#include <libfirm/firm.h>
#include <libfirm/adt/obst.h>
+#include <libfirm/be.h>
#include "ast2firm.h"
#include "lang_features.h"
#include "types.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_void;
static ir_type *ir_type_int;
-static type_t *type_const_char;
-
static int next_value_number_function;
static ir_node *continue_label;
static ir_node *break_label;
static ir_node *current_switch_cond;
static bool saw_default_label;
-static ir_node **imature_blocks;
+static ir_node **immature_blocks;
+static bool constant_folding;
static const declaration_t *current_function_decl;
static ir_node *current_function_name;
static ir_node *current_funcsig;
+static switch_statement_t *current_switch;
+
+static entitymap_t entitymap;
static struct obstack asm_obst;
{
const declaration_t *declaration = get_irg_loc_description(irg, pos);
- warningf(&declaration->source_position,
- "variable '%#T' might be used uninitialized",
- declaration->type, declaration->symbol);
+ if (declaration != NULL) {
+ warningf(&declaration->source_position,
+ "variable '%#T' might be used uninitialized",
+ declaration->type, declaration->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;
}
{
unsigned flags = get_atomic_type_flags(kind);
unsigned size = get_atomic_type_size(kind);
- if( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT))
+ if ( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT))
&& !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) {
char name[64];
ir_mode_sort sort;
ir_mode_arithmetic arithmetic;
unsigned modulo_shift;
- if(flags & ATOMIC_TYPE_FLAG_INTEGER) {
+ if (flags & ATOMIC_TYPE_FLAG_INTEGER) {
assert(! (flags & ATOMIC_TYPE_FLAG_FLOAT));
snprintf(name, sizeof(name), "i%s%d", is_signed?"":"u", bit_size);
sort = irms_int_number;
static unsigned get_type_size_const(type_t *type)
{
- type = skip_typeref(type);
-
switch(type->kind) {
case TYPE_ERROR:
panic("error type occurred");
{
type = skip_typeref(type);
- if(is_type_array(type) && type->array.is_vla) {
+ if (is_type_array(type) && type->array.is_vla) {
ir_node *size_node = type->array.size_node;
- if(size_node == NULL) {
+ if (size_node == NULL) {
size_node = expression_to_firm(type->array.size_expression);
assert(!is_Const(size_node));
type->array.size_node = size_node;
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) {
+ declaration_t *decl = type->compound.declaration;
+ type = decl->scope.declarations->type;
+ }
+
+ return type;
+}
+
static ir_type *create_method_type(const function_type_t *function_type)
{
type_t *return_type = function_type->return_type;
dbg_info *dbgi = get_dbg_info(&function_type->base.source_position);
ir_type *irtype = new_d_type_method(id, n_parameters, n_results, dbgi);
- 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) {
+ 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. */
+ warningf(&function_type->base.source_position, "THISCALL calling convention not supported yet");
+ break;
+ }
return irtype;
}
const int align = get_type_alignment_bytes(ir_element_type);
set_type_alignment_bytes(ir_type, align);
- if(type->size_constant) {
+ 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);
- if(elemsize % align > 0) {
+ if (elemsize % align > 0) {
elemsize += align - (elemsize % align);
}
set_type_size_bytes(ir_type, n_elements * elemsize);
static ir_type *create_bitfield_type(bitfield_type_t *const type)
{
type_t *base = skip_typeref(type->base_type);
- assert(base->kind == TYPE_ATOMIC);
+ assert(base->kind == TYPE_ATOMIC || base->kind == TYPE_ENUM);
ir_type *irbase = get_ir_type(base);
unsigned size = fold_constant(type->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);
declaration_t *declaration = type->declaration;
declaration_kind_t kind = (declaration_kind_t)declaration->declaration_kind;
- if(kind == DECLARATION_KIND_COMPOUND_TYPE_COMPLETE
+ if (kind == DECLARATION_KIND_COMPOUND_TYPE_COMPLETE
|| (kind == DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE
&& incomplete))
return declaration->v.irtype;
size_t bit_offset = 0;
size_t size = 0;
- if(irtype == NULL) {
+ if (irtype == NULL) {
symbol_t *symbol = declaration->symbol;
ident *id;
- if(symbol != NULL) {
+ if (symbol != NULL) {
id = new_id_from_str(symbol->string);
} else {
if (is_union) {
align_all = *outer_align;
}
- if(incomplete)
+ if (incomplete)
return irtype;
declaration->declaration_kind = DECLARATION_KIND_COMPOUND_TYPE_COMPLETE;
declaration_t *entry = declaration->scope.declarations;
for( ; entry != NULL; entry = entry->next) {
- if(entry->namespc != NAMESPACE_NORMAL)
+ if (entry->namespc != NAMESPACE_NORMAL)
continue;
size_t prev_offset = offset;
dbg_info *dbgi = get_dbg_info(&entry->source_position);
ident *ident;
- if(symbol != NULL) {
+ if (symbol != NULL) {
ident = new_id_from_str(symbol->string);
} else {
- if(entry_type->kind == TYPE_COMPOUND_STRUCT) {
+ 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) {
+ } 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;
}
ir_type *base_irtype;
- if(entry_type->kind == TYPE_BITFIELD) {
+ 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 base;
size_t bits_remainder;
- if(entry_type->kind == TYPE_BITFIELD) {
+ if (entry_type->kind == TYPE_BITFIELD) {
size_t size_bits = fold_constant(entry_type->bitfield.size);
size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
- 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;
}
size_t misalign = offset % align_all;
- if(misalign > 0 || bit_offset > 0) {
+ if (misalign > 0 || bit_offset > 0) {
size += align_all - misalign;
}
- if(outer_offset != NULL) {
+ if (outer_offset != NULL) {
