X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ast2firm.c;h=510d29370cc0db67ded7b028fedfd2e876a19e8a;hb=bb8544d38aaa4c716603a5d565c3ff3840454ffc;hp=6131c7eb83705d9ce7cc312c776286bb31885f2e;hpb=431b8534737f57aedaa9aa747cba2fd33391283f;p=cparser diff --git a/ast2firm.c b/ast2firm.c index 6131c7e..559b1c2 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 @@ -32,6 +32,7 @@ #include "adt/error.h" #include "adt/array.h" +#include "adt/util.h" #include "symbol_t.h" #include "token_t.h" #include "type_t.h" @@ -45,15 +46,32 @@ #include "mangle.h" #include "walk_statements.h" #include "warning.h" +#include "printer.h" #include "entitymap_t.h" #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 */ +}; + +fp_model_t firm_fp_model = fp_model_precise; + +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 ir_type *ir_type_int; +/* architecture specific floating point arithmetic mode (if any) */ +static ir_mode *mode_float_arithmetic; + +/* alignment of stack parameters */ +static unsigned stack_param_align; + static int next_value_number_function; static ir_node *continue_label; static ir_node *break_label; @@ -63,8 +81,7 @@ static label_t **all_labels; static entity_t **inner_functions; static ir_node *ijmp_list; static bool constant_folding; - -extern bool have_const_functions; +static bool initializer_use_bitfield_basetype; static const entity_t *current_function_entity; static ir_node *current_function_name; @@ -72,6 +89,10 @@ static ir_node *current_funcsig; 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; @@ -90,55 +111,35 @@ typedef enum declaration_kind_t { DECLARATION_KIND_INNER_FUNCTION } declaration_kind_t; -static ir_mode *get_ir_mode(type_t *type); +static ir_mode *get_ir_mode_storage(type_t *type); + static ir_type *get_ir_type_incomplete(type_t *type); 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) +static ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos) { const entity_t *entity = get_irg_loc_description(irg, pos); if (entity != NULL) { - warningf(&entity->base.source_position, - "%s '%#T' might be used uninitialized", - get_entity_kind_name(entity->kind), - entity->declaration.type, entity->base.symbol); + source_position_t const *const pos = &entity->base.source_position; + warningf(WARN_UNINITIALIZED, pos, "'%N' might be used uninitialized", entity); } return new_r_Unknown(irg, mode); } -unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg) -{ - const source_position_t *pos = (const source_position_t*) dbg; - if (pos == NULL) - return 0; - return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name, - pos->linenr); -} - -const char *dbg_retrieve(const dbg_info *dbg, unsigned *line) +static const char *dbg_retrieve(const dbg_info *dbg, unsigned *line) { const source_position_t *pos = (const source_position_t*) dbg; if (pos == NULL) return NULL; if (line != NULL) - *line = pos->linenr; + *line = pos->lineno; return pos->input_name; } @@ -147,6 +148,33 @@ static dbg_info *get_dbg_info(const source_position_t *pos) return (dbg_info*) pos; } +static void dbg_print_type_dbg_info(char *buffer, size_t buffer_size, + const type_dbg_info *dbg) +{ + assert(dbg != NULL); + print_to_buffer(buffer, buffer_size); + const type_t *type = (const type_t*) dbg; + print_type(type); + finish_print_to_buffer(); +} + +static type_dbg_info *get_type_dbg_info_(const type_t *type) +{ + return (type_dbg_info*) type; +} + +/* is the current block a reachable one? */ +static bool currently_reachable(void) +{ + ir_node *const block = get_cur_block(); + return block != NULL && !is_Bad(block); +} + +static void set_unreachable_now(void) +{ + set_cur_block(NULL); +} + static ir_mode *atomic_modes[ATOMIC_TYPE_LAST+1]; static ir_mode *mode_int, *mode_uint; @@ -230,73 +258,32 @@ ir_mode *get_atomic_mode(atomic_type_kind_t kind) return atomic_modes[kind]; } -static unsigned get_compound_type_size(compound_type_t *type) -{ - ir_type *irtype = get_ir_type((type_t*) type); - return get_type_size_bytes(irtype); -} - -static unsigned get_array_type_size(array_type_t *type) -{ - assert(!type->is_vla); - ir_type *irtype = get_ir_type((type_t*) type); - return get_type_size_bytes(irtype); -} - -static unsigned get_type_size_const(type_t *type) +static ir_node *get_vla_size(array_type_t *const type) { - switch(type->kind) { - case TYPE_ERROR: - panic("error type occurred"); - case TYPE_ATOMIC: - return get_atomic_type_size(type->atomic.akind); - case TYPE_COMPLEX: - return 2 * get_atomic_type_size(type->complex.akind); - case TYPE_IMAGINARY: - return get_atomic_type_size(type->imaginary.akind); - case TYPE_ENUM: - return get_mode_size_bytes(mode_int); - case TYPE_COMPOUND_UNION: - case TYPE_COMPOUND_STRUCT: - return get_compound_type_size(&type->compound); - case TYPE_FUNCTION: - /* just a pointer to the function */ - return get_mode_size_bytes(mode_P_code); - case TYPE_POINTER: - case TYPE_REFERENCE: - return get_mode_size_bytes(mode_P_data); - case TYPE_ARRAY: - return get_array_type_size(&type->array); - case TYPE_BUILTIN: - return get_type_size_const(type->builtin.real_type); - case TYPE_BITFIELD: - panic("type size of bitfield request"); - case TYPE_TYPEDEF: - case TYPE_TYPEOF: - case TYPE_INVALID: - break; + ir_node *size_node = type->size_node; + if (size_node == NULL) { + size_node = expression_to_firm(type->size_expression); + type->size_node = size_node; } - panic("Trying to determine size of invalid type"); + return size_node; } -static ir_node *get_type_size(type_t *type) +/** + * Return a node representing the size of a 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 = type->array.size_node; - if (size_node == NULL) { - size_node = expression_to_firm(type->array.size_expression); - type->array.size_node = size_node; - } - - ir_node *elem_size = get_type_size(type->array.element_type); + ir_node *size_node = get_vla_size(&type->array); + 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; } - ir_mode *mode = get_ir_mode(type_size_t); + ir_mode *mode = get_ir_mode_storage(type_size_t); symconst_symbol sym; sym.type_p = get_ir_type(type); return new_SymConst(mode, sym, symconst_type_size); @@ -317,14 +304,14 @@ static unsigned count_parameters(const function_type_t *function_type) /** * Creates a Firm type for an atomic type */ -static ir_type *create_atomic_type(const atomic_type_t *type) +static ir_type *create_atomic_type(atomic_type_kind_t akind, const 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); + ir_mode *mode = atomic_modes[akind]; + type_dbg_info *dbgi = get_type_dbg_info_(type); + ir_type *irtype = new_d_type_primitive(mode, dbgi); + il_alignment_t alignment = get_atomic_type_alignment(akind); - set_type_alignment_bytes(irtype, type->base.alignment); + set_type_alignment_bytes(irtype, alignment); return irtype; } @@ -347,26 +334,20 @@ 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); - - set_type_alignment_bytes(irtype, type->base.alignment); - - return irtype; + return create_atomic_type(type->akind, (const 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; } @@ -374,14 +355,15 @@ static type_t *get_parameter_type(type_t *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); + 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_results = return_type == type_void ? 0 : 1; - ir_type *irtype = new_type_method(id, n_parameters, n_results); + int n_parameters = count_parameters(function_type) + + (for_closure ? 1 : 0); + int n_results = return_type == type_void ? 0 : 1; + type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) function_type); + ir_type *irtype = new_d_type_method(n_parameters, n_results, dbgi); if (return_type != type_void) { ir_type *restype = get_ir_type(return_type); @@ -390,6 +372,11 @@ static ir_type *create_method_type(const function_type_t *function_type) 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); @@ -397,9 +384,10 @@ static ir_type *create_method_type(const function_type_t *function_type) ++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) { @@ -410,7 +398,7 @@ 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 */ @@ -418,7 +406,7 @@ 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)); @@ -429,56 +417,58 @@ is_cdecl: break; } + if (for_closure) + set_method_calling_convention(irtype, get_method_calling_convention(irtype) | cc_this_call); + return irtype; } static ir_type *create_pointer_type(pointer_type_t *type) { - type_t *points_to = type->points_to; - ir_type *ir_points_to = get_ir_type_incomplete(points_to); - ir_type *ir_type = new_type_pointer(id_unique("pointer.%u"), - ir_points_to, mode_P_data); + type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) type); + type_t *points_to = type->points_to; + ir_type *ir_points_to = get_ir_type_incomplete(points_to); + ir_type *irtype = new_d_type_pointer(ir_points_to, dbgi); - return ir_type; + return irtype; } static ir_type *create_reference_type(reference_type_t *type) { - type_t *refers_to = type->refers_to; - ir_type *ir_refers_to = get_ir_type_incomplete(refers_to); - ir_type *ir_type = new_type_pointer(id_unique("reference.%u"), - ir_refers_to, mode_P_data); + type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) type); + type_t *refers_to = type->refers_to; + ir_type *ir_refers_to = get_ir_type_incomplete(refers_to); + ir_type *irtype = new_d_type_pointer(ir_refers_to, dbgi); - return ir_type; + return irtype; } static ir_type *create_array_type(array_type_t *type) { - type_t *element_type = type->element_type; - ir_type *ir_element_type = get_ir_type(element_type); - - ident *id = id_unique("array.%u"); - ir_type *ir_type = new_type_array(id, 1, ir_element_type); + type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) type); + type_t *element_type = type->element_type; + ir_type *ir_element_type = get_ir_type(element_type); + ir_type *irtype = new_d_type_array(1, ir_element_type, dbgi); const int align = get_type_alignment_bytes(ir_element_type); - set_type_alignment_bytes(ir_type, align); + set_type_alignment_bytes(irtype, align); if (type->size_constant) { int n_elements = type->size; - set_array_bounds_int(ir_type, 0, 0, n_elements); + set_array_bounds_int(irtype, 0, 0, n_elements); size_t elemsize = get_type_size_bytes(ir_element_type); if (elemsize % align > 0) { elemsize += align - (elemsize % align); } - set_type_size_bytes(ir_type, n_elements * elemsize); + set_type_size_bytes(irtype, n_elements * elemsize); } else { - set_array_lower_bound_int(ir_type, 0, 0); + set_array_lower_bound_int(irtype, 0, 0); } - set_type_state(ir_type, layout_fixed); + set_type_state(irtype, layout_fixed); - return ir_type; + return irtype; } /** @@ -487,7 +477,8 @@ static ir_type *create_array_type(array_type_t *type) * @param size the size */ static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp, - unsigned size) + unsigned size, + const type_t *type) { static ir_mode *s_modes[64 + 1] = {NULL, }; ir_type *res; @@ -506,11 +497,8 @@ static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp, s_modes[size] = mode; } - char name[32]; - snprintf(name, sizeof(name), "I%u", size); - ident *id = new_id_from_str(name); - dbg_info *dbgi = get_dbg_info(&builtin_source_position); - res = new_d_type_primitive(id_mangle_u(get_type_ident(base_tp), id), mode, dbgi); + type_dbg_info *dbgi = get_type_dbg_info_(type); + res = new_d_type_primitive(mode, dbgi); set_primitive_base_type(res, base_tp); return res; @@ -522,7 +510,8 @@ static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp, * @param size the size */ static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp, - unsigned size) + unsigned size, + const type_t *type) { static ir_mode *u_modes[64 + 1] = {NULL, }; ir_type *res; @@ -541,12 +530,8 @@ static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp, u_modes[size] = mode; } - char name[32]; - - snprintf(name, sizeof(name), "U%u", size); - ident *id = new_id_from_str(name); - dbg_info *dbgi = get_dbg_info(&builtin_source_position); - res = new_d_type_primitive(id_mangle_u(get_type_ident(base_tp), id), mode, dbgi); + type_dbg_info *dbgi = get_type_dbg_info_(type); + res = new_d_type_primitive(mode, dbgi); set_primitive_base_type(res, base_tp); return res; @@ -562,9 +547,11 @@ static ir_type *create_bitfield_type(bitfield_type_t *const type) assert(!is_type_float(base)); if (is_type_signed(base)) { - return get_signed_int_type_for_bit_size(irbase, size); + return get_signed_int_type_for_bit_size(irbase, size, + (const type_t*) type); } else { - return get_unsigned_int_type_for_bit_size(irbase, size); + return get_unsigned_int_type_for_bit_size(irbase, size, + (const type_t*) type); } } @@ -577,13 +564,8 @@ 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; @@ -592,41 +574,37 @@ 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 *type_symbol = compound->base.symbol; + ident *id; + if (type_symbol != NULL) { + id = new_id_from_str(type_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"); } + } - compound->irtype_complete = false; - compound->irtype = irtype; + ir_type *irtype; + if (is_union) { + irtype = new_type_union(id); } else { - offset = *outer_offset; - align_all = *outer_align; + irtype = new_type_struct(id); } + 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; @@ -634,128 +612,37 @@ 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); - 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; } @@ -764,9 +651,9 @@ static ir_type *create_enum_type(enum_type_t *const type) { type->base.firm_type = ir_type_int; - ir_mode *const mode = mode_int; - tarval *const one = get_mode_one(mode); - tarval * tv_next = get_tarval_null(mode); + ir_mode *const mode = mode_int; + ir_tarval *const one = get_mode_one(mode); + ir_tarval * tv_next = get_mode_null(mode); bool constant_folding_old = constant_folding; constant_folding = true; @@ -791,7 +678,7 @@ static ir_type *create_enum_type(enum_type_t *const type) constant_folding = constant_folding_old; - return ir_type_int; + return create_atomic_type(type->akind, (const type_t*) type); } static ir_type *get_ir_type_incomplete(type_t *type) @@ -806,11 +693,9 @@ 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); } @@ -831,10 +716,10 @@ 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(&type_void->atomic); + return create_atomic_type(ATOMIC_TYPE_VOID, NULL); case TYPE_ATOMIC: - firm_type = create_atomic_type(&type->atomic); + firm_type = create_atomic_type(type->atomic.akind, type); break; case TYPE_COMPLEX: firm_type = create_complex_type(&type->complex); @@ -843,7 +728,7 @@ ir_type *get_ir_type(type_t *type) 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); @@ -855,19 +740,14 @@ 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); break; - case TYPE_BUILTIN: - firm_type = get_ir_type(type->builtin.real_type); - break; case TYPE_BITFIELD: firm_type = create_bitfield_type(&type->bitfield); break; @@ -884,7 +764,7 @@ ir_type *get_ir_type(type_t *type) return firm_type; } -ir_mode *get_ir_mode(type_t *type) +static ir_mode *get_ir_mode_storage(type_t *type) { ir_type *irtype = get_ir_type(type); @@ -898,6 +778,21 @@ ir_mode *get_ir_mode(type_t *type) return mode; } +/* + * get arithmetic mode for a type. This is different from get_ir_mode_storage, + * int that it returns bigger modes for floating point on some platforms + * (x87 internally does arithemtic with 80bits) + */ +static ir_mode *get_ir_mode_arithmetic(type_t *type) +{ + ir_mode *mode = get_ir_mode_storage(type); + if (mode_is_float(mode) && mode_float_arithmetic != NULL) { + return mode_float_arithmetic; + } + + return mode; +} + /** Names of the runtime functions. */ static const struct { int id; /**< the rts id */ @@ -974,15 +869,25 @@ static const struct { { rts_coshl, 1, "coshl", 1, _C99 }, { rts_tanhl, 1, "tanhl", 1, _C99 }, - { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */ - { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */ { rts_strcmp, 1, "strcmp", 2, _C89 }, - { rts_strncmp, 1, "strncmp", 3, _C89 } + { rts_strncmp, 1, "strncmp", 3, _C89 }, + { rts_strcpy, 1, "strcpy", 2, _C89 }, + { rts_strlen, 1, "strlen", 1, _C89 }, + { rts_memcpy, 1, "memcpy", 3, _C89 }, + { rts_mempcpy, 1, "mempcpy", 3, _GNUC }, + { rts_memmove, 1, "memmove", 3, _C89 }, + { rts_memset, 1, "memset", 3, _C89 }, + { rts_memcmp, 1, "memcmp", 3, _C89 }, }; -static ident *rts_idents[sizeof(rts_data) / sizeof(rts_data[0])]; +static ident *rts_idents[lengthof(rts_data)]; -static ident* (*create_ld_ident)(entity_t*) = create_name_linux_elf; +static create_ld_ident_func create_ld_ident = create_name_linux_elf; + +void set_create_ld_ident(ident *(*func)(entity_t*)) +{ + create_ld_ident = func; +} /** * Handle GNU attributes for entities @@ -990,23 +895,24 @@ 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; - if (modifiers & DM_PURE) { - /* TRUE if the declaration includes the GNU - __attribute__((pure)) specifier. */ - set_entity_additional_property(irentity, mtp_property_pure); - } - if (modifiers & DM_CONST) { - set_entity_additional_property(irentity, mtp_property_const); - have_const_functions = true; + + if (is_method_entity(irentity)) { + if (modifiers & DM_PURE) { + set_entity_additional_properties(irentity, mtp_property_pure); + } + if (modifiers & DM_CONST) { + add_entity_additional_properties(irentity, mtp_property_const); + } } if (modifiers & DM_USED) { - /* TRUE if the declaration includes the GNU - __attribute__((used)) specifier. */ - set_entity_stickyness(irentity, stickyness_sticky); + add_entity_linkage(irentity, IR_LINKAGE_HIDDEN_USER); + } + if (modifiers & DM_WEAK) { + add_entity_linkage(irentity, IR_LINKAGE_WEAK); } } @@ -1029,13 +935,22 @@ static bool is_main(entity_t *entity) /** * Creates an entity representing a function. * - * @param declaration the function declaration + * @param entity the function declaration/definition + * @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) { - return entity->function.entity; + if (entity->function.irentity != NULL) { + return entity->function.irentity; + } + + entity_t *original_entity = entity; + if (entity->function.btk != bk_none) { + entity = get_builtin_replacement(entity); + if (entity == NULL) + return NULL; } if (is_main(entity)) { @@ -1045,69 +960,97 @@ static ir_entity *get_function_entity(entity_t *entity) if (type->function.linkage != LINKAGE_C) { type_t *new_type = duplicate_type(type); new_type->function.linkage = LINKAGE_C; - - type = typehash_insert(new_type); - if (type != new_type) { - obstack_free(type_obst, new_type); - } - entity->declaration.type = type; + type = identify_new_type(new_type); + entity->declaration.type = type; } } 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 + if (get_entity_visibility(irentity) == ir_visibility_external && has_body) { - set_entity_visibility(irentity, visibility_external_visible); + set_entity_visibility(irentity, ir_visibility_default); } 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, ir_visibility_default); + } else if (storage_class == STORAGE_CLASS_STATIC || + (is_inline && has_body)) { + set_entity_visibility(irentity, ir_visibility_local); + } else if (has_body) { + set_entity_visibility(irentity, ir_visibility_default); + } else { + set_entity_visibility(irentity, ir_visibility_external); } - 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, ir_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 (!freestanding && !has_body) { /* check for a known runtime function */ - for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) { + for (size_t i = 0; i < lengthof(rts_data); ++i) { if (id != rts_idents[i]) continue; + function_type_t *function_type + = &entity->declaration.type->function; + /* rts_entities code can't handle a "wrong" number of parameters */ + if (function_type->unspecified_parameters) + continue; + + /* check number of parameters */ + int n_params = count_parameters(function_type); + if (n_params != rts_data[i].n_params) + continue; + + type_t *return_type = skip_typeref(function_type->return_type); + int n_res = return_type != type_void ? 