#include "driver/firm_opt.h"
#include "driver/firm_cmdline.h"
+typedef struct trampoline_region trampoline_region;
+struct trampoline_region {
+ ir_entity *function; /**< The function that is called by this trampoline */
+ ir_entity *region; /**< created region for the trampoline */
+};
+
+static const backend_params *be_params;
+
+static ir_type *ir_type_char;
static ir_type *ir_type_const_char;
static ir_type *ir_type_wchar_t;
static ir_type *ir_type_void;
static switch_statement_t *current_switch;
static ir_graph *current_function;
static translation_unit_t *current_translation_unit;
+static trampoline_region *current_trampolines;
+static ir_type *current_outer_frame;
+static ir_type *current_outer_value_type;
+static ir_node *current_static_link;
static entitymap_t entitymap;
static void enqueue_inner_function(entity_t *entity)
{
+ if (inner_functions == NULL)
+ inner_functions = NEW_ARR_F(entity_t *, 0);
ARR_APP1(entity_t*, inner_functions, entity);
}
-static entity_t *next_inner_function(void)
-{
- int len = ARR_LEN(inner_functions);
- if (len == 0)
- return NULL;
-
- entity_t *entity = inner_functions[len-1];
- ARR_SHRINKLEN(inner_functions, len-1);
-
- return entity;
-}
-
ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
{
const entity_t *entity = get_irg_loc_description(irg, pos);
/**
* Return a node representing the size of a type.
*/
-static ir_node *get_type_size(type_t *type)
+static ir_node *get_type_size_node(type_t *type)
{
type = skip_typeref(type);
if (is_type_array(type) && type->array.is_vla) {
ir_node *size_node = get_vla_size(&type->array);
- ir_node *elem_size = get_type_size(type->array.element_type);
+ ir_node *elem_size = get_type_size_node(type->array.element_type);
ir_mode *mode = get_irn_mode(size_node);
ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
return real_size;
return count;
}
-static type_t *get_aligned_type(type_t *type, int alignment)
-{
- if (alignment == 0)
- return type;
-
- type = skip_typeref(type);
- if (alignment > type->base.alignment) {
- type_t *copy = duplicate_type(type);
- copy->base.alignment = alignment;
- type = identify_new_type(copy);
- }
- return type;
-}
-
/**
* Creates a Firm type for an atomic type
*/
-static ir_type *create_atomic_type(atomic_type_kind_t akind, int alignment)
+static ir_type *create_atomic_type(atomic_type_kind_t akind)
{
- ir_mode *mode = atomic_modes[akind];
- ident *id = get_mode_ident(mode);
- ir_type *irtype = new_type_primitive(id, mode);
+ ir_mode *mode = atomic_modes[akind];
+ ident *id = get_mode_ident(mode);
+ ir_type *irtype = new_type_primitive(id, mode);
+ il_alignment_t alignment = get_atomic_type_alignment(akind);
set_type_alignment_bytes(irtype, alignment);
ir_mode *mode = atomic_modes[kind];
ident *id = get_mode_ident(mode);
ir_type *irtype = new_type_primitive(id, mode);
+ il_alignment_t alignment = get_type_alignment((const type_t*) type);
- set_type_alignment_bytes(irtype, type->base.alignment);
+ set_type_alignment_bytes(irtype, alignment);
return irtype;
}
* return type of a parameter (and take transparent union gnu extension into
* account)
*/
-static type_t *get_parameter_type(type_t *type)
+static type_t *get_parameter_type(type_t *orig_type)
{
- type = skip_typeref(type);
- if (type->base.modifiers & TYPE_MODIFIER_TRANSPARENT_UNION) {
+ type_t *type = skip_typeref(orig_type);
+ if (is_type_union(type)
+ && get_type_modifiers(orig_type) & DM_TRANSPARENT_UNION) {
compound_t *compound = type->compound.compound;
type = compound->members.entities->declaration.type;
}
return type;
}
-static ir_type *create_method_type(const function_type_t *function_type)
+static ir_type *create_method_type(const function_type_t *function_type, bool for_closure)
{
type_t *return_type = skip_typeref(function_type->return_type);
ident *id = id_unique("functiontype.%u");
- int n_parameters = count_parameters(function_type);
+ int n_parameters = count_parameters(function_type) + (for_closure ? 1 : 0);
int n_results = return_type == type_void ? 0 : 1;
ir_type *irtype = new_type_method(id, n_parameters, n_results);
function_parameter_t *parameter = function_type->parameters;
int n = 0;
+ if (for_closure) {
+ ir_type *p_irtype = get_ir_type(type_void_ptr);
+ set_method_param_type(irtype, n, p_irtype);
+ ++n;
+ }
for ( ; parameter != NULL; parameter = parameter->next) {
type_t *type = get_parameter_type(parameter->type);
ir_type *p_irtype = get_ir_type(type);
break;
}
+ if (for_closure)
+ set_method_calling_convention(irtype, get_method_calling_convention(irtype) | cc_this_call);
+
return irtype;
}
/**
* Construct firm type from ast struct type.
