X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ast2firm.c;h=3a2e22078c2d92f66a5a880125317918851b5689;hb=4108d31ed34aee3c0841ae01b844420da8a3cdf1;hp=fe08af784418d2dcb5d90fcd213d318c7b2f26a5;hpb=af68c03294e66240e0fc7d212b5117f81684f893;p=cparser diff --git a/ast2firm.c b/ast2firm.c index fe08af7..3a2e220 100644 --- a/ast2firm.c +++ b/ast2firm.c @@ -25,6 +25,7 @@ #include #include +#include #include "ast2firm.h" @@ -38,11 +39,17 @@ #include "diagnostic.h" #include "lang_features.h" #include "types.h" +#include "warning.h" +#include "entitymap_t.h" #include "driver/firm_opt.h" #include "driver/firm_cmdline.h" #define MAGIC_DEFAULT_PN_NUMBER (long) -314159265 +/* some idents needed for name mangling */ +static ident *id_underscore; +static ident *id_imp; + static ir_type *ir_type_const_char; static ir_type *ir_type_wchar_t; static ir_type *ir_type_void; @@ -56,9 +63,13 @@ static ir_node *break_label; static ir_node *current_switch_cond; static bool saw_default_label; static ir_node **imature_blocks; +static bool constant_folding; static const declaration_t *current_function_decl; static ir_node *current_function_name; +static ir_node *current_funcsig; + +static entitymap_t entitymap; static struct obstack asm_obst; @@ -71,26 +82,32 @@ typedef enum declaration_kind_t { DECLARATION_KIND_LOCAL_VARIABLE_ENTITY, DECLARATION_KIND_COMPOUND_MEMBER, DECLARATION_KIND_LABEL_BLOCK, - DECLARATION_KIND_ENUM_ENTRY + DECLARATION_KIND_ENUM_ENTRY, + DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE, + DECLARATION_KIND_COMPOUND_TYPE_COMPLETE, + DECLARATION_KIND_TYPE } declaration_kind_t; static ir_type *get_ir_type(type_t *type); +static ir_type *get_ir_type_incomplete(type_t *type); static int count_decls_in_stmts(const statement_t *stmt); ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos) { const declaration_t *declaration = get_irg_loc_description(irg, pos); - warningf(declaration->source_position, - "variable '%#T' might be used uninitialized", - declaration->type, declaration->symbol); + if (declaration != NULL) { + warningf(&declaration->source_position, + "variable '%#T' might be used uninitialized", + declaration->type, declaration->symbol); + } return new_r_Unknown(irg, mode); } unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg) { const source_position_t *pos = (const source_position_t*) dbg; - if(pos == NULL) + if (pos == NULL) return 0; return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name, pos->linenr); @@ -99,9 +116,9 @@ unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg) const char *dbg_retrieve(const dbg_info *dbg, unsigned *line) { const source_position_t *pos = (const source_position_t*) dbg; - if(pos == NULL) + if (pos == NULL) return NULL; - if(line != NULL) + if (line != NULL) *line = pos->linenr; return pos->input_name; } @@ -111,207 +128,81 @@ static dbg_info *get_dbg_info(const source_position_t *pos) return (dbg_info*) pos; } -static unsigned unique_id = 0; - -static ident *unique_ident(const char *tag) -{ - char buf[256]; +static ir_mode *_atomic_modes[ATOMIC_TYPE_LAST+1]; - snprintf(buf, sizeof(buf), "%s.%u", tag, unique_id); - unique_id++; - return new_id_from_str(buf); -} - -/** - * Return the signed integer mode of size bytes. - * - * @param size the size - */ -static ir_mode *get_smode(unsigned size) -{ - static ir_mode *s_modes[16 + 1] = {0, }; - ir_mode *res; - - if (size <= 0 || size > 16) - return NULL; - - res = s_modes[size]; - if (res == NULL) { - unsigned bits; - char name[32]; - - bits = size * 8; - snprintf(name, sizeof(name), "i%u", bits); - res = new_ir_mode(name, irms_int_number, bits, 1, irma_twos_complement, - bits <= machine_size ? machine_size : bits ); +static ir_mode *mode_int, *mode_uint; - s_modes[size] = res; +static ir_node *_expression_to_firm(const expression_t *expression); +static ir_node *expression_to_firm(const expression_t *expression); +static inline ir_mode *get_ir_mode(type_t *type); +static void create_local_declaration(declaration_t *declaration); + +static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind) +{ + unsigned flags = get_atomic_type_flags(kind); + unsigned size = get_atomic_type_size(kind); + if ( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT)) + && !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) { + char name[64]; + ir_mode_sort sort; + unsigned bit_size = size * 8; + bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0; + ir_mode_arithmetic arithmetic; + unsigned modulo_shift; + + if (flags & ATOMIC_TYPE_FLAG_INTEGER) { + assert(! (flags & ATOMIC_TYPE_FLAG_FLOAT)); + snprintf(name, sizeof(name), "i%s%d", is_signed?"":"u", bit_size); + sort = irms_int_number; + arithmetic = irma_twos_complement; + modulo_shift = bit_size < machine_size ? machine_size : bit_size; + } else { + assert(flags & ATOMIC_TYPE_FLAG_FLOAT); + snprintf(name, sizeof(name), "f%d", bit_size); + sort = irms_float_number; + arithmetic = irma_ieee754; + modulo_shift = 0; + } + return new_ir_mode(name, sort, bit_size, is_signed, arithmetic, + modulo_shift); } - return res; -} -/** - * Return the unsigned integer mode of size bytes. - * - * @param size the size - */ -static ir_mode *get_umode(unsigned size) -{ - static ir_mode *u_modes[16 + 1] = {0, }; - ir_mode *res; - - if (size <= 0 || size > 16) - return NULL; - - res = u_modes[size]; - if (res == NULL) { - unsigned bits; - char name[32]; - - bits = size * 8; - snprintf(name, sizeof(name), "u%u", bits); - res = new_ir_mode(name, irms_int_number, bits, 0, irma_twos_complement, - bits <= machine_size ? machine_size : bits ); - - u_modes[size] = res; - } - return res; + return NULL; } /** - * Return the pointer mode of size bytes. - * - * @param size the size + * Initialises the atomic modes depending on the machine size. */ -static ir_mode *get_ptrmode(unsigned size, char *name) +static void init_atomic_modes(void) { - static ir_mode *p_modes[16 + 1] = {0, }; - ir_mode *res; - - if (size <= 0 || size > 16) - return NULL; - - res = p_modes[size]; - if (res == NULL) { - unsigned bits; - char buf[32]; - - bits = size * 8; - if (name == NULL) { - snprintf(buf, sizeof(buf), "p%u", bits); - name = buf; - } - res = new_ir_mode(name, irms_reference, bits, 0, irma_twos_complement, - bits <= machine_size ? machine_size : bits); - - p_modes[size] = res; - - set_reference_mode_signed_eq(res, get_smode(size)); - set_reference_mode_unsigned_eq(res, get_umode(size)); + for(int i = 0; i <= ATOMIC_TYPE_LAST; ++i) { + _atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i); } - return res; -} - -static ir_mode *_atomic_modes[ATOMIC_TYPE_LAST]; - -static ir_mode *mode_int, *mode_uint; - -static ir_node *expression_to_firm(const expression_t *expression); -static inline ir_mode *get_ir_mode(type_t *type); - -/** - * Initialises the atomic modes depending on the machine size. - */ -static void init_atomic_modes(void) { - unsigned int_size = machine_size < 32 ? 2 : 4; - unsigned long_size = machine_size < 64 ? 4 : 8; - unsigned llong_size = machine_size < 32 ? 4 : 8; - - /* firm has no real void... */ - _atomic_modes[ATOMIC_TYPE_VOID] = mode_T; - _atomic_modes[ATOMIC_TYPE_CHAR] = char_is_signed ? get_smode(1) : get_umode(1); - _atomic_modes[ATOMIC_TYPE_SCHAR] = get_smode(1); - _atomic_modes[ATOMIC_TYPE_UCHAR] = get_umode(1); - _atomic_modes[ATOMIC_TYPE_SHORT] = get_smode(2); - _atomic_modes[ATOMIC_TYPE_USHORT] = get_umode(2); - _atomic_modes[ATOMIC_TYPE_INT] = get_smode(int_size); - _atomic_modes[ATOMIC_TYPE_UINT] = get_umode(int_size); - _atomic_modes[ATOMIC_TYPE_LONG] = get_smode(long_size); - _atomic_modes[ATOMIC_TYPE_ULONG] = get_umode(long_size); - _atomic_modes[ATOMIC_TYPE_LONGLONG] = get_smode(llong_size); - _atomic_modes[ATOMIC_TYPE_ULONGLONG] = get_umode(llong_size); - _atomic_modes[ATOMIC_TYPE_FLOAT] = mode_F; - _atomic_modes[ATOMIC_TYPE_DOUBLE] = mode_D; - _atomic_modes[ATOMIC_TYPE_LONG_DOUBLE] = mode_E; - _atomic_modes[ATOMIC_TYPE_BOOL] = get_umode(int_size); - -#ifdef PROVIDE_COMPLEX - _atomic_modes[ATOMIC_TYPE_BOOL] = _atomic_modes[ATOMIC_TYPE_INT]; - _atomic_modes[ATOMIC_TYPE_FLOAT_IMAGINARY] = _atomic_modes[ATOMIC_TYPE_FLOAT]; - _atomic_modes[ATOMIC_TYPE_DOUBLE_IMAGINARY] = _atomic_modes[ATOMIC_TYPE_DOUBLE]; - _atomic_modes[ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY] = _atomic_modes[ATOMIC_TYPE_LONG_DOUBLE]; -#endif - - /* Hmm, pointers should be machine size */ - set_modeP_data(get_ptrmode(machine_size >> 3, NULL)); - set_modeP_code(get_ptrmode(machine_size >> 3, NULL)); - mode_int = _atomic_modes[ATOMIC_TYPE_INT]; mode_uint = _atomic_modes[ATOMIC_TYPE_UINT]; -} - -static ir_mode *get_atomic_mode(const atomic_type_t* atomic_type) -{ - ir_mode *res = NULL; - if ((unsigned)atomic_type->akind < (unsigned)ATOMIC_TYPE_LAST) - res = _atomic_modes[(unsigned)atomic_type->akind]; - if (res == NULL) - panic("Encountered unknown atomic type"); - return res; -} - -static unsigned get_atomic_type_size(const atomic_type_t *type) -{ - switch(type->akind) { - case ATOMIC_TYPE_CHAR: - case ATOMIC_TYPE_SCHAR: - case ATOMIC_TYPE_UCHAR: - return 1; - case ATOMIC_TYPE_SHORT: - case ATOMIC_TYPE_USHORT: - return 2; + /* there's no real void type in firm */ + _atomic_modes[ATOMIC_TYPE_VOID] = mode_int; - case ATOMIC_TYPE_BOOL: - case ATOMIC_TYPE_INT: - case ATOMIC_TYPE_UINT: - return machine_size >> 3; + /* initialize pointer modes */ + char name[64]; + ir_mode_sort sort = irms_reference; + unsigned bit_size = machine_size; + bool is_signed = 0; + ir_mode_arithmetic arithmetic = irma_twos_complement; + unsigned modulo_shift + = bit_size < machine_size ? machine_size : bit_size; - case ATOMIC_TYPE_LONG: - case ATOMIC_TYPE_ULONG: - return machine_size > 16 ? machine_size >> 3 : 4; + snprintf(name, sizeof(name), "p%d", machine_size); + ir_mode *ptr_mode = new_ir_mode(name, sort, bit_size, is_signed, arithmetic, + modulo_shift); - case ATOMIC_TYPE_LONGLONG: - case ATOMIC_TYPE_ULONGLONG: - return machine_size > 16 ? 8 : 4; + set_reference_mode_signed_eq(ptr_mode, _atomic_modes[get_intptr_kind()]); + set_reference_mode_unsigned_eq(ptr_mode, _atomic_modes[get_uintptr_kind()]); - case ATOMIC_TYPE_FLOAT: - return 4; - - case ATOMIC_TYPE_DOUBLE: - return 8; - - case ATOMIC_TYPE_LONG_DOUBLE: - return 12; - - case ATOMIC_TYPE_VOID: - return 1; - - case ATOMIC_TYPE_INVALID: - case ATOMIC_TYPE_LAST: - break; - } - panic("Trying to determine size of invalid atomic type"); + /* Hmm, pointers should be machine size */ + set_modeP_data(ptr_mode); + set_modeP_code(ptr_mode); } static unsigned get_compound_type_size(compound_type_t *type) @@ -330,13 +221,15 @@ static unsigned get_array_type_size(array_type_t *type) static unsigned get_type_size_const(type_t *type) { - type = skip_typeref(type); - switch(type->kind) { case TYPE_ERROR: - panic("error type occured"); + panic("error type occurred"); case TYPE_ATOMIC: - return get_atomic_type_size(&type->atomic); + return get_atomic_type_size(type->atomic.akind); + case TYPE_COMPLEX: + return 2 * get_atomic_type_size(type->complex.akind); + case TYPE_IMAGINARY: + return get_atomic_type_size(type->imaginary.akind); case TYPE_ENUM: return get_mode_size_bytes(mode_int); case TYPE_COMPOUND_UNION: @@ -365,9 +258,9 @@ static ir_node *get_type_size(type_t *type) { type = skip_typeref(type); - if(is_type_array(type) && type->array.is_vla) { + if (is_type_array(type) && type->array.is_vla) { ir_node *size_node = type->array.size_node; - if(size_node == NULL) { + if (size_node == NULL) { size_node = expression_to_firm(type->array.size_expression); assert(!is_Const(size_node)); type->array.size_node = size_node; @@ -397,71 +290,136 @@ static unsigned count_parameters(const function_type_t *function_type) return count; } - +/** + * Creates a Firm type for an atomic type + */ static ir_type *create_atomic_type(const atomic_type_t *type) { - dbg_info *dbgi = get_dbg_info(&type->type.source_position); - ir_mode *mode = get_atomic_mode(type); - ident *id = get_mode_ident(mode); - ir_type *irtype = new_d_type_primitive(id, mode, dbgi); + dbg_info *dbgi = get_dbg_info(&type->base.source_position); + atomic_type_kind_t kind = type->akind; + ir_mode *mode = _atomic_modes[kind]; + ident *id = get_mode_ident(mode); + ir_type *irtype = new_d_type_primitive(id, mode, dbgi); - /* TODO: this is x86 specific, we should fiddle this into - * lang_features.h somehow... */ - if(type->akind == ATOMIC_TYPE_LONG_DOUBLE - || type->akind == ATOMIC_TYPE_DOUBLE - || type->akind == ATOMIC_TYPE_LONGLONG - || type->akind == ATOMIC_TYPE_ULONGLONG) { - set_type_alignment_bytes(irtype, 4); - } + set_type_alignment_bytes(irtype, type->base.alignment); + + return irtype; +} + +/** + * Creates a Firm type for a complex type + */ +static ir_type *create_complex_type(const complex_type_t *type) +{ + dbg_info *dbgi = get_dbg_info(&type->base.source_position); + atomic_type_kind_t kind = type->akind; + ir_mode *mode = _atomic_modes[kind]; + ident *id = get_mode_ident(mode); + + (void) id; + (void) dbgi; + + /* FIXME: finish the array */ + return NULL; +} + +/** + * Creates a Firm type for an imaginary type + */ +static ir_type *create_imaginary_type(const imaginary_type_t *type) +{ + dbg_info *dbgi = get_dbg_info(&type->base.source_position); + atomic_type_kind_t kind = type->akind; + ir_mode *mode = _atomic_modes[kind]; + ident *id = get_mode_ident(mode); + ir_type *irtype = new_d_type_primitive(id, mode, dbgi); + + set_type_alignment_bytes(irtype, type->base.alignment); return irtype; } +/** + * return type of a parameter (and take transparent union gnu extension into + * account) + */ +static type_t *get_parameter_type(type_t *type) +{ + type = skip_typeref(type); + if (type->base.modifiers & TYPE_MODIFIER_TRANSPARENT_UNION) { + declaration_t *decl = type->compound.declaration; + type = decl->scope.declarations->type; + } + + return type; +} + static ir_type *create_method_type(const function_type_t *function_type) { type_t *return_type = function_type->return_type; - ident *id = unique_ident("functiontype"); + ident *id = id_unique("functiontype.%u"); int n_parameters = count_parameters(function_type); int n_results = return_type == type_void ? 0 : 1; - dbg_info *dbgi = get_dbg_info(&function_type->type.source_position); + dbg_info *dbgi = get_dbg_info(&function_type->base.source_position); ir_type *irtype = new_d_type_method(id, n_parameters, n_results, dbgi); - if(return_type != type_void) { + if (return_type != type_void) { ir_type *restype = get_ir_type(return_type); set_method_res_type(irtype, 0, restype); } function_parameter_t *parameter = function_type->parameters; int n = 0; - for( ; parameter != NULL; parameter = parameter->next) { - ir_type *p_irtype = get_ir_type(parameter->type); + for ( ; parameter != NULL; parameter = parameter->next) { + type_t *type = get_parameter_type(parameter->type); + ir_type *p_irtype = get_ir_type(type); set_method_param_type(irtype, n, p_irtype); ++n; } - if(function_type->variadic || function_type->unspecified_parameters) { + if (function_type->variadic || function_type->unspecified_parameters) { set_method_variadicity(irtype, variadicity_variadic); } + unsigned cc = get_method_calling_convention(irtype); + switch (function_type->calling_convention) { + case CC_DEFAULT: /* unspecified calling convention, equal to one of the other, typically cdecl */ + case CC_CDECL: +is_cdecl: + set_method_calling_convention(irtype, SET_CDECL(cc)); + break; + + case CC_STDCALL: + if (function_type->variadic || function_type->unspecified_parameters) + goto is_cdecl; + + /* only non-variadic function can use stdcall, else use cdecl */ + set_method_calling_convention(irtype, SET_STDCALL(cc)); + break; + + case CC_FASTCALL: + if (function_type->variadic || function_type->unspecified_parameters) + goto is_cdecl; + /* only non-variadic function can use fastcall, else use cdecl */ + set_method_calling_convention(irtype, SET_FASTCALL(cc)); + break; + + case CC_THISCALL: + /* Hmm, leave default, not accepted by the parser yet. */ + warningf(&function_type->base.source_position, "THISCALL calling convention not supported yet"); + break; + } return irtype; } static ir_type *create_pointer_type(pointer_type_t *type) { - type_t *points_to = type->points_to; - ir_type *ir_points_to; - /* Avoid endless recursion if the points_to type contains this poiner type - * again (might be a struct). We therefore first create a void* pointer - * and then set the real points_to type - */ - dbg_info *dbgi = get_dbg_info(&type->type.source_position); - ir_type *ir_type = new_d_type_pointer(unique_ident("pointer"), - ir_type_void, mode_P_data, dbgi); - type->type.firm_type = ir_type; - - ir_points_to = get_ir_type(points_to); - set_pointer_points_to_type(ir_type, ir_points_to); + type_t *points_to = type->points_to; + ir_type *ir_points_to = get_ir_type_incomplete(points_to); + dbg_info *dbgi = get_dbg_info(&type->base.source_position); + ir_type *ir_type = new_d_type_pointer(id_unique("pointer.%u"), + ir_points_to, mode_P_data, dbgi); return ir_type; } @@ -471,20 +429,20 @@ 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 = unique_ident("array"); - dbg_info *dbgi = get_dbg_info(&type->type.source_position); + ident *id = id_unique("array.%u"); + dbg_info *dbgi = get_dbg_info(&type->base.source_position); ir_type *ir_type = new_d_type_array(id, 1, ir_element_type, dbgi); const int align = get_type_alignment_bytes(ir_element_type); set_type_alignment_bytes(ir_type, align); - if(type->size_constant) { + if (type->size_constant) { int n_elements = type->size; set_array_bounds_int(ir_type, 0, 0, n_elements); size_t elemsize = get_type_size_bytes(ir_element_type); - if(elemsize % align > 0) { + if (elemsize % align > 0) { elemsize += align - (elemsize % align); } set_type_size_bytes(ir_type, n_elements * elemsize); @@ -569,14 +527,14 @@ static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp, static ir_type *create_bitfield_type(bitfield_type_t *const type) { - type_t *base = skip_typeref(type->base); - assert(base->kind == TYPE_ATOMIC); + type_t *base = skip_typeref(type->base_type); + assert(base->kind == TYPE_ATOMIC || base->kind == TYPE_ENUM); ir_type *irbase = get_ir_type(base); unsigned size = fold_constant(type->size); assert(!is_type_float(base)); - if(is_type_signed(base)) { + if (is_type_signed(base)) { return get_signed_int_type_for_bit_size(irbase, size); } else { return get_unsigned_int_type_for_bit_size(irbase, size); @@ -585,68 +543,101 @@ static ir_type *create_bitfield_type(bitfield_type_t *const type) #define INVALID_TYPE ((ir_type_ptr)-1) -static ir_type *create_union_type(compound_type_t *type, ir_type *irtype, - size_t *outer_offset, size_t *outer_align); +enum { + COMPOUND_IS_STRUCT = false, + COMPOUND_IS_UNION = true +}; -static ir_type *create_struct_type(compound_type_t *type, ir_type *irtype, - size_t *outer_offset, size_t *outer_align) +/** + * Construct firm type from ast struct type. + * + * As anonymous inner structs get flattened to a single firm type, we might get + * irtype, outer_offset and out_align passed (they represent the position of + * the anonymous inner struct inside the resulting firm struct) + */ +static ir_type *create_compound_type(compound_type_t *type, ir_type *irtype, + size_t *outer_offset, size_t *outer_align, + bool incomplete, bool is_union) { - declaration_t *declaration = type->declaration; - if(declaration->v.irtype != NULL) { + declaration_t *declaration = type->declaration; + declaration_kind_t kind = (declaration_kind_t)declaration->declaration_kind; + + if (kind == DECLARATION_KIND_COMPOUND_TYPE_COMPLETE + || (kind == DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE + && incomplete)) return declaration->v.irtype; - } size_t align_all = 1; size_t offset = 0; size_t bit_offset = 0; - if(irtype == NULL) { + size_t size = 0; + + if (irtype == NULL) { symbol_t *symbol = declaration->symbol; ident *id; - if(symbol != NULL) { - id = unique_ident(symbol->string); + if (symbol != NULL) { + id = new_id_from_str(symbol->string); } else { - id = unique_ident("__anonymous_struct"); + if (is_union) { + id = id_unique("__anonymous_union.