X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ast2firm.c;h=be8549e43fc5be6909db01daf92d22d1b48c97ea;hb=68a770de4603c696518d3dd2f278985262a1a2a2;hp=832c30f430c2d7f3224bdc5c878924c39677983d;hpb=b07bbf7e0ccdec72dece3551d1f009ded67cd30b;p=cparser diff --git a/ast2firm.c b/ast2firm.c index 832c30f..be8549e 100644 --- a/ast2firm.c +++ b/ast2firm.c @@ -1,7 +1,24 @@ +/* + * This file is part of cparser. + * Copyright (C) 2007-2008 Matthias Braun + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA + * 02111-1307, USA. + */ #include -#define _GNU_SOURCE - #include #include #include @@ -13,10 +30,16 @@ #include "adt/error.h" #include "adt/array.h" +#include "symbol_t.h" #include "token_t.h" #include "type_t.h" #include "ast_t.h" #include "parser.h" +#include "diagnostic.h" +#include "lang_features.h" +#include "types.h" +#include "driver/firm_opt.h" +#include "driver/firm_cmdline.h" #define MAGIC_DEFAULT_PN_NUMBER (long) -314159265 @@ -26,8 +49,6 @@ static ir_type *ir_type_void; static ir_type *ir_type_int; static type_t *type_const_char; -static type_t *type_void; -static type_t *type_int; static int next_value_number_function; static ir_node *continue_label; @@ -38,31 +59,32 @@ static ir_node **imature_blocks; static const declaration_t *current_function_decl; static ir_node *current_function_name; - -typedef enum declaration_type_t { - DECLARATION_TYPE_UNKNOWN, - DECLARATION_TYPE_FUNCTION, - DECLARATION_TYPE_GLOBAL_VARIABLE, - DECLARATION_TYPE_LOCAL_VARIABLE, - DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY, - DECLARATION_TYPE_COMPOUND_MEMBER, - DECLARATION_TYPE_LABEL_BLOCK, - DECLARATION_TYPE_ENUM_ENTRY -} declaration_type_t; +static ir_node *current_funcsig; + +static struct obstack asm_obst; + +typedef enum declaration_kind_t { + DECLARATION_KIND_UNKNOWN, + DECLARATION_KIND_FUNCTION, + DECLARATION_KIND_VARIABLE_LENGTH_ARRAY, + DECLARATION_KIND_GLOBAL_VARIABLE, + DECLARATION_KIND_LOCAL_VARIABLE, + DECLARATION_KIND_LOCAL_VARIABLE_ENTITY, + DECLARATION_KIND_COMPOUND_MEMBER, + DECLARATION_KIND_LABEL_BLOCK, + DECLARATION_KIND_ENUM_ENTRY +} declaration_kind_t; static ir_type *get_ir_type(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) { - (void) pos; -#if 0 - const declaration_t *declaration = & value_numbers[pos]->declaration; + const declaration_t *declaration = get_irg_loc_description(irg, pos); - print_warning_prefix(declaration->source_position); - fprintf(stderr, "variable '%s' might be used uninitialized\n", - declaration->symbol->string); -#endif - fprintf(stderr, "Some variable might be used uninitialized\n"); + warningf(&declaration->source_position, + "variable '%#T' might be used uninitialized", + declaration->type, declaration->symbol); return new_r_Unknown(irg, mode); } @@ -75,7 +97,7 @@ unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg) pos->linenr); } -const char *retrieve_dbg(const dbg_info *dbg, unsigned *line) +const char *dbg_retrieve(const dbg_info *dbg, unsigned *line) { const source_position_t *pos = (const source_position_t*) dbg; if(pos == NULL) @@ -85,12 +107,9 @@ const char *retrieve_dbg(const dbg_info *dbg, unsigned *line) return pos->input_name; } -void init_ast2firm(void) -{ -} - -void exit_ast2firm(void) +static dbg_info *get_dbg_info(const source_position_t *pos) { + return (dbg_info*) pos; } static unsigned unique_id = 0; @@ -104,95 +123,150 @@ static ident *unique_ident(const char *tag) return new_id_from_str(buf); } -static ir_mode *get_atomic_mode(const atomic_type_t* atomic_type) +/** + * Return the signed integer mode of size bytes. + * + * @param size the size + */ +static ir_mode *get_smode(unsigned size) { - switch(atomic_type->atype) { - case ATOMIC_TYPE_SCHAR: - case ATOMIC_TYPE_CHAR: - return mode_Bs; - case ATOMIC_TYPE_UCHAR: - return mode_Bu; - case ATOMIC_TYPE_SHORT: - return mode_Hs; - case ATOMIC_TYPE_USHORT: - return mode_Hu; - case ATOMIC_TYPE_LONG: - case ATOMIC_TYPE_INT: - return mode_Is; - case ATOMIC_TYPE_ULONG: - case ATOMIC_TYPE_UINT: - return mode_Iu; - case ATOMIC_TYPE_LONGLONG: - return mode_Ls; - case ATOMIC_TYPE_ULONGLONG: - return mode_Lu; - case ATOMIC_TYPE_FLOAT: - return mode_F; - case ATOMIC_TYPE_DOUBLE: - return mode_D; - case ATOMIC_TYPE_LONG_DOUBLE: - return mode_E; - case ATOMIC_TYPE_BOOL: - return mode_b; -#ifdef PROVIDE_COMPLEX - case ATOMIC_TYPE_FLOAT_COMPLEX: - case ATOMIC_TYPE_DOUBLE_COMPLEX: - case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX: - panic("complex lowering not implemented yet"); - break; - case ATOMIC_TYPE_FLOAT_IMAGINARY: - case ATOMIC_TYPE_DOUBLE_IMAGINARY: - case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY: - panic("imaginary lowering not implemented yet"); - break; -#endif - case ATOMIC_TYPE_VOID: - /* firm has no real void... */ - return mode_Is; - case ATOMIC_TYPE_INVALID: - break; + 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 ); + + s_modes[size] = res; } - panic("Encountered unknown atomic type"); + 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]; -static unsigned get_type_size(type_t *type); + 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 ); -static unsigned get_atomic_type_size(const atomic_type_t *type) -{ - switch(type->atype) { - case ATOMIC_TYPE_CHAR: - case ATOMIC_TYPE_SCHAR: - case ATOMIC_TYPE_UCHAR: - return 1; + u_modes[size] = res; + } + return res; +} - case ATOMIC_TYPE_SHORT: - case ATOMIC_TYPE_USHORT: - return 2; +/** + * Return the pointer mode of size bytes. + * + * @param size the size + */ +static ir_mode *get_ptrmode(unsigned size, char *name) +{ + static ir_mode *p_modes[16 + 1] = {0, }; + ir_mode *res; - case ATOMIC_TYPE_BOOL: - case ATOMIC_TYPE_INT: - case ATOMIC_TYPE_UINT: - case ATOMIC_TYPE_LONG: - case ATOMIC_TYPE_ULONG: - case ATOMIC_TYPE_FLOAT: - return 4; + if (size <= 0 || size > 16) + return NULL; - case ATOMIC_TYPE_LONGLONG: - case ATOMIC_TYPE_ULONGLONG: - case ATOMIC_TYPE_DOUBLE: - return 8; + res = p_modes[size]; + if (res == NULL) { + unsigned bits; + char buf[32]; - case ATOMIC_TYPE_LONG_DOUBLE: - return 12; + 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); - case ATOMIC_TYPE_VOID: - return 1; + p_modes[size] = res; - case ATOMIC_TYPE_INVALID: - break; + set_reference_mode_signed_eq(res, get_smode(size)); + set_reference_mode_unsigned_eq(res, get_umode(size)); } - panic("Trying to determine size of invalid atomic type"); + return res; +} + +static ir_mode *_atomic_modes[ATOMIC_TYPE_LAST+1]; + +static ir_mode *mode_int, *mode_uint; + +static ir_node *expression_to_firm(const expression_t *expression); +static 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); + + _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]; + + /* 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_compound_type_size(compound_type_t *type) @@ -203,19 +277,23 @@ static unsigned get_compound_type_size(compound_type_t *type) static unsigned get_array_type_size(array_type_t *type) { + assert(!type->is_vla); ir_type *irtype = get_ir_type((type_t*) type); return get_type_size_bytes(irtype); } -static unsigned get_type_size(type_t *type) + +static unsigned get_type_size_const(type_t *type) { type = skip_typeref(type); - switch(type->type) { + switch(type->kind) { + case TYPE_ERROR: + panic("error type occured"); case TYPE_ATOMIC: - return get_atomic_type_size(&type->atomic); + return get_atomic_type_size(type->atomic.akind); case TYPE_ENUM: - return get_mode_size_bytes(mode_Is); + return get_mode_size_bytes(mode_int); case TYPE_COMPOUND_UNION: case TYPE_COMPOUND_STRUCT: return get_compound_type_size(&type->compound); @@ -227,7 +305,9 @@ static unsigned get_type_size(type_t *type) case TYPE_ARRAY: return get_array_type_size(&type->array); case TYPE_BUILTIN: - return get_type_size(type->builtin.real_type); + return get_type_size_const(type->builtin.real_type); + case TYPE_BITFIELD: + panic("type size of bitfield request"); case TYPE_TYPEDEF: case TYPE_TYPEOF: case TYPE_INVALID: @@ -236,6 +316,30 @@ static unsigned get_type_size(type_t *type) panic("Trying to determine size of invalid type"); } +static ir_node *get_type_size(type_t *type) +{ + type = skip_typeref(type); + + if(is_type_array(type) && type->array.is_vla) { + ir_node *size_node = type->array.size_node; + if(size_node == NULL) { + size_node = expression_to_firm(type->array.size_expression); + assert(!is_Const(size_node)); + type->array.size_node = size_node; + } + + ir_node *elem_size = get_type_size(type->array.element_type); + ir_mode *mode = get_irn_mode(size_node); + ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode); + return real_size; + } + + ir_mode *mode = get_ir_mode(type_size_t); + symconst_symbol sym; + sym.type_p = get_ir_type(type); + return new_SymConst(mode, sym, symconst_type_size); +} + static unsigned count_parameters(const function_type_t *function_type) { unsigned count = 0; @@ -249,15 +353,21 @@ static unsigned count_parameters(const function_type_t *function_type) } - - -static long fold_constant(const expression_t *expression); - 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_type_primitive(id, 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); + } return irtype; } @@ -269,7 +379,8 @@ static ir_type *create_method_type(const function_type_t *function_type) ident *id = unique_ident("functiontype"); int n_parameters = count_parameters(function_type); int n_results = return_type == type_void ? 0 : 1; - ir_type *irtype = new_type_method(id, n_parameters, n_results); + dbg_info *dbgi = get_dbg_info(&function_type->type.source_position); + ir_type *irtype = new_d_type_method(id, n_parameters, n_results, dbgi); if(return_type != type_void) { ir_type *restype = get_ir_type(return_type); @@ -299,8 +410,9 @@ static ir_type *create_pointer_type(pointer_type_t *type) * again (might be a struct). We therefore first create a void* pointer * and then set the real points_to type */ - ir_type *ir_type = new_type_pointer(unique_ident("pointer"), - ir_type_void, mode_P_data); + 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); @@ -314,113 +426,332 @@ 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"); - ir_type *ir_type = new_type_array(id, 1, ir_element_type); + ident *id = unique_ident("array"); + dbg_info *dbgi = get_dbg_info(&type->type.source_position); + ir_type *ir_type = new_d_type_array(id, 1, ir_element_type, dbgi); - if(type->size != NULL) { - int n_elements = fold_constant(type->size); + const int align = get_type_alignment_bytes(ir_element_type); + set_type_alignment_bytes(ir_type, align); + + 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); - int align = get_type_alignment_bytes(ir_element_type); if(elemsize % align > 0) { elemsize += align - (elemsize % align); } set_type_size_bytes(ir_type, n_elements * elemsize); - set_type_alignment_bytes(ir_type, align); - set_type_state(ir_type, layout_fixed); + } else { + set_array_lower_bound_int(ir_type, 0, 0); } + set_type_state(ir_type, layout_fixed); return ir_type; } -#define INVALID_TYPE ((ir_type_ptr)-1) +/** + * Return the signed integer type of size bits. + * + * @param size the size + */ +static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp, + unsigned size) +{ + static ir_mode *s_modes[64 + 1] = {NULL, }; + ir_type *res; + ir_mode *mode; + + if (size <= 0 || size > 64) + return NULL; + + mode = s_modes[size]; + if (mode == NULL) { + char name[32]; + + snprintf(name, sizeof(name), "bf_I%u", size); + mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement, + size <= 32 ? 32 : size ); + s_modes[size] = mode; + } + + char name[32]; + snprintf(name, sizeof(name), "I%u", size); + ident *id = new_id_from_str(name); + dbg_info *dbgi = get_dbg_info(&builtin_source_position); + res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi); + set_primitive_base_type(res, base_tp); + + return res; +} + +/** + * Return the unsigned integer type of size bits. + * + * @param size the size + */ +static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp, + unsigned size) +{ + static ir_mode *u_modes[64 + 1] = {NULL, }; + ir_type *res; + ir_mode *mode; + + if (size <= 0 || size > 64) + return NULL; + + mode = u_modes[size]; + if (mode == NULL) { + char name[32]; + + snprintf(name, sizeof(name), "bf_U%u", size); + mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement, + size <= 32 ? 