- *
- * As anonymous inner structs get flattened to a single firm type, we might get
- * irtype, outer_offset and out_align passed (they represent the position of
- * the anonymous inner struct inside the resulting firm struct)
*/
-static ir_type *create_compound_type(compound_type_t *type, ir_type *irtype,
- size_t *outer_offset, size_t *outer_align,
+static ir_type *create_compound_type(compound_type_t *type,
bool incomplete, bool is_union)
{
compound_t *compound = type->compound;
return compound->irtype;
}
- size_t align_all = 1;
- size_t offset = 0;
- size_t bit_offset = 0;
- size_t size = 0;
-
- if (irtype == NULL) {
- symbol_t *symbol = compound->base.symbol;
- ident *id;
- if (symbol != NULL) {
- id = new_id_from_str(symbol->string);
- } else {
- if (is_union) {
- id = id_unique("__anonymous_union.%u");
- } else {
- id = id_unique("__anonymous_struct.%u");
- }
- }
- dbg_info *dbgi = get_dbg_info(&compound->base.source_position);
-
+ symbol_t *symbol = compound->base.symbol;
+ ident *id;
+ if (symbol != NULL) {
+ id = new_id_from_str(symbol->string);
+ } else {
if (is_union) {
- irtype = new_d_type_union(id, dbgi);
+ id = id_unique("__anonymous_union.%u");
} else {
- irtype = new_d_type_struct(id, dbgi);
+ id = id_unique("__anonymous_struct.%u");
}
+ }
+ dbg_info *dbgi = get_dbg_info(&compound->base.source_position);
- compound->irtype_complete = false;
- compound->irtype = irtype;
+ ir_type *irtype;
+ if (is_union) {
+ irtype = new_d_type_union(id, dbgi);
} else {
- offset = *outer_offset;
- align_all = *outer_align;
+ irtype = new_d_type_struct(id, dbgi);
}
+ compound->irtype_complete = false;
+ compound->irtype = irtype;
+
if (incomplete)
return irtype;
if (entry->kind != ENTITY_COMPOUND_MEMBER)
continue;
- size_t prev_offset = offset;
-
symbol_t *symbol = entry->base.symbol;
- type_t *entry_type = skip_typeref(entry->declaration.type);
- entry_type
- = get_aligned_type(entry_type, entry->compound_member.alignment);
- dbg_info *dbgi = get_dbg_info(&entry->base.source_position);
-
+ type_t *entry_type = entry->declaration.type;
ident *ident;
- if (symbol != NULL) {
- ident = new_id_from_str(symbol->string);
- } else {
- if (entry_type->kind == TYPE_COMPOUND_STRUCT) {
- create_compound_type(&entry_type->compound, irtype, &offset,
- &align_all, false, COMPOUND_IS_STRUCT);
- goto finished_member;
- } else if (entry_type->kind == TYPE_COMPOUND_UNION) {
- create_compound_type(&entry_type->compound, irtype, &offset,
- &align_all, false, COMPOUND_IS_UNION);
- goto finished_member;
- } else {
- assert(entry_type->kind == TYPE_BITFIELD);
- }
+ if (symbol == NULL) {
+ /* anonymous bitfield member, skip */
+ if (entry_type->kind == TYPE_BITFIELD)
+ continue;
+ assert(entry_type->kind == TYPE_COMPOUND_STRUCT
+ || entry_type->kind == TYPE_COMPOUND_UNION);
ident = id_unique("anon.%u");
- }
-
- ir_type *base_irtype;
- if (entry_type->kind == TYPE_BITFIELD) {
- base_irtype = get_ir_type(entry_type->bitfield.base_type);
} else {
- base_irtype = get_ir_type(entry_type);
+ ident = new_id_from_str(symbol->string);
}
- size_t entry_alignment = get_type_alignment_bytes(base_irtype);
- size_t misalign = offset % entry_alignment;
+ dbg_info *dbgi = get_dbg_info(&entry->base.source_position);
ir_type *entry_irtype = get_ir_type(entry_type);
ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
- size_t base;
- size_t bits_remainder;
- if (entry_type->kind == TYPE_BITFIELD) {
- size_t size_bits = entry_type->bitfield.bit_size;
- size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
-
- if (size_bits > rest_size_bits) {
- /* start a new bucket */
- offset += entry_alignment - misalign;
- bit_offset = 0;
-
- base = offset;
- bits_remainder = 0;
- } else {
- /* put into current bucket */
- base = offset - misalign;
- bits_remainder = misalign * 8 + bit_offset;
- }
-
- offset += size_bits / 8;
- bit_offset = bit_offset + (size_bits % 8);
- } else {
- size_t entry_size = get_type_size_bytes(base_irtype);
- if (misalign > 0 || bit_offset > 0)
- offset += entry_alignment - misalign;
-
- base = offset;
- bits_remainder = 0;
- offset += entry_size;
- bit_offset = 0;
- }
-
- if (entry_alignment > align_all) {
- if (entry_alignment % align_all != 0) {
- panic("uneven alignments not supported yet");
- }
- align_all = entry_alignment;
- }
-
- set_entity_offset(entity, base);
+ set_entity_offset(entity, entry->compound_member.offset);
set_entity_offset_bits_remainder(entity,
- (unsigned char) bits_remainder);
- //add_struct_member(irtype, entity);
- entry->declaration.kind = DECLARATION_KIND_COMPOUND_MEMBER;
- assert(entry->compound_member.entity == NULL);
- entry->compound_member.entity = entity;
-
-finished_member:
- if (is_union) {
- size_t entry_size = offset - prev_offset;
- if (entry_size > size) {
- size = entry_size;
- }
- offset = 0;
- bit_offset = 0;
- }
- }
+ entry->compound_member.bit_offset);
- if (!is_union) {
- size = offset;
- }
-
- size_t misalign = offset % align_all;
- if (misalign > 0 || bit_offset > 0) {
- size += align_all - misalign;
+ assert(entry->declaration.kind == DECLARATION_KIND_UNKNOWN);
+ entry->declaration.kind = DECLARATION_KIND_COMPOUND_MEMBER;
+ entry->compound_member.entity = entity;
}
- if (outer_offset != NULL) {
- if (!is_union) {
- *outer_offset = offset;
- } else {
- *outer_offset += size;
- }
-
- if (align_all > *outer_align) {
- if (align_all % *outer_align != 0) {
- panic("uneven alignments not supported yet");
- }
- *outer_align = align_all;
- }
- } else {
- set_type_alignment_bytes(irtype, align_all);
- set_type_size_bytes(irtype, size);
- set_type_state(irtype, layout_fixed);
- }
+ set_type_alignment_bytes(irtype, compound->alignment);
+ set_type_size_bytes(irtype, compound->size);
+ set_type_state(irtype, layout_fixed);
return irtype;
}
constant_folding = constant_folding_old;
- return create_atomic_type(type->akind, type->base.alignment);
+ return create_atomic_type(type->akind);
}
static ir_type *get_ir_type_incomplete(type_t *type)
switch (type->kind) {
case TYPE_COMPOUND_STRUCT:
- return create_compound_type(&type->compound, NULL, NULL, NULL,
- true, COMPOUND_IS_STRUCT);
+ return create_compound_type(&type->compound, true, COMPOUND_IS_STRUCT);
case TYPE_COMPOUND_UNION:
- return create_compound_type(&type->compound, NULL, NULL, NULL,
- true, COMPOUND_IS_UNION);
+ return create_compound_type(&type->compound, true, COMPOUND_IS_UNION);
default:
return get_ir_type(type);
}
switch (type->kind) {
case TYPE_ERROR:
/* Happens while constant folding, when there was an error */
- return create_atomic_type(ATOMIC_TYPE_VOID, 0);
+ return create_atomic_type(ATOMIC_TYPE_VOID);
case TYPE_ATOMIC:
- firm_type = create_atomic_type(type->atomic.akind,
- type->base.alignment);
+ firm_type = create_atomic_type(type->atomic.akind);
break;
case TYPE_COMPLEX:
firm_type = create_complex_type(&type->complex);
firm_type = create_imaginary_type(&type->imaginary);
break;
case TYPE_FUNCTION:
- firm_type = create_method_type(&type->function);
+ firm_type = create_method_type(&type->function, false);
break;
case TYPE_POINTER:
firm_type = create_pointer_type(&type->pointer);
firm_type = create_array_type(&type->array);
break;
case TYPE_COMPOUND_STRUCT:
- firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
- false, COMPOUND_IS_STRUCT);
+ firm_type = create_compound_type(&type->compound, false, COMPOUND_IS_STRUCT);
break;
case TYPE_COMPOUND_UNION:
- firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
- false, COMPOUND_IS_UNION);
+ firm_type = create_compound_type(&type->compound, false, COMPOUND_IS_UNION);
break;
case TYPE_ENUM:
firm_type = create_enum_type(&type->enumt);
* @param ent the entity
* @param decl the routine declaration
*/
-static void handle_gnu_attributes_ent(ir_entity *irentity, entity_t *entity)
+static void handle_decl_modifiers(ir_entity *irentity, entity_t *entity)
{
assert(is_declaration(entity));
decl_modifiers_t modifiers = entity->declaration.modifiers;
* Creates an entity representing a function.
*
* @param declaration the function declaration
+ * @param owner_type the owner type of this function, NULL
+ * for global functions
*/
-static ir_entity *get_function_entity(entity_t *entity)
+static ir_entity *get_function_entity(entity_t *entity, ir_type *owner_type)
{
assert(entity->kind == ENTITY_FUNCTION);
if (entity->function.entity != NULL) {
symbol_t *symbol = entity->base.symbol;
ident *id = new_id_from_str(symbol->string);
- ir_type *global_type = get_glob_type();
- ir_type *ir_type_method = get_ir_type(entity->declaration.type);
- bool const has_body = entity->function.statement != NULL;
/* already an entity defined? */
ir_entity *irentity = entitymap_get(&entitymap, symbol);
+ bool const has_body = entity->function.statement != NULL;
if (irentity != NULL) {
if (get_entity_visibility(irentity) == visibility_external_allocated
&& has_body) {
goto entity_created;
}
+ ir_type *ir_type_method;
+ if (entity->function.need_closure)
+ ir_type_method = create_method_type(&entity->declaration.type->function, true);
+ else
+ ir_type_method = get_ir_type(entity->declaration.type);
+
+ bool nested_function = false;
+ if (owner_type == NULL)
+ owner_type = get_glob_type();
+ else
+ nested_function = true;
+
dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
- irentity = new_d_entity(global_type, id, ir_type_method, dbgi);
- set_entity_ld_ident(irentity, create_ld_ident(entity));
-
- handle_gnu_attributes_ent(irentity, entity);
-
- /* static inline => local
- * extern inline => local
- * inline without definition => local
- * inline with definition => external_visible */
- storage_class_tag_t const storage_class
- = (storage_class_tag_t) entity->declaration.storage_class;
- bool const is_inline = entity->function.is_inline;
- if (is_inline && storage_class == STORAGE_CLASS_NONE && has_body) {
- set_entity_visibility(irentity, visibility_external_visible);
- } else if (storage_class == STORAGE_CLASS_STATIC ||
- (is_inline && has_body)) {
- if (!has_body) {
- /* this entity was declared, but is defined nowhere */
- set_entity_peculiarity(irentity, peculiarity_description);
+ irentity = new_d_entity(owner_type, id, ir_type_method, dbgi);
+
+ ident *ld_id;
+ if (nested_function)
+ ld_id = id_unique("inner.%u");
+ else
+ ld_id = create_ld_ident(entity);
+ set_entity_ld_ident(irentity, ld_id);
+
+ handle_decl_modifiers(irentity, entity);
+
+ if (! nested_function) {
+ /* static inline => local
+ * extern inline => local
+ * inline without definition => local
+ * inline with definition => external_visible */
+ storage_class_tag_t const storage_class
+ = (storage_class_tag_t) entity->declaration.storage_class;
+ bool const is_inline = entity->function.is_inline;
+
+ if (is_inline && storage_class == STORAGE_CLASS_NONE && has_body) {
+ set_entity_visibility(irentity, visibility_external_visible);
+ } else if (storage_class == STORAGE_CLASS_STATIC ||
+ (is_inline && has_body)) {
+ if (!has_body) {
+ /* this entity was declared, but is defined nowhere */
+ set_entity_peculiarity(irentity, peculiarity_description);
+ }
+ set_entity_visibility(irentity, visibility_local);
+ } else if (has_body) {
+ set_entity_visibility(irentity, visibility_external_visible);
+ } else {
+ set_entity_visibility(irentity, visibility_external_allocated);
}
- set_entity_visibility(irentity, visibility_local);
- } else if (has_body) {
- set_entity_visibility(irentity, visibility_external_visible);
} else {
- set_entity_visibility(irentity, visibility_external_allocated);
+ /* nested functions are always local */
+ set_entity_visibility(irentity, visibility_local);
}
set_entity_allocation(irentity, allocation_static);
/* We should check for file scope here, but as long as we compile C only
this is not needed. */
- if (! firm_opt.freestanding) {
+ if (! firm_opt.freestanding && !has_body) {
/* check for a known runtime function */
for (size_t i = 0; i < lengthof(rts_data); ++i) {
if (id != rts_idents[i])
return new_d_Const(dbgi, tv);
}
+/*
+ * Allocate an area of size bytes aligned at alignment
+ * at a frame type.