%u"); + } else { + id = id_unique("__anonymous_struct.%u"); + } } - dbg_info *dbgi = get_dbg_info(&type->type.source_position); + dbg_info *dbgi = get_dbg_info(&type->base.source_position); - irtype = new_d_type_struct(id, dbgi); + if (is_union) { + irtype = new_d_type_union(id, dbgi); + } else { + irtype = new_d_type_struct(id, dbgi); + } - declaration->v.irtype = irtype; - type->type.firm_type = irtype; + declaration->declaration_kind + = DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE; + declaration->v.irtype = irtype; + //type->base.firm_type = irtype; } else { offset = *outer_offset; align_all = *outer_align; } + if (incomplete) + return irtype; + + declaration->declaration_kind = DECLARATION_KIND_COMPOUND_TYPE_COMPLETE; + declaration_t *entry = declaration->scope.declarations; for( ; entry != NULL; entry = entry->next) { - if(entry->namespc != NAMESPACE_NORMAL) + if (entry->namespc != NAMESPACE_NORMAL) continue; + size_t prev_offset = offset; + symbol_t *symbol = entry->symbol; type_t *entry_type = skip_typeref(entry->type); dbg_info *dbgi = get_dbg_info(&entry->source_position); + ident *ident; - if(symbol != NULL) { + if (symbol != NULL) { ident = new_id_from_str(symbol->string); } else { - if(entry_type->kind == TYPE_COMPOUND_STRUCT) { - create_struct_type(&entry_type->compound, irtype, &offset, - &align_all); - continue; - } else if(entry_type->kind == TYPE_COMPOUND_UNION) { - create_union_type(&entry_type->compound, irtype, &offset, - &align_all); - continue; + if (entry_type->kind == TYPE_COMPOUND_STRUCT) { + create_compound_type(&entry_type->compound, irtype, &offset, + &align_all, false, COMPOUND_IS_STRUCT); + goto finished_member; + } else if (entry_type->kind == TYPE_COMPOUND_UNION) { + create_compound_type(&entry_type->compound, irtype, &offset, + &align_all, false, COMPOUND_IS_UNION); + goto finished_member; } else { assert(entry_type->kind == TYPE_BITFIELD); } - ident = unique_ident("anon"); + ident = id_unique("anon.%u"); } ir_type *base_irtype; - if(entry_type->kind == TYPE_BITFIELD) { - base_irtype = get_ir_type(entry_type->bitfield.base); + if (entry_type->kind == TYPE_BITFIELD) { + base_irtype = get_ir_type(entry_type->bitfield.base_type); } else { base_irtype = get_ir_type(entry_type); } @@ -659,11 +650,11 @@ static ir_type *create_struct_type(compound_type_t *type, ir_type *irtype, size_t base; size_t bits_remainder; - if(entry_type->kind == TYPE_BITFIELD) { + if (entry_type->kind == TYPE_BITFIELD) { size_t size_bits = fold_constant(entry_type->bitfield.size); size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset; - if(size_bits > rest_size_bits) { + if (size_bits > rest_size_bits) { /* start a new bucket */ offset += entry_alignment - misalign; bit_offset = 0; @@ -680,7 +671,7 @@ static ir_type *create_struct_type(compound_type_t *type, ir_type *irtype, bit_offset = bit_offset + (size_bits % 8); } else { size_t entry_size = get_type_size_bytes(base_irtype); - if(misalign > 0 || bit_offset > 0) + if (misalign > 0 || bit_offset > 0) offset += entry_alignment - misalign; base = offset; @@ -689,8 +680,8 @@ static ir_type *create_struct_type(compound_type_t *type, ir_type *irtype, bit_offset = 0; } - if(entry_alignment > align_all) { - if(entry_alignment % align_all != 0) { + if (entry_alignment > align_all) { + if (entry_alignment % align_all != 0) { panic("uneven alignments not supported yet"); } align_all = entry_alignment; @@ -703,123 +694,36 @@ static ir_type *create_struct_type(compound_type_t *type, ir_type *irtype, entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER; assert(entry->v.entity == NULL); entry->v.entity = entity; - } - size_t misalign = offset % align_all; - if(misalign > 0 || bit_offset > 0) { - offset += align_all - misalign; +finished_member: + if (is_union) { + size_t entry_size = offset - prev_offset; + if (entry_size > size) { + size = entry_size; + } + offset = 0; + bit_offset = 0; + } } - if(outer_offset != NULL) { - *outer_offset = offset; - *outer_align = align_all; - } else { - set_type_alignment_bytes(irtype, align_all); - set_type_size_bytes(irtype, offset); - set_type_state(irtype, layout_fixed); + if (!is_union) { + size = offset; } - return irtype; -} - -static ir_type *create_union_type(compound_type_t *type, ir_type *irtype, - size_t *outer_offset, size_t *outer_align) -{ - declaration_t *declaration = type->declaration; - if(declaration->v.irtype != NULL) { - return declaration->v.irtype; - } - - size_t align_all = 1; - size_t offset = 0; - size_t size = 0; - - if(irtype == NULL) { - symbol_t *symbol = declaration->symbol; - ident *id; - if(symbol != NULL) { - id = unique_ident(symbol->string); - } else { - id = unique_ident("__anonymous_union"); - } - dbg_info *dbgi = get_dbg_info(&type->type.source_position); - - irtype = new_d_type_union(id, dbgi); - - declaration->v.irtype = irtype; - type->type.firm_type = irtype; - } else { - offset = *outer_offset; - align_all = *outer_align; + size_t misalign = offset % align_all; + if (misalign > 0 || bit_offset > 0) { + size += align_all - misalign; } - type->type.firm_type = irtype; - - declaration_t *entry = declaration->scope.declarations; - for( ; entry != NULL; entry = entry->next) { - if(entry->namespc != NAMESPACE_NORMAL) - continue; - - symbol_t *symbol = entry->symbol; - type_t *entry_type = skip_typeref(entry->type); - ir_type *entry_ir_type = get_ir_type(entry_type); - - ident *ident; - if(symbol != NULL) { - ident = new_id_from_str(entry->symbol->string); + if (outer_offset != NULL) { + if (!is_union) { + *outer_offset = offset; } else { - size_t offs = offset; - if(entry_type->kind == TYPE_COMPOUND_STRUCT) { - create_struct_type(&entry_type->compound, irtype, &offs, - &align_all); - continue; - } else if(entry_type->kind == TYPE_COMPOUND_UNION) { - create_union_type(&entry_type->compound, irtype, &offs, - &align_all); - continue; - } else { - panic("anonymous union member must be struct or union"); - } - size_t entry_size = offs - offset; - if(entry_size > size) { - size = entry_size; - } - ident = unique_ident("anon"); + *outer_offset += size; } - size_t entry_size = get_type_size_bytes(entry_ir_type); - size_t entry_alignment = get_type_alignment_bytes(entry_ir_type); - - dbg_info *const dbgi = get_dbg_info(&entry->source_position); - ir_entity *const entity = new_d_entity(irtype, ident, entry_ir_type, - dbgi); - //add_union_member(irtype, entity); - set_entity_offset(entity, 0); - entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER; - assert(entry->v.entity == NULL); - entry->v.entity = entity; - - if(entry_size > size) { - size = entry_size; - } - if(entry_alignment > align_all) { - if(entry_alignment % align_all != 0) { - panic("Uneven alignments not supported yet"); - } - align_all = entry_alignment; - } - } - - if(outer_offset != NULL) { - assert(*outer_offset == offset); - - size_t misalign = offset % align_all; - if (misalign != 0) - size += align_all - misalign; - *outer_offset += size; - - if(align_all > *outer_align) { - if(align_all % *outer_align != 0) { + if (align_all > *outer_align) { + if (align_all % *outer_align != 0) { panic("uneven alignments not supported yet"); } *outer_align = align_all; @@ -828,7 +732,6 @@ static ir_type *create_union_type(compound_type_t *type, ir_type *irtype, set_type_alignment_bytes(irtype, align_all); set_type_size_bytes(irtype, size); set_type_state(irtype, layout_fixed); - declaration->v.irtype = irtype; } return irtype; @@ -836,12 +739,15 @@ static ir_type *create_union_type(compound_type_t *type, ir_type *irtype, static ir_type *create_enum_type(enum_type_t *const type) { - type->type.firm_type = ir_type_int; + 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); + bool constant_folding_old = constant_folding; + constant_folding = true; + declaration_t *declaration = type->declaration->next; for (; declaration != NULL; declaration = declaration->next) { if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY) @@ -861,27 +767,57 @@ static ir_type *create_enum_type(enum_type_t *const type) tv_next = tarval_add(tv_next, one); } + constant_folding = constant_folding_old; + return ir_type_int; } +static ir_type *get_ir_type_incomplete(type_t *type) +{ + assert(type != NULL); + type = skip_typeref(type); + + if (type->base.firm_type != NULL) { + assert(type->base.firm_type != INVALID_TYPE); + return type->base.firm_type; + } + + switch (type->kind) { + case TYPE_COMPOUND_STRUCT: + return create_compound_type(&type->compound, NULL, NULL, NULL, + true, COMPOUND_IS_STRUCT); + case TYPE_COMPOUND_UNION: + return create_compound_type(&type->compound, NULL, NULL, NULL, + true, COMPOUND_IS_UNION); + default: + return get_ir_type(type); + } +} + static ir_type *get_ir_type(type_t *type) { assert(type != NULL); type = skip_typeref(type); - if(type->base.firm_type != NULL) { + if (type->base.firm_type != NULL) { assert(type->base.firm_type != INVALID_TYPE); return type->base.firm_type; } ir_type *firm_type = NULL; - switch(type->kind) { + switch (type->kind) { case TYPE_ERROR: - panic("error type occured"); + panic("error type occurred"); case TYPE_ATOMIC: firm_type = create_atomic_type(&type->atomic); break; + case TYPE_COMPLEX: + firm_type = create_complex_type(&type->complex); + break; + case TYPE_IMAGINARY: + firm_type = create_imaginary_type(&type->imaginary); + break; case TYPE_FUNCTION: firm_type = create_method_type(&type->function); break; @@ -892,10 +828,12 @@ static ir_type *get_ir_type(type_t *type) firm_type = create_array_type(&type->array); break; case TYPE_COMPOUND_STRUCT: - firm_type = create_struct_type(&type->compound, NULL, NULL, NULL); + firm_type = create_compound_type(&type->compound, NULL, NULL, NULL, + false, COMPOUND_IS_STRUCT); break; case TYPE_COMPOUND_UNION: - firm_type = create_union_type(&type->compound, NULL, NULL, NULL); + firm_type = create_compound_type(&type->compound, NULL, NULL, NULL, + false, COMPOUND_IS_UNION); break; case TYPE_ENUM: firm_type = create_enum_type(&type->enumt); @@ -912,7 +850,7 @@ static ir_type *get_ir_type(type_t *type) case TYPE_INVALID: break; } - if(firm_type == NULL) + if (firm_type == NULL) panic("unknown type found"); type->base.firm_type = firm_type; @@ -924,7 +862,7 @@ static inline ir_mode *get_ir_mode(type_t *type) ir_type *irtype = get_ir_type(type); /* firm doesn't report a mode for arrays somehow... */ - if(is_Array_type(irtype)) { + if (is_Array_type(irtype)) { return mode_P_data; } @@ -933,8 +871,6 @@ static inline ir_mode *get_ir_mode(type_t *type) return mode; } -static ident *predef_idents[rts_max]; - /** Names of the runtime functions. */ static const struct { int id; /**< the rts id */ @@ -945,6 +881,7 @@ static const struct { } rts_data[] = { { rts_debugbreak, 0, "__debugbreak", 0, _MS }, { rts_abort, 0, "abort", 0, _C89 }, + { rts_alloca, 1, "alloca", 1, _ALL }, { rts_abs, 1, "abs", 1, _C89 }, { rts_labs, 1, "labs", 1, _C89 }, { rts_llabs, 1, "llabs", 1, _C99 }, @@ -1016,9 +953,91 @@ static const struct { { rts_strncmp, 1, "strncmp", 3, _C89 } }; -static ir_entity* get_function_entity(declaration_t *declaration) +static ident *rts_idents[sizeof(rts_data) / sizeof(rts_data[0])]; + +/** + * Mangles an entity linker (ld) name for win32 usage. + * + * @param ent the entity to be mangled + * @param declaration the declaration + */ +static ident *create_ld_ident_win32(ir_entity *ent, declaration_t *declaration) +{ + ident *id; + + if (is_Method_type(get_entity_type(ent))) + id = decorate_win32_c_fkt(ent, get_entity_ident(ent)); + else { + /* always add an underscore in win32 */ + id = mangle(id_underscore, get_entity_ident(ent)); + } + + decl_modifiers_t decl_modifiers = declaration->modifiers; + if (decl_modifiers & DM_DLLIMPORT) { + /* add prefix for imported symbols */ + id = mangle(id_imp, id); + } + return id; +} + +/** + * Mangles an entity linker (ld) name for Linux ELF usage. + * + * @param ent the entity to be mangled + * @param declaration the declaration + */ +static ident *create_ld_ident_linux_elf(ir_entity *entity, + declaration_t *declaration) +{ + (void) declaration; + return get_entity_ident(entity); +} + +/** + * Mangles an entity linker (ld) name for Mach-O usage. + * + * @param ent the entity to be mangled + * @param declaration the declaration + */ +static ident *create_ld_ident_macho(ir_entity *ent, declaration_t *declaration) +{ + (void) declaration; + ident *id = mangle(id_underscore, get_entity_ident(ent)); + return id; +} + +typedef ident* (*create_ld_ident_func)(ir_entity *entity, + declaration_t *declaration); +create_ld_ident_func create_ld_ident = create_ld_ident_linux_elf; + +/** + * Handle GNU attributes for entities + * + * @param ent the entity + * @param decl the routine declaration + */ +static void handle_gnu_attributes_ent(ir_entity *ent, declaration_t *decl) +{ + if (decl->modifiers & DM_PURE) { + /* TRUE if the declaration includes the GNU + __attribute__((pure)) specifier. */ + set_entity_additional_property(ent, mtp_property_pure); + } + if (decl->modifiers & DM_USED) { + /* TRUE if the declaration includes the GNU + __attribute__((used)) specifier. */ + set_entity_stickyness(ent, stickyness_sticky); + } +} + +/** + * Creates an entity representing a function. + * + * @param declaration the function declaration + */ +static ir_entity *get_function_entity(declaration_t *declaration) { - if(declaration->declaration_kind == DECLARATION_KIND_FUNCTION) + if (declaration->declaration_kind == DECLARATION_KIND_FUNCTION) return declaration->v.entity; assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN); @@ -1029,49 +1048,73 @@ static ir_entity* get_function_entity(declaration_t *declaration) ir_type *ir_type_method = get_ir_type(declaration->type); assert(is_Method_type(ir_type_method)); - dbg_info *const dbgi = get_dbg_info(&declaration->source_position); - ir_entity *const entity = new_d_entity(global_type, id, ir_type_method, dbgi); - set_entity_ld_ident(entity, id); - if(declaration->storage_class == STORAGE_CLASS_STATIC - || declaration->is_inline) { + /* already an entity defined? */ + ir_entity *entity = entitymap_get(&entitymap, symbol); + if (entity != NULL) { + if (get_entity_visibility(entity) == visibility_external_allocated + && declaration->init.statement != NULL) { + set_entity_visibility(entity, visibility_external_visible); + } + goto entity_created; + } + + dbg_info *const dbgi = get_dbg_info(&declaration->source_position); + entity = new_d_entity(global_type, id, ir_type_method, dbgi); + set_entity_ld_ident(entity, create_ld_ident(entity, declaration)); + + handle_gnu_attributes_ent(entity, declaration); + + /* static inline => local + * extern inline => local + * inline without definition => local + * inline with definition => external_visible */ + storage_class_tag_t const storage_class = declaration->storage_class; + bool const is_inline = declaration->is_inline; + bool const has_body = declaration->init.statement != NULL; + if (is_inline && storage_class == STORAGE_CLASS_NONE && has_body) { + set_entity_visibility(entity, visibility_external_visible); + } else if (storage_class == STORAGE_CLASS_STATIC || + (is_inline && has_body)) { + if (!has_body) { + /* this entity was declared, but is defined nowhere */ + set_entity_peculiarity(entity, peculiarity_description); + } set_entity_visibility(entity, visibility_local); - } else if(declaration->init.statement != NULL) { + } else if (has_body) { set_entity_visibility(entity, visibility_external_visible); } else { set_entity_visibility(entity, visibility_external_allocated); + } + set_entity_allocation(entity, allocation_static); - /* We should check for file scope here, but as long as we compile C only - this is not needed. */ - int n_params = get_method_n_params(ir_type_method); - int n_res = get_method_n_ress(ir_type_method); - int i; + /* We should check for file scope here, but as long as we compile C only + this is not needed. */ + if (! firm_opt.freestanding) { + /* check for a known runtime function */ + for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) { + if (id != rts_idents[i]) + continue; - if (n_params == 0 && n_res == 0 && id == predef_idents[rts_abort]) { - /* found abort(), store for later */ - //abort_ent = ent; - //abort_tp = ftype; - } else { - if (! firm_opt.freestanding) { - /* check for a known runtime function */ - for (i = 0; i < rts_max; ++i) { - /* ignore those rts functions not necessary needed for current mode */ - if ((c_mode & rts_data[i].flags) == 0) - continue; - if (n_params == rts_data[i].n_params && n_res == rts_data[i].n_res && - id == predef_idents[rts_data[i].id]) - rts_entities[rts_data[i].id] = entity; - } - } + /* ignore those rts functions not necessary needed for current mode */ + if ((c_mode & rts_data[i].flags) == 0) + continue; + assert(rts_entities[rts_data[i].id] == NULL); + rts_entities[rts_data[i].id] = entity; } } - set_entity_allocation(entity, allocation_static); + entitymap_insert(&entitymap, symbol, entity); + +entity_created: declaration->declaration_kind = DECLARATION_KIND_FUNCTION; declaration->v.entity = entity; return entity; } +/** + * Creates a Const node representing a constant. + */ static ir_node *const_to_firm(const const_expression_t *cnst) { dbg_info *dbgi = get_dbg_info(&cnst->base.source_position); @@ -1080,10 +1123,10 @@ static ir_node *const_to_firm(const const_expression_t *cnst) char buf[128]; tarval *tv; size_t len; - if(mode_is_float(mode)) { + if (mode_is_float(mode)) { tv = new_tarval_from_double(cnst->v.float_value, mode); } else { - if(mode_is_signed(mode)) { + if (mode_is_signed(mode)) { len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value); } else { len = snprintf(buf, sizeof(buf), "%llu", @@ -1095,6 +1138,9 @@ static ir_node *const_to_firm(const const_expression_t *cnst) return new_d_Const(dbgi, mode, tv); } +/** + * Creates a Const node representing a character constant. + */ static ir_node *character_constant_to_firm(const const_expression_t *cnst) { dbg_info *dbgi = get_dbg_info(&cnst->base.source_position); @@ -1102,7 +1148,11 @@ static ir_node *character_constant_to_firm(const const_expression_t *cnst) long long int v = 