X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ast2firm.c;h=ab7516b6a72ee56a24c0ab84b6c5044b78c209c2;hb=1c4280092863759931f2fd0753bee70c2f540808;hp=c9322a2a3c9f9ad66fc6fa39b13268f59092c295;hpb=e9887d8cbc4d73a9a63cc82dbf20b4bf82ecbd15;p=cparser diff --git a/ast2firm.c b/ast2firm.c index c9322a2..ab7516b 100644 --- a/ast2firm.c +++ b/ast2firm.c @@ -1,6 +1,6 @@ /* * This file is part of cparser. - * Copyright (C) 2007-2008 Matthias Braun + * Copyright (C) 2007-2009 Matthias Braun * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License @@ -79,6 +79,7 @@ static label_t **all_labels; static entity_t **inner_functions; static ir_node *ijmp_list; static bool constant_folding; +static bool initializer_use_bitfield_basetype; extern bool have_const_functions; @@ -260,13 +261,13 @@ static ir_node *get_vla_size(array_type_t *const type) /** * 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; @@ -290,28 +291,15 @@ static unsigned count_parameters(const function_type_t *function_type) 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); @@ -336,14 +324,15 @@ static ir_type *create_complex_type(const complex_type_t *type) /** * Creates a Firm type for an imaginary type */ -static ir_type *create_imaginary_type(const imaginary_type_t *type) +static ir_type *create_imaginary_type(imaginary_type_t *type) { atomic_type_kind_t kind = type->akind; ir_mode *mode = atomic_modes[kind]; ident *id = get_mode_ident(mode); ir_type *irtype = new_type_primitive(id, mode); + il_alignment_t alignment = get_type_alignment((type_t*) type); - set_type_alignment_bytes(irtype, type->base.alignment); + set_type_alignment_bytes(irtype, alignment); return irtype; } @@ -352,10 +341,11 @@ static ir_type *create_imaginary_type(const imaginary_type_t *type) * 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; } @@ -391,9 +381,10 @@ static ir_type *create_method_type(const function_type_t *function_type, bool fo ++n; } - if (function_type->variadic || function_type->unspecified_parameters) { + bool is_variadic = function_type->variadic; + + if (is_variadic) set_method_variadicity(irtype, variadicity_variadic); - } unsigned cc = get_method_calling_convention(irtype); switch (function_type->calling_convention) { @@ -404,7 +395,7 @@ is_cdecl: break; case CC_STDCALL: - if (function_type->variadic || function_type->unspecified_parameters) + if (is_variadic) goto is_cdecl; /* only non-variadic function can use stdcall, else use cdecl */ @@ -412,7 +403,7 @@ is_cdecl: break; case CC_FASTCALL: - if (function_type->variadic || function_type->unspecified_parameters) + if (is_variadic) goto is_cdecl; /* only non-variadic function can use fastcall, else use cdecl */ set_method_calling_convention(irtype, SET_FASTCALL(cc)); @@ -574,13 +565,8 @@ enum { /** * 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; @@ -589,41 +575,38 @@ static ir_type *create_compound_type(compound_type_t *type, ir_type *irtype, 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 (is_union) { + layout_union_type(type); + } else { + layout_struct_type(type); + } + compound->irtype_complete = true; entity_t *entry = compound->members.entities; @@ -631,130 +614,37 @@ static ir_type *create_compound_type(compound_type_t *type, ir_type *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; + entry->compound_member.bit_offset); -finished_member: - if (is_union) { - size_t entry_size = offset - prev_offset; - if (entry_size > size) { - size = entry_size; - } - offset = 0; - bit_offset = 0; - } - } - - 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; } @@ -790,7 +680,7 @@ static ir_type *create_enum_type(enum_type_t *const type) 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) @@ -805,11 +695,9 @@ 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); } @@ -830,11 +718,10 @@ ir_type *get_ir_type(type_t *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); @@ -855,12 +742,10 @@ ir_type *get_ir_type(type_t *type) 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); @@ -1005,7 +890,7 @@ static ident* (*create_ld_ident)(entity_t*) = create_name_linux_elf; * @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; @@ -1051,8 +936,8 @@ static bool is_main(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) { - return entity->function.entity; + if (entity->function.irentity != NULL) { + return entity->function.irentity; } if (is_main(entity)) { @@ -1104,7 +989,7 @@ static ir_entity *get_function_entity(entity_t *entity, ir_type *owner_type) ld_id = create_ld_ident(entity); set_entity_ld_ident(irentity, ld_id); - handle_gnu_attributes_ent(irentity, entity); + handle_decl_modifiers(irentity, entity); if (! nested_function) { /* static inline => local @@ -1154,8 +1039,8 @@ static ir_entity *get_function_entity(entity_t *entity, ir_type *owner_type) entitymap_insert(&entitymap, symbol, irentity); entity_created: - entity->declaration.kind = DECLARATION_KIND_FUNCTION; - entity->function.entity = irentity; + entity->declaration.kind = DECLARATION_KIND_FUNCTION; + entity->function.irentity = irentity; return irentity; } @@ -1342,7 +1227,7 @@ static ir_node *create_trampoline(dbg_info *dbgi, ir_mode *mode, 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()); + ir_node *irn = new_d_Builtin(dbgi, get_store(), 3, in, ir_bk_inner_trampoline, get_unknown_type()); set_store(new_Proj(irn, mode_M, pn_Builtin_M)); return new_Proj(irn, mode, pn_Builtin_1_result); } @@ -1368,6 +1253,7 @@ static ir_node *string_to_firm(const source_position_t *const src_pos, set_entity_ld_ident(entity, id); set_entity_variability(entity, variability_constant); set_entity_allocation(entity, allocation_static); + set_entity_visibility(entity, visibility_local); ir_type *const elem_type = ir_type_const_char; ir_mode *const mode = get_type_mode(elem_type); @@ -1570,6 +1456,21 @@ static ir_node *reference_expression_to_firm(const reference_expression_t *ref) /* make sure the type is constructed */ (void) get_ir_type(type); + /* for gcc compatibility we have to produce (dummy) addresses for some + * builtins */ + if (entity->kind == ENTITY_FUNCTION && entity->function.btk != bk_none) { + if (warning.other) { + warningf(&ref->base.source_position, + "taking address of builtin '%Y'", ref->entity->base.symbol); + } + + /* simply create a NULL pointer */ + ir_mode *mode = get_ir_mode_arithmetic(type_void_ptr); + ir_node *res = new_Const_long(mode, 0); + + return res; + } + switch ((declaration_kind_t) entity->declaration.kind) { case DECLARATION_KIND_UNKNOWN: break; @@ -1586,31 +1487,16 @@ static ir_node *reference_expression_to_firm(const reference_expression_t *ref) } case DECLARATION_KIND_FUNCTION: { ir_mode *const mode = get_ir_mode_storage(type); - - if (entity->function.btk != bk_none) { - /* for gcc compatibility we have to produce (dummy) addresses for some - * builtins */ - if (warning.other) { - warningf(&ref->base.source_position, - "taking address of builtin '%Y'", ref->entity->base.symbol); - } - - /* simply create a NULL pointer */ - ir_mode *mode = get_ir_mode_arithmetic(type_void_ptr); - ir_node *res = new_Const_long(mode, 0); - - return res; - } - return create_symconst(dbgi, mode, entity->function.entity); + return create_symconst(dbgi, mode, entity->function.irentity); } case DECLARATION_KIND_INNER_FUNCTION: { ir_mode *const mode = get_ir_mode_storage(type); if (!entity->function.goto_to_outer && !entity->function.need_closure) { /* inner function not using the closure */ - return create_symconst(dbgi, mode, entity->function.entity); + return create_symconst(dbgi, mode, entity->function.irentity); } else { /* need trampoline here */ - return create_trampoline(dbgi, mode, entity->function.entity); + return create_trampoline(dbgi, mode, entity->function.irentity); } } case DECLARATION_KIND_GLOBAL_VARIABLE: { @@ -1681,7 +1567,7 @@ static ir_node *reference_addr(const reference_expression_t *ref) case DECLARATION_KIND_FUNCTION: { type_t *const type = skip_typeref(entity->declaration.type); ir_mode *const mode = get_ir_mode_storage(type); - return create_symconst(dbgi, mode, entity->function.entity); + return create_symconst(dbgi, mode, entity->function.irentity); } case DECLARATION_KIND_INNER_FUNCTION: { @@ -1689,10 +1575,10 @@ static ir_node *reference_addr(const reference_expression_t *ref) 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); + return create_symconst(dbgi, mode, entity->function.irentity); } else { /* need trampoline here */ - return create_trampoline(dbgi, mode, entity->function.entity); + return create_trampoline(dbgi, mode, entity->function.irentity); } } @@ -1718,7 +1604,7 @@ static ir_node *gen_unary_builtin(ir_builtin_kind kind, expression_t *op, type_t ir_type *tp = get_ir_type(function_type); ir_type *res = get_method_res_type(tp, 0); - ir_node *irn = new_d_Builtin(db, get_irg_no_mem(current_ir_graph), kind, 1, in, tp); + ir_node *irn = new_d_Builtin(db, get_irg_no_mem(current_ir_graph), 1, in, kind, tp); set_irn_pinned(irn, op_pin_state_floats); return new_Proj(irn, get_type_mode(res), pn_Builtin_1_result); } @@ -1739,7 +1625,7 @@ static ir_node *gen_unary_builtin_pinned(ir_builtin_kind kind, expression_t *op, ir_type *tp = get_ir_type(function_type); ir_type *res = get_method_res_type(tp, 0); ir_node *mem = get_store(); - ir_node *irn = new_d_Builtin(db, mem, kind, 1, in, tp); + ir_node *irn = new_d_Builtin(db, mem, 1, in, kind, tp); set_store(new_Proj(irn, mode_M, pn_Builtin_M)); return new_Proj(irn, get_type_mode(res), pn_Builtin_1_result); } @@ -1763,7 +1649,7 @@ static ir_node *gen_binary_builtin_mem(ir_builtin_kind kind, expression_t *op1, ir_type *tp = get_ir_type(function_type); ir_node *mem = get_store(); - ir_node *irn = new_d_Builtin(db, mem, kind, 2, in, tp); + ir_node *irn = new_d_Builtin(db, mem, 2, in, kind, tp); set_store(new_Proj(irn, mode_M, pn_Builtin_M)); return NULL; } @@ -1832,8 +1718,8 @@ static ir_node *process_builtin_call(const call_expression_t *call) 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 { @@ -1843,7 +1729,7 @@ static ir_node *process_builtin_call(const call_expression_t *call) in[0] = expression_to_firm(expression); in[1] = get_irg_frame(current_ir_graph); ir_type *tp = get_ir_type(function_type); - ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), ir_bk_frame_addess, 2, in, tp); + ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_frame_address, tp); return new_Proj(irn, mode_P_data, pn_Builtin_1_result); } } @@ -1855,7 +1741,7 @@ static ir_node *process_builtin_call(const call_expression_t *call) in[0] = expression_to_firm(expression); in[1] = get_irg_frame(current_ir_graph); ir_type *tp = get_ir_type(function_type); - ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), ir_bk_return_address, 2, in, tp); + ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_return_address, tp); return new_Proj(irn, mode_P_data, pn_Builtin_1_result); } case bk_gnu_builtin_ffs: @@ -1892,7 +1778,7 @@ static ir_node *process_builtin_call(const call_expression_t *call) in[2] = new_Const_long(mode_int, 3); } ir_type *tp = get_ir_type(function_type); - ir_node *irn = new_d_Builtin(dbgi, get_store(), ir_bk_prefetch, 3, in, tp); + ir_node *irn = new_d_Builtin(dbgi, get_store(), 3, in, ir_bk_prefetch, tp); set_store(new_Proj(irn, mode_M, pn_Builtin_M)); return NULL; } @@ -1900,13 +1786,13 @@ static ir_node *process_builtin_call(const call_expression_t *call) case bk_ms__ud2: { ir_type *tp = get_ir_type(function_type); - ir_node *irn = new_d_Builtin(dbgi, get_store(), ir_bk_trap, 0, NULL, tp); + ir_node *irn = new_d_Builtin(dbgi, get_store(), 0, NULL, ir_bk_trap, tp); set_store(new_Proj(irn, mode_M, pn_Builtin_M)); return NULL; } case bk_ms__debugbreak: { ir_type *tp = get_ir_type(function_type); - ir_node *irn = new_d_Builtin(dbgi, get_store(), ir_bk_debugbreak, 0, NULL, tp); + ir_node *irn = new_d_Builtin(dbgi, get_store(), 0, NULL, ir_bk_debugbreak, tp); set_store(new_Proj(irn, mode_M, pn_Builtin_M)); return NULL; } @@ -1916,7 +1802,7 @@ static ir_node *process_builtin_call(const call_expression_t *call) in[0] = new_Const_long(mode_int, 0); in[1] = get_irg_frame(current_ir_graph); ir_type *tp = get_ir_type(function_type); - ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), ir_bk_return_address, 2, in, tp); + ir_node *irn = new_d_Builtin(dbgi, get_irg_no_mem(current_ir_graph), 2, in, ir_bk_return_address, tp); return new_Proj(irn, mode_P_data, pn_Builtin_1_result); } case bk_ms_rotl: @@ -1970,28 +1856,32 @@ static ir_node *call_expression_to_firm(const call_expression_t *const call) const reference_expression_t *ref = &function->reference; entity_t *entity = ref->entity; - if (ref->entity->kind == ENTITY_FUNCTION && - ref->entity->function.btk != bk_none) { - return process_builtin_call(call); - } + if (entity->kind == ENTITY_FUNCTION) { + if (entity->function.btk != bk_none) { + return process_builtin_call(call); + } - if (entity->kind == ENTITY_FUNCTION - && entity->function.entity == rts_entities[rts_alloca]) { - /* handle alloca() call */ - expression_t *argument = call->arguments->expression; - ir_node *size = expression_to_firm(argument); - ir_mode *mode = get_ir_mode_arithmetic(type_size_t); + ir_entity *irentity = entity->function.irentity; + if (irentity == NULL) + irentity = get_function_entity(entity, NULL); - size = create_conv(dbgi, size, mode); + if (irentity == rts_entities[rts_alloca]) { + /* handle alloca() call */ + expression_t *argument = call->arguments->expression; + ir_node *size = expression_to_firm(argument); + ir_mode *mode = get_ir_mode_arithmetic(type_size_t); - ir_node *store = get_store(); - 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); + size = create_conv(dbgi, size, mode); - return res; + ir_node *store = get_store(); + ir_node *alloca = new_d_Alloc(dbgi, store, size, + firm_unknown_type, stack_alloc); + ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M); + set_store(proj_m); + ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res); + + return res; + } } } ir_node *callee = expression_to_firm(function); @@ -2356,7 +2246,7 @@ static ir_node *create_incdec(const unary_expression_t *expression) 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)); @@ -2509,6 +2399,50 @@ static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) } } +static ir_node *create_cast(dbg_info *dbgi, ir_node *value_node, + type_t *from_type, type_t *type) +{ + type = skip_typeref(type); + if (!is_type_scalar(type)) { + /* make sure firm type is constructed */ + (void) get_ir_type(type); + return value_node; + } + + from_type = skip_typeref(from_type); + ir_mode *mode = get_ir_mode_storage(type); + /* check for conversion from / to __based types */ + if (is_type_pointer(type) && is_type_pointer(from_type)) { + const variable_t *from_var = from_type->pointer.base_variable; + const variable_t *to_var = type->pointer.base_variable; + if (from_var != to_var) { + if (from_var != NULL) { + ir_node *const addr = 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); + } + } + } + + if (is_type_atomic(type, ATOMIC_TYPE_BOOL)) { + /* bool adjustments (we save a mode_Bu, but have to temporarily + * convert to mode_b so we only get a 0/1 value */ + value_node = create_conv(dbgi, value_node, mode_b); + } + + ir_mode *mode_arith = get_ir_mode_arithmetic(type); + ir_node *node = create_conv(dbgi, value_node, mode); + node = do_strict_conv(dbgi, node); + node = create_conv(dbgi, node, mode_arith); + + return node; +} + static ir_node *unary_expression_to_firm(const unary_expression_t *expression) { dbg_info *dbgi = get_dbg_info(&expression->base.source_position); @@ -2558,50 +2492,11 @@ static ir_node *unary_expression_to_firm(const unary_expression_t *expression) case EXPR_UNARY_PREFIX_INCREMENT: case EXPR_UNARY_PREFIX_DECREMENT: return create_incdec(expression); + case EXPR_UNARY_CAST_IMPLICIT: 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); - type_t *from_type = 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); - node = create_conv(dbgi, node, mode_arith); - return node; - } else { - /* make sure firm type is constructed */ - (void) get_ir_type(type); - return value_node; - } - } - case EXPR_UNARY_CAST_IMPLICIT: { - ir_node *value_node = expression_to_firm(value); - if (is_type_scalar(type)) { - ir_mode *mode = get_ir_mode_storage(type); - ir_node *res = create_conv(dbgi, value_node, mode); - ir_mode *mode_arith = get_ir_mode_arithmetic(type); - res = create_conv(dbgi, res, mode_arith); - return res; - } else { - return value_node; - } + type_t *from_type = value->base.type; + return create_cast(dbgi, value_node, from_type, type); } case EXPR_UNARY_ASSUME: if (firm_opt.confirm) @@ -2654,7 +2549,7 @@ static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi, 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); @@ -2684,7 +2579,7 @@ static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression, 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(); @@ -2785,22 +2680,22 @@ static ir_node *create_lazy_op(const binary_expression_t *expression) 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)); } @@ -2820,13 +2715,12 @@ 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; type_t *type = skip_typeref(left_expr->base.type); - ir_mode *left_mode = get_ir_mode_storage(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 = create_cast(dbgi, result, expression->right->base.type, type); result = do_strict_conv(dbgi, result); result = set_value_for_expression_addr(left_expr, result, left_addr); @@ -2974,7 +2868,7 @@ static long get_offsetof_offset(const offsetof_expression_t *expression) 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); @@ -3032,20 +2926,14 @@ static ir_node *compound_literal_to_firm( */ static ir_node *sizeof_to_firm(const typeprop_expression_t *expression) { - type_t *type = expression->type; - if (type == NULL) { - type = expression->tp_expression->base.type; - assert(type != NULL); - } - - type = skip_typeref(type); + type_t *const type = skip_typeref(expression->type); /* §6.5.3.4:2 if the type is a VLA, evaluate the expression. */ if (is_type_array(type) && type->array.is_vla && expression->tp_expression != NULL) { expression_to_firm(expression->tp_expression); } - return get_type_size(type); + return get_type_size_node(type); } static entity_t *get_expression_entity(const expression_t *expression) @@ -3056,59 +2944,51 @@ 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))); @@ -3129,23 +3009,40 @@ long fold_constant(const expression_t *expression) 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) @@ -3403,7 +3300,8 @@ static ir_node *va_start_expression_to_firm( ir_node *const arg_sel = 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); @@ -3424,7 +3322,7 @@ static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr) 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); @@ -3525,19 +3423,15 @@ static ir_node *get_label_block(label_t *label) * 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) +static ir_node *label_address_to_firm(const label_address_expression_t *label) { - ir_node *block = get_label_block(label->label); - ir_label_t nr = get_Block_label(block); + dbg_info *dbgi = get_dbg_info(&label->base.source_position); + ir_node *block = get_label_block(label->label); + ir_entity *entity = create_Block_entity(block); - 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); + value.entity_p = entity; + return new_d_SymConst(dbgi, mode_P_code, value, symconst_addr_ent); } /** @@ -3745,10 +3639,10 @@ static ir_node *create_condition_evaluation(const expression_t *expression, 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; @@ -3764,22 +3658,22 @@ static ir_node *create_condition_evaluation(const expression_t *expression, 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; @@ -3962,6 +3856,27 @@ static void walk_designator(type_path_t *path, const designator_t *designator) } assert(iter != NULL); + /* revert previous initialisations of other union elements */ + if (type->kind == TYPE_COMPOUND_UNION) { + ir_initializer_t *initializer = top->initializer; + if (initializer != NULL + && get_initializer_kind(initializer) == IR_INITIALIZER_COMPOUND) { + /* are we writing to a new element? */ + ir_initializer_t *oldi + = get_initializer_compound_value(initializer, index); + if (get_initializer_kind(oldi) == IR_INITIALIZER_NULL) { + /* clear initializer */ + size_t len + = get_initializer_compound_n_entries(initializer); + ir_initializer_t *nulli = get_initializer_null(); + for (size_t i = 0; i < len; ++i) { + set_initializer_compound_value(initializer, i, + nulli); + } + } + } + } + top->type = orig_type; top->compound_entry = iter; top->index = index; @@ -3971,7 +3886,7 @@ static void walk_designator(type_path_t *path, const designator_t *designator) 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) { @@ -4005,6 +3920,7 @@ static void advance_current_object(type_path_t *path) type_t *type = skip_typeref(top->type); if (is_type_union(type)) { + /* only the first element is initialized in unions */ top->compound_entry = NULL; } else if (is_type_struct(type)) { entity_t *entry = top->compound_entry; @@ -4048,8 +3964,18 @@ static ir_initializer_t *create_ir_initializer_value( if (is_type_compound(initializer->value->base.type)) { panic("initializer creation for compounds not implemented yet"); } - ir_node *value = expression_to_firm(initializer->value); - type_t *type = initializer->value->base.type; + type_t *type = initializer->value->base.type; + expression_t *expr = initializer->value; + if (initializer_use_bitfield_basetype) { + type_t *skipped = skip_typeref(type); + if (skipped->kind == TYPE_BITFIELD) { + /* remove the bitfield cast... */ + assert(expr->kind == EXPR_UNARY_CAST_IMPLICIT); + expr = expr->unary.value; + type = skipped->bitfield.base_type; + } + } + ir_node *value = expression_to_firm(expr); ir_mode *mode = get_ir_mode_storage(type); value = create_conv(NULL, value, mode); return create_initializer_const(value); @@ -4210,58 +4136,12 @@ static ir_initializer_t *create_ir_initializer( panic("unknown initializer"); } -static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi, - ir_node *base_addr) -{ - if (is_atomic_type(type)) { - ir_mode *mode = get_type_mode(type); - tarval *zero = get_mode_null(mode); - ir_node *cnst = new_d_Const(dbgi, zero); - - /* TODO: bitfields */ - ir_node *mem = get_store(); - ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst, cons_none); - ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M); - set_store(proj_m); - } else { - assert(is_compound_type(type)); - - int n_members; - if (is_Array_type(type)) { - assert(has_array_upper_bound(type, 0)); - n_members = get_array_upper_bound_int(type, 0); - } else { - n_members = get_compound_n_members(type); - } - - for (int i = 0; i < n_members; ++i) { - ir_node *addr; - ir_type *irtype; - if (is_Array_type(type)) { - ir_entity *entity = get_array_element_entity(type); - tarval *index_tv = new_tarval_from_long(i, mode_uint); - ir_node *cnst = new_d_Const(dbgi, index_tv); - ir_node *in[1] = { cnst }; - irtype = get_array_element_type(type); - addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity); - } else { - ir_entity *member = get_compound_member(type, i); - - irtype = get_entity_type(member); - addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member); - } - - create_dynamic_null_initializer(irtype, dbgi, addr); - } - } -} - static void create_dynamic_initializer_sub(ir_initializer_t *initializer, ir_entity *entity, ir_type *type, dbg_info *dbgi, ir_node *base_addr) { switch(get_initializer_kind(initializer)) { case IR_INITIALIZER_NULL: { - create_dynamic_null_initializer(type, dbgi, base_addr); + /* NULL is undefined for dynamic initializers */ return; } case IR_INITIALIZER_CONST: { @@ -4377,8 +4257,13 @@ static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi, } if (!is_constant_initializer(initializer)) { + bool old_initializer_use_bitfield_basetype + = initializer_use_bitfield_basetype; + initializer_use_bitfield_basetype = true; ir_initializer_t *irinitializer = create_ir_initializer(initializer, type); + initializer_use_bitfield_basetype + = old_initializer_use_bitfield_basetype; create_dynamic_initializer(irinitializer, dbgi, entity); return; @@ -4421,7 +4306,6 @@ static void create_initializer_local_variable_entity(entity_t *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); } @@ -4507,7 +4391,7 @@ static void allocate_variable_length_array(entity_t *entity) 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); @@ -4560,13 +4444,11 @@ static void create_local_static_variable(entity_t *entity) 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")]; @@ -4715,7 +4597,11 @@ static void create_local_declaration(entity_t *entity) switch ((storage_class_tag_t) entity->declaration.storage_class) { case STORAGE_CLASS_STATIC: - create_local_static_variable(entity); + if (entity->kind == ENTITY_FUNCTION) { + (void)get_function_entity(entity, NULL); + } else { + create_local_static_variable(entity); + } return; case STORAGE_CLASS_EXTERN: if (entity->kind == ENTITY_FUNCTION) { @@ -4753,6 +4639,11 @@ static void initialize_local_declaration(entity_t *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: @@ -4790,6 +4681,9 @@ static void declaration_statement_to_firm(declaration_statement_t *statement) if (is_declaration(entity)) { initialize_local_declaration(entity); } else if (entity->kind == ENTITY_TYPEDEF) { + /* §6.7.7:3 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); @@ -4896,7 +4790,7 @@ static void while_statement_to_firm(while_statement_t *statement) /* 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); @@ -5093,10 +4987,15 @@ static ir_node *get_break_label(void) static