+ */
+static ir_entity *alloc_trampoline(ir_type *frame_type, int size, unsigned alignment) {
+ static unsigned area_cnt = 0;
+ char buf[32];
+
+ snprintf(buf, sizeof(buf), "trampolin%u", area_cnt++);
+ ident *name = new_id_from_str(buf);
+
+ ir_type *tp = new_type_array(id_mangle_u(get_type_ident(frame_type), name), 1, ir_type_char);
+ set_array_bounds_int(tp, 0, 0, size);
+ set_type_alignment_bytes(tp, alignment);
+
+ ir_entity *area = new_entity(frame_type, name, tp);
+
+ /* mark this entity as compiler generated */
+ set_entity_compiler_generated(area, 1);
+ return area;
+}
+
+/**
+ * Return a node representing a trampoline reagion
+ * for a given entity.
+ *
+ * @param dbgi debug info
+ * @param entity the entity
+ */
+static ir_node *get_trampoline_region(dbg_info *dbgi, ir_entity *entity)
+{
+ ir_entity *region = NULL;
+ int i;
+
+ if (current_trampolines != NULL) {
+ for (i = ARR_LEN(current_trampolines) - 1; i >= 0; --i) {
+ if (current_trampolines[i].function == entity) {
+ region = current_trampolines[i].region;
+ break;
+ }
+ }
+ } else {
+ current_trampolines = NEW_ARR_F(trampoline_region, 0);
+ }
+ ir_graph *irg = current_ir_graph;
+ if (region == NULL) {
+ /* create a new region */
+ ir_type *frame_tp = get_irg_frame_type(irg);
+ trampoline_region reg;
+ reg.function = entity;
+
+ reg.region = alloc_trampoline(frame_tp,
+ be_params->trampoline_size,
+ be_params->trampoline_align);
+ ARR_APP1(trampoline_region, current_trampolines, reg);
+ region = reg.region;
+ }
+ return new_d_simpleSel(dbgi, get_irg_no_mem(irg), get_irg_frame(irg),
+ region);
+}
+
+
/**
* Creates a SymConst for a given entity.
*
* @param entity the entity
*/
static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
- ir_entity *entity)
+ ir_entity *entity)
{
assert(entity != NULL);
union symconst_symbol sym;
return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
}
+/**
+ * Creates a SymConst for a given trampoline of an entity.
+ *
+ * @param dbgi debug info
+ * @param mode the (reference) mode for the SymConst
+ * @param entity the entity
+ */
+static ir_node *create_trampoline(dbg_info *dbgi, ir_mode *mode,
+ ir_entity *entity)
+{
+ assert(entity != NULL);
+ ir_node *in[3];
+ in[0] = get_trampoline_region(dbgi, entity);
+ in[1] = create_symconst(dbgi, mode, entity);
+ in[2] = get_irg_frame(current_ir_graph);
+
+ ir_node *irn = new_d_Builtin(dbgi, get_store(), ir_bk_inner_trampoline, 3, in, get_unknown_type());
+ set_store(new_Proj(irn, mode_M, pn_Builtin_M));
+ return new_Proj(irn, mode, pn_Builtin_1_result);
+}
+
/**
* Creates a SymConst node representing a string constant.
*
return create_symconst(dbgi, mode_P_data, entity);
}
+/**
+ * Dereference an address.
+ *
+ * @param dbgi debug info
+ * @param type the type of the dereferenced result (the points_to type)
+ * @param addr the address to dereference
+ */
static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
ir_node *const addr)
{
}
/**
- * Creates a strict Conv if necessary.
+ * Creates a strict Conv (to the node's mode) if necessary.
+ *
+ * @param dbgi debug info
+ * @param node the node to strict conv
*/
static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
{
return new_d_strictConv(dbgi, node, mode);
}
+/**
+ * Returns the address of a global variable.