0; for (size_t i = 0; i < cnst->v.character.size; ++i) { - v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]); + if (char_is_signed) { + v = (v << 8) | ((signed char)cnst->v.character.begin[i]); + } else { + v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]); + } } char buf[128]; size_t len = snprintf(buf, sizeof(buf), "%lld", v); @@ -1111,6 +1161,9 @@ static ir_node *character_constant_to_firm(const const_expression_t *cnst) return new_d_Const(dbgi, mode, tv); } +/** + * Creates a Const node representing a wide character constant. + */ static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst) { dbg_info *dbgi = get_dbg_info(&cnst->base.source_position); @@ -1125,8 +1178,15 @@ static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst) return new_d_Const(dbgi, mode, tv); } +/** + * 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) + ir_entity *entity) { assert(entity != NULL); union symconst_symbol sym; @@ -1134,16 +1194,23 @@ static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode, return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent); } +/** + * 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(unique_ident("strtype"), 1, + ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1, ir_type_const_char, dbgi); - ident *const id = unique_ident(id_prefix); + 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); @@ -1171,23 +1238,33 @@ static ir_node *string_to_firm(const source_position_t *const src_pos, 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", + 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(unique_ident("strtype"), 1, + ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1, elem_type, dbgi); - ident *const id = unique_ident("Lstr"); + 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); @@ -1214,12 +1291,13 @@ static ir_node *wide_string_literal_to_firm( return create_symconst(dbgi, mode_P_data, entity); } -static ir_node *deref_address(ir_type *const irtype, ir_node *const addr, - dbg_info *const dbgi) +static ir_node *deref_address(dbg_info *const dbgi, type_t *const type, + ir_node *const addr) { - if (is_compound_type(irtype) || - is_Method_type(irtype) || - is_Array_type(irtype)) { + ir_type *irtype = get_ir_type(type); + if (is_compound_type(irtype) + || is_Method_type(irtype) + || is_Array_type(irtype)) { return addr; } @@ -1228,21 +1306,29 @@ static ir_node *deref_address(ir_type *const irtype, ir_node *const addr, ir_node *const load = new_d_Load(dbgi, memory, addr, mode); ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M); ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res); + + if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) { + set_Load_volatility(load, volatility_is_volatile); + } + set_store(load_mem); return load_res; } +/** + * Creates a strict Conv if neccessary. + */ static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node) { ir_mode *mode = get_irn_mode(node); - if(!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding)) + if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding)) return node; - if(!mode_is_float(mode)) + if (!mode_is_float(mode)) return node; /* check if there is already a Conv */ - if (get_irn_op(node) == op_Conv) { + if (is_Conv(node)) { /* convert it into a strict Conv */ set_Conv_strict(node, 1); return node; @@ -1272,8 +1358,10 @@ static ir_node *get_global_var_address(dbg_info *const dbgi, } } -/* Returns the correct base address depending on whether it is a parameter or a - * normal local variable */ +/** + * Returns the correct base address depending on whether it is a parameter or a + * normal local variable. + */ static ir_node *get_local_frame(ir_entity *const ent) { ir_graph *const irg = current_ir_graph; @@ -1286,19 +1374,36 @@ static ir_node *get_local_frame(ir_entity *const 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)) + return value; + + if (dest_mode == mode_b) { + ir_node *zero = new_Const(value_mode, get_mode_null(value_mode)); + ir_node *cmp = new_d_Cmp(dbgi, value, zero); + ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg); + return proj; + } + + return new_d_Conv(dbgi, value, dest_mode); +} + static ir_node *reference_expression_to_firm(const reference_expression_t *ref) { dbg_info *dbgi = get_dbg_info(&ref->base.source_position); declaration_t *declaration = ref->declaration; type_t *type = skip_typeref(declaration->type); + /* make sure the type is constructed */ + (void) get_ir_type(type); + switch((declaration_kind_t) declaration->declaration_kind) { + case DECLARATION_KIND_TYPE: case DECLARATION_KIND_UNKNOWN: - if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY) { - break; - } - get_ir_type(type); - /* FALLTHROUGH */ + break; case DECLARATION_KIND_ENUM_ENTRY: { ir_mode *const mode = get_ir_mode(type); @@ -1315,21 +1420,21 @@ static ir_node *reference_expression_to_firm(const reference_expression_t *ref) } case DECLARATION_KIND_GLOBAL_VARIABLE: { ir_node *const addr = get_global_var_address(dbgi, declaration); - ir_type *const irtype = get_entity_type(declaration->v.entity); - return deref_address(irtype, addr, dbgi); + return deref_address(dbgi, declaration->type, addr); } case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: { ir_entity *entity = declaration->v.entity; ir_node *frame = get_local_frame(entity); ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity); - ir_type *irtype = get_entity_type(entity); - return deref_address(irtype, sel, dbgi); + return deref_address(dbgi, declaration->type, sel); } case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY: return declaration->v.vla_base; + case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE: + case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE: case DECLARATION_KIND_COMPOUND_MEMBER: case DECLARATION_KIND_LABEL_BLOCK: panic("not implemented reference type"); @@ -1344,10 +1449,13 @@ static ir_node *reference_addr(const reference_expression_t *ref) declaration_t *declaration = ref->declaration; switch((declaration_kind_t) declaration->declaration_kind) { + case DECLARATION_KIND_TYPE: case DECLARATION_KIND_UNKNOWN: break; case DECLARATION_KIND_LOCAL_VARIABLE: - panic("local variable without entity has no address"); + /* you can store to a local variable (so we don't panic but return NULL + * as an indicator for no real address) */ + return NULL; case DECLARATION_KIND_FUNCTION: { type_t *const type = skip_typeref(ref->base.type); ir_mode *const mode = get_ir_mode(type); @@ -1371,6 +1479,8 @@ static ir_node *reference_addr(const reference_expression_t *ref) case DECLARATION_KIND_ENUM_ENTRY: panic("trying to reference enum entry"); + case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE: + case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE: case DECLARATION_KIND_COMPOUND_MEMBER: case DECLARATION_KIND_LABEL_BLOCK: panic("not implemented reference type"); @@ -1379,6 +1489,9 @@ static ir_node *reference_addr(const reference_expression_t *ref) panic("reference to declaration with unknown type found"); } +/** + * Transform calls to builtin functions. + */ static ir_node *process_builtin_call(const call_expression_t *call) { dbg_info *dbgi = get_dbg_info(&call->base.source_position); @@ -1394,7 +1507,7 @@ static ir_node *process_builtin_call(const call_expression_t *call) switch(symbol->ID) { case T___builtin_alloca: { - if(call->arguments == NULL || call->arguments->next != NULL) { + if (call->arguments == NULL || call->arguments->next != NULL) { panic("invalid number of parameters on __builtin_alloca"); } expression_t *argument = call->arguments->expression; @@ -1409,6 +1522,12 @@ static ir_node *process_builtin_call(const call_expression_t *call) return res; } + case T___builtin_huge_val: { + ir_mode *mode = get_ir_mode(function_type->function.return_type); + tarval *tv = get_mode_infinite(mode); + ir_node *res = new_d_Const(dbgi, mode, tv); + return res; + } case T___builtin_nan: case T___builtin_nanf: case T___builtin_nand: { @@ -1426,14 +1545,46 @@ static ir_node *process_builtin_call(const call_expression_t *call) } } +/** + * Transform a call expression. + * Handles some special cases, like alloca() calls, which must be resolved + * BEFORE the inlines runs. Inlining routines calling alloca() is dangerous, + * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not + * handled right... + */ static ir_node *call_expression_to_firm(const call_expression_t *call) { + dbg_info *dbgi = get_dbg_info(&call->base.source_position); assert(get_cur_block() != NULL); expression_t *function = call->function; - if(function->kind == EXPR_BUILTIN_SYMBOL) { + if (function->kind == EXPR_BUILTIN_SYMBOL) { return process_builtin_call(call); } + if (function->kind == EXPR_REFERENCE) { + const reference_expression_t *ref = &function->reference; + declaration_t *declaration = ref->declaration; + + if ((declaration_kind_t)declaration->declaration_kind == DECLARATION_KIND_FUNCTION) { + if (declaration->v.entity == rts_entities[rts_alloca]) { + /* handle alloca() call */ + expression_t *argument = call->arguments->expression; + ir_node *size = expression_to_firm(argument); + + size = create_conv(dbgi, size, get_ir_mode(type_size_t)); + + ir_node *store = get_store(); + dbg_info *dbgi = get_dbg_info(&call->base.source_position); + ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type, + stack_alloc); + ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M); + set_store(proj_m); + ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res); + + return res; + } + } + } ir_node *callee = expression_to_firm(function); type_t *type = skip_typeref(function->base.type); @@ -1443,55 +1594,56 @@ static ir_node *call_expression_to_firm(const call_expression_t *call) assert(is_type_function(points_to)); function_type_t *function_type = &points_to->function; - int n_parameters = 0; - call_argument_t *argument = call->arguments; - for( ; argument != NULL; argument = argument->next) { - ++n_parameters; - } - - dbg_info *dbgi = get_dbg_info(&call->base.source_position); - + int n_parameters = 0; ir_type *ir_method_type = get_ir_type((type_t*) function_type); ir_type *new_method_type = NULL; - if(function_type->variadic || function_type->unspecified_parameters) { + if (function_type->variadic || function_type->unspecified_parameters) { + const call_argument_t *argument = call->arguments; + for( ; argument != NULL; argument = argument->next) { + ++n_parameters; + } + /* we need to construct a new method type matching the call * arguments... */ int n_res = get_method_n_ress(ir_method_type); dbg_info *dbgi = get_dbg_info(&call->base.source_position); - new_method_type = new_d_type_method(unique_ident("calltype"), - n_parameters, n_res, dbgi); + new_method_type = new_d_type_method(id_unique("calltype.%u"), + n_parameters, n_res, dbgi); set_method_calling_convention(new_method_type, get_method_calling_convention(ir_method_type)); set_method_additional_properties(new_method_type, get_method_additional_properties(ir_method_type)); + set_method_variadicity(new_method_type, + get_method_variadicity(ir_method_type)); for(int i = 0; i < n_res; ++i) { set_method_res_type(new_method_type, i, get_method_res_type(ir_method_type, i)); } + argument = call->arguments; + for(int i = 0; i < n_parameters; ++i, argument = argument->next) { + expression_t *expression = argument->expression; + ir_type *irtype = get_ir_type(expression->base.type); + set_method_param_type(new_method_type, i, irtype); + } + ir_method_type = new_method_type; + } else { + n_parameters = get_method_n_params(ir_method_type); } + ir_node *in[n_parameters]; - argument = call->arguments; - int n = 0; - for( ; argument != NULL; argument = argument->next) { + const call_argument_t *argument = call->arguments; + for(int n = 0; n < n_parameters; ++n) { expression_t *expression = argument->expression; ir_node *arg_node = expression_to_firm(expression); arg_node = do_strict_conv(dbgi, arg_node); in[n] = arg_node; - if(new_method_type != NULL) { - ir_type *irtype = get_ir_type(expression->base.type); - set_method_param_type(new_method_type, n, irtype); - } - n++; + argument = argument->next; } - assert(n == n_parameters); - - if(new_method_type != NULL) - ir_method_type = new_method_type; ir_node *store = get_store(); ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in, @@ -1502,9 +1654,9 @@ static ir_node *call_expression_to_firm(const call_expression_t *call) type_t *return_type = skip_typeref(function_type->return_type); ir_node *result = NULL; - if(!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) { + if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) { ir_mode *mode; - if(is_type_scalar(return_type)) { + if (is_type_scalar(return_type)) { mode = get_ir_mode(return_type); } else { mode = mode_P_data; @@ -1531,9 +1683,11 @@ static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type, ir_node *memory = get_store(); - if(is_type_scalar(type)) { + if (is_type_scalar(type)) { ir_node *store = new_d_Store(dbgi, memory, addr, value); ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M); + if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) + set_Store_volatility(store, volatility_is_volatile); set_store(store_mem); } else { ir_type *irtype = get_ir_type(type); @@ -1550,7 +1704,7 @@ static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size) assert(offset >= 0 && size >= 0); assert(offset + size <= mode_size); - if(size == mode_size) { + if (size == mode_size) { return all_one; } @@ -1564,22 +1718,18 @@ static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size) return mask1; } -static void bitfield_store_to_firm(const unary_expression_t *expression, - ir_node *value) +static void bitfield_store_to_firm(const select_expression_t *expression, + ir_node *addr, ir_node *value) { - expression_t *select = expression->value; - assert(select->kind == EXPR_SELECT); - type_t *type = select->base.type; - assert(type->kind == TYPE_BITFIELD); - ir_mode *mode = get_ir_mode(type->bitfield.base); - ir_node *addr = expression_to_addr(select); + type_t *type = expression->base.type; + ir_mode *mode = get_ir_mode(type); - assert(get_irn_mode(value) == mode); + assert(get_irn_mode(value) == mode || is_Bad(value)); dbg_info *dbgi = get_dbg_info(&expression->base.source_position); /* kill upper bits of value and shift to right position */ - ir_entity *entity = select->select.compound_entry->v.entity; + ir_entity *entity = expression->compound_entry->v.entity; int bitoffset = get_entity_offset_bits_remainder(entity); ir_type *entity_type = get_entity_type(entity); int bitsize = get_mode_size_bits(get_type_mode(entity_type)); @@ -1606,63 +1756,136 @@ static void bitfield_store_to_firm(const unary_expression_t *expression, ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val); ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M); set_store(store_mem); + + if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) { + set_Load_volatility(load, volatility_is_volatile); + set_Store_volatility(store, volatility_is_volatile); + } } -static void set_value_for_expression(const expression_t *expression, - ir_node *value) +static ir_node *bitfield_extract_to_firm(const select_expression_t *expression, + ir_node *addr) +{ + dbg_info *dbgi = get_dbg_info(&expression->base.source_position); + type_t *type = expression->base.type; + ir_mode *mode = get_ir_mode(type); + ir_node *mem = get_store(); + ir_node *load = new_d_Load(dbgi, mem, addr, mode); + ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M); + ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res); + + load_res = create_conv(dbgi, load_res, mode_int); + + set_store(load_mem); + + /* kill upper bits */ + ir_entity *entity = expression->compound_entry->v.entity; + int bitoffset = get_entity_offset_bits_remainder(entity); + ir_type *entity_type = get_entity_type(entity); + int bitsize = get_mode_size_bits(get_type_mode(entity_type)); + long shift_bitsl = machine_size - bitoffset - bitsize; + assert(shift_bitsl >= 0); + tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint); + ir_node *countl = new_d_Const(dbgi, mode_uint, tvl); + ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int); + + long shift_bitsr = bitoffset + shift_bitsl; + assert(shift_bitsr <= (long) machine_size); + tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint); + ir_node *countr = new_d_Const(dbgi, mode_uint, tvr); + ir_node *shiftr; + if (mode_is_signed(mode)) { + shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int); + } else { + shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int); + } + + return create_conv(dbgi, shiftr, mode); +} + +static void set_value_for_expression_addr(const expression_t *expression, + ir_node *value, ir_node *addr) { dbg_info *dbgi = get_dbg_info(&expression->base.source_position); value = do_strict_conv(dbgi, value); - if(expression->kind == EXPR_REFERENCE) { + if (expression->kind == EXPR_REFERENCE) { const reference_expression_t *ref = &expression->reference; declaration_t *declaration = ref->declaration; assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN); - if(declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) { + if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) { set_value(declaration->v.value_number, value); return; } } - if(expression->kind == EXPR_UNARY_BITFIELD_EXTRACT) { - bitfield_store_to_firm(&expression->unary, value); - return; + if (addr == NULL) + addr = expression_to_addr(expression); + + type_t *type = skip_typeref(expression->base.type); + + if (expression->kind == EXPR_SELECT) { + const select_expression_t *select = &expression->select; + + declaration_t *declaration = select->compound_entry; + if (declaration->type->kind == TYPE_BITFIELD) { + bitfield_store_to_firm(select, addr, value); + return; + } } - ir_node *addr = expression_to_addr(expression); - type_t *type = skip_typeref(expression->base.type); assign_value(dbgi, addr, type, value); } -static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode) +static void set_value_for_expression(const expression_t *expression, + ir_node *value) { - ir_mode *value_mode = get_irn_mode(value); + set_value_for_expression_addr(expression, value, NULL); +} - if (value_mode == dest_mode || is_Bad(value)) - return value; +static ir_node *get_value_from_lvalue(const expression_t *expression, + ir_node *addr) +{ + if (expression->kind == EXPR_REFERENCE) { + const reference_expression_t *ref = &expression->reference; - if(dest_mode == mode_b) { - ir_node *zero = new_Const(value_mode, get_mode_null(value_mode)); - ir_node *cmp = new_d_Cmp(dbgi, value, zero); - ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg); - return proj; + declaration_t *declaration = ref->declaration; + assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN); + if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) { + assert(addr == NULL); + ir_mode *mode = get_ir_mode(expression->base.type); + return get_value(declaration->v.value_number, mode); + } } - return new_d_Conv(dbgi, value, dest_mode); + assert(addr != NULL); + dbg_info *dbgi = get_dbg_info(&expression->base.source_position); + + ir_node *value; + if (expression->kind == EXPR_SELECT && + expression->select.compound_entry->type->kind == TYPE_BITFIELD){ + value = bitfield_extract_to_firm(&expression->select, addr); + } else { + value = deref_address(dbgi, expression->base.type, addr); + } + + return value; } + static ir_node *create_incdec(const unary_expression_t *expression) { - dbg_info *dbgi = get_dbg_info(&expression->base.source_position); - type_t *type = skip_typeref(expression->base.type); - ir_mode *mode = get_ir_mode(type); - expression_t *value = expression->value; + dbg_info *const dbgi = get_dbg_info(&expression->base.source_position); + const expression_t *value_expr = expression->value; + ir_node *addr = expression_to_addr(value_expr); + ir_node *value = get_value_from_lvalue(value_expr, addr); - ir_node *value_node = expression_to_firm(value); + type_t *type = skip_typeref(expression->base.type); + ir_mode *mode = get_ir_mode(expression->base.type); ir_node *offset; - if(is_type_pointer(type)) { + if (is_type_pointer(type)) { pointer_type_t *pointer_type = &type->pointer; offset = get_type_size(pointer_type->points_to); } else { @@ -1670,31 +1893,32 @@ static ir_node *create_incdec(const unary_expression_t *expression) offset = new_Const(mode, get_mode_one(mode)); } + ir_node *result; + ir_node *store_value; switch(expression->base.kind) { - case EXPR_UNARY_POSTFIX_INCREMENT: { - ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode); - set_value_for_expression(value, new_value); - return value_node; - } - case EXPR_UNARY_POSTFIX_DECREMENT: { - ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode); - set_value_for_expression(value, new_value); - return value_node; - } - case EXPR_UNARY_PREFIX_INCREMENT: { - ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode); - set_value_for_expression(value, new_value); - return new_value; - } - case EXPR_UNARY_PREFIX_DECREMENT: { - ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode); - set_value_for_expression(value, new_value); - return new_value; - } + case EXPR_UNARY_POSTFIX_INCREMENT: + result = value; + store_value = new_d_Add(dbgi, value, offset, mode); + break; + case EXPR_UNARY_POSTFIX_DECREMENT: + result = value; + store_value = new_d_Sub(dbgi, value, offset, mode); + break; + case EXPR_UNARY_PREFIX_INCREMENT: + result = new_d_Add(dbgi, value, offset, mode); + store_value = result; + break; + case EXPR_UNARY_PREFIX_DECREMENT: + result = new_d_Sub(dbgi, value, offset, mode); + store_value = result; + break; default: panic("no incdec expr in create_incdec"); - return NULL; } + + set_value_for_expression_addr(value_expr, store_value, addr); + + return result; } static bool is_local_variable(expression_t *expression) @@ -1812,56 +2036,12 @@ static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) { } } -static ir_node *bitfield_extract_to_firm(const unary_expression_t *expression) -{ - expression_t *select = expression->value; - assert(select->kind == EXPR_SELECT); - - type_t *type = select->base.type; - assert(type->kind == TYPE_BITFIELD); - ir_mode *mode = get_ir_mode(type->bitfield.base); - dbg_info *dbgi = get_dbg_info(&expression->base.source_position); - ir_node *addr = expression_to_addr(select); - ir_node *mem = get_store(); - ir_node *load = new_d_Load(dbgi, mem, addr, mode); - ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M); - ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res); - - load_res = create_conv(dbgi, load_res, mode_int); - - set_store(load_mem); - - /* kill upper bits */ - ir_entity *entity = select->select.compound_entry->v.entity; - int bitoffset = get_entity_offset_bits_remainder(entity); - ir_type *entity_type = get_entity_type(entity); - int bitsize = get_mode_size_bits(get_type_mode(entity_type)); - long shift_bitsl = machine_size - bitoffset - bitsize; - assert(shift_bitsl >= 0); - tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint); - ir_node *countl = new_d_Const(dbgi, mode_uint, tvl); - ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int); - - long shift_bitsr = bitoffset + shift_bitsl; - assert(shift_bitsr <= (long) machine_size); - tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint); - ir_node *countr = new_d_Const(dbgi, mode_uint, tvr); - ir_node *shiftr; - if(mode_is_signed(mode)) { - shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int); - } else { - shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int); - } - - return create_conv(dbgi, shiftr, mode); -} - static ir_node *unary_expression_to_firm(const unary_expression_t *expression) { dbg_info *dbgi = get_dbg_info(&expression->base.source_position); type_t *type = skip_typeref(expression->base.type); - if(expression->base.kind == EXPR_UNARY_TAKE_ADDRESS) + if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS) return expression_to_addr(expression->value); const expression_t *value = expression->value; @@ -1880,24 +2060,17 @@ static ir_node *unary_expression_to_firm(const unary_expression_t *expression) return new_d_Not(dbgi, value_node, mode); } case EXPR_UNARY_NOT: { - ir_node *value_node = expression_to_firm(value); - ir_mode *mode = get_ir_mode(type); - if(get_irn_mode(value_node) != mode_b) { - value_node = create_conv(dbgi, value_node, mode_b); - } - value_node = new_d_Not(dbgi, value_node, mode_b); - if(mode != mode_b) { - value_node = create_conv(dbgi, value_node, mode); - } - return value_node; + ir_node *value_node = _expression_to_firm(value); + value_node = create_conv(dbgi, value_node, mode_b); + ir_node *res = new_d_Not(dbgi, value_node, mode_b); + return res; } case EXPR_UNARY_DEREFERENCE: { ir_node *value_node = expression_to_firm(value); type_t *value_type = skip_typeref(value->base.type); - ir_type *irtype = get_ir_type(value_type); - assert(is_Pointer_type(irtype)); - ir_type *points_to = get_pointer_points_to_type(irtype); - return deref_address(points_to, value_node, dbgi); + assert(is_type_pointer(value_type)); + type_t *points_to = value_type->pointer.points_to; + return deref_address(dbgi, points_to, value_node); } case EXPR_UNARY_POSTFIX_INCREMENT: case EXPR_UNARY_POSTFIX_DECREMENT: @@ -1906,7 +2079,7 @@ static ir_node *unary_expression_to_firm(const unary_expression_t *expression) return create_incdec(expression); case EXPR_UNARY_CAST: { ir_node *value_node = expression_to_firm(value); - if(is_type_scalar(type)) { + if (is_type_scalar(type)) { ir_mode *mode = get_ir_mode(type); ir_node *node = create_conv(dbgi, value_node, mode); node = do_strict_conv(dbgi, node); @@ -1919,7 +2092,7 @@ static ir_node *unary_expression_to_firm(const unary_expression_t *expression) } case EXPR_UNARY_CAST_IMPLICIT: { ir_node *value_node = expression_to_firm(value); - if(is_type_scalar(type)) { + if (is_type_scalar(type)) { ir_mode *mode = get_ir_mode(type); return create_conv(dbgi, value_node, mode); } else { @@ -1927,12 +2100,10 @@ static ir_node *unary_expression_to_firm(const unary_expression_t *expression) } } case EXPR_UNARY_ASSUME: - if(firm_opt.confirm) + if (firm_opt.confirm) return handle_assume(dbgi, value); else return NULL; - case EXPR_UNARY_BITFIELD_EXTRACT: - return bitfield_extract_to_firm(expression); default: break; @@ -1940,6 +2111,9 @@ static ir_node *unary_expression_to_firm(const unary_expression_t *expression) panic("invalid UNEXPR type found"); } +/** + * produces a 0/1 depending of the value of a mode_b node + */ static ir_node *produce_condition_result(const expression_t *expression, dbg_info *dbgi) { @@ -1956,266 +2130,200 @@ static ir_node *produce_condition_result(const expression_t *expression, set_cur_block(cur_block); create_condition_evaluation(expression, one_block, zero_block); - mature_immBlock(one_block); - mature_immBlock(zero_block); - - ir_node *common_block = new_immBlock(); - add_immBlock_pred(common_block, jmp_one); - add_immBlock_pred(common_block, jmp_zero); - mature_immBlock(common_block); - - ir_node *in[2] = { one, zero }; - ir_node *val = new_d_Phi(dbgi, 2, in, mode); - - return val; -} - -static ir_node *create_lazy_op(const binary_expression_t *expression) -{ - dbg_info *dbgi = get_dbg_info(&expression->base.source_position); - type_t *type = expression->base.type; - ir_mode *mode = get_ir_mode(type); - - if(is_constant_expression(expression->left)) { - long val = fold_constant(expression->left); - expression_kind_t ekind = expression->base.kind; - if((ekind == EXPR_BINARY_LOGICAL_AND && val != 0) - || (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) { - return expression_to_firm(expression->right); - } else { - assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0) - || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0)); - return new_Const(mode, get_mode_one(mode)); - } - } - - return produce_condition_result((const expression_t*) expression, dbgi); -} - -typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left, - ir_node *right, ir_mode *mode); - -static ir_node *create_arithmetic_binop(const binary_expression_t *expression, - create_arithmetic_func func) -{ - 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); - type_t *type = expression->right->base.type; - /* be careful with the modes, because in arithmetic assign nodes only - * the right operand has the mode of the arithmetic already */ - ir_mode *mode = get_ir_mode(type); - left = create_conv(dbgi, left, mode); - ir_node *res = func(dbgi, left, right, mode); - - return res; -} - -static ir_node *pointer_arithmetic(ir_node *const pointer, - ir_node * integer, - type_t *const type, - dbg_info *const dbgi, - const create_arithmetic_func func) -{ - pointer_type_t *const pointer_type = &type->pointer; - type_t *const points_to = pointer_type->points_to; - const unsigned elem_size = get_type_size_const(points_to); - - assert(elem_size >= 1); - if (elem_size > 1) { - integer = create_conv(dbgi, integer, mode_int); - ir_node *const cnst = new_Const_long(mode_int, (long)elem_size); - ir_node *const mul = new_d_Mul(dbgi, integer, cnst, mode_int); - integer = mul; - } - - ir_mode *const mode = get_ir_mode(type); - return func(dbgi, pointer, integer, mode); -} - -static ir_node *create_arithmetic_assign_binop( - const binary_expression_t *expression, create_arithmetic_func func) -{ - dbg_info *const dbgi = get_dbg_info(&expression->base.source_position); - type_t *const type = skip_typeref(expression->base.type); - ir_node *value; - - if (is_type_pointer(type)) { - ir_node *const pointer = expression_to_firm(expression->left); - ir_node * integer = expression_to_firm(expression->right); - value = pointer_arithmetic(pointer, integer, type, dbgi, func); - } else { - value = create_arithmetic_binop(expression, func); - } - - ir_mode *const mode = get_ir_mode(type); - value = create_conv(dbgi, value, mode); - set_value_for_expression(expression->left, value); - - return value; -} - -static ir_node *create_add(const binary_expression_t *expression) -{ - 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); - type_t *type = expression->base.type; + mature_immBlock(one_block); + mature_immBlock(zero_block); - expression_t *expr_left = expression->left; - expression_t *expr_right = expression->right; - type_t *type_left = skip_typeref(expr_left->base.type); - type_t *type_right = skip_typeref(expr_right->base.type); + ir_node *common_block = new_immBlock(); + add_immBlock_pred(common_block, jmp_one); + add_immBlock_pred(common_block, jmp_zero); + mature_immBlock(common_block); - if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) { - ir_mode *const mode = get_ir_mode(type); - return new_d_Add(dbgi, left, right, mode); - } + ir_node *in[2] = { one, zero }; + ir_node *val = new_d_Phi(dbgi, 2, in, mode); - if (is_type_pointer(type_left)) { - return pointer_arithmetic(left, right, type, dbgi, new_d_Add); - } else { - assert(is_type_pointer(type_right)); - return pointer_arithmetic(right, left, type, dbgi, new_d_Add); - } + return val; } -static ir_node *create_sub(const binary_expression_t *expression) +static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi, + ir_node *value, type_t *type) { - dbg_info *const dbgi = get_dbg_info(&expression->base.source_position); - expression_t *const expr_left = expression->left; - expression_t *const expr_right = expression->right; - ir_node *const left = expression_to_firm(expr_left); - ir_node *const right = expression_to_firm(expr_right); - type_t *const type = expression->base.type; - type_t *const type_left = skip_typeref(expr_left->base.type); - type_t *const type_right = skip_typeref(expr_right->base.type); - - if (is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) { - ir_mode *const mode = get_ir_mode(type); - return new_d_Sub(dbgi, left, right, mode); - } else if (is_type_pointer(type_left) && is_type_pointer(type_right)) { - const pointer_type_t *const ptr_type = &type_left->pointer; + pointer_type_t *const pointer_type = &type->pointer; + type_t *const points_to = skip_typeref(pointer_type->points_to); + unsigned elem_size = get_type_size_const(points_to); - ir_node *const elem_size = get_type_size(ptr_type->points_to); - ir_mode *const mode = get_ir_mode(type); - ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode); - ir_node *const sub = new_d_Sub(dbgi, left, right, mode); - ir_node *const no_mem = new_NoMem(); - ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size, mode, - op_pin_state_floats); - return new_d_Proj(dbgi, div, mode, pn_Div_res); + /* gcc extension */ + if (elem_size == 0 && is_type_atomic(points_to, ATOMIC_TYPE_VOID)) { + elem_size = 1; } - assert(is_type_pointer(type_left)); - return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub); + assert(elem_size >= 1); + if (elem_size == 1) + return value; + + value = create_conv(dbgi, value, mode_int); + ir_node *const cnst = new_Const_long(mode_int, (long)elem_size); + ir_node *const mul = new_d_Mul(dbgi, value, cnst, mode_int); + return mul; } -static ir_node *create_shift(const binary_expression_t *expression) +static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression, + ir_node *left, ir_node *right) { - 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); - type_t *type = expression->base.type; - ir_mode *mode = get_ir_mode(type); - - /* firm always wants the shift count to be unsigned */ - right = create_conv(dbgi, right, mode_uint); + ir_mode *mode; + type_t *type_left = skip_typeref(expression->left->base.type); + type_t *type_right = skip_typeref(expression->right->base.type); - ir_node *res; + expression_kind_t kind = expression->base.kind; - switch(expression->base.kind) { - case EXPR_BINARY_SHIFTLEFT_ASSIGN: + switch (kind) { case EXPR_BINARY_SHIFTLEFT: - res = new_d_Shl(dbgi, left, right, mode); - break; + case EXPR_BINARY_SHIFTRIGHT: + case EXPR_BINARY_SHIFTLEFT_ASSIGN: case EXPR_BINARY_SHIFTRIGHT_ASSIGN: - case EXPR_BINARY_SHIFTRIGHT: { - expression_t *expr_left = expression->left; - type_t *type_left = skip_typeref(expr_left->base.type); - - if(is_type_signed(type_left)) { - res = new_d_Shrs(dbgi, left, right, mode); - } else { - res = new_d_Shr(dbgi, left, right, mode); - } - break; - } - default: - panic("create shift op called for non-shift op"); - } + mode = get_irn_mode(left); + right = create_conv(dbgi, right, mode_uint); + break; - return res; -} + case EXPR_BINARY_SUB: + if (is_type_pointer(type_left) && is_type_pointer(type_right)) { + const pointer_type_t *const ptr_type = &type_left->pointer; + + mode = get_ir_mode(expression->base.type); + ir_node *const elem_size = get_type_size(ptr_type->points_to); + ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode); + ir_node *const sub = new_d_Sub(dbgi, left, right, mode); + ir_node *const no_mem = new_NoMem(); + ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size, + mode, op_pin_state_floats); + return new_d_Proj(dbgi, div, mode, pn_Div_res); + } + /* fallthrough */ + case EXPR_BINARY_SUB_ASSIGN: + if (is_type_pointer(type_left)) { + right = adjust_for_pointer_arithmetic(dbgi, right, type_left); + mode = get_ir_mode(type_left); + break; + } + goto normal_node; + case EXPR_BINARY_ADD: + case EXPR_BINARY_ADD_ASSIGN: + if (is_type_pointer(type_left)) { + right = adjust_for_pointer_arithmetic(dbgi, right, type_left); + mode = get_ir_mode(type_left); + break; + } else if (is_type_pointer(type_right)) { + left = adjust_for_pointer_arithmetic(dbgi, left, type_right); + mode = get_ir_mode(type_right); + break; + } + goto normal_node; -static ir_node *create_divmod(const binary_expression_t *expression) -{ - 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 *pin = new_Pin(new_NoMem()); - /* be careful with the modes, because in arithmetic assign nodes only - * the right operand has the mode of the arithmetic already */ - type_t *type = expression->right->base.type; - ir_mode *mode = get_ir_mode(type); - left = create_conv(dbgi, left, mode); - ir_node *op; - ir_node *res; + default: +normal_node: + mode = get_irn_mode(right); + left = create_conv(dbgi, left, mode); + break; + } - switch (expression->base.kind) { + switch (kind) { + case EXPR_BINARY_ADD_ASSIGN: + case EXPR_BINARY_ADD: + return new_d_Add(dbgi, left, right, mode); + case EXPR_BINARY_SUB_ASSIGN: + case EXPR_BINARY_SUB: + return new_d_Sub(dbgi, left, right, mode); + case EXPR_BINARY_MUL_ASSIGN: + case EXPR_BINARY_MUL: + return new_d_Mul(dbgi, left, right, mode); + case EXPR_BINARY_BITWISE_AND: + case EXPR_BINARY_BITWISE_AND_ASSIGN: + return new_d_And(dbgi, left, right, mode); + case EXPR_BINARY_BITWISE_OR: + case EXPR_BINARY_BITWISE_OR_ASSIGN: + return new_d_Or(dbgi, left, right, mode); + case EXPR_BINARY_BITWISE_XOR: + case EXPR_BINARY_BITWISE_XOR_ASSIGN: + return new_d_Eor(dbgi, left, right, mode); + case EXPR_BINARY_SHIFTLEFT: + case EXPR_BINARY_SHIFTLEFT_ASSIGN: + return new_d_Shl(dbgi, left, right, mode); + case EXPR_BINARY_SHIFTRIGHT: + case EXPR_BINARY_SHIFTRIGHT_ASSIGN: + if (mode_is_signed(mode)) { + return new_d_Shrs(dbgi, left, right, mode); + } else { + return new_d_Shr(dbgi, left, right, mode); + } case EXPR_BINARY_DIV: - case EXPR_BINARY_DIV_ASSIGN: - if(mode_is_float(mode)) { + 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); } - break; - + return res; + } case EXPR_BINARY_MOD: - case EXPR_BINARY_MOD_ASSIGN: + case EXPR_BINARY_MOD_ASSIGN: { + ir_node *pin = new_Pin(new_NoMem()); assert(!mode_is_float(mode)); - op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats); - res = new_d_Proj(dbgi, op, mode, pn_Mod_res); - break; - - default: panic("unexpected binary expression type in create_divmod()"); + ir_node *op = new_d_Mod(dbgi, pin, left, right, mode, + op_pin_state_floats); + ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res); + return res; + } + default: + panic("unexpected expression kind"); } - - return res; } -static ir_node *create_arithmetic_assign_divmod( - const binary_expression_t *expression) +static ir_node *create_lazy_op(const binary_expression_t *expression) { - ir_node * value = create_divmod(expression); - dbg_info *const dbgi = get_dbg_info(&expression->base.source_position); - type_t *const type = expression->base.type; - ir_mode *const mode = get_ir_mode(type); - - assert(type->kind != TYPE_POINTER); + dbg_info *dbgi = get_dbg_info(&expression->base.source_position); + type_t *type = expression->base.type; + ir_mode *mode = get_ir_mode(type); - value = create_conv(dbgi, value, mode); - set_value_for_expression(expression->left, value); + if (is_constant_expression(expression->left)) { + long val = fold_constant(expression->left); + expression_kind_t ekind = expression->base.kind; + if ((ekind == EXPR_BINARY_LOGICAL_AND && val != 0) + || (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) { + return expression_to_firm(expression->right); + } else { + assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0) + || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0)); + return new_Const(mode, get_mode_one(mode)); + } + } - return value; + return produce_condition_result((const expression_t*) expression, dbgi); } -static ir_node *create_arithmetic_assign_shift( - const binary_expression_t *expression) +typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left, + ir_node *right, ir_mode *mode); + +static ir_node *create_assign_binop(const binary_expression_t *expression) { - ir_node * value = create_shift(expression); - dbg_info *const dbgi = get_dbg_info(&expression->base.source_position); - type_t *const type = expression->base.type; - ir_mode *const mode = get_ir_mode(type); + dbg_info *const dbgi = get_dbg_info(&expression->base.source_position); + const expression_t *left_expr = expression->left; + ir_mode *left_mode = get_ir_mode(left_expr->base.type); + ir_node *left_addr = expression_to_addr(left_expr); + ir_node *left = get_value_from_lvalue(left_expr, left_addr); + ir_node *right = expression_to_firm(expression->right); + ir_node *result = create_op(dbgi, expression, left, right); - value = create_conv(dbgi, value, mode); - set_value_for_expression(expression->left, value); + result = create_conv(dbgi, result, left_mode); + result = do_strict_conv(dbgi, result); - return value; + set_value_for_expression_addr(left_expr, result, left_addr); + + return result; } static ir_node *binary_expression_to_firm(const binary_expression_t *expression) @@ -2244,55 +2352,49 @@ static ir_node *binary_expression_to_firm(const binary_expression_t *expression) return proj; } case EXPR_BINARY_ASSIGN: { + ir_node *addr = expression_to_addr(expression->left); ir_node *right = expression_to_firm(expression->right); - set_value_for_expression(expression->left, right); + set_value_for_expression_addr(expression->left, right, addr); return right; } case EXPR_BINARY_ADD: - return create_add(expression); case EXPR_BINARY_SUB: - return create_sub(expression); case EXPR_BINARY_MUL: - return create_arithmetic_binop(expression, new_d_Mul); + case EXPR_BINARY_DIV: + case EXPR_BINARY_MOD: case EXPR_BINARY_BITWISE_AND: - return create_arithmetic_binop(expression, new_d_And); case EXPR_BINARY_BITWISE_OR: - return create_arithmetic_binop(expression, new_d_Or); case EXPR_BINARY_BITWISE_XOR: - return create_arithmetic_binop(expression, new_d_Eor); case EXPR_BINARY_SHIFTLEFT: case EXPR_BINARY_SHIFTRIGHT: - return create_shift(expression); - case EXPR_BINARY_DIV: - case EXPR_BINARY_MOD: - return create_divmod(expression); + { + 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); + return create_op(dbgi, expression, left, right); + } case EXPR_BINARY_LOGICAL_AND: case EXPR_BINARY_LOGICAL_OR: return create_lazy_op(expression); case EXPR_BINARY_COMMA: - expression_to_firm(expression->left); - return expression_to_firm(expression->right); + /* create side effects of left side */ + (void) expression_to_firm(expression->left); + return _expression_to_firm(expression->right); + case EXPR_BINARY_ADD_ASSIGN: - return create_arithmetic_assign_binop(expression, new_d_Add); case EXPR_BINARY_SUB_ASSIGN: - return create_arithmetic_assign_binop(expression, new_d_Sub); case EXPR_BINARY_MUL_ASSIGN: - return create_arithmetic_assign_binop(expression, new_d_Mul); case EXPR_BINARY_MOD_ASSIGN: case EXPR_BINARY_DIV_ASSIGN: - return create_arithmetic_assign_divmod(expression); case EXPR_BINARY_BITWISE_AND_ASSIGN: - return create_arithmetic_assign_binop(expression, new_d_And); case EXPR_BINARY_BITWISE_OR_ASSIGN: - return create_arithmetic_assign_binop(expression, new_d_Or); case EXPR_BINARY_BITWISE_XOR_ASSIGN: - return create_arithmetic_assign_binop(expression, new_d_Eor); case EXPR_BINARY_SHIFTLEFT_ASSIGN: case EXPR_BINARY_SHIFTRIGHT_ASSIGN: - return create_arithmetic_assign_shift(expression); + return create_assign_binop(expression); case EXPR_BINARY_BUILTIN_EXPECT: - return expression_to_firm(expression->left); + return _expression_to_firm(expression->left); default: panic("TODO binexpr type"); } @@ -2303,15 +2405,24 @@ static ir_node *array_access_addr(const array_access_expression_t *expression) dbg_info *dbgi = get_dbg_info(&expression->base.source_position); ir_node *base_addr = expression_to_firm(expression->array_ref); ir_node *offset = expression_to_firm(expression->index); - offset = create_conv(dbgi, offset, mode_uint); + + type_t *offset_type = skip_typeref(expression->index->base.type); + ir_mode *mode; + if (is_type_signed(offset_type)) { + mode = get_ir_mode(type_ssize_t); + } else { + mode = get_ir_mode(type_size_t); + } + offset = create_conv(dbgi, offset, mode); type_t *ref_type = skip_typeref(expression->array_ref->base.type); assert(is_type_pointer(ref_type)); pointer_type_t *pointer_type = &ref_type->pointer; ir_node *elem_size_const = get_type_size(pointer_type->points_to); + elem_size_const = create_conv(dbgi, elem_size_const, mode); ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const, - mode_uint); + mode); ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data); return result; @@ -2325,9 +2436,8 @@ static ir_node *array_access_to_firm( type_t *type = revert_automatic_type_conversion( (const expression_t*) expression); type = skip_typeref(type); - ir_type *irtype = get_ir_type(type); - return deref_address(irtype, addr, dbgi); + return deref_address(dbgi, type, addr); } static long get_offsetof_offset(const offsetof_expression_t *expression) @@ -2341,14 +2451,14 @@ static long get_offsetof_offset(const offsetof_expression_t *expression) /* be sure the type is constructed */ (void) get_ir_type(type); - if(designator->symbol != NULL) { + if (designator->symbol != NULL) { assert(is_type_compound(type)); symbol_t *symbol = designator->symbol; declaration_t *declaration = type->compound.declaration; declaration_t *iter = declaration->scope.declarations; for( ; iter != NULL; iter = iter->next) { - if(iter->symbol == symbol) { + if (iter->symbol == symbol) { break; } } @@ -2399,7 +2509,7 @@ static ir_node *compound_literal_to_firm( /* create an entity on the stack */ ir_type *frame_type = get_irg_frame_type(current_ir_graph); - ident *const id = unique_ident("CompLit"); + ident *const id = id_unique("CompLit.%u"); ir_type *const irtype = get_ir_type(type); dbg_info *const dbgi = get_dbg_info(&expression->base.source_position); ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi); @@ -2423,14 +2533,14 @@ static ir_node *compound_literal_to_firm( static ir_node *sizeof_to_firm(const typeprop_expression_t *expression) { type_t *type = expression->type; - if(type == NULL) { + if (type == NULL) { type = expression->tp_expression->base.type; assert(type != NULL); } type = skip_typeref(type); /* § 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */ - if(is_type_array(type) && type->array.is_vla + if (is_type_array(type) && type->array.is_vla && expression->tp_expression != NULL) { expression_to_firm(expression->tp_expression); } @@ -2444,7 +2554,7 @@ static ir_node *sizeof_to_firm(const typeprop_expression_t *expression) static ir_node *alignof_to_firm(const typeprop_expression_t *expression) { type_t *type = expression->type; - if(type == NULL) { + if (type == NULL) { /* beware: if expression is a variable reference, return the alignment of the variable. */ const expression_t *tp_expression = expression->tp_expression; @@ -2465,27 +2575,32 @@ static ir_node *alignof_to_firm(const typeprop_expression_t *expression) static void init_ir_types(void); long fold_constant(const expression_t *expression) { + bool constant_folding_old = constant_folding; + constant_folding = true; + init_ir_types(); assert(is_constant_expression(expression)); ir_graph *old_current_ir_graph = current_ir_graph; - if(current_ir_graph == NULL) { + if (current_ir_graph == NULL) { current_ir_graph = get_const_code_irg(); } ir_node *cnst = expression_to_firm(expression); current_ir_graph = old_current_ir_graph; - if(!is_Const(cnst)) { + if (!is_Const(cnst)) { panic("couldn't fold constant\n"); } tarval *tv = get_Const_tarval(cnst); - if(!tarval_is_long(tv)) { + if (!tarval_is_long(tv)) { panic("result of constant folding is not integer\n"); } + constant_folding = constant_folding_old; + return get_tarval_long(tv); } @@ -2494,9 +2609,9 @@ 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)) { long val = fold_constant(expression->condition); - if(val) { + if (val) { return expression_to_firm(expression->true_expression); } else { return expression_to_firm(expression->false_expression); @@ -2541,12 +2656,22 @@ static ir_node *conditional_to_firm(const conditional_expression_t *expression) return val; } +/** + * Returns an IR-node representing the address of a field. + */ static ir_node *select_addr(const select_expression_t *expression) { dbg_info *dbgi = get_dbg_info(&expression->base.source_position); ir_node *compound_addr = expression_to_firm(expression->compound); + /* make sure the type is constructed */ + type_t *type = skip_typeref(expression->compound->base.type); + if (is_type_pointer(type)) { + type = type->pointer.points_to; + } + (void) get_ir_type(type); + declaration_t *entry = expression->compound_entry; assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER); ir_entity *entity = entry->v.entity; @@ -2560,14 +2685,20 @@ static ir_node *select_addr(const select_expression_t *expression) static ir_node *select_to_firm(const select_expression_t *expression) { - dbg_info *dbgi = get_dbg_info(&expression->base.source_position); - ir_node *addr = select_addr(expression); - type_t *type = revert_automatic_type_conversion( + dbg_info *dbgi = get_dbg_info(&expression->base.source_position); + ir_node *addr = select_addr(expression); + type_t *type = revert_automatic_type_conversion( (const expression_t*) expression); - type = skip_typeref(type); - ir_type *irtype = get_ir_type(type); + type = skip_typeref(type); - return deref_address(irtype, addr, dbgi); + declaration_t *entry = expression->compound_entry; + type_t *entry_type = skip_typeref(entry->type); + + if (entry_type->kind == TYPE_BITFIELD) { + return bitfield_extract_to_firm(expression, addr); + } + + return deref_address(dbgi, type, addr); } /* Values returned by __builtin_classify_type. */ @@ -2597,7 +2728,7 @@ typedef enum gcc_type_class static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr) { - const type_t *const type = expr->type_expression->base.type; + const type_t *const type = skip_typeref(expr->type_expression->base.type); gcc_type_class tc; switch (type->kind) @@ -2608,12 +2739,12 @@ static ir_node *classify_type_to_firm(const classify_type_expression_t *const ex /* should not be reached */ case ATOMIC_TYPE_INVALID: tc = no_type_class; - break; + goto make_const; /* gcc cannot do that */ case ATOMIC_TYPE_VOID: tc = void_type_class; - break; + goto make_const; case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */ case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */ @@ -2628,46 +2759,40 @@ static ir_node *classify_type_to_firm(const classify_type_expression_t *const ex case ATOMIC_TYPE_ULONGLONG: case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */ tc = integer_type_class; - break; + goto make_const; case ATOMIC_TYPE_FLOAT: case ATOMIC_TYPE_DOUBLE: case ATOMIC_TYPE_LONG_DOUBLE: tc = real_type_class; - break; - -#ifdef PROVIDE_COMPLEX - case ATOMIC_TYPE_FLOAT_COMPLEX: - case ATOMIC_TYPE_DOUBLE_COMPLEX: - case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX: - tc = complex_type_class; - break; - case ATOMIC_TYPE_FLOAT_IMAGINARY: - case ATOMIC_TYPE_DOUBLE_IMAGINARY: - case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY: - tc = complex_type_class; - break; -#endif - - default: - panic("Unimplemented case in classify_type_to_firm()."); + goto make_const; } - break; + panic("Unexpected atomic type in classify_type_to_firm()."); } + case TYPE_COMPLEX: tc = complex_type_class; goto make_const; + case TYPE_IMAGINARY: tc = complex_type_class; goto make_const; + case TYPE_BITFIELD: tc = integer_type_class; goto make_const; case TYPE_ARRAY: /* gcc handles this as pointer */ case TYPE_FUNCTION: /* gcc handles this as pointer */ - case TYPE_POINTER: tc = pointer_type_class; break; - case TYPE_COMPOUND_STRUCT: tc = record_type_class; break; - case TYPE_COMPOUND_UNION: tc = union_type_class; break; + case TYPE_POINTER: tc = pointer_type_class; goto make_const; + case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const; + case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const; /* gcc handles this as integer */ - case TYPE_ENUM: tc = integer_type_class; break; - - default: - panic("Unimplemented case in classify_type_to_firm()."); + case TYPE_ENUM: tc = integer_type_class; goto make_const; + + case TYPE_BUILTIN: + /* typedef/typeof should be skipped already */ + case TYPE_TYPEDEF: + case TYPE_TYPEOF: + case TYPE_INVALID: + case TYPE_ERROR: + break; } + panic("unexpected TYPE classify_type_to_firm()."); +make_const: ; dbg_info *const dbgi = get_dbg_info(&expr->base.source_position); ir_mode *const mode = mode_int; tarval *const tv = new_tarval_from_long(tc, mode); @@ -2675,16 +2800,30 @@ static ir_node *classify_type_to_firm(const classify_type_expression_t *const ex } static ir_node *function_name_to_firm( - const string_literal_expression_t *const expr) -{ - if (current_function_name == NULL) { - const source_position_t *const src_pos = &expr->base.source_position; - const char *const name = current_function_decl->symbol->string; - const string_t string = { name, strlen(name) + 1 }; - current_function_name = string_to_firm(src_pos, "__func__", &string); + const funcname_expression_t *const expr) +{ + switch(expr->kind) { + case FUNCNAME_FUNCTION: + case FUNCNAME_PRETTY_FUNCTION: + case FUNCNAME_FUNCDNAME: + if (current_function_name == NULL) { + const source_position_t *const src_pos = &expr->base.source_position; + const char *const name = current_function_decl->symbol->string; + const string_t string = { name, strlen(name) + 1 }; + current_function_name = string_to_firm(src_pos, "__func__.%u", &string); + } + return current_function_name; + case FUNCNAME_FUNCSIG: + if (current_funcsig == NULL) { + const source_position_t *const src_pos = &expr->base.source_position; + ir_entity *ent = get_irg_entity(current_ir_graph); + const char *const name = get_entity_ld_name(ent); + const string_t string = { name, strlen(name) + 1 }; + current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string); + } + return current_funcsig; } - - return current_function_name; + panic("Unsupported function name"); } static ir_node *statement_expression_to_firm(const statement_expression_t *expr) @@ -2716,14 +2855,17 @@ static ir_node *va_start_expression_to_firm( static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr) { - ir_type *const irtype = get_ir_type(expr->base.type); - ir_node *const ap = expression_to_firm(expr->ap); - dbg_info *const dbgi = get_dbg_info(&expr->base.source_position); - ir_node *const res = deref_address(irtype, ap, dbgi); + type_t *const type = expr->base.type; + expression_t *const ap_expr = expr->ap; + ir_node *const ap_addr = expression_to_addr(ap_expr); + ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr); + dbg_info *const dbgi = get_dbg_info(&expr->base.source_position); + ir_node *const res = deref_address(dbgi, type, ap); - ir_node *const cnst = get_type_size(expr->base.type); - ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data); - set_value_for_expression(expr->ap, add); + ir_node *const cnst = get_type_size(expr->base.type); + ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data); + + set_value_for_expression_addr(ap_expr, add, ap_addr); return res; } @@ -2734,6 +2876,9 @@ static ir_node *dereference_addr(const unary_expression_t *const expression) return expression_to_firm(expression->value); } +/** + * Returns a IR-node representing an lvalue of the given expression. + */ static ir_node *expression_to_addr(const expression_t *expression) { switch(expression->kind) { @@ -2777,8 +2922,20 @@ static ir_node *builtin_prefetch_to_firm( return NULL; } +/** + * creates firm nodes for an expression. The difference between this function + * and expression_to_firm is, that this version might produce mode_b nodes + * instead of mode_Is. + */ static ir_node *_expression_to_firm(const expression_t *expression) { +#ifndef NDEBUG + if (!constant_folding) { + assert(!expression->base.transformed); + ((expression_t*) expression)->base.transformed = true; + } +#endif + switch(expression->kind) { case EXPR_CHARACTER_CONSTANT: return character_constant_to_firm(&expression->conste); @@ -2810,9 +2967,8 @@ static ir_node *_expression_to_firm(const expression_t *expression) return select_to_firm(&expression->select); case EXPR_CLASSIFY_TYPE: return classify_type_to_firm(&expression->classify_type); - case EXPR_FUNCTION: - case EXPR_PRETTY_FUNCTION: - return function_name_to_firm(&expression->string); + case EXPR_FUNCNAME: + return function_name_to_firm(&expression->funcname); case EXPR_STATEMENT: return statement_expression_to_firm(&expression->statement); case EXPR_VA_START: @@ -2837,26 +2993,56 @@ static ir_node *_expression_to_firm(const expression_t *expression) panic("invalid expression found"); } +static bool produces_mode_b(const expression_t *expression) +{ + switch (expression->kind) { + case EXPR_BINARY_EQUAL: + case EXPR_BINARY_NOTEQUAL: + case EXPR_BINARY_LESS: + case EXPR_BINARY_LESSEQUAL: + case EXPR_BINARY_GREATER: + case EXPR_BINARY_GREATEREQUAL: + case EXPR_BINARY_ISGREATER: + case EXPR_BINARY_ISGREATEREQUAL: + case EXPR_BINARY_ISLESS: + case EXPR_BINARY_ISLESSEQUAL: + case EXPR_BINARY_ISLESSGREATER: + case EXPR_BINARY_ISUNORDERED: + case EXPR_UNARY_NOT: + return true; + + case EXPR_BINARY_BUILTIN_EXPECT: + return produces_mode_b(expression->binary.left); + case EXPR_BINARY_COMMA: + return produces_mode_b(expression->binary.right); + + default: + return false; + } +} + static ir_node *expression_to_firm(const expression_t *expression) { - ir_node *res = _expression_to_firm(expression); + if (!produces_mode_b(expression)) { + ir_node *res = _expression_to_firm(expression); + assert(res == NULL || get_irn_mode(res) != mode_b); + return res; + } - if(res != NULL && get_irn_mode(res) == mode_b) { + if (is_constant_expression(expression)) { + ir_node *res = _expression_to_firm(expression); ir_mode *mode = get_ir_mode(expression->base.type); - if(is_Const(res)) { - if(is_Const_null(res)) { - return new_Const_long(mode, 0); - } else { - assert(is_Const_one(res)); - return