1 : 0; + if (n_res != rts_data[i].n_res) + continue; + /* ignore those rts functions not necessary needed for current mode */ if ((c_mode & rts_data[i].flags) == 0) continue; @@ -1119,92 +1062,86 @@ static ir_entity *get_function_entity(entity_t *entity) entitymap_insert(&entitymap, symbol, irentity); entity_created: - entity->declaration.kind = DECLARATION_KIND_FUNCTION; - entity->function.entity = irentity; + original_entity->declaration.kind = DECLARATION_KIND_FUNCTION; + original_entity->function.irentity = irentity; return irentity; } /** - * Creates a Const node representing a constant. + * Creates a SymConst for a given entity. + * + * @param dbgi debug info + * @param entity the entity */ -static ir_node *const_to_firm(const const_expression_t *cnst) +static ir_node *create_symconst(dbg_info *dbgi, ir_entity *entity) { - dbg_info *dbgi = get_dbg_info(&cnst->base.source_position); - ir_mode *mode = get_ir_mode(cnst->base.type); - - char buf[128]; - tarval *tv; - size_t len; - if (mode_is_float(mode)) { - tv = new_tarval_from_double(cnst->v.float_value, mode); - } else { - if (mode_is_signed(mode)) { - len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value); - } else { - len = snprintf(buf, sizeof(buf), "%llu", - (unsigned long long) cnst->v.int_value); - } - tv = new_tarval_from_str(buf, len, mode); - } - - return new_d_Const(dbgi, tv); + assert(entity != NULL); + union symconst_symbol sym; + sym.entity_p = entity; + return new_d_SymConst(dbgi, mode_P, sym, symconst_addr_ent); } -/** - * Creates a Const node representing a character constant. - */ -static ir_node *character_constant_to_firm(const const_expression_t *cnst) +static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode) { - dbg_info *dbgi = get_dbg_info(&cnst->base.source_position); - ir_mode *mode = get_ir_mode(cnst->base.type); + ir_mode *value_mode = get_irn_mode(value); - long long int v = 0; - for (size_t i = 0; i < cnst->v.character.size; ++i) { - if (char_is_signed) { - v = (v << 8) | ((signed char)cnst->v.character.begin[i]); - } else { - v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]); - } + if (value_mode == dest_mode) + return value; + + if (dest_mode == mode_b) { + ir_node *zero = new_Const(get_mode_null(value_mode)); + ir_node *cmp = new_d_Cmp(dbgi, value, zero, ir_relation_less_greater); + return cmp; } - char buf[128]; - size_t len = snprintf(buf, sizeof(buf), "%lld", v); - tarval *tv = new_tarval_from_str(buf, len, mode); - return new_d_Const(dbgi, tv); + return new_d_Conv(dbgi, value, dest_mode); } -/** - * Creates a Const node representing a wide character constant. - */ -static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst) +static ir_node *create_Const_from_bool(ir_mode *const mode, bool const v) { - dbg_info *dbgi = get_dbg_info(&cnst->base.source_position); - ir_mode *mode = get_ir_mode(cnst->base.type); - - long long int v = cnst->v.wide_character.begin[0]; - - char buf[128]; - size_t len = snprintf(buf, sizeof(buf), "%lld", v); - tarval *tv = new_tarval_from_str(buf, len, mode); - - return new_d_Const(dbgi, tv); + return new_Const((v ? get_mode_one : get_mode_null)(mode)); } /** - * Creates a SymConst for a given entity. + * Creates a SymConst node representing a wide string literal. * - * @param dbgi debug info - * @param mode the (reference) mode for the SymConst - * @param entity the entity + * @param literal the wide string literal */ -static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode, - ir_entity *entity) +static ir_node *wide_string_literal_to_firm( + const string_literal_expression_t *literal) { - assert(entity != NULL); - union symconst_symbol sym; - sym.entity_p = entity; - return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent); + ir_type *const global_type = get_glob_type(); + ir_type *const elem_type = ir_type_wchar_t; + dbg_info *const dbgi = get_dbg_info(&literal->base.source_position); + ir_type *const type = new_type_array(1, elem_type); + + ident *const id = id_unique("str.%u"); + ir_entity *const entity = new_d_entity(global_type, id, type, dbgi); + set_entity_ld_ident(entity, id); + set_entity_visibility(entity, ir_visibility_private); + add_entity_linkage(entity, IR_LINKAGE_CONSTANT); + + ir_mode *const mode = get_type_mode(elem_type); + const size_t slen = wstrlen(&literal->value); + + set_array_lower_bound_int(type, 0, 0); + set_array_upper_bound_int(type, 0, slen); + set_type_size_bytes(type, slen * get_mode_size_bytes(mode)); + set_type_state(type, layout_fixed); + + ir_initializer_t *initializer = create_initializer_compound(slen); + const char *p = literal->value.begin; + for (size_t i = 0; i < slen; ++i) { + assert(p < literal->value.begin + literal->value.size); + utf32 v = read_utf8_char(&p); + ir_tarval *tv = new_tarval_from_long(v, mode); + ir_initializer_t *val = create_initializer_tarval(tv); + set_initializer_compound_value(initializer, i, val); + } + set_entity_initializer(entity, initializer); + + return create_symconst(dbgi, entity); } /** @@ -1220,14 +1157,13 @@ static ir_node *string_to_firm(const source_position_t *const src_pos, { ir_type *const global_type = get_glob_type(); dbg_info *const dbgi = get_dbg_info(src_pos); - ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1, - ir_type_const_char, dbgi); + ir_type *const type = new_type_array(1, ir_type_const_char); ident *const id = id_unique(id_prefix); ir_entity *const entity = new_d_entity(global_type, id, type, dbgi); set_entity_ld_ident(entity, id); - set_entity_variability(entity, variability_constant); - set_entity_allocation(entity, allocation_static); + set_entity_visibility(entity, ir_visibility_private); + add_entity_linkage(entity, IR_LINKAGE_CONSTANT); ir_type *const elem_type = ir_type_const_char; ir_mode *const mode = get_type_mode(elem_type); @@ -1240,70 +1176,269 @@ static ir_node *string_to_firm(const source_position_t *const src_pos, set_type_size_bytes(type, slen); set_type_state(type, layout_fixed); - tarval **const tvs = xmalloc(slen * sizeof(tvs[0])); + ir_initializer_t *initializer = create_initializer_compound(slen); for (size_t i = 0; i < slen; ++i) { - tvs[i] = new_tarval_from_long(string[i], mode); + ir_tarval *tv = new_tarval_from_long(string[i], mode); + ir_initializer_t *val = create_initializer_tarval(tv); + set_initializer_compound_value(initializer, i, val); } + set_entity_initializer(entity, initializer); + + return create_symconst(dbgi, entity); +} + +static bool try_create_integer(literal_expression_t *literal, + type_t *type, unsigned char base) +{ + const char *string = literal->value.begin; + size_t size = literal->value.size; - set_array_entity_values(entity, tvs, slen); - free(tvs); + assert(type->kind == TYPE_ATOMIC); + atomic_type_kind_t akind = type->atomic.akind; - return create_symconst(dbgi, mode_P_data, entity); + ir_mode *mode = atomic_modes[akind]; + ir_tarval *tv = new_integer_tarval_from_str(string, size, 1, base, mode); + if (tv == tarval_bad) + return false; + + literal->base.type = type; + literal->target_value = tv; + return true; +} + +static void create_integer_tarval(literal_expression_t *literal) +{ + unsigned us = 0; + unsigned ls = 0; + symbol_t *suffix = literal->suffix; + /* parse suffix */ + if (suffix != NULL) { + for (const char *c = suffix->string; *c != '\0'; ++c) { + if (*c == 'u' || *c == 'U') { ++us; } + if (*c == 'l' || *c == 'L') { ++ls; } + } + } + + unsigned base; + switch (literal->base.kind) { + case EXPR_LITERAL_INTEGER_OCTAL: base = 8; break; + case EXPR_LITERAL_INTEGER: base = 10; break; + case EXPR_LITERAL_INTEGER_HEXADECIMAL: base = 16; break; + default: panic("invalid literal kind"); + } + + tarval_int_overflow_mode_t old_mode = tarval_get_integer_overflow_mode(); + + /* now try if the constant is small enough for some types */ + tarval_set_integer_overflow_mode(TV_OVERFLOW_BAD); + if (ls < 1) { + if (us == 0 && try_create_integer(literal, type_int, base)) + goto finished; + if ((us == 1 || base != 10) + && try_create_integer(literal, type_unsigned_int, base)) + goto finished; + } + if (ls < 2) { + if (us == 0 && try_create_integer(literal, type_long, base)) + goto finished; + if ((us == 1 || base != 10) + && try_create_integer(literal, type_unsigned_long, base)) + goto finished; + } + /* last try? then we should not report tarval_bad */ + if (us != 1 && base == 10) + tarval_set_integer_overflow_mode(TV_OVERFLOW_WRAP); + if (us == 0 && try_create_integer(literal, type_long_long, base)) + goto finished; + + /* last try */ + assert(us == 1 || base != 10); + tarval_set_integer_overflow_mode(TV_OVERFLOW_WRAP); + bool res = try_create_integer(literal, type_unsigned_long_long, base); + if (!res) + panic("internal error when parsing number literal"); + +finished: + tarval_set_integer_overflow_mode(old_mode); +} + +void determine_literal_type(literal_expression_t *literal) +{ + switch (literal->base.kind) { + case EXPR_LITERAL_INTEGER: + case EXPR_LITERAL_INTEGER_OCTAL: + case EXPR_LITERAL_INTEGER_HEXADECIMAL: + create_integer_tarval(literal); + return; + default: + break; + } } /** - * Creates a SymConst node representing a string literal. - * - * @param literal the string literal + * Creates a Const node representing a constant. */ -static ir_node *string_literal_to_firm( - const string_literal_expression_t* literal) +static ir_node *literal_to_firm(const literal_expression_t *literal) { - return string_to_firm(&literal->base.source_position, "Lstr.%u", - &literal->value); + type_t *type = skip_typeref(literal->base.type); + ir_mode *mode = get_ir_mode_storage(type); + const char *string = literal->value.begin; + size_t size = literal->value.size; + ir_tarval *tv; + + switch (literal->base.kind) { + case EXPR_LITERAL_WIDE_CHARACTER: { + utf32 v = read_utf8_char(&string); + char buf[128]; + size_t len = snprintf(buf, sizeof(buf), UTF32_PRINTF_FORMAT, v); + + tv = new_tarval_from_str(buf, len, mode); + goto make_const; + } + case EXPR_LITERAL_CHARACTER: { + long long int v; + if (size == 1 && char_is_signed) { + v = (signed char)string[0]; + } else { + v = 0; + for (size_t i = 0; i < size; ++i) { + v = (v << 8) | ((unsigned char)string[i]); + } + } + char buf[128]; + size_t len = snprintf(buf, sizeof(buf), "%lld", v); + + tv = new_tarval_from_str(buf, len, mode); + goto make_const; + } + case EXPR_LITERAL_INTEGER: + case EXPR_LITERAL_INTEGER_OCTAL: + case EXPR_LITERAL_INTEGER_HEXADECIMAL: + assert(literal->target_value != NULL); + tv = literal->target_value; + goto make_const; + case EXPR_LITERAL_FLOATINGPOINT: + tv = new_tarval_from_str(string, size, mode); + goto make_const; + case EXPR_LITERAL_FLOATINGPOINT_HEXADECIMAL: { + char buffer[size + 2]; + memcpy(buffer, "0x", 2); + memcpy(buffer+2, string, size); + tv = new_tarval_from_str(buffer, size+2, mode); + goto make_const; + } + case EXPR_LITERAL_BOOLEAN: + if (string[0] == 't') { + tv = get_mode_one(mode); + } else { + assert(string[0] == 'f'); + tv = get_mode_null(mode); + } + goto make_const; + case EXPR_LITERAL_MS_NOOP: + tv = get_mode_null(mode); + goto make_const; + default: + break; + } + panic("Invalid literal kind found"); + +make_const: ; + dbg_info *dbgi = get_dbg_info(&literal->base.source_position); + ir_node *res = new_d_Const(dbgi, tv); + ir_mode *mode_arith = get_ir_mode_arithmetic(type); + return create_conv(dbgi, res, mode_arith); } -/** - * Creates a SymConst node representing a wide string literal. - * - * @param literal the wide string literal +/* + * Allocate an area of size bytes aligned at alignment + * at a frame type. */ -static ir_node *wide_string_literal_to_firm( - const wide_string_literal_expression_t* const literal) +static ir_entity *alloc_trampoline(ir_type *frame_type, int size, unsigned alignment) { - ir_type *const global_type = get_glob_type(); - ir_type *const elem_type = ir_type_wchar_t; - dbg_info *const dbgi = get_dbg_info(&literal->base.source_position); - ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1, - elem_type, dbgi); + static unsigned area_cnt = 0; + char buf[32]; - ident *const id = id_unique("Lstr.%u"); - ir_entity *const entity = new_d_entity(global_type, id, type, dbgi); - set_entity_ld_ident(entity, id); - set_entity_variability(entity, variability_constant); - set_entity_allocation(entity, allocation_static); + ir_type *tp = new_type_array(1, ir_type_char); + set_array_bounds_int(tp, 0, 0, size); + set_type_alignment_bytes(tp, alignment); - ir_mode *const mode = get_type_mode(elem_type); + snprintf(buf, sizeof(buf), "trampolin%u", area_cnt++); + ident *name = new_id_from_str(buf); + ir_entity *area = new_entity(frame_type, name, tp); - const wchar_rep_t *const string = literal->value.begin; - const size_t slen = literal->value.size; + /* mark this entity as compiler generated */ + set_entity_compiler_generated(area, 1); + return area; +} - set_array_lower_bound_int(type, 0, 0); - set_array_upper_bound_int(type, 0, slen); - set_type_size_bytes(type, slen); - set_type_state(type, layout_fixed); +/** + * Return a node representing a trampoline region + * for a given function entity. + * + * @param dbgi debug info + * @param entity the function entity + */ +static ir_node *get_trampoline_region(dbg_info *dbgi, ir_entity *entity) +{ + ir_entity *region = NULL; + int i; - tarval **const tvs = xmalloc(slen * sizeof(tvs[0])); - for (size_t i = 0; i < slen; ++i) { - tvs[i] = new_tarval_from_long(string[i], mode); + 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; - set_array_entity_values(entity, tvs, slen); - free(tvs); + 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 trampoline for a function represented by an entity. + * + * @param dbgi debug info + * @param mode the (reference) mode for the function address + * @param entity the function 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, entity); + in[2] = get_irg_frame(current_ir_graph); - return create_symconst(dbgi, mode_P_data, entity); + 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); } +/** + * 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) { @@ -1314,22 +1449,25 @@ static ir_node *deref_address(dbg_info *const dbgi, type_t *const type, return addr; } + ir_cons_flags flags = type->base.qualifiers & TYPE_QUALIFIER_VOLATILE + ? cons_volatile : cons_none; ir_mode *const mode = get_type_mode(irtype); ir_node *const memory = get_store(); - ir_node *const load = new_d_Load(dbgi, memory, addr, mode); + ir_node *const load = new_d_Load(dbgi, memory, addr, mode, flags); ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M); ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res); - if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE && !is_Bad(load)) { - set_Load_volatility(load, volatility_is_volatile); - } - set_store(load_mem); - return load_res; + + ir_mode *const mode_arithmetic = get_ir_mode_arithmetic(type); + return create_conv(dbgi, load_res, mode_arithmetic); } /** - * Creates a strict Conv if neccessary. + * 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) { @@ -1351,22 +1489,6 @@ static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node) return new_d_strictConv(dbgi, node, mode); } -static ir_node *get_global_var_address(dbg_info *const dbgi, - const entity_t *const entity) -{ - 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_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); - } else { - return create_symconst(dbgi, mode_P_data, irentity); - } -} - /** * Returns the correct base address depending on whether it is a parameter or a * normal local variable. @@ -1374,36 +1496,20 @@ static ir_node *get_global_var_address(dbg_info *const dbgi, static ir_node *get_local_frame(ir_entity *const