if (!is_union) {
*outer_offset = offset;
} else {
}
if (align_all > *outer_align) {
- if(align_all % *outer_align != 0) {
+ if (align_all % *outer_align != 0) {
panic("uneven alignments not supported yet");
}
*outer_align = align_all;
tarval *const one = get_mode_one(mode);
tarval * tv_next = get_tarval_null(mode);
+ bool constant_folding_old = constant_folding;
+ constant_folding = true;
+
declaration_t *declaration = type->declaration->next;
for (; declaration != NULL; declaration = declaration->next) {
if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY)
tv_next = tarval_add(tv_next, one);
}
+ constant_folding = constant_folding_old;
+
return ir_type_int;
}
case TYPE_COMPOUND_STRUCT:
return create_compound_type(&type->compound, NULL, NULL, NULL,
true, COMPOUND_IS_STRUCT);
- break;
case TYPE_COMPOUND_UNION:
return create_compound_type(&type->compound, NULL, NULL, NULL,
true, COMPOUND_IS_UNION);
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;
}
id = mangle(id_underscore, get_entity_ident(ent));
}
- decl_modifiers_t decl_modifiers = declaration->decl_modifiers;
+ decl_modifiers_t decl_modifiers = declaration->modifiers;
if (decl_modifiers & DM_DLLIMPORT) {
/* add prefix for imported symbols */
id = mangle(id_imp, id);
declaration_t *declaration);
create_ld_ident_func create_ld_ident = create_ld_ident_linux_elf;
+/**
+ * Handle GNU attributes for entities
+ *
+ * @param ent the entity
+ * @param decl the routine declaration
+ */
+static void handle_gnu_attributes_ent(ir_entity *ent, declaration_t *decl)
+{
+ if (decl->modifiers & DM_PURE) {
+ /* TRUE if the declaration includes the GNU
+ __attribute__((pure)) specifier. */
+ set_entity_additional_property(ent, mtp_property_pure);
+ }
+ if (decl->modifiers & DM_USED) {
+ /* TRUE if the declaration includes the GNU
+ __attribute__((used)) specifier. */
+ set_entity_stickyness(ent, stickyness_sticky);
+ }
+}
+
/**
* Creates an entity representing a function.
*
*/
static ir_entity *get_function_entity(declaration_t *declaration)
{
- if(declaration->declaration_kind == DECLARATION_KIND_FUNCTION)
+ if (declaration->declaration_kind == DECLARATION_KIND_FUNCTION)
return declaration->v.entity;
assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
ir_type *ir_type_method = get_ir_type(declaration->type);
assert(is_Method_type(ir_type_method));
- dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
- ir_entity *const entity = new_d_entity(global_type, id, ir_type_method, dbgi);
- set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
- if(declaration->storage_class == STORAGE_CLASS_STATIC &&
- declaration->init.statement == NULL) {
- /* this entity was declared, but never defined */
- set_entity_peculiarity(entity, peculiarity_description);
+ /* already an entity defined? */
+ ir_entity *entity = entitymap_get(&entitymap, symbol);
+ if (entity != NULL) {
+ if (get_entity_visibility(entity) == visibility_external_allocated
+ && declaration->init.statement != NULL) {
+ set_entity_visibility(entity, visibility_external_visible);
+ }
+ goto entity_created;
}
- if(declaration->storage_class == STORAGE_CLASS_STATIC
- || declaration->is_inline) {
+
+ dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
+ entity = new_d_entity(global_type, id, ir_type_method, dbgi);
+ set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
+
+ handle_gnu_attributes_ent(entity, declaration);
+
+ /* 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)declaration->storage_class;
+ bool const is_inline = declaration->is_inline;
+ bool const has_body = declaration->init.statement != NULL;
+ if (is_inline && storage_class == STORAGE_CLASS_NONE && has_body) {
+ set_entity_visibility(entity, 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(entity, peculiarity_description);
+ }
set_entity_visibility(entity, visibility_local);
- } else if(declaration->init.statement != NULL) {
+ } else if (has_body) {
set_entity_visibility(entity, visibility_external_visible);
} else {
set_entity_visibility(entity, visibility_external_allocated);
}
set_entity_allocation(entity, allocation_static);
- declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
- declaration->v.entity = entity;
-
/* We should check for file scope here, but as long as we compile C only
this is not needed. */
if (! firm_opt.freestanding) {
}
}
+ entitymap_insert(&entitymap, symbol, entity);
+
+entity_created:
+ declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
+ declaration->v.entity = entity;
+
return entity;
}
char buf[128];
tarval *tv;
size_t len;
- if(mode_is_float(mode)) {
+ if (mode_is_float(mode)) {
tv = new_tarval_from_double(cnst->v.float_value, mode);
} else {
- if(mode_is_signed(mode)) {
+ if (mode_is_signed(mode)) {
len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
} else {
len = snprintf(buf, sizeof(buf), "%llu",
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) {
+ if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
set_Load_volatility(load, volatility_is_volatile);
}
if (value_mode == dest_mode || is_Bad(value))
return value;
- if(dest_mode == mode_b) {
+ 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);
case DECLARATION_KIND_UNKNOWN:
break;
case DECLARATION_KIND_LOCAL_VARIABLE:
- panic("local variable without entity has no address");
+ /* 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_FUNCTION: {
type_t *const type = skip_typeref(ref->base.type);
ir_mode *const mode = get_ir_mode(type);
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;
/**
* 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...