new_Const_long(mode, 1); - } + assert(is_Const(res)); + if (is_Const_null(res)) { + return new_Const_long(mode, 0); + } else { + return new_Const_long(mode, 1); } - - dbg_info *dbgi = get_dbg_info(&expression->base.source_position); - return produce_condition_result(expression, dbgi); } - return res; + /* we have to produce a 0/1 from the mode_b expression */ + dbg_info *dbgi = get_dbg_info(&expression->base.source_position); + return produce_condition_result(expression, dbgi); } static ir_node *expression_to_modeb(const expression_t *expression) @@ -2921,11 +3107,11 @@ static void create_condition_evaluation(const expression_t *expression, ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false); /* set branch prediction info based on __builtin_expect */ - if(expression->kind == EXPR_BINARY_BUILTIN_EXPECT) { + if (expression->kind == EXPR_BINARY_BUILTIN_EXPECT) { long cnst = fold_constant(expression->binary.right); cond_jmp_predicate pred; - if(cnst == 0) { + if (cnst == 0) { pred = COND_JMP_PRED_FALSE; } else { pred = COND_JMP_PRED_TRUE; @@ -2934,7 +3120,9 @@ static void create_condition_evaluation(const expression_t *expression, } add_immBlock_pred(true_block, true_proj); - add_immBlock_pred(false_block, false_proj); + if (false_block != NULL) { + add_immBlock_pred(false_block, false_proj); + } set_cur_block(NULL); } @@ -2945,20 +3133,29 @@ static void create_declaration_entity(declaration_t *declaration, declaration_kind_t declaration_kind, ir_type *parent_type) { + type_t *const type = skip_typeref(declaration->type); + if (is_type_function(type)) { + (void) get_function_entity(declaration); + return; + } + ident *const id = new_id_from_str(declaration->symbol->string); - ir_type *const irtype = get_ir_type(declaration->type); + ir_type *const irtype = get_ir_type(type); dbg_info *const dbgi = get_dbg_info(&declaration->source_position); ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi); - set_entity_ld_ident(entity, id); declaration->declaration_kind = (unsigned char) declaration_kind; declaration->v.entity = entity; set_entity_variability(entity, variability_uninitialized); - if(parent_type == get_tls_type()) + set_entity_ld_ident(entity, create_ld_ident(entity, declaration)); + if (parent_type == get_tls_type()) set_entity_allocation(entity, allocation_automatic); - else if(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE) + else if (declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE) set_entity_allocation(entity, allocation_static); - /* TODO: visibility? */ + + if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) { + set_entity_volatility(entity, volatility_is_volatile); + } } @@ -2985,10 +3182,10 @@ static __attribute__((unused)) void debug_print_type_path(const type_path_t *pat const type_path_entry_t *entry = & path->path[i]; type_t *type = skip_typeref(entry->type); - if(is_type_compound(type)) { + if (is_type_compound(type)) { fprintf(stderr, ".%s", entry->compound_entry->symbol->string); - } else if(is_type_array(type)) { - fprintf(stderr, "[%u]", entry->index); + } else if (is_type_array(type)) { + fprintf(stderr, "[%zd]", entry->index); } else { fprintf(stderr, "-INVALID-"); } @@ -3035,7 +3232,7 @@ static ir_initializer_t *get_initializer_entry(type_path_t *path) assert(is_type_compound(top_type) || is_type_array(top_type)); - if(ARR_LEN(path->path) == 0) { + if (ARR_LEN(path->path) == 0) { return NULL; } else { type_path_entry_t *top = get_type_path_top(path); @@ -3058,14 +3255,14 @@ static void descend_into_subtype(type_path_t *path) size_t len; - if(is_type_compound(top_type)) { + if (is_type_compound(top_type)) { declaration_t *declaration = top_type->compound.declaration; declaration_t *entry = declaration->scope.declarations; top->compound_entry = entry; top->index = 0; len = get_compound_size(&top_type->compound); - if(entry != NULL) + if (entry != NULL) path->top_type = entry->type; } else { assert(is_type_array(top_type)); @@ -3075,13 +3272,13 @@ static void descend_into_subtype(type_path_t *path) path->top_type = top_type->array.element_type; len = top_type->array.size; } - if(initializer == NULL + if (initializer == NULL || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) { initializer = create_initializer_compound(len); /* we have to set the entry at the 2nd latest path entry... */ size_t path_len = ARR_LEN(path->path); assert(path_len >= 1); - if(path_len > 1) { + if (path_len > 1) { type_path_entry_t *entry = & path->path[path_len-2]; ir_initializer_t *tinitializer = entry->initializer; set_initializer_compound_value(tinitializer, entry->index, @@ -3111,7 +3308,7 @@ static void walk_designator(type_path_t *path, const designator_t *designator) type_t *orig_type = top->type; type_t *type = skip_typeref(orig_type); - if(designator->symbol != NULL) { + if (designator->symbol != NULL) { assert(is_type_compound(type)); size_t index = 0; symbol_t *symbol = designator->symbol; @@ -3119,7 +3316,7 @@ static void walk_designator(type_path_t *path, const designator_t *designator) declaration_t *declaration = type->compound.declaration; declaration_t *iter = declaration->scope.declarations; for( ; iter != NULL; iter = iter->next, ++index) { - if(iter->symbol == symbol) { + if (iter->symbol == symbol) { break; } } @@ -3138,7 +3335,7 @@ static void walk_designator(type_path_t *path, const designator_t *designator) long index = fold_constant(array_index); assert(index >= 0); #ifndef NDEBUG - if(type->array.size_constant == 1) { + if (type->array.size_constant == 1) { long array_size = type->array.size; assert(index < array_size); } @@ -3150,7 +3347,7 @@ static void walk_designator(type_path_t *path, const designator_t *designator) } path->top_type = orig_type; - if(designator->next != NULL) { + if (designator->next != NULL) { descend_into_subtype(path); } } @@ -3160,7 +3357,7 @@ static void walk_designator(type_path_t *path, const designator_t *designator) static void advance_current_object(type_path_t *path) { - if(path->invalid) { + if (path->invalid) { /* TODO: handle this... */ panic("invalid initializer in ast2firm (excessive elements)"); return; @@ -3169,15 +3366,15 @@ static void advance_current_object(type_path_t *path) type_path_entry_t *top = get_type_path_top(path); type_t *type = skip_typeref(top->type); - if(is_type_union(type)) { + if (is_type_union(type)) { top->compound_entry = NULL; - } else if(is_type_struct(type)) { + } else if (is_type_struct(type)) { declaration_t *entry = top->compound_entry; top->index++; entry = entry->next; top->compound_entry = entry; - if(entry != NULL) { + if (entry != NULL) { path->top_type = entry->type; return; } @@ -3185,7 +3382,7 @@ static void advance_current_object(type_path_t *path) assert(is_type_array(type)); top->index++; - if(!type->array.size_constant || top->index < type->array.size) { + if (!type->array.size_constant || top->index < type->array.size) { return; } } @@ -3194,7 +3391,7 @@ static void advance_current_object(type_path_t *path) * can ascend in the type hierarchy and continue with another subobject */ size_t len = ARR_LEN(path->path); - if(len > 1) { + if (len > 1) { ascend_from_subtype(path); advance_current_object(path); } else { @@ -3209,6 +3406,9 @@ static ir_initializer_t *create_ir_initializer( static ir_initializer_t *create_ir_initializer_value( const initializer_value_t *initializer) { + if (is_type_compound(initializer->value->base.type)) { + panic("initializer creation for compounds not implemented yet"); + } ir_node *value = expression_to_firm(initializer->value); return create_initializer_const(value); } @@ -3226,19 +3426,19 @@ static ir_initializer_t *create_ir_initializer_list( for(size_t i = 0; i < initializer->len; ++i) { const initializer_t *sub_initializer = initializer->initializers[i]; - if(sub_initializer->kind == INITIALIZER_DESIGNATOR) { + if (sub_initializer->kind == INITIALIZER_DESIGNATOR) { walk_designator(&path, sub_initializer->designator.designator); continue; } - if(sub_initializer->kind == INITIALIZER_VALUE) { + if (sub_initializer->kind == INITIALIZER_VALUE) { /* we might have to descend into types until we're at a scalar * type */ while(true) { type_t *orig_top_type = path.top_type; type_t *top_type = skip_typeref(orig_top_type); - if(is_type_scalar(top_type)) + if (is_type_scalar(top_type)) break; descend_into_subtype(&path); } @@ -3275,14 +3475,14 @@ static ir_initializer_t *create_ir_initializer_string( ir_initializer_t *irinitializer = create_initializer_compound(len); const char *string = initializer->string.begin; - ir_mode *mode = get_type_mode(ir_type_const_char); + ir_mode *mode = get_ir_mode(type->array.element_type); for(size_t i = 0; i < len; ++i) { char c = 0; - if(i < string_len) + if (i < string_len) c = string[i]; - tarval *tv = new_tarval_from_long(string[i], mode); + 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); @@ -3304,10 +3504,10 @@ static ir_initializer_t *create_ir_initializer_wide_string( for(size_t i = 0; i < len; ++i) { wchar_rep_t c = 0; - if(i < string_len) { + if (i < string_len) { c = string[i]; } - tarval *tv = new_tarval_from_long(string[i], mode); + 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); @@ -3339,14 +3539,10 @@ static ir_initializer_t *create_ir_initializer( panic("unknown initializer"); } -static void create_dynamic_initializer_sub(ir_initializer_t *initializer, - ir_type *type, dbg_info *dbgi, ir_node *base_addr) +static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi, + ir_node *base_addr) { - switch(get_initializer_kind(initializer)) { - case IR_INITIALIZER_NULL: { - /* TODO: implement this for compound types... */ - assert(type != NULL); - + if (is_atomic_type(type)) { ir_mode *mode = get_type_mode(type); tarval *zero = get_mode_null(mode); ir_node *cnst = new_d_Const(dbgi, mode, zero); @@ -3356,6 +3552,45 @@ static void create_dynamic_initializer_sub(ir_initializer_t *initializer, ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst); ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M); set_store(proj_m); + } else { + assert(is_compound_type(type)); + + int n_members; + if (is_Array_type(type)) { + assert(has_array_upper_bound(type, 0)); + n_members = get_array_upper_bound_int(type, 0); + } else { + n_members = get_compound_n_members(type); + } + + for(int i = 0; i < n_members; ++i) { + ir_node *addr; + ir_type *irtype; + if (is_Array_type(type)) { + ir_entity *entity = get_array_element_entity(type); + tarval *index_tv = new_tarval_from_long(i, mode_uint); + ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv); + ir_node *in[1] = { cnst }; + irtype = get_array_element_type(type); + addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity); + } else { + ir_entity *member = get_compound_member(type, i); + + irtype = get_entity_type(member); + addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member); + } + + create_dynamic_null_initializer(irtype, dbgi, addr); + } + } +} + +static void create_dynamic_initializer_sub(ir_initializer_t *initializer, + ir_type *type, dbg_info *dbgi, ir_node *base_addr) +{ + switch(get_initializer_kind(initializer)) { + case IR_INITIALIZER_NULL: { + create_dynamic_null_initializer(type, dbgi, base_addr); return; } case IR_INITIALIZER_CONST: { @@ -3386,21 +3621,21 @@ static void create_dynamic_initializer_sub(ir_initializer_t *initializer, case IR_INITIALIZER_COMPOUND: { assert(is_compound_type(type)); int n_members; - if(is_Array_type(type)) { + if (is_Array_type(type)) { assert(has_array_upper_bound(type, 0)); n_members = get_array_upper_bound_int(type, 0); } else { n_members = get_compound_n_members(type); } - if(get_initializer_compound_n_entries(initializer) + if (get_initializer_compound_n_entries(initializer) != (unsigned) n_members) panic("initializer doesn't match compound type"); for(int i = 0; i < n_members; ++i) { ir_node *addr; ir_type *irtype; - if(is_Array_type(type)) { + if (is_Array_type(type)) { ir_entity *entity = get_array_element_entity(type); tarval *index_tv = new_tarval_from_long(i, mode_uint); ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv); @@ -3444,7 +3679,7 @@ static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi, ir_node *frame = get_irg_frame(current_ir_graph); ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity); - if(initializer->kind == INITIALIZER_VALUE) { + if (initializer->kind == INITIALIZER_VALUE) { initializer_value_t *initializer_value = &initializer->value; ir_node *value = expression_to_firm(initializer_value->value); @@ -3453,7 +3688,7 @@ static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi, return; } - if(!is_constant_initializer(initializer)) { + if (!is_constant_initializer(initializer)) { ir_initializer_t *irinitializer = create_ir_initializer(initializer, type); @@ -3471,7 +3706,7 @@ static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi, current_ir_graph = old_current_ir_graph; /* create a "template" entity which is copied to the entity on the stack */ - ident *const id = unique_ident("initializer"); + ident *const id = id_unique("initializer.%u"); ir_type *const irtype = get_ir_type(type); ir_type *const global_type = get_glob_type(); ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi); @@ -3502,29 +3737,38 @@ static void create_initializer_local_variable_entity(declaration_t *declaration) static void create_declaration_initializer(declaration_t *declaration) { initializer_t *initializer = declaration->init.initializer; - if(initializer == NULL) + if (initializer == NULL) return; declaration_kind_t declaration_kind = (declaration_kind_t) declaration->declaration_kind; - if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) { + if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) { create_initializer_local_variable_entity(declaration); return; } - if(initializer->kind == INITIALIZER_VALUE) { + type_t *type = skip_typeref(declaration->type); + + if (initializer->kind == INITIALIZER_VALUE) { initializer_value_t *initializer_value = &initializer->value; + dbg_info *dbgi + = get_dbg_info(&declaration->source_position); ir_node *value = expression_to_firm(initializer_value->value); + value = do_strict_conv(dbgi, value); - if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) { + if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) { set_value(declaration->v.value_number, value); } else { assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE); ir_entity *entity = declaration->v.entity; - set_entity_variability(entity, variability_initialized); + if (type->base.qualifiers & TYPE_QUALIFIER_CONST) { + set_entity_variability(entity, variability_constant); + } else { + set_entity_variability(entity, variability_initialized); + } set_atomic_ent_value(entity, value); } } else { @@ -3533,37 +3777,52 @@ static void create_declaration_initializer(declaration_t *declaration) ir_entity *entity = declaration->v.entity; ir_initializer_t *irinitializer - = create_ir_initializer(initializer, declaration->type); + = create_ir_initializer(initializer, type); + + if (type->base.qualifiers & TYPE_QUALIFIER_CONST) { + set_entity_variability(entity, variability_constant); + } else { + set_entity_variability(entity, variability_initialized); + } + set_entity_initializer(entity, irinitializer); + } +} + +static void create_variable_length_array(declaration_t *declaration) +{ + /* initializers are not allowed for VLAs */ + assert(declaration->init.initializer == NULL); - set_entity_variability(entity, variability_initialized); - set_entity_initializer(entity, irinitializer); - } + declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY; + declaration->v.vla_base = NULL; + + /* TODO: record VLA somewhere so we create the free node when we leave + * it's scope */ } -static void create_variable_length_array(declaration_t *declaration) +static void allocate_variable_length_array(declaration_t *declaration) { + /* initializers are not allowed for VLAs */ + assert(declaration->init.initializer == NULL); + assert(get_cur_block() != NULL); + dbg_info *dbgi = get_dbg_info(&declaration->source_position); type_t *type = declaration->type; - ir_node *mem = get_store(); ir_type *el_type = get_ir_type(type->array.element_type); /* make sure size_node is calculated */ get_type_size(type); ir_node *elems = type->array.size_node; + ir_node *mem = get_store(); ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc); ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M); ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res); set_store(proj_m); - /* initializers are not allowed for VLAs */ - assert(declaration->init.initializer == NULL); - - declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY; + assert(declaration->declaration_kind + == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY); declaration->v.vla_base = addr; - - /* TODO: record VLA somewhere so we create the free node when we leave - * it's scope */ } /** @@ -3577,14 +3836,16 @@ static void create_local_variable(declaration_t *declaration) type_t *type = skip_typeref(declaration->type); /* is it a variable length array? */ - if(is_type_array(type) && !type->array.size_constant) { + if (is_type_array(type) && !type->array.size_constant) { create_variable_length_array(declaration); return; - } else if(is_type_array(type) || is_type_compound(type)) { + } else if (is_type_array(type) || is_type_compound(type)) { + needs_entity = true; + } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) { needs_entity = true; } - if(needs_entity) { + if (needs_entity) { ir_type *frame_type = get_irg_frame_type(current_ir_graph); create_declaration_entity(declaration, DECLARATION_KIND_LOCAL_VARIABLE_ENTITY, @@ -3595,8 +3856,6 @@ static void create_local_variable(declaration_t *declaration) set_irg_loc_description(current_ir_graph, next_value_number_function, declaration); ++next_value_number_function; } - - create_declaration_initializer(declaration); } static void create_local_static_variable(declaration_t *declaration) @@ -3605,14 +3864,23 @@ static void create_local_static_variable(declaration_t *declaration) type_t *const type = skip_typeref(declaration->type); ir_type *const global_type = get_glob_type(); - ident *const id = unique_ident(declaration->symbol->string); ir_type *const irtype = get_ir_type(type); dbg_info *const dbgi = get_dbg_info(&declaration->source_position); + + size_t l = strlen(declaration->symbol->string); + char buf[l + sizeof(".%u")]; + snprintf(buf, sizeof(buf), "%s.