X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ast2firm.c;h=459be893f13bfe8530a2f87192626a80ce6a4f5a;hb=fbbb2b6932bdd8455b850b750d93b4d5584402a7;hp=ec29144fd62806fbfabace2f0e239f9dfad9e445;hpb=d63bc459f39d3c7d91c3c3d7cbfa470e8ae825e6;p=cparser diff --git a/ast2firm.c b/ast2firm.c index ec29144..50ab325 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 @@ -22,96 +22,132 @@ #include #include #include +#include #include #include +#include #include "ast2firm.h" #include "adt/error.h" #include "adt/array.h" +#include "adt/util.h" #include "symbol_t.h" #include "token_t.h" #include "type_t.h" #include "ast_t.h" +#include "entity_t.h" #include "parser.h" #include "diagnostic.h" #include "lang_features.h" #include "types.h" +#include "type_hash.h" +#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" -#define MAGIC_DEFAULT_PN_NUMBER (long) -314159265 +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 */ +}; -/* some idents needed for name mangling */ -static ident *id_underscore; -static ident *id_imp; +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; -static type_t *type_const_char; - -static int next_value_number_function; -static ir_node *continue_label; -static ir_node *break_label; -static ir_node *current_switch_cond; -static bool saw_default_label; -static ir_node **imature_blocks; - -static const declaration_t *current_function_decl; -static ir_node *current_function_name; -static ir_node *current_funcsig; +/* 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; +static ir_node *current_switch_cond; +static bool saw_default_label; +static label_t **all_labels; +static entity_t **inner_functions; +static ir_node *ijmp_list; +static bool constant_folding; +static bool initializer_use_bitfield_basetype; + +extern bool have_const_functions; + +static const entity_t *current_function_entity; +static ir_node *current_function_name; +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; static struct obstack asm_obst; typedef enum declaration_kind_t { DECLARATION_KIND_UNKNOWN, - DECLARATION_KIND_FUNCTION, DECLARATION_KIND_VARIABLE_LENGTH_ARRAY, DECLARATION_KIND_GLOBAL_VARIABLE, DECLARATION_KIND_LOCAL_VARIABLE, DECLARATION_KIND_LOCAL_VARIABLE_ENTITY, + DECLARATION_KIND_PARAMETER, + DECLARATION_KIND_PARAMETER_ENTITY, + DECLARATION_KIND_FUNCTION, DECLARATION_KIND_COMPOUND_MEMBER, - DECLARATION_KIND_LABEL_BLOCK, - DECLARATION_KIND_ENUM_ENTRY, - DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE, - DECLARATION_KIND_COMPOUND_TYPE_COMPLETE, - DECLARATION_KIND_TYPE + DECLARATION_KIND_INNER_FUNCTION } declaration_kind_t; -static ir_type *get_ir_type(type_t *type); +static ir_mode *get_ir_mode_storage(type_t *type); +/* + * 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); + static ir_type *get_ir_type_incomplete(type_t *type); -static int count_decls_in_stmts(const statement_t *stmt); -ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos) +static void enqueue_inner_function(entity_t *entity) { - const declaration_t *declaration = get_irg_loc_description(irg, pos); - - warningf(&declaration->source_position, - "variable '%#T' might be used uninitialized", - declaration->type, declaration->symbol); - return new_r_Unknown(irg, mode); + if (inner_functions == NULL) + inner_functions = NEW_ARR_F(entity_t *, 0); + ARR_APP1(entity_t*, inner_functions, entity); } -unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg) +static ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos) { - 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 entity_t *entity = get_irg_loc_description(irg, pos); + + if (entity != NULL && warning.uninitialized) { + warningf(&entity->base.source_position, + "%s '%#T' might be used uninitialized", + get_entity_kind_name(entity->kind), + entity->declaration.type, entity->base.symbol); + } + return new_r_Unknown(irg, mode); } -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) + if (pos == NULL) return NULL; - if(line != NULL) + if (line != NULL) *line = pos->linenr; return pos->input_name; } @@ -121,37 +157,52 @@ static dbg_info *get_dbg_info(const source_position_t *pos) return (dbg_info*) pos; } -static ir_mode *_atomic_modes[ATOMIC_TYPE_LAST+1]; +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; +} + +static ir_mode *atomic_modes[ATOMIC_TYPE_LAST+1]; static ir_mode *mode_int, *mode_uint; static ir_node *_expression_to_firm(const expression_t *expression); static ir_node *expression_to_firm(const expression_t *expression); -static inline ir_mode *get_ir_mode(type_t *type); -static void create_local_declaration(declaration_t *declaration); +static void create_local_declaration(entity_t *entity); static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind) { unsigned flags = get_atomic_type_flags(kind); unsigned size = get_atomic_type_size(kind); - if( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT)) + if ( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT)) && !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) { char name[64]; ir_mode_sort sort; unsigned bit_size = size * 8; bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0; - ir_mode_arithmetic arithmetic; unsigned modulo_shift; + ir_mode_arithmetic arithmetic; - if(flags & ATOMIC_TYPE_FLAG_INTEGER) { + if (flags & ATOMIC_TYPE_FLAG_INTEGER) { assert(! (flags & ATOMIC_TYPE_FLAG_FLOAT)); - snprintf(name, sizeof(name), "i%s%d", is_signed?"":"u", bit_size); + snprintf(name, sizeof(name), "%s%u", is_signed ? "I" : "U", + bit_size); sort = irms_int_number; arithmetic = irma_twos_complement; modulo_shift = bit_size < machine_size ? machine_size : bit_size; } else { assert(flags & ATOMIC_TYPE_FLAG_FLOAT); - snprintf(name, sizeof(name), "f%d", bit_size); + snprintf(name, sizeof(name), "F%u", bit_size); sort = irms_float_number; arithmetic = irma_ieee754; modulo_shift = 0; @@ -168,14 +219,14 @@ static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind) */ static void init_atomic_modes(void) { - for(int i = 0; i <= ATOMIC_TYPE_LAST; ++i) { - _atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i); + for (int i = 0; i <= ATOMIC_TYPE_LAST; ++i) { + atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i); } - mode_int = _atomic_modes[ATOMIC_TYPE_INT]; - mode_uint = _atomic_modes[ATOMIC_TYPE_UINT]; + mode_int = atomic_modes[ATOMIC_TYPE_INT]; + mode_uint = atomic_modes[ATOMIC_TYPE_UINT]; /* there's no real void type in firm */ - _atomic_modes[ATOMIC_TYPE_VOID] = mode_int; + atomic_modes[ATOMIC_TYPE_VOID] = atomic_modes[ATOMIC_TYPE_CHAR]; /* initialize pointer modes */ char name[64]; @@ -186,88 +237,50 @@ static void init_atomic_modes(void) unsigned modulo_shift = bit_size < machine_size ? machine_size : bit_size; - snprintf(name, sizeof(name), "p%d", machine_size); + snprintf(name, sizeof(name), "p%u", machine_size); ir_mode *ptr_mode = new_ir_mode(name, sort, bit_size, is_signed, arithmetic, modulo_shift); - set_reference_mode_signed_eq(ptr_mode, _atomic_modes[get_intptr_kind()]); - set_reference_mode_unsigned_eq(ptr_mode, _atomic_modes[get_uintptr_kind()]); + set_reference_mode_signed_eq(ptr_mode, atomic_modes[get_intptr_kind()]); + set_reference_mode_unsigned_eq(ptr_mode, atomic_modes[get_uintptr_kind()]); /* Hmm, pointers should be machine size */ set_modeP_data(ptr_mode); set_modeP_code(ptr_mode); } -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) +ir_mode *get_atomic_mode(atomic_type_kind_t kind) { - assert(!type->is_vla); - ir_type *irtype = get_ir_type((type_t*) type); - return get_type_size_bytes(irtype); + assert(kind <= ATOMIC_TYPE_LAST); + return atomic_modes[kind]; } - -static unsigned get_type_size_const(type_t *type) +static ir_node *get_vla_size(array_type_t *const type) { - type = skip_typeref(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: - 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); - assert(!is_Const(size_node)); - type->array.size_node = size_node; - } - - ir_node *elem_size = get_type_size(type->array.element_type); + if (is_type_array(type) && type->array.is_vla) { + ir_node *size_node = get_vla_size(&type->array); + ir_node *elem_size = get_type_size_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); @@ -288,15 +301,14 @@ 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) { - dbg_info *dbgi = get_dbg_info(&type->base.source_position); - atomic_type_kind_t kind = type->akind; - ir_mode *mode = _atomic_modes[kind]; - ident *id = get_mode_ident(mode); - ir_type *irtype = new_d_type_primitive(id, mode, dbgi); + 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; } @@ -306,13 +318,11 @@ static ir_type *create_atomic_type(const atomic_type_t *type) */ static ir_type *create_complex_type(const complex_type_t *type) { - dbg_info *dbgi = get_dbg_info(&type->base.source_position); - atomic_type_kind_t kind = type->akind; - ir_mode *mode = _atomic_modes[kind]; - ident *id = get_mode_ident(mode); + atomic_type_kind_t kind = type->akind; + ir_mode *mode = atomic_modes[kind]; + ident *id = get_mode_ident(mode); (void) id; - (void) dbgi; /* FIXME: finish the array */ return NULL; @@ -321,28 +331,36 @@ 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) { - dbg_info *dbgi = get_dbg_info(&type->base.source_position); - atomic_type_kind_t kind = type->akind; - ir_mode *mode = _atomic_modes[kind]; - ident *id = get_mode_ident(mode); - ir_type *irtype = new_d_type_primitive(id, mode, dbgi); + return create_atomic_type(type->akind, (const type_t*) type); +} - set_type_alignment_bytes(irtype, type->base.alignment); +/** + * return type of a parameter (and take transparent union gnu extension into + * account) + */ +static type_t *get_parameter_type(type_t *orig_type) +{ + type_t *type = skip_typeref(orig_type); + if (is_type_union(type) + && get_type_modifiers(orig_type) & DM_TRANSPARENT_UNION) { + compound_t *compound = type->compound.compound; + type = compound->members.entities->declaration.type; + } - return irtype; + 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 = 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; - dbg_info *dbgi = get_dbg_info(&function_type->base.source_position); - ir_type *irtype = new_d_type_method(id, n_parameters, n_results, dbgi); + 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); @@ -351,49 +369,94 @@ 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) { - ir_type *p_irtype = get_ir_type(parameter->type); + type_t *type = get_parameter_type(parameter->type); + ir_type *p_irtype = get_ir_type(type); set_method_param_type(irtype, n, p_irtype); ++n; } - 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) { + case CC_DEFAULT: /* unspecified calling convention, equal to one of the other, typically cdecl */ + case CC_CDECL: +is_cdecl: + set_method_calling_convention(irtype, SET_CDECL(cc)); + break; + + case CC_STDCALL: + if (is_variadic) + goto is_cdecl; + + /* only non-variadic function can use stdcall, else use cdecl */ + set_method_calling_convention(irtype, SET_STDCALL(cc)); + break; + + case CC_FASTCALL: + if (is_variadic) + goto is_cdecl; + /* only non-variadic function can use fastcall, else use cdecl */ + set_method_calling_convention(irtype, SET_FASTCALL(cc)); + break; + + case CC_THISCALL: + /* Hmm, leave default, not accepted by the parser yet. */ + 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); - dbg_info *dbgi = get_dbg_info(&type->base.source_position); - ir_type *ir_type = new_d_type_pointer(id_unique("pointer.%u"), - ir_points_to, mode_P_data, dbgi); + 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 *ir_type = new_d_type_pointer(ir_points_to, dbgi); return ir_type; } -static ir_type *create_array_type(array_type_t *type) +static ir_type *create_reference_type(reference_type_t *type) { - type_t *element_type = type->element_type; - ir_type *ir_element_type = get_ir_type(element_type); + 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 *ir_type = new_d_type_pointer(ir_refers_to, dbgi); + + return ir_type; +} - ident *id = id_unique("array.%u"); - dbg_info *dbgi = get_dbg_info(&type->base.source_position); - ir_type *ir_type = new_d_type_array(id, 1, ir_element_type, dbgi); +static ir_type *create_array_type(array_type_t *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 *ir_type = 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); - if(type->size_constant) { + if (type->size_constant) { int n_elements = type->size; set_array_bounds_int(ir_type, 0, 0, n_elements); size_t elemsize = get_type_size_bytes(ir_element_type); - if(elemsize % align > 0) { + if (elemsize % align > 0) { elemsize += align - (elemsize % align); } set_type_size_bytes(ir_type, n_elements * elemsize); @@ -411,7 +474,8 @@ 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; @@ -430,11 +494,8 @@ 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(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; @@ -446,7 +507,8 @@ 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; @@ -465,12 +527,8 @@ 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(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; @@ -479,16 +537,18 @@ static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp, static ir_type *create_bitfield_type(bitfield_type_t *const type) { type_t *base = skip_typeref(type->base_type); - assert(base->kind == TYPE_ATOMIC); + assert(base->kind == TYPE_ATOMIC || base->kind == TYPE_ENUM); ir_type *irbase = get_ir_type(base); - unsigned size = fold_constant(type->size); + unsigned size = type->bit_size; assert(!is_type_float(base)); - if(is_type_signed(base)) { - return get_signed_int_type_for_bit_size(irbase, size); + if (is_type_signed(base)) { + 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); } } @@ -501,189 +561,85 @@ 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) { - declaration_t *declaration = type->declaration; - declaration_kind_t kind = (declaration_kind_t)declaration->declaration_kind; - - if(kind == DECLARATION_KIND_COMPOUND_TYPE_COMPLETE - || (kind == DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE - && incomplete)) - return declaration->v.irtype; - - size_t align_all = 1; - size_t offset = 0; - size_t bit_offset = 0; - size_t size = 0; + compound_t *compound = type->compound; - if(irtype == NULL) { - symbol_t *symbol = declaration->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(&type->base.source_position); + if (compound->irtype != NULL && (compound->irtype_complete || incomplete)) { + return compound->irtype; + } + symbol_t *symbol = compound->base.symbol; + ident *id; + if (symbol != NULL) { + id = new_id_from_str(symbol->string); + } else { if (is_union) { - irtype = new_d_type_union(id, dbgi); + id = id_unique("__anonymous_union.%u"); } else { - irtype = new_d_type_struct(id, dbgi); + id = id_unique("__anonymous_struct.%u"); } + } - declaration->declaration_kind - = DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE; - declaration->v.irtype = irtype; - //type->base.firm_type = 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); } - if(incomplete) - return irtype; + compound->irtype_complete = false; + compound->irtype = irtype; - declaration->declaration_kind = DECLARATION_KIND_COMPOUND_TYPE_COMPLETE; + if (incomplete) + return irtype; - declaration_t *entry = declaration->scope.declarations; - for( ; entry != NULL; entry = entry->next) { - if(entry->namespc != NAMESPACE_NORMAL) - continue; + if (is_union) { + layout_union_type(type); + } else { + layout_struct_type(type); + } - size_t prev_offset = offset; + compound->irtype_complete = true; - symbol_t *symbol = entry->symbol; - type_t *entry_type = skip_typeref(entry->type); - dbg_info *dbgi = get_dbg_info(&entry->source_position); + entity_t *entry = compound->members.entities; + for ( ; entry != NULL; entry = entry->base.next) { + if (entry->kind != ENTITY_COMPOUND_MEMBER) + continue; + symbol_t *symbol = entry->base.symbol; + 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 = fold_constant(entry_type->bitfield.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->v.entity == NULL); - entry->v.entity = entity; + entry->compound_member.bit_offset); -finished_member: - if (is_union) { - size_t entry_size = offset - prev_offset; - if (entry_size > size) { - size = entry_size; - } - offset = 0; - bit_offset = 0; - } - } - - if (!is_union) { - size = offset; - } - - size_t misalign = offset % align_all; - if(misalign > 0 || bit_offset > 0) { - size += align_all - misalign; + assert(entry->declaration.kind == DECLARATION_KIND_UNKNOWN); + entry->declaration.kind = DECLARATION_KIND_COMPOUND_MEMBER; + entry->compound_member.entity = entity; } - if(outer_offset != NULL) { - if (!is_union) { - *outer_offset = offset; - } else { - *outer_offset += size; - } - - if (align_all > *outer_align) { - if(align_all % *outer_align != 0) { - panic("uneven alignments not supported yet"); - } - *outer_align = align_all; - } - } else { - set_type_alignment_bytes(irtype, align_all); - set_type_size_bytes(irtype, size); - set_type_state(irtype, layout_fixed); - } + set_type_alignment_bytes(irtype, compound->alignment); + set_type_size_bytes(irtype, compound->size); + set_type_state(irtype, layout_fixed); return irtype; } @@ -692,18 +648,20 @@ 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); - declaration_t *declaration = type->declaration->next; - for (; declaration != NULL; declaration = declaration->next) { - if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY) - break; + bool constant_folding_old = constant_folding; + constant_folding = true; - declaration->declaration_kind = DECLARATION_KIND_ENUM_ENTRY; + enum_t *enume = type->enume; + entity_t *entry = enume->base.next; + for (; entry != NULL; entry = entry->base.next) { + if (entry->kind != ENTITY_ENUM_VALUE) + break; - expression_t *const init = declaration->init.enum_value; + expression_t *const init = entry->enum_value.value; if (init != NULL) { ir_node *const cnst = expression_to_firm(init); if (!is_Const(cnst)) { @@ -711,11 +669,13 @@ static ir_type *create_enum_type(enum_type_t *const type) } tv_next = get_Const_tarval(cnst); } - declaration->v.enum_val = tv_next; + entry->enum_value.tv = tv_next; tv_next = tarval_add(tv_next, one); } - return ir_type_int; + constant_folding = constant_folding_old; + + return create_atomic_type(type->akind, (const type_t*) type); } static ir_type *get_ir_type_incomplete(type_t *type) @@ -730,18 +690,15 @@ 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); - break; + 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); } } -static ir_type *get_ir_type(type_t *type) +ir_type *get_ir_type(type_t *type) { assert(type != NULL); @@ -755,9 +712,11 @@ static ir_type *get_ir_type(type_t *type) ir_type *firm_type = NULL; switch (type->kind) { case TYPE_ERROR: - panic("error type occurred"); + /* Happens while constant folding, when there was an error */ + return create_atomic_type(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); @@ -766,21 +725,22 @@ static 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); break; + case