ent) { 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); - } else { - assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg)))); - return get_irg_value_param_base(irg); - } -} - -static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode) -{ - ir_mode *value_mode = get_irn_mode(value); - - if (value_mode == dest_mode || is_Bad(value)) - return value; - - if (dest_mode == mode_b) { - ir_node *zero = new_Const(get_mode_null(value_mode)); - ir_node *cmp = new_d_Cmp(dbgi, value, zero); - ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg); - return proj; + const ir_type *const owner = get_entity_owner(ent); + if (owner == current_outer_frame || owner == current_outer_value_type) { + assert(current_static_link != NULL); + return current_static_link; + } else { + return get_irg_frame(irg); } - - return new_d_Conv(dbgi, value, dest_mode); } /** * Keep all memory edges of the given block. */ -static void keep_all_memory(ir_node *block) { +static void keep_all_memory(ir_node *block) +{ ir_node *old = get_cur_block(); set_cur_block(block); @@ -1433,36 +1539,54 @@ static ir_node *reference_expression_to_firm(const reference_expression_t *ref) /* make sure the type is constructed */ (void) get_ir_type(type); + if (entity->kind == ENTITY_FUNCTION && entity->function.btk != bk_none) { + ir_entity *irentity = get_function_entity(entity, NULL); + /* for gcc compatibility we have to produce (dummy) addresses for some + * builtins which don't have entities */ + if (irentity == NULL) { + source_position_t const *const pos = &ref->base.source_position; + symbol_t const *const sym = ref->entity->base.symbol; + warningf(WARN_OTHER, pos, "taking address of builtin '%Y'", sym); + + /* simply create a NULL pointer */ + ir_mode *mode = get_ir_mode_arithmetic(type_void_ptr); + ir_node *res = new_Const(get_mode_null(mode)); + + return res; + } + } + switch ((declaration_kind_t) entity->declaration.kind) { case DECLARATION_KIND_UNKNOWN: break; case DECLARATION_KIND_LOCAL_VARIABLE: { - ir_mode *const mode = get_ir_mode(type); - return get_value(entity->variable.v.value_number, mode); + ir_mode *const mode = get_ir_mode_storage(type); + ir_node *const value = get_value(entity->variable.v.value_number, mode); + return create_conv(NULL, value, get_ir_mode_arithmetic(type)); } case DECLARATION_KIND_PARAMETER: { - ir_mode *const mode = get_ir_mode(type); - return get_value(entity->parameter.v.value_number, mode); + ir_mode *const mode = get_ir_mode_storage(type); + ir_node *const value = get_value(entity->parameter.v.value_number,mode); + return create_conv(NULL, value, get_ir_mode_arithmetic(type)); } case DECLARATION_KIND_FUNCTION: { - ir_mode *const mode = get_ir_mode(type); - return create_symconst(dbgi, mode, entity->function.entity); + return create_symconst(dbgi, entity->function.irentity); } case DECLARATION_KIND_INNER_FUNCTION: { - ir_mode *const mode = get_ir_mode(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); + return create_symconst(dbgi, entity->function.irentity); } 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.irentity); } } 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 = create_symconst(dbgi, variable->v.entity); + return deref_address(dbgi, variable->base.type, addr); } case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: { @@ -1503,7 +1627,7 @@ static ir_node *reference_addr(const reference_expression_t *ref) * 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 = create_symconst(dbgi, entity->variable.v.entity); return addr; } case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: { @@ -1525,12 +1649,21 @@ static ir_node *reference_addr(const reference_expression_t *ref) return entity->variable.v.vla_base; case DECLARATION_KIND_FUNCTION: { + return create_symconst(dbgi, entity->function.irentity); + } + + case DECLARATION_KIND_INNER_FUNCTION: { type_t *const type = skip_typeref(entity->declaration.type); - ir_mode *const mode = get_ir_mode(type); - return create_symconst(dbgi, mode, entity->function.entity); + 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, entity->function.irentity); + } else { + /* need trampoline here */ + return create_trampoline(dbgi, mode, entity->function.irentity); + } } - case DECLARATION_KIND_INNER_FUNCTION: case DECLARATION_KIND_COMPOUND_MEMBER: panic("not implemented reference type"); } @@ -1538,6 +1671,72 @@ static ir_node *reference_addr(const reference_expression_t *ref) panic("reference to declaration with unknown type found"); } +/** + * Generate an unary builtin. + * + * @param kind the builtin kind to generate + * @param op the operand + * @param function_type the function type for the GNU builtin routine + * @param db debug info + */ +static ir_node *gen_unary_builtin(ir_builtin_kind kind, expression_t *op, type_t *function_type, dbg_info *db) +{ + ir_node *in[1]; + in[0] = expression_to_firm(op); + + 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), 1, in, kind, tp); + set_irn_pinned(irn, op_pin_state_floats); + return new_Proj(irn, get_type_mode(res), pn_Builtin_1_result); +} + +/** + * Generate a pinned unary builtin. + * + * @param kind the builtin kind to generate + * @param op the operand + * @param function_type the function type for the GNU builtin routine + * @param db debug info + */ +static ir_node *gen_unary_builtin_pinned(ir_builtin_kind kind, expression_t *op, + type_t *function_type, dbg_info *db) +{ + ir_node *in[1]; + in[0] = expression_to_firm(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, 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); +} + +/** + * Generate an binary-void-return builtin. + * + * @param kind the builtin kind to generate + * @param op1 the first operand + * @param op2 the second operand + * @param function_type the function type for the GNU builtin routine + * @param db debug info + */ +static ir_node *gen_binary_builtin_mem(ir_builtin_kind kind, expression_t *op1, + expression_t *op2, type_t *function_type, + dbg_info *db) +{ + ir_node *in[2]; + in[0] = expression_to_firm(op1); + in[1] = expression_to_firm(op2); + + ir_type *tp = get_ir_type(function_type); + ir_node *mem = get_store(); + ir_node *irn = new_d_Builtin(db, mem, 2, in, kind, tp); + set_store(new_Proj(irn, mode_M, pn_Builtin_M)); + return NULL; +} + /** * Transform calls to builtin functions. */ @@ -1545,17 +1744,16 @@ static ir_node *process_builtin_call(const call_expression_t *call) { dbg_info *dbgi = get_dbg_info(&call->base.source_position); - assert(call->function->kind == EXPR_BUILTIN_SYMBOL); - builtin_symbol_expression_t *builtin = &call->function->builtin_symbol; + assert(call->function->kind == EXPR_REFERENCE); + reference_expression_t *builtin = &call->function->reference; - type_t *type = skip_typeref(builtin->base.type); - assert(is_type_pointer(type)); + type_t *expr_type = skip_typeref(builtin->base.type); + assert(is_type_pointer(expr_type)); - type_t *function_type = skip_typeref(type->pointer.points_to); - symbol_t *symbol = builtin->symbol; + type_t *function_type = skip_typeref(expr_type->pointer.points_to); - switch(symbol->ID) { - case T___builtin_alloca: { + switch (builtin->entity->function.btk) { + case bk_gnu_builtin_alloca: { if (call->arguments == NULL || call->arguments->next != NULL) { panic("invalid number of parameters on __builtin_alloca"); } @@ -1572,35 +1770,168 @@ static ir_node *process_builtin_call(const call_expression_t *call) return res; } - case T___builtin_huge_val: - case T___builtin_inf: - case T___builtin_inff: - case T___builtin_infl: { - ir_mode *mode = get_ir_mode(function_type->function.return_type); - tarval *tv = get_mode_infinite(mode); - ir_node *res = new_d_Const(dbgi, tv); - return res; + case bk_gnu_builtin_huge_val: + case bk_gnu_builtin_huge_valf: + case bk_gnu_builtin_huge_vall: + case bk_gnu_builtin_inf: + case bk_gnu_builtin_inff: + case bk_gnu_builtin_infl: { + type_t *type = function_type->function.return_type; + ir_mode *mode = get_ir_mode_arithmetic(type); + ir_tarval *tv = get_mode_infinite(mode); + ir_node *res = new_d_Const(dbgi, tv); + return res; } - case T___builtin_nan: - case T___builtin_nanf: - case T___builtin_nanl: { + case bk_gnu_builtin_nan: + case bk_gnu_builtin_nanf: + case bk_gnu_builtin_nanl: { /* Ignore string for now... */ assert(is_type_function(function_type)); - ir_mode *mode = get_ir_mode(function_type->function.return_type); - tarval *tv = get_mode_NAN(mode); - ir_node *res = new_d_Const(dbgi, tv); + type_t *type = function_type->function.return_type; + ir_mode *mode = get_ir_mode_arithmetic(type); + ir_tarval *tv = get_mode_NAN(mode); + ir_node *res = new_d_Const(dbgi, tv); return res; } - case T___builtin_expect: { + case bk_gnu_builtin_expect: { expression_t *argument = call->arguments->expression; return _expression_to_firm(argument); } - case T___builtin_va_end: + case bk_gnu_builtin_va_end: /* evaluate the argument of va_end for its side effects */ _expression_to_firm(call->arguments->expression); return NULL; + case bk_gnu_builtin_frame_address: { + expression_t *const expression = call->arguments->expression; + bool val = fold_constant_to_bool(expression); + if (!val) { + /* the nice case */ + return get_irg_frame(current_ir_graph); + } else { + /* get the argument */ + ir_node *in[2]; + + 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), 2, in, ir_bk_frame_address, tp); + return new_Proj(irn, mode_P_data, pn_Builtin_1_result); + } + } + case bk_gnu_builtin_return_address: { + expression_t *const expression = call->arguments->expression; + ir_node *in[2]; + + 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), 2, in, ir_bk_return_address, tp); + return new_Proj(irn, mode_P_data, pn_Builtin_1_result); + } + case bk_gnu_builtin_ffs: + return gen_unary_builtin(ir_bk_ffs, call->arguments->expression, function_type, dbgi); + case bk_gnu_builtin_clz: + return gen_unary_builtin(ir_bk_clz, call->arguments->expression, function_type, dbgi); + case bk_gnu_builtin_ctz: + return gen_unary_builtin(ir_bk_ctz, call->arguments->expression, function_type, dbgi); + case bk_gnu_builtin_popcount: + case bk_ms__popcount: + return gen_unary_builtin(ir_bk_popcount, call->arguments->expression, function_type, dbgi); + case bk_gnu_builtin_parity: + return gen_unary_builtin(ir_bk_parity, call->arguments->expression, function_type, dbgi); + case bk_gnu_builtin_prefetch: { + call_argument_t *const args = call->arguments; + expression_t *const addr = args->expression; + ir_node *in[3]; + + in[0] = _expression_to_firm(addr); + if (args->next != NULL) { + expression_t *const rw = args->next->expression; + + in[1] = _expression_to_firm(rw); + + if (args->next->next != NULL) { + expression_t *const locality = args->next->next->expression; + + in[2] = expression_to_firm(locality); + } else { + in[2] = new_Const_long(mode_int, 3); + } + } else { + in[1] = new_Const_long(mode_int, 0); + 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(), 3, in, ir_bk_prefetch, tp); + set_store(new_Proj(irn, mode_M, pn_Builtin_M)); + return NULL; + } + case bk_gnu_builtin_object_size: { + /* determine value of "type" */ + expression_t *type_expression = call->arguments->next->expression; + long type_val = fold_constant_to_int(type_expression); + type_t *type = function_type->function.return_type; + ir_mode *mode = get_ir_mode_arithmetic(type); + /* just produce a "I don't know" result */ + ir_tarval *result = type_val & 2 ? get_mode_null(mode) : + get_mode_minus_one(mode); + + return new_d_Const(dbgi, result); + } + case bk_gnu_builtin_trap: + case bk_ms__ud2: + { + ir_type *tp = get_ir_type(function_type); + 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(), 0, NULL, ir_bk_debugbreak, tp); + set_store(new_Proj(irn, mode_M, pn_Builtin_M)); + return NULL; + } + case bk_ms_ReturnAddress: { + ir_node *in[2]; + + in[0] = new_Const(get_mode_null(mode_int)); + 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), 2, in, ir_bk_return_address, tp); + return new_Proj(irn, mode_P_data, pn_Builtin_1_result); + } + case bk_ms_rotl: + case bk_ms_rotl64: { + ir_node *val = expression_to_firm(call->arguments->expression); + ir_node *shf = expression_to_firm(call->arguments->next->expression); + ir_mode *mode = get_irn_mode(val); + return new_d_Rotl(dbgi, val, create_conv(dbgi, shf, mode_uint), mode); + } + case bk_ms_rotr: + case bk_ms_rotr64: { + ir_node *val = expression_to_firm(call->arguments->expression); + ir_node *shf = expression_to_firm(call->arguments->next->expression); + ir_mode *mode = get_irn_mode(val); + ir_node *c = new_Const_long(mode_uint, get_mode_size_bits(mode)); + ir_node *sub = new_d_Sub(dbgi, c, create_conv(dbgi, shf, mode_uint), mode_uint); + return new_d_Rotl(dbgi, val, sub, mode); + } + case bk_ms_byteswap_ushort: + case bk_ms_byteswap_ulong: + case bk_ms_byteswap_uint64: + return gen_unary_builtin(ir_bk_bswap, call->arguments->expression, function_type, dbgi); + case bk_ms__inbyte: + case bk_ms__inword: + case bk_ms__indword: + return gen_unary_builtin_pinned(ir_bk_inport, call->arguments->expression, function_type, dbgi); + case bk_ms__outbyte: + case bk_ms__outword: + case bk_ms__outdword: + return gen_binary_builtin_mem(ir_bk_outport, call->arguments->expression, + call->arguments->next->expression, function_type, dbgi); default: - panic("Unsupported builtin found\n"); + panic("unsupported builtin found"); } } @@ -1611,36 +1942,44 @@ static ir_node *process_builtin_call(const call_expression_t *call) * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not * handled right... */ -static ir_node *call_expression_to_firm(const call_expression_t *call) +static ir_node *call_expression_to_firm(const call_expression_t *const call) { - dbg_info *dbgi = get_dbg_info(&call->base.source_position); - assert(get_cur_block() != NULL); + dbg_info *const dbgi = get_dbg_info(&call->base.source_position); + assert(currently_reachable()); expression_t *function = call->function; - if (function->kind == EXPR_BUILTIN_SYMBOL) { - return process_builtin_call(call); - } if (function->kind == EXPR_REFERENCE) { const reference_expression_t *ref = &function->reference; entity_t *entity = ref->entity; - if (entity->kind == ENTITY_FUNCTION - && entity->function.entity == rts_entities[rts_alloca]) { - /* handle alloca() call */ - expression_t *argument = call->arguments->expression; - ir_node *size = expression_to_firm(argument); + if (entity->kind == ENTITY_FUNCTION) { + ir_entity *irentity = entity->function.irentity; + if (irentity == NULL) + irentity = get_function_entity(entity, NULL); - size = create_conv(dbgi, size, get_ir_mode(type_size_t)); + if (irentity == NULL && entity->function.btk != bk_none) { + return process_builtin_call(call); + } - ir_node *store = get_store(); - dbg_info *dbgi = get_dbg_info(&call->base.source_position); - ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type, - stack_alloc); - ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M); - set_store(proj_m); - ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res); +#if 0 + 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); - return res; + size = create_conv(dbgi, size, mode); + + 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; + } +#endif } } ir_node *callee = expression_to_firm(function); @@ -1663,10 +2002,9 @@ static ir_node *call_expression_to_firm(const call_expression_t *call) /* we need to construct a new method type matching the call * arguments... */ + type_dbg_info *tdbgi = get_type_dbg_info_((const type_t*) function_type); int n_res = get_method_n_ress(ir_method_type); - dbg_info *dbgi = get_dbg_info(&call->base.source_position); - new_method_type = new_d_type_method(id_unique("calltype.