%%u", declaration->symbol->string); + ident *const id = id_unique(buf); + ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi); - set_entity_ld_ident(entity, id); + + if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) { + set_entity_volatility(entity, volatility_is_volatile); + } declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE; declaration->v.entity = entity; + set_entity_ld_ident(entity, create_ld_ident(entity, declaration)); set_entity_variability(entity, variability_uninitialized); set_entity_visibility(entity, visibility_local); set_entity_allocation(entity, allocation_static); @@ -3630,7 +3898,7 @@ static void create_local_static_variable(declaration_t *declaration) static void return_statement_to_firm(return_statement_t *statement) { - if(get_cur_block() == NULL) + if (get_cur_block() == NULL) return; dbg_info *dbgi = get_dbg_info(&statement->base.source_position); @@ -3639,16 +3907,16 @@ static void return_statement_to_firm(return_statement_t *statement) ir_node *in[1]; int in_len; - if(get_method_n_ress(func_irtype) > 0) { + if (get_method_n_ress(func_irtype) > 0) { ir_type *res_type = get_method_res_type(func_irtype, 0); - if(statement->value != NULL) { + if (statement->value != NULL) { ir_node *node = expression_to_firm(statement->value); node = do_strict_conv(dbgi, node); in[0] = node; } else { ir_mode *mode; - if(is_compound_type(res_type)) { + if (is_compound_type(res_type)) { mode = mode_P_data; } else { mode = get_type_mode(res_type); @@ -3658,7 +3926,7 @@ static void return_statement_to_firm(return_statement_t *statement) in_len = 1; } else { /* build return_value for its side effects */ - if(statement->value != NULL) { + if (statement->value != NULL) { expression_to_firm(statement->value); } in_len = 0; @@ -3675,7 +3943,7 @@ static void return_statement_to_firm(return_statement_t *statement) static ir_node *expression_statement_to_firm(expression_statement_t *statement) { - if(get_cur_block() == NULL) + if (get_cur_block() == NULL) return NULL; return expression_to_firm(statement->expression); @@ -3683,12 +3951,15 @@ static ir_node *expression_statement_to_firm(expression_statement_t *statement) static ir_node *compound_statement_to_firm(compound_statement_t *compound) { + declaration_t *declaration = compound->scope.declarations; + for( ; declaration != NULL; declaration = declaration->next) { + create_local_declaration(declaration); + } + ir_node *result = NULL; statement_t *statement = compound->statements; for( ; statement != NULL; statement = statement->base.next) { - //context2firm(&statement->scope); - - if(statement->base.next == NULL + if (statement->base.next == NULL && statement->kind == STATEMENT_EXPRESSION) { result = expression_statement_to_firm( &statement->expression); @@ -3741,7 +4012,9 @@ create_var: create_declaration_entity(declaration, DECLARATION_KIND_GLOBAL_VARIABLE, var_type); - set_entity_visibility(declaration->v.entity, vis); + if (!is_type_function(skip_typeref(declaration->type))) { + set_entity_visibility(declaration->v.entity, vis); + } return; @@ -3756,8 +4029,13 @@ create_var: static void create_local_declaration(declaration_t *declaration) { - if(declaration->symbol == NULL) + if (declaration->namespc != NAMESPACE_NORMAL) return; + /* construct type */ + (void) get_ir_type(declaration->type); + if (declaration->symbol == NULL) { + return; + } type_t *type = skip_typeref(declaration->type); @@ -3772,8 +4050,8 @@ static void create_local_declaration(declaration_t *declaration) case STORAGE_CLASS_NONE: case STORAGE_CLASS_AUTO: case STORAGE_CLASS_REGISTER: - if(is_type_function(type)) { - if(declaration->init.statement != NULL) { + if (is_type_function(type)) { + if (declaration->init.statement != NULL) { panic("nested functions not supported yet"); } else { get_function_entity(declaration); @@ -3783,23 +4061,59 @@ static void create_local_declaration(declaration_t *declaration) } return; case STORAGE_CLASS_ENUM_ENTRY: + /* should already be handled */ + assert(declaration->declaration_kind == DECLARATION_KIND_ENUM_ENTRY); + return; case STORAGE_CLASS_TYPEDEF: + declaration->declaration_kind = DECLARATION_KIND_TYPE; + return; case STORAGE_CLASS_THREAD: case STORAGE_CLASS_THREAD_EXTERN: case STORAGE_CLASS_THREAD_STATIC: - return; + break; } panic("invalid storage class found"); } +static void initialize_local_declaration(declaration_t *declaration) +{ + if (declaration->symbol == NULL || declaration->namespc != NAMESPACE_NORMAL) + return; + + switch ((declaration_kind_t) declaration->declaration_kind) { + case DECLARATION_KIND_LOCAL_VARIABLE: + case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: + create_declaration_initializer(declaration); + return; + + case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY: + allocate_variable_length_array(declaration); + return; + + case DECLARATION_KIND_LABEL_BLOCK: + case DECLARATION_KIND_COMPOUND_MEMBER: + case DECLARATION_KIND_GLOBAL_VARIABLE: + case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE: + case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE: + case DECLARATION_KIND_FUNCTION: + case DECLARATION_KIND_TYPE: + case DECLARATION_KIND_ENUM_ENTRY: + return; + + case DECLARATION_KIND_UNKNOWN: + panic("can't initialize unknwon declaration"); + } + panic("invalid declaration kind"); +} + static void declaration_statement_to_firm(declaration_statement_t *statement) { declaration_t *declaration = statement->declarations_begin; declaration_t *end = statement->declarations_end->next; for( ; declaration != end; declaration = declaration->next) { - if(declaration->namespc != NAMESPACE_NORMAL) + if (declaration->namespc != NAMESPACE_NORMAL) continue; - create_local_declaration(declaration); + initialize_local_declaration(declaration); } } @@ -3807,47 +4121,58 @@ static void if_statement_to_firm(if_statement_t *statement) { ir_node *cur_block = get_cur_block(); - ir_node *fallthrough_block = new_immBlock(); + ir_node *fallthrough_block = NULL; /* the true (blocks) */ - ir_node *true_block; + ir_node *true_block = NULL; if (statement->true_statement != NULL) { true_block = new_immBlock(); statement_to_firm(statement->true_statement); - if(get_cur_block() != NULL) { + if (get_cur_block() != NULL) { ir_node *jmp = new_Jmp(); + if (fallthrough_block == NULL) + fallthrough_block = new_immBlock(); add_immBlock_pred(fallthrough_block, jmp); } - } else { - true_block = fallthrough_block; } /* the false (blocks) */ - ir_node *false_block; - if(statement->false_statement != NULL) { + ir_node *false_block = NULL; + if (statement->false_statement != NULL) { false_block = new_immBlock(); statement_to_firm(statement->false_statement); - if(get_cur_block() != NULL) { + if (get_cur_block() != NULL) { ir_node *jmp = new_Jmp(); + if (fallthrough_block == NULL) + fallthrough_block = new_immBlock(); add_immBlock_pred(fallthrough_block, jmp); } - } else { - false_block = fallthrough_block; } /* create the condition */ - if(cur_block != NULL) { + 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; + } + set_cur_block(cur_block); create_condition_evaluation(statement->condition, true_block, false_block); } mature_immBlock(true_block); - if(false_block != fallthrough_block) { + if (false_block != fallthrough_block) { mature_immBlock(false_block); } - mature_immBlock(fallthrough_block); + if (fallthrough_block != NULL) { + mature_immBlock(fallthrough_block); + } set_cur_block(fallthrough_block); } @@ -3855,50 +4180,60 @@ static void if_statement_to_firm(if_statement_t *statement) static void while_statement_to_firm(while_statement_t *statement) { ir_node *jmp = NULL; - if(get_cur_block() != NULL) { + if (get_cur_block() != NULL) { jmp = new_Jmp(); } /* create the header block */ ir_node *header_block = new_immBlock(); - if(jmp != NULL) { + if (jmp != NULL) { add_immBlock_pred(header_block, jmp); } - /* the false block */ - ir_node *false_block = new_immBlock(); - /* the loop body */ - ir_node *body_block; - if (statement->body != NULL) { - ir_node *old_continue_label = continue_label; - ir_node *old_break_label = break_label; - continue_label = header_block; - break_label = false_block; + ir_node *old_continue_label = continue_label; + ir_node *old_break_label = break_label; + continue_label = header_block; + break_label = NULL; - body_block = new_immBlock(); - statement_to_firm(statement->body); + ir_node *body_block = new_immBlock(); + statement_to_firm(statement->body); + ir_node *false_block = break_label; - assert(continue_label == header_block); - assert(break_label == false_block); - continue_label = old_continue_label; - break_label = old_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); - } - } else { - body_block = header_block; + if (get_cur_block() != NULL) { + jmp = new_Jmp(); + add_immBlock_pred(header_block, jmp); } - /* create the condition */ - set_cur_block(header_block); + /* shortcut for while(true) */ + if (is_constant_expression(statement->condition) + && fold_constant(statement->condition) != 0) { + set_cur_block(header_block); + ir_node *header_jmp = new_Jmp(); + add_immBlock_pred(body_block, header_jmp); + + keep_alive(body_block); + } else { + if (false_block == NULL) { + false_block = new_immBlock(); + } + + /* create the condition */ + set_cur_block(header_block); + + create_condition_evaluation(statement->condition, body_block, + false_block); + } - create_condition_evaluation(statement->condition, body_block, false_block); mature_immBlock(body_block); - mature_immBlock(false_block); mature_immBlock(header_block); + if (false_block != NULL) { + mature_immBlock(false_block); + } set_cur_block(false_block); } @@ -3906,54 +4241,50 @@ static void while_statement_to_firm(while_statement_t *statement) static void do_while_statement_to_firm(do_while_statement_t *statement) { ir_node *jmp = NULL; - if(get_cur_block() != NULL) { + if (get_cur_block() != NULL) { jmp = new_Jmp(); } /* create the header block */ ir_node *header_block = new_immBlock(); - /* the false block */ - ir_node *false_block = new_immBlock(); - /* the loop body */ ir_node *body_block = new_immBlock(); - if(jmp != NULL) { + if (jmp != NULL) { add_immBlock_pred(body_block, jmp); } - if (statement->body != NULL) { - ir_node *old_continue_label = continue_label; - ir_node *old_break_label = break_label; - continue_label = header_block; - break_label = false_block; + ir_node *old_continue_label = continue_label; + ir_node *old_break_label = break_label; + continue_label = header_block; + break_label = NULL; - statement_to_firm(statement->body); + statement_to_firm(statement->body); + ir_node *false_block = break_label; - assert(continue_label == header_block); - assert(break_label == false_block); - continue_label = old_continue_label; - break_label = old_break_label; + assert(continue_label == header_block); + continue_label = old_continue_label; + break_label = old_break_label; - if (get_cur_block() == NULL) { - mature_immBlock(header_block); - mature_immBlock(body_block); - mature_immBlock(false_block); - return; - } + if (get_cur_block() != NULL) { + ir_node *body_jmp = new_Jmp(); + add_immBlock_pred(header_block, body_jmp); + mature_immBlock(header_block); } - 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(); + } /* create the condition */ set_cur_block(header_block); create_condition_evaluation(statement->condition, body_block, false_block); mature_immBlock(body_block); - mature_immBlock(false_block); mature_immBlock(header_block); + if (false_block != NULL) { + mature_immBlock(false_block); + } set_cur_block(false_block); } @@ -3961,17 +4292,22 @@ 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 */ + declaration_t *declaration = statement->scope.declarations; + for( ; declaration != NULL; declaration = declaration->next) { + create_local_declaration(declaration); + } + declaration = statement->scope.declarations; + for( ; declaration != NULL; declaration = declaration->next) { + initialize_local_declaration(declaration); + } + if (get_cur_block() != NULL) { - if(statement->initialisation != NULL) { + if (statement->initialisation != NULL) { expression_to_firm(statement->initialisation); } - /* create declarations */ - declaration_t *declaration = statement->scope.declarations; - for( ; declaration != NULL; declaration = declaration->next) { - create_local_declaration(declaration); - } - jmp = new_Jmp(); } @@ -4040,7 +4376,7 @@ static void for_statement_to_firm(for_statement_t *statement) static void create_jump_statement(const statement_t *statement, ir_node *target_block) { - if(get_cur_block() == NULL) + if (get_cur_block() == NULL) return; dbg_info *dbgi = get_dbg_info(&statement->base.source_position); @@ -4050,46 +4386,57 @@ static void create_jump_statement(const statement_t *statement, set_cur_block(NULL); } +static ir_node *get_break_label(void) +{ + if (break_label == NULL) { + ir_node *cur_block = get_cur_block(); + break_label = new_immBlock(); + set_cur_block(cur_block); + } + return break_label; +} + static void switch_statement_to_firm(const switch_statement_t *statement) { dbg_info *dbgi = get_dbg_info(&statement->base.source_position); ir_node *expression = expression_to_firm(statement->expression); ir_node *cond = new_d_Cond(dbgi, expression); - ir_node *break_block = new_immBlock(); set_cur_block(NULL); ir_node *const old_switch_cond = current_switch_cond; ir_node *const old_break_label = break_label; const bool old_saw_default_label = saw_default_label; + saw_default_label = false; current_switch_cond = cond; - break_label = break_block; + break_label = NULL; if (statement->body != NULL) { statement_to_firm(statement->body); } - if(get_cur_block() != NULL) { + if (get_cur_block() != NULL) { ir_node *jmp = new_Jmp(); - add_immBlock_pred(break_block, jmp); + add_immBlock_pred(get_break_label(), jmp); } if (!saw_default_label) { set_cur_block(get_nodes_block(cond)); ir_node *const proj = new_d_defaultProj(dbgi, cond, MAGIC_DEFAULT_PN_NUMBER); - add_immBlock_pred(break_block, proj); + add_immBlock_pred(get_break_label(), proj); + } + + if (break_label != NULL) { + mature_immBlock(break_label); } + set_cur_block(break_label); assert(current_switch_cond == cond); - assert(break_label == break_block); current_switch_cond = old_switch_cond; break_label = old_break_label; saw_default_label = old_saw_default_label; - - mature_immBlock(break_block); - set_cur_block(break_block); } static void case_label_to_firm(const case_label_statement_t *statement) @@ -4105,7 +4452,7 @@ static void case_label_to_firm(const case_label_statement_t *statement) ir_node *block = new_immBlock(); set_cur_block(old_block); - if(statement->expression != NULL) { + if (statement->expression != NULL) { long start_pn = fold_constant(statement->expression); long end_pn = start_pn; if (statement->end_range != NULL) { @@ -4114,7 +4461,7 @@ static void case_label_to_firm(const case_label_statement_t *statement) assert(start_pn <= end_pn); /* create jumps for all cases in the given range */ for (long pn = start_pn; pn <= end_pn; ++pn) { - if(pn == MAGIC_DEFAULT_PN_NUMBER) { + if (pn == MAGIC_DEFAULT_PN_NUMBER) { /* oops someone detected our cheating... */ panic("magic default pn used"); } @@ -4135,7 +4482,7 @@ static void case_label_to_firm(const case_label_statement_t *statement) mature_immBlock(block); set_cur_block(block); - if(statement->statement != NULL) { + if (statement->statement != NULL) { statement_to_firm(statement->statement); } } @@ -4144,7 +4491,7 @@ static ir_node *get_label_block(declaration_t *label) { assert(label->namespc == NAMESPACE_LABEL); - if(label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) { + if (label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) { return label->v.block; } assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN); @@ -4165,7 +4512,7 @@ static void label_to_firm(const label_statement_t *statement) { ir_node *block = get_label_block(statement->label); - if(get_cur_block() != NULL) { + if (get_cur_block() != NULL) { ir_node *jmp = new_Jmp(); add_immBlock_pred(block, jmp); } @@ -4173,14 +4520,14 @@ static void label_to_firm(const label_statement_t *statement) set_cur_block(block); keep_alive(block); - if(statement->statement != NULL) { + if (statement->statement != NULL) { statement_to_firm(statement->statement); } } static void goto_to_firm(const goto_statement_t *statement) { - if(get_cur_block() == NULL) + if (get_cur_block() == NULL) return; ir_node *block = get_label_block(statement->label); @@ -4190,107 +4537,278 @@ static void goto_to_firm(const goto_statement_t *statement) set_cur_block(NULL); } -typedef enum modifier_t { - ASM_MODIFIER_WRITE_ONLY = 1 << 0, - ASM_MODIFIER_READ_WRITE = 1 << 1, - ASM_MODIFIER_COMMUTATIVE = 1 << 2, - ASM_MODIFIER_EARLYCLOBBER = 1 << 3, -} modifier_t; - static void asm_statement_to_firm(const asm_statement_t *statement) { - (void) statement; - fprintf(stderr, "WARNING asm not implemented yet!