(type))
+ type_t *type = skip_typeref(entity->declaration.type);
+
+ if (!entity->variable.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);
- }
}
return count;
}
-static int count_decls_in_expression(const expression_t *expression) {
- if(expression == NULL)
- return 0;
-
- switch(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);
+static void count_local_variables_in_stmt(statement_t *stmt, void *const env)
+{
+ int *const count = env;
- default:
+ 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->base.next);
break;
}
- /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
- * (or implement all the missing expressions here/implement a walker)
- */
-
- return 0;
-}
-
-static int count_decls_in_stmts(const statement_t *stmt)
-{
- int count = 0;
- for (; stmt != NULL; stmt = stmt->base.next) {
- switch (stmt->kind) {
- 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;
- }
-
- 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;
- }
-
- 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;
- }
-
- 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;
- }
-
- 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_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_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;
- }
-
- case STATEMENT_ASM:
- case STATEMENT_BREAK:
- case STATEMENT_CONTINUE:
- break;
-
- case STATEMENT_EXPRESSION: {
- const expression_statement_t *expr_stmt = &stmt->expression;
- count += count_decls_in_expression(expr_stmt->expression);
- break;
- }
-
- case STATEMENT_GOTO:
- case STATEMENT_INVALID:
- break;
+ case STATEMENT_FOR:
+ *count += count_local_variables(stmt->fors.scope.entities, NULL);
+ break;
- case STATEMENT_RETURN: {
- const return_statement_t *ret_stmt = &stmt->returns;
- count += count_decls_in_expression(ret_stmt->value);
- break;
- }
- }
+ default:
+ break;
}
- return count;
}
-static int get_function_n_local_vars(declaration_t *declaration)
+static int get_function_n_local_vars(entity_t *entity)
{
int count = 0;
/* count parameters */
- count += count_local_declarations(declaration->scope.declarations, NULL);
+ count += count_local_variables(entity->function.parameters.entities, NULL);
/* count local variables declared in body */
- count += count_decls_in_stmts(declaration->init.statement);
-
+ walk_statements(entity->function.statement, count_local_variables_in_stmt,
+ &count);
return count;
}
-static void initialize_function_parameters(declaration_t *declaration)
+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);
-
- 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;
+ assert(entity->kind == ENTITY_FUNCTION);
+ 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(entity->declaration.type);
+
+ int n = 0;
+ entity_t *parameter = entity->function.parameters.entities;
+ for ( ; parameter != NULL; parameter = parameter->base.next, ++n) {
+ assert(parameter->kind == ENTITY_VARIABLE);
+ assert(parameter->declaration.kind == DECLARATION_KIND_UNKNOWN);
+ type_t *type = skip_typeref(parameter->declaration.type);
+
+ bool needs_entity = parameter->variable.address_taken;
assert(!is_type_array(type));
- if(is_type_compound(type)) {
+ if (is_type_compound(type)) {
needs_entity = true;
}
- if(needs_entity) {
+ if (needs_entity) {
ir_entity *entity = get_method_value_param_ent(function_irtype, n);
- ident *id = new_id_from_str(parameter->symbol->string);
+ ident *id = new_id_from_str(parameter->base.symbol->string);
set_entity_ident(entity, id);
- parameter->declaration_kind
+ parameter->declaration.kind
= DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
- parameter->v.entity = entity;
+ parameter->variable.v.entity = entity;
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_type *param_irtype = get_method_param_type(function_irtype, n);
+ ir_mode *param_mode = get_type_mode(param_irtype);
+
+ long pn = n;
+ ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn);
+
+ ir_mode *mode = get_ir_mode(type);
+ value = create_conv(NULL, value, mode);
+ value = do_strict_conv(NULL, value);
- 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);
+ parameter->declaration.kind = DECLARATION_KIND_LOCAL_VARIABLE;
+ parameter->variable.v.value_number = next_value_number_function;
+ set_irg_loc_description(current_ir_graph, next_value_number_function,
+ (variable_t*) ¶meter->variable);
++next_value_number_function;
- set_value(parameter->v.value_number, proj);
+ set_value(parameter->variable.v.value_number, value);
}
}
}
}
-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);
+ ident *id = id_unique(unique_template);
+ ir_type *ptr_type = new_type_pointer(id, method_type, mode_P_code);
+
+ 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, NULL);
+
+ set_entity_compiler_generated(ptr, 1);
+ set_entity_variability(ptr, variability_constant);
+ 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.