TYPE_REFERENCE: + firm_type = create_reference_type(&type->reference); + break; case TYPE_ARRAY: 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); @@ -797,19 +757,19 @@ static ir_type *get_ir_type(type_t *type) case TYPE_INVALID: break; } - if(firm_type == NULL) + if (firm_type == NULL) panic("unknown type found"); type->base.firm_type = firm_type; return firm_type; } -static inline 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); /* firm doesn't report a mode for arrays somehow... */ - if(is_Array_type(irtype)) { + if (is_Array_type(irtype)) { return mode_P_data; } @@ -818,6 +778,16 @@ static inline ir_mode *get_ir_mode(type_t *type) return mode; } +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 */ @@ -894,207 +864,282 @@ 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 create_ld_ident_func create_ld_ident = create_name_linux_elf; + +void set_create_ld_ident(ident *(*func)(entity_t*)) +{ + create_ld_ident = func; +} /** - * Mangles an entity linker (ld) name for win32 usage. + * Handle GNU attributes for entities * - * @param ent the entity to be mangled - * @param declaration the declaration + * @param ent the entity + * @param decl the routine declaration */ -static ident *create_ld_ident_win32(ir_entity *ent, declaration_t *declaration) +static void handle_decl_modifiers(ir_entity *irentity, entity_t *entity) { - ident *id; + assert(is_declaration(entity)); + decl_modifiers_t modifiers = entity->declaration.modifiers; - if (is_Method_type(get_entity_type(ent))) - id = decorate_win32_c_fkt(ent, get_entity_ident(ent)); - else { - /* always add an underscore in win32 */ - id = mangle(id_underscore, get_entity_ident(ent)); + 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); + have_const_functions = true; + } } - - decl_modifiers_t decl_modifiers = declaration->decl_modifiers; - if (decl_modifiers & DM_DLLIMPORT) { - /* add prefix for imported symbols */ - id = mangle(id_imp, id); + if (modifiers & DM_USED) { + add_entity_linkage(irentity, IR_LINKAGE_HIDDEN_USER); + } + if (modifiers & DM_WEAK) { + add_entity_linkage(irentity, IR_LINKAGE_WEAK); } - return id; } -/** - * Mangles an entity linker (ld) name for Linux ELF usage. - * - * @param ent the entity to be mangled - * @param declaration the declaration - */ -static ident *create_ld_ident_linux_elf(ir_entity *entity, - declaration_t *declaration) +static bool is_main(entity_t *entity) { - (void) declaration; - return get_entity_ident(entity); -} + static symbol_t *sym_main = NULL; + if (sym_main == NULL) { + sym_main = symbol_table_insert("main"); + } -/** - * Mangles an entity linker (ld) name for Mach-O usage. - * - * @param ent the entity to be mangled - * @param declaration the declaration - */ -static ident *create_ld_ident_macho(ir_entity *ent, declaration_t *declaration) -{ - (void) declaration; - ident *id = mangle(id_underscore, get_entity_ident(ent)); - return id; -} + if (entity->base.symbol != sym_main) + return false; + /* must be in outermost scope */ + if (entity->base.parent_scope != ¤t_translation_unit->scope) + return false; -typedef ident* (*create_ld_ident_func)(ir_entity *entity, - declaration_t *declaration); -create_ld_ident_func create_ld_ident = create_ld_ident_linux_elf; + return true; +} /** * 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(declaration_t *declaration) +static ir_entity *get_function_entity(entity_t *entity, ir_type *owner_type) { - if(declaration->declaration_kind == DECLARATION_KIND_FUNCTION) - return declaration->v.entity; - assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN); + assert(entity->kind == ENTITY_FUNCTION); + 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)) { + /* force main to C linkage */ + type_t *type = entity->declaration.type; + assert(is_type_function(type)); + if (type->function.linkage != LINKAGE_C) { + type_t *new_type = duplicate_type(type); + new_type->function.linkage = LINKAGE_C; + type = identify_new_type(new_type); + entity->declaration.type = type; + } + } - symbol_t *symbol = declaration->symbol; + 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(declaration->type); - assert(is_Method_type(ir_type_method)); - - dbg_info *const dbgi = get_dbg_info(&declaration->source_position); - ir_entity *const entity = new_d_entity(global_type, id, ir_type_method, dbgi); - set_entity_ld_ident(entity, create_ld_ident(entity, declaration)); - if(declaration->storage_class == STORAGE_CLASS_STATIC && - declaration->init.statement == NULL) { - /* this entity was declared, but never defined */ - set_entity_peculiarity(entity, peculiarity_description); - } - if(declaration->storage_class == STORAGE_CLASS_STATIC - || declaration->is_inline) { - set_entity_visibility(entity, visibility_local); - } else if(declaration->init.statement != NULL) { - set_entity_visibility(entity, visibility_external_visible); + /* 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) == ir_visibility_external + && has_body) { + 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(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); + } } else { - set_entity_visibility(entity, visibility_external_allocated); + /* nested functions are always local */ + set_entity_visibility(irentity, ir_visibility_local); } - set_entity_allocation(entity, allocation_static); - - declaration->declaration_kind = DECLARATION_KIND_FUNCTION; - declaration->v.entity = entity; /* We should check for file scope here, but as long as we compile C only this is not needed. */ - if (! firm_opt.freestanding) { + 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; assert(rts_entities[rts_data[i].id] == NULL); - rts_entities[rts_data[i].id] = entity; + rts_entities[rts_data[i].id] = irentity; } } - return entity; + entitymap_insert(&entitymap, symbol, irentity); + +entity_created: + 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 mode the (reference) mode for the SymConst + * @param entity the entity */ -static ir_node *const_to_firm(const const_expression_t *cnst) +static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode, + 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, mode, tv); + assert(entity != NULL); + union symconst_symbol sym; + sym.entity_p = entity; + return new_d_SymConst(dbgi, mode, 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 || 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_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, mode, 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, mode, 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, mode_P_data, entity); } /** @@ -1110,14 +1155,13 @@ 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); @@ -1130,70 +1174,269 @@ 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])); - for(size_t i = 0; i < slen; ++i) { - tvs[i] = new_tarval_from_long(string[i], mode); + ir_initializer_t *initializer = create_initializer_compound(slen); + for (size_t i = 0; i < slen; ++i) { + 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_array_entity_values(entity, tvs, slen); - free(tvs); + set_entity_initializer(entity, initializer); return create_symconst(dbgi, mode_P_data, entity); } -/** - * Creates a SymConst node representing a string literal. - * - * @param literal the string literal - */ -static ir_node *string_literal_to_firm( - const string_literal_expression_t* literal) +static bool try_create_integer(literal_expression_t *literal, + type_t *type, unsigned char base) { - return string_to_firm(&literal->base.source_position, "Lstr.%u", - &literal->value); + const char *string = literal->value.begin; + size_t size = literal->value.size; + + assert(type->kind == TYPE_ATOMIC); + atomic_type_kind_t akind = type->atomic.akind; + + 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; } -/** - * Creates a SymConst node representing a wide string literal. - * - * @param literal the wide string literal - */ -static ir_node *wide_string_literal_to_firm( - const wide_string_literal_expression_t* const literal) +static void create_integer_tarval(literal_expression_t *literal) { - 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); + 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; } + } + } - 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); + 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; + } +} - ir_mode *const mode = get_type_mode(elem_type); +/** + * Creates a Const node representing a constant. + */ +static ir_node *literal_to_firm(const literal_expression_t *literal) +{ + 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; - const wchar_rep_t *const string = literal->value.begin; - const size_t slen = literal->value.size; + 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); - 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); + 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); - 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); + 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"); - set_array_entity_values(entity, tvs, slen); - free(tvs); +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); +} - return create_symconst(dbgi, mode_P_data, entity); +/* + * Allocate an area of size bytes aligned at alignment + * at a frame type. + */ +static ir_entity *alloc_trampoline(ir_type *frame_type, int size, unsigned alignment) +{ + static unsigned area_cnt = 0; + char buf[32]; + + ir_type *tp = new_type_array(1, ir_type_char); + set_array_bounds_int(tp, 0, 0, size); + set_type_alignment_bytes(tp, alignment); + + snprintf(buf, sizeof(buf), "trampolin%u", area_cnt++); + ident *name = new_id_from_str(buf); + ir_entity *area = new_entity(frame_type, name, tp); + + /* mark this entity as compiler generated */ + set_entity_compiler_generated(area, 1); + return area; +} + +/** + * Return a node representing a trampoline 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; + + if (current_trampolines != NULL) { + for (i = ARR_LEN(current_trampolines) - 1; i >= 0; --i) { + if (current_trampolines[i].function == entity) { + region = current_trampolines[i].region; + break; + } + } + } else { + current_trampolines = NEW_ARR_F(trampoline_region, 0); + } + ir_graph *irg = current_ir_graph; + if (region == NULL) { + /* create a new region */ + ir_type *frame_tp = get_irg_frame_type(irg); + trampoline_region reg; + reg.function = entity; + + reg.region = alloc_trampoline(frame_tp, + be_params->trampoline_size, + be_params->trampoline_align); + ARR_APP1(trampoline_region, current_trampolines, reg); + region = reg.region; + } + return new_d_simpleSel(dbgi, get_irg_no_mem(irg), get_irg_frame(irg), + region); +} + +/** + * Creates a 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, mode, entity); + in[2] = get_irg_frame(current_ir_graph); + + 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) { @@ -1204,22 +1447,25 @@ 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) { - 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) { @@ -1241,23 +1487,22 @@ static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node) return new_d_strictConv(dbgi, node, mode); } +/** + * Returns the address of a global variable. + * + * @param dbgi debug info + * @param variable the variable + */ static ir_node *get_global_var_address(dbg_info *const dbgi, - const declaration_t *const decl) -{ - assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE); - - ir_entity *const entity = decl->v.entity; - switch ((storage_class_tag_t)decl->storage_class) { - case STORAGE_CLASS_THREAD: - case STORAGE_CLASS_THREAD_EXTERN: - case STORAGE_CLASS_THREAD_STATIC: { - 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, entity); - } - - default: - return create_symconst(dbgi, mode_P_data, entity); + const variable_t *const variable) +{ + ir_entity *const irentity = variable->v.entity; + if (variable->thread_local) { + ir_node *const no_mem = new_NoMem(); + ir_node *const tls = get_irg_tls(current_ir_graph); + return new_d_simpleSel(dbgi, no_mem, tls, irentity); + } else { + return create_symconst(dbgi, mode_P_data, irentity); } } @@ -1269,77 +1514,118 @@ 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); + if (owner == current_outer_frame || owner == current_outer_value_type) { + assert(current_static_link != NULL); + return current_static_link; } else { - assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg)))); - return get_irg_value_param_base(irg); + return get_irg_frame(irg); } } -static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode) +/** + * Keep all memory edges of the given block. + */ +static void keep_all_memory(ir_node *block) { - ir_mode *value_mode = get_irn_mode(value); + ir_node *old = get_cur_block(); - if (value_mode == dest_mode || is_Bad(value)) - return value; + set_cur_block(block); + keep_alive(get_store()); + /* TODO: keep all memory edges from restricted pointers */ + set_cur_block(old); +} - if(dest_mode == mode_b) { - ir_node *zero = new_Const(value_mode, get_mode_null(value_mode)); - ir_node *cmp = new_d_Cmp(dbgi, value, zero); - ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg); - return proj; - } +static ir_node *reference_expression_enum_value_to_firm( + const reference_expression_t *ref) +{ + entity_t *entity = ref->entity; + type_t *type = skip_typeref(entity->enum_value.enum_type); + /* make sure the type is constructed */ + (void) get_ir_type(type); - return new_d_Conv(dbgi, value, dest_mode); + return new_Const(entity->enum_value.tv); } static ir_node *reference_expression_to_firm(const reference_expression_t *ref) { - dbg_info *dbgi = get_dbg_info(&ref->base.source_position); - declaration_t *declaration = ref->declaration; - type_t *type = skip_typeref(declaration->type); + dbg_info *dbgi = get_dbg_info(&ref->base.source_position); + entity_t *entity = ref->entity; + assert(is_declaration(entity)); + type_t *type = skip_typeref(entity->declaration.type); /* make sure the type is constructed */ (void) get_ir_type(type); - switch((declaration_kind_t) declaration->declaration_kind) { - case DECLARATION_KIND_TYPE: - case DECLARATION_KIND_UNKNOWN: - break; + 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) { + if (warning.other) { + warningf(&ref->base.source_position, + "taking address of builtin '%Y'", + ref->entity->base.symbol); + } + + /* simply create a NULL pointer */ + ir_mode *mode = get_ir_mode_arithmetic(type_void_ptr); + ir_node *res = new_Const(get_mode_null(mode)); - case DECLARATION_KIND_ENUM_ENTRY: { - ir_mode *const mode = get_ir_mode(type); - return new_Const(mode, declaration->v.enum_val); + 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(declaration->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_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, declaration->v.entity); + ir_mode *const mode = get_ir_mode_storage(type); + return create_symconst(dbgi, mode, entity->function.irentity); + } + case DECLARATION_KIND_INNER_FUNCTION: { + ir_mode *const mode = get_ir_mode_storage(type); + if (!entity->function.goto_to_outer && !entity->function.need_closure) { + /* inner function not using the closure */ + return create_symconst(dbgi, mode, entity->function.irentity); + } else { + /* 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, declaration); - return deref_address(dbgi, declaration->type, addr); + const variable_t *variable = &entity->variable; + ir_node *const addr = get_global_var_address(dbgi, variable); + return deref_address(dbgi, variable->base.type, addr); } case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: { - ir_entity *entity = declaration->v.entity; - ir_node *frame = get_local_frame(entity); - ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity); - return deref_address(dbgi, declaration->type, sel); + ir_entity *irentity = entity->variable.v.entity; + ir_node *frame = get_local_frame(irentity); + ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity); + return deref_address(dbgi, entity->declaration.type, sel); + } + case DECLARATION_KIND_PARAMETER_ENTITY: { + ir_entity *irentity = entity->parameter.v.entity; + ir_node *frame = get_local_frame(irentity); + ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity); + return deref_address(dbgi, entity->declaration.type, sel); } case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY: - return declaration->v.vla_base; + return entity->variable.v.vla_base; - case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE: - case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE: case DECLARATION_KIND_COMPOUND_MEMBER: - case DECLARATION_KIND_LABEL_BLOCK: panic("not implemented reference type"); } @@ -1348,50 +1634,131 @@ static ir_node *reference_expression_to_firm(const reference_expression_t *ref) static ir_node *reference_addr(const reference_expression_t *ref) { - dbg_info *dbgi = get_dbg_info(&ref->base.source_position); - declaration_t *declaration = ref->declaration; + dbg_info *dbgi = get_dbg_info(&ref->base.source_position); + entity_t *entity = ref->entity; + assert(is_declaration(entity)); - switch((declaration_kind_t) declaration->declaration_kind) { - case DECLARATION_KIND_TYPE: + switch((declaration_kind_t) entity->declaration.kind) { case DECLARATION_KIND_UNKNOWN: break; + case DECLARATION_KIND_PARAMETER: case DECLARATION_KIND_LOCAL_VARIABLE: /* you can store to a local variable (so we don't panic but return NULL * as an indicator for no real address) */ return NULL; - case DECLARATION_KIND_FUNCTION: { - type_t *const type = skip_typeref(ref->base.type); - ir_mode *const mode = get_ir_mode(type); - return create_symconst(dbgi, mode, declaration->v.entity); - } case DECLARATION_KIND_GLOBAL_VARIABLE: { - ir_node *const addr = get_global_var_address(dbgi, declaration); + ir_node *const addr = get_global_var_address(dbgi, &entity->variable); return addr; } case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: { - ir_entity *entity = declaration->v.entity; - ir_node *frame = get_local_frame(entity); - ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity); + ir_entity *irentity = entity->variable.v.entity; + ir_node *frame = get_local_frame(irentity); + ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity); + + return sel; + } + case DECLARATION_KIND_PARAMETER_ENTITY: { + ir_entity *irentity = entity->parameter.v.entity; + ir_node *frame = get_local_frame(irentity); + ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity); return sel; } case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY: - return declaration->v.vla_base; + return entity->variable.v.vla_base; + + case DECLARATION_KIND_FUNCTION: { + type_t *const type = skip_typeref(entity->declaration.type); + ir_mode *const mode = get_ir_mode_storage(type); + return create_symconst(dbgi, mode, entity->function.irentity); + } - case DECLARATION_KIND_ENUM_ENTRY: - panic("trying to reference enum entry"); + case DECLARATION_KIND_INNER_FUNCTION: { + type_t *const type = skip_typeref(entity->declaration.type); + ir_mode *const mode = get_ir_mode_storage(type); + if (!entity->function.goto_to_outer && !entity->function.need_closure) { + /* inner function not using the closure */ + return create_symconst(dbgi, mode, entity->function.irentity); + } else { + /* need trampoline here */ + return create_trampoline(dbgi, mode, entity->function.irentity); + } + } - case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE: - case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE: case DECLARATION_KIND_COMPOUND_MEMBER: - case DECLARATION_KIND_LABEL_BLOCK: panic("not implemented reference type"); } 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. */ @@ -1399,18 +1766,17 @@ 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 *function_type = skip_typeref(type->pointer.points_to); - symbol_t *symbol = builtin->symbol; + type_t *function_type = skip_typeref(type->pointer.points_to); - switch(symbol->ID) { - case T___builtin_alloca: { - if(call->arguments == NULL || call->arguments->next != NULL) { + 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"); } expression_t *argument = call->arguments->expression; @@ -1425,63 +1791,217 @@ static ir_node *process_builtin_call(const call_expression_t *call) return res; } - case T___builtin_huge_val: { - ir_mode *mode = get_ir_mode(function_type->function.return_type); - tarval *tv = get_mode_infinite(mode); - ir_node *res = new_d_Const(dbgi, mode, 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_nand: { + 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, mode, 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_va_end: + case bk_gnu_builtin_expect: { + expression_t *argument = call->arguments->expression; + return _expression_to_firm(argument); + } + 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"); } } /** * Transform a call expression. - * Handles some special cases, like alloca() calls, which must be resolved BEFORE the inlines runs. - * Inlining routines calling alloca() is dangerous, 176.gcc for instance might allocate 2GB instead of - * 256 MB if alloca is not handled right... + * Handles some special cases, like alloca() calls, which must be resolved + * BEFORE the inlines runs. Inlining routines calling alloca() is dangerous, + * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not + * handled right... */ -static ir_node *call_expression_to_firm(const call_expression_t *call) +static ir_node *call_expression_to_firm(const call_expression_t *const call) { + dbg_info *const dbgi = get_dbg_info(&call->base.source_position); assert(get_cur_block() != NULL); 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; - declaration_t *declaration = ref->declaration; + if (function->kind == EXPR_REFERENCE) { + const reference_expression_t *ref = &function->reference; + entity_t *entity = ref->entity; + + if (entity->kind == ENTITY_FUNCTION) { + ir_entity *irentity = entity->function.irentity; + if (irentity == NULL) + irentity = get_function_entity(entity, NULL); + + if (irentity == NULL && entity->function.btk != bk_none) { + return process_builtin_call(call); + } - if((declaration_kind_t)declaration->declaration_kind == DECLARATION_KIND_FUNCTION) { - if (declaration->v.entity == rts_entities[rts_alloca]) { +#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_node *size = expression_to_firm(argument); + ir_mode *mode = get_ir_mode_arithmetic(type_size_t); - ir_node *store = get_store(); - dbg_info *dbgi = get_dbg_info(&call->base.source_position); - ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type, - stack_alloc); - ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M); + 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); + ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res); return res; } +#endif } } ir_node *callee = expression_to_firm(function); @@ -1493,23 +2013,20 @@ static ir_node *call_expression_to_firm(const call_expression_t *call) assert(is_type_function(points_to)); function_type_t *function_type = &points_to->function; - dbg_info *dbgi = get_dbg_info(&call->base.source_position); - int n_parameters = 0; ir_type *ir_method_type = get_ir_type((type_t*) function_type); ir_type *new_method_type = NULL; - if(function_type->variadic || function_type->unspecified_parameters) { + if (function_type->variadic || function_type->unspecified_parameters) { const call_argument_t *argument = call->arguments; - for( ; argument != NULL; argument = argument->next) { + for ( ; argument != NULL; argument = argument->next) { ++n_parameters; } /* 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, @@ -1517,12 +2034,12 @@ static ir_node *call_expression_to_firm(const call_expression_t *call) set_method_variadicity(new_method_type, get_method_variadicity(ir_method_type)); - for(int i = 0; i < n_res; ++i) { + for (int i = 0; i < n_res; ++i) { set_method_res_type(new_method_type, i, get_method_res_type(ir_method_type, i)); } argument = call->arguments; - for(int i = 0; i < n_parameters; ++i, argument = argument->next) { + for (int i = 0; i < n_parameters; ++i, argument = argument->next) { expression_t *expression = argument->expression; ir_type *irtype = get_ir_type(expression->base.type); set_method_param_type(new_method_type, i, irtype); @@ -1535,11 +2052,16 @@ static ir_node *call_expression_to_firm(const call_expression_t *call) ir_node *in[n_parameters]; const call_argument_t *argument = call->arguments; - for(int n = 0; n < n_parameters; ++n) { + for (int n = 0; n < n_parameters; ++n) { expression_t *expression = argument->expression; ir_node *arg_node = expression_to_firm(expression); - arg_node = do_strict_conv(dbgi, arg_node); + type_t *type = skip_typeref(expression->base.type); + if (!is_type_compound(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; @@ -1549,21 +2071,34 @@ 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; - if(is_type_scalar(return_type)) { - mode = get_ir_mode(return_type); + if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) { + ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result); + + if (is_type_scalar(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 && + function->reference.entity->declaration.modifiers & DM_NORETURN) { + /* A dead end: Keep the Call and the Block. Also place all further + * nodes into a new and unreachable block. */ + keep_alive(node); + keep_alive(get_cur_block()); + ir_node *block = new_Block(0, NULL); + set_cur_block(block); } return result; @@ -1573,95 +2108,97 @@ static void statement_to_firm(statement_t *statement); static ir_node *compound_statement_to_firm(compound_statement_t *compound); static ir_node *expression_to_addr(const expression_t *expression); -static void create_condition_evaluation(const expression_t *expression, - ir_node *true_block, - ir_node *false_block); +static ir_node *create_condition_evaluation(const expression_t *expression, + ir_node *true_block, + ir_node *false_block); static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type, ir_node *value) { - 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); + if (is_type_scalar(type)) { + 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) - 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 && size >= 0); + assert(offset >= 0); + assert(size >= 0); assert(offset + size <= mode_size); - if(size == mode_size) { + if (size == mode_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(const select_expression_t *expression, - ir_node *addr, ir_node *value) +static ir_node *bitfield_store_to_firm(dbg_info *dbgi, + ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile) { - type_t *type = expression->base.type; - ir_mode *mode = get_ir_mode(type); - - assert(get_irn_mode(value) == mode || is_Bad(value)); + ir_type *entity_type = get_entity_type(entity); + ir_type *base_type = get_primitive_base_type(entity_type); + assert(base_type != NULL); + ir_mode *mode = get_type_mode(base_type); - dbg_info *dbgi = get_dbg_info(&expression->base.source_position); + value = create_conv(dbgi, value, mode); /* kill upper bits of value and shift to right position */ - ir_entity *entity = expression->compound_entry->v.entity; - int bitoffset = get_entity_offset_bits_remainder(entity); - ir_type *entity_type = get_entity_type(entity); - int bitsize = get_mode_size_bits(get_type_mode(entity_type)); + 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, mode, 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, mode_uint, 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, mode, 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(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) { - set_Load_volatility(load, volatility_is_volatile); - set_Store_volatility(store, volatility_is_volatile); - } + return value_masked; } static ir_node *bitfield_extract_to_firm(const select_expression_t *expression, @@ -1669,9 +2206,9 @@ 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); @@ -1680,22 +2217,23 @@ static ir_node *bitfield_extract_to_firm(const select_expression_t *expression, set_store(load_mem); /* kill upper bits */ - ir_entity *entity = expression->compound_entry->v.entity; + assert(expression->compound_entry->kind == ENTITY_COMPOUND_MEMBER); + ir_entity *entity = expression->compound_entry->compound_member.entity; int bitoffset = get_entity_offset_bits_remainder(entity); ir_type *entity_type = get_entity_type(entity); 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_node *countl = new_d_Const(dbgi, mode_uint, tvl); + 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_node *countr = new_d_Const(dbgi, mode_uint, tvr); + 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)) { + if (mode_is_signed(mode)) { shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int); } else { shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int); @@ -1704,39 +2242,66 @@ static ir_node *bitfield_extract_to_firm(const select_expression_t *expression, return create_conv(dbgi, shiftr, mode); } -static void set_value_for_expression_addr(const expression_t *expression, - ir_node *value, ir_node *addr) +/* make sure the selected compound type is constructed */ +static void construct_select_compound(const select_expression_t *expression) +{ + type_t *type = skip_typeref(expression->compound->base.type); + if (is_type_pointer(type)) { + type = type->pointer.points_to; + } + (void) get_ir_type(type); +} + +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; - declaration_t *declaration = ref->declaration; - assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN); - if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) { - set_value(declaration->v.value_number, value); - return; + entity_t *entity = ref->entity; + assert(is_declaration(entity)); + assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN); + if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) { + set_value(entity->variable.v.value_number, value); + return value; + } else if (entity->declaration.kind == DECLARATION_KIND_PARAMETER) { + set_value(entity->parameter.v.value_number, value); + return value; } } if (addr == NULL) addr = expression_to_addr(expression); - - type_t *type = skip_typeref(expression->base.type); + assert(addr != NULL); if (expression->kind == EXPR_SELECT) { const select_expression_t *select = &expression->select; - declaration_t *declaration = select->compound_entry; - if (declaration->type->kind == TYPE_BITFIELD) { - bitfield_store_to_firm(select, addr, value); - return; + construct_select_compound(select); + + entity_t *entity = select->compound_entry; + assert(entity->kind == ENTITY_COMPOUND_MEMBER); + if (entity->declaration.type->kind == TYPE_BITFIELD) { + ir_entity *irentity = entity->compound_member.entity; + bool set_volatile + = select->base.type->base.qualifiers & TYPE_QUALIFIER_VOLATILE; + 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, @@ -1751,12 +2316,25 @@ static ir_node *get_value_from_lvalue(const expression_t *expression, if (expression->kind == EXPR_REFERENCE) { const reference_expression_t *ref = &expression->reference; - declaration_t *declaration = ref->declaration; - assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN); - if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) { + entity_t *entity = ref->entity; + 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); + 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(declaration->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)); } } @@ -1765,7 +2343,8 @@ static ir_node *get_value_from_lvalue(const expression_t *expression, ir_node *value; if (expression->kind == EXPR_SELECT && - expression->select.compound_entry->type->kind == TYPE_BITFIELD){ + expression->select.compound_entry->declaration.type->kind == TYPE_BITFIELD){ + construct_select_compound(&expression->select); value = bitfield_extract_to_firm(&expression->select, addr); } else { value = deref_address(dbgi, expression->base.type, addr); @@ -1783,15 +2362,15 @@ 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)) { + 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(mode, get_mode_one(mode)); + offset = new_Const(get_mode_one(mode)); } ir_node *result; @@ -1826,27 +2405,29 @@ static bool is_local_variable(expression_t *expression) { if (expression->kind != EXPR_REFERENCE) return false; - reference_expression_t *ref_expr = &expression->reference; - declaration_t *declaration = ref_expr->declaration; - return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE; + reference_expression_t *ref_expr = &expression->reference; + entity_t *entity = ref_expr->entity; + if (entity->kind != ENTITY_VARIABLE) + return false; + assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN); + 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; @@ -1869,50 +2450,48 @@ static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type) static ir_node *handle_assume_compare(dbg_info *dbi, const binary_expression_t *expression) { - expression_t *op1 = expression->left; - expression_t *op2 = expression->right; - declaration_t *var2, *var = NULL; - ir_node *res = NULL; - pn_Cmp cmp_val; - - cmp_val = get_pnc(expression->base.kind, op1->base.type); + expression_t *op1 = expression->left; + expression_t *op2 = expression->right; + entity_t *var2, *var = NULL; + ir_node *res = NULL; + ir_relation relation = get_relation(expression->base.kind); if (is_local_variable(op1) && is_local_variable(op2)) { - var = op1->reference.declaration; - var2 = op2->reference.declaration; + var = op1->reference.entity; + var2 = op2->reference.entity; - type_t *const type = skip_typeref(var->type); - ir_mode *const mode = get_ir_mode(type); + type_t *const type = skip_typeref(var->declaration.type); + ir_mode *const mode = get_ir_mode_storage(type); - ir_node *const irn1 = get_value(var->v.value_number, mode); - ir_node *const irn2 = get_value(var2->v.value_number, mode); + 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)); - set_value(var2->v.value_number, res); + 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); - set_value(var->v.value_number, res); + 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)) { - var = op1->reference.declaration; + 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); - var = op2->reference.declaration; + } 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->type); - ir_mode *const mode = get_ir_mode(type); + type_t *const type = skip_typeref(var->declaration.type); + ir_mode *const mode = get_ir_mode_storage(type); - res = get_value(var->v.value_number, mode); - res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val); - set_value(var->v.value_number, res); + res = get_value(var->variable.v.value_number, mode); + res = new_d_Confirm(dbi, res, expression_to_firm(con), relation); + set_value(var->variable.v.value_number, res); } return res; } @@ -1923,7 +2502,8 @@ 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: @@ -1937,12 +2517,61 @@ 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 = get_global_var_address(dbgi, from_var); + ir_node *const base = deref_address(dbgi, from_var->base.type, addr); + value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(from_type)); + } + if (to_var != NULL) { + ir_node *const addr = get_global_var_address(dbgi, to_var); + ir_node *const base = deref_address(dbgi, to_var->base.type, addr); + value_node = new_d_Sub(dbgi, value_node, base, mode); + } + } + } + + if (is_type_atomic(type, ATOMIC_TYPE_BOOL)) { + /* bool adjustments (we save a mode_Bu, but have to temporarily + * convert to mode_b so we only get a 0/1 value */ + value_node = create_conv(dbgi, value_node, mode_b); + } + + ir_mode *mode_arith = get_ir_mode_arithmetic(type); + ir_node *node = create_conv(dbgi, value_node, mode); + node = do_strict_conv(dbgi, node); + node = create_conv(dbgi, node, mode_arith); + + return node; +} + static ir_node *unary_expression_to_firm(const unary_expression_t *expression) { dbg_info *dbgi = get_dbg_info(&expression->base.source_position); type_t *type = skip_typeref(expression->base.type); - if(expression->base.kind == EXPR_UNARY_TAKE_ADDRESS) + if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS) return expression_to_addr(expression->value); const expression_t *value = expression->value; @@ -1950,14 +2579,14 @@ 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: { @@ -1970,6 +2599,14 @@ 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 = get_global_var_address(dbgi, base_var); + ir_node *const base = deref_address(dbgi, base_var->base.type, addr); + value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(value_type)); + } type_t *points_to = value_type->pointer.points_to; return deref_address(dbgi, points_to, value_node); } @@ -1978,33 +2615,14 @@ 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; @@ -2016,31 +2634,24 @@ static ir_node *unary_expression_to_firm(const unary_expression_t *expression) * produces a 0/1 depending of the value of a mode_b node */ static ir_node *produce_condition_result(const expression_t *expression, - dbg_info *dbgi) + ir_mode *mode, dbg_info *dbgi) { - ir_mode *mode = get_ir_mode(expression->base.type); - ir_node *cur_block = get_cur_block(); - - ir_node *one_block = new_immBlock(); - ir_node *one = new_Const(mode, get_mode_one(mode)); - ir_node *jmp_one = new_d_Jmp(dbgi); - - ir_node *zero_block = new_immBlock(); - ir_node *zero = new_Const(mode, 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 *common_block = new_immBlock(); - add_immBlock_pred(common_block, jmp_one); - add_immBlock_pred(common_block, jmp_zero); - mature_immBlock(common_block); + 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; } @@ -2048,17 +2659,14 @@ 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_arithmetic(type_ptrdiff_t); + assert(is_type_pointer(type)); pointer_type_t *const pointer_type = &type->pointer; - type_t *const points_to = pointer_type->points_to; - const unsigned elem_size = get_type_size_const(points_to); - - assert(elem_size >= 1); - if (elem_size == 1) - return value; - - value = create_conv(dbgi, value, mode_int); - ir_node *const cnst = new_Const_long(mode_int, (long)elem_size); - ir_node *const mul = new_d_Mul(dbgi, value, cnst, mode_int); + type_t *const points_to = skip_typeref(pointer_type->points_to); + ir_node * elem_size = get_type_size_node(points_to); + elem_size = create_conv(dbgi, elem_size, mode); + value = create_conv(dbgi, value, mode); + ir_node *const mul = new_d_Mul(dbgi, value, elem_size, mode); return mul; } @@ -2084,8 +2692,8 @@ 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(); @@ -2097,7 +2705,7 @@ 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; @@ -2106,18 +2714,18 @@ 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_irn_mode(right); + mode = get_ir_mode_arithmetic(type_right); left = create_conv(dbgi, left, mode); break; } @@ -2154,15 +2762,9 @@ 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: @@ -2182,23 +2784,33 @@ 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; - if((ekind == EXPR_BINARY_LOGICAL_AND && val != 0) - || (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) { - return expression_to_firm(expression->right); + assert(ekind == EXPR_BINARY_LOGICAL_AND || ekind == EXPR_BINARY_LOGICAL_OR); + if (ekind == EXPR_BINARY_LOGICAL_AND) { + if (!val) { + return new_Const(get_mode_null(mode)); + } } else { - assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0) - || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0)); - return new_Const(mode, 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, dbgi); + return produce_condition_result((const expression_t*) expression, mode, + dbgi); } typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left, @@ -2208,17 +2820,21 @@ 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 *right = expression_to_firm(expression->right); 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; } @@ -2239,19 +2855,25 @@ 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(expression->left, right); + 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: @@ -2288,8 +2910,6 @@ static ir_node *binary_expression_to_firm(const binary_expression_t *expression) case EXPR_BINARY_SHIFTLEFT_ASSIGN: case EXPR_BINARY_SHIFTRIGHT_ASSIGN: return create_assign_binop(expression); - case EXPR_BINARY_BUILTIN_EXPECT: - return _expression_to_firm(expression->left); default: panic("TODO binexpr type"); } @@ -2297,28 +2917,12 @@ static ir_node *binary_expression_to_firm(const binary_expression_t *expression) static ir_node *array_access_addr(const array_access_expression_t *expression) { - dbg_info *dbgi = get_dbg_info(&expression->base.source_position); - ir_node *base_addr = expression_to_firm(expression->array_ref); - ir_node *offset = expression_to_firm(expression->index); - - type_t *offset_type = skip_typeref(expression->index->base.type); - ir_mode *mode; - if (is_type_signed(offset_type)) { - mode = get_ir_mode(type_ssize_t); - } else { - mode = get_ir_mode(type_size_t); - } - offset = create_conv(dbgi, offset, mode); - - type_t *ref_type = skip_typeref(expression->array_ref->base.type); - assert(is_type_pointer(ref_type)); - pointer_type_t *pointer_type = &ref_type->pointer; - - ir_node *elem_size_const = get_type_size(pointer_type->points_to); - elem_size_const = create_conv(dbgi, elem_size_const, mode); - ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const, - mode); - ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data); + dbg_info *dbgi = get_dbg_info(&expression->base.source_position); + ir_node *base_addr = expression_to_firm(expression->array_ref); + ir_node *offset = expression_to_firm(expression->index); + type_t *ref_type = skip_typeref(expression->array_ref->base.type); + ir_node *real_offset = adjust_for_pointer_arithmetic(dbgi, offset, ref_type); + ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data); return result; } @@ -2341,35 +2945,35 @@ static long get_offsetof_offset(const offsetof_expression_t *expression) long offset = 0; designator_t *designator = expression->designator; - for( ; designator != NULL; designator = designator->next) { + for ( ; designator != NULL; designator = designator->next) { type_t *type = skip_typeref(orig_type); /* be sure the type is constructed */ (void) get_ir_type(type); - if(designator->symbol != NULL) { + if (designator->symbol != NULL) { assert(is_type_compound(type)); symbol_t *symbol = designator->symbol; - declaration_t *declaration = type->compound.declaration; - declaration_t *iter = declaration->scope.declarations; - for( ; iter != NULL; iter = iter->next) { - if(iter->symbol == symbol) { + compound_t *compound = type->compound.compound; + entity_t *iter = compound->members.entities; + for ( ; iter != NULL; iter = iter->base.next) { + if (iter->base.symbol == symbol) { break; } } assert(iter != NULL); - assert(iter->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER); - offset += get_entity_offset(iter->v.entity); + assert(iter->kind == ENTITY_COMPOUND_MEMBER); + assert(iter->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER); + offset += get_entity_offset(iter->compound_member.entity); - orig_type = iter->type; + orig_type = iter->declaration.type; } else { expression_t *array_index = designator->array_index; assert(designator->array_index != NULL); assert(is_type_array(type)); - assert(is_type_valid(array_index->base.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); @@ -2385,12 +2989,12 @@ 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, mode, tv); + return new_d_Const(dbgi, tv); } static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi, @@ -2410,14 +3014,12 @@ 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; } @@ -2427,20 +3029,43 @@ 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_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); } - - type = skip_typeref(type); - /* § 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */ - if(is_type_array(type) && type->array.is_vla - && 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(type); + 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; +} + +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; } /** @@ -2448,107 +3073,139 @@ 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 declaration_t *declaration = expr_is_variable(tp_expression); - if (declaration != NULL) { - /* TODO: get the alignment of this variable. */ + 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) { + 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); + } -static bool constant_folding; + 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))); + bool constant_folding_old = constant_folding; constant_folding = true; 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"); - } - - tarval *tv = get_Const_tarval(cnst); - if(!tarval_is_long(tv)) { - panic("result of constant folding is not integer\n"); + if (!is_Const(cnst)) { + panic("couldn't fold constant"); } 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"); + } + 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(val) { - return expression_to_firm(expression->true_expression); + 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) + true_expression = expression->condition; + return expression_to_firm(true_expression); } else { return expression_to_firm(expression->false_expression); } } - ir_node *cur_block = get_cur_block(); - - /* create the true block */ - ir_node *true_block = new_immBlock(); - - ir_node *true_val = expression_to_firm(expression->true_expression); - 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); - create_condition_evaluation(expression->condition, true_block, false_block); + 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 *common_block = new_immBlock(); - add_immBlock_pred(common_block, true_jmp); - add_immBlock_pred(common_block, false_jmp); - mature_immBlock(common_block); + 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; } @@ -2560,24 +3217,24 @@ static ir_node *select_addr(const select_expression_t *expression) { dbg_info *dbgi = get_dbg_info(&expression->base.source_position); - ir_node *compound_addr = expression_to_firm(expression->compound); - - /* make sure the type is constructed */ - type_t *type = skip_typeref(expression->compound->base.type); - if (is_type_pointer(type)) { - type = type->pointer.points_to; - } - (void) get_ir_type(type); - - declaration_t *entry = expression->compound_entry; - assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER); - ir_entity *entity = entry->v.entity; + construct_select_compound(expression); - assert(entity != NULL); + ir_node *compound_addr = expression_to_firm(expression->compound); - ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity); + entity_t *entry = expression->compound_entry; + assert(entry->kind == ENTITY_COMPOUND_MEMBER); + assert(entry->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER); - return sel; + if (constant_folding) { + ir_mode *mode = get_irn_mode(compound_addr); + /* FIXME: here, we need an integer mode with the same number of bits as mode */ + ir_node *ofs = new_Const_long(mode_uint, entry->compound_member.offset); + return new_d_Add(dbgi, compound_addr, ofs, mode); + } else { + ir_entity *irentity = entry->compound_member.entity; + assert(irentity != NULL); + return new_d_simpleSel(dbgi, new_NoMem(), compound_addr, irentity); + } } static ir_node *select_to_firm(const select_expression_t *expression) @@ -2588,8 +3245,9 @@ static ir_node *select_to_firm(const select_expression_t *expression) (const expression_t*) expression); type = skip_typeref(type); - declaration_t *entry = expression->compound_entry; - type_t *entry_type = skip_typeref(entry->type); + entity_t *entry = expression->compound_entry; + assert(entry->kind == ENTITY_COMPOUND_MEMBER); + type_t *entry_type = skip_typeref(entry->declaration.type); if (entry_type->kind == TYPE_BITFIELD) { return bitfield_extract_to_firm(expression, addr); @@ -2625,75 +3283,82 @@ typedef enum gcc_type_class static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr) { - const type_t *const type = skip_typeref(expr->type_expression->base.type); + type_t *type = expr->type_expression->base.type; + /* FIXME gcc returns different values depending on whether compiling C or C++ + * e.g. int x[10] is pointer_type_class in C, but array_type_class in C++ */ gcc_type_class tc; - switch (type->kind) - { - case TYPE_ATOMIC: { - const atomic_type_t *const atomic_type = &type->atomic; - switch (atomic_type->akind) { - /* should not be reached */ - case ATOMIC_TYPE_INVALID: - tc = no_type_class; - goto make_const; - - /* gcc cannot do that */ - case ATOMIC_TYPE_VOID: - tc = void_type_class; - goto make_const; - - case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */ - case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */ - case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */ - case ATOMIC_TYPE_SHORT: - case ATOMIC_TYPE_USHORT: - case ATOMIC_TYPE_INT: - case ATOMIC_TYPE_UINT: - case ATOMIC_TYPE_LONG: - case ATOMIC_TYPE_ULONG: - case ATOMIC_TYPE_LONGLONG: - case ATOMIC_TYPE_ULONGLONG: - case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */ - tc = integer_type_class; - goto make_const; - - case ATOMIC_TYPE_FLOAT: - case ATOMIC_TYPE_DOUBLE: - case ATOMIC_TYPE_LONG_DOUBLE: - tc = real_type_class; - goto make_const; + for (;;) { + type = skip_typeref(type); + switch (type->kind) { + case TYPE_ATOMIC: { + const atomic_type_t *const atomic_type = &type->atomic; + switch (atomic_type->akind) { + /* should not be reached */ + case ATOMIC_TYPE_INVALID: + tc = no_type_class; + goto make_const; + + /* gcc cannot do that */ + case ATOMIC_TYPE_VOID: + tc = void_type_class; + goto make_const; + + case ATOMIC_TYPE_WCHAR_T: /* gcc handles this as integer */ + case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */ + case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */ + case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */ + case ATOMIC_TYPE_SHORT: + case ATOMIC_TYPE_USHORT: + case ATOMIC_TYPE_INT: + case ATOMIC_TYPE_UINT: + case ATOMIC_TYPE_LONG: + case ATOMIC_TYPE_ULONG: + case ATOMIC_TYPE_LONGLONG: + case ATOMIC_TYPE_ULONGLONG: + case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */ + tc = integer_type_class; + goto make_const; + + case ATOMIC_TYPE_FLOAT: + case ATOMIC_TYPE_DOUBLE: + case ATOMIC_TYPE_LONG_DOUBLE: + tc = real_type_class; + goto make_const; + } + panic("Unexpected atomic type in classify_type_to_firm()."); } - panic("Unexpected atomic type in classify_type_to_firm()."); - } - case TYPE_COMPLEX: tc = complex_type_class; goto make_const; - case TYPE_IMAGINARY: tc = complex_type_class; goto make_const; - case TYPE_BITFIELD: tc = integer_type_class; goto make_const; - case TYPE_ARRAY: /* gcc handles this as pointer */ - case TYPE_FUNCTION: /* gcc handles this as pointer */ - case TYPE_POINTER: tc = pointer_type_class; goto make_const; - case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const; - case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const; - - /* gcc handles this as integer */ - case TYPE_ENUM: tc = integer_type_class; goto make_const; - - case TYPE_BUILTIN: - /* typedef/typeof should be skipped already */ - case TYPE_TYPEDEF: - case TYPE_TYPEOF: - case TYPE_INVALID: - case TYPE_ERROR: - break; + case TYPE_COMPLEX: tc = complex_type_class; goto make_const; + case TYPE_IMAGINARY: tc = complex_type_class; goto make_const; + case TYPE_BITFIELD: tc = integer_type_class; goto make_const; + case TYPE_ARRAY: /* gcc handles this as pointer */ + case TYPE_FUNCTION: /* gcc handles this as pointer */ + case TYPE_POINTER: tc = pointer_type_class; goto make_const; + case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const; + case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const; + + /* gcc handles this as integer */ + case TYPE_ENUM: tc = integer_type_class; goto make_const; + + /* 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: + case TYPE_INVALID: + case TYPE_ERROR: + break; + } + panic("unexpected TYPE classify_type_to_firm()."); } - panic("unexpected TYPE classify_type_to_firm()."); -make_const: ; - dbg_info *const dbgi = get_dbg_info(&expr->base.source_position); - ir_mode *const mode = mode_int; - tarval *const tv = new_tarval_from_long(tc, mode); - return new_d_Const(dbgi, mode, tv); +make_const:; + 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); } static ir_node *function_name_to_firm( @@ -2705,7 +3370,7 @@ static ir_node *function_name_to_firm( case FUNCNAME_FUNCDNAME: if (current_function_name == NULL) { const source_position_t *const src_pos = &expr->base.source_position; - const char *const name = current_function_decl->symbol->string; + const char *name = current_function_entity->base.symbol->string; const string_t string = { name, strlen(name) + 1 }; current_function_name = string_to_firm(src_pos, "__func__.%u", &string); } @@ -2734,17 +3399,24 @@ static ir_node *statement_expression_to_firm(const statement_expression_t *expr) static ir_node *va_start_expression_to_firm( const va_start_expression_t *const expr) { - ir_type *const method_type = get_ir_type(current_function_decl->type); + type_t *const type = current_function_entity->declaration.type; + 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->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; @@ -2759,14 +3431,29 @@ 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); @@ -2779,17 +3466,18 @@ static ir_node *dereference_addr(const unary_expression_t *const expression) static ir_node *expression_to_addr(const expression_t *expression) { switch(expression->kind) { - case EXPR_REFERENCE: - return reference_addr(&expression->reference); case EXPR_ARRAY_ACCESS: return array_access_addr(&expression->array_access); - case EXPR_SELECT: - return select_addr(&expression->select); case EXPR_CALL: return call_expression_to_firm(&expression->call); - case EXPR_UNARY_DEREFERENCE: { + case EXPR_COMPOUND_LITERAL: + return compound_literal_to_firm(&expression->compound_literal); + case EXPR_REFERENCE: + return reference_addr(&expression->reference); + case EXPR_SELECT: + return select_addr(&expression->select); + case EXPR_UNARY_DEREFERENCE: return dereference_addr(&expression->unary); - } default: break; } @@ -2799,24 +3487,54 @@ 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; + 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); +} - if (is_constant_expression(expression->value)) { - v = 1; - } else { - v = 0; - } - return new_Const_long(mode, v); +static ir_node *builtin_types_compatible_to_firm( + const builtin_types_compatible_expression_t *expression) +{ + 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 *builtin_prefetch_to_firm( - const builtin_prefetch_expression_t *expression) +static ir_node *get_label_block(label_t *label) { - ir_node *adr = expression_to_firm(expression->adr); - /* no Firm support for prefetch yet */ - (void) adr; - return NULL; + if (label->block != NULL) + return label->block; + + /* beware: might be called from create initializer with current_ir_graph + * set to const_code_irg. */ + ir_graph *rem = current_ir_graph; + current_ir_graph = current_function; + + ir_node *block = new_immBlock(); + + label->block = block; + + ARR_APP1(label_t *, all_labels, label); + + current_ir_graph = rem; + return block; +} + +/** + * Pointer to a label. This is used for the + * GNU address-of-label extension. + */ +static ir_node *label_address_to_firm(const label_address_expression_t *label) +{ + 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); + + symconst_symbol value; + value.entity_p = entity; + return new_d_SymConst(dbgi, mode_P_code, value, symconst_addr_ent); } /** @@ -2833,19 +3551,18 @@ 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); + switch (expression->kind) { + 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: + return reference_expression_enum_value_to_firm(&expression->reference); case EXPR_CALL: return call_expression_to_firm(&expression->call); EXPR_UNARY_CASES @@ -2872,16 +3589,18 @@ 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: - panic("unimplemented expression found"); + 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: return compound_literal_to_firm(&expression->compound_literal); + case EXPR_LABEL_ADDRESS: + return label_address_to_firm(&expression->label_address); case EXPR_UNKNOWN: case EXPR_INVALID: @@ -2890,6 +3609,25 @@ 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_REFERENCE) + return false; + reference_expression_t *ref = &function->reference; + if (ref->entity->kind != ENTITY_FUNCTION || + ref->entity->function.btk != bk_gnu_builtin_expect) + return false; + + return true; +} + static bool produces_mode_b(const expression_t *expression) { switch (expression->kind) { @@ -2908,8 +3646,12 @@ static bool produces_mode_b(const expression_t *expression) case EXPR_UNARY_NOT: return true; - case EXPR_BINARY_BUILTIN_EXPECT: - return produces_mode_b(expression->binary.left); + case EXPR_CALL: + if (is_builtin_expect(expression)) { + expression_t *argument = expression->call.arguments->expression; + return produces_mode_b(argument); + } + return