32 : size ); + u_modes[size] = mode; + } + + char name[32]; -static ir_type *create_struct_type(compound_type_t *type) + snprintf(name, sizeof(name), "U%u", size); + ident *id = new_id_from_str(name); + dbg_info *dbgi = get_dbg_info(&builtin_source_position); + res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi); + set_primitive_base_type(res, base_tp); + + return res; +} + +static ir_type *create_bitfield_type(bitfield_type_t *const type) { - symbol_t *symbol = type->declaration->symbol; - ident *id; - if(symbol != NULL) { - id = unique_ident(symbol->string); + type_t *base = skip_typeref(type->base); + assert(base->kind == TYPE_ATOMIC); + ir_type *irbase = get_ir_type(base); + + unsigned size = fold_constant(type->size); + + assert(!is_type_float(base)); + if(is_type_signed(base)) { + return get_signed_int_type_for_bit_size(irbase, size); } else { - id = unique_ident("__anonymous_struct"); + return get_unsigned_int_type_for_bit_size(irbase, size); + } +} + +#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); + +static ir_type *create_struct_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; } - ir_type *ir_type = new_type_struct(id); - type->type.firm_type = ir_type; + size_t align_all = 1; + size_t offset = 0; + size_t bit_offset = 0; + if(irtype == NULL) { + symbol_t *symbol = declaration->symbol; + ident *id; + if(symbol != NULL) { + id = unique_ident(symbol->string); + } else { + id = unique_ident("__anonymous_struct"); + } + dbg_info *dbgi = get_dbg_info(&type->type.source_position); + + irtype = new_d_type_struct(id, dbgi); + + declaration->v.irtype = irtype; + type->type.firm_type = irtype; + } else { + offset = *outer_offset; + align_all = *outer_align; + } - int align_all = 1; - int offset = 0; - declaration_t *entry = type->declaration->context.declarations; + declaration_t *entry = declaration->scope.declarations; for( ; entry != NULL; entry = entry->next) { if(entry->namespc != NAMESPACE_NORMAL) continue; - ident *ident = new_id_from_str(entry->symbol->string); - ir_type_ptr entry_ir_type = get_ir_type(entry->type); + 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) { + 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; + } else { + assert(entry_type->kind == TYPE_BITFIELD); + } + ident = unique_ident("anon"); + } + + ir_type *base_irtype; + if(entry_type->kind == TYPE_BITFIELD) { + base_irtype = get_ir_type(entry_type->bitfield.base); + } else { + base_irtype = get_ir_type(entry_type); + } - int entry_size = get_type_size_bytes(entry_ir_type); - int entry_alignment = get_type_alignment_bytes(entry_ir_type); - int misalign = offset % entry_alignment; - if (misalign != 0) - offset += entry_alignment - misalign; + size_t entry_alignment = get_type_alignment_bytes(base_irtype); + size_t misalign = offset % entry_alignment; - ir_entity *entity = new_entity(ir_type, ident, entry_ir_type); - set_entity_offset(entity, offset); - add_struct_member(ir_type, entity); - entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER; - entry->v.entity = entity; + ir_type *entry_irtype = get_ir_type(entry_type); + ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi); + + size_t base; + size_t bits_remainder; + if(entry_type->kind == TYPE_BITFIELD) { + size_t size_bits = fold_constant(entry_type->bitfield.size); + size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset; + + if(size_bits > rest_size_bits) { + /* start a new bucket */ + offset += entry_alignment - misalign; + bit_offset = 0; + + base = offset; + bits_remainder = 0; + } else { + /* put into current bucket */ + base = offset - misalign; + bits_remainder = misalign * 8 + bit_offset; + } + + offset += size_bits / 8; + bit_offset = bit_offset + (size_bits % 8); + } else { + size_t entry_size = get_type_size_bytes(base_irtype); + if(misalign > 0 || bit_offset > 0) + offset += entry_alignment - misalign; + + base = offset; + bits_remainder = 0; + offset += entry_size; + bit_offset = 0; + } - offset += entry_size; if(entry_alignment > align_all) { if(entry_alignment % align_all != 0) { - panic("Uneven alignments not supported yet"); + panic("uneven alignments not supported yet"); } align_all = entry_alignment; } + + set_entity_offset(entity, base); + set_entity_offset_bits_remainder(entity, + (unsigned char) bits_remainder); + //add_struct_member(irtype, entity); + entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER; + assert(entry->v.entity == NULL); + entry->v.entity = entity; } - int misalign = offset % align_all; - offset += misalign; - set_type_alignment_bytes(ir_type, align_all); - set_type_size_bytes(ir_type, offset); - set_type_state(ir_type, layout_fixed); + size_t misalign = offset % align_all; + if(misalign > 0 || bit_offset > 0) { + offset += align_all - misalign; + } - return ir_type; + 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); + } + + return irtype; } -static ir_type *create_union_type(compound_type_t *type) +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; - symbol_t *symbol = declaration->symbol; - ident *id; - if(symbol != NULL) { - id = unique_ident(symbol->string); + 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 { - id = unique_ident("__anonymous_union"); + offset = *outer_offset; + align_all = *outer_align; } - ir_type *ir_type = new_type_union(id); - type->type.firm_type = ir_type; + type->type.firm_type = irtype; - int align_all = 1; - int size = 0; - declaration_t *entry = declaration->context.declarations; + declaration_t *entry = declaration->scope.declarations; for( ; entry != NULL; entry = entry->next) { if(entry->namespc != NAMESPACE_NORMAL) continue; - ident *ident = new_id_from_str(entry->symbol->string); - ir_type_ptr entry_ir_type = get_ir_type(entry->type); + 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); + } 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"); + } - int entry_size = get_type_size_bytes(entry_ir_type); - int entry_alignment = get_type_alignment_bytes(entry_ir_type); + size_t entry_size = get_type_size_bytes(entry_ir_type); + size_t entry_alignment = get_type_alignment_bytes(entry_ir_type); - ir_entity *entity = new_entity(ir_type, ident, entry_ir_type); - add_union_member(ir_type, entity); + 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_type = DECLARATION_TYPE_COMPOUND_MEMBER; + entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER; + assert(entry->v.entity == NULL); entry->v.entity = entity; if(entry_size > size) { @@ -434,21 +765,35 @@ static ir_type *create_union_type(compound_type_t *type) } } - set_type_alignment_bytes(ir_type, align_all); - set_type_size_bytes(ir_type, size); - set_type_state(ir_type, layout_fixed); + if(outer_offset != NULL) { + assert(*outer_offset == offset); - return ir_type; -} + size_t misalign = offset % align_all; + if (misalign != 0) + size += align_all - misalign; + *outer_offset += size; -static ir_node *expression_to_firm(const expression_t *expression); -static inline ir_mode *get_ir_mode(type_t *type); + if(align_all > *outer_align) { + if(align_all % *outer_align != 0) { + panic("uneven alignments not supported yet"); + } + *outer_align = align_all; + } + } else { + set_type_alignment_bytes(irtype, align_all); + set_type_size_bytes(irtype, size); + set_type_state(irtype, layout_fixed); + declaration->v.irtype = irtype; + } + + return irtype; +} static ir_type *create_enum_type(enum_type_t *const type) { type->type.firm_type = ir_type_int; - ir_mode *const mode = get_ir_mode((type_t*) type); + ir_mode *const mode = mode_int; tarval *const one = get_mode_one(mode); tarval * tv_next = get_tarval_null(mode); @@ -457,7 +802,7 @@ static ir_type *create_enum_type(enum_type_t *const type) if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY) break; - declaration->declaration_type = DECLARATION_TYPE_ENUM_ENTRY; + declaration->declaration_kind = DECLARATION_KIND_ENUM_ENTRY; expression_t *const init = declaration->init.enum_value; if (init != NULL) { @@ -486,7 +831,9 @@ static ir_type *get_ir_type(type_t *type) } ir_type *firm_type = NULL; - switch(type->type) { + switch(type->kind) { + case TYPE_ERROR: + panic("error type occured"); case TYPE_ATOMIC: firm_type = create_atomic_type(&type->atomic); break; @@ -500,10 +847,10 @@ 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); + firm_type = create_struct_type(&type->compound, NULL, NULL, NULL); break; case TYPE_COMPOUND_UNION: - firm_type = create_union_type(&type->compound); + firm_type = create_union_type(&type->compound, NULL, NULL, NULL); break; case TYPE_ENUM: firm_type = create_enum_type(&type->enumt); @@ -511,6 +858,10 @@ static ir_type *get_ir_type(type_t *type) case TYPE_BUILTIN: firm_type = get_ir_type(type->builtin.real_type); break; + case TYPE_BITFIELD: + firm_type = create_bitfield_type(&type->bitfield); + break; + case TYPE_TYPEOF: case TYPE_TYPEDEF: case TYPE_INVALID: @@ -529,7 +880,7 @@ static inline ir_mode *get_ir_mode(type_t *type) /* firm doesn't report a mode for arrays somehow... */ if(is_Array_type(irtype)) { - return mode_P; + return mode_P_data; } ir_mode *mode = get_type_mode(irtype); @@ -537,11 +888,94 @@ 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 */ + int n_res; /**< number of return values */ + const char *name; /**< the name of the rts function */ + int n_params; /**< number of parameters */ + unsigned flags; /**< language flags */ +} rts_data[] = { + { rts_debugbreak, 0, "__debugbreak", 0, _MS }, + { rts_abort, 0, "abort", 0, _C89 }, + { rts_abs, 1, "abs", 1, _C89 }, + { rts_labs, 1, "labs", 1, _C89 }, + { rts_llabs, 1, "llabs", 1, _C99 }, + { rts_imaxabs, 1, "imaxabs", 1, _C99 }, + + { rts_fabs, 1, "fabs", 1, _C89 }, + { rts_sqrt, 1, "sqrt", 1, _C89 }, + { rts_cbrt, 1, "cbrt", 1, _C99 }, + { rts_exp, 1, "exp", 1, _C89 }, + { rts_exp2, 1, "exp2", 1, _C89 }, + { rts_exp10, 1, "exp10", 1, _GNUC }, + { rts_log, 1, "log", 1, _C89 }, + { rts_log2, 1, "log2", 1, _C89 }, + { rts_log10, 1, "log10", 1, _C89 }, + { rts_pow, 1, "pow", 2, _C89 }, + { rts_sin, 1, "sin", 1, _C89 }, + { rts_cos, 1, "cos", 1, _C89 }, + { rts_tan, 1, "tan", 1, _C89 }, + { rts_asin, 1, "asin", 1, _C89 }, + { rts_acos, 1, "acos", 1, _C89 }, + { rts_atan, 1, "atan", 1, _C89 }, + { rts_sinh, 1, "sinh", 1, _C89 }, + { rts_cosh, 1, "cosh", 1, _C89 }, + { rts_tanh, 1, "tanh", 1, _C89 }, + + { rts_fabsf, 1, "fabsf", 1, _C99 }, + { rts_sqrtf, 1, "sqrtf", 1, _C99 }, + { rts_cbrtf, 1, "cbrtf", 1, _C99 }, + { rts_expf, 1, "expf", 1, _C99 }, + { rts_exp2f, 1, "exp2f", 1, _C99 }, + { rts_exp10f, 1, "exp10f", 1, _GNUC }, + { rts_logf, 1, "logf", 1, _C99 }, + { rts_log2f, 1, "log2f", 1, _C99 }, + { rts_log10f, 1, "log10f", 1, _C99 }, + { rts_powf, 1, "powf", 2, _C99 }, + { rts_sinf, 1, "sinf", 1, _C99 }, + { rts_cosf, 1, "cosf", 1, _C99 }, + { rts_tanf, 1, "tanf", 1, _C99 }, + { rts_asinf, 1, "asinf", 1, _C99 }, + { rts_acosf, 1, "acosf", 1, _C99 }, + { rts_atanf, 1, "atanf", 1, _C99 }, + { rts_sinhf, 1, "sinhf", 1, _C99 }, + { rts_coshf, 1, "coshf", 1, _C99 }, + { rts_tanhf, 1, "tanhf", 1, _C99 }, + + { rts_fabsl, 1, "fabsl", 1, _C99 }, + { rts_sqrtl, 1, "sqrtl", 1, _C99 }, + { rts_cbrtl, 1, "cbrtl", 1, _C99 }, + { rts_expl, 1, "expl", 1, _C99 }, + { rts_exp2l, 1, "exp2l", 1, _C99 }, + { rts_exp10l, 1, "exp10l", 1, _GNUC }, + { rts_logl, 1, "logl", 1, _C99 }, + { rts_log2l, 1, "log2l", 1, _C99 }, + { rts_log10l, 1, "log10l", 1, _C99 }, + { rts_powl, 1, "powl", 2, _C99 }, + { rts_sinl, 1, "sinl", 1, _C99 }, + { rts_cosl, 1, "cosl", 1, _C99 }, + { rts_tanl, 1, "tanl", 1, _C99 }, + { rts_asinl, 1, "asinl", 1, _C99 }, + { rts_acosl, 1, "acosl", 1, _C99 }, + { rts_atanl, 1, "atanl", 1, _C99 }, + { rts_sinhl, 1, "sinhl", 1, _C99 }, + { rts_coshl, 1, "coshl", 1, _C99 }, + { rts_tanhl, 1, "tanhl", 1, _C99 }, + + { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */ + { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */ + { rts_strcmp, 1, "strcmp", 2, _C89 }, + { rts_strncmp, 1, "strncmp", 3, _C89 } +}; + static ir_entity* get_function_entity(declaration_t *declaration) { - if(declaration->declaration_type == DECLARATION_TYPE_FUNCTION) + if(declaration->declaration_kind == DECLARATION_KIND_FUNCTION) return declaration->v.entity; - assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN); + assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN); symbol_t *symbol = declaration->symbol; ident *id = new_id_from_str(symbol->string); @@ -550,7 +984,8 @@ 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)); - ir_entity *entity = new_entity(global_type, id, 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) { @@ -559,23 +994,43 @@ static ir_entity* get_function_entity(declaration_t *declaration) set_entity_visibility(entity, visibility_external_visible); } else { set_entity_visibility(entity, visibility_external_allocated); + + /* 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; + + 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; + } + } + } } + set_entity_allocation(entity, allocation_static); - declaration->declaration_type = DECLARATION_TYPE_FUNCTION; + declaration->declaration_kind = DECLARATION_KIND_FUNCTION; declaration->v.entity = entity; return entity; } -static dbg_info *get_dbg_info(const source_position_t *pos) -{ - return (dbg_info*) pos; -} - static ir_node *const_to_firm(const const_expression_t *cnst) { - dbg_info *dbgi = get_dbg_info(&cnst->expression.source_position); - ir_mode *mode = get_ir_mode(cnst->expression.datatype); + dbg_info *dbgi = get_dbg_info(&cnst->base.source_position); + ir_mode *mode = get_ir_mode(cnst->base.type); char buf[128]; tarval *tv; @@ -595,31 +1050,65 @@ static ir_node *const_to_firm(const const_expression_t *cnst) return new_d_Const(dbgi, mode, tv); } -static ir_node *create_symconst(dbg_info *dbgi, ir_entity *entity) +static ir_node *character_constant_to_firm(const const_expression_t *cnst) +{ + dbg_info *dbgi = get_dbg_info(&cnst->base.source_position); + ir_mode *mode = get_ir_mode(cnst->base.type); + + 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]); + } + char buf[128]; + size_t len = snprintf(buf, sizeof(buf), "%lld", v); + tarval *tv = new_tarval_from_str(buf, len, mode); + + return new_d_Const(dbgi, mode, tv); +} + +static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst) +{ + dbg_info *dbgi = get_dbg_info(&cnst->base.source_position); + ir_mode *mode = get_ir_mode(cnst->base.type); + + long long int v = cnst->v.wide_character.begin[0]; + + char buf[128]; + size_t len = snprintf(buf, sizeof(buf), "%lld", v); + tarval *tv = new_tarval_from_str(buf, len, mode); + + return new_d_Const(dbgi, mode, tv); +} + +static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode, + ir_entity *entity) { assert(entity != NULL); union symconst_symbol sym; sym.entity_p = entity; - return new_d_SymConst(dbgi, sym, symconst_addr_ent); + return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent); } static ir_node *string_to_firm(const source_position_t *const src_pos, const char *const id_prefix, - const char *const string) + const string_t *const value) { - ir_type *const global_type = get_glob_type(); - ir_type *const type = new_type_array(unique_ident("strtype"), 1, - ir_type_const_char); + 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_char, dbgi); ident *const id = unique_ident(id_prefix); - ir_entity *const entity = new_entity(global_type, id, type); + ir_entity *const entity = new_d_entity(global_type, id, type, dbgi); set_entity_ld_ident(entity, id); set_entity_variability(entity, variability_constant); + set_entity_allocation(entity, allocation_static); ir_type *const elem_type = ir_type_const_char; ir_mode *const mode = get_type_mode(elem_type); - const size_t slen = strlen(string) + 1; + const