+ * 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) {
+ if (function->kind == EXPR_REFERENCE) {
const reference_expression_t *ref = &function->reference;
declaration_t *declaration = ref->declaration;
- if((declaration_kind_t)declaration->declaration_kind == DECLARATION_KIND_FUNCTION) {
+ if ((declaration_kind_t)declaration->declaration_kind == DECLARATION_KIND_FUNCTION) {
if (declaration->v.entity == rts_entities[rts_alloca]) {
/* handle alloca() call */
expression_t *argument = call->arguments->expression;
- ir_node *size = expression_to_firm(argument);
+ 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);
+ 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);
+ ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
return res;
}
assert(is_type_function(points_to));
function_type_t *function_type = &points_to->function;
- 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;
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.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)
+ if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
set_Store_volatility(store, volatility_is_volatile);
set_store(store_mem);
} else {
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;
}
ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
set_store(store_mem);
- if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
+ if (type->base.qualifiers & TYPE_QUALIFIER_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)
-{
- dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
- value = do_strict_conv(dbgi, value);
-
- if (expression->kind == EXPR_REFERENCE) {
- const reference_expression_t *ref = &expression->reference;
-
- declaration_t *declaration = ref->declaration;
- assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
- if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
- set_value(declaration->v.value_number, value);
- return;
- }
- }
-
- ir_node *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;
-
- declaration_t *declaration = select->compound_entry;
- if (declaration->type->kind == TYPE_BITFIELD) {
- bitfield_store_to_firm(select, addr, value);
- return;
- }
- }
-
- assign_value(dbgi, addr, type, value);
-}
-
static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
ir_node *addr)
{
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)) {
+ 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 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) {
+ 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);
+ return;
+ }
+ }
-static ir_node *create_incdec(const unary_expression_t *expression)
+ 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;
+
+ declaration_t *declaration = select->compound_entry;
+ if (declaration->type->kind == TYPE_BITFIELD) {
+ bitfield_store_to_firm(select, addr, value);
+ return;
+ }
+ }
+
+ assign_value(dbgi, addr, type, value);
+}
+
+static void set_value_for_expression(const expression_t *expression,
+ ir_node *value)
{
- dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
- const expression_t *value_expr = expression->value;
- type_t *value_type = skip_typeref(value_expr->base.type);
- ir_mode *value_mode = get_ir_mode(value_type);
- ir_node *value_addr;
- ir_node *value;
- int value_number;
+ set_value_for_expression_addr(expression, value, NULL);
+}
- if (value_expr->kind == EXPR_REFERENCE) {
- const reference_expression_t *ref = &value_expr->reference;
+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;
declaration_t *declaration = ref->declaration;
assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
- value_number = declaration->v.value_number;
- value = get_value(value_number, value_mode);
- value_addr = NULL;
- } else {
- goto need_addr;
+ assert(addr == NULL);
+ ir_mode *mode = get_ir_mode(expression->base.type);
+ return get_value(declaration->v.value_number, 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->type->kind == TYPE_BITFIELD){
+ value = bitfield_extract_to_firm(&expression->select, addr);
} else {
-need_addr:
- value_addr = expression_to_addr(value_expr);
- if (value_expr->kind == EXPR_SELECT &&
- value_expr->select.compound_entry->type->kind == TYPE_BITFIELD){
- value = bitfield_extract_to_firm(&value_expr->select, value_addr);
- } else {
- value = deref_address(dbgi, value_type, value_addr);
- }
+ value = deref_address(dbgi, expression->base.type, addr);
}
+ return value;
+}
+
+
+static ir_node *create_incdec(const unary_expression_t *expression)
+{
+ 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);
+
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;
offset = get_type_size(pointer_type->points_to);
} else {
panic("no incdec expr in create_incdec");
}
- if (value_addr == NULL) {
- set_value(value_number, store_value);
- } else {
- if (value_expr->kind == EXPR_SELECT &&
- value_expr->select.compound_entry->type->kind == TYPE_BITFIELD){
- bitfield_store_to_firm(&value_expr->select, value_addr, store_value);
- } else {
- assign_value(dbgi, value_addr, value_type, store_value);
- }
- }
+ set_value_for_expression_addr(value_expr, store_value, addr);
return result;
}
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 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);
}
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;
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);
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_const(points_to);
+ type_t *const points_to = skip_typeref(pointer_type->points_to);
+ unsigned elem_size = get_type_size_const(points_to);
+
+ /* 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;
+ }
assert(elem_size >= 1);
if (elem_size == 1)
ir_node *pin = new_Pin(new_NoMem());
ir_node *op;
ir_node *res;
- if(mode_is_float(mode)) {
+ 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 {
type_t *type = expression->base.type;
ir_mode *mode = get_ir_mode(type);
- if(is_constant_expression(expression->left)) {
+ 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)) {
+ 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 {
- assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0)
- || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0));
return new_Const(mode, get_mode_one(mode));
}
}
static ir_node *create_assign_binop(const binary_expression_t *expression)
{
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);