%u"), - n_parameters, n_res, dbgi); + new_method_type = new_d_type_method(n_parameters, n_res, tdbgi); set_method_calling_convention(new_method_type, get_method_calling_convention(ir_method_type)); set_method_additional_properties(new_method_type, @@ -1696,7 +2034,12 @@ static ir_node *call_expression_to_firm(const call_expression_t *call) expression_t *expression = argument->expression; ir_node *arg_node = expression_to_firm(expression); - arg_node = do_strict_conv(dbgi, arg_node); + type_t *arg_type = skip_typeref(expression->base.type); + if (!is_type_compound(arg_type)) { + ir_mode *mode = get_ir_mode_storage(expression->base.type); + arg_node = create_conv(dbgi, arg_node, mode); + arg_node = do_strict_conv(dbgi, arg_node); + } in[n] = arg_node; @@ -1706,21 +2049,24 @@ static ir_node *call_expression_to_firm(const call_expression_t *call) ir_node *store = get_store(); ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in, ir_method_type); - ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular); + ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M); set_store(mem); type_t *return_type = skip_typeref(function_type->return_type); ir_node *result = NULL; if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) { - ir_mode *mode; + ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result); + if (is_type_scalar(return_type)) { - mode = get_ir_mode(return_type); + ir_mode *mode = get_ir_mode_storage(return_type); + result = new_d_Proj(dbgi, resproj, mode, 0); + ir_mode *mode_arith = get_ir_mode_arithmetic(return_type); + result = create_conv(NULL, result, mode_arith); } else { - mode = mode_P_data; + ir_mode *mode = mode_P_data; + result = new_d_Proj(dbgi, resproj, mode, 0); } - ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result); - result = new_d_Proj(dbgi, resproj, mode, 0); } if (function->kind == EXPR_REFERENCE && @@ -1729,7 +2075,8 @@ static ir_node *call_expression_to_firm(const call_expression_t *call) * nodes into a new and unreachable block. */ keep_alive(node); keep_alive(get_cur_block()); - new_Block(0, NULL); + ir_node *block = new_Block(0, NULL); + set_cur_block(block); } return result; @@ -1746,28 +2093,32 @@ static ir_node *create_condition_evaluation(const expression_t *expression, static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type, ir_node *value) { - value = do_strict_conv(dbgi, value); + if (!is_type_compound(type)) { + ir_mode *mode = get_ir_mode_storage(type); + value = create_conv(dbgi, value, mode); + value = do_strict_conv(dbgi, value); + } ir_node *memory = get_store(); if (is_type_scalar(type)) { - ir_node *store = new_d_Store(dbgi, memory, addr, value); + ir_cons_flags flags = type->base.qualifiers & TYPE_QUALIFIER_VOLATILE + ? cons_volatile : cons_none; + ir_node *store = new_d_Store(dbgi, memory, addr, value, flags); ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M); - if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE && !is_Bad(store)) - set_Store_volatility(store, volatility_is_volatile); set_store(store_mem); } else { ir_type *irtype = get_ir_type(type); ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype); - ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular); + ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M); set_store(copyb_mem); } } -static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size) +static ir_tarval *create_bitfield_mask(ir_mode *mode, int offset, int size) { - tarval *all_one = get_mode_all_one(mode); - int mode_size = get_mode_size_bits(mode); + ir_tarval *all_one = get_mode_all_one(mode); + int mode_size = get_mode_size_bits(mode); assert(offset >= 0); assert(size >= 0); @@ -1776,17 +2127,17 @@ static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size) return all_one; } - long shiftr = get_mode_size_bits(mode) - size; - long shiftl = offset; - tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint); - tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint); - tarval *mask0 = tarval_shr(all_one, tv_shiftr); - tarval *mask1 = tarval_shl(mask0, tv_shiftl); + long shiftr = get_mode_size_bits(mode) - size; + long shiftl = offset; + ir_tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint); + ir_tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint); + ir_tarval *mask0 = tarval_shr(all_one, tv_shiftr); + ir_tarval *mask1 = tarval_shl(mask0, tv_shiftl); return mask1; } -static void bitfield_store_to_firm(dbg_info *dbgi, +static ir_node *bitfield_store_to_firm(dbg_info *dbgi, ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile) { ir_type *entity_type = get_entity_type(entity); @@ -1800,35 +2151,32 @@ static void bitfield_store_to_firm(dbg_info *dbgi, int bitoffset = get_entity_offset_bits_remainder(entity); int bitsize = get_mode_size_bits(get_type_mode(entity_type)); - tarval *mask = create_bitfield_mask(mode, 0, bitsize); - ir_node *mask_node = new_d_Const(dbgi, mask); - ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode); - tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint); - ir_node *shiftcount = new_d_Const(dbgi, shiftl); - ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode); + ir_tarval *mask = create_bitfield_mask(mode, 0, bitsize); + ir_node *mask_node = new_d_Const(dbgi, mask); + ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode); + ir_tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint); + ir_node *shiftcount = new_d_Const(dbgi, shiftl); + ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode); /* load current value */ - ir_node *mem = get_store(); - ir_node *load = new_d_Load(dbgi, mem, addr, mode); - ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M); - ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res); - tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize); - tarval *inv_mask = tarval_not(shift_mask); - ir_node *inv_mask_node = new_d_Const(dbgi, inv_mask); - ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode); + ir_node *mem = get_store(); + ir_node *load = new_d_Load(dbgi, mem, addr, mode, + set_volatile ? cons_volatile : cons_none); + ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M); + ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res); + ir_tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize); + ir_tarval *inv_mask = tarval_not(shift_mask); + ir_node *inv_mask_node = new_d_Const(dbgi, inv_mask); + ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode); /* construct new value and store */ ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode); - ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val); + ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val, + set_volatile ? cons_volatile : cons_none); ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M); set_store(store_mem); - if (set_volatile) { - if (!is_Bad(load)) - set_Load_volatility(load, volatility_is_volatile); - if (!is_Bad(store)) - set_Store_volatility(store, volatility_is_volatile); - } + return value_masked; } static ir_node *bitfield_extract_to_firm(const select_expression_t *expression, @@ -1836,9 +2184,9 @@ static ir_node *bitfield_extract_to_firm(const select_expression_t *expression, { dbg_info *dbgi = get_dbg_info(&expression->base.source_position); type_t *type = expression->base.type; - ir_mode *mode = get_ir_mode(type); + ir_mode *mode = get_ir_mode_storage(type); ir_node *mem = get_store(); - ir_node *load = new_d_Load(dbgi, mem, addr, mode); + ir_node *load = new_d_Load(dbgi, mem, addr, mode, cons_none); ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M); ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res); @@ -1854,13 +2202,13 @@ static ir_node *bitfield_extract_to_firm(const select_expression_t *expression, int bitsize = get_mode_size_bits(get_type_mode(entity_type)); long shift_bitsl = machine_size - bitoffset - bitsize; assert(shift_bitsl >= 0); - tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint); + ir_tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint); ir_node *countl = new_d_Const(dbgi, tvl); ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int); long shift_bitsr = bitoffset + shift_bitsl; assert(shift_bitsr <= (long) machine_size); - tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint); + ir_tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint); ir_node *countr = new_d_Const(dbgi, tvr); ir_node *shiftr; if (mode_is_signed(mode)) { @@ -1882,11 +2230,17 @@ static void construct_select_compound(const select_expression_t *expression) (void) get_ir_type(type); } -static void set_value_for_expression_addr(const expression_t *expression, - ir_node *value, ir_node *addr) +static ir_node *set_value_for_expression_addr(const expression_t *expression, + ir_node *value, ir_node *addr) { dbg_info *dbgi = get_dbg_info(&expression->base.source_position); - value = do_strict_conv(dbgi, value); + type_t *type = skip_typeref(expression->base.type); + + if (!is_type_compound(type)) { + ir_mode *mode = get_ir_mode_storage(type); + value = create_conv(dbgi, value, mode); + value = do_strict_conv(dbgi, value); + } if (expression->kind == EXPR_REFERENCE) { const reference_expression_t *ref = &expression->reference; @@ -1896,10 +2250,10 @@ static void set_value_for_expression_addr(const expression_t *expression, assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN); if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) { set_value(entity->variable.v.value_number, value); - return; + return value; } else if (entity->declaration.kind == DECLARATION_KIND_PARAMETER) { set_value(entity->parameter.v.value_number, value); - return; + return value; } } @@ -1907,8 +2261,6 @@ static void set_value_for_expression_addr(const expression_t *expression, addr = expression_to_addr(expression); assert(addr != NULL); - type_t *type = skip_typeref(expression->base.type); - if (expression->kind == EXPR_SELECT) { const select_expression_t *select = &expression->select; @@ -1920,12 +2272,14 @@ static void set_value_for_expression_addr(const expression_t *expression, ir_entity *irentity = entity->compound_member.entity; bool set_volatile = select->base.type->base.qualifiers & TYPE_QUALIFIER_VOLATILE; - bitfield_store_to_firm(dbgi, irentity, addr, value, set_volatile); - return; + value = bitfield_store_to_firm(dbgi, irentity, addr, value, + set_volatile); + return value; } } assign_value(dbgi, addr, type, value); + return value; } static void set_value_for_expression(const expression_t *expression, @@ -1944,14 +2298,21 @@ static ir_node *get_value_from_lvalue(const expression_t *expression, assert(entity->kind == ENTITY_VARIABLE || entity->kind == ENTITY_PARAMETER); assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN); + int value_number; if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) { + value_number = entity->variable.v.value_number; assert(addr == NULL); - ir_mode *mode = get_ir_mode(expression->base.type); - return get_value(entity->variable.v.value_number, mode); + type_t *type = skip_typeref(expression->base.type); + ir_mode *mode = get_ir_mode_storage(type); + ir_node *res = get_value(value_number, mode); + return create_conv(NULL, res, get_ir_mode_arithmetic(type)); } else if (entity->declaration.kind == DECLARATION_KIND_PARAMETER) { + value_number = entity->parameter.v.value_number; assert(addr == NULL); - ir_mode *mode = get_ir_mode(expression->base.type); - return get_value(entity->parameter.v.value_number, mode); + type_t *type = skip_typeref(expression->base.type); + ir_mode *mode = get_ir_mode_storage(type); + ir_node *res = get_value(value_number, mode); + return create_conv(NULL, res, get_ir_mode_arithmetic(type)); } } @@ -1979,12 +2340,12 @@ static ir_node *create_incdec(const unary_expression_t *expression) ir_node *value = get_value_from_lvalue(value_expr, addr); type_t *type = skip_typeref(expression->base.type); - ir_mode *mode = get_ir_mode(expression->base.type); + ir_mode *mode = get_ir_mode_arithmetic(expression->base.type); 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)); @@ -2030,22 +2391,21 @@ static bool is_local_variable(expression_t *expression) return entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE; } -static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type) +static ir_relation get_relation(const expression_kind_t kind) { switch(kind) { - case EXPR_BINARY_EQUAL: return pn_Cmp_Eq; - case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg; - case EXPR_BINARY_NOTEQUAL: - return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg; + case EXPR_BINARY_EQUAL: return ir_relation_equal; + case EXPR_BINARY_ISLESSGREATER: return ir_relation_less_greater; + case EXPR_BINARY_NOTEQUAL: return ir_relation_unordered_less_greater; case EXPR_BINARY_ISLESS: - case EXPR_BINARY_LESS: return pn_Cmp_Lt; + case EXPR_BINARY_LESS: return ir_relation_less; case EXPR_BINARY_ISLESSEQUAL: - case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le; + case EXPR_BINARY_LESSEQUAL: return ir_relation_less_equal; case EXPR_BINARY_ISGREATER: - case EXPR_BINARY_GREATER: return pn_Cmp_Gt; + case EXPR_BINARY_GREATER: return ir_relation_greater; case EXPR_BINARY_ISGREATEREQUAL: - case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge; - case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo; + case EXPR_BINARY_GREATEREQUAL: return ir_relation_greater_equal; + case EXPR_BINARY_ISUNORDERED: return ir_relation_unordered; default: break; @@ -2071,46 +2431,44 @@ static ir_node *handle_assume_compare(dbg_info *dbi, expression_t *op1 = expression->left; expression_t *op2 = expression->right; entity_t *var2, *var = NULL; - ir_node *res = NULL; - pn_Cmp cmp_val; - - cmp_val = get_pnc(expression->base.kind, op1->base.type); + ir_node *res = NULL; + ir_relation relation = get_relation(expression->base.kind); if (is_local_variable(op1) && is_local_variable(op2)) { - var = op1->reference.entity; + var = op1->reference.entity; var2 = op2->reference.entity; type_t *const type = skip_typeref(var->declaration.type); - ir_mode *const mode = get_ir_mode(type); + ir_mode *const mode = get_ir_mode_storage(type); ir_node *const irn1 = get_value(var->variable.v.value_number, mode); ir_node *const irn2 = get_value(var2->variable.v.value_number, mode); - res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val)); + res = new_d_Confirm(dbi, irn2, irn1, get_inversed_relation(relation)); set_value(var2->variable.v.value_number, res); - res = new_d_Confirm(dbi, irn1, irn2, cmp_val); + res = new_d_Confirm(dbi, irn1, irn2, relation); set_value(var->variable.v.value_number, res); return res; } - expression_t *con; - if (is_local_variable(op1) && is_constant_expression(op2)) { + expression_t *con = NULL; + if (is_local_variable(op1) && is_constant_expression(op2) == EXPR_CLASS_CONSTANT) { var = op1->reference.entity; con = op2; - } else if (is_constant_expression(op1) && is_local_variable(op2)) { - cmp_val = get_inversed_pnc(cmp_val); + } else if (is_constant_expression(op1) == EXPR_CLASS_CONSTANT && is_local_variable(op2)) { + relation = get_inversed_relation(relation); var = op2->reference.entity; con = op1; } if (var != NULL) { type_t *const type = skip_typeref(var->declaration.type); - ir_mode *const mode = get_ir_mode(type); + ir_mode *const mode = get_ir_mode_storage(type); res = get_value(var->variable.v.value_number, mode); - res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val); + res = new_d_Confirm(dbi, res, expression_to_firm(con), relation); set_value(var->variable.v.value_number, res); } return res; @@ -2122,7 +2480,8 @@ static ir_node *handle_assume_compare(dbg_info *dbi, * @param dbi debug info * @param expr the IL assume expression */ -static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) { +static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) +{ switch(expression->kind) { case EXPR_BINARY_EQUAL: case EXPR_BINARY_NOTEQUAL: @@ -2136,6 +2495,55 @@ 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 (type == type_void) { + /* make sure firm type is constructed */ + (void) get_ir_type(type); + return NULL; + } + 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 = create_symconst(dbgi, from_var->v.entity); + 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 = create_symconst(dbgi, to_var->v.entity); + 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); @@ -2149,14 +2557,14 @@ static ir_node *unary_expression_to_firm(const unary_expression_t *expression) switch(expression->base.kind) { case EXPR_UNARY_NEGATE: { ir_node *value_node = expression_to_firm(value); - ir_mode *mode = get_ir_mode(type); + ir_mode *mode = get_ir_mode_arithmetic(type); return new_d_Minus(dbgi, value_node, mode); } case EXPR_UNARY_PLUS: return expression_to_firm(value); case EXPR_UNARY_BITWISE_NEGATE: { ir_node *value_node = expression_to_firm(value); - ir_mode *mode = get_ir_mode(type); + ir_mode *mode = get_ir_mode_arithmetic(type); return new_d_Not(dbgi, value_node, mode); } case EXPR_UNARY_NOT: { @@ -2169,6 +2577,14 @@ static ir_node *unary_expression_to_firm(const unary_expression_t *expression) 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 = create_symconst(dbgi, base_var->v.entity); + 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); } @@ -2177,33 +2593,14 @@ 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(type); - ir_node *node = create_conv(dbgi, value_node, mode); - node = do_strict_conv(dbgi, node); - return node; - } else { - /* make sure firm type is constructed */ - (void) get_ir_type(type); - return value_node; - } - } - case EXPR_UNARY_CAST_IMPLICIT: { - ir_node *value_node = expression_to_firm(value); - if (is_type_scalar(type)) { - ir_mode *mode = get_ir_mode(type); - return create_conv(dbgi, value_node, mode); - } 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) - return handle_assume(dbgi, value); - else - return NULL; + return handle_assume(dbgi, value); default: break; @@ -2217,26 +2614,22 @@ static ir_node *unary_expression_to_firm(const unary_expression_t *expression) static ir_node *produce_condition_result(const expression_t *expression, ir_mode *mode, dbg_info *dbgi) { - ir_node *cur_block = get_cur_block(); - - ir_node *one_block = new_immBlock(); - ir_node *one = new_Const(get_mode_one(mode)); - ir_node *jmp_one = new_d_Jmp(dbgi); - - ir_node *zero_block = new_immBlock(); - ir_node *zero = new_Const(get_mode_null(mode)); - ir_node *jmp_zero = new_d_Jmp(dbgi); - - set_cur_block(cur_block); + ir_node *const one_block = new_immBlock(); + ir_node *const zero_block = new_immBlock(); create_condition_evaluation(expression, one_block, zero_block); mature_immBlock(one_block); mature_immBlock(zero_block); - ir_node *in_cf[2] = { jmp_one, jmp_zero }; - new_Block(2, in_cf); + ir_node *const jmp_one = new_rd_Jmp(dbgi, one_block); + ir_node *const jmp_zero = new_rd_Jmp(dbgi, zero_block); + ir_node *const in_cf[2] = { jmp_one, jmp_zero }; + ir_node *const block = new_Block(lengthof(in_cf), in_cf); + set_cur_block(block); - ir_node *in[2] = { one, zero }; - ir_node *val = new_d_Phi(dbgi, 2, in, mode); + ir_node *const one = new_Const(get_mode_one(mode)); + ir_node *const zero = new_Const(get_mode_null(mode)); + ir_node *const in[2] = { one, zero }; + ir_node *const val = new_d_Phi(dbgi, lengthof(in), in, mode); return val; } @@ -2244,26 +2637,14 @@ static ir_node *produce_condition_result(const expression_t *expression, static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi, ir_node *value, type_t *type) { - ir_mode *const mode = get_ir_mode(type_ptrdiff_t); + ir_mode *const mode = get_ir_mode_arithmetic(type_ptrdiff_t); assert(is_type_pointer(type)); pointer_type_t *const pointer_type = &type->pointer; type_t *const points_to = skip_typeref(pointer_type->points_to); - unsigned elem_size = get_type_size_const(points_to); - - value = create_conv(dbgi, value, mode); - - /* gcc extension: allow arithmetic with void * and function * */ - if ((elem_size == 0 && is_type_atomic(points_to, ATOMIC_TYPE_VOID)) || - is_type_function(points_to)) { - elem_size = 1; - } - - assert(elem_size >= 1); - if (elem_size == 1) - return value; - - ir_node *const cnst = new_Const_long(mode, (long)elem_size); - ir_node *const mul = new_d_Mul(dbgi, value, cnst, mode); + 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); return mul; } @@ -2281,7 +2662,7 @@ static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression, case EXPR_BINARY_SHIFTRIGHT: case EXPR_BINARY_SHIFTLEFT_ASSIGN: case EXPR_BINARY_SHIFTRIGHT_ASSIGN: - mode = get_irn_mode(left); + mode = get_ir_mode_arithmetic(expression->base.type); right = create_conv(dbgi, right, mode_uint); break; @@ -2289,8 +2670,8 @@ static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression, if (is_type_pointer(type_left) && is_type_pointer(type_right)) { const pointer_type_t *const ptr_type = &type_left->pointer; - mode = get_ir_mode(expression->base.type); - ir_node *const elem_size = get_type_size(ptr_type->points_to); + mode = get_ir_mode_arithmetic(expression->base.type); + 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(); @@ -2302,7 +2683,7 @@ static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression, case EXPR_BINARY_SUB_ASSIGN: if (is_type_pointer(type_left)) { right = adjust_for_pointer_arithmetic(dbgi, right, type_left); - mode = get_ir_mode(type_left); + mode = get_ir_mode_arithmetic(type_left); break; } goto normal_node; @@ -2311,18 +2692,18 @@ static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression, case EXPR_BINARY_ADD_ASSIGN: if (is_type_pointer(type_left)) { right = adjust_for_pointer_arithmetic(dbgi, right, type_left); - mode = get_ir_mode(type_left); + mode = get_ir_mode_arithmetic(type_left); break; } else if (is_type_pointer(type_right)) { left = adjust_for_pointer_arithmetic(dbgi, left, type_right); - mode = get_ir_mode(type_right); + mode = get_ir_mode_arithmetic(type_right); break; } goto normal_node; default: normal_node: - mode = get_ir_mode(type_right); + mode = get_ir_mode_arithmetic(type_right); left = create_conv(dbgi, left, mode); break; } @@ -2359,15 +2740,9 @@ normal_node: case EXPR_BINARY_DIV: case EXPR_BINARY_DIV_ASSIGN: { ir_node *pin = new_Pin(new_NoMem()); - ir_node *op; - ir_node *res; - if (mode_is_float(mode)) { - op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats); - res = new_d_Proj(dbgi, op, mode, pn_Quot_res); - } else { - op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats); - res = new_d_Proj(dbgi, op, mode, pn_Div_res); - } + ir_node *op = new_d_Div(dbgi, pin, left, right, mode, + op_pin_state_floats); + ir_node *res = new_d_Proj(dbgi, op, mode, pn_Div_res); return res; } case EXPR_BINARY_MOD: @@ -2387,19 +2762,29 @@ normal_node: static ir_node *create_lazy_op(const binary_expression_t *expression) { dbg_info *dbgi = get_dbg_info(&expression->base.source_position); - type_t *type = expression->base.type; - ir_mode *mode = get_ir_mode(type); + type_t *type = skip_typeref(expression->base.type); + ir_mode *mode = get_ir_mode_arithmetic(type); - if (is_constant_expression(expression->left)) { - long val = fold_constant(expression->left); + if (is_constant_expression(expression->left) == EXPR_CLASS_CONSTANT) { + 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 && val != 0) || - (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) { - return produce_condition_result(expression->right, mode, dbgi); + if (ekind == EXPR_BINARY_LOGICAL_AND) { + if (!val) { + return new_Const(get_mode_null(mode)); + } } else { - return new_Const(get_mode_one(mode)); + if (val) { + return new_Const(get_mode_one(mode)); + } + } + + if (is_constant_expression(expression->right) == EXPR_CLASS_CONSTANT) { + bool valr = fold_constant_to_bool(expression->right); + return create_Const_from_bool(mode, valr); } + + return produce_condition_result(expression->right, mode, dbgi); } return produce_condition_result((const expression_t*) expression, mode, @@ -2413,17 +2798,21 @@ static ir_node *create_assign_binop(const binary_expression_t *expression) { dbg_info *const dbgi = get_dbg_info(&expression->base.source_position); const expression_t *left_expr = expression->left; - ir_mode *left_mode = get_ir_mode(left_expr->base.type); + type_t *type = skip_typeref(left_expr->base.type); ir_node *right = expression_to_firm(expression->right); ir_node *left_addr = expression_to_addr(left_expr); ir_node *left = get_value_from_lvalue(left_expr, left_addr); ir_node *result = create_op(dbgi, expression, left, right); - result = create_conv(dbgi, result, left_mode); + result = create_cast(dbgi, result, expression->right->base.type, type); result = do_strict_conv(dbgi, result); - set_value_for_expression_addr(left_expr, result, left_addr); + result = set_value_for_expression_addr(left_expr, result, left_addr); + if (!is_type_compound(type)) { + ir_mode *mode_arithmetic = get_ir_mode_arithmetic(type); + result = create_conv(dbgi, result, mode_arithmetic); + } return result; } @@ -2444,20 +2833,25 @@ static ir_node *binary_expression_to_firm(const binary_expression_t *expression) case EXPR_BINARY_ISLESSEQUAL: case EXPR_BINARY_ISLESSGREATER: case EXPR_BINARY_ISUNORDERED: { - dbg_info *dbgi = get_dbg_info(&expression->base.source_position); - ir_node *left = expression_to_firm(expression->left); - ir_node *right = expression_to_firm(expression->right); - ir_node *cmp = new_d_Cmp(dbgi, left, right); - long pnc = get_pnc(kind, expression->left->base.type); - ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc); - return proj; + dbg_info *dbgi = get_dbg_info(&expression->base.source_position); + ir_node *left = expression_to_firm(expression->left); + ir_node *right = expression_to_firm(expression->right); + ir_relation relation = get_relation(kind); + ir_node *cmp = new_d_Cmp(dbgi, left, right, relation); + return cmp; } case EXPR_BINARY_ASSIGN: { ir_node *addr = expression_to_addr(expression->left); ir_node *right = expression_to_firm(expression->right); - set_value_for_expression_addr(expression->left, right, addr); + ir_node *res + = set_value_for_expression_addr(expression->left, right, addr); - return right; + type_t *type = skip_typeref(expression->base.type); + if (!is_type_compound(type)) { + ir_mode *mode_arithmetic = get_ir_mode_arithmetic(type); + res = create_conv(NULL, res, mode_arithmetic); + } + return res; } case EXPR_BINARY_ADD: case EXPR_BINARY_SUB: @@ -2557,7 +2951,7 @@ 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); @@ -2573,10 +2967,10 @@ static long get_offsetof_offset(const offsetof_expression_t *expression) static ir_node *offsetof_to_firm(const offsetof_expression_t *expression) { - ir_mode *mode = get_ir_mode(expression->base.type); - long offset = get_offsetof_offset(expression); - tarval *tv = new_tarval_from_long(offset, mode); - dbg_info *dbgi = get_dbg_info(&expression->base.source_position); + ir_mode *mode = get_ir_mode_arithmetic(expression->base.type); + long offset = get_offsetof_offset(expression); + ir_tarval *tv = new_tarval_from_long(offset, mode); + dbg_info *dbgi = get_dbg_info(&expression->base.source_position); return new_d_Const(dbgi, tv); } @@ -2598,14 +2992,12 @@ static ir_node *compound_literal_to_firm( ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi); set_entity_ld_ident(entity, id); - set_entity_variability(entity, variability_uninitialized); - /* create initialisation code */ initializer_t *initializer = expression->initializer; create_local_initializer(initializer, dbgi, entity, type); /* create a sel for the compound literal address */ - ir_node *frame = get_local_frame(entity); + ir_node *frame = get_irg_frame(current_ir_graph); ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity); return sel; } @@ -2615,20 +3007,43 @@ 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); - /* § 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */ + 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); } + /* strange gnu extensions: sizeof(function) == 1 */ + if (is_type_function(type)) { + ir_mode *mode = get_ir_mode_storage(type_size_t); + return new_Const(get_mode_one(mode)); + } + + return get_type_size_node(type); +} + +static entity_t *get_expression_entity(const expression_t *expression) +{ + if (expression->kind != EXPR_REFERENCE) + return NULL; + + return expression->reference.entity; +} - return get_type_size(type); +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; } /** @@ -2636,29 +3051,35 @@ static ir_node *sizeof_to_firm(const typeprop_expression_t *expression) */ static ir_node *alignof_to_firm(const typeprop_expression_t *expression) { - type_t *type = expression->type; - if (type == NULL) { - /* beware: if expression is a variable reference, return the - alignment of the variable. */ - const expression_t *tp_expression = expression->tp_expression; - const entity_t *entity = expression_is_variable(tp_expression); + 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) { - /* TODO: get the alignment of this variable. */ - (void) entity; + if (entity->kind == ENTITY_FUNCTION) { + /* a gnu-extension */ + alignment = 1; + } else { + alignment = get_cparser_entity_alignment(entity); + } } - type = tp_expression->base.type; - assert(type != NULL); } - ir_mode *const mode = get_ir_mode(expression->base.type); - symconst_symbol sym; - sym.type_p = get_ir_type(type); - return new_SymConst(mode, sym, symconst_type_align); + if (alignment == 0) { + type_t *type = expression->type; + alignment = get_type_alignment(type); + } + + dbg_info *dbgi = get_dbg_info(&expression->base.source_position); + ir_mode *mode = get_ir_mode_arithmetic(expression->base.type); + ir_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 ir_tarval *fold_constant_to_tarval(const expression_t *expression) { assert(is_type_valid(skip_typeref(expression->base.type))); @@ -2667,37 +3088,51 @@ long fold_constant(const expression_t *expression) init_ir_types(); - assert(is_constant_expression(expression)); + assert(is_constant_expression(expression) == EXPR_CLASS_CONSTANT); ir_graph *old_current_ir_graph = current_ir_graph; - if (current_ir_graph == NULL) { - current_ir_graph = get_const_code_irg(); - } + current_ir_graph = get_const_code_irg(); ir_node *cnst = expression_to_firm(expression); current_ir_graph = old_current_ir_graph; if (!is_Const(cnst)) { - panic("couldn't fold constant\n"); + panic("couldn't fold constant"); } - tarval *tv = get_Const_tarval(cnst); + constant_folding = constant_folding_old; + + return get_Const_tarval(cnst); +} + +long fold_constant_to_int(const expression_t *expression) +{ + if (expression->kind == EXPR_INVALID) + return 0; + + ir_tarval *tv = fold_constant_to_tarval(expression); if (!tarval_is_long(tv)) { - panic("result of constant folding is not integer\n"); + 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; + ir_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); + if (is_constant_expression(expression->condition) == EXPR_CLASS_CONSTANT) { + bool val = fold_constant_to_bool(expression->condition); if (val) { expression_t *true_expression = expression->true_expression; if (true_expression == NULL) @@ -2708,48 +3143,47 @@ static ir_node *conditional_to_firm(const conditional_expression_t *expression) } } - ir_node *cur_block = get_cur_block(); - - /* create the true block */ - ir_node *true_block = new_immBlock(); - - ir_node *true_val = expression->true_expression != NULL ? - expression_to_firm(expression->true_expression) : NULL; - ir_node *true_jmp = new_Jmp(); - - /* create the false block */ - ir_node *false_block = new_immBlock(); - - ir_node *false_val = expression_to_firm(expression->false_expression); - ir_node *false_jmp = new_Jmp(); - - /* create the condition evaluation */ - set_cur_block(cur_block); - ir_node *const cond_expr = create_condition_evaluation(expression->condition, true_block, false_block); - if (expression->true_expression == NULL) { - if (cond_expr != NULL) { - true_val = cond_expr; - } else { - /* Condition ended with a short circuit (&&, ||, !) operation. - * Generate a "1" as value for the true branch. */ - true_val = new_Const(get_mode_one(mode_Is)); - } - } + ir_node *const true_block = new_immBlock(); + ir_node *const false_block = new_immBlock(); + ir_node *const cond_expr = create_condition_evaluation(expression->condition, true_block, false_block); mature_immBlock(true_block); mature_immBlock(false_block); + set_cur_block(true_block); + ir_node *true_val; + if (expression->true_expression != NULL) { + true_val = expression_to_firm(expression->true_expression); + } else if (cond_expr != NULL && get_irn_mode(cond_expr) != mode_b) { + true_val = cond_expr; + } else { + /* Condition ended with a short circuit (&&, ||, !) operation or a + * comparison. Generate a "1" as value for the true branch. */ + true_val = new_Const(get_mode_one(mode_Is)); + } + ir_node *const true_jmp = new_d_Jmp(dbgi); + + set_cur_block(false_block); + ir_node *const false_val = expression_to_firm(expression->false_expression); + ir_node *const false_jmp = new_d_Jmp(dbgi); + /* create the common block */ - ir_node *in_cf[2] = { true_jmp, false_jmp }; - new_Block(2, in_cf); + ir_node *const in_cf[2] = { true_jmp, false_jmp }; + ir_node *const block = new_Block(lengthof(in_cf), in_cf); + set_cur_block(block); /* TODO improve static semantics, so either both or no values are NULL */ if (true_val == NULL || false_val == NULL) return NULL; - ir_node *in[2] = { true_val, false_val }; - ir_mode *mode = get_irn_mode(true_val); - assert(get_irn_mode(false_val) == mode); - ir_node *val = new_d_Phi(dbgi, 2, in, mode); + ir_node *const in[2] = { true_val, false_val }; + type_t *const type = skip_typeref(expression->base.type); + ir_mode *mode; + if (is_type_compound(type)) { + mode = mode_P; + } else { + mode = get_ir_mode_arithmetic(type); + } + ir_node *const val = new_d_Phi(dbgi, lengthof(in), in, mode); return val; } @@ -2888,7 +3322,6 @@ static ir_node *classify_type_to_firm(const classify_type_expression_t *const ex /* gcc classifies the referenced type */ case TYPE_REFERENCE: type = type->reference.refers_to; continue; - case TYPE_BUILTIN: /* typedef/typeof should be skipped already */ case TYPE_TYPEDEF: case TYPE_TYPEOF: @@ -2900,8 +3333,8 @@ static ir_node *classify_type_to_firm(const classify_type_expression_t *const ex } make_const:; - dbg_info *const dbgi = get_dbg_info(&expr->base.source_position); - tarval *const tv = new_tarval_from_long(tc, mode_int); + dbg_info *const dbgi = get_dbg_info(&expr->base.source_position); + ir_tarval *const tv = new_tarval_from_long(tc, mode_int); return new_d_Const(dbgi, tv); } @@ -2947,14 +3380,20 @@ static ir_node *va_start_expression_to_firm( 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); - - ir_node *const cnst = get_type_size(expr->parameter->base.type); - ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data); + new_d_simpleSel(dbgi, no_mem, frame, parm_ent); + + 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); + ir_node *const c3 = new_Const_long(mode, -(long)stack_param_align); + ir_node *const c4 = new_d_And(dbgi, c2, c3, mode); + ir_node *const add = new_d_Add(dbgi, arg_sel, c4, mode_P_data); set_value_for_expression(expr->ap, add); return NULL; @@ -2969,14 +3408,29 @@ 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 add = new_d_Add(dbgi, ap, cnst, mode_P_data); + 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); + ir_node *const c3 = new_Const_long(mode, -(long)stack_param_align); + ir_node *const c4 = new_d_And(dbgi, c2, c3, mode); + ir_node *const add = new_d_Add(dbgi, ap, c4, mode_P_data); set_value_for_expression_addr(ap_expr, add, ap_addr); return res; } +/** + * Generate Firm for a va_copy expression. + */ +static ir_node *va_copy_expression_to_firm(const va_copy_expression_t *const expr) +{ + ir_node *const src = expression_to_firm(expr->src); + set_value_for_expression(expr->dst, src); + return NULL; +} + static ir_node *dereference_addr(const unary_expression_t *const expression) { assert(expression->base.kind == EXPR_UNARY_DEREFERENCE); @@ -3010,24 +3464,19 @@ static ir_node *expression_to_addr(const expression_t *expression) static ir_node *builtin_constant_to_firm( const builtin_constant_expression_t *expression) { - ir_mode *mode = get_ir_mode(expression->base.type); - long v; - - if (is_constant_expression(expression->value)) { - v = 1; - } else { - v = 0; - } - return new_Const_long(mode, v); + ir_mode *const mode = get_ir_mode_arithmetic(expression->base.type); + bool const v = is_constant_expression(expression->value) == EXPR_CLASS_CONSTANT; + return create_Const_from_bool(mode, v); } -static ir_node *builtin_prefetch_to_firm( - const builtin_prefetch_expression_t *expression) +static ir_node *builtin_types_compatible_to_firm( + const builtin_types_compatible_expression_t *expression) { - ir_node *adr = expression_to_firm(expression->adr); - /* no Firm support for prefetch yet */ - (void) adr; - return NULL; + type_t *const left = get_unqualified_type(skip_typeref(expression->left)); + type_t *const right = get_unqualified_type(skip_typeref(expression->right)); + bool const value = types_compatible(left, right); + ir_mode *const mode = get_ir_mode_arithmetic(expression->base.type); + return create_Const_from_bool(mode, value); } static ir_node *get_label_block(label_t *label) @@ -3040,9 +3489,7 @@ static ir_node *get_label_block(label_t *label) ir_graph *rem = current_ir_graph; current_ir_graph = current_function; - ir_node *old_cur_block = get_cur_block(); - ir_node *block = new_immBlock(); - set_cur_block(old_cur_block); + ir_node *block = new_immBlock(); label->block = block; @@ -3056,36 +3503,15 @@ 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); -} - -static ir_node *builtin_symbol_to_firm( - const builtin_symbol_expression_t *expression) -{ - /* for gcc compatibility we have to produce (dummy) addresses for some - * builtins */ - if (warning.other) { - warningf(&expression->base.source_position, - "taking address of builtin '%Y'", expression->symbol); - } - - /* simply create a NULL pointer */ - ir_mode *mode = get_ir_mode(type_void_ptr); - ir_node *res = new_Const_long(mode, 0); - - return res; + value.entity_p = entity; + return new_d_SymConst(dbgi, mode_P_code, value, symconst_addr_ent); } /** @@ -3103,16 +3529,13 @@ static ir_node *_expression_to_firm(const expression_t *expression) #endif switch (expression->kind) { - case EXPR_CHARACTER_CONSTANT: - return character_constant_to_firm(&expression->conste); - case EXPR_WIDE_CHARACTER_CONSTANT: - return wide_character_constant_to_firm(&expression->conste); - case EXPR_CONST: - return const_to_firm(&expression->conste); + EXPR_LITERAL_CASES + return literal_to_firm(&expression->literal); case EXPR_STRING_LITERAL: - return string_literal_to_firm(&expression->string); + return string_to_firm(&expression->base.source_position, "str.