X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ast2firm.c;h=559b1c21379b92338c2d575f17eb976f1a68d65f;hb=bb8544d38aaa4c716603a5d565c3ff3840454ffc;hp=038142a59bad2ef3ab3981316cfea4f17658ae49;hpb=fbc026427aa34c595fea99e4d4608c76ea7c55c4;p=cparser diff --git a/ast2firm.c b/ast2firm.c index 038142a..559b1c2 100644 --- a/ast2firm.c +++ b/ast2firm.c @@ -46,9 +46,9 @@ #include "mangle.h" #include "walk_statements.h" #include "warning.h" +#include "printer.h" #include "entitymap_t.h" #include "driver/firm_opt.h" -#include "driver/firm_cmdline.h" typedef struct trampoline_region trampoline_region; struct trampoline_region { @@ -56,6 +56,8 @@ struct trampoline_region { ir_entity *region; /**< created region for the trampoline */ }; +fp_model_t firm_fp_model = fp_model_precise; + static const backend_params *be_params; static ir_type *ir_type_char; @@ -81,8 +83,6 @@ 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; @@ -112,12 +112,6 @@ typedef enum declaration_kind_t { } declaration_kind_t; 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); @@ -128,15 +122,13 @@ static void enqueue_inner_function(entity_t *entity) ARR_APP1(entity_t*, inner_functions, entity); } -ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos) +static ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos) { const entity_t *entity = get_irg_loc_description(irg, pos); if (entity != NULL) { - warningf(&entity->base.source_position, - "%s '%#T' might be used uninitialized", - get_entity_kind_name(entity->kind), - entity->declaration.type, entity->base.symbol); + source_position_t const *const pos = &entity->base.source_position; + warningf(WARN_UNINITIALIZED, pos, "'%N' might be used uninitialized", entity); } return new_r_Unknown(irg, mode); } @@ -147,7 +139,7 @@ static const char *dbg_retrieve(const dbg_info *dbg, unsigned *line) if (pos == NULL) return NULL; if (line != NULL) - *line = pos->linenr; + *line = pos->lineno; return pos->input_name; } @@ -156,6 +148,33 @@ static dbg_info *get_dbg_info(const source_position_t *pos) return (dbg_info*) pos; } +static void dbg_print_type_dbg_info(char *buffer, size_t buffer_size, + const type_dbg_info *dbg) +{ + assert(dbg != NULL); + print_to_buffer(buffer, buffer_size); + const type_t *type = (const type_t*) dbg; + print_type(type); + finish_print_to_buffer(); +} + +static type_dbg_info *get_type_dbg_info_(const type_t *type) +{ + return (type_dbg_info*) type; +} + +/* is the current block a reachable one? */ +static bool currently_reachable(void) +{ + ir_node *const block = get_cur_block(); + return block != NULL && !is_Bad(block); +} + +static void set_unreachable_now(void) +{ + set_cur_block(NULL); +} + static ir_mode *atomic_modes[ATOMIC_TYPE_LAST+1]; static ir_mode *mode_int, *mode_uint; @@ -285,11 +304,11 @@ static unsigned count_parameters(const function_type_t *function_type) /** * Creates a Firm type for an atomic type */ -static ir_type *create_atomic_type(atomic_type_kind_t akind) +static ir_type *create_atomic_type(atomic_type_kind_t akind, const type_t *type) { ir_mode *mode = atomic_modes[akind]; - ident *id = get_mode_ident(mode); - ir_type *irtype = new_type_primitive(id, mode); + 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, alignment); @@ -317,15 +336,7 @@ static ir_type *create_complex_type(const complex_type_t *type) */ static ir_type *create_imaginary_type(imaginary_type_t *type) { - atomic_type_kind_t kind = type->akind; - ir_mode *mode = atomic_modes[kind]; - ident *id = get_mode_ident(mode); - ir_type *irtype = new_type_primitive(id, mode); - il_alignment_t alignment = get_type_alignment((type_t*) type); - - set_type_alignment_bytes(irtype, alignment); - - return irtype; + return create_atomic_type(type->akind, (const type_t*) type); } /** @@ -346,12 +357,13 @@ static type_t *get_parameter_type(type_t *orig_type) static ir_type *create_method_type(const function_type_t *function_type, bool for_closure) { - type_t *return_type = skip_typeref(function_type->return_type); + type_t *return_type = skip_typeref(function_type->return_type); - ident *id = id_unique("functiontype.%u"); - int n_parameters = count_parameters(function_type) + (for_closure ? 1 : 0); - int n_results = return_type == type_void ? 0 : 1; - ir_type *irtype = new_type_method(id, n_parameters, n_results); + int n_parameters = count_parameters(function_type) + + (for_closure ? 1 : 0); + int n_results = return_type == type_void ? 0 : 1; + type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) function_type); + ir_type *irtype = new_d_type_method(n_parameters, n_results, dbgi); if (return_type != type_void) { ir_type *restype = get_ir_type(return_type); @@ -413,51 +425,50 @@ is_cdecl: static ir_type *create_pointer_type(pointer_type_t *type) { - type_t *points_to = type->points_to; - ir_type *ir_points_to = get_ir_type_incomplete(points_to); - ir_type *ir_type = new_type_pointer(id_unique("pointer.%u"), - ir_points_to, mode_P_data); + type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) type); + type_t *points_to = type->points_to; + ir_type *ir_points_to = get_ir_type_incomplete(points_to); + ir_type *irtype = new_d_type_pointer(ir_points_to, dbgi); - return ir_type; + return irtype; } static ir_type *create_reference_type(reference_type_t *type) { - type_t *refers_to = type->refers_to; - ir_type *ir_refers_to = get_ir_type_incomplete(refers_to); - ir_type *ir_type = new_type_pointer(id_unique("reference.%u"), - ir_refers_to, mode_P_data); + type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) type); + type_t *refers_to = type->refers_to; + ir_type *ir_refers_to = get_ir_type_incomplete(refers_to); + ir_type *irtype = new_d_type_pointer(ir_refers_to, dbgi); - return ir_type; + return irtype; } static ir_type *create_array_type(array_type_t *type) { - type_t *element_type = type->element_type; - ir_type *ir_element_type = get_ir_type(element_type); - - ident *id = id_unique("array.%u"); - ir_type *ir_type = new_type_array(id, 1, ir_element_type); + type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) type); + type_t *element_type = type->element_type; + ir_type *ir_element_type = get_ir_type(element_type); + ir_type *irtype = new_d_type_array(1, ir_element_type, dbgi); const int align = get_type_alignment_bytes(ir_element_type); - set_type_alignment_bytes(ir_type, align); + set_type_alignment_bytes(irtype, align); if (type->size_constant) { int n_elements = type->size; - set_array_bounds_int(ir_type, 0, 0, n_elements); + set_array_bounds_int(irtype, 0, 0, n_elements); size_t elemsize = get_type_size_bytes(ir_element_type); if (elemsize % align > 0) { elemsize += align - (elemsize % align); } - set_type_size_bytes(ir_type, n_elements * elemsize); + set_type_size_bytes(irtype, n_elements * elemsize); } else { - set_array_lower_bound_int(ir_type, 0, 0); + set_array_lower_bound_int(irtype, 0, 0); } - set_type_state(ir_type, layout_fixed); + set_type_state(irtype, layout_fixed); - return ir_type; + return irtype; } /** @@ -466,7 +477,8 @@ static ir_type *create_array_type(array_type_t *type) * @param size the size */ static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp, - unsigned size) + unsigned size, + const type_t *type) { static ir_mode *s_modes[64 + 1] = {NULL, }; ir_type *res; @@ -485,11 +497,8 @@ static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp, s_modes[size] = mode; } - char name[32]; - snprintf(name, sizeof(name), "I%u", size); - ident *id = new_id_from_str(name); - dbg_info *dbgi = get_dbg_info(&builtin_source_position); - res = new_d_type_primitive(id_mangle_u(get_type_ident(base_tp), id), mode, dbgi); + type_dbg_info *dbgi = get_type_dbg_info_(type); + res = new_d_type_primitive(mode, dbgi); set_primitive_base_type(res, base_tp); return res; @@ -501,7 +510,8 @@ static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp, * @param size the size */ static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp, - unsigned size) + unsigned size, + const type_t *type) { static ir_mode *u_modes[64 + 1] = {NULL, }; ir_type *res; @@ -520,12 +530,8 @@ static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp, u_modes[size] = mode; } - char name[32]; - - snprintf(name, sizeof(name), "U%u", size); - ident *id = new_id_from_str(name); - dbg_info *dbgi = get_dbg_info(&builtin_source_position); - res = new_d_type_primitive(id_mangle_u(get_type_ident(base_tp), id), mode, dbgi); + type_dbg_info *dbgi = get_type_dbg_info_(type); + res = new_d_type_primitive(mode, dbgi); set_primitive_base_type(res, base_tp); return res; @@ -541,9 +547,11 @@ static ir_type *create_bitfield_type(bitfield_type_t *const type) assert(!is_type_float(base)); if (is_type_signed(base)) { - return get_signed_int_type_for_bit_size(irbase, size); + return get_signed_int_type_for_bit_size(irbase, size, + (const type_t*) type); } else { - return get_unsigned_int_type_for_bit_size(irbase, size); + return get_unsigned_int_type_for_bit_size(irbase, size, + (const type_t*) type); } } @@ -566,10 +574,10 @@ static ir_type *create_compound_type(compound_type_t *type, return compound->irtype; } - symbol_t *symbol = compound->base.symbol; + symbol_t *type_symbol = compound->base.symbol; ident *id; - if (symbol != NULL) { - id = new_id_from_str(symbol->string); + if (type_symbol != NULL) { + id = new_id_from_str(type_symbol->string); } else { if (is_union) { id = id_unique("__anonymous_union.%u"); @@ -577,13 +585,12 @@ static ir_type *create_compound_type(compound_type_t *type, id = id_unique("__anonymous_struct.%u"); } } - dbg_info *dbgi = get_dbg_info(&compound->base.source_position); ir_type *irtype; if (is_union) { - irtype = new_d_type_union(id, dbgi); + irtype = new_type_union(id); } else { - irtype = new_d_type_struct(id, dbgi); + irtype = new_type_struct(id); } compound->irtype_complete = false; @@ -644,9 +651,9 @@ static ir_type *create_enum_type(enum_type_t *const type) { type->base.firm_type = ir_type_int; - ir_mode *const mode = mode_int; - tarval *const one = get_mode_one(mode); - tarval * tv_next = get_tarval_null(mode); + ir_mode *const mode = mode_int; + ir_tarval *const one = get_mode_one(mode); + ir_tarval * tv_next = get_mode_null(mode); bool constant_folding_old = constant_folding; constant_folding = true; @@ -671,7 +678,7 @@ static ir_type *create_enum_type(enum_type_t *const type) constant_folding = constant_folding_old; - return create_atomic_type(type->akind); + return create_atomic_type(type->akind, (const type_t*) type); } static ir_type *get_ir_type_incomplete(type_t *type) @@ -709,10 +716,10 @@ ir_type *get_ir_type(type_t *type) switch (type->kind) { case TYPE_ERROR: /* Happens while constant folding, when there was an error */ - return create_atomic_type(ATOMIC_TYPE_VOID); + return create_atomic_type(ATOMIC_TYPE_VOID, NULL); case TYPE_ATOMIC: - firm_type = create_atomic_type(type->atomic.akind); + firm_type = create_atomic_type(type->atomic.akind, type); break; case TYPE_COMPLEX: firm_type = create_complex_type(&type->complex); @@ -741,9 +748,6 @@ ir_type *get_ir_type(type_t *type) case TYPE_ENUM: firm_type = create_enum_type(&type->enumt); break; - case TYPE_BUILTIN: - firm_type = get_ir_type(type->builtin.real_type); - break; case TYPE_BITFIELD: firm_type = create_bitfield_type(&type->bitfield); break; @@ -774,6 +778,11 @@ static ir_mode *get_ir_mode_storage(type_t *type) return mode; } +/* + * get arithmetic mode for a type. This is different from get_ir_mode_storage, + * int that it returns bigger modes for floating point on some platforms + * (x87 internally does arithemtic with 80bits) + */ static ir_mode *get_ir_mode_arithmetic(type_t *type) { ir_mode *mode = get_ir_mode_storage(type); @@ -864,16 +873,21 @@ static const struct { { rts_strncmp, 1, "strncmp", 3, _C89 }, { rts_strcpy, 1, "strcpy", 2, _C89 }, { rts_strlen, 1, "strlen", 1, _C89 }, - { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */ + { rts_memcpy, 1, "memcpy", 3, _C89 }, { rts_mempcpy, 1, "mempcpy", 3, _GNUC }, - { rts_memmove, 1, "memmove", 3, _C89 }, /* HMM, man say its C99 */ - { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */ - { rts_memcmp, 1, "memcmp", 3, _C89 }, /* HMM, man say its C99 */ + { rts_memmove, 1, "memmove", 3, _C89 }, + { rts_memset, 1, "memset", 3, _C89 }, + { rts_memcmp, 1, "memcmp", 3, _C89 }, }; static ident *rts_idents[lengthof(rts_data)]; -static ident* (*create_ld_ident)(entity_t*) = create_name_linux_elf; +static create_ld_ident_func create_ld_ident = create_name_linux_elf; + +void set_create_ld_ident(ident *(*func)(entity_t*)) +{ + create_ld_ident = func; +} /** * Handle GNU attributes for entities @@ -885,19 +899,20 @@ static void handle_decl_modifiers(ir_entity *irentity, entity_t *entity) { assert(is_declaration(entity)); decl_modifiers_t modifiers = entity->declaration.modifiers; - if (modifiers & DM_PURE) { - /* TRUE if the declaration includes the GNU - __attribute__((pure)) specifier. */ - set_entity_additional_property(irentity, mtp_property_pure); - } - if (modifiers & DM_CONST) { - set_entity_additional_property(irentity, mtp_property_const); - have_const_functions = true; + + if (is_method_entity(irentity)) { + if (modifiers & DM_PURE) { + set_entity_additional_properties(irentity, mtp_property_pure); + } + if (modifiers & DM_CONST) { + add_entity_additional_properties(irentity, mtp_property_const); + } } if (modifiers & DM_USED) { - /* TRUE if the declaration includes the GNU - __attribute__((used)) specifier. */ - set_entity_stickyness(irentity, stickyness_sticky); + add_entity_linkage(irentity, IR_LINKAGE_HIDDEN_USER); + } + if (modifiers & DM_WEAK) { + add_entity_linkage(irentity, IR_LINKAGE_WEAK); } } @@ -920,7 +935,7 @@ static bool is_main(entity_t *entity) /** * Creates an entity representing a function. * - * @param declaration the function declaration + * @param entity the function declaration/definition * @param owner_type the owner type of this function, NULL * for global functions */ @@ -931,6 +946,13 @@ static ir_entity *get_function_entity(entity_t *entity, ir_type *owner_type) 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; @@ -946,14 +968,13 @@ static ir_entity *get_function_entity(entity_t *entity, ir_type *owner_type) symbol_t *symbol = entity->base.symbol; ident *id = new_id_from_str(symbol->string); - /* already an entity defined? */ ir_entity *irentity = entitymap_get(&entitymap, symbol); bool const has_body = entity->function.statement != NULL; if (irentity != NULL) { - if (get_entity_visibility(irentity) == visibility_external_allocated + if (get_entity_visibility(irentity) == ir_visibility_external && has_body) { - set_entity_visibility(irentity, visibility_external_visible); + set_entity_visibility(irentity, ir_visibility_default); } goto entity_created; } @@ -992,33 +1013,44 @@ static ir_entity *get_function_entity(entity_t *entity, ir_type *owner_type) bool const is_inline = entity->function.is_inline; if (is_inline && storage_class == STORAGE_CLASS_NONE && has_body) { - set_entity_visibility(irentity, visibility_external_visible); + set_entity_visibility(irentity, ir_visibility_default); } else if (storage_class == STORAGE_CLASS_STATIC || (is_inline && has_body)) { - if (!has_body) { - /* this entity was declared, but is defined nowhere */ - set_entity_peculiarity(irentity, peculiarity_description); - } - set_entity_visibility(irentity, visibility_local); + set_entity_visibility(irentity, ir_visibility_local); } else if (has_body) { - set_entity_visibility(irentity, visibility_external_visible); + set_entity_visibility(irentity, ir_visibility_default); } else { - set_entity_visibility(irentity, visibility_external_allocated); + set_entity_visibility(irentity, ir_visibility_external); } } else { /* nested functions are always local */ - set_entity_visibility(irentity, visibility_local); + set_entity_visibility(irentity, ir_visibility_local); } - set_entity_allocation(irentity, allocation_static); /* We should check for file scope here, but as long as we compile C only this is not needed. */ - if (! firm_opt.freestanding && !has_body) { + if (!freestanding && !has_body) { /* check for a known runtime function */ 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; @@ -1030,115 +1062,309 @@ static ir_entity *get_function_entity(entity_t *entity, ir_type *owner_type) entitymap_insert(&entitymap, symbol, irentity); entity_created: - entity->declaration.kind = DECLARATION_KIND_FUNCTION; - entity->function.irentity = irentity; + original_entity->declaration.kind = DECLARATION_KIND_FUNCTION; + original_entity->function.irentity = irentity; return irentity; } +/** + * Creates a SymConst for a given entity. + * + * @param dbgi debug info + * @param entity the entity + */ +static ir_node *create_symconst(dbg_info *dbgi, ir_entity *entity) +{ + assert(entity != NULL); + union symconst_symbol sym; + sym.entity_p = entity; + return new_d_SymConst(dbgi, mode_P, sym, symconst_addr_ent); +} + static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode) { ir_mode *value_mode = get_irn_mode(value); - if (value_mode == dest_mode || is_Bad(value)) + if (value_mode == dest_mode) return value; if (dest_mode == mode_b) { ir_node *zero = new_Const(get_mode_null(value_mode)); - ir_node *cmp = new_d_Cmp(dbgi, value, zero); - ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg); - return proj; + ir_node *cmp = new_d_Cmp(dbgi, value, zero, ir_relation_less_greater); + return cmp; } return new_d_Conv(dbgi, value, dest_mode); } +static ir_node *create_Const_from_bool(ir_mode *const mode, bool const v) +{ + return new_Const((v ? get_mode_one : get_mode_null)(mode)); +} + /** - * Creates a Const node representing a constant. + * Creates a SymConst node representing a wide string literal. + * + * @param literal the wide string literal */ -static ir_node *const_to_firm(const const_expression_t *cnst) +static ir_node *wide_string_literal_to_firm( + const string_literal_expression_t *literal) { - dbg_info *dbgi = get_dbg_info(&cnst->base.source_position); - type_t *type = skip_typeref(cnst->base.type); - ir_mode *mode = get_ir_mode_storage(type); + 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); - 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); + 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); - 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, entity); } /** - * Creates a Const node representing a character constant. + * Creates a SymConst node representing a string constant. + * + * @param src_pos the source position of the string constant + * @param id_prefix a prefix for the name of the generated string constant + * @param value the value of the string constant */ -static ir_node *character_constant_to_firm(const const_expression_t *cnst) +static ir_node *string_to_firm(const source_position_t *const src_pos, + const char *const id_prefix, + const string_t *const value) { - dbg_info *dbgi = get_dbg_info(&cnst->base.source_position); - ir_mode *mode = get_ir_mode_arithmetic(cnst->base.type); + ir_type *const global_type = get_glob_type(); + dbg_info *const dbgi = get_dbg_info(src_pos); + ir_type *const type = new_type_array(1, ir_type_const_char); - long long int v; - size_t const size = cnst->v.character.size; - if (size == 1 && char_is_signed) { - v = (signed char)cnst->v.character.begin[0]; - } else { - v = 0; - for (size_t i = 0; i < size; ++i) { - v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]); + 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_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); + + const char* const string = value->begin; + const size_t slen = value->size; + + 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); + + 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_entity_initializer(entity, initializer); + + return create_symconst(dbgi, entity); +} + +static bool try_create_integer(literal_expression_t *literal, + type_t *type, unsigned char base) +{ + const char *string = literal->value.begin; + size_t size = literal->value.size; + + 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; +} + +static void create_integer_tarval(literal_expression_t *literal) +{ + unsigned us = 0; + unsigned ls = 0; + symbol_t *suffix = literal->suffix; + /* parse suffix */ + if (suffix != NULL) { + for (const char *c = suffix->string; *c != '\0'; ++c) { + if (*c == 'u' || *c == 'U') { ++us; } + if (*c == 'l' || *c == 'L') { ++ls; } } } - char buf[128]; - size_t len = snprintf(buf, sizeof(buf), "%lld", v); - tarval *tv = new_tarval_from_str(buf, len, mode); - return new_d_Const(dbgi, tv); + unsigned base; + switch (literal->base.kind) { + case EXPR_LITERAL_INTEGER_OCTAL: base = 8; break; + case EXPR_LITERAL_INTEGER: base = 10; break; + case EXPR_LITERAL_INTEGER_HEXADECIMAL: base = 16; break; + default: panic("invalid literal kind"); + } + + tarval_int_overflow_mode_t old_mode = tarval_get_integer_overflow_mode(); + + /* now try if the constant is small enough for some types */ + tarval_set_integer_overflow_mode(TV_OVERFLOW_BAD); + if (ls < 1) { + if (us == 0 && try_create_integer(literal, type_int, base)) + goto finished; + if ((us == 1 || base != 10) + && try_create_integer(literal, type_unsigned_int, base)) + goto finished; + } + if (ls < 2) { + if (us == 0 && try_create_integer(literal, type_long, base)) + goto finished; + if ((us == 1 || base != 10) + && try_create_integer(literal, type_unsigned_long, base)) + goto finished; + } + /* last try? then we should not report tarval_bad */ + if (us != 1 && base == 10) + tarval_set_integer_overflow_mode(TV_OVERFLOW_WRAP); + if (us == 0 && try_create_integer(literal, type_long_long, base)) + goto finished; + + /* last try */ + assert(us == 1 || base != 10); + tarval_set_integer_overflow_mode(TV_OVERFLOW_WRAP); + bool res = try_create_integer(literal, type_unsigned_long_long, base); + if (!res) + panic("internal error when parsing number literal"); + +finished: + tarval_set_integer_overflow_mode(old_mode); +} + +void determine_literal_type(literal_expression_t *literal) +{ + switch (literal->base.kind) { + case EXPR_LITERAL_INTEGER: + case EXPR_LITERAL_INTEGER_OCTAL: + case EXPR_LITERAL_INTEGER_HEXADECIMAL: + create_integer_tarval(literal); + return; + default: + break; + } } /** - * Creates a Const node representing a wide character constant. + * Creates a Const node representing a constant. */ -static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst) +static ir_node *literal_to_firm(const literal_expression_t *literal) { - dbg_info *dbgi = get_dbg_info(&cnst->base.source_position); - ir_mode *mode = get_ir_mode_arithmetic(cnst->base.type); + 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; - long long int v = cnst->v.wide_character.begin[0]; + 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); - char buf[128]; - size_t len = snprintf(buf, sizeof(buf), "%lld", v); - tarval *tv = new_tarval_from_str(buf, len, mode); + 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); - return new_d_Const(dbgi, tv); + tv = new_tarval_from_str(buf, len, mode); + goto make_const; + } + case EXPR_LITERAL_INTEGER: + case EXPR_LITERAL_INTEGER_OCTAL: + case EXPR_LITERAL_INTEGER_HEXADECIMAL: + assert(literal->target_value != NULL); + tv = literal->target_value; + goto make_const; + case EXPR_LITERAL_FLOATINGPOINT: + tv = new_tarval_from_str(string, size, mode); + goto make_const; + case EXPR_LITERAL_FLOATINGPOINT_HEXADECIMAL: { + char buffer[size + 2]; + memcpy(buffer, "0x", 2); + memcpy(buffer+2, string, size); + tv = new_tarval_from_str(buffer, size+2, mode); + goto make_const; + } + case EXPR_LITERAL_BOOLEAN: + if (string[0] == 't') { + tv = get_mode_one(mode); + } else { + assert(string[0] == 'f'); + tv = get_mode_null(mode); + } + goto make_const; + case EXPR_LITERAL_MS_NOOP: + tv = get_mode_null(mode); + goto make_const; + default: + break; + } + panic("Invalid literal kind found"); + +make_const: ; + dbg_info *dbgi = get_dbg_info(&literal->base.source_position); + ir_node *res = new_d_Const(dbgi, tv); + ir_mode *mode_arith = get_ir_mode_arithmetic(type); + return create_conv(dbgi, res, mode_arith); } /* * 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 ir_entity *alloc_trampoline(ir_type *frame_type, int size, unsigned alignment) +{ static unsigned area_cnt = 0; char buf[32]; - snprintf(buf, sizeof(buf), "trampolin%u", area_cnt++); - ident *name = new_id_from_str(buf); - - ir_type *tp = new_type_array(id_mangle_u(get_type_ident(frame_type), name), 1, ir_type_char); + 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 */ @@ -1185,23 +1411,6 @@ static ir_node *get_trampoline_region(dbg_info *dbgi, ir_entity *entity) region); } - -/** - * 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 *create_symconst(dbg_info *dbgi, ir_mode *mode, - ir_entity *entity) -{ - assert(entity != NULL); - union symconst_symbol sym; - sym.entity_p = entity; - return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent); -} - /** * Creates a trampoline for a function represented by an entity. * @@ -1215,7 +1424,7 @@ static ir_node *create_trampoline(dbg_info *dbgi, ir_mode *mode, assert(entity != NULL); ir_node *in[3]; in[0] = get_trampoline_region(dbgi, entity); - in[1] = create_symconst(dbgi, mode, entity); + in[1] = create_symconst(dbgi, 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()); @@ -1223,104 +1432,6 @@ static ir_node *create_trampoline(dbg_info *dbgi, ir_mode *mode, return new_Proj(irn, mode, pn_Builtin_1_result); } -/** - * Creates a SymConst node representing a string constant. - * - * @param src_pos the source position of the string constant - * @param id_prefix a prefix for the name of the generated string constant - * @param value the value of the string constant - */ -static ir_node *string_to_firm(const source_position_t *const src_pos, - const char *const id_prefix, - const string_t *const value) -{ - 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); - - 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, visibility_local); - - ir_type *const elem_type = ir_type_const_char; - ir_mode *const mode = get_type_mode(elem_type); - - const char* const string = value->begin; - const size_t slen = value->size; - - 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); - - ir_initializer_t *initializer = create_initializer_compound(slen); - for (size_t i = 0; i < slen; ++i) { - tarval *tv = new_tarval_from_long(string[i], mode); - ir_initializer_t *val = create_initializer_tarval(tv); - set_initializer_compound_value(initializer, i, val); - } - set_entity_initializer(entity, initializer); - - return create_symconst(dbgi, 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) -{ - return string_to_firm(&literal->base.source_position, "Lstr.%u", - &literal->value); -} - -/** - * 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) -{ - 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); - - ident *const id = id_unique("Lstr.%u"); - ir_entity *const entity = new_d_entity(global_type, id, type, dbgi); - set_entity_ld_ident(entity, id); - set_entity_variability(entity, variability_constant); - set_entity_allocation(entity, allocation_static); - - ir_mode *const mode = get_type_mode(elem_type); - - const wchar_rep_t *const string = literal->value.begin; - const size_t slen = literal->value.size; - - 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); - for (size_t i = 0; i < slen; ++i) { - tarval *tv = new_tarval_from_long(string[i], mode); - ir_initializer_t *val = create_initializer_tarval(tv); - set_initializer_compound_value(initializer, i, val); - } - set_entity_initializer(entity, initializer); - - return create_symconst(dbgi, mode_P_data, entity); -} - /** * Dereference an address. * @@ -1378,25 +1489,6 @@ 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 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); - } -} - /** * Returns the correct base address depending on whether it is a parameter or a * normal local variable. @@ -1447,19 +1539,21 @@ static ir_node *reference_expression_to_firm(const reference_expression_t *ref) /* make sure the type is constructed */ (void) get_ir_type(type); - /* for gcc compatibility we have to produce (dummy) addresses for some - * builtins */ if (entity->kind == ENTITY_FUNCTION && entity->function.btk != bk_none) { - if (warning.other) { - warningf(&ref->base.source_position, - "taking address of builtin '%Y'", ref->entity->base.symbol); + ir_entity *irentity = get_function_entity(entity, NULL); + /* for gcc compatibility we have to produce (dummy) addresses for some + * builtins which don't have entities */ + if (irentity == NULL) { + source_position_t const *const pos = &ref->base.source_position; + symbol_t const *const sym = ref->entity->base.symbol; + warningf(WARN_OTHER, pos, "taking address of builtin '%Y'", sym); + + /* simply create a NULL pointer */ + ir_mode *mode = get_ir_mode_arithmetic(type_void_ptr); + ir_node *res = new_Const(get_mode_null(mode)); + + return res; } - - /* simply create a NULL pointer */ - ir_mode *mode = get_ir_mode_arithmetic(type_void_ptr); - ir_node *res = new_Const_long(mode, 0); - - return res; } switch ((declaration_kind_t) entity->declaration.kind) { @@ -1477,14 +1571,13 @@ static ir_node *reference_expression_to_firm(const reference_expression_t *ref) return create_conv(NULL, value, get_ir_mode_arithmetic(type)); } case DECLARATION_KIND_FUNCTION: { - ir_mode *const mode = get_ir_mode_storage(type); - return create_symconst(dbgi, mode, entity->function.irentity); + return create_symconst(dbgi, 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); + return create_symconst(dbgi, entity->function.irentity); } else { /* need trampoline here */ return create_trampoline(dbgi, mode, entity->function.irentity); @@ -1492,7 +1585,7 @@ static ir_node *reference_expression_to_firm(const reference_expression_t *ref) } case DECLARATION_KIND_GLOBAL_VARIABLE: { const variable_t *variable = &entity->variable; - ir_node *const addr = get_global_var_address(dbgi, variable); + ir_node *const addr = create_symconst(dbgi, variable->v.entity); return deref_address(dbgi, variable->base.type, addr); } @@ -1534,7 +1627,7 @@ static ir_node *reference_addr(const reference_expression_t *ref) * as an indicator for no real address) */ return NULL; case DECLARATION_KIND_GLOBAL_VARIABLE: { - ir_node *const addr = get_global_var_address(dbgi, &entity->variable); + ir_node *const addr = create_symconst(dbgi, entity->variable.v.entity); return addr; } case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: { @@ -1556,9 +1649,7 @@ static ir_node *reference_addr(const reference_expression_t *ref) 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); + return create_symconst(dbgi, entity->function.irentity); } case DECLARATION_KIND_INNER_FUNCTION: { @@ -1566,7 +1657,7 @@ static ir_node *reference_addr(const reference_expression_t *ref) ir_mode *const mode = get_ir_mode_storage(type); if (!entity->function.goto_to_outer && !entity->function.need_closure) { /* inner function not using the closure */ - return create_symconst(dbgi, mode, entity->function.irentity); + return create_symconst(dbgi, entity->function.irentity); } else { /* need trampoline here */ return create_trampoline(dbgi, mode, entity->function.irentity); @@ -1608,7 +1699,8 @@ static ir_node *gen_unary_builtin(ir_builtin_kind kind, expression_t *op, type_t * @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) +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); @@ -1621,7 +1713,6 @@ static ir_node *gen_unary_builtin_pinned(ir_builtin_kind kind, expression_t *op, return new_Proj(irn, get_type_mode(res), pn_Builtin_1_result); } - /** * Generate an binary-void-return builtin. * @@ -1631,8 +1722,9 @@ static ir_node *gen_unary_builtin_pinned(ir_builtin_kind kind, expression_t *op, * @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) +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); @@ -1655,10 +1747,10 @@ static ir_node *process_builtin_call(const call_expression_t *call) assert(call->function->kind == EXPR_REFERENCE); reference_expression_t *builtin = &call->function->reference; - type_t *type = skip_typeref(builtin->base.type); - assert(is_type_pointer(type)); + type_t *expr_type = skip_typeref(builtin->base.type); + assert(is_type_pointer(expr_type)); - type_t *function_type = skip_typeref(type->pointer.points_to); + type_t *function_type = skip_typeref(expr_type->pointer.points_to); switch (builtin->entity->function.btk) { case bk_gnu_builtin_alloca: { @@ -1679,24 +1771,26 @@ static ir_node *process_builtin_call(const call_expression_t *call) } 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); - tarval *tv = get_mode_infinite(mode); - ir_node *res = new_d_Const(dbgi, tv); - return res; + 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 bk_gnu_builtin_nan: case bk_gnu_builtin_nanf: case bk_gnu_builtin_nanl: { /* Ignore string for now... */ assert(is_type_function(function_type)); - type_t *type = function_type->function.return_type; - ir_mode *mode = get_ir_mode_arithmetic(type); - tarval *tv = get_mode_NAN(mode); - ir_node *res = new_d_Const(dbgi, tv); + type_t *type = function_type->function.return_type; + ir_mode *mode = get_ir_mode_arithmetic(type); + ir_tarval *tv = get_mode_NAN(mode); + ir_node *res = new_d_Const(dbgi, tv); return res; } case bk_gnu_builtin_expect: { @@ -1725,7 +1819,6 @@ static ir_node *process_builtin_call(const call_expression_t *call) } } case bk_gnu_builtin_return_address: { - expression_t *const expression = call->arguments->expression; ir_node *in[2]; @@ -1773,6 +1866,18 @@ static ir_node *process_builtin_call(const call_expression_t *call) 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: { @@ -1790,7 +1895,7 @@ static ir_node *process_builtin_call(const call_expression_t *call) case bk_ms_ReturnAddress: { ir_node *in[2]; - in[0] = new_Const_long(mode_int, 0); + 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); @@ -1840,7 +1945,7 @@ static ir_node *process_builtin_call(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); + assert(currently_reachable()); expression_t *function = call->function; if (function->kind == EXPR_REFERENCE) { @@ -1848,14 +1953,15 @@ static ir_node *call_expression_to_firm(const call_expression_t *const call) entity_t *entity = ref->entity; if (entity->kind == ENTITY_FUNCTION) { - if (entity->function.btk != bk_none) { - return process_builtin_call(call); - } - 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 0 if (irentity == rts_entities[rts_alloca]) { /* handle alloca() call */ expression_t *argument = call->arguments->expression; @@ -1873,6 +1979,7 @@ static ir_node *call_expression_to_firm(const call_expression_t *const call) return res; } +#endif } } ir_node *callee = expression_to_firm(function); @@ -1895,9 +2002,9 @@ static ir_node *call_expression_to_firm(const call_expression_t *const call) /* we need to construct a new method type matching the call * arguments... */ + type_dbg_info *tdbgi = get_type_dbg_info_((const type_t*) function_type); int n_res = get_method_n_ress(ir_method_type); - 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, @@ -1927,8 +2034,8 @@ static ir_node *call_expression_to_firm(const call_expression_t *const call) expression_t *expression = argument->expression; ir_node *arg_node = expression_to_firm(expression); - type_t *type = skip_typeref(expression->base.type); - if (!is_type_compound(type)) { + type_t *arg_type = skip_typeref(expression->base.type); + if (!is_type_compound(arg_type)) { ir_mode *mode = get_ir_mode_storage(expression->base.type); arg_node = create_conv(dbgi, arg_node, mode); arg_node = do_strict_conv(dbgi, arg_node); @@ -1968,7 +2075,8 @@ static ir_node *call_expression_to_firm(const call_expression_t *const call) * nodes into a new and unreachable block. */ keep_alive(node); keep_alive(get_cur_block()); - new_Block(0, NULL); + ir_node *block = new_Block(0, NULL); + set_cur_block(block); } return result; @@ -2007,10 +2115,10 @@ static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type, } } -static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size) +static ir_tarval *create_bitfield_mask(ir_mode *mode, int offset, int size) { - tarval *all_one = get_mode_all_one(mode); - int mode_size = get_mode_size_bits(mode); + ir_tarval *all_one = get_mode_all_one(mode); + int mode_size = get_mode_size_bits(mode); assert(offset >= 0); assert(size >= 0); @@ -2019,12 +2127,12 @@ static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size) return all_one; } - long shiftr = get_mode_size_bits(mode) - size; - long shiftl = offset; - tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint); - tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint); - tarval *mask0 = tarval_shr(all_one, tv_shiftr); - tarval *mask1 = tarval_shl(mask0, tv_shiftl); + long shiftr = get_mode_size_bits(mode) - size; + long shiftl = offset; + ir_tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint); + ir_tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint); + ir_tarval *mask0 = tarval_shr(all_one, tv_shiftr); + ir_tarval *mask1 = tarval_shl(mask0, tv_shiftl); return mask1; } @@ -2043,23 +2151,23 @@ static ir_node *bitfield_store_to_firm(dbg_info *dbgi, int bitoffset = get_entity_offset_bits_remainder(entity); int bitsize = get_mode_size_bits(get_type_mode(entity_type)); - tarval *mask = create_bitfield_mask(mode, 0, bitsize); - ir_node *mask_node = new_d_Const(dbgi, mask); - ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode); - tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint); - ir_node *shiftcount = new_d_Const(dbgi, shiftl); - ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode); + ir_tarval *mask = create_bitfield_mask(mode, 0, bitsize); + ir_node *mask_node = new_d_Const(dbgi, mask); + ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode); + ir_tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint); + ir_node *shiftcount = new_d_Const(dbgi, shiftl); + ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode); /* load current value */ - ir_node *mem = get_store(); - ir_node *load = new_d_Load(dbgi, mem, addr, mode, - 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); - tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize); - tarval *inv_mask = tarval_not(shift_mask); - ir_node *inv_mask_node = new_d_Const(dbgi, inv_mask); - ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode); + ir_node *mem = get_store(); + ir_node *load = new_d_Load(dbgi, mem, addr, mode, + set_volatile ? cons_volatile : cons_none); + ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M); + ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res); + ir_tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize); + ir_tarval *inv_mask = tarval_not(shift_mask); + ir_node *inv_mask_node = new_d_Const(dbgi, inv_mask); + ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode); /* construct new value and store */ ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode); @@ -2094,13 +2202,13 @@ static ir_node *bitfield_extract_to_firm(const select_expression_t *expression, int bitsize = get_mode_size_bits(get_type_mode(entity_type)); long shift_bitsl = machine_size - bitoffset - bitsize; assert(shift_bitsl >= 0); - tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint); + ir_tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint); ir_node *countl = new_d_Const(dbgi, tvl); ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int); long shift_bitsr = bitoffset + shift_bitsl; assert(shift_bitsr <= (long) machine_size); - tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint); + ir_tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint); ir_node *countr = new_d_Const(dbgi, tvr); ir_node *shiftr; if (mode_is_signed(mode)) { @@ -2283,22 +2391,21 @@ static bool is_local_variable(expression_t *expression) return entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE; } -static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type) +static ir_relation get_relation(const expression_kind_t kind) { switch(kind) { - case EXPR_BINARY_EQUAL: return pn_Cmp_Eq; - case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg; - case EXPR_BINARY_NOTEQUAL: - return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg; + case EXPR_BINARY_EQUAL: return ir_relation_equal; + case EXPR_BINARY_ISLESSGREATER: return ir_relation_less_greater; + case EXPR_BINARY_NOTEQUAL: return ir_relation_unordered_less_greater; case EXPR_BINARY_ISLESS: - case EXPR_BINARY_LESS: return pn_Cmp_Lt; + case EXPR_BINARY_LESS: return ir_relation_less; case EXPR_BINARY_ISLESSEQUAL: - case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le; + case EXPR_BINARY_LESSEQUAL: return ir_relation_less_equal; case EXPR_BINARY_ISGREATER: - case EXPR_BINARY_GREATER: return pn_Cmp_Gt; + case EXPR_BINARY_GREATER: return ir_relation_greater; case EXPR_BINARY_ISGREATEREQUAL: - case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge; - case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo; + case EXPR_BINARY_GREATEREQUAL: return ir_relation_greater_equal; + case EXPR_BINARY_ISUNORDERED: return ir_relation_unordered; default: break; @@ -2324,13 +2431,11 @@ static ir_node *handle_assume_compare(dbg_info *dbi, expression_t *op1 = expression->left; expression_t *op2 = expression->right; entity_t *var2, *var = NULL; - ir_node *res = NULL; - pn_Cmp cmp_val; - - cmp_val = get_pnc(expression->base.kind, op1->base.type); + ir_node *res = NULL; + ir_relation relation = get_relation(expression->base.kind); if (is_local_variable(op1) && is_local_variable(op2)) { - var = op1->reference.entity; + var = op1->reference.entity; var2 = op2->reference.entity; type_t *const type = skip_typeref(var->declaration.type); @@ -2339,21 +2444,21 @@ static ir_node *handle_assume_compare(dbg_info *dbi, ir_node *const irn1 = get_value(var->variable.v.value_number, mode); ir_node *const irn2 = get_value(var2->variable.v.value_number, mode); - res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val)); + res = new_d_Confirm(dbi, irn2, irn1, get_inversed_relation(relation)); set_value(var2->variable.v.value_number, res); - res = new_d_Confirm(dbi, irn1, irn2, cmp_val); + res = new_d_Confirm(dbi, irn1, irn2, relation); set_value(var->variable.v.value_number, res); return res; } - expression_t *con; - if (is_local_variable(op1) && is_constant_expression(op2)) { + expression_t *con = NULL; + if (is_local_variable(op1) && is_constant_expression(op2) == EXPR_CLASS_CONSTANT) { var = op1->reference.entity; con = op2; - } else if (is_constant_expression(op1) && is_local_variable(op2)) { - cmp_val = get_inversed_pnc(cmp_val); + } else if (is_constant_expression(op1) == EXPR_CLASS_CONSTANT && is_local_variable(op2)) { + relation = get_inversed_relation(relation); var = op2->reference.entity; con = op1; } @@ -2363,7 +2468,7 @@ static ir_node *handle_assume_compare(dbg_info *dbi, ir_mode *const mode = get_ir_mode_storage(type); res = get_value(var->variable.v.value_number, mode); - res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val); + res = new_d_Confirm(dbi, res, expression_to_firm(con), relation); set_value(var->variable.v.value_number, res); } return res; @@ -2390,10 +2495,15 @@ static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) } } -static ir_node *create_cast(dbg_info *dbgi, ir_node *value_node, +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); @@ -2408,12 +2518,12 @@ static ir_node *create_cast(dbg_info *dbgi, ir_node *value_node, 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 addr = create_symconst(dbgi, from_var->v.entity); ir_node *const base = deref_address(dbgi, from_var->base.type, addr); value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(from_type)); } if (to_var != NULL) { - ir_node *const addr = get_global_var_address(dbgi, to_var); + ir_node *const addr = create_symconst(dbgi, to_var->v.entity); ir_node *const base = deref_address(dbgi, to_var->base.type, addr); value_node = new_d_Sub(dbgi, value_node, base, mode); } @@ -2471,7 +2581,7 @@ static ir_node *unary_expression_to_firm(const unary_expression_t *expression) /* 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 addr = create_symconst(dbgi, base_var->v.entity); ir_node *const base = deref_address(dbgi, base_var->base.type, addr); value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(value_type)); } @@ -2490,10 +2600,7 @@ static ir_node *unary_expression_to_firm(const unary_expression_t *expression) 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; @@ -2507,28 +2614,22 @@ static ir_node *unary_expression_to_firm(const unary_expression_t *expression) static ir_node *produce_condition_result(const expression_t *expression, ir_mode *mode, dbg_info *dbgi) { - ir_node *cur_block = get_cur_block(); - - ir_node *one_block = new_immBlock(); - set_cur_block(one_block); - ir_node *one = new_Const(get_mode_one(mode)); - ir_node *jmp_one = new_d_Jmp(dbgi); - - ir_node *zero_block = new_immBlock(); - set_cur_block(zero_block); - ir_node *zero = new_Const(get_mode_null(mode)); - ir_node *jmp_zero = new_d_Jmp(dbgi); - - set_cur_block(cur_block); + ir_node *const one_block = new_immBlock(); + ir_node *const zero_block = new_immBlock(); create_condition_evaluation(expression, one_block, zero_block); mature_immBlock(one_block); mature_immBlock(zero_block); - ir_node *in_cf[2] = { jmp_one, jmp_zero }; - new_Block(2, in_cf); + ir_node *const jmp_one = new_rd_Jmp(dbgi, one_block); + ir_node *const jmp_zero = new_rd_Jmp(dbgi, zero_block); + ir_node *const in_cf[2] = { jmp_one, jmp_zero }; + ir_node *const block = new_Block(lengthof(in_cf), in_cf); + set_cur_block(block); - ir_node *in[2] = { one, zero }; - ir_node *val = new_d_Phi(dbgi, 2, in, mode); + ir_node *const one = new_Const(get_mode_one(mode)); + ir_node *const zero = new_Const(get_mode_null(mode)); + ir_node *const in[2] = { one, zero }; + ir_node *const val = new_d_Phi(dbgi, lengthof(in), in, mode); return val; } @@ -2561,7 +2662,7 @@ static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression, case EXPR_BINARY_SHIFTRIGHT: case EXPR_BINARY_SHIFTLEFT_ASSIGN: case EXPR_BINARY_SHIFTRIGHT_ASSIGN: - mode = get_irn_mode(left); + mode = get_ir_mode_arithmetic(expression->base.type); right = create_conv(dbgi, right, mode_uint); break; @@ -2639,15 +2740,9 @@ normal_node: case EXPR_BINARY_DIV: case EXPR_BINARY_DIV_ASSIGN: { ir_node *pin = new_Pin(new_NoMem()); - ir_node *op; - ir_node *res; - if (mode_is_float(mode)) { - op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats); - res = new_d_Proj(dbgi, op, mode, pn_Quot_res); - } else { - op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats); - res = new_d_Proj(dbgi, op, mode, pn_Div_res); - } + ir_node *op = new_d_Div(dbgi, pin, left, right, mode, + op_pin_state_floats); + ir_node *res = new_d_Proj(dbgi, op, mode, pn_Div_res); return res; } case EXPR_BINARY_MOD: @@ -2670,7 +2765,7 @@ static ir_node *create_lazy_op(const binary_expression_t *expression) type_t *type = skip_typeref(expression->base.type); ir_mode *mode = get_ir_mode_arithmetic(type); - if (is_constant_expression(expression->left)) { + if (is_constant_expression(expression->left) == EXPR_CLASS_CONSTANT) { bool