false; case EXPR_BINARY_COMMA: return produces_mode_b(expression->binary.right); @@ -2926,125 +3668,118 @@ 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); - return produce_condition_result(expression, dbgi); -} - -static ir_node *expression_to_modeb(const expression_t *expression) -{ - ir_node *res = _expression_to_firm(expression); - res = create_conv(NULL, res, mode_b); - - return res; + ir_mode *mode = get_ir_mode_arithmetic(expression->base.type); + return produce_condition_result(expression, mode, dbgi); } /** * create a short-circuit expression evaluation that tries to construct * efficient control flow structures for &&, || and ! expressions */ -static void create_condition_evaluation(const expression_t *expression, - ir_node *true_block, - ir_node *false_block) +static ir_node *create_condition_evaluation(const expression_t *expression, + ir_node *true_block, + ir_node *false_block) { switch(expression->kind) { case EXPR_UNARY_NOT: { const unary_expression_t *unary_expression = &expression->unary; create_condition_evaluation(unary_expression->value, false_block, true_block); - return; + return NULL; } case EXPR_BINARY_LOGICAL_AND: { const binary_expression_t *binary_expression = &expression->binary; - 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); set_cur_block(extra_block); create_condition_evaluation(binary_expression->right, true_block, false_block); - return; + return NULL; } case EXPR_BINARY_LOGICAL_OR: { const binary_expression_t *binary_expression = &expression->binary; - 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); set_cur_block(extra_block); create_condition_evaluation(binary_expression->right, true_block, false_block); - return; + return NULL; } default: break; } dbg_info *dbgi = get_dbg_info(&expression->base.source_position); - ir_node *condition = expression_to_modeb(expression); + ir_node *cond_expr = _expression_to_firm(expression); + ir_node *condition = create_conv(dbgi, cond_expr, mode_b); ir_node *cond = new_d_Cond(dbgi, condition); ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true); ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false); /* set branch prediction info based on __builtin_expect */ - if(expression->kind == EXPR_BINARY_BUILTIN_EXPECT) { - long cnst = fold_constant(expression->binary.right); - cond_jmp_predicate pred; - - if(cnst == 0) { - pred = COND_JMP_PRED_FALSE; - } else { - pred = COND_JMP_PRED_TRUE; + if (is_builtin_expect(expression) && is_Cond(cond)) { + call_argument_t *argument = expression->call.arguments->next; + if (is_constant_expression(argument->expression) == EXPR_CLASS_CONSTANT) { + bool cnst = fold_constant_to_bool(argument->expression); + cond_jmp_predicate pred; + + if (cnst == false) { + pred = COND_JMP_PRED_FALSE; + } else { + pred = COND_JMP_PRED_TRUE; + } + set_Cond_jmp_pred(cond, pred); } - set_Cond_jmp_pred(cond, pred); } add_immBlock_pred(true_block, true_proj); add_immBlock_pred(false_block, false_proj); set_cur_block(NULL); + return cond_expr; } +static void create_variable_entity(entity_t *variable, + declaration_kind_t declaration_kind, + ir_type *parent_type) +{ + assert(variable->kind == ENTITY_VARIABLE); + type_t *type = skip_typeref(variable->declaration.type); + 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; -static void create_declaration_entity(declaration_t *declaration, - declaration_kind_t declaration_kind, - ir_type *parent_type) -{ - ident *const id = new_id_from_str(declaration->symbol->string); - type_t *const type = skip_typeref(declaration->type); - ir_type *const irtype = get_ir_type(type); - dbg_info *const dbgi = get_dbg_info(&declaration->source_position); - ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi); + set_entity_alignment(irentity, alignment); + + handle_decl_modifiers(irentity, variable); - declaration->declaration_kind = (unsigned char) declaration_kind; - declaration->v.entity = entity; - set_entity_variability(entity, variability_uninitialized); - set_entity_ld_ident(entity, create_ld_ident(entity, declaration)); - if(parent_type == get_tls_type()) - set_entity_allocation(entity, allocation_automatic); - else if(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE) - set_entity_allocation(entity, allocation_static); + variable->declaration.kind = (unsigned char) declaration_kind; + variable->variable.v.entity = irentity; + set_entity_ld_ident(irentity, create_ld_ident(variable)); - if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) { - set_entity_volatility(entity, volatility_is_volatile); + if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) { + set_entity_volatility(irentity, volatility_is_volatile); } } @@ -3054,7 +3789,7 @@ struct type_path_entry_t { type_t *type; ir_initializer_t *initializer; size_t index; - declaration_t *compound_entry; + entity_t *compound_entry; }; typedef struct type_path_t type_path_t; @@ -3068,14 +3803,14 @@ static __attribute__((unused)) void debug_print_type_path(const type_path_t *pat { size_t len = ARR_LEN(path->path); - for(size_t i = 0; i < len; ++i) { + for (size_t i = 0; i < len; ++i) { const type_path_entry_t *entry = & path->path[i]; type_t *type = skip_typeref(entry->type); - if(is_type_compound(type)) { - fprintf(stderr, ".%s", entry->compound_entry->symbol->string); - } else if(is_type_array(type)) { - fprintf(stderr, "[%zd]", entry->index); + if (is_type_compound(type)) { + fprintf(stderr, ".%s", entry->compound_entry->base.symbol->string); + } else if (is_type_array(type)) { + fprintf(stderr, "[%u]", (unsigned) entry->index); } else { fprintf(stderr, "-INVALID-"); } @@ -3102,17 +3837,16 @@ static type_path_entry_t *append_to_type_path(type_path_t *path) return result; } -static size_t get_compound_size(const compound_type_t *type) +static size_t get_compound_member_count(const compound_type_t *type) { - declaration_t *declaration = type->declaration; - declaration_t *member = declaration->scope.declarations; - size_t size = 0; - for( ; member != NULL; member = member->next) { - ++size; + compound_t *compound = type->compound; + size_t n_members = 0; + entity_t *member = compound->members.entities; + for ( ; member != NULL; member = member->base.next) { + ++n_members; } - /* TODO: cache results? */ - return size; + return n_members; } static ir_initializer_t *get_initializer_entry(type_path_t *path) @@ -3122,7 +3856,7 @@ static ir_initializer_t *get_initializer_entry(type_path_t *path) assert(is_type_compound(top_type) || is_type_array(top_type)); - if(ARR_LEN(path->path) == 0) { + if (ARR_LEN(path->path) == 0) { return NULL; } else { type_path_entry_t *top = get_type_path_top(path); @@ -3145,15 +3879,17 @@ static void descend_into_subtype(type_path_t *path) size_t len; - if(is_type_compound(top_type)) { - declaration_t *declaration = top_type->compound.declaration; - declaration_t *entry = declaration->scope.declarations; + if (is_type_compound(top_type)) { + compound_t *compound = top_type->compound.compound; + entity_t *entry = compound->members.entities; top->compound_entry = entry; top->index = 0; - len = get_compound_size(&top_type->compound); - if(entry != NULL) - path->top_type = entry->type; + len = get_compound_member_count(&top_type->compound); + if (entry != NULL) { + assert(entry->kind == ENTITY_COMPOUND_MEMBER); + path->top_type = entry->declaration.type; + } } else { assert(is_type_array(top_type)); assert(top_type->array.size > 0); @@ -3162,13 +3898,13 @@ static void descend_into_subtype(type_path_t *path) path->top_type = top_type->array.element_type; len = top_type->array.size; } - if(initializer == NULL + if (initializer == NULL || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) { initializer = create_initializer_compound(len); /* we have to set the entry at the 2nd latest path entry... */ size_t path_len = ARR_LEN(path->path); assert(path_len >= 1); - if(path_len > 1) { + if (path_len > 1) { type_path_entry_t *entry = & path->path[path_len-2]; ir_initializer_t *tinitializer = entry->initializer; set_initializer_compound_value(tinitializer, entry->index, @@ -3193,39 +3929,60 @@ static void walk_designator(type_path_t *path, const designator_t *designator) /* designators start at current object type */ ARR_RESIZE(type_path_entry_t, path->path, 1); - for( ; designator != NULL; designator = designator->next) { + for ( ; designator != NULL; designator = designator->next) { type_path_entry_t *top = get_type_path_top(path); type_t *orig_type = top->type; type_t *type = skip_typeref(orig_type); - if(designator->symbol != NULL) { + if (designator->symbol != NULL) { assert(is_type_compound(type)); size_t index = 0; symbol_t *symbol = designator->symbol; - declaration_t *declaration = type->compound.declaration; - declaration_t *iter = declaration->scope.declarations; - for( ; iter != NULL; iter = iter->next, ++index) { - if(iter->symbol == symbol) { + compound_t *compound = type->compound.compound; + entity_t *iter = compound->members.entities; + for ( ; iter != NULL; iter = iter->base.next, ++index) { + if (iter->base.symbol == symbol) { + assert(iter->kind == ENTITY_COMPOUND_MEMBER); break; } } 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; - orig_type = iter->type; + orig_type = iter->declaration.type; } else { expression_t *array_index = designator->array_index; assert(designator->array_index != NULL); assert(is_type_array(type)); - assert(is_type_valid(array_index->base.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 == 1) { + if (type->array.size_constant) { long array_size = type->array.size; assert(index < array_size); } @@ -3237,7 +3994,7 @@ static void walk_designator(type_path_t *path, const designator_t *designator) } path->top_type = orig_type; - if(designator->next != NULL) { + if (designator->next != NULL) { descend_into_subtype(path); } } @@ -3247,41 +4004,42 @@ static void walk_designator(type_path_t *path, const designator_t *designator) static void advance_current_object(type_path_t *path) { - if(path->invalid) { + if (path->invalid) { /* TODO: handle this... */ panic("invalid initializer in ast2firm (excessive elements)"); - return; } type_path_entry_t *top = get_type_path_top(path); type_t *type = skip_typeref(top->type); - if(is_type_union(type)) { + if (is_type_union(type)) { + /* only the first element is initialized in unions */ top->compound_entry = NULL; - } else if(is_type_struct(type)) { - declaration_t *entry = top->compound_entry; + } else if (is_type_struct(type)) { + entity_t *entry = top->compound_entry; top->index++; - entry = entry->next; + entry = entry->base.next; top->compound_entry = entry; - if(entry != NULL) { - path->top_type = entry->type; + if (entry != NULL) { + assert(entry->kind == ENTITY_COMPOUND_MEMBER); + path->top_type = entry->declaration.type; return; } } else { assert(is_type_array(type)); top->index++; - if(!type->array.size_constant || top->index < type->array.size) { + if (!type->array.size_constant || top->index < type->array.size) { return; } } /* 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) { + if (len > 1) { ascend_from_subtype(path); advance_current_object(path); } else { @@ -3299,10 +4057,38 @@ 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); } +/** test wether type can be initialized by a string constant */ +static bool is_string_type(type_t *type) +{ + type_t *inner; + if (is_type_pointer(type)) { + inner = skip_typeref(type->pointer.points_to); + } else if(is_type_array(type)) { + inner = skip_typeref(type->array.element_type); + } else { + return false; + } + + return is_type_integer(inner); +} + static ir_initializer_t *create_ir_initializer_list( const initializer_list_t *initializer, type_t *type) { @@ -3313,22 +4099,34 @@ static ir_initializer_t *create_ir_initializer_list( descend_into_subtype(&path); - for(size_t i = 0; i < initializer->len; ++i) { + for (size_t i = 0; i < initializer->len; ++i) { const initializer_t *sub_initializer = initializer->initializers[i]; - if(sub_initializer->kind == INITIALIZER_DESIGNATOR) { + if (sub_initializer->kind == INITIALIZER_DESIGNATOR) { walk_designator(&path, sub_initializer->designator.designator); continue; } - if(sub_initializer->kind == INITIALIZER_VALUE) { + if (sub_initializer->kind == INITIALIZER_VALUE) { /* we might have to descend into types until we're at a scalar * type */ while(true) { type_t *orig_top_type = path.top_type; type_t *top_type = skip_typeref(orig_top_type); - if(is_type_scalar(top_type)) + if (is_type_scalar(top_type)) + break; + descend_into_subtype(&path); + } + } else if (sub_initializer->kind == INITIALIZER_STRING + || sub_initializer->kind == INITIALIZER_WIDE_STRING) { + /* we might have to descend into types until we're at a scalar + * type */ + while (true) { + type_t *orig_top_type = path.top_type; + type_t *top_type = skip_typeref(orig_top_type); + + if (is_string_type(top_type)) break; descend_into_subtype(&path); } @@ -3360,19 +4158,20 @@ static ir_initializer_t *create_ir_initializer_string( type = skip_typeref(type); size_t string_len = initializer->string.size; - assert(type->kind == TYPE_ARRAY && type->array.size_constant); + assert(type->kind == TYPE_ARRAY); + assert(type->array.size_constant); size_t len = type->array.size; ir_initializer_t *irinitializer = create_initializer_compound(len); const char *string = initializer->string.begin; - ir_mode *mode = get_type_mode(ir_type_const_char); + ir_mode *mode = get_ir_mode_storage(type->array.element_type); - for(size_t i = 0; i < len; ++i) { + for (size_t i = 0; i < len; ++i) { char c = 0; - if(i < string_len) + if (i < string_len) c = string[i]; - tarval *tv = new_tarval_from_long(c, mode); + 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); @@ -3384,20 +4183,21 @@ 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 && type->array.size_constant); + 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; - if(i < string_len) { - c = string[i]; + for (size_t i = 0; i < len; ++i) { + utf32 c = 0; + if (i < string_len) { + 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); @@ -3429,120 +4229,143 @@ static ir_initializer_t *create_ir_initializer( panic("unknown initializer"); } -static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi, +/** 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) { - 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, mode, 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)); + /* for unions we must NOT do anything for null initializers */ + ir_type *owner = get_entity_owner(entity); + if (is_Union_type(owner)) { + return; + } - 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); + 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; + } - 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, mode_uint, index_tv); - ir_node *in[1] = { cnst }; - irtype = get_array_element_type(type); - addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity); - } else { - ir_entity *member = get_compound_member(type, i); - - irtype = get_entity_type(member); - addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member); - } + ir_mode *value_mode = get_type_mode(ent_type); + ir_node *node = new_Const(get_mode_null(value_mode)); - create_dynamic_null_initializer(irtype, dbgi, addr); - } + /* 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_type *type, dbg_info *dbgi, ir_node *base_addr) + 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); - assert(get_type_mode(type) == mode); + ir_node *node = get_initializer_const_value(initializer); + ir_type *ent_type = get_entity_type(entity); - /* TODO: bitfields... */ + /* 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; + } + + 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, mode, tv); - assert(get_type_mode(type) == mode); + 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) && + get_primitive_base_type(ent_type) != NULL) { + bitfield_store_to_firm(dbgi, entity, base_addr, cnst, false); + return; + } - /* TODO: bitfields... */ + 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)) { + if (is_Array_type(type)) { assert(has_array_upper_bound(type, 0)); n_members = get_array_upper_bound_int(type, 0); } else { n_members = get_compound_n_members(type); } - if(get_initializer_compound_n_entries(initializer) + if (get_initializer_compound_n_entries(initializer) != (unsigned) n_members) panic("initializer doesn't match compound type"); - for(int i = 0; i < n_members; ++i) { - ir_node *addr; - ir_type *irtype; - if(is_Array_type(type)) { - ir_entity *entity = get_array_element_entity(type); - tarval *index_tv = new_tarval_from_long(i, mode_uint); - ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv); + for (int i = 0; i < n_members; ++i) { + ir_node *addr; + ir_type *irtype; + ir_entity *sub_entity; + if (is_Array_type(type)) { + 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); - addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity); + irtype = get_array_element_type(type); + sub_entity = get_array_element_entity(type); + addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, + sub_entity); } else { - ir_entity *member = get_compound_member(type, i); - - irtype = get_entity_type(member); - addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member); + sub_entity = get_compound_member(type, i); + irtype = get_entity_type(sub_entity); + addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, + sub_entity); } ir_initializer_t *sub_init = get_initializer_compound_value(initializer, i); - create_dynamic_initializer_sub(sub_init, irtype, dbgi, addr); + create_dynamic_initializer_sub(sub_init, sub_entity, irtype, dbgi, + addr); } return; } @@ -3554,11 +4377,11 @@ 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); - create_dynamic_initializer_sub(initializer, type, dbgi, base_addr); + create_dynamic_initializer_sub(initializer, entity, type, dbgi, base_addr); } static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi, @@ -3569,7 +4392,7 @@ static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi, ir_node *frame = get_irg_frame(current_ir_graph); ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity); - if(initializer->kind == INITIALIZER_VALUE) { + if (initializer->kind == INITIALIZER_VALUE) { initializer_value_t *initializer_value = &initializer->value; ir_node *value = expression_to_firm(initializer_value->value); @@ -3578,9 +4401,14 @@ 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; @@ -3602,162 +4430,187 @@ 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 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); } -static void create_initializer_local_variable_entity(declaration_t *declaration) +static void create_initializer_local_variable_entity(entity_t *entity) { - initializer_t *initializer = declaration->init.initializer; - dbg_info *dbgi = get_dbg_info(&declaration->source_position); - ir_entity *entity = declaration->v.entity; - type_t *type = declaration->type; - create_local_initializer(initializer, dbgi, entity, type); + assert(entity->kind == ENTITY_VARIABLE); + initializer_t *initializer = entity->variable.initializer; + 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); } -static void create_declaration_initializer(declaration_t *declaration) +static void create_variable_initializer(entity_t *entity) { - initializer_t *initializer = declaration->init.initializer; - if(initializer == NULL) + assert(entity->kind == ENTITY_VARIABLE); + initializer_t *initializer = entity->variable.initializer; + if (initializer == NULL) return; declaration_kind_t declaration_kind - = (declaration_kind_t) declaration->declaration_kind; - if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) { - create_initializer_local_variable_entity(declaration); + = (declaration_kind_t) entity->declaration.kind; + if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) { + create_initializer_local_variable_entity(entity); return; } - if(initializer->kind == INITIALIZER_VALUE) { + type_t *type = entity->declaration.type; + type_qualifiers_t tq = get_type_qualifier(type, true); + + if (initializer->kind == INITIALIZER_VALUE) { initializer_value_t *initializer_value = &initializer->value; - dbg_info *dbgi - = get_dbg_info(&declaration->source_position); + dbg_info *dbgi = get_dbg_info(&entity->base.source_position); ir_node *value = expression_to_firm(initializer_value->value); + + type_t *type = initializer_value->value->base.type; + ir_mode *mode = get_ir_mode_storage(type); + value = create_conv(dbgi, value, mode); value = do_strict_conv(dbgi, value); - if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) { - set_value(declaration->v.value_number, value); + if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) { + set_value(entity->variable.v.value_number, value); } else { assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE); - ir_entity *entity = declaration->v.entity; + ir_entity *irentity = entity->variable.v.entity; - set_entity_variability(entity, variability_initialized); - set_atomic_ent_value(entity, value); + 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); } } else { - assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY - || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE); + assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY || + declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE); - ir_entity *entity = declaration->v.entity; + ir_entity *irentity = entity->variable.v.entity; ir_initializer_t *irinitializer - = create_ir_initializer(initializer, declaration->type); + = create_ir_initializer(initializer, type); - set_entity_variability(entity, variability_initialized); - set_entity_initializer(entity, irinitializer); + if (tq & TYPE_QUALIFIER_CONST) { + add_entity_linkage(irentity, IR_LINKAGE_CONSTANT); + } + set_entity_initializer(irentity, irinitializer); } } -static void create_variable_length_array(declaration_t *declaration) +static void create_variable_length_array(entity_t *entity) +{ + assert(entity->kind == ENTITY_VARIABLE); + assert(entity->variable.initializer == NULL); + + entity->declaration.kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY; + entity->variable.v.vla_base = NULL; + + /* TODO: record VLA somewhere so we create the free node when we leave + * it's scope */ +} + +static void allocate_variable_length_array(entity_t *entity) { - dbg_info *dbgi = get_dbg_info(&declaration->source_position); - type_t *type = declaration->type; - ir_node *mem = get_store(); + assert(entity->kind == ENTITY_VARIABLE); + assert(entity->variable.initializer == NULL); + assert(get_cur_block() != NULL); + + 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); ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M); ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res); set_store(proj_m); - /* initializers are not allowed for VLAs */ - assert(declaration->init.initializer == NULL); - - declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY; - declaration->v.vla_base = addr; - - /* TODO: record VLA somewhere so we create the free node when we leave - * it's scope */ + assert(entity->declaration.kind == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY); + entity->variable.v.vla_base = addr; } /** * Creates a Firm local variable from a declaration. */ -static void create_local_variable(declaration_t *declaration) +static void create_local_variable(entity_t *entity) { - assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN); + assert(entity->kind == ENTITY_VARIABLE); + assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN); - bool needs_entity = declaration->address_taken; - type_t *type = skip_typeref(declaration->type); + bool needs_entity = entity->variable.address_taken; + type_t *type = skip_typeref(entity->declaration.type); /* is it a variable length array? */ - if(is_type_array(type) && !type->array.size_constant) { - create_variable_length_array(declaration); + if (is_type_array(type) && !type->array.size_constant) { + create_variable_length_array(entity); return; - } else if(is_type_array(type) || is_type_compound(type)) { + } else if (is_type_array(type) || is_type_compound(type)) { needs_entity = true; - } else if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) { + } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) { needs_entity = true; } - if(needs_entity) { + if (needs_entity) { ir_type *frame_type = get_irg_frame_type(current_ir_graph); - create_declaration_entity(declaration, - DECLARATION_KIND_LOCAL_VARIABLE_ENTITY, - frame_type); + create_variable_entity(entity, + DECLARATION_KIND_LOCAL_VARIABLE_ENTITY, + frame_type); } else { - declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE; - declaration->v.value_number = next_value_number_function; - set_irg_loc_description(current_ir_graph, next_value_number_function, declaration); + entity->declaration.kind = DECLARATION_KIND_LOCAL_VARIABLE; + entity->variable.v.value_number = next_value_number_function; + set_irg_loc_description(current_ir_graph, next_value_number_function, + entity); ++next_value_number_function; } } -static void create_local_static_variable(declaration_t *declaration) +static void create_local_static_variable(entity_t *entity) { - assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN); + assert(entity->kind == ENTITY_VARIABLE); + assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN); - type_t *const type = skip_typeref(declaration->type); - ir_type *const global_type = get_glob_type(); - ir_type *const irtype = get_ir_type(type); - dbg_info *const dbgi = get_dbg_info(&declaration->source_position); + 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); - size_t l = strlen(declaration->symbol->string); + size_t l = strlen(entity->base.symbol->string); char buf[l + sizeof(".%u")]; - snprintf(buf, sizeof(buf), "%s.%%u", declaration->symbol->string); - ident *const id = id_unique(buf); + snprintf(buf, sizeof(buf), "%s.%%u", entity->base.symbol->string); + ident *const id = id_unique(buf); + ir_entity *const irentity = new_d_entity(var_type, id, irtype, dbgi); - ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi); - - if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) { - set_entity_volatility(entity, volatility_is_volatile); + if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) { + set_entity_volatility(irentity, volatility_is_volatile); } - declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE; - declaration->v.entity = entity; - set_entity_ld_ident(entity, create_ld_ident(entity, declaration)); - set_entity_variability(entity, variability_uninitialized); - set_entity_visibility(entity, visibility_local); - set_entity_allocation(entity, allocation_static); + entity->declaration.kind = DECLARATION_KIND_GLOBAL_VARIABLE; + entity->variable.v.entity = irentity; + + set_entity_ld_ident(irentity, id); + set_entity_visibility(irentity, ir_visibility_local); ir_graph *const old_current_ir_graph = current_ir_graph; current_ir_graph = get_const_code_irg(); - create_declaration_initializer(declaration); + create_variable_initializer(entity); assert(current_ir_graph == get_const_code_irg()); current_ir_graph = old_current_ir_graph; @@ -3767,25 +4620,31 @@ static void create_local_static_variable(declaration_t *declaration) static void return_statement_to_firm(return_statement_t *statement) { - if(get_cur_block() == NULL) + if (get_cur_block() == NULL) return; dbg_info *dbgi = get_dbg_info(&statement->base.source_position); - ir_type *func_irtype = get_ir_type(current_function_decl->type); + 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) { + if (get_method_n_ress(func_irtype) > 0) { ir_type *res_type = get_method_res_type(func_irtype, 0); - if(statement->value != NULL) { + if (statement->value != NULL) { ir_node *node = expression_to_firm(statement->value); - node = do_strict_conv(dbgi, node); + if (!is_compound_type(res_type)) { + type_t *type = statement->value->base.type; + ir_mode *mode = get_ir_mode_storage(type); + node = create_conv(dbgi, node, mode); + node = do_strict_conv(dbgi, node); + } in[0] = node; } else { ir_mode *mode; - if(is_compound_type(res_type)) { + if (is_compound_type(res_type)) { mode = mode_P_data; } else { mode = get_type_mode(res_type); @@ -3795,7 +4654,7 @@ static void return_statement_to_firm(return_statement_t *statement) in_len = 1; } else { /* build return_value for its side effects */ - if(statement->value != NULL) { + if (statement->value != NULL) { expression_to_firm(statement->value); } in_len = 0; @@ -3812,7 +4671,7 @@ static void return_statement_to_firm(return_statement_t *statement) static ir_node *expression_statement_to_firm(expression_statement_t *statement) { - if(get_cur_block() == NULL) + if (get_cur_block() == NULL) return NULL; return expression_to_firm(statement->expression); @@ -3820,15 +4679,18 @@ static ir_node *expression_statement_to_firm(expression_statement_t *statement) static ir_node *compound_statement_to_firm(compound_statement_t *compound) { - declaration_t *declaration = compound->scope.declarations; - for( ; declaration != NULL; declaration = declaration->next) { - create_local_declaration(declaration); + entity_t *entity = compound->scope.entities; + for ( ; entity != NULL; entity = entity->base.next) { + if (!is_declaration(entity)) + continue; + + create_local_declaration(entity); } ir_node *result = NULL; statement_t *statement = compound->statements; - for( ; statement != NULL; statement = statement->base.next) { - if(statement->base.next == NULL + for ( ; statement != NULL; statement = statement->base.next) { + if (statement->base.next == NULL && statement->kind == STATEMENT_EXPRESSION) { result = expression_statement_to_firm( &statement->expression); @@ -3840,401 +4702,387 @@ static ir_node *compound_statement_to_firm(compound_statement_t *compound) return result; } -static void create_global_variable(declaration_t *declaration) +static void create_global_variable(entity_t *entity) { - ir_visibility vis; - ir_type *var_type; - switch ((storage_class_tag_t)declaration->storage_class) { - case STORAGE_CLASS_STATIC: - vis = visibility_local; - goto global_var; - - case STORAGE_CLASS_EXTERN: - vis = visibility_external_allocated; - goto global_var; - - case STORAGE_CLASS_NONE: - vis = visibility_external_visible; - goto global_var; - - case STORAGE_CLASS_THREAD: - vis = visibility_external_visible; - goto tls_var; + ir_linkage linkage = IR_LINKAGE_DEFAULT; + ir_visibility visibility = ir_visibility_default; + ir_entity *irentity; + assert(entity->kind == ENTITY_VARIABLE); - case STORAGE_CLASS_THREAD_EXTERN: - vis = visibility_external_allocated; - goto tls_var; - - case STORAGE_CLASS_THREAD_STATIC: - vis = visibility_local; - goto tls_var; - -tls_var: - var_type = get_tls_type(); - goto create_var; - -global_var: - var_type = get_glob_type(); - goto create_var; - -create_var: - create_declaration_entity(declaration, - DECLARATION_KIND_GLOBAL_VARIABLE, - var_type); - set_entity_visibility(declaration->v.entity, vis); - - return; + switch ((storage_class_tag_t)entity->declaration.storage_class) { + 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"); + } - case STORAGE_CLASS_TYPEDEF: - case STORAGE_CLASS_AUTO: - case STORAGE_CLASS_REGISTER: - case STORAGE_CLASS_ENUM_ENTRY: - break; + 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; } - panic("Invalid storage class for global variable"); + 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(declaration_t *declaration) +static void create_local_declaration(entity_t *entity) { - if (declaration->namespc != NAMESPACE_NORMAL) - return; + assert(is_declaration(entity)); + /* construct type */ - (void) get_ir_type(declaration->type); - if (declaration->symbol == NULL) { + (void) get_ir_type(entity->declaration.type); + if (entity->base.symbol == NULL) { return; } - type_t *type = skip_typeref(declaration->type); - - switch ((storage_class_tag_t) declaration->storage_class) { + switch ((storage_class_tag_t) entity->declaration.storage_class) { case STORAGE_CLASS_STATIC: - create_local_static_variable(declaration); + if (entity->kind == ENTITY_FUNCTION) { + (void)get_function_entity(entity, NULL); + } else { + create_local_static_variable(entity); + } return; case STORAGE_CLASS_EXTERN: - create_global_variable(declaration); - create_declaration_initializer(declaration); + if (entity->kind == ENTITY_FUNCTION) { + assert(entity->function.statement == NULL); + (void)get_function_entity(entity, NULL); + } else { + create_global_variable(entity); + create_variable_initializer(entity); + } return; case STORAGE_CLASS_NONE: case STORAGE_CLASS_AUTO: case STORAGE_CLASS_REGISTER: - if(is_type_function(type)) { - if(declaration->init.statement != NULL) { - panic("nested functions not supported yet"); + if (entity->kind == ENTITY_FUNCTION) { + if (entity->function.statement != NULL) { + 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(declaration); + (void)get_function_entity(entity, NULL); } } else { - create_local_variable(declaration); + create_local_variable(entity); } return; - case STORAGE_CLASS_ENUM_ENTRY: - /* should already be handled */ - assert(declaration->declaration_kind == DECLARATION_KIND_ENUM_ENTRY); - return; case STORAGE_CLASS_TYPEDEF: - declaration->declaration_kind = DECLARATION_KIND_TYPE; - return; - case STORAGE_CLASS_THREAD: - case STORAGE_CLASS_THREAD_EXTERN: - case STORAGE_CLASS_THREAD_STATIC: break; } panic("invalid storage class found"); } -static void initialize_local_declaration(declaration_t *declaration) +static void initialize_local_declaration(entity_t *entity) { - if(declaration->symbol == NULL || declaration->namespc != NAMESPACE_NORMAL) + if (entity->base.symbol == NULL) + return; + + // no need to emit code in dead blocks + if (entity->declaration.storage_class != STORAGE_CLASS_STATIC + && get_cur_block() == NULL) return; - switch ((declaration_kind_t) declaration->declaration_kind) { + switch ((declaration_kind_t) entity->declaration.kind) { case DECLARATION_KIND_LOCAL_VARIABLE: case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: - create_declaration_initializer(declaration); + create_variable_initializer(entity); + return; + + case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY: + allocate_variable_length_array(entity); return; - case DECLARATION_KIND_LABEL_BLOCK: case DECLARATION_KIND_COMPOUND_MEMBER: case DECLARATION_KIND_GLOBAL_VARIABLE: - case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY: - case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE: - case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE: case DECLARATION_KIND_FUNCTION: - case DECLARATION_KIND_TYPE: - case DECLARATION_KIND_ENUM_ENTRY: + case DECLARATION_KIND_INNER_FUNCTION: return; + case DECLARATION_KIND_PARAMETER: + case DECLARATION_KIND_PARAMETER_ENTITY: + panic("can't initialize parameters"); + case DECLARATION_KIND_UNKNOWN: - panic("can't initialize unknwon declaration"); + panic("can't initialize unknown declaration"); } panic("invalid declaration kind"); } static void declaration_statement_to_firm(declaration_statement_t *statement) { - declaration_t *declaration = statement->declarations_begin; - declaration_t *end = statement->declarations_end->next; - for( ; declaration != end; declaration = declaration->next) { - if(declaration->namespc != NAMESPACE_NORMAL) - continue; - initialize_local_declaration(declaration); + 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 (get_cur_block() != NULL) { + 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); + 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 (get_cur_block() != NULL) { + 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) { - 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); + if (get_cur_block() != NULL) { + add_immBlock_pred(target_block, new_Jmp()); } +} - /* the false block */ - ir_node *false_block = new_immBlock(); +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; - /* the loop body */ - ir_node *body_block; - if (statement->body != NULL) { - ir_node *old_continue_label = continue_label; - ir_node *old_break_label = break_label; - continue_label = header_block; - break_label = false_block; - - body_block = new_immBlock(); - statement_to_firm(statement->body); - - assert(continue_label == header_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(header_block, jmp); - } + keep_alive(header_block); + keep_all_memory(header_block); } else { - body_block = header_block; + body_block = new_immBlock(); + false_block = new_immBlock(); + + set_cur_block(header_block); + create_condition_evaluation(cond, body_block, false_block); + mature_immBlock(body_block); } - /* create the condition */ - set_cur_block(header_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_condition_evaluation(statement->condition, body_block, false_block); - mature_immBlock(body_block); - mature_immBlock(false_block); - mature_immBlock(header_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 false block */ - ir_node *false_block = new_immBlock(); - /* the loop body */ ir_node *body_block = new_immBlock(); - if(jmp != NULL) { - add_immBlock_pred(body_block, jmp); - } - - if (statement->body != NULL) { - ir_node *old_continue_label = continue_label; - ir_node *old_break_label = break_label; - continue_label = header_block; - break_label = false_block; + jump_if_reachable(body_block); - statement_to_firm(statement->body); + ir_node *old_continue_label = continue_label; + ir_node *old_break_label = break_label; + continue_label = header_block; + break_label = NULL; - assert(continue_label == header_block); - assert(break_label == false_block); - continue_label = old_continue_label; - break_label = old_break_label; + set_cur_block(body_block); + statement_to_firm(statement->body); + ir_node *const false_block = get_break_label(); - if (get_cur_block() == NULL) { - mature_immBlock(header_block); - mature_immBlock(body_block); - mature_immBlock(false_block); - return; - } - } + assert(continue_label == header_block); + continue_label = old_continue_label; + break_label = old_break_label; - ir_node *body_jmp = new_Jmp(); - add_immBlock_pred(header_block, body_jmp); - mature_immBlock(header_block); + 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(false_block); - mature_immBlock(header_block); set_cur_block(false_block); } static void for_statement_to_firm(for_statement_t *statement) { - ir_node *jmp = NULL; - /* create declarations */ - declaration_t *declaration = statement->scope.declarations; - for( ; declaration != NULL; declaration = declaration->next) { - create_local_declaration(declaration); - } - declaration = statement->scope.declarations; - for( ; declaration != NULL; declaration = declaration->next) { - initialize_local_declaration(declaration); + entity_t *entity = statement->scope.entities; + for ( ; entity != NULL; entity = entity->base.next) { + if (!is_declaration(entity)) + continue; + + create_local_declaration(entity); } if (get_cur_block() != NULL) { - if(statement->initialisation != NULL) { - expression_to_firm(statement->initialisation); - } - - jmp = new_Jmp(); - } + entity = statement->scope.entities; + for ( ; entity != NULL; entity = entity->base.next) { + if (!is_declaration(entity)) + continue; + initialize_local_declaration(entity); + } - /* create the step block */ - ir_node *const step_block = new_immBlock(); - if (statement->step != NULL) { - expression_to_firm(statement->step); + if (statement->initialisation != NULL) { + expression_to_firm(statement->initialisation); + } } - 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 */ - 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; + /* Create the condition. */ + ir_node *body_block; + ir_node *false_block; + if (statement->condition != NULL) { + body_block = new_immBlock(); + false_block = new_immBlock(); - body_block = new_immBlock(); - statement_to_firm(statement->body); + 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; - assert(continue_label == step_block); - assert(break_label == false_block); - continue_label = old_continue_label; - break_label = old_break_label; + keep_alive(header_block); + keep_all_memory(header_block); + } - if (get_cur_block() != NULL) { - jmp = new_Jmp(); - add_immBlock_pred(step_block, jmp); - } - } else { - body_block = step_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(); } - /* create the condition */ - set_cur_block(header_block); - if (statement->condition != NULL) { - create_condition_evaluation(statement->condition, body_block, - false_block); - } else { - keep_alive(header_block); - jmp = new_Jmp(); - add_immBlock_pred(body_block, jmp); + 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(body_block); - mature_immBlock(false_block); - mature_immBlock(step_block); mature_immBlock(header_block); - mature_immBlock(false_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 (get_cur_block() == NULL) return; dbg_info *dbgi = get_dbg_info(&statement->base.source_position); @@ -4244,22 +5092,17 @@ static void create_jump_statement(const statement_t *statement, 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; -} - -static void switch_statement_to_firm(const switch_statement_t *statement) +static void switch_statement_to_firm(switch_statement_t *statement) { - dbg_info *dbgi = get_dbg_info(&statement->base.source_position); + ir_node *first_block = NULL; + dbg_info *dbgi = get_dbg_info(&statement->base.source_position); + ir_node *cond = NULL; - ir_node *expression = expression_to_firm(statement->expression); - ir_node *cond = new_d_Cond(dbgi, expression); + if (get_cur_block() != NULL) { + ir_node *expression = expression_to_firm(statement->expression); + cond = new_d_Cond(dbgi, expression); + first_block = get_cur_block(); + } set_cur_block(NULL); @@ -4269,20 +5112,73 @@ static void switch_statement_to_firm(const switch_statement_t *statement) saw_default_label = false; current_switch_cond = cond; break_label = NULL; + switch_statement_t *const old_switch = current_switch; + current_switch = statement; + + /* determine a free number for the default label */ + unsigned long num_cases = 0; + long default_proj_nr = 0; + for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) { + if (l->expression == NULL) { + /* default case */ + continue; + } + if (l->last_case >= l->first_case) + num_cases += l->last_case - l->first_case + 1; + if (l->last_case > default_proj_nr) + default_proj_nr = l->last_case; + } + + if (default_proj_nr == INT_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); + for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) { + if (l->expression == NULL) { + /* default case */ + continue; + } + unsigned long start = l->first_case > 0 ? (unsigned long)l->first_case : 0; + if (start < num_cases && l->last_case >= 0) { + unsigned long end = (unsigned long)l->last_case < num_cases ? + (unsigned long)l->last_case : num_cases - 1; + for (unsigned long cns = start; cns <= end; ++cns) { + bits[cns >> 3] |= (1 << (cns & 7)); + } + } + } + /* We look at the first num_cases constants: + * 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; + for (i = 0; i < num_cases; ++i) + if ((bits[i >> 3] & (1 << (i & 7))) == 0) + break; - if (statement->body != NULL) { - statement_to_firm(statement->body); + free(bits); + default_proj_nr = i; + } else { + ++default_proj_nr; } - - if (get_cur_block() != NULL) { - ir_node *jmp = new_Jmp(); - add_immBlock_pred(get_break_label(), jmp); + 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 (!saw_default_label) { - set_cur_block(get_nodes_block(cond)); - ir_node *const proj = new_d_defaultProj(dbgi, cond, - MAGIC_DEFAULT_PN_NUMBER); + statement_to_firm(statement->body); + + jump_if_reachable(get_break_label()); + + 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); } @@ -4292,6 +5188,7 @@ static void switch_statement_to_firm(const switch_statement_t *statement) set_cur_block(break_label); assert(current_switch_cond == cond); + current_switch = old_switch; current_switch_cond = old_switch_cond; break_label = old_break_label; saw_default_label = old_saw_default_label; @@ -4299,204 +5196,322 @@ static void switch_statement_to_firm(const switch_statement_t *statement) static void case_label_to_firm(const case_label_statement_t *statement) { - dbg_info *dbgi = get_dbg_info(&statement->base.source_position); - - ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp()); - - /* let's create a node and hope firm constant folding creates a Const - * node... */ - ir_node *proj; - ir_node *old_block = get_nodes_block(current_switch_cond); - ir_node *block = new_immBlock(); + if (statement->is_empty_range) + return; - set_cur_block(old_block); - if(statement->expression != NULL) { - long start_pn = fold_constant(statement->expression); - long end_pn = start_pn; - if (statement->end_range != NULL) { - end_pn = fold_constant(statement->end_range); - } - assert(start_pn <= end_pn); - /* create jumps for all cases in the given range */ - for (long pn = start_pn; pn <= end_pn; ++pn) { - if(pn == MAGIC_DEFAULT_PN_NUMBER) { - /* oops someone detected our cheating... */ - panic("magic default pn used"); - } - 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); } - } else { - saw_default_label = true; - proj = new_d_defaultProj(dbgi, current_switch_cond, - MAGIC_DEFAULT_PN_NUMBER); - - 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); - } -} - -static ir_node *get_label_block(declaration_t *label) -{ - assert(label->namespc == NAMESPACE_LABEL); - - if(label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) { - return label->v.block; - } - assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN); - - ir_node *old_cur_block = get_cur_block(); - ir_node *block = new_immBlock(); - set_cur_block(old_cur_block); - - label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK; - label->v.block = block; - - ARR_APP1(ir_node *, imature_blocks, block); - - return block; + 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 (get_cur_block() == NULL) return; - ir_node *block = get_label_block(statement->label); - ir_node *jmp = new_Jmp(); - add_immBlock_pred(block, jmp); + if (statement->expression) { + ir_node *irn = expression_to_firm(statement->expression); + dbg_info *dbgi = get_dbg_info(&statement->base.source_position); + ir_node *ijmp = new_d_IJmp(dbgi, irn); + set_irn_link(ijmp, ijmp_list); + ijmp_list = ijmp; + } else { + ir_node *block = get_label_block(statement->label); + ir_node *jmp = new_Jmp(); + add_immBlock_pred(block, jmp); + } set_cur_block(NULL); } -typedef enum modifier_t { - ASM_MODIFIER_WRITE_ONLY = 1 << 0, - ASM_MODIFIER_READ_WRITE = 1 << 1, - ASM_MODIFIER_COMMUTATIVE = 1 << 2, - ASM_MODIFIER_EARLYCLOBBER = 1 << 3, -} modifier_t; - static void asm_statement_to_firm(const asm_statement_t *statement) { - (void) statement; - fprintf(stderr, "WARNING asm not implemented yet!\n"); -#if 0 bool needs_memory = false; + if (statement->is_volatile) { + needs_memory = true; + } + size_t n_clobbers = 0; asm_clobber_t *clobber = statement->clobbers; - for( ; clobber != NULL; clobber = clobber->next) { - if(strcmp(clobber->clobber, "memory") == 0) { + for ( ; clobber != NULL; clobber = clobber->next) { + const char *clobber_str = clobber->clobber.begin; + + if (!be_is_valid_clobber(clobber_str)) { + errorf(&statement->base.source_position, + "invalid clobber '%s' specified", clobber->clobber); + continue; + } + + if (strcmp(clobber_str, "memory") == 0) { needs_memory = true; continue; } - ident *id = new_id_from_str(clobber->clobber); + ident *id = new_id_from_str(clobber_str); obstack_ptr_grow(&asm_obst, id); ++n_clobbers; } assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*)); ident **clobbers = NULL; - if(n_clobbers > 0) { + if (n_clobbers > 0) { clobbers = obstack_finish(&asm_obst); } - /* find and count input and output constraints */ - asm_constraint_t *constraint = statement->inputs; - for( ; constraint != NULL; constraint = constraint->next) { - int modifiers = 0; - bool supports_memop = false; - for(const char *c = constraint->constraints; *c != 0; ++c) { - /* TODO: improve error messages */ - switch(*c) { - case '?': - case '!': - panic("multiple alternative assembler constraints not " - "supported"); - case 'm': - case 'o': - case 'V': - case '<': - case '>': - case 'X': - supports_memop = true; - obstack_1grow(&asm_obst, *c); - break; - case '=': - if(modifiers & ASM_MODIFIER_READ_WRITE) - panic("inconsistent register constraints"); - modifiers |= ASM_MODIFIER_WRITE_ONLY; - break; - case '+': - if(modifiers & ASM_MODIFIER_WRITE_ONLY) - panic("inconsistent register constraints"); - modifiers |= ASM_MODIFIER_READ_WRITE; - break; - case '&': - modifiers |= ASM_MODIFIER_EARLYCLOBBER; - panic("early clobber assembler constraint not supported yet"); - break; - case '%': - modifiers |= ASM_MODIFIER_COMMUTATIVE; - panic("commutative assembler constraint not supported yet"); - break; - case '#': - /* skip register preferences stuff... */ - while(*c != 0 && *c != ',') - ++c; - break; - case '*': - /* skip register preferences stuff... */ - ++c; - break; - default: - obstack_1grow(&asm_obst, *c); - break; + size_t n_inputs = 0; + asm_argument_t *argument = statement->inputs; + for ( ; argument != NULL; argument = argument->next) + n_inputs++; + size_t n_outputs = 0; + argument = statement->outputs; + for ( ; argument != NULL; argument = argument->next) + n_outputs++; + + unsigned next_pos = 0; + + ir_node *ins[n_inputs + n_outputs + 1]; + size_t in_size = 0; + + ir_asm_constraint tmp_in_constraints[n_outputs]; + + const expression_t *out_exprs[n_outputs]; + ir_node *out_addrs[n_outputs]; + size_t out_size = 0; + + argument = statement->outputs; + for ( ; argument != NULL; argument = argument->next) { + const char *constraints = argument->constraints.begin; + asm_constraint_flags_t asm_flags + = be_parse_asm_constraints(constraints); + + if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) { + 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; + } + + unsigned pos = next_pos++; + if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE) + || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) { + expression_t *expr = argument->expression; + ir_node *addr = expression_to_addr(expr); + /* in+output, construct an artifical same_as constraint on the + * input */ + if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) { + char buf[64]; + ir_node *value = get_value_from_lvalue(expr, addr); + + snprintf(buf, sizeof(buf), "%u", (unsigned) out_size); + + ir_asm_constraint constraint; + constraint.pos = pos; + constraint.constraint = new_id_from_str(buf); + constraint.mode = get_ir_mode_storage(expr->base.type); + tmp_in_constraints[in_size] = constraint; + ins[in_size] = value; + + ++in_size; } + + out_exprs[out_size] = expr; + out_addrs[out_size] = addr; + ++out_size; + } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) { + /* pure memory ops need no input (but we have to make sure we + * attach to the memory) */ + assert(! (asm_flags & + (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE + | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER))); + needs_memory = true; + + /* we need to attach the address to the inputs */ + expression_t *expr = argument->expression; + + ir_asm_constraint constraint; + constraint.pos = pos; + constraint.constraint = new_id_from_str(constraints); + constraint.mode = NULL; + tmp_in_constraints[in_size] = constraint; + + ins[in_size] = expression_to_addr(expr); + ++in_size; + continue; + } else { + errorf(&statement->base.source_position, + "only modifiers but no place set in constraints '%s'", + constraints); + continue; } - obstack_1grow(&asm_obst, '\0'); - const char *constraint_string = obstack_finish(&asm_obst); - needs_memory |= supports_memop; - if(supports_memop) { + ir_asm_constraint constraint; + constraint.pos = pos; + constraint.constraint = new_id_from_str(constraints); + constraint.mode = get_ir_mode_storage(argument->expression->base.type); + + obstack_grow(&asm_obst, &constraint, sizeof(constraint)); + } + assert(obstack_object_size(&asm_obst) + == out_size * sizeof(ir_asm_constraint)); + ir_asm_constraint *output_constraints = obstack_finish(&asm_obst); + + + obstack_grow(&asm_obst, tmp_in_constraints, + in_size * sizeof(tmp_in_constraints[0])); + /* find and count input and output arguments */ + argument = statement->inputs; + for ( ; argument != NULL; argument = argument->next) { + const char *constraints = argument->constraints.begin; + asm_constraint_flags_t asm_flags + = be_parse_asm_constraints(constraints); + + if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) { + errorf(&statement->base.source_position, + "some constraints in '%s' are not supported", constraints); + continue; + } + if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) { + errorf(&statement->base.source_position, + "some constraints in '%s' are invalid", constraints); + continue; + } + if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) { + errorf(&statement->base.source_position, + "write flag specified for input constraints '%s'", + constraints); + continue; + } + ir_node *input; + if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE) + || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) { + /* we can treat this as "normal" input */ + input = expression_to_firm(argument->expression); + } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) { + /* pure memory ops need no input (but we have to make sure we + * attach to the memory) */ + assert(! (asm_flags & + (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE + | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER))); + needs_memory = true; + input = expression_to_addr(argument->expression); + } else { + errorf(&statement->base.source_position, + "only modifiers but no place set in constraints '%s'", + constraints); + continue; } + + ir_asm_constraint constraint; + constraint.pos = next_pos++; + constraint.constraint = new_id_from_str(constraints); + constraint.mode = get_irn_mode(input); + + obstack_grow(&asm_obst, &constraint, sizeof(constraint)); + ins[in_size++] = input; + } + + if (needs_memory) { + ir_asm_constraint constraint; + constraint.pos = next_pos++; + constraint.constraint = new_id_from_str(""); + constraint.mode = mode_M; + + obstack_grow(&asm_obst, &constraint, sizeof(constraint)); + ins[in_size++] = get_store(); + } + + assert(obstack_object_size(&asm_obst) + == in_size * sizeof(ir_asm_constraint)); + ir_asm_constraint *input_constraints = obstack_finish(&asm_obst); + + /* create asm node */ + dbg_info *dbgi = get_dbg_info(&statement->base.source_position); + + ident *asm_text = new_id_from_str(statement->asm_text.begin); + + ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints, + out_size, output_constraints, + n_clobbers, clobbers, asm_text); + + if (statement->is_volatile) { + set_irn_pinned(node, op_pin_state_pinned); + } else { + set_irn_pinned(node, op_pin_state_floats); + } + + /* create output projs & connect them */ + if (needs_memory) { + ir_node *projm = new_Proj(node, mode_M, out_size); + set_store(projm); + } + + size_t i; + for (i = 0; i < out_size; ++i) { + const expression_t *out_expr = out_exprs[i]; + long pn = i; + ir_mode *mode = get_ir_mode_storage(out_expr->base.type); + ir_node *proj = new_Proj(node, mode, pn); + ir_node *addr = out_addrs[i]; + + set_value_for_expression_addr(out_expr, proj, addr); } -#endif } -static void ms_try_statement_to_firm(ms_try_statement_t *statement) { +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"); } -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"); } @@ -4510,10 +5525,9 @@ static void statement_to_firm(statement_t *statement) statement->base.transformed = true; #endif - switch(statement->kind) { + switch (statement->kind) { case STATEMENT_INVALID: panic("invalid statement found"); - return; case STATEMENT_EMPTY: /* nothing */ return; @@ -4569,293 +5583,131 @@ 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_decls_in_expression(const expression_t *expression); - -static int count_local_declarations(const declaration_t * decl, - const declaration_t *const end) +static int count_local_variables(const entity_t *entity, + const entity_t *const last) { int count = 0; - for (; decl != end; decl = decl->next) { - if(decl->namespc != NAMESPACE_NORMAL) + entity_t const *const end = last != NULL ? last->base.next : NULL; + for (; entity != end; entity = entity->base.next) { + type_t *type; + bool address_taken; + + if (entity->kind == ENTITY_VARIABLE) { + type = skip_typeref(entity->declaration.type); + address_taken = entity->variable.address_taken; + } else if (entity->kind == ENTITY_PARAMETER) { + type = skip_typeref(entity->declaration.type); + address_taken = entity->parameter.address_taken; + } else { continue; - const type_t *type = skip_typeref(decl->type); - if (!decl->address_taken && is_type_scalar(type)) - ++count; - const initializer_t *initializer = decl->init.initializer; - /* FIXME: should walk initializer hierarchies... */ - if(initializer != NULL && initializer->kind == INITIALIZER_VALUE) { - count += count_decls_in_expression(initializer->value.value); } + + if (!address_taken && is_type_scalar(type)) + ++count; } return count; } -static int count_decls_in_expression(const expression_t *expression) { - int count = 0; - - if(expression == NULL) - return 0; - - switch((expression_kind_t) expression->base.kind) { - case EXPR_STATEMENT: - return count_decls_in_stmts(expression->statement.statement); - EXPR_BINARY_CASES { - int count_left = count_decls_in_expression(expression->binary.left); - int count_right = count_decls_in_expression(expression->binary.right); - return count_left + count_right; - } - EXPR_UNARY_CASES - return count_decls_in_expression(expression->unary.value); - case EXPR_CALL: { - call_argument_t *argument = expression->call.arguments; - for( ; argument != NULL; argument = argument->next) { - count += count_decls_in_expression(argument->expression); - } - return count; - } - - case EXPR_UNKNOWN: - case EXPR_INVALID: - panic("unexpected expression kind"); +static void count_local_variables_in_stmt(statement_t *stmt, void *const env) +{ + int *const count = env; - case EXPR_COMPOUND_LITERAL: - /* TODO... */ + switch (stmt->kind) { + case STATEMENT_DECLARATION: { + const declaration_statement_t *const decl_stmt = &stmt->declaration; + *count += count_local_variables(decl_stmt->declarations_begin, + decl_stmt->declarations_end); break; - - case EXPR_CONDITIONAL: - count += count_decls_in_expression(expression->conditional.condition); - count += count_decls_in_expression(expression->conditional.true_expression); - count += count_decls_in_expression(expression->conditional.false_expression); - return count; - - case EXPR_BUILTIN_PREFETCH: - count += count_decls_in_expression(expression->builtin_prefetch.adr); - count += count_decls_in_expression(expression->builtin_prefetch.rw); - count += count_decls_in_expression(expression->builtin_prefetch.locality); - return count; - - case EXPR_BUILTIN_CONSTANT_P: - count += count_decls_in_expression(expression->builtin_constant.value); - return count; - - case EXPR_SELECT: - count += count_decls_in_expression(expression->select.compound); - return count; - - case EXPR_ARRAY_ACCESS: - count += count_decls_in_expression(expression->array_access.array_ref); - count += count_decls_in_expression(expression->array_access.index); - return count; - - case EXPR_CLASSIFY_TYPE: - count += count_decls_in_expression(expression->classify_type.type_expression); - return count; - - case EXPR_SIZEOF: - case EXPR_ALIGNOF: { - expression_t *tp_expression = expression->typeprop.tp_expression; - if (tp_expression != NULL) { - count += count_decls_in_expression(tp_expression); - } - return count; } - case EXPR_OFFSETOF: - case EXPR_REFERENCE: - case EXPR_CONST: - case EXPR_CHARACTER_CONSTANT: - case EXPR_WIDE_CHARACTER_CONSTANT: - case EXPR_STRING_LITERAL: - case EXPR_WIDE_STRING_LITERAL: - case EXPR_FUNCNAME: - case EXPR_BUILTIN_SYMBOL: - case EXPR_VA_START: - case EXPR_VA_ARG: + case STATEMENT_FOR: + *count += count_local_variables(stmt->fors.scope.entities, NULL); break; - } - - /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers - * (or implement all the missing expressions here/implement a walker) - */ - - return 0; -} - -static int count_decls_in_stmts(const statement_t *stmt) -{ - int count = 0; - for (; stmt != NULL; stmt = stmt->base.next) { - switch (stmt->kind) { - case STATEMENT_EMPTY: - break; - - case STATEMENT_DECLARATION: { - const declaration_statement_t *const decl_stmt = &stmt->declaration; - count += count_local_declarations(decl_stmt->declarations_begin, - decl_stmt->declarations_end->next); - break; - } - - case STATEMENT_COMPOUND: { - const compound_statement_t *const comp = - &stmt->compound; - count += count_decls_in_stmts(comp->statements); - break; - } - - case STATEMENT_IF: { - const if_statement_t *const if_stmt = &stmt->ifs; - count += count_decls_in_expression(if_stmt->condition); - count += count_decls_in_stmts(if_stmt->true_statement); - count += count_decls_in_stmts(if_stmt->false_statement); - break; - } - - case STATEMENT_SWITCH: { - const switch_statement_t *const switch_stmt = &stmt->switchs; - count += count_decls_in_expression(switch_stmt->expression); - count += count_decls_in_stmts(switch_stmt->body); - break; - } - - case STATEMENT_LABEL: { - const label_statement_t *const label_stmt = &stmt->label; - if(label_stmt->statement != NULL) { - count += count_decls_in_stmts(label_stmt->statement); - } - break; - } - - case STATEMENT_WHILE: { - const while_statement_t *const while_stmt = &stmt->whiles; - count += count_decls_in_expression(while_stmt->condition); - count += count_decls_in_stmts(while_stmt->body); - break; - } - - case STATEMENT_DO_WHILE: { - const do_while_statement_t *const do_while_stmt = &stmt->do_while; - count += count_decls_in_expression(do_while_stmt->condition); - count += count_decls_in_stmts(do_while_stmt->body); - break; - } - - case STATEMENT_FOR: { - const for_statement_t *const for_stmt = &stmt->fors; - count += count_local_declarations(for_stmt->scope.declarations, NULL); - count += count_decls_in_expression(for_stmt->initialisation); - count += count_decls_in_expression(for_stmt->condition); - count += count_decls_in_expression(for_stmt->step); - count += count_decls_in_stmts(for_stmt->body); - break; - } - - case STATEMENT_CASE_LABEL: { - const case_label_statement_t *label = &stmt->case_label; - count += count_decls_in_expression(label->expression); - if(label->statement != NULL) { - count += count_decls_in_stmts(label->statement); - } - break; - } - - case STATEMENT_ASM: - case STATEMENT_BREAK: - case STATEMENT_CONTINUE: - break; - - case STATEMENT_EXPRESSION: { - const expression_statement_t *expr_stmt = &stmt->expression; - count += count_decls_in_expression(expr_stmt->expression); - break; - } - - case STATEMENT_GOTO: - case STATEMENT_LEAVE: - case STATEMENT_INVALID: - break; - case STATEMENT_RETURN: { - const return_statement_t *ret_stmt = &stmt->returns; - count += count_decls_in_expression(ret_stmt->value); - break; - } - - case STATEMENT_MS_TRY: { - const ms_try_statement_t *const try_stmt = &stmt->ms_try; - count += count_decls_in_stmts(try_stmt->try_statement); - if(try_stmt->except_expression != NULL) - count += count_decls_in_expression(try_stmt->except_expression); - count += count_decls_in_stmts(try_stmt->final_statement); - break; - } - } + default: + break; } - return count; } -static int get_function_n_local_vars(declaration_t *declaration) +/** + * 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_declarations(declaration->scope.declarations, NULL); + count += count_local_variables(function->parameters.entities, NULL); /* count local variables declared in body */ - count += count_decls_in_stmts(declaration->init.statement); - + walk_statements(function->statement, count_local_variables_in_stmt, &count); return count; } -static void initialize_function_parameters(declaration_t *declaration) +/** + * Build Firm code for the parameters of a function. + */ +static void initialize_function_parameters(entity_t *entity) { - 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(declaration->type); + assert(entity->kind == ENTITY_FUNCTION); + ir_graph *irg = current_ir_graph; + ir_node *args = get_irg_args(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; - declaration_t *parameter = declaration->scope.declarations; - for( ; parameter != NULL; parameter = parameter->next, ++n) { - assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN); - type_t *type = skip_typeref(parameter->type); + int n = 0; + entity_t *parameter = entity->function.parameters.entities; + for ( ; parameter != NULL; parameter = parameter->base.next, ++n) { + if (parameter->kind != ENTITY_PARAMETER) + continue; - bool needs_entity = parameter->address_taken; + assert(parameter->declaration.kind == DECLARATION_KIND_UNKNOWN); + type_t *type = skip_typeref(parameter->declaration.type); + + bool needs_entity = parameter->parameter.address_taken; assert(!is_type_array(type)); - if(is_type_compound(type)) { + if (is_type_compound(type)) { needs_entity = true; } - if(needs_entity) { + if (needs_entity) { ir_entity *entity = get_method_value_param_ent(function_irtype, n); - ident *id = new_id_from_str(parameter->symbol->string); + ident *id = new_id_from_str(parameter->base.symbol->string); set_entity_ident(entity, id); - parameter->declaration_kind - = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY; - parameter->v.entity = entity; + parameter->declaration.kind + = DECLARATION_KIND_PARAMETER_ENTITY; + parameter->parameter.v.entity = entity; 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(parameter->type); + ir_mode *mode = get_ir_mode_storage(type); value = create_conv(NULL, value, mode); value = do_strict_conv(NULL, value); - parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE; - parameter->v.value_number = next_value_number_function; - set_irg_loc_description(current_ir_graph, next_value_number_function, parameter); + parameter->declaration.kind = DECLARATION_KIND_PARAMETER; + parameter->parameter.v.value_number = next_value_number_function; + set_irg_loc_description(current_ir_graph, next_value_number_function, + parameter); ++next_value_number_function; - set_value(parameter->v.value_number, value); + set_value(parameter->parameter.v.value_number, value); } } @@ -4865,22 +5717,27 @@ static void initialize_function_parameters(declaration_t *declaration) * @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 @@ -4894,47 +5751,107 @@ static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_mod } } +static void add_function_pointer(ir_type *segment, ir_entity *method, + const char *unique_template) +{ + ir_type *method_type = get_entity_type(method); + 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); + + set_entity_ld_ident(ptr, new_id_from_chars("", 0)); + set_entity_compiler_generated(ptr, 1); + 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) +{ + ir_node *ijmp; + for (ijmp = ijmp_list; ijmp != NULL; ijmp = get_irn_link(ijmp)) { + add_immBlock_pred(block, ijmp); + } +} + /** - * Create code for a function. + * Create code for a function and all inner functions. + * + * @param entity the function entity */ -static void create_function(declaration_t *declaration) +static void create_function(entity_t *entity) { - ir_entity *function_entity = get_function_entity(declaration); + assert(entity->kind == ENTITY_FUNCTION); + ir_entity *function_entity = get_function_entity(entity, current_outer_frame); - if(declaration->init.statement == NULL) + if (entity->function.statement == NULL) return; - current_function_decl = declaration; - current_function_name = NULL; - current_funcsig = NULL; + if (is_main(entity) && enable_main_collect2_hack) { + prepare_main_collect2(entity); + } - assert(imature_blocks == NULL); - imature_blocks = NEW_ARR_F(ir_node*, 0); + inner_functions = NULL; + current_trampolines = NULL; - int n_local_vars = get_function_n_local_vars(declaration); + if (entity->declaration.modifiers & DM_CONSTRUCTOR) { + ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS); + add_function_pointer(segment, function_entity, "constructor_ptr.%u"); + } + if (entity->declaration.modifiers & DM_DESTRUCTOR) { + ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS); + add_function_pointer(segment, function_entity, "destructor_ptr.%u"); + } + + current_function_entity = entity; + current_function_name = NULL; + current_funcsig = NULL; + + assert(all_labels == NULL); + all_labels = NEW_ARR_F(label_t *, 0); + ijmp_list = NULL; + + 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)); + 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(); /* set inline flags */ - if (declaration->is_inline) + if (entity->function.is_inline) set_irg_inline_property(irg, irg_inline_recomended); - handle_decl_modifier_irg(irg, declaration->decl_modifiers); + handle_decl_modifier_irg(irg, entity->declaration.modifiers); next_value_number_function = 0; - initialize_function_parameters(declaration); + initialize_function_parameters(entity); + current_static_link = entity->function.static_link; - statement_to_firm(declaration->init.statement); + 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) { - type_t *type = skip_typeref(declaration->type); + if (get_cur_block() != NULL) { + type_t *type = skip_typeref(entity->declaration.type); assert(is_type_function(type)); const function_type_t *func_type = &type->function; const type_t *return_type @@ -4945,34 +5862,45 @@ static void create_function(declaration_t *declaration) ret = new_Return(get_store(), 0, NULL); } else { ir_mode *mode; - if(is_type_scalar(return_type)) { - mode = get_ir_mode(func_type->return_type); + if (is_type_scalar(return_type)) { + mode = get_ir_mode_storage(func_type->return_type); } else { mode = mode_P_data; } ir_node *in[1]; /* §5.1.2.2.3 main implicitly returns 0 */ - if (strcmp(declaration->symbol->string, "main") == 0) { - in[0] = new_Const(mode, get_mode_null(mode)); + if (is_main(entity)) { + in[0] = new_Const(get_mode_null(mode)); } else { in[0] = new_Unknown(mode); - if(warning.return_type) { - warningf(&declaration->source_position, - "missing return statement at end of non-void function '%Y'", - declaration->symbol); - } } ret = new_Return(get_store(), 1, in); } add_immBlock_pred(end_block, ret); } - for(int i = 0; i < ARR_LEN(imature_blocks); ++i) { - mature_immBlock(imature_blocks[i]); + bool has_computed_gotos = false; + for (int i = ARR_LEN(all_labels) - 1; i >= 0; --i) { + label_t *label = all_labels[i]; + if (label->address_taken) { + gen_ijmp_branches(label->block); + has_computed_gotos = true; + } + mature_immBlock(label->block); + } + if (has_computed_gotos) { + /* if we have computed goto's in the function, we cannot inline it */ + if (get_irg_inline_property(irg) >= irg_inline_recomended) { + warningf(&entity->base.source_position, + "function '%Y' can never be inlined because it contains a computed goto", + entity->base.symbol); + } + set_irg_inline_property(irg, irg_inline_forbidden); } - DEL_ARR_F(imature_blocks); - imature_blocks = NULL; + + DEL_ARR_F(all_labels); + all_labels = NULL; mature_immBlock(first_block); mature_immBlock(end_block); @@ -4984,17 +5912,17 @@ static void create_function(declaration_t *declaration) int n = get_compound_n_members(frame_type); int align_all = 4; int offset = 0; - for(int i = 0; i < n; ++i) { + for (int i = 0; i < n; ++i) { ir_entity *entity = get_compound_member(frame_type, i); ir_type *entity_type = get_entity_type(entity); int align = get_type_alignment_bytes(entity_type); - if(align > align_all) + if (align > align_all) align_all = align; int misalign = 0; - if(align > 0) { + if (align > 0) { misalign = offset % align; - if(misalign > 0) { + if (misalign > 0) { offset += align - misalign; } } @@ -5005,49 +5933,69 @@ static void create_function(declaration_t *declaration) 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; + + 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; + } } static void scope_to_firm(scope_t *scope) { /* first pass: create declarations */ - declaration_t *declaration = scope->declarations; - for( ; declaration != NULL; declaration = declaration->next) { - if(declaration->namespc != NAMESPACE_NORMAL) - continue; - if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY - || declaration->storage_class == STORAGE_CLASS_TYPEDEF) - continue; - if(declaration->symbol == NULL) + entity_t *entity = scope->entities; + for ( ; entity != NULL; entity = entity->base.next) { + if (entity->base.symbol == NULL) continue; - type_t *type = skip_typeref(declaration->type); - if(is_type_function(type)) { - get_function_entity(declaration); - } else { - create_global_variable(declaration); + if (entity->kind == ENTITY_FUNCTION) { + 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); } } /* second pass: create code/initializers */ - declaration = scope->declarations; - for( ; declaration != NULL; declaration = declaration->next) { - if(declaration->namespc != NAMESPACE_NORMAL) - continue; - if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY - || declaration->storage_class == STORAGE_CLASS_TYPEDEF) - continue; - if(declaration->symbol == NULL) + entity = scope->entities; + for ( ; entity != NULL; entity = entity->base.next) { + if (entity->base.symbol == NULL) continue; - type_t *type = declaration->type; - if(type->kind == TYPE_FUNCTION) { - create_function(declaration); - } else { - assert(declaration->declaration_kind + 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 == DECLARATION_KIND_GLOBAL_VARIABLE); current_ir_graph = get_const_code_irg(); - create_declaration_initializer(declaration); + create_variable_initializer(entity); } } } @@ -5057,63 +6005,76 @@ void init_ast2firm(void) obstack_init(&asm_obst); init_atomic_modes(); - id_underscore = new_id_from_chars("_", 1); - id_imp = new_id_from_chars("__imp_", 6); - - /* OS option must be set to the backend */ - const char *s = "ia32-gasmode=linux"; - switch (firm_opt.os_support) { - case OS_SUPPORT_MINGW: - create_ld_ident = create_ld_ident_win32; - s = "ia32-gasmode=mingw"; - break; - case OS_SUPPORT_LINUX: - create_ld_ident = create_ld_ident_linux_elf; - s = "ia32-gasmode=linux"; break; - break; - case OS_SUPPORT_MACHO: - create_ld_ident = create_ld_ident_macho; - s = "ia32-gasmode=macho"; break; - break; - } - firm_be_option(s); + 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); } + + entitymap_init(&entitymap); } static void init_ir_types(void) { static int ir_types_initialized = 0; - if(ir_types_initialized) + if (ir_types_initialized) return; ir_types_initialized = 1; - type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST); - type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE); - type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE); - ir_type_int = get_ir_type(type_int); + ir_type_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) { + entitymap_destroy(&entitymap); obstack_free(&asm_obst, NULL); } +static void global_asm_to_firm(statement_t *s) +{ + for (; s != NULL; s = s->base.next) { + assert(s->kind == STATEMENT_ASM); + + char const *const text = s->asms.asm_text.begin; + size_t size = s->asms.asm_text.size; + + /* skip the last \0 */ + if (text[size - 1] == '\0') + --size; + + ident *const id = new_id_from_chars(text, size); + add_irp_asm(id); + } +} + void translation_unit_to_firm(translation_unit_t *unit) { + /* 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; - current_switch_cond = NULL; + continue_label = NULL; + break_label = NULL; + current_switch_cond = NULL; + current_translation_unit = unit; init_ir_types(); scope_to_firm(&unit->scope); + global_asm_to_firm(unit->global_asm); + + current_ir_graph = NULL; + current_translation_unit = NULL; }