%u", + &expression->literal.value); case EXPR_WIDE_STRING_LITERAL: - return wide_string_literal_to_firm(&expression->wide_string); + return wide_string_literal_to_firm(&expression->string_literal); case EXPR_REFERENCE: return reference_expression_to_firm(&expression->reference); case EXPR_REFERENCE_ENUM_VALUE: @@ -3143,12 +3566,12 @@ static ir_node *_expression_to_firm(const expression_t *expression) return va_start_expression_to_firm(&expression->va_starte); case EXPR_VA_ARG: return va_arg_expression_to_firm(&expression->va_arge); - case EXPR_BUILTIN_SYMBOL: - return builtin_symbol_to_firm(&expression->builtin_symbol); + case EXPR_VA_COPY: + return va_copy_expression_to_firm(&expression->va_copye); case EXPR_BUILTIN_CONSTANT_P: return builtin_constant_to_firm(&expression->builtin_constant); - case EXPR_BUILTIN_PREFETCH: - return builtin_prefetch_to_firm(&expression->builtin_prefetch); + case EXPR_BUILTIN_TYPES_COMPATIBLE_P: + return builtin_types_compatible_to_firm(&expression->builtin_types_compatible); case EXPR_OFFSETOF: return offsetof_to_firm(&expression->offsetofe); case EXPR_COMPOUND_LITERAL: @@ -3163,15 +3586,20 @@ static ir_node *_expression_to_firm(const expression_t *expression) panic("invalid expression found"); } +/** + * Check if a given expression is a GNU __builtin_expect() call. + */ static bool is_builtin_expect(const expression_t *expression) { if (expression->kind != EXPR_CALL) return false; expression_t *function = expression->call.function; - if (function->kind != EXPR_BUILTIN_SYMBOL) + if (function->kind != EXPR_REFERENCE) return false; - if (function->builtin_symbol.symbol->ID != T___builtin_expect) + reference_expression_t *ref = &function->reference; + if (ref->entity->kind != ENTITY_FUNCTION || + ref->entity->function.btk != bk_gnu_builtin_expect) return false; return true; @@ -3217,20 +3645,19 @@ static ir_node *expression_to_firm(const expression_t *expression) return res; } - if (is_constant_expression(expression)) { + if (is_constant_expression(expression) == EXPR_CLASS_CONSTANT) { + bool const constant_folding_old = constant_folding; + constant_folding = true; ir_node *res = _expression_to_firm(expression); - ir_mode *mode = get_ir_mode(expression->base.type); + constant_folding = constant_folding_old; + ir_mode *mode = get_ir_mode_arithmetic(expression->base.type); assert(is_Const(res)); - if (is_Const_null(res)) { - return new_Const_long(mode, 0); - } else { - return new_Const_long(mode, 1); - } + return create_Const_from_bool(mode, !is_Const_null(res)); } /* we have to produce a 0/1 from the mode_b expression */ dbg_info *dbgi = get_dbg_info(&expression->base.source_position); - ir_mode *mode = get_ir_mode(expression->base.type); + ir_mode *mode = get_ir_mode_arithmetic(expression->base.type); return produce_condition_result(expression, mode, dbgi); } @@ -3252,9 +3679,7 @@ static ir_node *create_condition_evaluation(const expression_t *expression, case EXPR_BINARY_LOGICAL_AND: { const binary_expression_t *binary_expression = &expression->binary; - ir_node *cur_block = get_cur_block(); ir_node *extra_block = new_immBlock(); - set_cur_block(cur_block); create_condition_evaluation(binary_expression->left, extra_block, false_block); mature_immBlock(extra_block); @@ -3266,9 +3691,7 @@ static ir_node *create_condition_evaluation(const expression_t *expression, case EXPR_BINARY_LOGICAL_OR: { const binary_expression_t *binary_expression = &expression->binary; - ir_node *cur_block = get_cur_block(); ir_node *extra_block = new_immBlock(); - set_cur_block(cur_block); create_condition_evaluation(binary_expression->left, true_block, extra_block); mature_immBlock(extra_block); @@ -3289,17 +3712,11 @@ static ir_node *create_condition_evaluation(const expression_t *expression, ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false); /* set branch prediction info based on __builtin_expect */ - if (is_builtin_expect(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); - cond_jmp_predicate pred; - - if (cnst == 0) { - pred = COND_JMP_PRED_FALSE; - } else { - pred = COND_JMP_PRED_TRUE; - } + if (is_constant_expression(argument->expression) == EXPR_CLASS_CONSTANT) { + bool const cnst = fold_constant_to_bool(argument->expression); + cond_jmp_predicate const pred = cnst ? COND_JMP_PRED_TRUE : COND_JMP_PRED_FALSE; set_Cond_jmp_pred(cond, pred); } } @@ -3307,32 +3724,30 @@ static ir_node *create_condition_evaluation(const expression_t *expression, add_immBlock_pred(true_block, true_proj); add_immBlock_pred(false_block, false_proj); - set_cur_block(NULL); + set_unreachable_now(); 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 *const type = skip_typeref(variable->declaration.type); - ident *const id = new_id_from_str(variable->base.symbol->string); - ir_type *const irtype = get_ir_type(type); - dbg_info *const dbgi = get_dbg_info(&variable->base.source_position); - ir_entity *const irentity = new_d_entity(parent_type, id, irtype, dbgi); + type_t *type = skip_typeref(variable->declaration.type); + + ident *const id = new_id_from_str(variable->base.symbol->string); + ir_type *const irtype = get_ir_type(type); + dbg_info *const dbgi = get_dbg_info(&variable->base.source_position); + ir_entity *const irentity = new_d_entity(parent_type, id, irtype, dbgi); + unsigned alignment = variable->declaration.alignment; - handle_gnu_attributes_ent(irentity, variable); + set_entity_alignment(irentity, alignment); + + handle_decl_modifiers(irentity, variable); variable->declaration.kind = (unsigned char) declaration_kind; variable->variable.v.entity = irentity; - set_entity_variability(irentity, variability_uninitialized); set_entity_ld_ident(irentity, create_ld_ident(variable)); - if (parent_type == get_tls_type()) - set_entity_allocation(irentity, allocation_automatic); - else if (declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE) - set_entity_allocation(irentity, allocation_static); if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) { set_entity_volatility(irentity, volatility_is_volatile); @@ -3505,6 +3920,27 @@ 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; @@ -3514,7 +3950,7 @@ 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) { @@ -3548,6 +3984,7 @@ 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; @@ -3571,7 +4008,7 @@ static void advance_current_object(type_path_t *path) /* we're past the last member of the current sub-aggregate, try if we * can ascend in the type hierarchy and continue with another subobject */ - size_t len = ARR_LEN(path->path); + size_t len = ARR_LEN(path->path); if (len > 1) { ascend_from_subtype(path); @@ -3591,7 +4028,20 @@ 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; + 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); } @@ -3685,14 +4135,14 @@ static ir_initializer_t *create_ir_initializer_string( ir_initializer_t *irinitializer = create_initializer_compound(len); const char *string = initializer->string.begin; - ir_mode *mode = get_ir_mode(type->array.element_type); + ir_mode *mode = get_ir_mode_storage(type->array.element_type); for (size_t i = 0; i < len; ++i) { char c = 0; if (i < string_len) c = string[i]; - tarval *tv = new_tarval_from_long(c, mode); + ir_tarval *tv = new_tarval_from_long(c, mode); ir_initializer_t *char_initializer = create_initializer_tarval(tv); set_initializer_compound_value(irinitializer, i, char_initializer); @@ -3704,21 +4154,21 @@ static ir_initializer_t *create_ir_initializer_string( static ir_initializer_t *create_ir_initializer_wide_string( const initializer_wide_string_t *initializer, type_t *type) { - size_t string_len = initializer->string.size; assert(type->kind == TYPE_ARRAY); assert(type->array.size_constant); size_t len = type->array.size; + size_t string_len = wstrlen(&initializer->string); ir_initializer_t *irinitializer = create_initializer_compound(len); - const wchar_rep_t *string = initializer->string.begin; - ir_mode *mode = get_type_mode(ir_type_wchar_t); + const char *p = initializer->string.begin; + ir_mode *mode = get_type_mode(ir_type_wchar_t); for (size_t i = 0; i < len; ++i) { - wchar_rep_t c = 0; + utf32 c = 0; if (i < string_len) { - c = string[i]; + c = read_utf8_char(&p); } - tarval *tv = new_tarval_from_long(c, mode); + ir_tarval *tv = new_tarval_from_long(c, mode); ir_initializer_t *char_initializer = create_initializer_tarval(tv); set_initializer_compound_value(irinitializer, i, char_initializer); @@ -3742,71 +4192,78 @@ static ir_initializer_t *create_ir_initializer( return create_ir_initializer_list(&initializer->list, type); case INITIALIZER_VALUE: - return create_ir_initializer_value(&initializer->value); - - case INITIALIZER_DESIGNATOR: - panic("unexpected designator initializer found"); - } - 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); - 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); - } + return create_ir_initializer_value(&initializer->value); - 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); + case INITIALIZER_DESIGNATOR: + panic("unexpected designator initializer found"); + } + panic("unknown initializer"); +} - irtype = get_entity_type(member); - addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member); - } +/** ANSI C §6.7.8:21: If there are fewer initializers [..] than there + * are elements [...] the remainder of the aggregate shall be initialized + * implicitly the same as objects that have static storage duration. */ +static void create_dynamic_null_initializer(ir_entity *entity, dbg_info *dbgi, + ir_node *base_addr) +{ + /* for unions we must NOT do anything for null initializers */ + ir_type *owner = get_entity_owner(entity); + if (is_Union_type(owner)) { + return; + } - create_dynamic_null_initializer(irtype, dbgi, addr); + ir_type *ent_type = get_entity_type(entity); + /* create sub-initializers for a compound type */ + if (is_compound_type(ent_type)) { + unsigned n_members = get_compound_n_members(ent_type); + for (unsigned n = 0; n < n_members; ++n) { + ir_entity *member = get_compound_member(ent_type, n); + ir_node *addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, + member); + create_dynamic_null_initializer(member, dbgi, addr); } + return; + } + if (is_Array_type(ent_type)) { + assert(has_array_upper_bound(ent_type, 0)); + long n = get_array_upper_bound_int(ent_type, 0); + for (long i = 0; i < n; ++i) { + ir_tarval *index_tv = new_tarval_from_long(i, mode_uint); + ir_node *cnst = new_d_Const(dbgi, index_tv); + ir_node *in[1] = { cnst }; + ir_entity *arrent = get_array_element_entity(ent_type); + ir_node *addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, + arrent); + create_dynamic_null_initializer(arrent, dbgi, addr); + } + return; + } + + ir_mode *value_mode = get_type_mode(ent_type); + ir_node *node = new_Const(get_mode_null(value_mode)); + + /* is it a bitfield type? */ + if (is_Primitive_type(ent_type) && + get_primitive_base_type(ent_type) != NULL) { + bitfield_store_to_firm(dbgi, entity, base_addr, node, false); + return; } + + ir_node *mem = get_store(); + ir_node *store = new_d_Store(dbgi, mem, base_addr, node, cons_none); + ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M); + set_store(proj_m); } 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); + case IR_INITIALIZER_NULL: + create_dynamic_null_initializer(entity, dbgi, base_addr); return; - } case IR_INITIALIZER_CONST: { ir_node *node = get_initializer_const_value(initializer); - ir_mode *mode = get_irn_mode(node); ir_type *ent_type = get_entity_type(entity); /* is it a bitfield type? */ @@ -3816,18 +4273,17 @@ static void create_dynamic_initializer_sub(ir_initializer_t *initializer, return; } - assert(get_type_mode(type) == mode); + assert(get_type_mode(type) == get_irn_mode(node)); ir_node *mem = get_store(); - ir_node *store = new_d_Store(dbgi, mem, base_addr, node); + ir_node *store = new_d_Store(dbgi, mem, base_addr, node, cons_none); ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M); set_store(proj_m); return; } case IR_INITIALIZER_TARVAL: { - tarval *tv = get_initializer_tarval_value(initializer); - ir_mode *mode = get_tarval_mode(tv); - ir_node *cnst = new_d_Const(dbgi, tv); - ir_type *ent_type = get_entity_type(entity); + ir_tarval *tv = get_initializer_tarval_value(initializer); + ir_node *cnst = new_d_Const(dbgi, tv); + ir_type *ent_type = get_entity_type(entity); /* is it a bitfield type? */ if (is_Primitive_type(ent_type) && @@ -3836,15 +4292,15 @@ static void create_dynamic_initializer_sub(ir_initializer_t *initializer, return; } - assert(get_type_mode(type) == mode); + assert(get_type_mode(type) == get_tarval_mode(tv)); ir_node *mem = get_store(); - ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst); + 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); return; } case IR_INITIALIZER_COMPOUND: { - assert(is_compound_type(type)); + assert(is_compound_type(type) || is_Array_type(type)); int n_members; if (is_Array_type(type)) { assert(has_array_upper_bound(type, 0)); @@ -3862,7 +4318,7 @@ static void create_dynamic_initializer_sub(ir_initializer_t *initializer, ir_type *irtype; ir_entity *sub_entity; if (is_Array_type(type)) { - tarval *index_tv = new_tarval_from_long(i, mode_uint); + ir_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); @@ -3892,7 +4348,7 @@ static void create_dynamic_initializer_sub(ir_initializer_t *initializer, 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); @@ -3916,9 +4372,14 @@ static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi, return; } - if (!is_constant_initializer(initializer)) { + if (is_constant_initializer(initializer) == EXPR_CLASS_VARIABLE) { + 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; @@ -3940,16 +4401,15 @@ static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi, ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi); set_entity_ld_ident(init_entity, id); - set_entity_variability(init_entity, variability_initialized); - set_entity_visibility(init_entity, visibility_local); - set_entity_allocation(init_entity, allocation_static); + set_entity_visibility(init_entity, ir_visibility_private); + add_entity_linkage(init_entity, IR_LINKAGE_CONSTANT); set_entity_initializer(init_entity, irinitializer); - ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity); + ir_node *const src_addr = create_symconst(dbgi, init_entity); ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype); - ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular); + ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M); set_store(copyb_mem); } @@ -3960,6 +4420,7 @@ static void create_initializer_local_variable_entity(entity_t *entity) dbg_info *dbgi = get_dbg_info(&entity->base.source_position); ir_entity *irentity = entity->variable.v.entity; type_t *type = entity->declaration.type; + create_local_initializer(initializer, dbgi, irentity, type); } @@ -3985,6 +4446,10 @@ static void create_variable_initializer(entity_t *entity) dbg_info *dbgi = get_dbg_info(&entity->base.source_position); ir_node *value = expression_to_firm(initializer_value->value); + + type_t *init_type = initializer_value->value->base.type; + ir_mode *mode = get_ir_mode_storage(init_type); + value = create_conv(dbgi, value, mode); value = do_strict_conv(dbgi, value); if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) { @@ -3994,10 +4459,9 @@ static void create_variable_initializer(entity_t *entity) ir_entity *irentity = entity->variable.v.entity; - if (tq & TYPE_QUALIFIER_CONST) { - set_entity_variability(irentity, variability_constant); - } else { - set_entity_variability(irentity, variability_initialized); + if (tq & TYPE_QUALIFIER_CONST + && get_entity_owner(irentity) != get_tls_type()) { + add_entity_linkage(irentity, IR_LINKAGE_CONSTANT); } set_atomic_ent_value(irentity, value); } @@ -4010,9 +4474,7 @@ static void create_variable_initializer(entity_t *entity) = create_ir_initializer(initializer, type); if (tq & TYPE_QUALIFIER_CONST) { - set_entity_variability(irentity, variability_constant); - } else { - set_entity_variability(irentity, variability_initialized); + add_entity_linkage(irentity, IR_LINKAGE_CONSTANT); } set_entity_initializer(irentity, irinitializer); } @@ -4034,14 +4496,14 @@ static void allocate_variable_length_array(entity_t *entity) { assert(entity->kind == ENTITY_VARIABLE); assert(entity->variable.initializer == NULL); - assert(get_cur_block() != NULL); + assert(currently_reachable()); dbg_info *dbgi = get_dbg_info(&entity->base.source_position); type_t *type = entity->declaration.type; ir_type *el_type = get_ir_type(type->array.element_type); /* make sure size_node is calculated */ - get_type_size(type); + 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); @@ -4094,17 +4556,16 @@ static void create_local_static_variable(entity_t *entity) assert(entity->kind == ENTITY_VARIABLE); assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN); - type_t *const type = skip_typeref(entity->declaration.type); - 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")]; snprintf(buf, sizeof(buf), "%s.