val = fold_constant_to_bool(expression->left); expression_kind_t ekind = expression->base.kind; assert(ekind == EXPR_BINARY_LOGICAL_AND || ekind == EXPR_BINARY_LOGICAL_OR); @@ -2684,11 +2779,9 @@ static ir_node *create_lazy_op(const binary_expression_t *expression) } } - if (is_constant_expression(expression->right)) { + if (is_constant_expression(expression->right) == EXPR_CLASS_CONSTANT) { bool valr = fold_constant_to_bool(expression->right); - return valr ? - new_Const(get_mode_one(mode)) : - new_Const(get_mode_null(mode)); + return create_Const_from_bool(mode, valr); } return produce_condition_result(expression->right, mode, dbgi); @@ -2740,13 +2833,12 @@ 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); @@ -2875,10 +2967,10 @@ static long get_offsetof_offset(const offsetof_expression_t *expression) static ir_node *offsetof_to_firm(const offsetof_expression_t *expression) { - ir_mode *mode = get_ir_mode_arithmetic(expression->base.type); - long offset = get_offsetof_offset(expression); - tarval *tv = new_tarval_from_long(offset, mode); - dbg_info *dbgi = get_dbg_info(&expression->base.source_position); + ir_mode *mode = get_ir_mode_arithmetic(expression->base.type); + long offset = get_offsetof_offset(expression); + ir_tarval *tv = new_tarval_from_long(offset, mode); + dbg_info *dbgi = get_dbg_info(&expression->base.source_position); return new_d_Const(dbgi, tv); } @@ -2900,8 +2992,6 @@ 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); @@ -2923,6 +3013,11 @@ static ir_node *sizeof_to_firm(const typeprop_expression_t *expression) && expression->tp_expression != NULL) { expression_to_firm(expression->tp_expression); } + /* strange gnu extensions: sizeof(function) == 1 */ + if (is_type_function(type)) { + ir_mode *mode = get_ir_mode_storage(type_size_t); + return new_Const(get_mode_one(mode)); + } return get_type_size_node(type); } @@ -2962,7 +3057,12 @@ static ir_node *alignof_to_firm(const typeprop_expression_t *expression) if (tp_expression != NULL) { entity_t *entity = get_expression_entity(tp_expression); if (entity != NULL) { - alignment = get_cparser_entity_alignment(entity); + if (entity->kind == ENTITY_FUNCTION) { + /* a gnu-extension */ + alignment = 1; + } else { + alignment = get_cparser_entity_alignment(entity); + } } } @@ -2971,15 +3071,15 @@ static ir_node *alignof_to_firm(const typeprop_expression_t *expression) alignment = get_type_alignment(type); } - dbg_info *dbgi = get_dbg_info(&expression->base.source_position); - ir_mode *mode = get_ir_mode_arithmetic(expression->base.type); - tarval *tv = new_tarval_from_long(alignment, mode); + 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); -static tarval *fold_constant_to_tarval(const expression_t *expression) +static ir_tarval *fold_constant_to_tarval(const expression_t *expression) { assert(is_type_valid(skip_typeref(expression->base.type))); @@ -2988,7 +3088,7 @@ static tarval *fold_constant_to_tarval(const expression_t *expression) init_ir_types(); - assert(is_constant_expression(expression)); + assert(is_constant_expression(expression) == EXPR_CLASS_CONSTANT); ir_graph *old_current_ir_graph = current_ir_graph; current_ir_graph = get_const_code_irg(); @@ -3002,8 +3102,7 @@ static tarval *fold_constant_to_tarval(const expression_t *expression) constant_folding = constant_folding_old; - tarval *tv = get_Const_tarval(cnst); - return tv; + return get_Const_tarval(cnst); } long fold_constant_to_int(const expression_t *expression) @@ -3011,7 +3110,7 @@ long fold_constant_to_int(const expression_t *expression) if (expression->kind == EXPR_INVALID) return 0; - tarval *tv = fold_constant_to_tarval(expression); + ir_tarval *tv = fold_constant_to_tarval(expression); if (!tarval_is_long(tv)) { panic("result of constant folding is not integer"); } @@ -3023,7 +3122,7 @@ bool fold_constant_to_bool(const expression_t *expression) { if (expression->kind == EXPR_INVALID) return false; - tarval *tv = fold_constant_to_tarval(expression); + ir_tarval *tv = fold_constant_to_tarval(expression); return !tarval_is_null(tv); } @@ -3032,7 +3131,7 @@ 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)) { + 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; @@ -3044,50 +3143,47 @@ static ir_node *conditional_to_firm(const conditional_expression_t *expression) } } - ir_node *cur_block = get_cur_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); - /* create the true block */ - ir_node *true_block = new_immBlock(); 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); - ir_node *true_val = expression->true_expression != NULL ? - expression_to_firm(expression->true_expression) : NULL; - ir_node *true_jmp = new_Jmp(); - - /* create the false block */ - ir_node *false_block = new_immBlock(); set_cur_block(false_block); - - ir_node *false_val = expression_to_firm(expression->false_expression); - ir_node *false_jmp = new_Jmp(); - - /* create the condition evaluation */ - set_cur_block(cur_block); - ir_node *const cond_expr = create_condition_evaluation(expression->condition, true_block, false_block); - if (expression->true_expression == NULL) { - if (cond_expr != NULL && 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)); - } - } - mature_immBlock(true_block); - mature_immBlock(false_block); + ir_node *const false_val = expression_to_firm(expression->false_expression); + ir_node *const false_jmp = new_d_Jmp(dbgi); /* create the common block */ - ir_node *in_cf[2] = { true_jmp, false_jmp }; - new_Block(2, in_cf); + ir_node *const in_cf[2] = { true_jmp, false_jmp }; + ir_node *const block = new_Block(lengthof(in_cf), in_cf); + set_cur_block(block); /* TODO improve static semantics, so either both or no values are NULL */ if (true_val == NULL || false_val == NULL) return NULL; - ir_node *in[2] = { true_val, false_val }; - ir_mode *mode = get_irn_mode(true_val); - assert(get_irn_mode(false_val) == mode); - ir_node *val = new_d_Phi(dbgi, 2, in, mode); + ir_node *const in[2] = { true_val, false_val }; + type_t *const type = skip_typeref(expression->base.type); + ir_mode *mode; + if (is_type_compound(type)) { + mode = mode_P; + } else { + mode = get_ir_mode_arithmetic(type); + } + ir_node *const val = new_d_Phi(dbgi, lengthof(in), in, mode); return val; } @@ -3226,7 +3322,6 @@ static ir_node *classify_type_to_firm(const classify_type_expression_t *const ex /* gcc classifies the referenced type */ case TYPE_REFERENCE: type = type->reference.refers_to; continue; - case TYPE_BUILTIN: /* typedef/typeof should be skipped already */ case TYPE_TYPEDEF: case TYPE_TYPEOF: @@ -3238,8 +3333,8 @@ static ir_node *classify_type_to_firm(const classify_type_expression_t *const ex } make_const:; - dbg_info *const dbgi = get_dbg_info(&expr->base.source_position); - tarval *const tv = new_tarval_from_long(tc, mode_int); + dbg_info *const dbgi = get_dbg_info(&expr->base.source_position); + ir_tarval *const tv = new_tarval_from_long(tc, mode_int); return new_d_Const(dbgi, tv); } @@ -3369,15 +3464,9 @@ 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_arithmetic(expression->base.type); - long v; - - if (is_constant_expression(expression->value)) { - v = 1; - } else { - v = 0; - } - return new_Const_long(mode, v); + ir_mode *const mode = get_ir_mode_arithmetic(expression->base.type); + bool const v = is_constant_expression(expression->value) == EXPR_CLASS_CONSTANT; + return create_Const_from_bool(mode, v); } static ir_node *builtin_types_compatible_to_firm( @@ -3385,9 +3474,9 @@ static ir_node *builtin_types_compatible_to_firm( { type_t *const left = get_unqualified_type(skip_typeref(expression->left)); type_t *const right = get_unqualified_type(skip_typeref(expression->right)); - long const value = types_compatible(left, right) ? 1 : 0; + bool const value = types_compatible(left, right); ir_mode *const mode = get_ir_mode_arithmetic(expression->base.type); - return new_Const_long(mode, value); + return create_Const_from_bool(mode, value); } static ir_node *get_label_block(label_t *label) @@ -3440,16 +3529,13 @@ static ir_node *_expression_to_firm(const expression_t *expression) #endif switch (expression->kind) { - case EXPR_CHARACTER_CONSTANT: - return character_constant_to_firm(&expression->conste); - case EXPR_WIDE_CHARACTER_CONSTANT: - return wide_character_constant_to_firm(&expression->conste); - case EXPR_CONST: - return const_to_firm(&expression->conste); + EXPR_LITERAL_CASES + return literal_to_firm(&expression->literal); case EXPR_STRING_LITERAL: - return string_literal_to_firm(&expression->string); + return string_to_firm(&expression->base.source_position, "str.%u", + &expression->literal.value); case EXPR_WIDE_STRING_LITERAL: - return wide_string_literal_to_firm(&expression->wide_string); + return wide_string_literal_to_firm(&expression->string_literal); case EXPR_REFERENCE: return reference_expression_to_firm(&expression->reference); case EXPR_REFERENCE_ENUM_VALUE: @@ -3559,15 +3645,14 @@ 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); + 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 */ @@ -3629,15 +3714,9 @@ static ir_node *create_condition_evaluation(const expression_t *expression, /* set branch prediction info based on __builtin_expect */ if (is_builtin_expect(expression) && is_Cond(cond)) { call_argument_t *argument = expression->call.arguments->next; - if (is_constant_expression(argument->expression)) { - 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; - } + if (is_constant_expression(argument->expression) == EXPR_CLASS_CONSTANT) { + bool const cnst = fold_constant_to_bool(argument->expression); + cond_jmp_predicate const pred = cnst ? COND_JMP_PRED_TRUE : COND_JMP_PRED_FALSE; set_Cond_jmp_pred(cond, pred); } } @@ -3645,7 +3724,7 @@ static ir_node *create_condition_evaluation(const expression_t *expression, add_immBlock_pred(true_block, true_proj); add_immBlock_pred(false_block, false_proj); - set_cur_block(NULL); + set_unreachable_now(); return cond_expr; } @@ -3668,14 +3747,8 @@ static void create_variable_entity(entity_t *variable, variable->declaration.kind = (unsigned char) declaration_kind; variable->variable.v.entity = irentity; - set_entity_variability(irentity, variability_uninitialized); set_entity_ld_ident(irentity, create_ld_ident(variable)); - if (parent_type == get_tls_type()) - set_entity_allocation(irentity, allocation_automatic); - else if (declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE) - set_entity_allocation(irentity, allocation_static); - if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) { set_entity_volatility(irentity, volatility_is_volatile); } @@ -3935,7 +4008,7 @@ static void advance_current_object(type_path_t *path) /* we're past the last member of the current sub-aggregate, try if we * can ascend in the type hierarchy and continue with another subobject */ - size_t len = ARR_LEN(path->path); + size_t len = ARR_LEN(path->path); if (len > 1) { ascend_from_subtype(path); @@ -4069,7 +4142,7 @@ static ir_initializer_t *create_ir_initializer_string( 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); @@ -4081,21 +4154,21 @@ static ir_initializer_t *create_ir_initializer_string( static ir_initializer_t *create_ir_initializer_wide_string( const initializer_wide_string_t *initializer, type_t *type) { - size_t string_len = initializer->string.size; assert(type->kind == TYPE_ARRAY); assert(type->array.size_constant); size_t len = type->array.size; + size_t string_len = wstrlen(&initializer->string); ir_initializer_t *irinitializer = create_initializer_compound(len); - const wchar_rep_t *string = initializer->string.begin; - ir_mode *mode = get_type_mode(ir_type_wchar_t); + const char *p = initializer->string.begin; + ir_mode *mode = get_type_mode(ir_type_wchar_t); for (size_t i = 0; i < len; ++i) { - wchar_rep_t