- type_t *left_type = skip_typeref(left_expr->base.type);
- ir_node *left_addr;
- int value_number;
- ir_node *left;
-
- if (left_expr->kind == EXPR_REFERENCE) {
- const reference_expression_t *ref = &left_expr->reference;
-
- declaration_t *declaration = ref->declaration;
- assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
- if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
- value_number = declaration->v.value_number;
- left = get_value(value_number, left_mode);
- left_addr = NULL;
- } else {
- goto need_addr;
- }
- } else {
-need_addr:
- left_addr = expression_to_addr(left_expr);
- if (left_expr->kind == EXPR_SELECT &&
- left_expr->select.compound_entry->type->kind == TYPE_BITFIELD) {
- left = bitfield_extract_to_firm(&left_expr->select, left_addr);
- } else {
- left = deref_address(dbgi, left_type, left_addr);
- }
- }
-
- ir_node *right = expression_to_firm(expression->right);
-
- ir_node *result = create_op(dbgi, expression, left, right);
+ 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);
result = create_conv(dbgi, result, left_mode);
result = do_strict_conv(dbgi, result);
- if (left_addr == NULL) {
- set_value(value_number, result);
- } else {
- if (left_expr->kind == EXPR_SELECT &&
- left_expr->select.compound_entry->type->kind == TYPE_BITFIELD) {
- bitfield_store_to_firm(&left_expr->select, left_addr, result);
- } else {
- assign_value(dbgi, left_addr, left_type, result);
- }
- }
+ set_value_for_expression_addr(left_expr, result, left_addr);
return result;
}
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;
}
/* be sure the type is constructed */
(void) get_ir_type(type);
- if(designator->symbol != NULL) {
+ if (designator->symbol != NULL) {
assert(is_type_compound(type));
symbol_t *symbol = designator->symbol;
declaration_t *declaration = type->compound.declaration;
declaration_t *iter = declaration->scope.declarations;
for( ; iter != NULL; iter = iter->next) {
- if(iter->symbol == symbol) {
+ if (iter->symbol == symbol) {
break;
}
}
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);
}
type = skip_typeref(type);
/* § 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */
- if(is_type_array(type) && type->array.is_vla
+ if (is_type_array(type) && type->array.is_vla
&& expression->tp_expression != NULL) {
expression_to_firm(expression->tp_expression);
}
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;
return new_SymConst(mode, sym, symconst_type_align);
}
-static bool constant_folding;
-
static void init_ir_types(void);
+
long fold_constant(const expression_t *expression)
{
bool constant_folding_old = constant_folding;
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");
}
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)
static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
{
- type_t *const type = expr->base.type;
- ir_node *const ap = expression_to_firm(expr->ap);
- dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
- ir_node *const res = deref_address(dbgi, type, ap);
+ type_t *const type = expr->base.type;
+ expression_t *const ap_expr = expr->ap;
+ ir_node *const ap_addr = expression_to_addr(ap_expr);
+ ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
+ dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
+ ir_node *const res = deref_address(dbgi, type, ap);
- ir_node *const cnst = get_type_size(expr->base.type);
- 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;
}
case EXPR_BINARY_BUILTIN_EXPECT:
return produces_mode_b(expression->binary.left);
+ case EXPR_BINARY_COMMA:
+ return produces_mode_b(expression->binary.right);
default:
return false;
return produce_condition_result(expression, dbgi);
}
-static ir_node *expression_to_modeb(const expression_t *expression)
-{
- ir_node *res = _expression_to_firm(expression);
- res = create_conv(NULL, res, mode_b);
-
- return res;
-}
-
/**
* 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(NULL, 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;
}
declaration_kind_t declaration_kind,
ir_type *parent_type)
{
- ident *const id = new_id_from_str(declaration->symbol->string);
type_t *const type = skip_typeref(declaration->type);
+ if (is_type_function(type)) {
+ (void) get_function_entity(declaration);
+ return;
+ }
+
+ ident *const id = new_id_from_str(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(parent_type, id, irtype, dbgi);
declaration->v.entity = entity;
set_entity_variability(entity, variability_uninitialized);
set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
- if(parent_type == get_tls_type())
+ if (parent_type == get_tls_type())
set_entity_allocation(entity, allocation_automatic);
- else if(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
+ else if (declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
set_entity_allocation(entity, allocation_static);
- if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
+ if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
set_entity_volatility(entity, volatility_is_volatile);
}
}
const type_path_entry_t *entry = & path->path[i];
type_t *type = skip_typeref(entry->type);
- if(is_type_compound(type)) {
+ if (is_type_compound(type)) {
fprintf(stderr, ".%s", entry->compound_entry->symbol->string);
- } else if(is_type_array(type)) {
+ } else if (is_type_array(type)) {
fprintf(stderr, "[%zd]", entry->index);
} else {
fprintf(stderr, "-INVALID-");
assert(is_type_compound(top_type) || is_type_array(top_type));
- if(ARR_LEN(path->path) == 0) {
+ if (ARR_LEN(path->path) == 0) {
return NULL;
} else {
type_path_entry_t *top = get_type_path_top(path);
size_t len;
- if(is_type_compound(top_type)) {
+ if (is_type_compound(top_type)) {
declaration_t *declaration = top_type->compound.declaration;
declaration_t *entry = declaration->scope.declarations;
top->compound_entry = entry;
top->index = 0;
len = get_compound_size(&top_type->compound);
- if(entry != NULL)
+ if (entry != NULL)
path->top_type = entry->type;
} else {
assert(is_type_array(top_type));
path->top_type = top_type->array.element_type;
len = top_type->array.size;
}
- if(initializer == NULL
+ if (initializer == NULL
|| get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
initializer = create_initializer_compound(len);
/* we have to set the entry at the 2nd latest path entry... */
size_t path_len = ARR_LEN(path->path);
assert(path_len >= 1);