char* const string = value->begin; + const size_t slen = value->size; set_array_lower_bound_int(type, 0, 0); set_array_upper_bound_int(type, 0, slen); @@ -634,16 +1123,14 @@ static ir_node *string_to_firm(const source_position_t *const src_pos, set_array_entity_values(entity, tvs, slen); free(tvs); - dbg_info *const dbgi = get_dbg_info(src_pos); - - return create_symconst(dbgi, entity); + return create_symconst(dbgi, mode_P_data, entity); } static ir_node *string_literal_to_firm( const string_literal_expression_t* literal) { - return string_to_firm(&literal->expression.source_position, "Lstr", - literal->value); + return string_to_firm(&literal->base.source_position, "Lstr", + &literal->value); } static ir_node *wide_string_literal_to_firm( @@ -651,13 +1138,15 @@ static ir_node *wide_string_literal_to_firm( { ir_type *const global_type = get_glob_type(); ir_type *const elem_type = ir_type_wchar_t; - ir_type *const type = new_type_array(unique_ident("strtype"), 1, - elem_type); + dbg_info *const dbgi = get_dbg_info(&literal->base.source_position); + ir_type *const type = new_d_type_array(unique_ident("strtype"), 1, + elem_type, dbgi); ident *const id = unique_ident("Lstr"); - ir_entity *const entity = new_entity(global_type, id, type); + ir_entity *const entity = new_d_entity(global_type, id, type, dbgi); set_entity_ld_ident(entity, id); set_entity_variability(entity, variability_constant); + set_entity_allocation(entity, allocation_static); ir_mode *const mode = get_type_mode(elem_type); @@ -677,15 +1166,16 @@ static ir_node *wide_string_literal_to_firm( set_array_entity_values(entity, tvs, slen); free(tvs); - dbg_info *const dbgi = get_dbg_info(&literal->expression.source_position); - - return create_symconst(dbgi, entity); + return create_symconst(dbgi, mode_P_data, entity); } -static ir_node *deref_address(ir_type *const irtype, ir_node *const addr, +static ir_node *deref_address(type_t *const type, ir_node *const addr, dbg_info *const dbgi) { - if(is_compound_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; } @@ -694,6 +1184,11 @@ 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; } @@ -721,7 +1216,7 @@ static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node) static ir_node *get_global_var_address(dbg_info *const dbgi, const declaration_t *const decl) { - assert(decl->declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE); + assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE); ir_entity *const entity = decl->v.entity; switch ((storage_class_tag_t)decl->storage_class) { @@ -734,52 +1229,68 @@ static ir_node *get_global_var_address(dbg_info *const dbgi, } default: - return create_symconst(dbgi, entity); + return create_symconst(dbgi, mode_P_data, entity); + } +} + +/* 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; + const ir_type *const owner = get_entity_owner(ent); + if (owner == get_irg_frame_type(irg)) { + return get_irg_frame(irg); + } else { + assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg)))); + return get_irg_value_param_base(irg); } } static ir_node *reference_expression_to_firm(const reference_expression_t *ref) { - dbg_info *dbgi = get_dbg_info(&ref->expression.source_position); + dbg_info *dbgi = get_dbg_info(&ref->base.source_position); declaration_t *declaration = ref->declaration; type_t *type = skip_typeref(declaration->type); - switch((declaration_type_t) declaration->declaration_type) { - case DECLARATION_TYPE_UNKNOWN: + switch((declaration_kind_t) declaration->declaration_kind) { + case DECLARATION_KIND_UNKNOWN: if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY) { break; } get_ir_type(type); /* FALLTHROUGH */ - case DECLARATION_TYPE_ENUM_ENTRY: { + case DECLARATION_KIND_ENUM_ENTRY: { ir_mode *const mode = get_ir_mode(type); return new_Const(mode, declaration->v.enum_val); } - case DECLARATION_TYPE_LOCAL_VARIABLE: { - ir_mode *mode = get_ir_mode(type); + case DECLARATION_KIND_LOCAL_VARIABLE: { + ir_mode *const mode = get_ir_mode(type); return get_value(declaration->v.value_number, mode); } - case DECLARATION_TYPE_FUNCTION: { - return create_symconst(dbgi, declaration->v.entity); + case DECLARATION_KIND_FUNCTION: { + ir_mode *const mode = get_ir_mode(type); + return create_symconst(dbgi, mode, declaration->v.entity); } - case DECLARATION_TYPE_GLOBAL_VARIABLE: { + 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(declaration->type, addr, dbgi); } - case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: { + case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: { ir_entity *entity = declaration->v.entity; - ir_node *frame = get_irg_frame(current_ir_graph); + 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(declaration->type, sel, dbgi); } - case DECLARATION_TYPE_COMPOUND_MEMBER: - case DECLARATION_TYPE_LABEL_BLOCK: + case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY: + return declaration->v.vla_base; + + case DECLARATION_KIND_COMPOUND_MEMBER: + case DECLARATION_KIND_LABEL_BLOCK: panic("not implemented reference type"); } @@ -788,34 +1299,39 @@ static ir_node *reference_expression_to_firm(const reference_expression_t *ref) static ir_node *reference_addr(const reference_expression_t *ref) { - dbg_info *dbgi = get_dbg_info(&ref->expression.source_position); + dbg_info *dbgi = get_dbg_info(&ref->base.source_position); declaration_t *declaration = ref->declaration; - switch((declaration_type_t) declaration->declaration_type) { - case DECLARATION_TYPE_UNKNOWN: + switch((declaration_kind_t) declaration->declaration_kind) { + case DECLARATION_KIND_UNKNOWN: break; - case DECLARATION_TYPE_LOCAL_VARIABLE: + case DECLARATION_KIND_LOCAL_VARIABLE: panic("local variable without entity has no address"); - case DECLARATION_TYPE_FUNCTION: { - return create_symconst(dbgi, declaration->v.entity); + case DECLARATION_KIND_FUNCTION: { + type_t *const type = skip_typeref(ref->base.type); + ir_mode *const mode = get_ir_mode(type); + return create_symconst(dbgi, mode, declaration->v.entity); } - case DECLARATION_TYPE_GLOBAL_VARIABLE: { + case DECLARATION_KIND_GLOBAL_VARIABLE: { ir_node *const addr = get_global_var_address(dbgi, declaration); return addr; } - case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: { + case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: { ir_entity *entity = declaration->v.entity; - ir_node *frame = get_irg_frame(current_ir_graph); + ir_node *frame = get_local_frame(entity); ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity); return sel; } - case DECLARATION_TYPE_ENUM_ENTRY: + case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY: + return declaration->v.vla_base; + + case DECLARATION_KIND_ENUM_ENTRY: panic("trying to reference enum entry"); - case DECLARATION_TYPE_COMPOUND_MEMBER: - case DECLARATION_TYPE_LABEL_BLOCK: + case DECLARATION_KIND_COMPOUND_MEMBER: + case DECLARATION_KIND_LABEL_BLOCK: panic("not implemented reference type"); } @@ -824,12 +1340,12 @@ static ir_node *reference_addr(const reference_expression_t *ref) static ir_node *process_builtin_call(const call_expression_t *call) { - dbg_info *dbgi = get_dbg_info(&call->expression.source_position); + dbg_info *dbgi = get_dbg_info(&call->base.source_position); - assert(call->function->type == EXPR_BUILTIN_SYMBOL); + assert(call->function->kind == EXPR_BUILTIN_SYMBOL); builtin_symbol_expression_t *builtin = &call->function->builtin_symbol; - type_t *type = skip_typeref(builtin->expression.datatype); + type_t *type = skip_typeref(builtin->base.type); assert(is_type_pointer(type)); type_t *function_type = skip_typeref(type->pointer.points_to); @@ -874,12 +1390,12 @@ static ir_node *call_expression_to_firm(const call_expression_t *call) assert(get_cur_block() != NULL); expression_t *function = call->function; - if(function->type == EXPR_BUILTIN_SYMBOL) { + if(function->kind == EXPR_BUILTIN_SYMBOL) { return process_builtin_call(call); } ir_node *callee = expression_to_firm(function); - type_t *type = skip_typeref(function->base.datatype); + type_t *type = skip_typeref(function->base.type); assert(is_type_pointer(type)); pointer_type_t *pointer_type = &type->pointer; type_t *points_to = skip_typeref(pointer_type->points_to); @@ -892,7 +1408,7 @@ static ir_node *call_expression_to_firm(const call_expression_t *call) ++n_parameters; } - dbg_info *dbgi = get_dbg_info(&call->expression.source_position); + dbg_info *dbgi = get_dbg_info(&call->base.source_position); ir_type *ir_method_type = get_ir_type((type_t*) function_type); ir_type *new_method_type = NULL; @@ -900,8 +1416,9 @@ static ir_node *call_expression_to_firm(const call_expression_t *call) /* we need to construct a new method type matching the call * arguments... */ int n_res = get_method_n_ress(ir_method_type); - new_method_type = new_type_method(unique_ident("calltype"), - n_parameters, n_res); + 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); set_method_calling_convention(new_method_type, get_method_calling_convention(ir_method_type)); set_method_additional_properties(new_method_type, @@ -924,7 +1441,7 @@ static ir_node *call_expression_to_firm(const call_expression_t *call) in[n] = arg_node; if(new_method_type != NULL) { - ir_type *irtype = get_ir_type(expression->base.datatype); + ir_type *irtype = get_ir_type(expression->base.type); set_method_param_type(new_method_type, n, irtype); } @@ -971,11 +1488,13 @@ static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type, { value = do_strict_conv(dbgi, value); - ir_node *memory = get_store(); + ir_node *memory = get_store(); 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); @@ -985,25 +1504,100 @@ static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type, } } +static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size) +{ + tarval *all_one = get_mode_all_one(mode); + int mode_size = get_mode_size_bits(mode); + + assert(offset >= 0 && size >= 0); + assert(offset + size <= mode_size); + if(size == mode_size) { + return all_one; + } + + long shiftr = get_mode_size_bits(mode) - size; + long shiftl = offset; + tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint); + tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint); + tarval *mask0 = tarval_shr(all_one, tv_shiftr); + tarval *mask1 = tarval_shl(mask0, tv_shiftl); + + return mask1; +} + +static void bitfield_store_to_firm(const unary_expression_t *expression, + 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); + + assert(get_irn_mode(value) == mode); + + 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; + 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)); + + tarval *mask = create_bitfield_mask(mode, 0, bitsize); + ir_node *mask_node = new_d_Const(dbgi, mode, mask); + ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode); + tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint); + ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl); + ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode); + + /* load current value */ + ir_node *mem = get_store(); + ir_node *load = new_d_Load(dbgi, mem, addr, mode); + ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M); + ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res); + tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize); + tarval *inv_mask = tarval_not(shift_mask); + ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask); + ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode); + + /* construct new value and store */ + ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode); + ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val); + ir_node *store_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) { dbg_info *dbgi = get_dbg_info(&expression->base.source_position); value = do_strict_conv(dbgi, value); - if(expression->type == EXPR_REFERENCE) { - reference_expression_t *ref = (reference_expression_t*) expression; + if(expression->kind == EXPR_REFERENCE) { + const reference_expression_t *ref = &expression->reference; declaration_t *declaration = ref->declaration; - assert(declaration->declaration_type != DECLARATION_TYPE_UNKNOWN); - if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) { + assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN); + 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; + } + ir_node *addr = expression_to_addr(expression); - type_t *type = skip_typeref(expression->base.datatype); + type_t *type = skip_typeref(expression->base.type); assign_value(dbgi, addr, type, value); } @@ -1026,8 +1620,8 @@ static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode) static ir_node *create_incdec(const unary_expression_t *expression) { - dbg_info *dbgi = get_dbg_info(&expression->expression.source_position); - type_t *type = skip_typeref(expression->expression.datatype); + 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; @@ -1036,30 +1630,29 @@ static ir_node *create_incdec(const unary_expression_t *expression) ir_node *offset; if(is_type_pointer(type)) { pointer_type_t *pointer_type = &type->pointer; - unsigned elem_size = get_type_size(pointer_type->points_to); - offset = new_Const_long(mode_Is, elem_size); + offset = get_type_size(pointer_type->points_to); } else { assert(is_type_arithmetic(type)); offset = new_Const(mode, get_mode_one(mode)); } - switch(expression->type) { - case UNEXPR_POSTFIX_INCREMENT: { + 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 UNEXPR_POSTFIX_DECREMENT: { + 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 UNEXPR_PREFIX_INCREMENT: { + 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 UNEXPR_PREFIX_DECREMENT: { + 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; @@ -1070,83 +1663,252 @@ static ir_node *create_incdec(const unary_expression_t *expression) } } -static ir_node *unary_expression_to_firm(const unary_expression_t *expression) +static bool is_local_variable(expression_t *expression) { - dbg_info *dbgi = get_dbg_info(&expression->expression.source_position); - type_t *type = skip_typeref(expression->expression.datatype); - ir_mode *mode = get_ir_mode(type); - - if(expression->type == UNEXPR_TAKE_ADDRESS) - return expression_to_addr(expression->value); + if (expression->kind != EXPR_REFERENCE) + return false; + reference_expression_t *ref_expr = &expression->reference; + declaration_t *declaration = ref_expr->declaration; + return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE; +} - const expression_t *value = expression->value; - ir_node *value_node = expression_to_firm(value); +static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type) +{ + switch(kind) { + case EXPR_BINARY_EQUAL: return pn_Cmp_Eq; + case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg; + case EXPR_BINARY_NOTEQUAL: + return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg; + case EXPR_BINARY_ISLESS: + case EXPR_BINARY_LESS: return pn_Cmp_Lt; + case EXPR_BINARY_ISLESSEQUAL: + case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le; + case EXPR_BINARY_ISGREATER: + case EXPR_BINARY_GREATER: return pn_Cmp_Gt; + case EXPR_BINARY_ISGREATEREQUAL: + case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge; + case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo; - switch(expression->type) { - case UNEXPR_NEGATE: - return new_d_Minus(dbgi, value_node, mode); - case UNEXPR_PLUS: - return value_node; - case UNEXPR_BITWISE_NEGATE: - return new_d_Not(dbgi, value_node, mode); - case UNEXPR_NOT: { - 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; + default: + break; } - case UNEXPR_DEREFERENCE: { - type_t *value_type = skip_typeref(value->base.datatype); - 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); + panic("trying to get pn_Cmp from non-comparison binexpr type"); +} + +/** + * Handle the assume optimizer hint: check if a Confirm + * node can be created. + * + * @param dbi debug info + * @param expr the IL assume expression + * + * we support here only some simple cases: + * - var rel const + * - const rel val + * - var rel var + */ +static ir_node *handle_assume_compare(dbg_info *dbi, + const binary_expression_t *expression) +{ + expression_t *op1 = expression->left; + expression_t *op2 = expression->right; + declaration_t *var2, *var = NULL; + ir_node *res = NULL; + pn_Cmp cmp_val; + + cmp_val = get_pnc(expression->base.kind, op1->base.type); + + if (is_local_variable(op1) && is_local_variable(op2)) { + var = op1->reference.declaration; + var2 = op2->reference.declaration; + + type_t *const type = skip_typeref(var->type); + ir_mode *const mode = get_ir_mode(type); + + ir_node *const irn1 = get_value(var->v.value_number, mode); + ir_node *const irn2 = get_value(var2->v.value_number, mode); + + res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val)); + set_value(var2->v.value_number, res); + + res = new_d_Confirm(dbi, irn1, irn2, cmp_val); + set_value(var->v.value_number, res); + + return res; } - case UNEXPR_POSTFIX_INCREMENT: - case UNEXPR_POSTFIX_DECREMENT: - case UNEXPR_PREFIX_INCREMENT: - case UNEXPR_PREFIX_DECREMENT: - return create_incdec(expression); - case UNEXPR_CAST: { - ir_node *node = create_conv(dbgi, value_node, get_ir_mode(type)); - node = do_strict_conv(dbgi, node); - return node; + + expression_t *con; + if (is_local_variable(op1) && is_constant_expression(op2)) { + var = op1->reference.declaration; + con = op2; + } else if (is_constant_expression(op1) && is_local_variable(op2)) { + cmp_val = get_inversed_pnc(cmp_val); + var = op2->reference.declaration; + con = op1; } - case UNEXPR_CAST_IMPLICIT: - return create_conv(dbgi, value_node, get_ir_mode(type)); - case UNEXPR_TAKE_ADDRESS: - case UNEXPR_INVALID: - break; + if (var != NULL) { + type_t *const type = skip_typeref(var->type); + ir_mode *const mode = get_ir_mode(type); + + res = get_value(var->v.value_number, mode); + res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val); + set_value(var->v.value_number, res); } - panic("invalid UNEXPR type found"); + return res; +} + +/** + * Handle the assume optimizer hint. + * + * @param dbi debug info + * @param expr the IL assume expression + */ +static ir_node *handle_assume(dbg_info *dbi, 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: + return handle_assume_compare(dbi, &expression->binary); + default: + return NULL; + } +} + +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 long get_pnc(binary_expression_type_t type) +static ir_node *unary_expression_to_firm(const unary_expression_t *expression) { - switch(type) { - case BINEXPR_EQUAL: return pn_Cmp_Eq; - case BINEXPR_NOTEQUAL: return pn_Cmp_Lg; - case BINEXPR_LESS: return pn_Cmp_Lt; - case BINEXPR_LESSEQUAL: return pn_Cmp_Le; - case BINEXPR_GREATER: return pn_Cmp_Gt; - case BINEXPR_GREATEREQUAL: return pn_Cmp_Ge; + 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) + return expression_to_addr(expression->value); + + const expression_t *value = expression->value; + + switch(expression->base.kind) { + case EXPR_UNARY_NEGATE: { + ir_node *value_node = expression_to_firm(value); + ir_mode *mode = get_ir_mode(type); + return new_d_Minus(dbgi, value_node, mode); + } + case EXPR_UNARY_PLUS: + return expression_to_firm(value); + case EXPR_UNARY_BITWISE_NEGATE: { + ir_node *value_node = expression_to_firm(value); + ir_mode *mode = get_ir_mode(type); + 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; + } + case EXPR_UNARY_DEREFERENCE: { + ir_node *value_node = expression_to_firm(value); + type_t *value_type = skip_typeref(value->base.type); + assert(is_type_pointer(value_type)); + type_t *points_to = value_type->pointer.points_to; + return deref_address(points_to, value_node, dbgi); + } + case EXPR_UNARY_POSTFIX_INCREMENT: + case EXPR_UNARY_POSTFIX_DECREMENT: + case EXPR_UNARY_PREFIX_INCREMENT: + case EXPR_UNARY_PREFIX_DECREMENT: + return create_incdec(expression); + case EXPR_UNARY_CAST: { + ir_node *value_node = expression_to_firm(value); + if(is_type_scalar(type)) { + ir_mode *mode = get_ir_mode(type); + ir_node *node = create_conv(dbgi, value_node, mode); + node = do_strict_conv(dbgi, node); + return node; + } else { + /* make sure firm type is constructed */ + (void) get_ir_type(type); + return value_node; + } + } + case EXPR_UNARY_CAST_IMPLICIT: { + ir_node *value_node = expression_to_firm(value); + if(is_type_scalar(type)) { + ir_mode *mode = get_ir_mode(type); + return create_conv(dbgi, value_node, mode); + } else { + return value_node; + } + } + case EXPR_UNARY_ASSUME: + 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; } - panic("trying to get pn_Cmp from non-comparison binexpr type"); + panic("invalid UNEXPR type found"); } -static ir_node *create_lazy_op(const binary_expression_t *expression) +static ir_node *produce_condition_result(const expression_t *expression, + dbg_info *dbgi) { - dbg_info *dbgi = get_dbg_info(&expression->expression.source_position); - type_t *type = expression->expression.datatype; - ir_mode *mode = get_ir_mode(type); - + ir_mode *mode = get_ir_mode(expression->base.type); ir_node *cur_block = get_cur_block(); ir_node *one_block = new_immBlock(); @@ -1158,8 +1920,7 @@ static ir_node *create_lazy_op(const binary_expression_t *expression) ir_node *jmp_zero = new_d_Jmp(dbgi); set_cur_block(cur_block); - create_condition_evaluation((const expression_t*) expression, - one_block, zero_block); + create_condition_evaluation(expression, one_block, zero_block); mature_immBlock(one_block); mature_immBlock(zero_block); @@ -1174,16 +1935,38 @@ static ir_node *create_lazy_op(const binary_expression_t *expression) 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->expression.source_position); + 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.datatype; + 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); @@ -1199,15 +1982,15 @@ static ir_node *pointer_arithmetic(ir_node *const pointer, dbg_info *const dbgi, const create_arithmetic_func func) { - pointer_type_t *const pointer_type = (pointer_type_t*)type; + pointer_type_t *const pointer_type = &type->pointer; type_t *const points_to = pointer_type->points_to; - const unsigned elem_size = get_type_size(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_Is); - ir_node *const cnst = new_Const_long(mode_Is, (long)elem_size); - ir_node *const mul = new_d_Mul(dbgi, integer, cnst, mode_Is); + 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; } @@ -1218,19 +2001,19 @@ static ir_node *pointer_arithmetic(ir_node *const pointer, static ir_node *create_arithmetic_assign_binop( const binary_expression_t *expression, create_arithmetic_func func) { - dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position); - type_t *const type = skip_typeref(expression->expression.datatype); + 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); + 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); + ir_mode *const mode = get_ir_mode(type); value = create_conv(dbgi, value, mode); set_value_for_expression(expression->left, value); @@ -1239,15 +2022,15 @@ static ir_node *create_arithmetic_assign_binop( static ir_node *create_add(const binary_expression_t *expression) { - dbg_info *dbgi = get_dbg_info(&expression->expression.source_position); + 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->expression.datatype; + type_t *type = expression->base.type; expression_t *expr_left = expression->left; expression_t *expr_right = expression->right; - type_t *type_left = skip_typeref(expr_left->base.datatype); - type_t *type_right = skip_typeref(expr_right->base.datatype); + type_t *type_left = skip_typeref(expr_left->base.type); + type_t *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); @@ -1264,27 +2047,28 @@ static ir_node *create_add(const binary_expression_t *expression) static ir_node *create_sub(const binary_expression_t *expression) { - dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position); + 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->expression.datatype; - type_t *const type_left = skip_typeref(expr_left->base.datatype); - type_t *const type_right = skip_typeref(expr_right->base.datatype); + 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; - const unsigned elem_size = get_type_size(ptr_type->points_to); - ir_mode *const mode = get_ir_mode(type); - ir_node *const sub = new_d_Sub(dbgi, left, right, mode); - ir_node *const cnst = new_Const_long(mode_Is, (long)elem_size); - ir_node *const no_mem = new_NoMem(); - ir_node *const div = new_d_Div(dbgi, no_mem, sub, cnst, mode, - op_pin_state_floats); + + 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); } @@ -1294,26 +2078,26 @@ static ir_node *create_sub(const binary_expression_t *expression) static ir_node *create_shift(const binary_expression_t *expression) { - dbg_info *dbgi = get_dbg_info(&expression->expression.source_position); + 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->expression.datatype; + 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_Iu); + right = create_conv(dbgi, right, mode_uint); ir_node *res; - switch(expression->type) { - case BINEXPR_SHIFTLEFT_ASSIGN: - case BINEXPR_SHIFTLEFT: + switch(expression->base.kind) { + case EXPR_BINARY_SHIFTLEFT_ASSIGN: + case EXPR_BINARY_SHIFTLEFT: res = new_d_Shl(dbgi, left, right, mode); break; - case BINEXPR_SHIFTRIGHT_ASSIGN: - case BINEXPR_SHIFTRIGHT: { + case EXPR_BINARY_SHIFTRIGHT_ASSIGN: + case EXPR_BINARY_SHIFTRIGHT: { expression_t *expr_left = expression->left; - type_t *type_left = skip_typeref(expr_left->base.datatype); + type_t *type_left = skip_typeref(expr_left->base.type); if(is_type_signed(type_left)) { res = new_d_Shrs(dbgi, left, right, mode); @@ -1332,38 +2116,38 @@ static ir_node *create_shift(const binary_expression_t *expression) static ir_node *create_divmod(const binary_expression_t *expression) { - dbg_info *dbgi = get_dbg_info(&expression->expression.source_position); + 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.datatype; + 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; - switch (expression->type) { - case BINEXPR_DIV: - case BINEXPR_DIV_ASSIGN: - 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; + switch (expression->base.kind) { + case EXPR_BINARY_DIV: + case EXPR_BINARY_DIV_ASSIGN: + 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; - case BINEXPR_MOD: - case BINEXPR_MOD_ASSIGN: - 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; + case EXPR_BINARY_MOD: + case EXPR_BINARY_MOD_ASSIGN: + 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()"); + default: panic("unexpected binary expression type in create_divmod()"); } return res; @@ -1373,11 +2157,11 @@ static ir_node *create_arithmetic_assign_divmod( const binary_expression_t *expression) { ir_node * value = create_divmod(expression); - dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position); - type_t *const type = expression->expression.datatype; + 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->type != TYPE_POINTER); + assert(type->kind != TYPE_POINTER); value = create_conv(dbgi, value, mode); set_value_for_expression(expression->left, value); @@ -1389,8 +2173,8 @@ static ir_node *create_arithmetic_assign_shift( const binary_expression_t *expression) { ir_node * value = create_shift(expression); - dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position); - type_t *const type = expression->expression.datatype; + 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); value = create_conv(dbgi, value, mode); @@ -1401,69 +2185,79 @@ static ir_node *create_arithmetic_assign_shift( static ir_node *binary_expression_to_firm(const binary_expression_t *expression) { - binary_expression_type_t type = expression->type; - switch(type) { - case BINEXPR_EQUAL: - case BINEXPR_NOTEQUAL: - case BINEXPR_LESS: - case BINEXPR_LESSEQUAL: - case BINEXPR_GREATER: - case BINEXPR_GREATEREQUAL: { - dbg_info *dbgi = get_dbg_info(&expression->expression.source_position); + expression_kind_t kind = expression->base.kind; + + switch(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: { + dbg_info *dbgi = get_dbg_info(&expression->base.source_position); ir_node *left = expression_to_firm(expression->left); ir_node *right = expression_to_firm(expression->right); ir_node *cmp = new_d_Cmp(dbgi, left, right); - long pnc = get_pnc(type); + long pnc = get_pnc(kind, expression->left->base.type); ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc); return proj; } - case BINEXPR_ASSIGN: { + case EXPR_BINARY_ASSIGN: { ir_node *right = expression_to_firm(expression->right); set_value_for_expression(expression->left, right); return right; } - case BINEXPR_ADD: + case EXPR_BINARY_ADD: return create_add(expression); - case BINEXPR_SUB: + case EXPR_BINARY_SUB: return create_sub(expression); - case BINEXPR_MUL: + case EXPR_BINARY_MUL: return create_arithmetic_binop(expression, new_d_Mul); - case BINEXPR_BITWISE_AND: + case EXPR_BINARY_BITWISE_AND: return create_arithmetic_binop(expression, new_d_And); - case BINEXPR_BITWISE_OR: + case EXPR_BINARY_BITWISE_OR: return create_arithmetic_binop(expression, new_d_Or); - case BINEXPR_BITWISE_XOR: + case EXPR_BINARY_BITWISE_XOR: return create_arithmetic_binop(expression, new_d_Eor); - case BINEXPR_SHIFTLEFT: - case BINEXPR_SHIFTRIGHT: + case EXPR_BINARY_SHIFTLEFT: + case EXPR_BINARY_SHIFTRIGHT: return create_shift(expression); - case BINEXPR_DIV: - case BINEXPR_MOD: + case EXPR_BINARY_DIV: + case EXPR_BINARY_MOD: return create_divmod(expression); - case BINEXPR_LOGICAL_AND: - case BINEXPR_LOGICAL_OR: + case EXPR_BINARY_LOGICAL_AND: + case EXPR_BINARY_LOGICAL_OR: return create_lazy_op(expression); - case BINEXPR_COMMA: + case EXPR_BINARY_COMMA: expression_to_firm(expression->left); return expression_to_firm(expression->right); - case BINEXPR_ADD_ASSIGN: + case EXPR_BINARY_ADD_ASSIGN: return create_arithmetic_assign_binop(expression, new_d_Add); - case BINEXPR_SUB_ASSIGN: + case EXPR_BINARY_SUB_ASSIGN: return create_arithmetic_assign_binop(expression, new_d_Sub); - case BINEXPR_MUL_ASSIGN: + case EXPR_BINARY_MUL_ASSIGN: return create_arithmetic_assign_binop(expression, new_d_Mul); - case BINEXPR_DIV_ASSIGN: + case EXPR_BINARY_MOD_ASSIGN: + case EXPR_BINARY_DIV_ASSIGN: return create_arithmetic_assign_divmod(expression); - case BINEXPR_BITWISE_AND_ASSIGN: + case EXPR_BINARY_BITWISE_AND_ASSIGN: return create_arithmetic_assign_binop(expression, new_d_And); - case BINEXPR_BITWISE_OR_ASSIGN: + case EXPR_BINARY_BITWISE_OR_ASSIGN: return create_arithmetic_assign_binop(expression, new_d_Or); - case BINEXPR_BITWISE_XOR_ASSIGN: + case EXPR_BINARY_BITWISE_XOR_ASSIGN: return create_arithmetic_assign_binop(expression, new_d_Eor); - case BINEXPR_SHIFTLEFT_ASSIGN: - case BINEXPR_SHIFTRIGHT_ASSIGN: + case EXPR_BINARY_SHIFTLEFT_ASSIGN: + case EXPR_BINARY_SHIFTRIGHT_ASSIGN: return create_arithmetic_assign_shift(expression); + case EXPR_BINARY_BUILTIN_EXPECT: + return expression_to_firm(expression->left); default: panic("TODO binexpr type"); } @@ -1471,20 +2265,19 @@ static ir_node *binary_expression_to_firm(const binary_expression_t *expression) static ir_node *array_access_addr(const array_access_expression_t *expression) { - dbg_info *dbgi = get_dbg_info(&expression->expression.source_position); + 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_Iu); + offset = create_conv(dbgi, offset, mode_uint); - type_t *ref_type = skip_typeref(expression->array_ref->base.datatype); + type_t *ref_type = skip_typeref(expression->array_ref->base.type); assert(is_type_pointer(ref_type)); - pointer_type_t *pointer_type = (pointer_type_t*) ref_type; + pointer_type_t *pointer_type = &ref_type->pointer; - unsigned elem_size = get_type_size(pointer_type->points_to); - ir_node *elem_size_const = new_Const_long(mode_Iu, elem_size); + ir_node *elem_size_const = get_type_size(pointer_type->points_to); ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const, - mode_Iu); - ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P); + mode_uint); + ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data); return result; } @@ -1492,34 +2285,187 @@ static ir_node *array_access_addr(const array_access_expression_t *expression) static ir_node *array_access_to_firm( const array_access_expression_t *expression) { - dbg_info *dbgi = get_dbg_info(&expression->expression.source_position); + dbg_info *dbgi = get_dbg_info(&expression->base.source_position); ir_node *addr = array_access_addr(expression); 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(type, addr, dbgi); +} + +static long get_offsetof_offset(const offsetof_expression_t *expression) +{ + type_t *orig_type = expression->type; + long offset = 0; + + designator_t *designator = expression->designator; + for( ; designator != NULL; designator = designator->next) { + type_t *type = skip_typeref(orig_type); + /* be sure the type is constructed */ + (void) get_ir_type(type); + + if(designator->symbol != NULL) { + 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) { + break; + } + } + assert(iter != NULL); + + assert(iter->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER); + offset += get_entity_offset(iter->v.entity); + + orig_type = iter->type; + } else { + expression_t *array_index = designator->array_index; + assert(designator->array_index != NULL); + assert(is_type_array(type)); + assert(is_type_valid(array_index->base.type)); + + long index = fold_constant(array_index); + ir_type *arr_type = get_ir_type(type); + ir_type *elem_type = get_array_element_type(arr_type); + long elem_size = get_type_size_bytes(elem_type); + + offset += index * elem_size; + + orig_type = type->array.element_type; + } + } + + return offset; +} + +static ir_node *offsetof_to_firm(const offsetof_expression_t *expression) +{ + ir_mode *mode = get_ir_mode(expression->base.type); + long offset = get_offsetof_offset(expression); + tarval *tv = new_tarval_from_long(offset, mode); + dbg_info *dbgi = get_dbg_info(&expression->base.source_position); + + return new_d_Const(dbgi, mode, tv); +} + +static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi, + ir_entity *entity, type_t *type); + +static ir_node *compound_literal_to_firm( + const compound_literal_expression_t *expression) +{ + type_t *type = expression->type; + + /* create an entity on the stack */ + ir_type *frame_type = get_irg_frame_type(current_ir_graph); + + ident *const id = unique_ident("CompLit"); + 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); + set_entity_ld_ident(entity, id); + + set_entity_variability(entity, variability_uninitialized); + + /* create initialisation code */ + initializer_t *initializer = expression->initializer; + create_local_initializer(initializer, dbgi, entity, type); + + /* create a sel for the compound literal address */ + ir_node *frame = get_local_frame(entity); + ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity); + return sel; +} + +/** + * Transform a sizeof expression into Firm code. + */ +static ir_node *sizeof_to_firm(const typeprop_expression_t *expression) +{ + type_t *type = expression->type; + if(type == NULL) { + type = expression->tp_expression->base.type; + assert(type != NULL); + } + + type = skip_typeref(type); + /* § 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */ + if(is_type_array(type) && type->array.is_vla + && expression->tp_expression != NULL) { + expression_to_firm(expression->tp_expression); + } + + return get_type_size(type); } -static ir_node *sizeof_to_firm(const sizeof_expression_t *expression) +/** + * Transform an alignof expression into Firm code. + */ +static ir_node *alignof_to_firm(const typeprop_expression_t *expression) { type_t *type = expression->type; if(type == NULL) { - type = expression->size_expression->base.datatype; + /* beware: if expression is a variable reference, return the + alignment of the variable. */ + const expression_t *tp_expression = expression->tp_expression; + const declaration_t *declaration = expr_is_variable(tp_expression); + if (declaration != NULL) { + /* TODO: get the alignment of this variable. */ + } + type = tp_expression->base.type; assert(type != NULL); } - ir_mode *mode = get_ir_mode(expression->expression.datatype); - unsigned size = get_type_size(type); - ir_node *size_node = new_Const_long(mode, size); + ir_mode *const mode = get_ir_mode(expression->base.type); + symconst_symbol sym; + sym.type_p = get_ir_type(type); + return new_SymConst(mode, sym, symconst_type_align); +} + +static void init_ir_types(void); +long fold_constant(const expression_t *expression) +{ + init_ir_types(); + + assert(is_constant_expression(expression)); + + ir_graph *old_current_ir_graph = current_ir_graph; + 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)) { + panic("couldn't fold constant\n"); + } + + tarval *tv = get_Const_tarval(cnst); + if(!tarval_is_long(tv)) { + panic("result of constant folding is not integer\n"); + } - return size_node; + return get_tarval_long(tv); } static ir_node *conditional_to_firm(const conditional_expression_t *expression) { - dbg_info *dbgi = get_dbg_info(&expression->expression.source_position); + dbg_info *const dbgi = get_dbg_info(&expression->base.source_position); + + /* first try to fold a constant condition */ + if(is_constant_expression(expression->condition)) { + long val = fold_constant(expression->condition); + if(val) { + return expression_to_firm(expression->true_expression); + } else { + return expression_to_firm(expression->false_expression); + } + } ir_node *cur_block = get_cur_block(); @@ -1561,12 +2507,12 @@ static ir_node *conditional_to_firm(const conditional_expression_t *expression) static ir_node *select_addr(const select_expression_t *expression) { - dbg_info *dbgi = get_dbg_info(&expression->expression.source_position); + dbg_info *dbgi = get_dbg_info(&expression->base.source_position); ir_node *compound_addr = expression_to_firm(expression->compound); declaration_t *entry = expression->compound_entry; - assert(entry->declaration_type == DECLARATION_TYPE_COMPOUND_MEMBER); + assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER); ir_entity *entity = entry->v.entity; assert(entity != NULL); @@ -1578,14 +2524,13 @@ 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->expression.source_position); + 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); - return deref_address(irtype, addr, dbgi); + return deref_address(type, addr, dbgi); } /* Values returned by __builtin_classify_type. */ @@ -1615,27 +2560,27 @@ 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.datatype; + const type_t *const type = skip_typeref(expr->type_expression->base.type); gcc_type_class tc; - switch (type->type) + switch (type->kind) { case TYPE_ATOMIC: { const atomic_type_t *const atomic_type = &type->atomic; - switch (atomic_type->atype) { - // should not be reached + switch ((atomic_type_kind_t) atomic_type->akind) { + /* should not be reached */ case ATOMIC_TYPE_INVALID: tc = no_type_class; - break; + goto make_const; - // gcc cannot do that + /* 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 - case ATOMIC_TYPE_UCHAR: // gcc handles this as integer + case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */ + case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */ + case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */ case ATOMIC_TYPE_SHORT: case ATOMIC_TYPE_USHORT: case ATOMIC_TYPE_INT: @@ -1644,73 +2589,90 @@ static ir_node *classify_type_to_firm(const classify_type_expression_t *const ex case ATOMIC_TYPE_ULONG: case ATOMIC_TYPE_LONGLONG: case ATOMIC_TYPE_ULONGLONG: - case ATOMIC_TYPE_BOOL: // gcc handles this as integer + 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; + goto make_const; -#ifdef PROVIDE_COMPLEX case ATOMIC_TYPE_FLOAT_COMPLEX: case ATOMIC_TYPE_DOUBLE_COMPLEX: case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX: tc = complex_type_class; - break; + goto make_const; 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_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; - - // gcc handles this as integer - case TYPE_ENUM: tc = integer_type_class; break; - - default: - panic("Unimplemented case in classify_type_to_firm()."); + case TYPE_BITFIELD: tc = integer_type_class; goto make_const; + case TYPE_ARRAY: /* gcc handles this as pointer */ + case TYPE_FUNCTION: /* gcc handles this as pointer */ + case TYPE_POINTER: tc = pointer_type_class; goto make_const; + case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const; + case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const; + + /* gcc handles this as integer */ + case TYPE_ENUM: tc = integer_type_class; goto make_const; + + case TYPE_BUILTIN: + /* typedef/typeof should be skipped already */ + case TYPE_TYPEDEF: + case TYPE_TYPEOF: + case TYPE_INVALID: + case TYPE_ERROR: + break; } + panic("unexpected TYPE classify_type_to_firm()."); - dbg_info *const dbgi = get_dbg_info(&expr->expression.source_position); - ir_mode *const mode = mode_Is; +make_const: ; + dbg_info *const dbgi = get_dbg_info(&expr->base.source_position); + ir_mode *const mode = mode_int; tarval *const tv = new_tarval_from_long(tc, mode); return new_d_Const(dbgi, mode, tv); } static ir_node *function_name_to_firm( - const string_literal_expression_t *const expr) + const funcname_expression_t *const expr) { - if (current_function_name == NULL) { - const source_position_t *const src_pos = - &expr->expression.source_position; - const char *const name = current_function_decl->symbol->string; - current_function_name = string_to_firm(src_pos, "__func__", name); + 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__", &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__", &string); + } + return current_funcsig; } - - return current_function_name; + panic("Unsupported function name"); } static ir_node *statement_expression_to_firm(const statement_expression_t *expr) { statement_t *statement = expr->statement; - assert(statement->type == STATEMENT_COMPOUND); - return compound_statement_to_firm((compound_statement_t*) statement); + assert(statement->kind == STATEMENT_COMPOUND); + return compound_statement_to_firm(&statement->compound); } static