#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 bool constant_folding;
+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 declaration_t **all_labels;
+static ir_node *ijmp_list;
+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 ir_graph *current_function;
static entitymap_t entitymap;
{
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);
}
static unsigned get_type_size_const(type_t *type)
{
- type = skip_typeref(type);
-
switch(type->kind) {
case TYPE_ERROR:
panic("error type occurred");
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;
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);
+ 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;
}
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;
}
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);
+ unsigned size = type->bit_size;
assert(!is_type_float(base));
if (is_type_signed(base)) {
size_t base;
size_t bits_remainder;
if (entry_type->kind == TYPE_BITFIELD) {
- size_t size_bits = fold_constant(entry_type->bitfield.size);
+ size_t size_bits = entry_type->bitfield.bit_size;
size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
if (size_bits > rest_size_bits) {
ir_type *firm_type = NULL;
switch (type->kind) {
case TYPE_ERROR:
- panic("error type occurred");
+ /* 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;
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.
*
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));
- if (declaration->storage_class == STORAGE_CLASS_STATIC &&
- declaration->init.statement == NULL) {
- /* this entity was declared, but never defined */
- set_entity_peculiarity(entity, peculiarity_description);
- }
- if (declaration->storage_class == STORAGE_CLASS_STATIC
- || declaration->is_inline) {
+
+ 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);
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_to_firm(const reference_expression_t *ref)
{
dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
/* make sure the type is constructed */
(void) get_ir_type(type);
- switch((declaration_kind_t) declaration->declaration_kind) {
+ switch ((declaration_kind_t)declaration->declaration_kind) {
case DECLARATION_KIND_TYPE:
case DECLARATION_KIND_UNKNOWN:
break;
/**
* 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)
{
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));
+ 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;
}
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)
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) {
return all_one;
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)
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));
}
}
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 *right = expression_to_firm(expression->right);
ir_node *result = create_op(dbgi, expression, left, right);
result = create_conv(dbgi, result, left_mode);
}
static void init_ir_types(void);
+
long fold_constant(const expression_t *expression)
{
bool constant_folding_old = constant_folding;
if (is_constant_expression(expression->condition)) {
long val = fold_constant(expression->condition);
if (val) {
- return expression_to_firm(expression->true_expression);
+ 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 NULL;
}
+static ir_node *get_label_block(declaration_t *label)
+{
+ assert(label->namespc == NAMESPACE_LABEL || label->namespc == NAMESPACE_LOCAL_LABEL);
+
+ if (label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
+ return label->v.block;
+ }
+ assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
+
+ /* 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->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
+ label->v.block = block;
+
+ ARR_APP1(declaration_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->declaration);
+ 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
}
#endif
- switch(expression->kind) {
+ switch (expression->kind) {
case EXPR_CHARACTER_CONSTANT:
return character_constant_to_firm(&expression->conste);
case EXPR_WIDE_CHARACTER_CONSTANT:
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:
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_cur_block(NULL);
+ return cond_expr;
}
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;
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);
return;
}
+ type_t *type = skip_typeref(declaration->type);
+
if (initializer->kind == INITIALIZER_VALUE) {
initializer_value_t *initializer_value = &initializer->value;
dbg_info *dbgi
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);
}
}
}
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) {
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();
for( ; declaration != NULL; declaration = declaration->next) {
create_local_declaration(declaration);
}
- declaration = statement->scope.declarations;
- for( ; declaration != NULL; declaration = declaration->next) {
- initialize_local_declaration(declaration);
- }
if (get_cur_block() != NULL) {
+ declaration = statement->scope.declarations;
+ for( ; declaration != NULL; declaration = declaration->next) {
+ initialize_local_declaration(declaration);
+ }
+
if (statement->initialisation != NULL) {
expression_to_firm(statement->initialisation);
}
false_block);
} else {
keep_alive(header_block);
+ keep_all_memory(header_block);
jmp = new_Jmp();
add_immBlock_pred(body_block, jmp);
}
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_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;
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);
+ 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);
}
}
}
-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);
set_cur_block(block);
keep_alive(block);
+ keep_all_memory(block);
if (statement->statement != NULL) {
statement_to_firm(statement->statement);
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);
}
ir_node *ins[n_inputs + n_outputs + 1];
size_t in_size = 0;
- ir_asm_constraint *tmp_in_constraints
- = xmalloc(n_outputs * sizeof(tmp_in_constraints[0]));
+ ir_asm_constraint tmp_in_constraints[n_outputs];
const expression_t *out_exprs[n_outputs];
ir_node *out_addrs[n_outputs];
|| (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(constraints);
+ 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;
obstack_grow(&asm_obst, tmp_in_constraints,
in_size * sizeof(tmp_in_constraints[0]));
- free(tmp_in_constraints);
/* find and count input and output arguments */
argument = statement->inputs;
for( ; argument != NULL; argument = argument->next) {
}
/* 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];
set_value_for_expression_addr(out_expr, proj, addr);
}
- if (needs_memory) {
- ir_node *projm = new_Proj(node, mode_M, i);
- set_store(projm);
- }
}
static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
for (; decl != end; decl = decl->next) {
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;
case EXPR_BUILTIN_SYMBOL:
case EXPR_VA_START:
case EXPR_VA_ARG:
+ case EXPR_LABEL_ADDRESS:
break;
}
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);
+}
+
+/**
+ * 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.
*/
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(all_labels == NULL);
+ all_labels = NEW_ARR_F(declaration_t *, 0);
+ ijmp_list = NULL;
int n_local_vars = get_function_n_local_vars(declaration);
ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
+ 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));
/* 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);
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]);
+ bool has_computed_gotos = false;
+ for (int i = ARR_LEN(all_labels) - 1; i >= 0; --i) {
+ declaration_t *label = all_labels[i];
+ if (label->address_taken) {
+ gen_ijmp_branches(label->v.block);
+ has_computed_gotos = true;
+ }
+ mature_immBlock(label->v.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(&declaration->source_position,
+ "function '%Y' can never be inlined because it contains a computed goto",
+ declaration->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);
set_type_alignment_bytes(frame_type, align_all);
irg_vrfy(irg);
+ current_function = old_current_function;
}
static void scope_to_firm(scope_t *scope)
}
}
+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=elf";
+ set_be_option("ia32-gasmode=elf");
break;
case OS_SUPPORT_MACHO:
create_ld_ident = create_ld_ident_macho;
- s = "ia32-gasmode=macho";
+ set_be_option("ia32-gasmode=macho");
+ set_be_option("ia32-stackalign=4");
+ set_be_option("pic");
break;
}
- int res = firm_be_option(s);
- (void) res;
- assert(res);
/* create idents for all known runtime functions */
for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
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);
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