- if(path_len > 1) {
+ if (path_len > 1) {
type_path_entry_t *entry = & path->path[path_len-2];
ir_initializer_t *tinitializer = entry->initializer;
set_initializer_compound_value(tinitializer, entry->index,
type_t *orig_type = top->type;
type_t *type = skip_typeref(orig_type);
- if(designator->symbol != NULL) {
+ if (designator->symbol != NULL) {
assert(is_type_compound(type));
size_t index = 0;
symbol_t *symbol = designator->symbol;
declaration_t *declaration = type->compound.declaration;
declaration_t *iter = declaration->scope.declarations;
for( ; iter != NULL; iter = iter->next, ++index) {
- if(iter->symbol == symbol) {
+ if (iter->symbol == symbol) {
break;
}
}
long index = fold_constant(array_index);
assert(index >= 0);
#ifndef NDEBUG
- if(type->array.size_constant == 1) {
+ if (type->array.size_constant == 1) {
long array_size = type->array.size;
assert(index < array_size);
}
}
path->top_type = orig_type;
- if(designator->next != NULL) {
+ if (designator->next != NULL) {
descend_into_subtype(path);
}
}
static void advance_current_object(type_path_t *path)
{
- if(path->invalid) {
+ if (path->invalid) {
/* TODO: handle this... */
panic("invalid initializer in ast2firm (excessive elements)");
return;
type_path_entry_t *top = get_type_path_top(path);
type_t *type = skip_typeref(top->type);
- if(is_type_union(type)) {
+ if (is_type_union(type)) {
top->compound_entry = NULL;
- } else if(is_type_struct(type)) {
+ } else if (is_type_struct(type)) {
declaration_t *entry = top->compound_entry;
top->index++;
entry = entry->next;
top->compound_entry = entry;
- if(entry != NULL) {
+ if (entry != NULL) {
path->top_type = entry->type;
return;
}
assert(is_type_array(type));
top->index++;
- if(!type->array.size_constant || top->index < type->array.size) {
+ if (!type->array.size_constant || top->index < type->array.size) {
return;
}
}
* can ascend in the type hierarchy and continue with another subobject */
size_t len = ARR_LEN(path->path);
- if(len > 1) {
+ if (len > 1) {
ascend_from_subtype(path);
advance_current_object(path);
} else {
for(size_t i = 0; i < initializer->len; ++i) {
const initializer_t *sub_initializer = initializer->initializers[i];
- if(sub_initializer->kind == INITIALIZER_DESIGNATOR) {
+ if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
walk_designator(&path, sub_initializer->designator.designator);
continue;
}
- if(sub_initializer->kind == INITIALIZER_VALUE) {
+ if (sub_initializer->kind == INITIALIZER_VALUE) {
/* we might have to descend into types until we're at a scalar
* type */
while(true) {
type_t *orig_top_type = path.top_type;
type_t *top_type = skip_typeref(orig_top_type);
- if(is_type_scalar(top_type))
+ if (is_type_scalar(top_type))
break;
descend_into_subtype(&path);
}
type = skip_typeref(type);
size_t string_len = initializer->string.size;
- assert(type->kind == TYPE_ARRAY && type->array.size_constant);
+ assert(type->kind == TYPE_ARRAY);
+ assert(type->array.size_constant);
size_t len = type->array.size;
ir_initializer_t *irinitializer = create_initializer_compound(len);
const char *string = initializer->string.begin;
- ir_mode *mode = get_type_mode(ir_type_const_char);
+ ir_mode *mode = get_ir_mode(type->array.element_type);
for(size_t i = 0; i < len; ++i) {
char c = 0;
- if(i < string_len)
+ if (i < string_len)
c = string[i];
tarval *tv = new_tarval_from_long(c, mode);
const initializer_wide_string_t *initializer, type_t *type)
{
size_t string_len = initializer->string.size;
- assert(type->kind == TYPE_ARRAY && type->array.size_constant);
+ assert(type->kind == TYPE_ARRAY);
+ assert(type->array.size_constant);
size_t len = type->array.size;
ir_initializer_t *irinitializer = create_initializer_compound(len);
for(size_t i = 0; i < len; ++i) {
wchar_rep_t c = 0;
- if(i < string_len) {
+ if (i < string_len) {
c = string[i];
}
tarval *tv = new_tarval_from_long(c, mode);
assert(is_compound_type(type));
int n_members;
- if(is_Array_type(type)) {
+ if (is_Array_type(type)) {
assert(has_array_upper_bound(type, 0));
n_members = get_array_upper_bound_int(type, 0);
} else {
for(int i = 0; i < n_members; ++i) {
ir_node *addr;
ir_type *irtype;
- if(is_Array_type(type)) {
+ 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);
case IR_INITIALIZER_COMPOUND: {
assert(is_compound_type(type));
int n_members;
- if(is_Array_type(type)) {
+ if (is_Array_type(type)) {
assert(has_array_upper_bound(type, 0));
n_members = get_array_upper_bound_int(type, 0);
} else {
n_members = get_compound_n_members(type);
}
- if(get_initializer_compound_n_entries(initializer)
+ if (get_initializer_compound_n_entries(initializer)
!= (unsigned) n_members)
panic("initializer doesn't match compound type");
for(int i = 0; i < n_members; ++i) {
ir_node *addr;
ir_type *irtype;
- if(is_Array_type(type)) {
+ 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 *frame = get_irg_frame(current_ir_graph);
ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
- if(initializer->kind == INITIALIZER_VALUE) {
+ if (initializer->kind == INITIALIZER_VALUE) {
initializer_value_t *initializer_value = &initializer->value;
ir_node *value = expression_to_firm(initializer_value->value);
return;
}
- if(!is_constant_initializer(initializer)) {
+ if (!is_constant_initializer(initializer)) {
ir_initializer_t *irinitializer
= create_ir_initializer(initializer, type);
static void create_declaration_initializer(declaration_t *declaration)
{
initializer_t *initializer = declaration->init.initializer;
- if(initializer == NULL)
+ if (initializer == NULL)
return;
declaration_kind_t declaration_kind
= (declaration_kind_t) declaration->declaration_kind;
- if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
+ if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
create_initializer_local_variable_entity(declaration);
return;
}
- if(initializer->kind == INITIALIZER_VALUE) {
+ type_t *type = skip_typeref(declaration->type);
+
+ if (initializer->kind == INITIALIZER_VALUE) {
initializer_value_t *initializer_value = &initializer->value;
dbg_info *dbgi
= get_dbg_info(&declaration->source_position);
ir_node *value = expression_to_firm(initializer_value->value);
value = do_strict_conv(dbgi, value);
- if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
+ if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