ir_node *va_start_expression_to_firm( @@ -1720,14 +2682,12 @@ static ir_node *va_start_expression_to_firm( int const n = get_method_n_params(method_type) - 1; ir_entity *const parm_ent = get_method_value_param_ent(method_type, n); ir_node *const arg_base = get_irg_value_param_base(current_ir_graph); - dbg_info *const dbgi = - get_dbg_info(&expr->expression.source_position); + dbg_info *const dbgi = get_dbg_info(&expr->base.source_position); ir_node *const no_mem = new_NoMem(); ir_node *const arg_sel = new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent); - size_t const parm_size = get_type_size(expr->parameter->type); - ir_node *const cnst = new_Const_long(mode_Iu, parm_size); + ir_node *const cnst = get_type_size(expr->parameter->type); ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data); set_value_for_expression(expr->ap, add); @@ -1736,14 +2696,13 @@ 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->expression.datatype); + type_t *const type = expr->base.type; ir_node *const ap = expression_to_firm(expr->ap); - dbg_info *const dbgi = get_dbg_info(&expr->expression.source_position); - ir_node *const res = deref_address(irtype, ap, dbgi); + dbg_info *const dbgi = get_dbg_info(&expr->base.source_position); + ir_node *const res = deref_address(type, ap, dbgi); - size_t const parm_size = get_type_size(expr->expression.datatype); - ir_node *const cnst = new_Const_long(mode_Iu, parm_size); - ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data); + 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); return res; @@ -1751,13 +2710,13 @@ static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr) static ir_node *dereference_addr(const unary_expression_t *const expression) { - assert(expression->type == UNEXPR_DEREFERENCE); + assert(expression->base.kind == EXPR_UNARY_DEREFERENCE); return expression_to_firm(expression->value); } static ir_node *expression_to_addr(const expression_t *expression) { - switch(expression->type) { + switch(expression->kind) { case EXPR_REFERENCE: return reference_addr(&expression->reference); case EXPR_ARRAY_ACCESS: @@ -1766,12 +2725,8 @@ static ir_node *expression_to_addr(const expression_t *expression) return select_addr(&expression->select); case EXPR_CALL: return call_expression_to_firm(&expression->call); - case EXPR_UNARY: { - const unary_expression_t *const unary_expr = &expression->unary; - if (unary_expr->type == UNEXPR_DEREFERENCE) { - return dereference_addr(unary_expr); - } - break; + case EXPR_UNARY_DEREFERENCE: { + return dereference_addr(&expression->unary); } default: break; @@ -1779,9 +2734,36 @@ static ir_node *expression_to_addr(const expression_t *expression) panic("trying to get address of non-lvalue"); } +static ir_node *builtin_constant_to_firm( + const builtin_constant_expression_t *expression) +{ + ir_mode *mode = get_ir_mode(expression->base.type); + long v; + + if (is_constant_expression(expression->value)) { + v = 1; + } else { + v = 0; + } + return new_Const_long(mode, v); +} + +static ir_node *builtin_prefetch_to_firm( + const builtin_prefetch_expression_t *expression) +{ + ir_node *adr = expression_to_firm(expression->adr); + /* no Firm support for prefetch yet */ + (void) adr; + return NULL; +} + static ir_node *_expression_to_firm(const expression_t *expression) { - switch(expression->type) { + switch(expression->kind) { + case EXPR_CHARACTER_CONSTANT: + return character_constant_to_firm(&expression->conste); + case EXPR_WIDE_CHARACTER_CONSTANT: + return wide_character_constant_to_firm(&expression->conste); case EXPR_CONST: return const_to_firm(&expression->conste); case EXPR_STRING_LITERAL: @@ -1792,32 +2774,40 @@ static ir_node *_expression_to_firm(const expression_t *expression) return reference_expression_to_firm(&expression->reference); case EXPR_CALL: return call_expression_to_firm(&expression->call); - case EXPR_UNARY: + EXPR_UNARY_CASES return unary_expression_to_firm(&expression->unary); - case EXPR_BINARY: + EXPR_BINARY_CASES return binary_expression_to_firm(&expression->binary); case EXPR_ARRAY_ACCESS: return array_access_to_firm(&expression->array_access); case EXPR_SIZEOF: - return sizeof_to_firm(&expression->sizeofe); + return sizeof_to_firm(&expression->typeprop); + case EXPR_ALIGNOF: + return alignof_to_firm(&expression->typeprop); case EXPR_CONDITIONAL: return conditional_to_firm(&expression->conditional); case EXPR_SELECT: 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: return va_start_expression_to_firm(&expression->va_starte); case EXPR_VA_ARG: return va_arg_expression_to_firm(&expression->va_arge); - case EXPR_OFFSETOF: case EXPR_BUILTIN_SYMBOL: panic("unimplemented expression found"); + case EXPR_BUILTIN_CONSTANT_P: + return builtin_constant_to_firm(&expression->builtin_constant); + case EXPR_BUILTIN_PREFETCH: + return builtin_prefetch_to_firm(&expression->builtin_prefetch); + case EXPR_OFFSETOF: + return offsetof_to_firm(&expression->offsetofe); + case EXPR_COMPOUND_LITERAL: + return compound_literal_to_firm(&expression->compound_literal); case EXPR_UNKNOWN: case EXPR_INVALID: @@ -1831,8 +2821,18 @@ static ir_node *expression_to_firm(const expression_t *expression) ir_node *res = _expression_to_firm(expression); if(res != NULL && get_irn_mode(res) == mode_b) { - ir_mode *mode = get_ir_mode(expression->base.datatype); - res = create_conv(NULL, res, mode); + 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); + } + } + + dbg_info *dbgi = get_dbg_info(&expression->base.source_position); + return produce_condition_result(expression, dbgi); } return res; @@ -1854,44 +2854,40 @@ static void create_condition_evaluation(const expression_t *expression, ir_node *true_block, ir_node *false_block) { - switch(expression->type) { - case EXPR_UNARY: { - unary_expression_t *unary_expression = (unary_expression_t*) expression; - if(unary_expression->type == UNEXPR_NOT) { - create_condition_evaluation(unary_expression->value, false_block, - true_block); - return; - } - break; + switch(expression->kind) { + case EXPR_UNARY_NOT: { + const unary_expression_t *unary_expression = &expression->unary; + create_condition_evaluation(unary_expression->value, false_block, + true_block); + return; } - case EXPR_BINARY: { - binary_expression_t *binary_expression - = (binary_expression_t*) expression; - if(binary_expression->type == BINEXPR_LOGICAL_AND) { - ir_node *cur_block = get_cur_block(); - ir_node *extra_block = new_immBlock(); - set_cur_block(cur_block); - create_condition_evaluation(binary_expression->left, extra_block, - false_block); - mature_immBlock(extra_block); - set_cur_block(extra_block); - create_condition_evaluation(binary_expression->right, true_block, - false_block); - return; - } - if(binary_expression->type == BINEXPR_LOGICAL_OR) { - ir_node *cur_block = get_cur_block(); - ir_node *extra_block = new_immBlock(); - set_cur_block(cur_block); - create_condition_evaluation(binary_expression->left, true_block, - extra_block); - mature_immBlock(extra_block); - set_cur_block(extra_block); - create_condition_evaluation(binary_expression->right, true_block, - false_block); - return; - } - break; + case EXPR_BINARY_LOGICAL_AND: { + const binary_expression_t *binary_expression = &expression->binary; + + ir_node *cur_block = get_cur_block(); + ir_node *extra_block = new_immBlock(); + set_cur_block(cur_block); + create_condition_evaluation(binary_expression->left, extra_block, + false_block); + mature_immBlock(extra_block); + set_cur_block(extra_block); + create_condition_evaluation(binary_expression->right, true_block, + false_block); + return; + } + case EXPR_BINARY_LOGICAL_OR: { + const binary_expression_t *binary_expression = &expression->binary; + + ir_node *cur_block = get_cur_block(); + ir_node *extra_block = new_immBlock(); + set_cur_block(cur_block); + create_condition_evaluation(binary_expression->left, true_block, + extra_block); + mature_immBlock(extra_block); + set_cur_block(extra_block); + create_condition_evaluation(binary_expression->right, true_block, + false_block); + return; } default: break; @@ -1903,34 +2899,746 @@ static void create_condition_evaluation(const expression_t *expression, ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true); ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false); + /* set branch prediction info based on __builtin_expect */ + if(expression->kind == EXPR_BINARY_BUILTIN_EXPECT) { + long cnst = fold_constant(expression->binary.right); + cond_jmp_predicate pred; + + if(cnst == 0) { + pred = COND_JMP_PRED_FALSE; + } else { + pred = COND_JMP_PRED_TRUE; + } + set_Cond_jmp_pred(cond, pred); + } + add_immBlock_pred(true_block, true_proj); add_immBlock_pred(false_block, false_proj); set_cur_block(NULL); } -static void return_statement_to_firm(return_statement_t *statement) + + +static void create_declaration_entity(declaration_t *declaration, + declaration_kind_t declaration_kind, + ir_type *parent_type) { - if(get_cur_block() == NULL) - return; + ident *const id = new_id_from_str(declaration->symbol->string); + type_t *const type = skip_typeref(declaration->type); + ir_type *const irtype = get_ir_type(type); + dbg_info *const dbgi = get_dbg_info(&declaration->source_position); + ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi); + set_entity_ld_ident(entity, id); - ir_type *func_irtype = get_ir_type(current_function_decl->type); + 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_allocation(entity, allocation_automatic); + else if(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE) + set_entity_allocation(entity, allocation_static); - dbg_info *dbgi = get_dbg_info(&statement->statement.source_position); + if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) { + set_entity_volatility(entity, volatility_is_volatile); + } +} - ir_node *in[1]; - int in_len; - if(get_method_n_ress(func_irtype) > 0) { - ir_type *res_type = get_method_res_type(func_irtype, 0); - if(statement->return_value != NULL) { - ir_node *node = expression_to_firm(statement->return_value); - node = do_strict_conv(dbgi, node); - in[0] = node; +typedef struct type_path_entry_t type_path_entry_t; +struct type_path_entry_t { + type_t *type; + ir_initializer_t *initializer; + size_t index; + declaration_t *compound_entry; +}; + +typedef struct type_path_t type_path_t; +struct type_path_t { + type_path_entry_t *path; + type_t *top_type; + bool invalid; +}; + +static __attribute__((unused)) void debug_print_type_path(const type_path_t *path) +{ + size_t len = ARR_LEN(path->path); + + for(size_t i = 0; i < len; ++i) { + const type_path_entry_t *entry = & path->path[i]; + + type_t *type = skip_typeref(entry->type); + if(is_type_compound(type)) { + fprintf(stderr, ".%s", entry->compound_entry->symbol->string); + } else if(is_type_array(type)) { + fprintf(stderr, "[%zd]", entry->index); } else { - ir_mode *mode; - if(is_compound_type(res_type)) { - mode = mode_P_data; + fprintf(stderr, "-INVALID-"); + } + } + fprintf(stderr, " ("); + print_type(path->top_type); + fprintf(stderr, ")"); +} + +static type_path_entry_t *get_type_path_top(const type_path_t *path) +{ + size_t len = ARR_LEN(path->path); + assert(len > 0); + return & path->path[len-1]; +} + +static type_path_entry_t *append_to_type_path(type_path_t *path) +{ + size_t len = ARR_LEN(path->path); + ARR_RESIZE(type_path_entry_t, path->path, len+1); + + type_path_entry_t *result = & path->path[len]; + memset(result, 0, sizeof(result[0])); + return result; +} + +static size_t get_compound_size(const compound_type_t *type) +{ + declaration_t *declaration = type->declaration; + declaration_t *member = declaration->scope.declarations; + size_t size = 0; + for( ; member != NULL; member = member->next) { + ++size; + } + /* TODO: cache results? */ + + return size; +} + +static ir_initializer_t *get_initializer_entry(type_path_t *path) +{ + type_t *orig_top_type = path->top_type; + type_t *top_type = skip_typeref(orig_top_type); + + assert(is_type_compound(top_type) || is_type_array(top_type)); + + if(ARR_LEN(path->path) == 0) { + return NULL; + } else { + type_path_entry_t *top = get_type_path_top(path); + ir_initializer_t *initializer = top->initializer; + return get_initializer_compound_value(initializer, top->index); + } +} + +static void descend_into_subtype(type_path_t *path) +{ + type_t *orig_top_type = path->top_type; + type_t *top_type = skip_typeref(orig_top_type); + + assert(is_type_compound(top_type) || is_type_array(top_type)); + + ir_initializer_t *initializer = get_initializer_entry(path); + + type_path_entry_t *top = append_to_type_path(path); + top->type = top_type; + + size_t len; + + 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) + path->top_type = entry->type; + } else { + assert(is_type_array(top_type)); + assert(top_type->array.size > 0); + + top->index = 0; + path->top_type = top_type->array.element_type; + len = top_type->array.size; + } + 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) { + type_path_entry_t *entry = & path->path[path_len-2]; + ir_initializer_t *tinitializer = entry->initializer; + set_initializer_compound_value(tinitializer, entry->index, + initializer); + } + } + top->initializer = initializer; +} + +static void ascend_from_subtype(type_path_t *path) +{ + type_path_entry_t *top = get_type_path_top(path); + + path->top_type = top->type; + + size_t len = ARR_LEN(path->path); + ARR_RESIZE(type_path_entry_t, path->path, len-1); +} + +static void walk_designator(type_path_t *path, const designator_t *designator) +{ + /* designators start at current object type */ + ARR_RESIZE(type_path_entry_t, path->path, 1); + + for( ; designator != NULL; designator = designator->next) { + type_path_entry_t *top = get_type_path_top(path); + type_t *orig_type = top->type; + type_t *type = skip_typeref(orig_type); + + if(designator->symbol != NULL) { + assert(is_type_compound(type)); + size_t index = 0; + symbol_t *symbol = designator->symbol; + + declaration_t *declaration = type->compound.declaration; + declaration_t *iter = declaration->scope.declarations; + for( ; iter != NULL; iter = iter->next, ++index) { + if(iter->symbol == symbol) { + break; + } + } + assert(iter != NULL); + + top->type = orig_type; + top->compound_entry = iter; + top->index = index; + orig_type = iter->type; + } else { + expression_t *array_index = designator->array_index; + assert(designator->array_index != NULL); + assert(is_type_array(type)); + assert(is_type_valid(array_index->base.type)); + + long index = fold_constant(array_index); + assert(index >= 0); +#ifndef NDEBUG + if(type->array.size_constant == 1) { + long array_size = type->array.size; + assert(index < array_size); + } +#endif + + top->type = orig_type; + top->index = (size_t) index; + orig_type = type->array.element_type; + } + path->top_type = orig_type; + + if(designator->next != NULL) { + descend_into_subtype(path); + } + } + + path->invalid = false; +} + +static void advance_current_object(type_path_t *path) +{ + if(path->invalid) { + /* TODO: handle this... */ + panic("invalid initializer in ast2firm (excessive elements)"); + return; + } + + type_path_entry_t *top = get_type_path_top(path); + + type_t *type = skip_typeref(top->type); + if(is_type_union(type)) { + top->compound_entry = NULL; + } else if(is_type_struct(type)) { + declaration_t *entry = top->compound_entry; + + top->index++; + entry = entry->next; + top->compound_entry = entry; + if(entry != NULL) { + path->top_type = entry->type; + return; + } + } else { + assert(is_type_array(type)); + + top->index++; + if(!type->array.size_constant || top->index < type->array.size) { + return; + } + } + + /* we're past the last member of the current sub-aggregate, try if we + * can ascend in the type hierarchy and continue with another subobject */ + size_t len = ARR_LEN(path->path); + + if(len > 1) { + ascend_from_subtype(path); + advance_current_object(path); + } else { + path->invalid = true; + } +} + + +static ir_initializer_t *create_ir_initializer( + const initializer_t *initializer, type_t *type); + +static ir_initializer_t *create_ir_initializer_value( + const initializer_value_t *initializer) +{ + ir_node *value = expression_to_firm(initializer->value); + return create_initializer_const(value); +} + +static ir_initializer_t *create_ir_initializer_list( + const initializer_list_t *initializer, type_t *type) +{ + type_path_t path; + memset(&path, 0, sizeof(path)); + path.top_type = type; + path.path = NEW_ARR_F(type_path_entry_t, 0); + + descend_into_subtype(&path); + + for(size_t i = 0; i < initializer->len; ++i) { + const initializer_t *sub_initializer = initializer->initializers[i]; + + if(sub_initializer->kind == INITIALIZER_DESIGNATOR) { + walk_designator(&path, sub_initializer->designator.designator); + continue; + } + + 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)) + break; + descend_into_subtype(&path); + } + } + + ir_initializer_t *sub_irinitializer + = create_ir_initializer(sub_initializer, path.top_type); + + size_t path_len = ARR_LEN(path.path); + assert(path_len >= 1); + type_path_entry_t *entry = & path.path[path_len-1]; + ir_initializer_t *tinitializer = entry->initializer; + set_initializer_compound_value(tinitializer, entry->index, + sub_irinitializer); + + advance_current_object(&path); + } + + assert(ARR_LEN(path.path) >= 1); + ir_initializer_t *result = path.path[0].initializer; + DEL_ARR_F(path.path); + + return result; +} + +static ir_initializer_t *create_ir_initializer_string( + const initializer_string_t *initializer, type_t *type) +{ + type = skip_typeref(type); + + size_t string_len = initializer->string.size; + assert(type->kind == TYPE_ARRAY && type->array.size_constant); + size_t len = type->array.size; + ir_initializer_t *irinitializer = create_initializer_compound(len); + + const char *string = initializer->string.begin; + ir_mode *mode = get_type_mode(ir_type_const_char); + + for(size_t i = 0; i < len; ++i) { + char c = 0; + if(i < string_len) + c = string[i]; + + tarval *tv = new_tarval_from_long(string[i], mode); + ir_initializer_t *char_initializer = create_initializer_tarval(tv); + + set_initializer_compound_value(irinitializer, i, char_initializer); + } + + return irinitializer; +} + +static ir_initializer_t *create_ir_initializer_wide_string( + const initializer_wide_string_t *initializer, type_t *type) +{ + size_t string_len = initializer->string.size; + assert(type->kind == TYPE_ARRAY && type->array.size_constant); + size_t len = type->array.size; + ir_initializer_t *irinitializer = create_initializer_compound(len); + + const wchar_rep_t *string = initializer->string.begin; + ir_mode *mode = get_type_mode(ir_type_wchar_t); + + for(size_t i = 0; i < len; ++i) { + wchar_rep_t c = 0; + if(i < string_len) { + c = string[i]; + } + tarval *tv = new_tarval_from_long(string[i], mode); + ir_initializer_t *char_initializer = create_initializer_tarval(tv); + + set_initializer_compound_value(irinitializer, i, char_initializer); + } + + return irinitializer; +} + +static ir_initializer_t *create_ir_initializer( + const initializer_t *initializer, type_t *type) +{ + switch(initializer->kind) { + case INITIALIZER_STRING: + return create_ir_initializer_string(&initializer->string, type); + + case INITIALIZER_WIDE_STRING: + return create_ir_initializer_wide_string(&initializer->wide_string, + type); + + case INITIALIZER_LIST: + return create_ir_initializer_list(&initializer->list, type); + + case INITIALIZER_VALUE: + return create_ir_initializer_value(&initializer->value); + + case INITIALIZER_DESIGNATOR: + panic("unexpected designator initializer found"); + } + panic("unknown initializer"); +} + +static void create_dynamic_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: { + /* TODO: implement this for compound types... */ + assert(type != NULL); + + ir_mode *mode = get_type_mode(type); + tarval *zero = get_mode_null(mode); + ir_node *cnst = new_d_Const(dbgi, mode, zero); + + /* TODO: bitfields */ + ir_node *mem = get_store(); + ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst); + ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M); + set_store(proj_m); + return; + } + case IR_INITIALIZER_CONST: { + ir_node *node = get_initializer_const_value(initializer); + ir_mode *mode = get_irn_mode(node); + assert(get_type_mode(type) == mode); + + /* TODO: bitfields... */ + ir_node *mem = get_store(); + ir_node *store = new_d_Store(dbgi, mem, base_addr, node); + ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M); + set_store(proj_m); + return; + } + case IR_INITIALIZER_TARVAL: { + tarval *tv = get_initializer_tarval_value(initializer); + ir_mode *mode = get_tarval_mode(tv); + ir_node *cnst = new_d_Const(dbgi, mode, tv); + assert(get_type_mode(type) == mode); + + /* TODO: bitfields... */ + ir_node *mem = get_store(); + ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst); + ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M); + set_store(proj_m); + return; + } + case IR_INITIALIZER_COMPOUND: { + 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); + } + + if(get_initializer_compound_n_entries(initializer) + != (unsigned) n_members) + panic("initializer doesn't match compound type"); + + for(int i = 0; i < n_members; ++i) { + ir_node *addr; + ir_type *irtype; + if(is_Array_type(type)) { + ir_entity *entity = get_array_element_entity(type); + tarval *index_tv = new_tarval_from_long(i, mode_uint); + ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv); + ir_node *in[1] = { cnst }; + irtype = get_array_element_type(type); + addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity); + } else { + ir_entity *member = get_compound_member(type, i); + + irtype = get_entity_type(member); + addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member); + } + + ir_initializer_t *sub_init + = get_initializer_compound_value(initializer, i); + + create_dynamic_initializer_sub(sub_init, irtype, dbgi, addr); + } + return; + } + } + + panic("invalid IR_INITIALIZER found"); +} + +static void create_dynamic_initializer(ir_initializer_t *initializer, + dbg_info *dbgi, ir_entity *entity) +{ + ir_node *frame = get_local_frame(entity); + ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity); + ir_type *type = get_entity_type(entity); + + create_dynamic_initializer_sub(initializer, type, dbgi, base_addr); +} + +static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi, + ir_entity *entity, type_t *type) +{ + ir_node *memory = get_store(); + ir_node *nomem = new_NoMem(); + ir_node *frame = get_irg_frame(current_ir_graph); + ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity); + + if(initializer->kind == INITIALIZER_VALUE) { + initializer_value_t *initializer_value = &initializer->value; + + ir_node *value = expression_to_firm(initializer_value->value); + type = skip_typeref(type); + assign_value(dbgi, addr, type, value); + return; + } + + if(!is_constant_initializer(initializer)) { + ir_initializer_t *irinitializer + = create_ir_initializer(initializer, type); + + create_dynamic_initializer(irinitializer, dbgi, entity); + return; + } + + /* create the ir_initializer */ + ir_graph *const old_current_ir_graph = current_ir_graph; + current_ir_graph = get_const_code_irg(); + + ir_initializer_t *irinitializer = create_ir_initializer(initializer, type); + + assert(current_ir_graph == get_const_code_irg()); + 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"); + 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); + set_entity_ld_ident(init_entity, id); + + set_entity_variability(init_entity, variability_initialized); + set_entity_visibility(init_entity, visibility_local); + set_entity_allocation(init_entity, allocation_static); + + set_entity_initializer(init_entity, irinitializer); + + ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity); + ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype); + + ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular); + set_store(copyb_mem); +} + +static void create_initializer_local_variable_entity(declaration_t *declaration) +{ + initializer_t *initializer = declaration->init.initializer; + dbg_info *dbgi = get_dbg_info(&declaration->source_position); + ir_entity *entity = declaration->v.entity; + type_t *type = declaration->type; + create_local_initializer(initializer, dbgi, entity, type); +} + +static void create_declaration_initializer(declaration_t *declaration) +{ + initializer_t *initializer = declaration->init.initializer; + if(initializer == NULL) + return; + + declaration_kind_t declaration_kind + = (declaration_kind_t) declaration->declaration_kind; + if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) { + create_initializer_local_variable_entity(declaration); + return; + } + + if(initializer->kind == INITIALIZER_VALUE) { + initializer_value_t *initializer_value = &initializer->value; + + ir_node *value = expression_to_firm(initializer_value->value); + + 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); + set_atomic_ent_value(entity, value); + } + } else { + assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY + || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE); + + ir_entity *entity = declaration->v.entity; + ir_initializer_t *irinitializer + = create_ir_initializer(initializer, declaration->type); + + set_entity_variability(entity, variability_initialized); + set_entity_initializer(entity, irinitializer); + } +} + +static void create_variable_length_array(declaration_t *declaration) +{ + 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 *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc); + + ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M); + ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res); + set_store(proj_m); + + /* initializers are not allowed for VLAs */ + assert(declaration->init.initializer == NULL); + + declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY; + declaration->v.vla_base = addr; + + /* TODO: record VLA somewhere so we create the free node when we leave + * it's scope */ +} + +/** + * Creates a Firm local variable from a declaration. + */ +static void create_local_variable(declaration_t *declaration) +{ + assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN); + + bool needs_entity = declaration->address_taken; + type_t *type = skip_typeref(declaration->type); + + /* is it a variable length array? */ + 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)) { + needs_entity = true; + } else if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) { + needs_entity = true; + } + + if(needs_entity) { + ir_type *frame_type = get_irg_frame_type(current_ir_graph); + create_declaration_entity(declaration, + DECLARATION_KIND_LOCAL_VARIABLE_ENTITY, + frame_type); + } else { + declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE; + declaration->v.value_number = next_value_number_function; + set_irg_loc_description(current_ir_graph, next_value_number_function, declaration); + ++next_value_number_function; + } + + create_declaration_initializer(declaration); +} + +static void create_local_static_variable(declaration_t *declaration) +{ + assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN); + + 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); + 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_variability(entity, variability_uninitialized); + set_entity_visibility(entity, visibility_local); + set_entity_allocation(entity, allocation_static); + + ir_graph *const old_current_ir_graph = current_ir_graph; + current_ir_graph = get_const_code_irg(); + + create_declaration_initializer(declaration); + + assert(current_ir_graph == get_const_code_irg()); + current_ir_graph = old_current_ir_graph; +} + + + +static void return_statement_to_firm(return_statement_t *statement) +{ + if(get_cur_block() == NULL) + return; + + dbg_info *dbgi = get_dbg_info(&statement->base.source_position); + ir_type *func_irtype = get_ir_type(current_function_decl->type); + + + ir_node *in[1]; + int