+ *
+ * @param dbgi debug info
+ * @param variable the variable
+ */
static ir_node *get_global_var_address(dbg_info *const dbgi,
- const entity_t *const entity)
+ const variable_t *const variable)
{
- assert(entity->kind == ENTITY_VARIABLE);
- assert(entity->declaration.kind == DECLARATION_KIND_GLOBAL_VARIABLE);
-
- ir_entity *const irentity = entity->variable.v.entity;
- if (entity->variable.thread_local) {
+ ir_entity *const irentity = variable->v.entity;
+ if (variable->thread_local) {
ir_node *const no_mem = new_NoMem();
ir_node *const tls = get_irg_tls(current_ir_graph);
return new_d_simpleSel(dbgi, no_mem, tls, irentity);
{
ir_graph *const irg = current_ir_graph;
const ir_type *const owner = get_entity_owner(ent);
- if (owner == get_irg_frame_type(irg)) {
- return get_irg_frame(irg);
+ if (owner == current_outer_frame || owner == current_outer_value_type) {
+ assert(current_static_link != NULL);
+ return current_static_link;
} else {
- assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
- return get_irg_value_param_base(irg);
+ return get_irg_frame(irg);
}
}
/* inner function not using the closure */
return create_symconst(dbgi, mode, entity->function.entity);
} else {
- /* TODO: need trampoline here */
- panic("Trampoline code not implemented");
- return create_symconst(dbgi, mode, entity->function.entity);
+ /* need trampoline here */
+ return create_trampoline(dbgi, mode, entity->function.entity);
}
}
case DECLARATION_KIND_GLOBAL_VARIABLE: {
- ir_node *const addr = get_global_var_address(dbgi, entity);
- return deref_address(dbgi, entity->declaration.type, addr);
+ const variable_t *variable = &entity->variable;
+ ir_node *const addr = get_global_var_address(dbgi, variable);
+ return deref_address(dbgi, variable->base.type, addr);
}
case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
* as an indicator for no real address) */
return NULL;
case DECLARATION_KIND_GLOBAL_VARIABLE: {
- ir_node *const addr = get_global_var_address(dbgi, entity);
+ ir_node *const addr = get_global_var_address(dbgi, &entity->variable);
return addr;
}
case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
return create_symconst(dbgi, mode, entity->function.entity);
}
- case DECLARATION_KIND_INNER_FUNCTION:
+ case DECLARATION_KIND_INNER_FUNCTION: {
+ type_t *const type = skip_typeref(entity->declaration.type);
+ ir_mode *const mode = get_ir_mode_storage(type);
+ if (!entity->function.goto_to_outer && !entity->function.need_closure) {
+ /* inner function not using the closure */
+ return create_symconst(dbgi, mode, entity->function.entity);
+ } else {
+ /* need trampoline here */
+ return create_trampoline(dbgi, mode, entity->function.entity);
+ }
+ }
+
case DECLARATION_KIND_COMPOUND_MEMBER:
panic("not implemented reference type");
}
return NULL;
case bk_gnu_builtin_frame_address: {
expression_t *const expression = call->arguments->expression;
- long val = fold_constant(expression);
- if (val == 0) {
+ bool val = fold_constant_to_bool(expression);
+ if (!val) {
/* the nice case */
return get_irg_frame(current_ir_graph);
} else {
}
}
case bk_gnu_builtin_return_address: {
+
expression_t *const expression = call->arguments->expression;
ir_node *in[2];
ir_node *offset;
if (is_type_pointer(type)) {
pointer_type_t *pointer_type = &type->pointer;
- offset = get_type_size(pointer_type->points_to);
+ offset = get_type_size_node(pointer_type->points_to);
} else {
assert(is_type_arithmetic(type));
offset = new_Const(get_mode_one(mode));
ir_node *value_node = expression_to_firm(value);
type_t *value_type = skip_typeref(value->base.type);
assert(is_type_pointer(value_type));
+
+ /* check for __based */
+ const variable_t *const base_var = value_type->pointer.base_variable;
+ if (base_var != NULL) {
+ ir_node *const addr = get_global_var_address(dbgi, base_var);
+ ir_node *const base = deref_address(dbgi, base_var->base.type, addr);
+ value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(value_type));
+ }
type_t *points_to = value_type->pointer.points_to;
return deref_address(dbgi, points_to, value_node);
}
case EXPR_UNARY_CAST: {
ir_node *value_node = expression_to_firm(value);
if (is_type_scalar(type)) {
- ir_mode *mode = get_ir_mode_storage(type);
+ ir_mode *mode = get_ir_mode_storage(type);
+ type_t *from_type = skip_typeref(value->base.type);
+ /* check for conversion from / to __based types */
+ if (is_type_pointer(type) && is_type_pointer(from_type)) {
+ const variable_t *from_var = from_type->pointer.base_variable;
+ const variable_t *to_var = type->pointer.base_variable;
+ if (from_var != to_var) {
+ if (from_var != NULL) {
+ ir_node *const addr = get_global_var_address(dbgi, from_var);
+ ir_node *const base = deref_address(dbgi, from_var->base.type, addr);
+ value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(from_type));
+ }
+ if (to_var != NULL) {
+ ir_node *const addr = get_global_var_address(dbgi, to_var);
+ ir_node *const base = deref_address(dbgi, to_var->base.type, addr);
+ value_node = new_d_Sub(dbgi, value_node, base, mode);
+ }
+ }
+ }
ir_node *node = create_conv(dbgi, value_node, mode);
node = do_strict_conv(dbgi, node);
ir_mode *mode_arith = get_ir_mode_arithmetic(type);
assert(is_type_pointer(type));
pointer_type_t *const pointer_type = &type->pointer;
type_t *const points_to = skip_typeref(pointer_type->points_to);
- ir_node * elem_size = get_type_size(points_to);
+ ir_node * elem_size = get_type_size_node(points_to);
elem_size = create_conv(dbgi, elem_size, mode);
value = create_conv(dbgi, value, mode);
ir_node *const mul = new_d_Mul(dbgi, value, elem_size, mode);
const pointer_type_t *const ptr_type = &type_left->pointer;
mode = get_ir_mode_arithmetic(expression->base.type);
- ir_node *const elem_size = get_type_size(ptr_type->points_to);
+ ir_node *const elem_size = get_type_size_node(ptr_type->points_to);
ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
ir_node *const no_mem = new_NoMem();
ir_mode *mode = get_ir_mode_arithmetic(type);
if (is_constant_expression(expression->left)) {
- long val = fold_constant(expression->left);
+ bool val = fold_constant_to_bool(expression->left);
expression_kind_t ekind = expression->base.kind;
assert(ekind == EXPR_BINARY_LOGICAL_AND || ekind == EXPR_BINARY_LOGICAL_OR);
if (ekind == EXPR_BINARY_LOGICAL_AND) {
- if (val == 0) {
+ if (!val) {
return new_Const(get_mode_null(mode));
}
} else {
- if (val != 0) {
+ if (val) {
return new_Const(get_mode_one(mode));
}
}
if (is_constant_expression(expression->right)) {
- long const valr = fold_constant(expression->right);
- return valr != 0 ?