void switch_statement_to_firm(switch_statement_t *statement) { - dbg_info *dbgi = get_dbg_info(&statement->base.source_position); + ir_node *first_block = NULL; + dbg_info *dbgi = get_dbg_info(&statement->base.source_position); + ir_node *cond = NULL; - ir_node *expression = expression_to_firm(statement->expression); - ir_node *cond = new_d_Cond(dbgi, expression); + if (get_cur_block() != NULL) { + ir_node *expression = expression_to_firm(statement->expression); + cond = new_d_Cond(dbgi, expression); + first_block = get_cur_block(); + } set_cur_block(NULL); @@ -5124,7 +5023,7 @@ static void switch_statement_to_firm(switch_statement_t *statement) } 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. */ @@ -5146,8 +5045,8 @@ static void switch_statement_to_firm(switch_statement_t *statement) } } /* 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; @@ -5171,8 +5070,8 @@ static void switch_statement_to_firm(switch_statement_t *statement) add_immBlock_pred(get_break_label(), jmp); } - if (!saw_default_label) { - set_cur_block(get_nodes_block(cond)); + if (!saw_default_label && first_block != NULL) { + set_cur_block(first_block); ir_node *const proj = new_d_defaultProj(dbgi, cond, statement->default_proj_nr); add_immBlock_pred(get_break_label(), proj); @@ -5200,24 +5099,26 @@ static void case_label_to_firm(const case_label_statement_t *statement) ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp()); ir_node *proj; - ir_node *block = new_immBlock(); - - set_cur_block(get_nodes_block(current_switch_cond)); - if (statement->expression != NULL) { - long pn = statement->first_case; - long end_pn = statement->last_case; - assert(pn <= end_pn); - /* create jumps for all cases in the given range */ - do { - proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn); - add_immBlock_pred(block, proj); - } while(pn++ < end_pn); - } else { - saw_default_label = true; - proj = new_d_defaultProj(dbgi, current_switch_cond, - current_switch->default_proj_nr); + ir_node *block = new_immBlock(); - add_immBlock_pred(block, proj); + if (current_switch_cond != NULL) { + set_cur_block(get_nodes_block(current_switch_cond)); + if (statement->expression != NULL) { + long pn = statement->first_case; + long end_pn = statement->last_case; + assert(pn <= end_pn); + /* create jumps for all cases in the given range */ + do { + proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn); + add_immBlock_pred(block, proj); + } while (pn++ < end_pn); + } else { + saw_default_label = true; + proj = new_d_defaultProj(dbgi, current_switch_cond, + current_switch->default_proj_nr); + + add_immBlock_pred(block, proj); + } } if (fallthrough != NULL) { @@ -5356,7 +5257,7 @@ static void asm_statement_to_firm(const asm_statement_t *statement) char buf[64]; ir_node *value = get_value_from_lvalue(expr, addr); - snprintf(buf, sizeof(buf), "%u", pos); + snprintf(buf, sizeof(buf), "%u", (unsigned) out_size); ir_asm_constraint constraint; constraint.pos = pos; @@ -5670,7 +5571,7 @@ static void initialize_function_parameters(entity_t *entity) 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); + entity->function.static_link = new_r_Proj(start_block, args, mode_P_data, 0); ++first_param_nr; } @@ -5704,7 +5605,7 @@ static void initialize_function_parameters(entity_t *entity) ir_mode *param_mode = get_type_mode(param_irtype); long pn = n + first_param_nr; - ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn); + ir_node *value = new_r_Proj(start_block, args, param_mode, pn); ir_mode *mode = get_ir_mode_storage(type); value = create_conv(NULL, value, mode); @@ -5726,7 +5627,8 @@ static void initialize_function_parameters(entity_t *entity) * @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)) */ @@ -5801,6 +5703,10 @@ static void create_function(entity_t *entity) if (entity->function.statement == NULL) return; + if (is_main(entity) && firm_opt.os_support == OS_SUPPORT_MINGW) { + prepare_main_collect2(entity); + } + inner_functions = NULL; current_trampolines = NULL; @@ -5971,6 +5877,8 @@ static void scope_to_firm(scope_t *scope) (void)get_function_entity(entity, NULL); } else if (entity->kind == ENTITY_VARIABLE) { create_global_variable(entity); + } else if (entity->kind == ENTITY_NAMESPACE) { + scope_to_firm(&entity->namespacee.members); } }