set_value(declaration->v.value_number, value);
} else {
assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
ir_entity *entity = declaration->v.entity;
- set_entity_variability(entity, variability_initialized);
+ if (type->base.qualifiers & TYPE_QUALIFIER_CONST) {
+ set_entity_variability(entity, variability_constant);
+ } else {
+ set_entity_variability(entity, variability_initialized);
+ }
set_atomic_ent_value(entity, value);
}
} else {
ir_entity *entity = declaration->v.entity;
ir_initializer_t *irinitializer
- = create_ir_initializer(initializer, declaration->type);
+ = create_ir_initializer(initializer, type);
- set_entity_variability(entity, variability_initialized);
+ if (type->base.qualifiers & TYPE_QUALIFIER_CONST) {
+ set_entity_variability(entity, variability_constant);
+ } else {
+ set_entity_variability(entity, variability_initialized);
+ }
set_entity_initializer(entity, irinitializer);
}
}
static void create_variable_length_array(declaration_t *declaration)
{
+ /* initializers are not allowed for VLAs */
+ assert(declaration->init.initializer == NULL);
+
+ declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
+ declaration->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(declaration_t *declaration)
+{
+ /* initializers are not allowed for VLAs */
+ assert(declaration->init.initializer == NULL);
+ assert(get_cur_block() != NULL);
+
dbg_info *dbgi = get_dbg_info(&declaration->source_position);
type_t *type = declaration->type;
- ir_node *mem = get_store();
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);
- /* initializers are not allowed for VLAs */
- assert(declaration->init.initializer == NULL);
-
- declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
+ assert(declaration->declaration_kind
+ == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
declaration->v.vla_base = addr;
-
- /* TODO: record VLA somewhere so we create the free node when we leave
- * it's scope */
}
/**
type_t *type = skip_typeref(declaration->type);
/* is it a variable length array? */
- if(is_type_array(type) && !type->array.size_constant) {
+ if (is_type_array(type) && !type->array.size_constant) {
create_variable_length_array(declaration);
return;
- } else if(is_type_array(type) || is_type_compound(type)) {
+ } else if (is_type_array(type) || is_type_compound(type)) {
needs_entity = true;
- } else if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
+ } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
needs_entity = true;
}
- if(needs_entity) {
+ if (needs_entity) {
ir_type *frame_type = get_irg_frame_type(current_ir_graph);
create_declaration_entity(declaration,
DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
- if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
+ if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
set_entity_volatility(entity, volatility_is_volatile);
}
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_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);
ir_node *result = NULL;
statement_t *statement = compound->statements;
for( ; statement != NULL; statement = statement->base.next) {
- if(statement->base.next == NULL
+ if (statement->base.next == NULL
&& statement->kind == STATEMENT_EXPRESSION) {
result = expression_statement_to_firm(
&statement->expression);
create_declaration_entity(declaration,
DECLARATION_KIND_GLOBAL_VARIABLE,
var_type);
- set_entity_visibility(declaration->v.entity, vis);
+ if (!is_type_function(skip_typeref(declaration->type))) {
+ set_entity_visibility(declaration->v.entity, vis);
+ }
return;
case STORAGE_CLASS_NONE:
case STORAGE_CLASS_AUTO:
case STORAGE_CLASS_REGISTER:
- if(is_type_function(type)) {
- if(declaration->init.statement != NULL) {
+ if (is_type_function(type)) {
+ if (declaration->init.statement != NULL) {
panic("nested functions not supported yet");
} else {
get_function_entity(declaration);
static void initialize_local_declaration(declaration_t *declaration)
{
- if(declaration->symbol == NULL || declaration->namespc != NAMESPACE_NORMAL)
+ if (declaration->symbol == NULL || declaration->namespc != NAMESPACE_NORMAL)
return;
switch ((declaration_kind_t) declaration->declaration_kind) {
create_declaration_initializer(declaration);
return;
+ case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
+ allocate_variable_length_array(declaration);
+ return;
+
case DECLARATION_KIND_LABEL_BLOCK:
case DECLARATION_KIND_COMPOUND_MEMBER:
case DECLARATION_KIND_GLOBAL_VARIABLE:
- case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
case DECLARATION_KIND_FUNCTION:
declaration_t *declaration = statement->declarations_begin;
declaration_t *end = statement->declarations_end->next;
for( ; declaration != end; declaration = declaration->next) {
- if(declaration->namespc != NAMESPACE_NORMAL)
+ if (declaration->namespc != NAMESPACE_NORMAL)
continue;
initialize_local_declaration(declaration);
}
}
mature_immBlock(true_block);
- if (false_block != fallthrough_block) {
+ if (false_block != fallthrough_block && false_block != NULL) {
mature_immBlock(false_block);
}
if (fallthrough_block != NULL) {
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);
+ set_cur_block(body_block);
+ keep_alive(get_store());
+ } 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);
}
}
if (get_cur_block() != NULL) {
- if(statement->initialisation != NULL) {
+ if (statement->initialisation != NULL) {
expression_to_firm(statement->initialisation);
}
false_block);
} else {
keep_alive(header_block);
+ keep_alive(get_store());
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);
return break_label;
}
-static void switch_statement_to_firm(const switch_statement_t *statement)
+static void switch_statement_to_firm(switch_statement_t *statement)
{
dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
saw_default_label = false;
current_switch_cond = cond;
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;
+ if (l->last_case > def_nr)
+ def_nr = l->last_case;
+ }
+
+ if (def_nr + 1 < 0) {
+ /* Bad: an overflow occurred, 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);
+ unsigned long i;
+
+ 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;
+ }
+ for (long cns = l->first_case; cns <= l->last_case; ++cns) {
+ if (cns >= 0 && (unsigned long)cns < num_cases)
+ 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...