c = 0; + utf32 c = 0; if (i < string_len) { - c = string[i]; + c = read_utf8_char(&p); } - tarval *tv = new_tarval_from_long(c, mode); + ir_tarval *tv = new_tarval_from_long(c, mode); ir_initializer_t *char_initializer = create_initializer_tarval(tv); set_initializer_compound_value(irinitializer, i, char_initializer); @@ -4127,17 +4200,70 @@ static ir_initializer_t *create_ir_initializer( panic("unknown initializer"); } +/** ANSI C §6.7.8:21: If there are fewer initializers [..] than there + * are elements [...] the remainder of the aggregate shall be initialized + * implicitly the same as objects that have static storage duration. */ +static void create_dynamic_null_initializer(ir_entity *entity, dbg_info *dbgi, + ir_node *base_addr) +{ + /* for unions we must NOT do anything for null initializers */ + ir_type *owner = get_entity_owner(entity); + if (is_Union_type(owner)) { + return; + } + + ir_type *ent_type = get_entity_type(entity); + /* create sub-initializers for a compound type */ + if (is_compound_type(ent_type)) { + unsigned n_members = get_compound_n_members(ent_type); + for (unsigned n = 0; n < n_members; ++n) { + ir_entity *member = get_compound_member(ent_type, n); + ir_node *addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, + member); + create_dynamic_null_initializer(member, dbgi, addr); + } + return; + } + if (is_Array_type(ent_type)) { + assert(has_array_upper_bound(ent_type, 0)); + long n = get_array_upper_bound_int(ent_type, 0); + for (long i = 0; i < n; ++i) { + ir_tarval *index_tv = new_tarval_from_long(i, mode_uint); + ir_node *cnst = new_d_Const(dbgi, index_tv); + ir_node *in[1] = { cnst }; + ir_entity *arrent = get_array_element_entity(ent_type); + ir_node *addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, + arrent); + create_dynamic_null_initializer(arrent, dbgi, addr); + } + return; + } + + ir_mode *value_mode = get_type_mode(ent_type); + ir_node *node = new_Const(get_mode_null(value_mode)); + + /* is it a bitfield type? */ + if (is_Primitive_type(ent_type) && + get_primitive_base_type(ent_type) != NULL) { + bitfield_store_to_firm(dbgi, entity, base_addr, node, false); + return; + } + + ir_node *mem = get_store(); + ir_node *store = new_d_Store(dbgi, mem, base_addr, node, cons_none); + ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M); + set_store(proj_m); +} + static void create_dynamic_initializer_sub(ir_initializer_t *initializer, ir_entity *entity, ir_type *type, dbg_info *dbgi, ir_node *base_addr) { switch(get_initializer_kind(initializer)) { - case IR_INITIALIZER_NULL: { - /* NULL is undefined for dynamic initializers */ + case IR_INITIALIZER_NULL: + create_dynamic_null_initializer(entity, dbgi, base_addr); return; - } case IR_INITIALIZER_CONST: { ir_node *node = get_initializer_const_value(initializer); - ir_mode *mode = get_irn_mode(node); ir_type *ent_type = get_entity_type(entity); /* is it a bitfield type? */ @@ -4147,7 +4273,7 @@ static void create_dynamic_initializer_sub(ir_initializer_t *initializer, return; } - assert(get_type_mode(type) == mode); + assert(get_type_mode(type) == get_irn_mode(node)); ir_node *mem = get_store(); ir_node *store = new_d_Store(dbgi, mem, base_addr, node, cons_none); ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M); @@ -4155,10 +4281,9 @@ static void create_dynamic_initializer_sub(ir_initializer_t *initializer, return; } case IR_INITIALIZER_TARVAL: { - tarval *tv = get_initializer_tarval_value(initializer); - ir_mode *mode = get_tarval_mode(tv); - ir_node *cnst = new_d_Const(dbgi, tv); - ir_type *ent_type = get_entity_type(entity); + ir_tarval *tv = get_initializer_tarval_value(initializer); + ir_node *cnst = new_d_Const(dbgi, tv); + ir_type *ent_type = get_entity_type(entity); /* is it a bitfield type? */ if (is_Primitive_type(ent_type) && @@ -4167,7 +4292,7 @@ static void create_dynamic_initializer_sub(ir_initializer_t *initializer, return; } - assert(get_type_mode(type) == mode); + assert(get_type_mode(type) == get_tarval_mode(tv)); ir_node *mem = get_store(); ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst, cons_none); ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M); @@ -4175,7 +4300,7 @@ static void create_dynamic_initializer_sub(ir_initializer_t *initializer, return; } case IR_INITIALIZER_COMPOUND: { - assert(is_compound_type(type)); + assert(is_compound_type(type) || is_Array_type(type)); int n_members; if (is_Array_type(type)) { assert(has_array_upper_bound(type, 0)); @@ -4193,7 +4318,7 @@ static void create_dynamic_initializer_sub(ir_initializer_t *initializer, ir_type *irtype; ir_entity *sub_entity; if (is_Array_type(type)) { - tarval *index_tv = new_tarval_from_long(i, mode_uint); + ir_tarval *index_tv = new_tarval_from_long(i, mode_uint); ir_node *cnst = new_d_Const(dbgi, index_tv); ir_node *in[1] = { cnst }; irtype = get_array_element_type(type); @@ -4247,7 +4372,7 @@ 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; @@ -4276,13 +4401,12 @@ static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi, ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi); set_entity_ld_ident(init_entity, id); - set_entity_variability(init_entity, variability_initialized); - set_entity_visibility(init_entity, visibility_local); - set_entity_allocation(init_entity, allocation_static); + set_entity_visibility(init_entity, ir_visibility_private); + add_entity_linkage(init_entity, IR_LINKAGE_CONSTANT); set_entity_initializer(init_entity, irinitializer); - ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity); + ir_node *const src_addr = create_symconst(dbgi, init_entity); ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype); ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M); @@ -4323,8 +4447,8 @@ static void create_variable_initializer(entity_t *entity) 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); + type_t *init_type = initializer_value->value->base.type; + ir_mode *mode = get_ir_mode_storage(init_type); value = create_conv(dbgi, value, mode); value = do_strict_conv(dbgi, value); @@ -4335,10 +4459,9 @@ static void create_variable_initializer(entity_t *entity) ir_entity *irentity = entity->variable.v.entity; - if (tq & TYPE_QUALIFIER_CONST) { - set_entity_variability(irentity, variability_constant); - } else { - set_entity_variability(irentity, variability_initialized); + if (tq & TYPE_QUALIFIER_CONST + && get_entity_owner(irentity) != get_tls_type()) { + add_entity_linkage(irentity, IR_LINKAGE_CONSTANT); } set_atomic_ent_value(irentity, value); } @@ -4351,9 +4474,7 @@ static void create_variable_initializer(entity_t *entity) = create_ir_initializer(initializer, type); if (tq & TYPE_QUALIFIER_CONST) { - set_entity_variability(irentity, variability_constant); - } else { - set_entity_variability(irentity, variability_initialized); + add_entity_linkage(irentity, IR_LINKAGE_CONSTANT); } set_entity_initializer(irentity, irinitializer); } @@ -4375,7 +4496,7 @@ static void allocate_variable_length_array(entity_t *entity) { assert(entity->kind == ENTITY_VARIABLE); assert(entity->variable.initializer == NULL); - assert(get_cur_block() != NULL); + assert(currently_reachable()); dbg_info *dbgi = get_dbg_info(&entity->base.source_position); type_t *type = entity->declaration.type; @@ -4444,8 +4565,7 @@ static void create_local_static_variable(entity_t *entity) size_t l = strlen(entity->base.symbol->string); char buf[l + sizeof(".%u")]; snprintf(buf, sizeof(buf), "%s.%%u", entity->base.symbol->string); - ident *const id = id_unique(buf); - + ident *const id = id_unique(buf); ir_entity *const irentity = new_d_entity(var_type, id, irtype, dbgi); if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) { @@ -4456,10 +4576,7 @@ static void create_local_static_variable(entity_t *entity) entity->variable.v.entity = irentity; set_entity_ld_ident(irentity, id); - set_entity_variability(irentity, variability_uninitialized); - set_entity_visibility(irentity, visibility_local); - set_entity_allocation(irentity, entity->variable.thread_local ? - allocation_automatic : allocation_static); + set_entity_visibility(irentity, ir_visibility_local); ir_graph *const old_current_ir_graph = current_ir_graph; current_ir_graph = get_const_code_irg(); @@ -4474,14 +4591,13 @@ static void create_local_static_variable(entity_t *entity) static void return_statement_to_firm(return_statement_t *statement) { - if (get_cur_block() == NULL) + if (!currently_reachable()) return; dbg_info *dbgi = get_dbg_info(&statement->base.source_position); type_t *type = current_function_entity->declaration.type; ir_type *func_irtype = get_ir_type(type); - ir_node *in[1]; int in_len; if (get_method_n_ress(func_irtype) > 0) { @@ -4490,10 +4606,10 @@ static void return_statement_to_firm(return_statement_t *statement) if (statement->value != NULL) { ir_node *node = expression_to_firm(statement->value); 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); + type_t *ret_value_type = statement->value->base.type; + ir_mode *mode = get_ir_mode_storage(ret_value_type); + node = create_conv(dbgi, node, mode); + node = do_strict_conv(dbgi, node); } in[0] = node; } else { @@ -4520,12 +4636,12 @@ static void return_statement_to_firm(return_statement_t *statement) ir_node *end_block = get_irg_end_block(current_ir_graph); add_immBlock_pred(end_block, ret); - set_cur_block(NULL); + set_unreachable_now(); } static ir_node *expression_statement_to_firm(expression_statement_t *statement) { - if (get_cur_block() == NULL) + if (!currently_reachable()) return NULL; return expression_to_firm(statement->expression); @@ -4558,22 +4674,36 @@ static ir_node *compound_statement_to_firm(compound_statement_t *compound) static void create_global_variable(entity_t *entity) { + ir_linkage linkage = IR_LINKAGE_DEFAULT; + ir_visibility visibility = ir_visibility_default; + ir_entity *irentity; assert(entity->kind == ENTITY_VARIABLE); - ir_visibility vis; switch ((storage_class_tag_t)entity->declaration.storage_class) { - case STORAGE_CLASS_STATIC: vis = visibility_local; break; - case STORAGE_CLASS_EXTERN: vis = visibility_external_allocated; break; - case STORAGE_CLASS_NONE: vis = visibility_external_visible; break; - - default: panic("Invalid storage class for global variable"); + case STORAGE_CLASS_EXTERN: visibility = ir_visibility_external; break; + case STORAGE_CLASS_STATIC: visibility = ir_visibility_local; break; + case STORAGE_CLASS_NONE: + visibility = ir_visibility_default; + /* uninitialized globals get merged in C */ + if (entity->variable.initializer == NULL) + linkage |= IR_LINKAGE_MERGE; + break; + case STORAGE_CLASS_TYPEDEF: + case STORAGE_CLASS_AUTO: + case STORAGE_CLASS_REGISTER: + panic("invalid storage class for global var"); } - ir_type *var_type = entity->variable.thread_local ? - get_tls_type() : get_glob_type(); - create_variable_entity(entity, - DECLARATION_KIND_GLOBAL_VARIABLE, var_type); - set_entity_visibility(entity->variable.v.entity, vis); + ir_type *var_type = get_glob_type(); + if (entity->variable.thread_local) { + var_type = get_tls_type(); + /* LINKAGE_MERGE not supported by current linkers */ + linkage &= ~IR_LINKAGE_MERGE; + } + create_variable_entity(entity, DECLARATION_KIND_GLOBAL_VARIABLE, var_type); + irentity = entity->variable.v.entity; + add_entity_linkage(irentity, linkage); + set_entity_visibility(irentity, visibility); } static void create_local_declaration(entity_t *entity) @@ -4632,7 +4762,7 @@ static void initialize_local_declaration(entity_t *entity) // no need to emit code in dead blocks if (entity->declaration.storage_class != STORAGE_CLASS_STATIC - && get_cur_block() == NULL) + && !currently_reachable()) return; switch ((declaration_kind_t) entity->declaration.kind) { @@ -4686,145 +4816,125 @@ static void declaration_statement_to_firm(declaration_statement_t *statement) 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(); - set_cur_block(true_block); - 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); - } + /* Create the condition. */ + ir_node *true_block = NULL; + ir_node *false_block = NULL; + if (currently_reachable()) { + true_block = new_immBlock(); + false_block = new_immBlock(); + create_condition_evaluation(statement->condition, true_block, false_block); + mature_immBlock(true_block); } - /* the false (blocks) */ - ir_node *false_block = NULL; + /* 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) { - false_block = new_immBlock(); + if (false_block != NULL) { + mature_immBlock(false_block); + } set_cur_block(false_block); - statement_to_firm(statement->false_statement); - if (get_cur_block() != NULL) { - ir_node *jmp = new_Jmp(); - if (fallthrough_block == NULL) - fallthrough_block = new_immBlock(); - add_immBlock_pred(fallthrough_block, jmp); + if (currently_reachable()) { + fallthrough_block = new_immBlock(); + add_immBlock_pred(fallthrough_block, new_Jmp()); } + } else { + fallthrough_block = false_block; } - /* create the condition */ - if (cur_block != NULL) { - if (true_block == NULL || false_block == NULL) { - if (fallthrough_block == NULL) - fallthrough_block = new_immBlock(); - if (true_block == NULL) - true_block = fallthrough_block; - if (false_block == NULL) - false_block = fallthrough_block; + /* Create the true statement. */ + set_cur_block(true_block); + statement_to_firm(statement->true_statement); + if (currently_reachable()) { + if (fallthrough_block == NULL) { + fallthrough_block = new_immBlock(); } - - set_cur_block(cur_block); - create_condition_evaluation(statement->condition, true_block, - false_block); + add_immBlock_pred(fallthrough_block, new_Jmp()); } - mature_immBlock(true_block); - if (false_block != fallthrough_block && false_block != NULL) { - mature_immBlock(false_block); - } + /* Handle the block after the if-statement. */ if (fallthrough_block != NULL) { mature_immBlock(fallthrough_block); } - set_cur_block(fallthrough_block); } +/* 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 *const pred = currently_reachable() ? new_Jmp() : new_Bad(mode_X); + add_immBlock_pred(target_block, pred); +} + static void while_statement_to_firm(while_statement_t *statement) { - ir_node *jmp = NULL; - if (get_cur_block() != NULL) { - jmp = new_Jmp(); - } + /* 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; - /* create the header block */ - ir_node *header_block = new_immBlock(); - if (jmp != NULL) { - add_immBlock_pred(header_block, jmp); + keep_alive(header_block); + keep_all_memory(header_block); + } else { + 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); } - /* the loop body */ - ir_node *old_continue_label = continue_label; - ir_node *old_break_label = break_label; - continue_label = header_block; - break_label = NULL; + ir_node *const old_continue_label = continue_label; + ir_node *const old_break_label = break_label; + continue_label = header_block; + break_label = false_block; - ir_node *body_block = new_immBlock(); + /* Create the loop body. */ set_cur_block(body_block); statement_to_firm(statement->body); - ir_node *false_block = break_label; - - assert(continue_label == header_block); - continue_label = old_continue_label; - break_label = old_break_label; - - if (get_cur_block() != NULL) { - jmp = new_Jmp(); - add_immBlock_pred(header_block, jmp); - } - - /* shortcut for while(true) */ - if (is_constant_expression(statement->condition) - && fold_constant_to_bool(statement->condition) != 0) { - set_cur_block(header_block); - ir_node *header_jmp = new_Jmp(); - add_immBlock_pred(body_block, header_jmp); - - keep_alive(body_block); - keep_all_memory(body_block); - set_cur_block(body_block); - } else { - if (false_block == NULL) { - false_block = new_immBlock(); - } - - /* create the condition */ - set_cur_block(header_block); + jump_if_reachable(header_block); - create_condition_evaluation(statement->condition, body_block, - false_block); - } - - mature_immBlock(body_block); mature_immBlock(header_block); + assert(false_block == NULL || false_block == break_label); + false_block = break_label; if (false_block != NULL) { mature_immBlock(false_block); } - set_cur_block(false_block); + + assert(continue_label == header_block); + continue_label = old_continue_label; + break_label = old_break_label; } -static void do_while_statement_to_firm(do_while_statement_t *statement) +static ir_node *get_break_label(void) { - ir_node *jmp = NULL; - if (get_cur_block() != NULL) { - jmp = new_Jmp(); + if (break_label == NULL) { + break_label = new_immBlock(); } + return break_label; +} +static void do_while_statement_to_firm(do_while_statement_t *statement) +{ /* create the header block */ ir_node *header_block = new_immBlock(); /* the loop body */ ir_node *body_block = new_immBlock(); - if (jmp != NULL) { - add_immBlock_pred(body_block, jmp); - } + jump_if_reachable(body_block); ir_node *old_continue_label = continue_label; ir_node *old_break_label = break_label; @@ -4833,28 +4943,20 @@ static void do_while_statement_to_firm(do_while_statement_t *statement) set_cur_block(body_block); statement_to_firm(statement->body); - ir_node *false_block = break_label; + ir_node *const false_block = get_break_label(); assert(continue_label == header_block); continue_label = old_continue_label; break_label = old_break_label; - if (get_cur_block() != NULL) { - ir_node *body_jmp = new_Jmp(); - add_immBlock_pred(header_block, body_jmp); - mature_immBlock(header_block); - } - - if (false_block == NULL) { - false_block = new_immBlock(); - } + jump_if_reachable(header_block); /* create the condition */ + mature_immBlock(header_block); set_cur_block(header_block); create_condition_evaluation(statement->condition, body_block, false_block); mature_immBlock(body_block); - mature_immBlock(header_block); mature_immBlock(false_block); set_cur_block(false_block); @@ -4862,8 +4964,6 @@ static void do_while_statement_to_firm(do_while_statement_t *statement) static void for_statement_to_firm(for_statement_t *statement) { - ir_node *jmp = NULL; - /* create declarations */ entity_t *entity = statement->scope.entities; for ( ; entity != NULL; entity = entity->base.next) { @@ -4873,7 +4973,7 @@ static void for_statement_to_firm(for_statement_t *statement) create_local_declaration(entity); } - if (get_cur_block() != NULL) { + if (currently_reachable()) { entity = statement->scope.entities; for ( ; entity != NULL; entity = entity->base.next) { if (!is_declaration(entity)) @@ -4885,95 +4985,80 @@ static void for_statement_to_firm(for_statement_t *statement) if (statement->initialisation != NULL) { expression_to_firm(statement->initialisation); } - - jmp = new_Jmp(); - } - - - /* create the step block */ - ir_node *const step_block = new_immBlock(); - set_cur_block(step_block); - if (statement->step != NULL) { - expression_to_firm(statement->step); } - ir_node *const step_jmp = new_Jmp(); - /* create the header block */ + /* Create the header block */ ir_node *const header_block = new_immBlock(); - set_cur_block(header_block); - if (jmp != NULL) { - add_immBlock_pred(header_block, jmp); - } - add_immBlock_pred(header_block, step_jmp); + jump_if_reachable(header_block); - /* the false block */ - ir_node *const false_block = new_immBlock(); - - /* the loop body */ + /* Create the condition. */ ir_node *body_block; - if (statement->body != NULL) { - ir_node *const old_continue_label = continue_label; - ir_node *const old_break_label = break_label; - continue_label = step_block; - break_label = false_block; - - body_block = new_immBlock(); - set_cur_block(body_block); - statement_to_firm(statement->body); - - assert(continue_label == step_block); - assert(break_label == false_block); - continue_label = old_continue_label; - break_label = old_break_label; - - if (get_cur_block() != NULL) { - jmp = new_Jmp(); - add_immBlock_pred(step_block, jmp); - } - } else { - body_block = step_block; - } - - /* create the condition */ - set_cur_block(header_block); + ir_node *false_block; if (statement->condition != NULL) { - create_condition_evaluation(statement->condition, body_block, - false_block); + body_block = new_immBlock(); + false_block = new_immBlock(); + + set_cur_block(header_block); + create_condition_evaluation(statement->condition, body_block, false_block); + mature_immBlock(body_block); } else { + /* for-ever. */ + body_block = header_block; + false_block = NULL; + keep_alive(header_block); keep_all_memory(header_block); - jmp = new_Jmp(); - add_immBlock_pred(body_block, jmp); } - mature_immBlock(body_block); - mature_immBlock(false_block); - mature_immBlock(step_block); - mature_immBlock(header_block); - mature_immBlock(false_block); + /* Create the step block, if necessary. */ + ir_node * step_block = header_block; + expression_t *const step = statement->step; + if (step != NULL) { + step_block = new_immBlock(); + } + + ir_node *const old_continue_label = continue_label; + ir_node *const old_break_label = break_label; + continue_label = step_block; + break_label = false_block; + + /* Create the loop body. */ + set_cur_block(body_block); + statement_to_firm(statement->body); + jump_if_reachable(step_block); + + /* Create the step code. */ + if (step != NULL) { + mature_immBlock(step_block); + set_cur_block(step_block); + expression_to_firm(step); + jump_if_reachable(header_block); + } + mature_immBlock(header_block); + assert(false_block == NULL || false_block == break_label); + false_block = break_label; + if (false_block != NULL) { + mature_immBlock(false_block); + } set_cur_block(false_block); + + assert(continue_label == step_block); + continue_label = old_continue_label; + break_label = old_break_label; } static void create_jump_statement(const statement_t *statement, ir_node *target_block) { - if (get_cur_block() == NULL) + if (!currently_reachable()) return; dbg_info *dbgi = get_dbg_info(&statement->base.source_position); ir_node *jump = new_d_Jmp(dbgi); add_immBlock_pred(target_block, jump); - set_cur_block(NULL); -} - -static ir_node *get_break_label(void) -{ - if (break_label == NULL) { - break_label = new_immBlock(); - } - return break_label; + set_unreachable_now(); } static void switch_statement_to_firm(switch_statement_t *statement) @@ -4982,13 +5067,13 @@ static void switch_statement_to_firm(switch_statement_t *statement) dbg_info *dbgi = get_dbg_info(&statement->base.source_position); ir_node *cond = NULL; - if (get_cur_block() != NULL) { + if (currently_reachable()) { ir_node *expression = expression_to_firm(statement->expression); cond = new_d_Cond(dbgi, expression); first_block = get_cur_block(); } - set_cur_block(NULL); + set_unreachable_now(); ir_node *const old_switch_cond = current_switch_cond; ir_node *const old_break_label = break_label; @@ -5000,8 +5085,8 @@ static void switch_statement_to_firm(switch_statement_t *statement) current_switch = statement; /* determine a free number for the default label */ - unsigned long num_cases = 0; - long def_nr = 0; + unsigned long num_cases = 0; + long default_proj_nr = 0; for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) { if (l->expression == NULL) { /* default case */ @@ -5009,18 +5094,18 @@ static void switch_statement_to_firm(switch_statement_t *statement) } if (l->last_case >= l->first_case) num_cases += l->last_case - l->first_case + 1; - if (l->last_case > def_nr) - def_nr = l->last_case; + if (l->last_case > default_proj_nr) + default_proj_nr = l->last_case; } - if (def_nr == INT_MAX) { + if (default_proj_nr == LONG_MAX) { /* Bad: an overflow will occur, we cannot be sure that the * maximum + 1 is a free number. Scan the values a second * time to find a free number. */ unsigned char *bits = xmalloc((num_cases + 7) >> 3); - memset(bits, 0, (num_cases + 7) >> 3); + memset(bits, 0, (num_cases + 7) >> 3); for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) { if (l->expression == NULL) { /* default case */ @@ -5046,25 +5131,23 @@ static void switch_statement_to_firm(switch_statement_t *statement) break; free(bits); - def_nr = i; + default_proj_nr = i; } else { - ++def_nr; + ++default_proj_nr; } - statement->default_proj_nr = def_nr; - - if (statement->body != NULL) { - statement_to_firm(statement->body); + statement->default_proj_nr = default_proj_nr; + /* safety check: cond might already be folded to a Bad */ + if (cond != NULL && is_Cond(cond)) { + set_Cond_default_proj(cond, default_proj_nr); } - if (get_cur_block() != NULL) { - ir_node *jmp = new_Jmp(); - add_immBlock_pred(get_break_label(), jmp); - } + statement_to_firm(statement->body); + + jump_if_reachable(get_break_label()); if (!saw_default_label && first_block != NULL) { set_cur_block(first_block); - ir_node *const proj = new_d_defaultProj(dbgi, cond, - statement->default_proj_nr); + ir_node *const proj = new_d_Proj(dbgi, cond, mode_X, default_proj_nr); add_immBlock_pred(get_break_label(), proj); } @@ -5085,65 +5168,51 @@ static void case_label_to_firm(const case_label_statement_t *statement) if (statement->is_empty_range) return; - dbg_info *dbgi = get_dbg_info(&statement->base.source_position); - - ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp()); - - ir_node *proj; ir_node *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 { - proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn); + 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; - proj = new_d_defaultProj(dbgi, current_switch_cond, - current_switch->default_proj_nr); - + ir_node *const proj = new_d_Proj(dbgi, current_switch_cond, mode_X, + current_switch->default_proj_nr); add_immBlock_pred(block, proj); } } - if (fallthrough != NULL) { - add_immBlock_pred(block, fallthrough); - } mature_immBlock(block); set_cur_block(block); - if (statement->statement != NULL) { - statement_to_firm(statement->statement); - } + statement_to_firm(statement->statement); } static void label_to_firm(const label_statement_t *statement) { ir_node *block = get_label_block(statement->label); - - if (get_cur_block() != NULL) { - ir_node *jmp = new_Jmp(); - add_immBlock_pred(block, jmp); - } + jump_if_reachable(block); set_cur_block(block); keep_alive(block); keep_all_memory(block); - if (statement->statement != NULL) { - statement_to_firm(statement->statement); - } + statement_to_firm(statement->statement); } static void goto_to_firm(const goto_statement_t *statement) { - if (get_cur_block() == NULL) + if (!currently_reachable()) return; if (statement->expression) { @@ -5158,7 +5227,7 @@ static void goto_to_firm(const goto_statement_t *statement) ir_node *jmp = new_Jmp(); add_immBlock_pred(block, jmp); } - set_cur_block(NULL); + set_unreachable_now(); } static void asm_statement_to_firm(const asm_statement_t *statement) @@ -5221,20 +5290,19 @@ static void asm_statement_to_firm(const asm_statement_t *statement) asm_constraint_flags_t asm_flags = be_parse_asm_constraints(constraints); - if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) { - warningf(&statement->base.source_position, - "some constraints in '%s' are not supported", constraints); - } - if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) { - errorf(&statement->base.source_position, - "some constraints in '%s' are invalid", constraints); - continue; - } - if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) { - errorf(&statement->base.source_position, - "no write flag specified for output constraints '%s'", - constraints); - continue; + { + source_position_t const *const pos = &statement->base.source_position; + if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) { + warningf(WARN_OTHER, pos, "some constraints in '%s' are not supported", constraints); + } + if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) { + errorf(pos, "some constraints in '%s' are invalid", constraints); + continue; + } + if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) { + errorf(pos, "no write flag specified for output constraints '%s'", constraints); + continue; + } } unsigned pos = next_pos++; @@ -5388,7 +5456,7 @@ static void asm_statement_to_firm(const asm_statement_t *statement) /* create output projs & connect them */ if (needs_memory) { - ir_node *projm = new_Proj(node, mode_M, out_size+1); + ir_node *projm = new_Proj(node, mode_M, out_size); set_store(projm); } @@ -5404,13 +5472,14 @@ static void asm_statement_to_firm(const asm_statement_t *statement) } } -static void ms_try_statement_to_firm(ms_try_statement_t *statement) +static void ms_try_statement_to_firm(ms_try_statement_t *statement) { statement_to_firm(statement->try_statement); - warningf(&statement->base.source_position, "structured exception handling ignored"); + source_position_t const *const pos = &statement->base.source_position; + warningf(WARN_OTHER, pos, "structured exception handling ignored"); } -static void leave_statement_to_firm(leave_statement_t *statement) +static void leave_statement_to_firm(leave_statement_t *statement) { errorf(&statement->base.source_position, "__leave not supported yet"); } @@ -5556,13 +5625,12 @@ static void initialize_function_parameters(entity_t *entity) assert(entity->kind == ENTITY_FUNCTION); ir_graph *irg = current_ir_graph; ir_node *args = get_irg_args(irg); - ir_node *start_block = get_irg_start_block(irg); ir_type *function_irtype = get_ir_type(entity->declaration.type); int first_param_nr = 0; if (entity->function.need_closure) { /* add an extra parameter for the static link */ - entity->function.static_link = new_r_Proj(start_block, args, mode_P_data, 0); + entity->function.static_link = new_r_Proj(args, mode_P_data, 0); ++first_param_nr; } @@ -5582,13 +5650,13 @@ static void initialize_function_parameters(entity_t *entity) } if (needs_entity) { - ir_entity *entity = get_method_value_param_ent(function_irtype, n); - ident *id = new_id_from_str(parameter->base.symbol->string); - set_entity_ident(entity, id); + ir_entity *param = get_method_value_param_ent(function_irtype, n); + ident *id = new_id_from_str(parameter->base.symbol->string); + set_entity_ident(param, id); parameter->declaration.kind = DECLARATION_KIND_PARAMETER_ENTITY; - parameter->parameter.v.entity = entity; + parameter->parameter.v.entity = param; continue; } @@ -5596,7 +5664,7 @@ static void initialize_function_parameters(entity_t *entity) ir_mode *param_mode = get_type_mode(param_irtype); long pn = n + first_param_nr; - ir_node *value = new_r_Proj(start_block, args, param_mode, pn); + ir_node *value = new_r_Proj(args, param_mode, pn); ir_mode *mode = get_ir_mode_storage(type); value = create_conv(NULL, value, mode); @@ -5623,22 +5691,22 @@ static void handle_decl_modifier_irg(ir_graph_ptr irg, { if (decl_modifiers & DM_RETURNS_TWICE) { /* TRUE if the declaration includes __attribute__((returns_twice)) */ - set_irg_additional_property(irg, mtp_property_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 @@ -5656,17 +5724,22 @@ static void add_function_pointer(ir_type *segment, ir_entity *method, const char *unique_template) { ir_type *method_type = get_entity_type(method); - ident *id = id_unique(unique_template); - ir_type *ptr_type = new_type_pointer(id, method_type, mode_P_code); + ir_type *ptr_type = new_type_pointer(method_type); + /* these entities don't really have a name but firm only allows + * "" in ld_ident. + * Note that we mustn't give these entities a name since for example + * Mach-O doesn't allow them. */ ident *ide = id_unique(unique_template); ir_entity *ptr = new_entity(segment, ide, ptr_type); ir_graph *irg = get_const_code_irg(); ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code, - method, NULL); + method); + set_entity_ld_ident(ptr, new_id_from_chars("", 0)); set_entity_compiler_generated(ptr, 1); - set_entity_variability(ptr, variability_constant); + set_entity_visibility(ptr, ir_visibility_private); + add_entity_linkage(ptr, IR_LINKAGE_CONSTANT|IR_LINKAGE_HIDDEN_USER); set_atomic_ent_value(ptr, val); } @@ -5694,7 +5767,7 @@ static void create_function(entity_t *entity) if (entity->function.statement == NULL) return; - if (is_main(entity) && firm_opt.os_support == OS_SUPPORT_MINGW) { + if (is_main(entity) && enable_main_collect2_hack) { prepare_main_collect2(entity); } @@ -5720,13 +5793,15 @@ static void create_function(entity_t *entity) int n_local_vars = get_function_n_local_vars(entity); ir_graph *irg = new_ir_graph(function_entity, n_local_vars); + current_ir_graph = irg; ir_graph *old_current_function = current_function; current_function = irg; - set_irg_fp_model(irg, firm_opt.fp_model); + set_irg_fp_model(irg, firm_fp_model); tarval_enable_fp_ops(1); - set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity)); + set_irn_dbg_info(get_irg_start_block(irg), + get_entity_dbg_info(function_entity)); ir_node *first_block = get_cur_block(); @@ -5744,7 +5819,7 @@ static void create_function(entity_t *entity) ir_node *end_block = get_irg_end_block(irg); /* do we have a return statement yet? */ - if (get_cur_block() != NULL) { + if (currently_reachable()) { type_t *type = skip_typeref(entity->declaration.type); assert(is_type_function(type)); const function_type_t *func_type = &type->function; @@ -5786,9 +5861,8 @@ static void create_function(entity_t *entity) if (has_computed_gotos) { /* if we have computed goto's in the function, we cannot inline it */ if (get_irg_inline_property(irg) >= irg_inline_recomended) { - warningf(&entity->base.source_position, - "function '%Y' can never be inlined because it contains a computed goto", - entity->base.symbol); + source_position_t const *const pos = &entity->base.source_position; + warningf(WARN_OTHER, pos, "'%N' can never be inlined because it contains a computed goto", entity); } set_irg_inline_property(irg, irg_inline_forbidden); } @@ -5807,8 +5881,8 @@ static void create_function(entity_t *entity) int align_all = 4; int offset = 0; for (int i = 0; i < n; ++i) { - ir_entity *entity = get_compound_member(frame_type, i); - ir_type *entity_type = get_entity_type(entity); + ir_entity *member = get_compound_member(frame_type, i); + ir_type *entity_type = get_entity_type(member); int align = get_type_alignment_bytes(entity_type); if (align > align_all) @@ -5821,13 +5895,13 @@ static void create_function(entity_t *entity) } } - set_entity_offset(entity, offset); + set_entity_offset(member, offset); offset += get_type_size_bytes(entity_type); } set_type_size_bytes(frame_type, offset); set_type_alignment_bytes(frame_type, align_all); - irg_vrfy(irg); + irg_verify(irg, VERIFY_ENFORCE_SSA); current_function = old_current_function; if (current_trampolines != NULL) { @@ -5900,21 +5974,7 @@ void init_ast2firm(void) init_atomic_modes(); ir_set_debug_retrieve(dbg_retrieve); - - /* OS option must be set to the backend */ - switch (firm_opt.os_support) { - case OS_SUPPORT_MINGW: - create_ld_ident = create_name_win32; - break; - case OS_SUPPORT_LINUX: - create_ld_ident = create_name_linux_elf; - break; - case OS_SUPPORT_MACHO: - create_ld_ident = create_name_macho; - break; - default: - panic("unexpected OS support mode"); - } + ir_set_type_debug_retrieve(dbg_print_type_dbg_info); /* create idents for all known runtime functions */ for (size_t i = 0; i < lengthof(rts_data); ++i) { @@ -5968,6 +6028,10 @@ static void global_asm_to_firm(statement_t *s) void translation_unit_to_firm(translation_unit_t *unit) { + /* initialize firm arithmetic */ + tarval_set_integer_overflow_mode(TV_OVERFLOW_WRAP); + ir_set_uninitialized_local_variable_func(uninitialized_local_var); + /* just to be sure */ continue_label = NULL; break_label = NULL;