%%u", entity->base.symbol->string); - ident *const id = id_unique(buf); - + ident *const id = id_unique(buf); ir_entity *const irentity = new_d_entity(var_type, id, irtype, dbgi); if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) { @@ -4113,11 +4574,9 @@ static void create_local_static_variable(entity_t *entity) entity->declaration.kind = DECLARATION_KIND_GLOBAL_VARIABLE; entity->variable.v.entity = irentity; + set_entity_ld_ident(irentity, id); - set_entity_variability(irentity, variability_uninitialized); - set_entity_visibility(irentity, visibility_local); - set_entity_allocation(irentity, entity->variable.thread_local ? - allocation_automatic : allocation_static); + set_entity_visibility(irentity, ir_visibility_local); ir_graph *const old_current_ir_graph = current_ir_graph; current_ir_graph = get_const_code_irg(); @@ -4132,14 +4591,13 @@ static void create_local_static_variable(entity_t *entity) static void return_statement_to_firm(return_statement_t *statement) { - if (get_cur_block() == NULL) + if (!currently_reachable()) return; dbg_info *dbgi = get_dbg_info(&statement->base.source_position); type_t *type = current_function_entity->declaration.type; ir_type *func_irtype = get_ir_type(type); - ir_node *in[1]; int in_len; if (get_method_n_ress(func_irtype) > 0) { @@ -4147,7 +4605,12 @@ static void return_statement_to_firm(return_statement_t *statement) if (statement->value != NULL) { ir_node *node = expression_to_firm(statement->value); - node = do_strict_conv(dbgi, node); + if (!is_compound_type(res_type)) { + type_t *ret_value_type = statement->value->base.type; + ir_mode *mode = get_ir_mode_storage(ret_value_type); + node = create_conv(dbgi, node, mode); + node = do_strict_conv(dbgi, node); + } in[0] = node; } else { ir_mode *mode; @@ -4173,12 +4636,12 @@ static void return_statement_to_firm(return_statement_t *statement) ir_node *end_block = get_irg_end_block(current_ir_graph); add_immBlock_pred(end_block, ret); - set_cur_block(NULL); + set_unreachable_now(); } static ir_node *expression_statement_to_firm(expression_statement_t *statement) { - if (get_cur_block() == NULL) + if (!currently_reachable()) return NULL; return expression_to_firm(statement->expression); @@ -4211,22 +4674,36 @@ static ir_node *compound_statement_to_firm(compound_statement_t *compound) static void create_global_variable(entity_t *entity) { + ir_linkage linkage = IR_LINKAGE_DEFAULT; + ir_visibility visibility = ir_visibility_default; + ir_entity *irentity; assert(entity->kind == ENTITY_VARIABLE); - ir_visibility vis; switch ((storage_class_tag_t)entity->declaration.storage_class) { - case STORAGE_CLASS_STATIC: vis = visibility_local; break; - case STORAGE_CLASS_EXTERN: vis = visibility_external_allocated; break; - case STORAGE_CLASS_NONE: vis = visibility_external_visible; break; - - default: panic("Invalid storage class for global variable"); + case STORAGE_CLASS_EXTERN: visibility = ir_visibility_external; break; + case STORAGE_CLASS_STATIC: visibility = ir_visibility_local; break; + case STORAGE_CLASS_NONE: + visibility = ir_visibility_default; + /* uninitialized globals get merged in C */ + if (entity->variable.initializer == NULL) + linkage |= IR_LINKAGE_MERGE; + break; + case STORAGE_CLASS_TYPEDEF: + case STORAGE_CLASS_AUTO: + case STORAGE_CLASS_REGISTER: + panic("invalid storage class for global var"); } - ir_type *var_type = entity->variable.thread_local ? - get_tls_type() : get_glob_type(); - create_variable_entity(entity, - DECLARATION_KIND_GLOBAL_VARIABLE, var_type); - set_entity_visibility(entity->variable.v.entity, vis); + ir_type *var_type = get_glob_type(); + if (entity->variable.thread_local) { + var_type = get_tls_type(); + /* LINKAGE_MERGE not supported by current linkers */ + linkage &= ~IR_LINKAGE_MERGE; + } + create_variable_entity(entity, DECLARATION_KIND_GLOBAL_VARIABLE, var_type); + irentity = entity->variable.v.entity; + add_entity_linkage(irentity, linkage); + set_entity_visibility(irentity, visibility); } static void create_local_declaration(entity_t *entity) @@ -4241,12 +4718,16 @@ 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) { assert(entity->function.statement == NULL); - get_function_entity(entity); + (void)get_function_entity(entity, NULL); } else { create_global_variable(entity); create_variable_initializer(entity); @@ -4257,11 +4738,12 @@ static void create_local_declaration(entity_t *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); @@ -4278,6 +4760,11 @@ 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 + && !currently_reachable()) + return; + switch ((declaration_kind_t) entity->declaration.kind) { case DECLARATION_KIND_LOCAL_VARIABLE: case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: @@ -4306,185 +4793,170 @@ static void initialize_local_declaration(entity_t *entity) static void declaration_statement_to_firm(declaration_statement_t *statement) { - entity_t * entity = statement->declarations_begin; - entity_t *const last = statement->declarations_end; - if (entity != NULL) { - for ( ;; entity = entity->base.next) { - if (is_declaration(entity)) - initialize_local_declaration(entity); - if (entity == last) - break; + entity_t *entity = statement->declarations_begin; + if (entity == NULL) + return; + + entity_t *const last = statement->declarations_end; + for ( ;; entity = entity->base.next) { + 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); } + if (entity == last) + break; } } static void if_statement_to_firm(if_statement_t *statement) { - ir_node *cur_block = get_cur_block(); - - ir_node *fallthrough_block = NULL; - - /* the true (blocks) */ - ir_node *true_block = NULL; - if (statement->true_statement != NULL) { - true_block = new_immBlock(); - statement_to_firm(statement->true_statement); - if (get_cur_block() != NULL) { - ir_node *jmp = new_Jmp(); - if (fallthrough_block == NULL) - fallthrough_block = new_immBlock(); - add_immBlock_pred(fallthrough_block, jmp); - } - } - - /* the false (blocks) */ + /* Create the condition. */ + ir_node *true_block = NULL; ir_node *false_block = NULL; - if (statement->false_statement != NULL) { + if (currently_reachable()) { + true_block = new_immBlock(); false_block = new_immBlock(); + create_condition_evaluation(statement->condition, true_block, false_block); + mature_immBlock(true_block); + } + /* Create the false statement. + * Handle false before true, so if no false statement is present, then the + * empty false block is reused as fallthrough block. */ + ir_node *fallthrough_block = NULL; + if (statement->false_statement != NULL) { + if (false_block != NULL) { + mature_immBlock(false_block); + } + set_cur_block(false_block); statement_to_firm(statement->false_statement); - if (get_cur_block() != NULL) { - ir_node *jmp = new_Jmp(); - if (fallthrough_block == NULL) - fallthrough_block = new_immBlock(); - add_immBlock_pred(fallthrough_block, jmp); + if (currently_reachable()) { + fallthrough_block = new_immBlock(); + add_immBlock_pred(fallthrough_block, new_Jmp()); } + } else { + fallthrough_block = false_block; } - /* create the condition */ - if (cur_block != NULL) { - if (true_block == NULL || false_block == NULL) { - if (fallthrough_block == NULL) - fallthrough_block = new_immBlock(); - if (true_block == NULL) - true_block = fallthrough_block; - if (false_block == NULL) - false_block = fallthrough_block; + /* Create the true statement. */ + set_cur_block(true_block); + statement_to_firm(statement->true_statement); + if (currently_reachable()) { + if (fallthrough_block == NULL) { + fallthrough_block = new_immBlock(); } - - set_cur_block(cur_block); - create_condition_evaluation(statement->condition, true_block, - false_block); + add_immBlock_pred(fallthrough_block, new_Jmp()); } - mature_immBlock(true_block); - if (false_block != fallthrough_block && false_block != NULL) { - mature_immBlock(false_block); - } + /* Handle the block after the if-statement. */ if (fallthrough_block != NULL) { mature_immBlock(fallthrough_block); } - set_cur_block(fallthrough_block); } -static void while_statement_to_firm(while_statement_t *statement) +/* Create a jump node which jumps into target_block, if the current block is + * reachable. */ +static void jump_if_reachable(ir_node *const target_block) { - ir_node *jmp = NULL; - if (get_cur_block() != NULL) { - jmp = new_Jmp(); - } - - /* create the header block */ - ir_node *header_block = new_immBlock(); - if (jmp != NULL) { - add_immBlock_pred(header_block, jmp); - } - - /* the loop body */ - ir_node *old_continue_label = continue_label; - ir_node *old_break_label = break_label; - continue_label = header_block; - break_label = NULL; - - ir_node *body_block = new_immBlock(); - statement_to_firm(statement->body); - ir_node *false_block = break_label; - - assert(continue_label == header_block); - continue_label = old_continue_label; - break_label = old_break_label; - - if (get_cur_block() != NULL) { - jmp = new_Jmp(); - add_immBlock_pred(header_block, jmp); - } + ir_node *const pred = currently_reachable() ? new_Jmp() : new_Bad(mode_X); + add_immBlock_pred(target_block, pred); +} - /* shortcut for while(true) */ - if (is_constant_expression(statement->condition) - && fold_constant(statement->condition) != 0) { - set_cur_block(header_block); - ir_node *header_jmp = new_Jmp(); - add_immBlock_pred(body_block, header_jmp); +static void while_statement_to_firm(while_statement_t *statement) +{ + /* Create the header block */ + ir_node *const header_block = new_immBlock(); + jump_if_reachable(header_block); + + /* Create the condition. */ + ir_node * body_block; + ir_node * false_block; + expression_t *const cond = statement->condition; + if (is_constant_expression(cond) == EXPR_CLASS_CONSTANT && + fold_constant_to_bool(cond)) { + /* Shortcut for while (true). */ + body_block = header_block; + false_block = NULL; - keep_alive(body_block); - keep_all_memory(body_block); - set_cur_block(body_block); + keep_alive(header_block); + keep_all_memory(header_block); } else { - if (false_block == NULL) { - false_block = new_immBlock(); - } + body_block = new_immBlock(); + false_block = new_immBlock(); - /* create the condition */ set_cur_block(header_block); - - create_condition_evaluation(statement->condition, body_block, - false_block); + create_condition_evaluation(cond, body_block, false_block); + mature_immBlock(body_block); } - mature_immBlock(body_block); + ir_node *const old_continue_label = continue_label; + ir_node *const old_break_label = break_label; + continue_label = header_block; + break_label = false_block; + + /* Create the loop body. */ + set_cur_block(body_block); + statement_to_firm(statement->body); + jump_if_reachable(header_block); + mature_immBlock(header_block); + assert(false_block == NULL || false_block == break_label); + false_block = break_label; if (false_block != NULL) { mature_immBlock(false_block); } - set_cur_block(false_block); + + assert(continue_label == header_block); + continue_label = old_continue_label; + break_label = old_break_label; } -static void do_while_statement_to_firm(do_while_statement_t *statement) +static ir_node *get_break_label(void) { - ir_node *jmp = NULL; - if (get_cur_block() != NULL) { - jmp = new_Jmp(); + if (break_label == NULL) { + break_label = new_immBlock(); } + return break_label; +} +static void do_while_statement_to_firm(do_while_statement_t *statement) +{ /* create the header block */ ir_node *header_block = new_immBlock(); /* the loop body */ ir_node *body_block = new_immBlock(); - if (jmp != NULL) { - add_immBlock_pred(body_block, jmp); - } + jump_if_reachable(body_block); ir_node *old_continue_label = continue_label; ir_node *old_break_label = break_label; continue_label = header_block; break_label = NULL; + set_cur_block(body_block); statement_to_firm(statement->body); - ir_node *false_block = break_label; + ir_node *const false_block = get_break_label(); assert(continue_label == header_block); continue_label = old_continue_label; break_label = old_break_label; - if (get_cur_block() != NULL) { - ir_node *body_jmp = new_Jmp(); - add_immBlock_pred(header_block, body_jmp); - mature_immBlock(header_block); - } - - if (false_block == NULL) { - false_block = new_immBlock(); - } + jump_if_reachable(header_block); /* create the condition */ + mature_immBlock(header_block); set_cur_block(header_block); create_condition_evaluation(statement->condition, body_block, false_block); mature_immBlock(body_block); - mature_immBlock(header_block); mature_immBlock(false_block); set_cur_block(false_block); @@ -4492,8 +4964,6 @@ static void do_while_statement_to_firm(do_while_statement_t *statement) static void for_statement_to_firm(for_statement_t *statement) { - ir_node *jmp = NULL; - /* create declarations */ entity_t *entity = statement->scope.entities; for ( ; entity != NULL; entity = entity->base.next) { @@ -4503,7 +4973,7 @@ static void for_statement_to_firm(for_statement_t *statement) create_local_declaration(entity); } - if (get_cur_block() != NULL) { + if (currently_reachable()) { entity = statement->scope.entities; for ( ; entity != NULL; entity = entity->base.next) { if (!is_declaration(entity)) @@ -4515,104 +4985,95 @@ static void for_statement_to_firm(for_statement_t *statement) if (statement->initialisation != NULL) { expression_to_firm(statement->initialisation); } - - jmp = new_Jmp(); - } - - - /* create the step block */ - ir_node *const step_block = new_immBlock(); - if (statement->step != NULL) { - expression_to_firm(statement->step); } - ir_node *const step_jmp = new_Jmp(); - /* create the header block */ + /* Create the header block */ ir_node *const header_block = new_immBlock(); - if (jmp != NULL) { - add_immBlock_pred(header_block, jmp); - } - add_immBlock_pred(header_block, step_jmp); + jump_if_reachable(header_block); - /* the false block */ - ir_node *const false_block = new_immBlock(); - - /* the loop body */ + /* Create the condition. */ ir_node *body_block; - if (statement->body != NULL) { - ir_node *const old_continue_label = continue_label; - ir_node *const old_break_label = break_label; - continue_label = step_block; - break_label = false_block; - - body_block = new_immBlock(); - statement_to_firm(statement->body); - - assert(continue_label == step_block); - assert(break_label == false_block); - continue_label = old_continue_label; - break_label = old_break_label; - - if (get_cur_block() != NULL) { - jmp = new_Jmp(); - add_immBlock_pred(step_block, jmp); - } - } else { - body_block = step_block; - } - - /* create the condition */ - set_cur_block(header_block); + ir_node *false_block; if (statement->condition != NULL) { - create_condition_evaluation(statement->condition, body_block, - false_block); + body_block = new_immBlock(); + false_block = new_immBlock(); + + set_cur_block(header_block); + create_condition_evaluation(statement->condition, body_block, false_block); + mature_immBlock(body_block); } else { + /* for-ever. */ + body_block = header_block; + false_block = NULL; + keep_alive(header_block); keep_all_memory(header_block); - jmp = new_Jmp(); - add_immBlock_pred(body_block, jmp); } - mature_immBlock(body_block); - mature_immBlock(false_block); - mature_immBlock(step_block); - mature_immBlock(header_block); - mature_immBlock(false_block); + /* Create the step block, if necessary. */ + ir_node * step_block = header_block; + expression_t *const step = statement->step; + if (step != NULL) { + step_block = new_immBlock(); + } + + ir_node *const old_continue_label = continue_label; + ir_node *const old_break_label = break_label; + continue_label = step_block; + break_label = false_block; + /* Create the loop body. */ + set_cur_block(body_block); + statement_to_firm(statement->body); + jump_if_reachable(step_block); + + /* Create the step code. */ + if (step != NULL) { + mature_immBlock(step_block); + set_cur_block(step_block); + expression_to_firm(step); + jump_if_reachable(header_block); + } + + mature_immBlock(header_block); + assert(false_block == NULL || false_block == break_label); + false_block = break_label; + if (false_block != NULL) { + mature_immBlock(false_block); + } set_cur_block(false_block); + + assert(continue_label == step_block); + continue_label = old_continue_label; + break_label = old_break_label; } static void create_jump_statement(const statement_t *statement, ir_node *target_block) { - if (get_cur_block() == NULL) + if (!currently_reachable()) return; dbg_info *dbgi = get_dbg_info(&statement->base.source_position); ir_node *jump = new_d_Jmp(dbgi); add_immBlock_pred(target_block, jump); - set_cur_block(NULL); -} - -static ir_node *get_break_label(void) -{ - if (break_label == NULL) { - ir_node *cur_block = get_cur_block(); - break_label = new_immBlock(); - set_cur_block(cur_block); - } - return break_label; + set_unreachable_now(); } 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 (currently_reachable()) { + ir_node *expression = expression_to_firm(statement->expression); + cond = new_d_Cond(dbgi, expression); + first_block = get_cur_block(); + } - set_cur_block(NULL); + set_unreachable_now(); ir_node *const old_switch_cond = current_switch_cond; ir_node *const old_break_label = break_label; @@ -4624,8 +5085,8 @@ static void switch_statement_to_firm(switch_statement_t *statement) current_switch = statement; /* determine a free number for the default label */ - unsigned long num_cases = 0; - long def_nr = 0; + unsigned long num_cases = 0; + long default_proj_nr = 0; for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) { if (l->expression == NULL) { /* default case */ @@ -4633,18 +5094,18 @@ static void switch_statement_to_firm(switch_statement_t *statement) } if (l->last_case >= l->first_case) num_cases += l->last_case - l->first_case + 1; - if (l->last_case > def_nr) - def_nr = l->last_case; + if (l->last_case > default_proj_nr) + default_proj_nr = l->last_case; } - if (def_nr == INT_MAX) { - /* Bad: an overflow will occurr, we cannot be sure that the + if (default_proj_nr == LONG_MAX) { + /* 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. */ unsigned char *bits = xmalloc((num_cases + 7) >> 3); - memset(bits, 0, (num_cases + 7) >> 3); + memset(bits, 0, (num_cases + 7) >> 3); for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) { if (l->expression == NULL) { /* default case */ @@ -4660,8 +5121,8 @@ 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; @@ -4670,25 +5131,23 @@ static void switch_statement_to_firm(switch_statement_t *statement) break; free(bits); - def_nr = i; + default_proj_nr = i; } else { - ++def_nr; + ++default_proj_nr; } - statement->default_proj_nr = def_nr; - - if (statement->body != NULL) { - statement_to_firm(statement->body); + statement->default_proj_nr = default_proj_nr; + /* safety check: cond might already be folded to a Bad */ + if (cond != NULL && is_Cond(cond)) { + set_Cond_default_proj(cond, default_proj_nr); } - if (get_cur_block() != NULL) { - ir_node *jmp = new_Jmp(); - add_immBlock_pred(get_break_label(), jmp); - } + statement_to_firm(statement->body); + + jump_if_reachable(get_break_label()); - if (!saw_default_label) { - set_cur_block(get_nodes_block(cond)); - ir_node *const proj = new_d_defaultProj(dbgi, cond, - statement->default_proj_nr); + if (!saw_default_label && first_block != NULL) { + set_cur_block(first_block); + ir_node *const proj = new_d_Proj(dbgi, cond, mode_X, default_proj_nr); add_immBlock_pred(get_break_label(), proj); } @@ -4709,64 +5168,51 @@ static void case_label_to_firm(const case_label_statement_t *statement) if (statement->is_empty_range) return; - dbg_info *dbgi = get_dbg_info(&statement->base.source_position); - - ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp()); - - ir_node *proj; - ir_node *old_block = get_nodes_block(current_switch_cond); - ir_node *block = new_immBlock(); - - set_cur_block(old_block); - if (statement->expression != NULL) { - long 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); + ir_node *block = new_immBlock(); + /* Fallthrough from previous case */ + jump_if_reachable(block); + + if (current_switch_cond != NULL) { + set_cur_block(get_nodes_block(current_switch_cond)); + dbg_info *const dbgi = get_dbg_info(&statement->base.source_position); + 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 { + ir_node *const 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; + ir_node *const proj = new_d_Proj(dbgi, current_switch_cond, mode_X, + current_switch->default_proj_nr); 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) { - add_immBlock_pred(block, fallthrough); - } mature_immBlock(block); set_cur_block(block); - if (statement->statement != NULL) { - statement_to_firm(statement->statement); - } + statement_to_firm(statement->statement); } static void label_to_firm(const label_statement_t *statement) { ir_node *block = get_label_block(statement->label); - - if (get_cur_block() != NULL) { - ir_node *jmp = new_Jmp(); - add_immBlock_pred(block, jmp); - } + jump_if_reachable(block); set_cur_block(block); keep_alive(block); keep_all_memory(block); - if (statement->statement != NULL) { - statement_to_firm(statement->statement); - } + statement_to_firm(statement->statement); } static void goto_to_firm(const goto_statement_t *statement) { - if (get_cur_block() == NULL) + if (!currently_reachable()) return; if (statement->expression) { @@ -4781,7 +5227,7 @@ static void goto_to_firm(const goto_statement_t *statement) ir_node *jmp = new_Jmp(); add_immBlock_pred(block, jmp); } - set_cur_block(NULL); + set_unreachable_now(); } static void asm_statement_to_firm(const asm_statement_t *statement) @@ -4844,20 +5290,19 @@ static void asm_statement_to_firm(const asm_statement_t *statement) asm_constraint_flags_t asm_flags = be_parse_asm_constraints(constraints); - if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) { - warningf(&statement->base.source_position, - "some constraints in '%s' are not supported", constraints); - } - if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) { - errorf(&statement->base.source_position, - "some constraints in '%s' are invalid", constraints); - continue; - } - if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) { - errorf(&statement->base.source_position, - "no write flag specified for output constraints '%s'", - constraints); - continue; + { + source_position_t const *const pos = &statement->base.source_position; + if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) { + warningf(WARN_OTHER, pos, "some constraints in '%s' are not supported", constraints); + } + if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) { + errorf(pos, "some constraints in '%s' are invalid", constraints); + continue; + } + if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) { + errorf(pos, "no write flag specified for output constraints '%s'", constraints); + continue; + } } unsigned pos = next_pos++; @@ -4871,12 +5316,12 @@ 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; constraint.constraint = new_id_from_str(buf); - constraint.mode = get_ir_mode(expr->base.type); + constraint.mode = get_ir_mode_storage(expr->base.type); tmp_in_constraints[in_size] = constraint; ins[in_size] = value; @@ -4916,7 +5361,7 @@ static void asm_statement_to_firm(const asm_statement_t *statement) ir_asm_constraint constraint; constraint.pos = pos; constraint.constraint = new_id_from_str(constraints); - constraint.mode = get_ir_mode(argument->expression->base.type); + constraint.mode = get_ir_mode_storage(argument->expression->base.type); obstack_grow(&asm_obst, &constraint, sizeof(constraint)); } @@ -5011,7 +5456,7 @@ static void asm_statement_to_firm(const asm_statement_t *statement) /* create output projs & connect them */ if (needs_memory) { - ir_node *projm = new_Proj(node, mode_M, out_size+1); + ir_node *projm = new_Proj(node, mode_M, out_size); set_store(projm); } @@ -5019,7 +5464,7 @@ static void asm_statement_to_firm(const asm_statement_t *statement) for (i = 0; i < out_size; ++i) { const expression_t *out_expr = out_exprs[i]; long pn = i; - ir_mode *mode = get_ir_mode(out_expr->base.type); + ir_mode *mode = get_ir_mode_storage(out_expr->base.type); ir_node *proj = new_Proj(node, mode, pn); ir_node *addr = out_addrs[i]; @@ -5027,12 +5472,15 @@ static void asm_statement_to_firm(const asm_statement_t *statement) } } -static void ms_try_statement_to_firm(ms_try_statement_t *statement) { +static void ms_try_statement_to_firm(ms_try_statement_t *statement) +{ statement_to_firm(statement->try_statement); - warningf(&statement->base.source_position, "structured exception handling ignored"); + source_position_t const *const pos = &statement->base.source_position; + warningf(WARN_OTHER, pos, "structured exception handling ignored"); } -static void leave_statement_to_firm(leave_statement_t *statement) { +static void leave_statement_to_firm(leave_statement_t *statement) +{ errorf(&statement->base.source_position, "__leave not supported yet"); } @@ -5091,10 +5539,6 @@ static void statement_to_firm(statement_t *statement) case STATEMENT_LABEL: label_to_firm(&statement->label); return; - case STATEMENT_LOCAL_LABEL: - /* local labels transform the semantics of labels while parsing - * they don't need any special treatment here */ - return; case STATEMENT_GOTO: goto_to_firm(&statement->gotos); return; @@ -5108,14 +5552,15 @@ static void statement_to_firm(statement_t *statement) leave_statement_to_firm(&statement->leave); return; } - panic("Statement not implemented\n"); + panic("statement not implemented"); } static int count_local_variables(const entity_t *entity, const entity_t *const last) { int count = 0; - for (; entity != NULL; entity = entity->base.next) { + entity_t const *const end = last != NULL ? last->base.next : NULL; + for (; entity != end; entity = entity->base.next) { type_t *type; bool address_taken; @@ -5131,9 +5576,6 @@ static int count_local_variables(const entity_t *entity, if (!address_taken && is_type_scalar(type)) ++count; - - if (entity == last) - break; } return count; } @@ -5159,31 +5601,45 @@ static void count_local_variables_in_stmt(statement_t *stmt, void *const env) } } +/** + * 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_graph *irg = current_ir_graph; ir_node *args = get_irg_args(irg); - ir_node *start_block = get_irg_start_block(irg); ir_type *function_irtype = get_ir_type(entity->declaration.type); + int first_param_nr = 0; + + if (entity->function.need_closure) { + /* add an extra parameter for the static link */ + entity->function.static_link = new_r_Proj(args, mode_P_data, 0); + ++first_param_nr; + } int n = 0; entity_t *parameter = entity->function.parameters.entities; for ( ; parameter != NULL; parameter = parameter->base.next, ++n) { - assert(parameter->kind == ENTITY_PARAMETER); + if (parameter->kind != ENTITY_PARAMETER) + continue; + assert(parameter->declaration.kind == DECLARATION_KIND_UNKNOWN); type_t *type = skip_typeref(parameter->declaration.type); @@ -5194,23 +5650,23 @@ static void initialize_function_parameters(entity_t *entity) } if (needs_entity) { - ir_entity *entity = get_method_value_param_ent(function_irtype, n); - ident *id = new_id_from_str(parameter->base.symbol->string); - set_entity_ident(entity, id); + ir_entity *param = get_method_value_param_ent(function_irtype, n); + ident *id = new_id_from_str(parameter->base.symbol->string); + set_entity_ident(param, id); parameter->declaration.kind = DECLARATION_KIND_PARAMETER_ENTITY; - parameter->parameter.v.entity = entity; + parameter->parameter.v.entity = param; continue; } ir_type *param_irtype = get_method_param_type(function_irtype, n); ir_mode *param_mode = get_type_mode(param_irtype); - long pn = n; - ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn); + long pn = n + first_param_nr; + ir_node *value = new_r_Proj(args, param_mode, pn); - ir_mode *mode = get_ir_mode(type); + ir_mode *mode = get_ir_mode_storage(type); value = create_conv(NULL, value, mode); value = do_strict_conv(NULL, value); @@ -5230,22 +5686,27 @@ 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)) */ + add_irg_additional_properties(irg, mtp_property_returns_twice); + } if (decl_modifiers & DM_NORETURN) { /* TRUE if the declaration includes the Microsoft __declspec(noreturn) specifier. */ - set_irg_additional_property(irg, mtp_property_noreturn); + add_irg_additional_properties(irg, mtp_property_noreturn); } if (decl_modifiers & DM_NOTHROW) { /* TRUE if the declaration includes the Microsoft __declspec(nothrow) specifier. */ - set_irg_additional_property(irg, mtp_property_nothrow); + add_irg_additional_properties(irg, mtp_property_nothrow); } if (decl_modifiers & DM_NAKED) { /* TRUE if the declaration includes the Microsoft __declspec(naked) specifier. */ - set_irg_additional_property(irg, mtp_property_naked); + add_irg_additional_properties(irg, mtp_property_naked); } if (decl_modifiers & DM_FORCEINLINE) { /* TRUE if the declaration includes the @@ -5263,24 +5724,30 @@ static void add_function_pointer(ir_type *segment, ir_entity *method, const char *unique_template) { ir_type *method_type = get_entity_type(method); - ident *id = id_unique(unique_template); - ir_type *ptr_type = new_type_pointer(id, method_type, mode_P_code); + ir_type *ptr_type = new_type_pointer(method_type); + /* these entities don't really have a name but firm only allows + * "" in ld_ident. + * Note that we mustn't give these entities a name since for example + * Mach-O doesn't allow them. */ ident *ide = id_unique(unique_template); ir_entity *ptr = new_entity(segment, ide, ptr_type); ir_graph *irg = get_const_code_irg(); ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code, - method, NULL); + method); + set_entity_ld_ident(ptr, new_id_from_chars("", 0)); set_entity_compiler_generated(ptr, 1); - set_entity_variability(ptr, variability_constant); + set_entity_visibility(ptr, ir_visibility_private); + add_entity_linkage(ptr, IR_LINKAGE_CONSTANT|IR_LINKAGE_HIDDEN_USER); set_atomic_ent_value(ptr, val); } /** * Generate possible IJmp branches to a given label block. */ -static void gen_ijmp_branches(ir_node *block) { +static void gen_ijmp_branches(ir_node *block) +{ ir_node *ijmp; for (ijmp = ijmp_list; ijmp != NULL; ijmp = get_irn_link(ijmp)) { add_immBlock_pred(block, ijmp); @@ -5288,16 +5755,25 @@ static void gen_ijmp_branches(ir_node *block) { } /** - * 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; + if (is_main(entity) && enable_main_collect2_hack) { + prepare_main_collect2(entity); + } + + 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"); @@ -5317,13 +5793,15 @@ static void create_function(entity_t *entity) int n_local_vars = get_function_n_local_vars(entity); ir_graph *irg = new_ir_graph(function_entity, n_local_vars); + current_ir_graph = irg; ir_graph *old_current_function = current_function; current_function = irg; - set_irg_fp_model(irg, firm_opt.fp_model); - tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0); - set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity)); + set_irg_fp_model(irg, firm_fp_model); + tarval_enable_fp_ops(1); + set_irn_dbg_info(get_irg_start_block(irg), + get_entity_dbg_info(function_entity)); ir_node *first_block = get_cur_block(); @@ -5334,13 +5812,14 @@ static void create_function(entity_t *entity) next_value_number_function = 0; initialize_function_parameters(entity); + current_static_link = entity->function.static_link; statement_to_firm(entity->function.statement); ir_node *end_block = get_irg_end_block(irg); /* do we have a return statement yet? */ - if (get_cur_block() != NULL) { + if (currently_reachable()) { type_t *type = skip_typeref(entity->declaration.type); assert(is_type_function(type)); const function_type_t *func_type = &type->function; @@ -5353,7 +5832,7 @@ static void create_function(entity_t *entity) } else { ir_mode *mode; if (is_type_scalar(return_type)) { - mode = get_ir_mode(func_type->return_type); + mode = get_ir_mode_storage(func_type->return_type); } else { mode = mode_P_data; } @@ -5382,9 +5861,8 @@ static void create_function(entity_t *entity) if (has_computed_gotos) { /* if we have computed goto's in the function, we cannot inline it */ if (get_irg_inline_property(irg) >= irg_inline_recomended) { - warningf(&entity->base.source_position, - "function '%Y' can never be inlined because it contains a computed goto", - entity->base.symbol); + source_position_t const *const pos = &entity->base.source_position; + warningf(WARN_OTHER, pos, "'%N' can never be inlined because it contains a computed goto", entity); } set_irg_inline_property(irg, irg_inline_forbidden); } @@ -5403,8 +5881,8 @@ static void create_function(entity_t *entity) int align_all = 4; int offset = 0; for (int i = 0; i < n; ++i) { - ir_entity *entity = get_compound_member(frame_type, i); - ir_type *entity_type = get_entity_type(entity); + ir_entity *member = get_compound_member(frame_type, i); + ir_type *entity_type = get_entity_type(member); int align = get_type_alignment_bytes(entity_type); if (align > align_all) @@ -5417,20 +5895,34 @@ static void create_function(entity_t *entity) } } - set_entity_offset(entity, offset); + set_entity_offset(member, offset); offset += get_type_size_bytes(entity_type); } set_type_size_bytes(frame_type, offset); set_type_alignment_bytes(frame_type, align_all); - irg_vrfy(irg); + irg_verify(irg, VERIFY_ENFORCE_SSA); 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; } } @@ -5443,9 +5935,15 @@ static void scope_to_firm(scope_t *scope) continue; if (entity->kind == ENTITY_FUNCTION) { - get_function_entity(entity); + if (entity->function.btk != bk_none) { + /* builtins have no representation */ + continue; + } + (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); } } @@ -5456,6 +5954,10 @@ static void scope_to_firm(scope_t *scope) continue; if (entity->kind == ENTITY_FUNCTION) { + if (entity->function.btk != bk_none) { + /* builtins have no representation */ + continue; + } create_function(entity); } else if (entity->kind == ENTITY_VARIABLE) { assert(entity->declaration.kind @@ -5471,23 +5973,11 @@ void init_ast2firm(void) obstack_init(&asm_obst); init_atomic_modes(); - /* OS option must be set to the backend */ - switch (firm_opt.os_support) { - case OS_SUPPORT_MINGW: - create_ld_ident = create_name_win32; - break; - case OS_SUPPORT_LINUX: - create_ld_ident = create_name_linux_elf; - break; - case OS_SUPPORT_MACHO: - create_ld_ident = create_name_macho; - break; - default: - panic("unexpected OS support mode"); - } + ir_set_debug_retrieve(dbg_retrieve); + ir_set_type_debug_retrieve(dbg_print_type_dbg_info); /* create idents for all known runtime functions */ - for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) { + for (size_t i = 0; i < lengthof(rts_data); ++i) { rts_idents[i] = new_id_from_str(rts_data[i].name); } @@ -5502,9 +5992,15 @@ static void init_ir_types(void) 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); + + be_params = be_get_backend_param(); + mode_float_arithmetic = be_params->mode_float_arithmetic; + + stack_param_align = be_params->stack_param_align; } void exit_ast2firm(void) @@ -5532,6 +6028,10 @@ static void global_asm_to_firm(statement_t *s) void translation_unit_to_firm(translation_unit_t *unit) { + /* initialize firm arithmetic */ + tarval_set_integer_overflow_mode(TV_OVERFLOW_WRAP); + ir_set_uninitialized_local_variable_func(uninitialized_local_var); + /* just to be sure */ continue_label = NULL; break_label = NULL; @@ -5539,14 +6039,10 @@ void translation_unit_to_firm(translation_unit_t *unit) 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; }