+ */
+ for (i = 0; i < num_cases; ++i)
+ if ((bits[i >> 3] & (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 (!saw_default_label) {
set_cur_block(get_nodes_block(cond));
ir_node *const proj = new_d_defaultProj(dbgi, cond,
- MAGIC_DEFAULT_PN_NUMBER);
+ statement->default_proj_nr);
add_immBlock_pred(get_break_label(), proj);
}
set_cur_block(break_label);
assert(current_switch_cond == cond);
+ current_switch = old_switch;
current_switch_cond = old_switch_cond;
break_label = old_break_label;
saw_default_label = old_saw_default_label;
static void case_label_to_firm(const case_label_statement_t *statement)
{
+ if (statement->is_empty)
+ 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;
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 start_pn = fold_constant(statement->expression);
- long end_pn = start_pn;
- if (statement->end_range != NULL) {
- end_pn = fold_constant(statement->end_range);
- }
- assert(start_pn <= end_pn);
+ 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 */
- for (long pn = start_pn; pn <= end_pn; ++pn) {
- if(pn == MAGIC_DEFAULT_PN_NUMBER) {
- /* oops someone detected our cheating... */
- panic("magic default pn used");
- }
+ 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);
}
mature_immBlock(block);
set_cur_block(block);
- if(statement->statement != NULL) {
+ if (statement->statement != NULL) {
statement_to_firm(statement->statement);
}
}
{
assert(label->namespc == NAMESPACE_LABEL);
- if(label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
+ if (label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
return label->v.block;
}
assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
label->v.block = block;
- ARR_APP1(ir_node *, imature_blocks, block);
+ ARR_APP1(ir_node *, immature_blocks, block);
return block;
}
{
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(get_store());
keep_alive(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);
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;
-
static void asm_statement_to_firm(const asm_statement_t *statement)
{
- (void) statement;
- fprintf(stderr, "WARNING asm not implemented yet!\n");
-#if 0
bool needs_memory = false;
+ if (statement->is_volatile) {
+ needs_memory = true;
+ }
+
size_t n_clobbers = 0;
asm_clobber_t *clobber = statement->clobbers;
for( ; clobber != NULL; clobber = clobber->next) {
- if(strcmp(clobber->clobber, "memory") == 0) {
+ 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), "%d", 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);
}
-#endif
}
static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
{
int count = 0;
for (; decl != end; decl = decl->next) {
- if(decl->namespc != NAMESPACE_NORMAL)
+ if (decl->namespc != NAMESPACE_NORMAL)
continue;
- const type_t *type = skip_typeref(decl->type);
+ type_t *type = skip_typeref(decl->type);
+
if (!decl->address_taken && is_type_scalar(type))
++count;
const initializer_t *initializer = decl->init.initializer;
/* FIXME: should walk initializer hierarchies... */
- if(initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
+ if (initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
count += count_decls_in_expression(initializer->value.value);
}
}
static int count_decls_in_expression(const expression_t *expression) {
int count = 0;
- if(expression == NULL)
+ if (expression == NULL)
return 0;
switch((expression_kind_t) expression->base.kind) {
case STATEMENT_LABEL: {
const label_statement_t *const label_stmt = &stmt->label;
- if(label_stmt->statement != NULL) {
+ if (label_stmt->statement != NULL) {
count += count_decls_in_stmts(label_stmt->statement);
}
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) {
+ if (label->statement != NULL) {
count += count_decls_in_stmts(label->statement);
}
break;
case STATEMENT_MS_TRY: {
const ms_try_statement_t *const try_stmt = &stmt->ms_try;
count += count_decls_in_stmts(try_stmt->try_statement);
- if(try_stmt->except_expression != NULL)
+ if (try_stmt->except_expression != NULL)
count += count_decls_in_expression(try_stmt->except_expression);
count += count_decls_in_stmts(try_stmt->final_statement);
break;
bool needs_entity = parameter->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);
set_entity_ident(entity, id);
long pn = n;
ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn);
- ir_mode *mode = get_ir_mode(parameter->type);
+ ir_mode *mode = get_ir_mode(type);
value = create_conv(NULL, value, mode);
value = do_strict_conv(NULL, value);
}
}
+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);
+}
+
/**
* Create code for a function.