+ bool valr = fold_constant_to_bool(expression->right);
+ return valr ?
new_Const(get_mode_one(mode)) :
new_Const(get_mode_null(mode));
}
assert(designator->array_index != NULL);
assert(is_type_array(type));
- long index = fold_constant(array_index);
+ long index = fold_constant_to_int(array_index);
ir_type *arr_type = get_ir_type(type);
ir_type *elem_type = get_array_element_type(arr_type);
long elem_size = get_type_size_bytes(elem_type);
create_local_initializer(initializer, dbgi, entity, type);
/* create a sel for the compound literal address */
- ir_node *frame = get_local_frame(entity);
+ ir_node *frame = get_irg_frame(current_ir_graph);
ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
return sel;
}
expression_to_firm(expression->tp_expression);
}
- return get_type_size(type);
+ return get_type_size_node(type);
}
static entity_t *get_expression_entity(const expression_t *expression)
return expression->reference.entity;
}
+static unsigned get_cparser_entity_alignment(const entity_t *entity)
+{
+ switch(entity->kind) {
+ DECLARATION_KIND_CASES
+ return entity->declaration.alignment;
+ case ENTITY_STRUCT:
+ case ENTITY_UNION:
+ return entity->compound.alignment;
+ case ENTITY_TYPEDEF:
+ return entity->typedefe.alignment;
+ default:
+ break;
+ }
+ return 0;
+}
+
/**
* Transform an alignof expression into Firm code.
*/
static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
{
- ir_entity *irentity = NULL;
+ unsigned alignment = 0;
const expression_t *tp_expression = expression->tp_expression;
if (tp_expression != NULL) {
entity_t *entity = get_expression_entity(tp_expression);
- if (entity != NULL && is_declaration(entity)) {
- switch (entity->declaration.kind) {
- case DECLARATION_KIND_UNKNOWN:
- panic("unknown entity reference found");
- case DECLARATION_KIND_COMPOUND_MEMBER:
- irentity = entity->compound_member.entity;
- break;
- case DECLARATION_KIND_GLOBAL_VARIABLE:
- case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
- irentity = entity->variable.v.entity;
- break;
- case DECLARATION_KIND_PARAMETER_ENTITY:
- irentity = entity->parameter.v.entity;
- break;
- case DECLARATION_KIND_FUNCTION:
- case DECLARATION_KIND_INNER_FUNCTION:
- irentity = entity->function.entity;
- break;
- case DECLARATION_KIND_PARAMETER:
- case DECLARATION_KIND_LOCAL_VARIABLE:
- case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
- break;
- }
+ if (entity != NULL) {
+ alignment = get_cparser_entity_alignment(entity);
}
}
- ir_type *irtype;
- if (irentity != NULL) {
- irtype = get_entity_type(irentity);
- } else {
+ if (alignment == 0) {
type_t *type = expression->type;
- irtype = get_ir_type(type);
+ alignment = get_type_alignment(type);
}
- ir_mode *const mode = get_ir_mode_arithmetic(expression->base.type);
- symconst_symbol sym;
- sym.type_p = irtype;
- return new_SymConst(mode, sym, symconst_type_align);
+ dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
+ ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
+ tarval *tv = new_tarval_from_long(alignment, mode);
+ return new_d_Const(dbgi, tv);
}
static void init_ir_types(void);
-long fold_constant(const expression_t *expression)
+static tarval *fold_constant_to_tarval(const expression_t *expression)
{
assert(is_type_valid(skip_typeref(expression->base.type)));
panic("couldn't fold constant");
}
+ constant_folding = constant_folding_old;
+
tarval *tv = get_Const_tarval(cnst);
+ return tv;
+}
+
+long fold_constant_to_int(const expression_t *expression)
+{
+ if (expression->kind == EXPR_INVALID)
+ return 0;
+
+ tarval *tv = fold_constant_to_tarval(expression);
if (!tarval_is_long(tv)) {
panic("result of constant folding is not integer");
}
- constant_folding = constant_folding_old;
-
return get_tarval_long(tv);
}
+bool fold_constant_to_bool(const expression_t *expression)
+{
+ if (expression->kind == EXPR_INVALID)
+ return false;
+ tarval *tv = fold_constant_to_tarval(expression);
+ return !tarval_is_null(tv);
+}
+
static ir_node *conditional_to_firm(const conditional_expression_t *expression)
{
dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
/* first try to fold a constant condition */
if (is_constant_expression(expression->condition)) {
- long val = fold_constant(expression->condition);
+ bool val = fold_constant_to_bool(expression->condition);
if (val) {
expression_t *true_expression = expression->true_expression;
if (true_expression == NULL)
ir_type *const method_type = get_ir_type(type);
int const n = get_method_n_params(method_type) - 1;
ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
- ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
+ ir_node *const frame = get_irg_frame(current_ir_graph);
dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
ir_node *const no_mem = new_NoMem();
ir_node *const arg_sel =
- new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
+ new_d_simpleSel(dbgi, no_mem, frame, parm_ent);
- ir_node *const cnst = get_type_size(expr->parameter->base.type);
+ type_t *const param_type = expr->parameter->base.type;
+ ir_node *const cnst = get_type_size_node(param_type);
ir_mode *const mode = get_irn_mode(cnst);
ir_node *const c1 = new_Const_long(mode, stack_param_align - 1);
ir_node *const c2 = new_d_Add(dbgi, cnst, c1, mode);
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 cnst = get_type_size_node(expr->base.type);
ir_mode *const mode = get_irn_mode(cnst);
ir_node *const c1 = new_Const_long(mode, stack_param_align - 1);
ir_node *const c2 = new_d_Add(dbgi, cnst, c1, mode);
*/
static ir_node *va_copy_expression_to_firm(const va_copy_expression_t *const expr)