\n"); -#if 0 bool needs_memory = false; + if (statement->is_volatile) { + needs_memory = true; + } + size_t n_clobbers = 0; asm_clobber_t *clobber = statement->clobbers; for( ; clobber != NULL; clobber = clobber->next) { - if(strcmp(clobber->clobber, "memory") == 0) { + const char *clobber_str = clobber->clobber.begin; + + if (!be_is_valid_clobber(clobber_str)) { + errorf(&statement->base.source_position, + "invalid clobber '%s' specified", clobber->clobber); + continue; + } + + if (strcmp(clobber_str, "memory") == 0) { needs_memory = true; continue; } - ident *id = new_id_from_str(clobber->clobber); + ident *id = new_id_from_str(clobber_str); obstack_ptr_grow(&asm_obst, id); ++n_clobbers; } assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*)); ident **clobbers = NULL; - if(n_clobbers > 0) { + if (n_clobbers > 0) { clobbers = obstack_finish(&asm_obst); } - /* find and count input and output constraints */ - asm_constraint_t *constraint = statement->inputs; - for( ; constraint != NULL; constraint = constraint->next) { - int modifiers = 0; - bool supports_memop = false; - for(const char *c = constraint->constraints; *c != 0; ++c) { - /* TODO: improve error messages */ - switch(*c) { - case '?': - case '!': - panic("multiple alternative assembler constraints not " - "supported"); - case 'm': - case 'o': - case 'V': - case '<': - case '>': - case 'X': - supports_memop = true; - obstack_1grow(&asm_obst, *c); - break; - case '=': - if(modifiers & ASM_MODIFIER_READ_WRITE) - panic("inconsistent register constraints"); - modifiers |= ASM_MODIFIER_WRITE_ONLY; - break; - case '+': - if(modifiers & ASM_MODIFIER_WRITE_ONLY) - panic("inconsistent register constraints"); - modifiers |= ASM_MODIFIER_READ_WRITE; - break; - case '&': - modifiers |= ASM_MODIFIER_EARLYCLOBBER; - panic("early clobber assembler constraint not supported yet"); - break; - case '%': - modifiers |= ASM_MODIFIER_COMMUTATIVE; - panic("commutative assembler constraint not supported yet"); - break; - case '#': - /* skip register preferences stuff... */ - while(*c != 0 && *c != ',') - ++c; - break; - case '*': - /* skip register preferences stuff... */ - ++c; - break; - default: - obstack_1grow(&asm_obst, *c); - break; + size_t n_inputs = 0; + asm_argument_t *argument = statement->inputs; + for ( ; argument != NULL; argument = argument->next) + n_inputs++; + size_t n_outputs = 0; + argument = statement->outputs; + for ( ; argument != NULL; argument = argument->next) + n_outputs++; + + unsigned next_pos = 0; + + ir_node *ins[n_inputs + n_outputs + 1]; + size_t in_size = 0; + + ir_asm_constraint *tmp_in_constraints + = xmalloc(n_outputs * sizeof(tmp_in_constraints[0])); + + const expression_t *out_exprs[n_outputs]; + ir_node *out_addrs[n_outputs]; + size_t out_size = 0; + + argument = statement->outputs; + for ( ; argument != NULL; argument = argument->next) { + const char *constraints = argument->constraints.begin; + asm_constraint_flags_t asm_flags + = be_parse_asm_constraints(constraints); + + if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) { + errorf(&statement->base.source_position, + "some constraints in '%s' are not supported", constraints); + continue; + } + if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) { + errorf(&statement->base.source_position, + "some constraints in '%s' are invalid", constraints); + continue; + } + if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) { + errorf(&statement->base.source_position, + "no write flag specified for output constraints '%s'", + constraints); + continue; + } + + unsigned pos = next_pos++; + if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE) + || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) { + expression_t *expr = argument->expression; + ir_node *addr = expression_to_addr(expr); + /* in+output, construct an artifical same_as constraint on the + * input */ + if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) { + char buf[64]; + ir_node *value = get_value_from_lvalue(expr, addr); + + snprintf(buf, sizeof(buf), "%d", pos); + + ir_asm_constraint constraint; + constraint.pos = pos; + constraint.constraint = new_id_from_str(buf); + constraint.mode = get_ir_mode(expr->base.type); + tmp_in_constraints[in_size] = constraint; + ins[in_size] = value; + + ++in_size; } + + out_exprs[out_size] = expr; + out_addrs[out_size] = addr; + ++out_size; + } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) { + /* pure memory ops need no input (but we have to make sure we + * attach to the memory) */ + assert(! (asm_flags & + (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE + | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER))); + needs_memory = true; + + /* we need to attach the address to the inputs */ + expression_t *expr = argument->expression; + + ir_asm_constraint constraint; + constraint.pos = pos; + constraint.constraint = new_id_from_str(constraints); + constraint.mode = NULL; + tmp_in_constraints[in_size] = constraint; + + ins[in_size] = expression_to_addr(expr); + ++in_size; + continue; + } else { + errorf(&statement->base.source_position, + "only modifiers but no place set in constraints '%s'", + constraints); + continue; } - obstack_1grow(&asm_obst, '\0'); - const char *constraint_string = obstack_finish(&asm_obst); - needs_memory |= supports_memop; - if(supports_memop) { + ir_asm_constraint constraint; + constraint.pos = pos; + constraint.constraint = new_id_from_str(constraints); + constraint.mode = get_ir_mode(argument->expression->base.type); + + obstack_grow(&asm_obst, &constraint, sizeof(constraint)); + } + assert(obstack_object_size(&asm_obst) + == out_size * sizeof(ir_asm_constraint)); + ir_asm_constraint *output_constraints = obstack_finish(&asm_obst); + + + obstack_grow(&asm_obst, tmp_in_constraints, + in_size * sizeof(tmp_in_constraints[0])); + free(tmp_in_constraints); + /* find and count input and output arguments */ + argument = statement->inputs; + for( ; argument != NULL; argument = argument->next) { + const char *constraints = argument->constraints.begin; + asm_constraint_flags_t asm_flags + = be_parse_asm_constraints(constraints); + + if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) { + errorf(&statement->base.source_position, + "some constraints in '%s' are not supported", constraints); + continue; + } + if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) { + errorf(&statement->base.source_position, + "some constraints in '%s' are invalid", constraints); + continue; + } + if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) { + errorf(&statement->base.source_position, + "write flag specified for input constraints '%s'", + constraints); + continue; + } + ir_node *input; + if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE) + || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) { + /* we can treat this as "normal" input */ + input = expression_to_firm(argument->expression); + } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) { + /* pure memory ops need no input (but we have to make sure we + * attach to the memory) */ + assert(! (asm_flags & + (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE + | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER))); + needs_memory = true; + input = expression_to_addr(argument->expression); + } else { + errorf(&statement->base.source_position, + "only modifiers but no place set in constraints '%s'", + constraints); + continue; } + + ir_asm_constraint constraint; + constraint.pos = next_pos++; + constraint.constraint = new_id_from_str(constraints); + constraint.mode = get_irn_mode(input); + + obstack_grow(&asm_obst, &constraint, sizeof(constraint)); + ins[in_size++] = input; } -#endif + + if (needs_memory) { + ir_asm_constraint constraint; + constraint.pos = next_pos++; + constraint.constraint = new_id_from_str(""); + constraint.mode = mode_M; + + obstack_grow(&asm_obst, &constraint, sizeof(constraint)); + ins[in_size++] = get_store(); + } + + assert(obstack_object_size(&asm_obst) + == in_size * sizeof(ir_asm_constraint)); + ir_asm_constraint *input_constraints = obstack_finish(&asm_obst); + + /* create asm node */ + dbg_info *dbgi = get_dbg_info(&statement->base.source_position); + + ident *asm_text = new_id_from_str(statement->asm_text.begin); + + ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints, + out_size, output_constraints, + n_clobbers, clobbers, asm_text); + + if (statement->is_volatile) { + set_irn_pinned(node, op_pin_state_pinned); + } else { + set_irn_pinned(node, op_pin_state_floats); + } + + /* create output projs & connect them */ + if (needs_memory) { + ir_node *projm = new_Proj(node, mode_M, out_size+1); + set_store(projm); + } + + size_t i; + for (i = 0; i < out_size; ++i) { + const expression_t *out_expr = out_exprs[i]; + long pn = i; + ir_mode *mode = get_ir_mode(out_expr->base.type); + ir_node *proj = new_Proj(node, mode, pn); + ir_node *addr = out_addrs[i]; + + set_value_for_expression_addr(out_expr, proj, addr); + } +} + +static void ms_try_statement_to_firm(ms_try_statement_t *statement) { + statement_to_firm(statement->try_statement); + warningf(&statement->base.source_position, "structured exception handling ignored"); +} + +static void leave_statement_to_firm(leave_statement_t *statement) { + errorf(&statement->base.source_position, "__leave not supported yet"); } +/** + * Transform a statement. + */ static void statement_to_firm(statement_t *statement) { +#ifndef NDEBUG + assert(!statement->base.transformed); + statement->base.transformed = true; +#endif + switch(statement->kind) { case STATEMENT_INVALID: panic("invalid statement found"); + return; + case STATEMENT_EMPTY: + /* nothing */ + return; case STATEMENT_COMPOUND: compound_statement_to_firm(&statement->compound); return; @@ -4313,7 +4831,7 @@ static void statement_to_firm(statement_t *statement) declaration_statement_to_firm(&statement->declaration); return; case STATEMENT_BREAK: - create_jump_statement(statement, break_label); + create_jump_statement(statement, get_break_label()); return; case STATEMENT_CONTINUE: create_jump_statement(statement, continue_label); @@ -4336,6 +4854,12 @@ static void statement_to_firm(statement_t *statement) case STATEMENT_ASM: asm_statement_to_firm(&statement->asms); return; + case STATEMENT_MS_TRY: + ms_try_statement_to_firm(&statement->ms_try); + return; + case STATEMENT_LEAVE: + leave_statement_to_firm(&statement->leave); + return; } panic("Statement not implemented\n"); } @@ -4347,14 +4871,15 @@ static int count_local_declarations(const declaration_t * decl, { int count = 0; for (; decl != end; decl = decl->next) { - if(decl->namespc != NAMESPACE_NORMAL) + if (decl->namespc != NAMESPACE_NORMAL) continue; - const type_t *type = skip_typeref(decl->type); + type_t *type = skip_typeref(decl->type); + if (!decl->address_taken && is_type_scalar(type)) ++count; const initializer_t *initializer = decl->init.initializer; /* FIXME: should walk initializer hierarchies... */ - if(initializer != NULL && initializer->kind == INITIALIZER_VALUE) { + if (initializer != NULL && initializer->kind == INITIALIZER_VALUE) { count += count_decls_in_expression(initializer->value.value); } } @@ -4364,7 +4889,7 @@ static int count_local_declarations(const declaration_t * decl, static int count_decls_in_expression(const expression_t *expression) { int count = 0; - if(expression == NULL) + if (expression == NULL) return 0; switch((expression_kind_t) expression->base.kind) { @@ -4438,8 +4963,7 @@ static int count_decls_in_expression(const expression_t *expression) { case EXPR_WIDE_CHARACTER_CONSTANT: case EXPR_STRING_LITERAL: case EXPR_WIDE_STRING_LITERAL: - case EXPR_FUNCTION: - case EXPR_PRETTY_FUNCTION: + case EXPR_FUNCNAME: case EXPR_BUILTIN_SYMBOL: case EXPR_VA_START: case EXPR_VA_ARG: @@ -4458,6 +4982,9 @@ static int count_decls_in_stmts(const statement_t *stmt) int count = 0; for (; stmt != NULL; stmt = stmt->base.next) { switch (stmt->kind) { + case STATEMENT_EMPTY: + break; + case STATEMENT_DECLARATION: { const declaration_statement_t *const decl_stmt = &stmt->declaration; count += count_local_declarations(decl_stmt->declarations_begin, @@ -4489,7 +5016,7 @@ static int count_decls_in_stmts(const statement_t *stmt) case STATEMENT_LABEL: { const label_statement_t *const label_stmt = &stmt->label; - if(label_stmt->statement != NULL) { + if (label_stmt->statement != NULL) { count += count_decls_in_stmts(label_stmt->statement); } break; @@ -4522,7 +5049,7 @@ static int count_decls_in_stmts(const statement_t *stmt) case STATEMENT_CASE_LABEL: { const case_label_statement_t *label = &stmt->case_label; count += count_decls_in_expression(label->expression); - if(label->statement != NULL) { + if (label->statement != NULL) { count += count_decls_in_stmts(label->statement); } break; @@ -4540,6 +5067,7 @@ static int count_decls_in_stmts(const statement_t *stmt) } case STATEMENT_GOTO: + case STATEMENT_LEAVE: case STATEMENT_INVALID: break; @@ -4548,6 +5076,15 @@ static int count_decls_in_stmts(const statement_t *stmt) count += count_decls_in_expression(ret_stmt->value); break; } + + case STATEMENT_MS_TRY: { + const ms_try_statement_t *const try_stmt = &stmt->ms_try; + count += count_decls_in_stmts(try_stmt->try_statement); + if (try_stmt->except_expression != NULL) + count += count_decls_in_expression(try_stmt->except_expression); + count += count_decls_in_stmts(try_stmt->final_statement); + break; + } } } return count; @@ -4581,11 +5118,11 @@ static void initialize_function_parameters(declaration_t *declaration) bool needs_entity = parameter->address_taken; assert(!is_type_array(type)); - if(is_type_compound(type)) { + if (is_type_compound(type)) { needs_entity = true; } - if(needs_entity) { + if (needs_entity) { ir_entity *entity = get_method_value_param_ent(function_irtype, n); ident *id = new_id_from_str(parameter->symbol->string); set_entity_ident(entity, id); @@ -4596,16 +5133,22 @@ static void initialize_function_parameters(declaration_t *declaration) continue; } - ir_mode *mode = get_ir_mode(parameter->type); - long pn = n; - ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn); + ir_type *param_irtype = get_method_param_type(function_irtype, n); + ir_mode *param_mode = get_type_mode(param_irtype); + + long pn = n; + ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn); + + ir_mode *mode = get_ir_mode(type); + value = create_conv(NULL, value, mode); + value = do_strict_conv(NULL, value); parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE; parameter->v.value_number = next_value_number_function; set_irg_loc_description(current_ir_graph, next_value_number_function, parameter); ++next_value_number_function; - set_value(parameter->v.value_number, proj); + set_value(parameter->v.value_number, value); } } @@ -4644,27 +5187,63 @@ static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_mod } } +static void add_function_pointer(ir_type *segment, ir_entity *method, + const char *unique_template) +{ + ir_type *method_type = get_entity_type(method); + ident *id = id_unique(unique_template); + ir_type *ptr_type = new_type_pointer(id, method_type, mode_P_code); + + 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); + + set_entity_compiler_generated(ptr, 1); + set_entity_variability(ptr, variability_constant); + set_atomic_ent_value(ptr, val); +} + +/** + * Create code for a function. + */ static void create_function(declaration_t *declaration) { ir_entity *function_entity = get_function_entity(declaration); - if(declaration->init.statement == NULL) + if (declaration->init.statement == NULL) return; + if (declaration->modifiers & DM_CONSTRUCTOR) { + ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS); + add_function_pointer(segment, function_entity, "constructor_ptr.%u"); + } + if (declaration->modifiers & DM_DESTRUCTOR) { + ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS); + add_function_pointer(segment, function_entity, "destructor_ptr.%u"); + } + current_function_decl = declaration; current_function_name = NULL; + current_funcsig = NULL; assert(imature_blocks == NULL); imature_blocks = NEW_ARR_F(ir_node*, 0); int n_local_vars = get_function_n_local_vars(declaration); ir_graph *irg = new_ir_graph(function_entity, n_local_vars); - ir_node *first_block = get_cur_block(); + + set_irg_fp_model(irg, firm_opt.fp_model); + tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0); + set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity)); + + ir_node *first_block = get_cur_block(); /* set inline flags */ if (declaration->is_inline) - set_irg_inline_property(irg, irg_inline_recomended); - handle_decl_modifier_irg(irg, declaration->modifiers); + set_irg_inline_property(irg, irg_inline_recomended); + handle_decl_modifier_irg(irg, declaration->modifiers); next_value_number_function = 0; initialize_function_parameters(declaration); @@ -4674,7 +5253,7 @@ static void create_function(declaration_t *declaration) ir_node *end_block = get_irg_end_block(irg); /* do we have a return statement yet? */ - if(get_cur_block() != NULL) { + if (get_cur_block() != NULL) { type_t *type = skip_typeref(declaration->type); assert(is_type_function(type)); const function_type_t *func_type = &type->function; @@ -4686,7 +5265,7 @@ static void create_function(declaration_t *declaration) ret = new_Return(get_store(), 0, NULL); } else { ir_mode *mode; - if(is_type_scalar(return_type)) { + if (is_type_scalar(return_type)) { mode = get_ir_mode(func_type->return_type); } else { mode = mode_P_data; @@ -4698,6 +5277,11 @@ static void create_function(declaration_t *declaration) in[0] = new_Const(mode, get_mode_null(mode)); } else { in[0] = new_Unknown(mode); + if (warning.return_type) { + warningf(&declaration->source_position, + "missing return statement at end of non-void function '%Y'", + declaration->symbol); + } } ret = new_Return(get_store(), 1, in); } @@ -4725,12 +5309,12 @@ static void create_function(declaration_t *declaration) ir_type *entity_type = get_entity_type(entity); int align = get_type_alignment_bytes(entity_type); - if(align > align_all) + if (align > align_all) align_all = align; int misalign = 0; - if(align > 0) { + if (align > 0) { misalign = offset % align; - if(misalign > 0) { + if (misalign > 0) { offset += align - misalign; } } @@ -4749,16 +5333,16 @@ static void scope_to_firm(scope_t *scope) /* first pass: create declarations */ declaration_t *declaration = scope->declarations; for( ; declaration != NULL; declaration = declaration->next) { - if(declaration->namespc != NAMESPACE_NORMAL) + if (declaration->namespc != NAMESPACE_NORMAL) continue; - if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY + if (declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY || declaration->storage_class == STORAGE_CLASS_TYPEDEF) continue; - if(declaration->symbol == NULL) + if (declaration->symbol == NULL) continue; type_t *type = skip_typeref(declaration->type); - if(is_type_function(type)) { + if (is_type_function(type)) { get_function_entity(declaration); } else { create_global_variable(declaration); @@ -4768,16 +5352,16 @@ static void scope_to_firm(scope_t *scope) /* second pass: create code/initializers */ declaration = scope->declarations; for( ; declaration != NULL; declaration = declaration->next) { - if(declaration->namespc != NAMESPACE_NORMAL) + if (declaration->namespc != NAMESPACE_NORMAL) continue; - if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY + if (declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY || declaration->storage_class == STORAGE_CLASS_TYPEDEF) continue; - if(declaration->symbol == NULL) + if (declaration->symbol == NULL) continue; type_t *type = declaration->type; - if(type->kind == TYPE_FUNCTION) { + if (type->kind == TYPE_FUNCTION) { create_function(declaration); } else { assert(declaration->declaration_kind @@ -4793,16 +5377,41 @@ void init_ast2firm(void) obstack_init(&asm_obst); init_atomic_modes(); + id_underscore = new_id_from_chars("_", 1); + id_imp = new_id_from_chars("__imp_", 6); + + /* OS option must be set to the backend */ + const char *s = "ia32-gasmode=linux"; + switch (firm_opt.os_support) { + case OS_SUPPORT_MINGW: + create_ld_ident = create_ld_ident_win32; + s = "ia32-gasmode=mingw"; + break; + case OS_SUPPORT_LINUX: + create_ld_ident = create_ld_ident_linux_elf; + s = "ia32-gasmode=elf"; + break; + case OS_SUPPORT_MACHO: + create_ld_ident = create_ld_ident_macho; + s = "ia32-gasmode=macho"; + break; + } + int res = firm_be_option(s); + (void) res; + assert(res); + /* create idents for all known runtime functions */ for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) { - predef_idents[rts_data[i].id] = new_id_from_str(rts_data[i].name); + rts_idents[i] = new_id_from_str(rts_data[i].name); } + + entitymap_init(&entitymap); } static void init_ir_types(void) { static int ir_types_initialized = 0; - if(ir_types_initialized) + if (ir_types_initialized) return; ir_types_initialized = 1; @@ -4813,17 +5422,32 @@ static void init_ir_types(void) ir_type_int = get_ir_type(type_int); ir_type_const_char = get_ir_type(type_const_char); ir_type_wchar_t = get_ir_type(type_wchar_t); - ir_type_void = get_ir_type(type_int); /* we don't have a real void - type in firm */ - - type_void->base.firm_type = ir_type_void; + ir_type_void = get_ir_type(type_void); } void exit_ast2firm(void) { + entitymap_destroy(&entitymap); obstack_free(&asm_obst, NULL); } +static void global_asm_to_firm(statement_t *s) +{ + for (; s != NULL; s = s->base.next) { + assert(s->kind == STATEMENT_ASM); + + char const *const text = s->asms.asm_text.begin; + size_t size = s->asms.asm_text.size; + + /* skip the last \0 */ + if (text[size - 1] == '\0') + --size; + + ident *const id = new_id_from_chars(text, size); + add_irp_asm(id); + } +} + void translation_unit_to_firm(translation_unit_t *unit) { /* just to be sure */ @@ -4834,4 +5458,5 @@ void translation_unit_to_firm(translation_unit_t *unit) init_ir_types(); scope_to_firm(&unit->scope); + global_asm_to_firm(unit->global_asm); }