*/
{
ir_entity *function_entity = get_function_entity(declaration);
- if(declaration->init.statement == NULL)
+ if (declaration->init.statement == NULL)
return;
+ if (declaration->modifiers & DM_CONSTRUCTOR) {
+ ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
+ add_function_pointer(segment, function_entity, "constructor_ptr.%u");
+ }
+ if (declaration->modifiers & DM_DESTRUCTOR) {
+ ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
+ add_function_pointer(segment, function_entity, "destructor_ptr.%u");
+ }
+
current_function_decl = declaration;
current_function_name = NULL;
current_funcsig = NULL;
- assert(imature_blocks == NULL);
- imature_blocks = NEW_ARR_F(ir_node*, 0);
+ assert(immature_blocks == NULL);
+ immature_blocks = NEW_ARR_F(ir_node*, 0);
int n_local_vars = get_function_n_local_vars(declaration);
ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
/* set inline flags */
if (declaration->is_inline)
set_irg_inline_property(irg, irg_inline_recomended);
- handle_decl_modifier_irg(irg, declaration->decl_modifiers);
+ handle_decl_modifier_irg(irg, declaration->modifiers);
next_value_number_function = 0;
initialize_function_parameters(declaration);
ir_node *end_block = get_irg_end_block(irg);
/* do we have a return statement yet? */
- if(get_cur_block() != NULL) {
+ if (get_cur_block() != NULL) {
type_t *type = skip_typeref(declaration->type);
assert(is_type_function(type));
const function_type_t *func_type = &type->function;
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;
in[0] = new_Const(mode, get_mode_null(mode));
} else {
in[0] = new_Unknown(mode);
- if(warning.return_type) {
- warningf(&declaration->source_position,
- "missing return statement at end of non-void function '%Y'",
- declaration->symbol);
- }
}
ret = new_Return(get_store(), 1, in);
}
add_immBlock_pred(end_block, ret);
}
- for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
- mature_immBlock(imature_blocks[i]);
+ for(int i = 0; i < ARR_LEN(immature_blocks); ++i) {
+ mature_immBlock(immature_blocks[i]);
}
- DEL_ARR_F(imature_blocks);
- imature_blocks = NULL;
+ DEL_ARR_F(immature_blocks);
+ immature_blocks = NULL;
mature_immBlock(first_block);
mature_immBlock(end_block);
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;
}
}
/* first pass: create declarations */
declaration_t *declaration = scope->declarations;
for( ; declaration != NULL; declaration = declaration->next) {
- if(declaration->namespc != NAMESPACE_NORMAL)
+ if (declaration->namespc != NAMESPACE_NORMAL)
continue;
- if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
+ if (declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
|| declaration->storage_class == STORAGE_CLASS_TYPEDEF)
continue;
- if(declaration->symbol == NULL)
+ if (declaration->symbol == NULL)
continue;
type_t *type = skip_typeref(declaration->type);
- if(is_type_function(type)) {
+ if (is_type_function(type)) {
get_function_entity(declaration);
} else {
create_global_variable(declaration);
/* second pass: create code/initializers */
declaration = scope->declarations;
for( ; declaration != NULL; declaration = declaration->next) {
- if(declaration->namespc != NAMESPACE_NORMAL)
+ if (declaration->namespc != NAMESPACE_NORMAL)
continue;
- if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
+ if (declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
|| declaration->storage_class == STORAGE_CLASS_TYPEDEF)
continue;
- if(declaration->symbol == NULL)
+ if (declaration->symbol == NULL)
continue;
type_t *type = declaration->type;
- if(type->kind == TYPE_FUNCTION) {
+ if (type->kind == TYPE_FUNCTION) {
create_function(declaration);
} else {
assert(declaration->declaration_kind
}
}
+static void set_be_option(const char *option)
+{
+ int res = firm_be_option(option);
+ assert(res);
+}
+
void init_ast2firm(void)
{
obstack_init(&asm_obst);
id_imp = new_id_from_chars("__imp_", 6);
/* OS option must be set to the backend */
- const char *s = "ia32-gasmode=linux";
switch (firm_opt.os_support) {
case OS_SUPPORT_MINGW:
create_ld_ident = create_ld_ident_win32;
- s = "ia32-gasmode=mingw";
+ set_be_option("ia32-gasmode=mingw");
break;
case OS_SUPPORT_LINUX:
create_ld_ident = create_ld_ident_linux_elf;
- s = "ia32-gasmode=linux"; break;
+ set_be_option("ia32-gasmode=elf");
break;
case OS_SUPPORT_MACHO:
create_ld_ident = create_ld_ident_macho;
- s = "ia32-gasmode=macho"; break;
+ set_be_option("ia32-gasmode=macho");
+ set_be_option("ia32-stackalign=4");
+ set_be_option("pic");
break;
}
- firm_be_option(s);
/* create idents for all known runtime functions */
for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
rts_idents[i] = new_id_from_str(rts_data[i].name);
}
+
+ entitymap_init(&entitymap);
}
static void init_ir_types(void)
{
static int ir_types_initialized = 0;
- if(ir_types_initialized)
+ if (ir_types_initialized)
return;
ir_types_initialized = 1;
- type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
- type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
- type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
-
ir_type_int = get_ir_type(type_int);
ir_type_const_char = get_ir_type(type_const_char);
ir_type_wchar_t = get_ir_type(type_wchar_t);
void exit_ast2firm(void)
{
+ entitymap_destroy(&entitymap);
obstack_free(&asm_obst, NULL);
}
+static void global_asm_to_firm(statement_t *s)
+{
+ for (; s != NULL; s = s->base.next) {
+ assert(s->kind == STATEMENT_ASM);
+
+ char const *const text = s->asms.asm_text.begin;
+ size_t size = s->asms.asm_text.size;
+
+ /* skip the last \0 */
+ if (text[size - 1] == '\0')
+ --size;
+
+ ident *const id = new_id_from_chars(text, size);
+ add_irp_asm(id);
+ }
+}
+
void translation_unit_to_firm(translation_unit_t *unit)
{
/* just to be sure */
init_ir_types();
scope_to_firm(&unit->scope);
+ global_asm_to_firm(unit->global_asm);
+
+ current_ir_graph = NULL;
}
projects / cparser / blobdiff