{
- dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
- ir_node *const src = expression_to_firm(expr->src);
+ ir_node *const src = expression_to_firm(expr->src);
set_value_for_expression(expr->dst, src);
return NULL;
}
if (is_builtin_expect(expression) && is_Cond(cond)) {
call_argument_t *argument = expression->call.arguments->next;
if (is_constant_expression(argument->expression)) {
- long cnst = fold_constant(argument->expression);
+ bool cnst = fold_constant_to_bool(argument->expression);
cond_jmp_predicate pred;
- if (cnst == 0) {
+ if (cnst == false) {
pred = COND_JMP_PRED_FALSE;
} else {
pred = COND_JMP_PRED_TRUE;
return cond_expr;
}
-
static void create_variable_entity(entity_t *variable,
declaration_kind_t declaration_kind,
ir_type *parent_type)
{
assert(variable->kind == ENTITY_VARIABLE);
type_t *type = skip_typeref(variable->declaration.type);
- type = get_aligned_type(type, variable->variable.alignment);
- ident *const id = new_id_from_str(variable->base.symbol->string);
- ir_type *const irtype = get_ir_type(type);
- dbg_info *const dbgi = get_dbg_info(&variable->base.source_position);
+ ident *const id = new_id_from_str(variable->base.symbol->string);
+ ir_type *const irtype = get_ir_type(type);
+ dbg_info *const dbgi = get_dbg_info(&variable->base.source_position);
+ ir_entity *const irentity = new_d_entity(parent_type, id, irtype, dbgi);
+ unsigned alignment = variable->declaration.alignment;
- ir_entity *const irentity = new_d_entity(parent_type, id, irtype, dbgi);
+ set_entity_alignment(irentity, alignment);
- handle_gnu_attributes_ent(irentity, variable);
+ handle_decl_modifiers(irentity, variable);
variable->declaration.kind = (unsigned char) declaration_kind;
variable->variable.v.entity = irentity;
assert(designator->array_index != NULL);
assert(is_type_array(type));
- long index = fold_constant(array_index);
+ long index = fold_constant_to_int(array_index);
assert(index >= 0);
#ifndef NDEBUG
if (type->array.size_constant) {
static void create_dynamic_initializer(ir_initializer_t *initializer,
dbg_info *dbgi, ir_entity *entity)
{
- ir_node *frame = get_local_frame(entity);
+ ir_node *frame = get_irg_frame(current_ir_graph);
ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
ir_type *type = get_entity_type(entity);
ir_entity *irentity = entity->variable.v.entity;
type_t *type = entity->declaration.type;
- type = get_aligned_type(type, entity->variable.alignment);
create_local_initializer(initializer, dbgi, irentity, type);
}
ir_type *el_type = get_ir_type(type->array.element_type);
/* make sure size_node is calculated */
- get_type_size(type);
+ get_type_size_node(type);
ir_node *elems = type->array.size_node;
ir_node *mem = get_store();
ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
assert(entity->kind == ENTITY_VARIABLE);
assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
- type_t *type = skip_typeref(entity->declaration.type);
- type = get_aligned_type(type, entity->variable.alignment);
-
- ir_type *const var_type = entity->variable.thread_local ?
+ type_t *type = skip_typeref(entity->declaration.type);
+ ir_type *const var_type = entity->variable.thread_local ?
get_tls_type() : get_glob_type();
- ir_type *const irtype = get_ir_type(type);
- dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
+ ir_type *const irtype = get_ir_type(type);
+ dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
size_t l = strlen(entity->base.symbol->string);
char buf[l + sizeof(".%u")];
case STORAGE_CLASS_EXTERN:
if (entity->kind == ENTITY_FUNCTION) {
assert(entity->function.statement == NULL);
- get_function_entity(entity);
+ (void)get_function_entity(entity, NULL);
} else {
create_global_variable(entity);
create_variable_initializer(entity);
case STORAGE_CLASS_REGISTER:
if (entity->kind == ENTITY_FUNCTION) {
if (entity->function.statement != NULL) {
- get_function_entity(entity);
+ ir_type *owner = get_irg_frame_type(current_ir_graph);
+ (void)get_function_entity(entity, owner);
entity->declaration.kind = DECLARATION_KIND_INNER_FUNCTION;
enqueue_inner_function(entity);
} else {
- get_function_entity(entity);
+ (void)get_function_entity(entity, NULL);
}
} else {
create_local_variable(entity);
if (entity->base.symbol == NULL)
return;
+ // no need to emit code in dead blocks
+ if (entity->declaration.storage_class != STORAGE_CLASS_STATIC
+ && get_cur_block() == NULL)
+ return;
+
switch ((declaration_kind_t) entity->declaration.kind) {
case DECLARATION_KIND_LOCAL_VARIABLE:
case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
if (is_declaration(entity)) {
initialize_local_declaration(entity);
} else if (entity->kind == ENTITY_TYPEDEF) {
+ /* ยง6.7.7:3 Any array size expressions associated with variable length
+ * array declarators are evaluated each time the declaration of the
+ * typedef name is reached in the order of execution. */
type_t *const type = skip_typeref(entity->typedefe.type);
if (is_type_array(type) && type->array.is_vla)
get_vla_size(&type->array);
/* shortcut for while(true) */
if (is_constant_expression(statement->condition)
- && fold_constant(statement->condition) != 0) {
+ && fold_constant_to_bool(statement->condition) != 0) {
set_cur_block(header_block);
ir_node *header_jmp = new_Jmp();
add_immBlock_pred(body_block, header_jmp);
}
if (def_nr == INT_MAX) {
- /* Bad: an overflow will occurr, we cannot be sure that the
+ /* Bad: an overflow will occur, we cannot be sure that the
* maximum + 1 is a free number. Scan the values a second
* time to find a free number.