+ */
+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);
- if(declaration->init.statement == NULL)
+ if (entity->function.statement == NULL)
return;
- current_function_decl = declaration;
- current_function_name = NULL;
+ 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(imature_blocks == NULL);
- imature_blocks = NEW_ARR_F(ir_node*, 0);
+ 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();
+
+ ir_graph *old_current_function = current_function;
+ current_function = irg;
+
+ set_irg_fp_model(irg, firm_opt.fp_model);
+ tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0);
+ set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
+
+ ir_node *first_block = get_cur_block();
/* 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);
- 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 (get_cur_block() != NULL) {
+ 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
ret = new_Return(get_store(), 0, NULL);
} else {
ir_mode *mode;
- if(is_type_scalar(return_type)) {
+ if (is_type_scalar(return_type)) {
mode = get_ir_mode(func_type->return_type);
} else {
mode = mode_P_data;
ir_node *in[1];
/* ยง5.1.2.2.3 main implicitly returns 0 */
- if (strcmp(declaration->symbol->string, "main") == 0) {
+ if (strcmp(entity->base.symbol->string, "main") == 0) {
in[0] = new_Const(mode, 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]);
+ bool has_computed_gotos = false;
+ 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);
+ has_computed_gotos = true;
+ }
+ mature_immBlock(label->block);
+ }
+ if (has_computed_gotos) {
+ /* if we have computed goto's in the function, we cannot inline it */
+ if (get_irg_inline_property(irg) >= irg_inline_recomended) {
+ warningf(&entity->base.source_position,
+ "function '%Y' can never be inlined because it contains a computed goto",
+ entity->base.symbol);
+ }
+ set_irg_inline_property(irg, irg_inline_forbidden);
}
- DEL_ARR_F(imature_blocks);
- imature_blocks = NULL;
+
+ DEL_ARR_F(all_labels);
+ all_labels = NULL;
mature_immBlock(first_block);
mature_immBlock(end_block);
int n = get_compound_n_members(frame_type);
int align_all = 4;
int offset = 0;
- for(int i = 0; i < n; ++i) {
+ for (int i = 0; i < n; ++i) {
ir_entity *entity = get_compound_member(frame_type, i);
ir_type *entity_type = get_entity_type(entity);
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_type_size_bytes(frame_type, offset);
set_type_alignment_bytes(frame_type, align_all);
- set_type_state(frame_type, layout_fixed);
irg_vrfy(irg);
-}
-
-static void create_global_variable(declaration_t *declaration)
-{
- 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;
-
- 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);
-
- current_ir_graph = get_const_code_irg();
- create_initializer(declaration);
- return;
+ current_function = old_current_function;
- case STORAGE_CLASS_TYPEDEF:
- case STORAGE_CLASS_AUTO:
- case STORAGE_CLASS_REGISTER:
- case STORAGE_CLASS_ENUM_ENTRY:
- break;
+ /* create inner functions */
+ entity_t *inner;
+ for (inner = next_inner_function(); inner != NULL;
+ inner = next_inner_function()) {
+ create_function(inner);
}
- panic("Invalid storage class for global variable");
}
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) {
+ get_function_entity(entity);
+ } else if (entity->kind == ENTITY_VARIABLE) {
+ create_global_variable(entity);
}
}
- /* second pass: create code */
- 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)
- continue;
-
- type_t *type = declaration->type;
- if(type->kind != TYPE_FUNCTION)
+ /* second pass: create code/initializers */
+ entity = scope->entities;
+ for ( ; entity != NULL; entity = entity->base.next) {
+ if (entity->base.symbol == NULL)
continue;
- create_function(declaration);
+ if (entity->kind == ENTITY_FUNCTION) {
+ 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_variable_initializer(entity);
+ }
}
}
+static void set_be_option(const char *option)
+{
+ int res = firm_be_option(option);
+ assert(res);
+}
+
void init_ast2firm(void)
{
obstack_init(&asm_obst);
init_atomic_modes();
+ id_underscore = new_id_from_chars("_", 1);
+ id_imp = new_id_from_chars("__imp_", 6);
+
+ /* OS option must be set to the backend */
+ switch (firm_opt.os_support) {
+ case OS_SUPPORT_MINGW:
+ create_ld_ident = create_ld_ident_win32;
+ set_be_option("ia32-gasmode=mingw");
+ break;
+ case OS_SUPPORT_LINUX:
+ create_ld_ident = create_ld_ident_linux_elf;
+ set_be_option("ia32-gasmode=elf");
+ break;
+ case OS_SUPPORT_MACHO:
+ create_ld_ident = create_ld_ident_macho;
+ set_be_option("ia32-gasmode=macho");
+ set_be_option("ia32-stackalign=4");
+ set_be_option("pic");
+ break;
+ }
+
/* 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);
+ 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)
+ return;
+ ir_types_initialized = 1;
+
+ ir_type_int = get_ir_type(type_int);
+ 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);
}
void exit_ast2firm(void)
{
+ entitymap_destroy(&entitymap);
obstack_free(&asm_obst, NULL);
}
-void translation_unit_to_firm(translation_unit_t *unit)
+static void global_asm_to_firm(statement_t *s)
{
- 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);
+ for (; s != NULL; s = s->base.next) {
+ assert(s->kind == STATEMENT_ASM);
- ir_type_int = get_ir_type(type_int);
- 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_int); /* we don't have a real void
- type in firm */
+ 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;
- type_void->base.firm_type = ir_type_void;
+ ident *const id = new_id_from_chars(text, size);
+ add_irp_asm(id);
+ }
+}
+void translation_unit_to_firm(translation_unit_t *unit)
+{
/* just to be sure */
continue_label = NULL;
break_label = NULL;
current_switch_cond = NULL;
+ init_ir_types();
+ inner_functions = NEW_ARR_F(entity_t *, 0);
+
scope_to_firm(&unit->scope);
+ global_asm_to_firm(unit->global_asm);
+
+ DEL_ARR_F(inner_functions);
+ inner_functions = NULL;
+
+ current_ir_graph = NULL;
}
projects / cparser / blobdiff