*/
}
}
/* 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
+ * Either they are dense, so we took the last (num_cases)
+ * one, or they are not dense, so we will find one free
* there...
*/
unsigned long i;
do {
proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
add_immBlock_pred(block, proj);
- } while(pn++ < end_pn);
+ } while (pn++ < end_pn);
} else {
saw_default_label = true;
proj = new_d_defaultProj(dbgi, current_switch_cond,
}
}
+/**
+ * Return the number of local (alias free) variables used by a function.
+ */
static int get_function_n_local_vars(entity_t *entity)
{
+ const function_t *function = &entity->function;
int count = 0;
/* count parameters */
- count += count_local_variables(entity->function.parameters.entities, NULL);
+ count += count_local_variables(function->parameters.entities, NULL);
/* count local variables declared in body */
- walk_statements(entity->function.statement, count_local_variables_in_stmt,
- &count);
+ walk_statements(function->statement, count_local_variables_in_stmt, &count);
return count;
}
+/**
+ * Build Firm code for the parameters of a function.
+ */
static void initialize_function_parameters(entity_t *entity)
{
assert(entity->kind == ENTITY_FUNCTION);
ir_node *args = get_irg_args(irg);
ir_node *start_block = get_irg_start_block(irg);
ir_type *function_irtype = get_ir_type(entity->declaration.type);
+ int first_param_nr = 0;
+
+ if (entity->function.need_closure) {
+ /* add an extra parameter for the static link */
+ entity->function.static_link = new_r_Proj(irg, start_block, args, mode_P_data, 0);
+ ++first_param_nr;
+ }
int n = 0;
entity_t *parameter = entity->function.parameters.entities;
ir_type *param_irtype = get_method_param_type(function_irtype, n);
ir_mode *param_mode = get_type_mode(param_irtype);
- long pn = n;
+ long pn = n + first_param_nr;
ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn);
ir_mode *mode = get_ir_mode_storage(type);
* @param irg the IR-graph
* @param dec_modifiers additional modifiers
*/
-static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
+static void handle_decl_modifier_irg(ir_graph_ptr irg,
+ decl_modifiers_t decl_modifiers)
{
if (decl_modifiers & DM_RETURNS_TWICE) {
/* TRUE if the declaration includes __attribute__((returns_twice)) */
}
/**
- * Create code for a function.
+ * Create code for a function and all inner functions.
+ *
+ * @param entity the function entity
*/
static void create_function(entity_t *entity)
{
assert(entity->kind == ENTITY_FUNCTION);
- ir_entity *function_entity = get_function_entity(entity);
+ ir_entity *function_entity = get_function_entity(entity, current_outer_frame);
if (entity->function.statement == NULL)
return;
+ inner_functions = NULL;
+ current_trampolines = NULL;
+
if (entity->declaration.modifiers & DM_CONSTRUCTOR) {
ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
add_function_pointer(segment, function_entity, "constructor_ptr.%u");
next_value_number_function = 0;
initialize_function_parameters(entity);
+ current_static_link = entity->function.static_link;
statement_to_firm(entity->function.statement);
irg_vrfy(irg);
current_function = old_current_function;
- /* create inner functions */
- entity_t *inner;
- for (inner = next_inner_function(); inner != NULL;
- inner = next_inner_function()) {
- create_function(inner);
+ if (current_trampolines != NULL) {
+ DEL_ARR_F(current_trampolines);
+ current_trampolines = NULL;
+ }
+
+ /* create inner functions if any */
+ entity_t **inner = inner_functions;
+ if (inner != NULL) {
+ ir_type *rem_outer_frame = current_outer_frame;
+ current_outer_frame = get_irg_frame_type(current_ir_graph);
+ ir_type *rem_outer_value_type = current_outer_value_type;
+ current_outer_value_type = get_irg_value_param_type(current_ir_graph);
+ for (int i = ARR_LEN(inner) - 1; i >= 0; --i) {
+ create_function(inner[i]);
+ }
+ DEL_ARR_F(inner);
+
+ current_outer_value_type = rem_outer_value_type;
+ current_outer_frame = rem_outer_frame;
}
}
/* builtins have no representation */
continue;
}
- get_function_entity(entity);
+ (void)get_function_entity(entity, NULL);
} else if (entity->kind == ENTITY_VARIABLE) {
create_global_variable(entity);
}
ir_types_initialized = 1;
ir_type_int = get_ir_type(type_int);
+ ir_type_char = get_ir_type(type_char);
ir_type_const_char = get_ir_type(type_const_char);
ir_type_wchar_t = get_ir_type(type_wchar_t);
ir_type_void = get_ir_type(type_void);
- const backend_params *be_params = be_get_backend_param();
+ be_params = be_get_backend_param();
mode_float_arithmetic = be_params->mode_float_arithmetic;
- stack_param_align = be_params->stack_param_align;
+ stack_param_align = be_params->stack_param_align;
}
void exit_ast2firm(void)
current_translation_unit = unit;
init_ir_types();
- inner_functions = NEW_ARR_F(entity_t *, 0);
scope_to_firm(&unit->scope);
global_asm_to_firm(unit->global_asm);
- DEL_ARR_F(inner_functions);
- inner_functions = NULL;
-
current_ir_graph = NULL;
current_translation_unit = NULL;
}
projects / cparser / blobdiff