in_len; + if(get_method_n_ress(func_irtype) > 0) { + ir_type *res_type = get_method_res_type(func_irtype, 0); + + 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)) { + mode = mode_P_data; } else { mode = get_type_mode(res_type); } @@ -1939,8 +3647,8 @@ static void return_statement_to_firm(return_statement_t *statement) in_len = 1; } else { /* build return_value for its side effects */ - if(statement->return_value != NULL) { - expression_to_firm(statement->return_value); + if(statement->value != NULL) { + expression_to_firm(statement->value); } in_len = 0; } @@ -1964,21 +3672,124 @@ static ir_node *expression_statement_to_firm(expression_statement_t *statement) static ir_node *compound_statement_to_firm(compound_statement_t *compound) { - ir_node *result = NULL; - statement_t *statement = compound->statements; - for( ; statement != NULL; statement = statement->base.next) { - //context2firm(&statement->context); + ir_node *result = NULL; + statement_t *statement = compound->statements; + for( ; statement != NULL; statement = statement->base.next) { + //context2firm(&statement->scope); + + if(statement->base.next == NULL + && statement->kind == STATEMENT_EXPRESSION) { + result = expression_statement_to_firm( + &statement->expression); + break; + } + statement_to_firm(statement); + } + + return result; +} + +static void create_global_variable(declaration_t *declaration) +{ + ir_visibility vis; + ir_type *var_type; + switch ((storage_class_tag_t)declaration->storage_class) { + case STORAGE_CLASS_STATIC: + vis = visibility_local; + goto global_var; + + case STORAGE_CLASS_EXTERN: + vis = visibility_external_allocated; + goto global_var; + + case STORAGE_CLASS_NONE: + vis = visibility_external_visible; + goto global_var; + + case STORAGE_CLASS_THREAD: + vis = visibility_external_visible; + goto tls_var; + + case STORAGE_CLASS_THREAD_EXTERN: + vis = visibility_external_allocated; + goto tls_var; + + case STORAGE_CLASS_THREAD_STATIC: + vis = visibility_local; + goto tls_var; + +tls_var: + var_type = get_tls_type(); + goto create_var; + +global_var: + var_type = get_glob_type(); + goto create_var; + +create_var: + create_declaration_entity(declaration, + DECLARATION_KIND_GLOBAL_VARIABLE, + var_type); + set_entity_visibility(declaration->v.entity, vis); + + return; + + case STORAGE_CLASS_TYPEDEF: + case STORAGE_CLASS_AUTO: + case STORAGE_CLASS_REGISTER: + case STORAGE_CLASS_ENUM_ENTRY: + break; + } + panic("Invalid storage class for global variable"); +} + +static void create_local_declaration(declaration_t *declaration) +{ + if(declaration->symbol == NULL) + return; - if(statement->base.next == NULL - && statement->type == STATEMENT_EXPRESSION) { - result = expression_statement_to_firm( - (expression_statement_t*) statement); - break; + type_t *type = skip_typeref(declaration->type); + + switch ((storage_class_tag_t) declaration->storage_class) { + case STORAGE_CLASS_STATIC: + create_local_static_variable(declaration); + return; + case STORAGE_CLASS_EXTERN: + create_global_variable(declaration); + create_declaration_initializer(declaration); + return; + case STORAGE_CLASS_NONE: + case STORAGE_CLASS_AUTO: + case STORAGE_CLASS_REGISTER: + if(is_type_function(type)) { + if(declaration->init.statement != NULL) { + panic("nested functions not supported yet"); + } else { + get_function_entity(declaration); + } + } else { + create_local_variable(declaration); } - statement_to_firm(statement); + return; + case STORAGE_CLASS_ENUM_ENTRY: + case STORAGE_CLASS_TYPEDEF: + case STORAGE_CLASS_THREAD: + case STORAGE_CLASS_THREAD_EXTERN: + case STORAGE_CLASS_THREAD_STATIC: + return; } + panic("invalid storage class found"); +} - return result; +static void declaration_statement_to_firm(declaration_statement_t *statement) +{ + declaration_t *declaration = statement->declarations_begin; + declaration_t *end = statement->declarations_end->next; + for( ; declaration != end; declaration = declaration->next) { + if(declaration->namespc != NAMESPACE_NORMAL) + continue; + create_local_declaration(declaration); + } } static void if_statement_to_firm(if_statement_t *statement) @@ -2143,9 +3954,17 @@ static void for_statement_to_firm(for_statement_t *statement) 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(); } + /* create the step block */ ir_node *const step_block = new_immBlock(); if (statement->step != NULL) { @@ -2172,453 +3991,39 @@ static void for_statement_to_firm(for_statement_t *statement) break_label = false_block; body_block = new_immBlock(); - statement_to_firm(statement->body); - - assert(continue_label == step_block); - assert(break_label == false_block); - continue_label = old_continue_label; - break_label = old_break_label; - - if (get_cur_block() != NULL) { - jmp = new_Jmp(); - add_immBlock_pred(step_block, jmp); - } - } else { - body_block = step_block; - } - - /* create the condition */ - set_cur_block(header_block); - if (statement->condition != NULL) { - create_condition_evaluation(statement->condition, body_block, - false_block); - } else { - keep_alive(header_block); - jmp = new_Jmp(); - add_immBlock_pred(body_block, jmp); - } - - mature_immBlock(body_block); - mature_immBlock(false_block); - mature_immBlock(step_block); - mature_immBlock(header_block); - mature_immBlock(false_block); - - set_cur_block(false_block); -} - -static void create_declaration_entity(declaration_t *declaration, - declaration_type_t declaration_type, - ir_type *parent_type) -{ - ident *id = new_id_from_str(declaration->symbol->string); - ir_type *irtype = get_ir_type(declaration->type); - ir_entity *entity = new_entity(parent_type, id, irtype); - set_entity_ld_ident(entity, id); - - declaration->declaration_type = (unsigned char) declaration_type; - declaration->v.entity = entity; - set_entity_variability(entity, variability_uninitialized); - /* TODO: visibility? */ -} - -typedef struct compound_graph_path_entry_t compound_graph_path_entry_t; - -enum compound_graph_entry_type_t { - COMPOUND_GRAPH_ENTRY_ARRAY, - COMPOUND_GRAPH_ENTRY_COMPOUND -}; - -struct compound_graph_path_entry_t { - int type; - union { - ir_entity *entity; - int array_index; - } v; - compound_graph_path_entry_t *prev; -}; - -static void create_initializer_object(initializer_t *initializer, type_t *type, - ir_entity *entity, compound_graph_path_entry_t *entry, int len); - -static compound_graph_path *create_compound_path(ir_type *type, - compound_graph_path_entry_t *entry, int len) -{ - compound_graph_path *path = new_compound_graph_path(type, len); - - int i = len - 1; - for( ; entry != NULL; entry = entry->prev, --i) { - assert(i >= 0); - if(entry->type == COMPOUND_GRAPH_ENTRY_COMPOUND) { - set_compound_graph_path_node(path, i, entry->v.entity); - } else { - assert(entry->type == COMPOUND_GRAPH_ENTRY_ARRAY); - set_compound_graph_path_array_index(path, i, entry->v.array_index); - } - } - assert(i == -1); - - return path; -} - -static void create_initializer_value(initializer_value_t *initializer, - ir_entity *entity, - compound_graph_path_entry_t *entry, - int len) -{ - ir_node *node = expression_to_firm(initializer->value); - ir_type *type = get_entity_type(entity); - compound_graph_path *path = create_compound_path(type, entry, len); - add_compound_ent_value_w_path(entity, node, path); -} - -static void create_initializer_compound(initializer_list_t *initializer, - compound_type_t *type, - ir_entity *entity, - compound_graph_path_entry_t *last_entry, - int len) -{ - declaration_t *compound_declaration = type->declaration; - - declaration_t *compound_entry = compound_declaration->context.declarations; - - compound_graph_path_entry_t entry; - entry.type = COMPOUND_GRAPH_ENTRY_COMPOUND; - entry.prev = last_entry; - ++len; - - size_t i = 0; - for( ; compound_entry != NULL; compound_entry = compound_entry->next) { - if(compound_entry->symbol == NULL) - continue; - if(compound_entry->namespc != NAMESPACE_NORMAL) - continue; - - if(i >= initializer->len) - break; - - entry.v.entity = compound_entry->v.entity; - - initializer_t *sub_initializer = initializer->initializers[i]; - - assert(compound_entry != NULL); - assert(compound_entry->declaration_type - == DECLARATION_TYPE_COMPOUND_MEMBER); - - if(sub_initializer->type == INITIALIZER_VALUE) { - create_initializer_value(&sub_initializer->value, - entity, &entry, len); - } else { - type_t *entry_type = skip_typeref(compound_entry->type); - create_initializer_object(sub_initializer, entry_type, entity, - &entry, len); - } - - ++i; - } -} - -static void create_initializer_array(initializer_list_t *initializer, - array_type_t *type, ir_entity *entity, - compound_graph_path_entry_t *last_entry, - int len) -{ - type_t *element_type = type->element_type; - element_type = skip_typeref(element_type); - - compound_graph_path_entry_t entry; - entry.type = COMPOUND_GRAPH_ENTRY_ARRAY; - entry.prev = last_entry; - ++len; - - size_t i; - for(i = 0; i < initializer->len; ++i) { - entry.v.array_index = i; - - initializer_t *sub_initializer = initializer->initializers[i]; - - if(sub_initializer->type == INITIALIZER_VALUE) { - create_initializer_value(&sub_initializer->value, - entity, &entry, len); - } else { - create_initializer_object(sub_initializer, element_type, entity, - &entry, len); - } - } - -#if 0 - /* TODO: initialize rest... */ - if(type->size_expression != NULL) { - size_t array_len = fold_constant(type->size_expression); - for( ; i < array_len; ++i) { - - } - } -#endif -} - -static void create_initializer_string(initializer_string_t *initializer, - array_type_t *type, ir_entity *entity, - compound_graph_path_entry_t *last_entry, - int len) -{ - type_t *element_type = type->element_type; - element_type = skip_typeref(element_type); - - compound_graph_path_entry_t entry; - entry.type = COMPOUND_GRAPH_ENTRY_ARRAY; - entry.prev = last_entry; - ++len; - - ir_type *irtype = get_entity_type(entity); - size_t arr_len = get_array_type_size(type); - const char *p = initializer->string; - size_t i = 0; - for(i = 0; i < arr_len; ++i, ++p) { - entry.v.array_index = i; - - ir_node *node = new_Const_long(mode_Bs, *p); - compound_graph_path *path = create_compound_path(irtype, &entry, len); - add_compound_ent_value_w_path(entity, node, path); - - if(*p == '\0') - break; - } -} - -static void create_initializer_wide_string( - const initializer_wide_string_t *const initializer, array_type_t *const type, - ir_entity *const entity, compound_graph_path_entry_t *const last_entry, - int len) -{ - type_t *element_type = type->element_type; - element_type = skip_typeref(element_type); - - compound_graph_path_entry_t entry; - entry.type = COMPOUND_GRAPH_ENTRY_ARRAY; - entry.prev = last_entry; - ++len; - - ir_type *const irtype = get_entity_type(entity); - const size_t arr_len = get_array_type_size(type); - const wchar_rep_t * p = initializer->string.begin; - const wchar_rep_t *const end = p + initializer->string.size; - for (size_t i = 0; i < arr_len && p != end; ++i, ++p) { - entry.v.array_index = i; - - ir_node *node = new_Const_long(mode_Is, *p); - compound_graph_path *path = create_compound_path(irtype, &entry, len); - add_compound_ent_value_w_path(entity, node, path); - } -} - -static void create_initializer_object(initializer_t *initializer, type_t *type, - ir_entity *entity, compound_graph_path_entry_t *entry, int len) -{ - if(is_type_array(type)) { - array_type_t *array_type = &type->array; - - switch (initializer->type) { - case INITIALIZER_STRING: { - initializer_string_t *const string = &initializer->string; - create_initializer_string(string, array_type, entity, entry, len); - return; - } - - case INITIALIZER_WIDE_STRING: { - initializer_wide_string_t *const string = &initializer->wide_string; - create_initializer_wide_string(string, array_type, entity, entry, len); - return; - } - - case INITIALIZER_LIST: { - initializer_list_t *const list = &initializer->list; - create_initializer_array(list, array_type, entity, entry, len); - return; - } - - case INITIALIZER_VALUE: - break; - } - panic("Unhandled initializer"); - } else { - assert(initializer->type == INITIALIZER_LIST); - initializer_list_t *list = &initializer->list; - - assert(is_type_compound(type)); - compound_type_t *compound_type = &type->compound; - create_initializer_compound(list, compound_type, entity, entry, len); - } -} - -static void create_initializer_local_variable_entity(declaration_t *declaration) -{ - initializer_t *initializer = declaration->init.initializer; - dbg_info *dbgi = get_dbg_info(&declaration->source_position); - ir_entity *entity = declaration->v.entity; - ir_node *memory = get_store(); - ir_node *nomem = new_NoMem(); - ir_node *frame = get_irg_frame(current_ir_graph); - ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity); - - if(initializer->type == INITIALIZER_VALUE) { - initializer_value_t *initializer_value = &initializer->value; - - ir_node *value = expression_to_firm(initializer_value->value); - type_t *type = skip_typeref(declaration->type); - assign_value(dbgi, addr, type, value); - return; - } - - /* create a "template" entity which is copied to the entity on the stack */ - ident *id = unique_ident("initializer"); - ir_type *irtype = get_ir_type(declaration->type); - ir_type *global_type = get_glob_type(); - ir_entity *init_entity = new_entity(global_type, id, irtype); - set_entity_ld_ident(init_entity, id); - - set_entity_variability(init_entity, variability_initialized); - set_entity_visibility(init_entity, visibility_local); - - ir_graph *old_current_ir_graph = current_ir_graph; - current_ir_graph = get_const_code_irg(); - - type_t *type = skip_typeref(declaration->type); - create_initializer_object(initializer, type, init_entity, NULL, 0); - - assert(current_ir_graph == get_const_code_irg()); - current_ir_graph = old_current_ir_graph; - - ir_node *src_addr = create_symconst(dbgi, init_entity); - ir_node *copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype); - - ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular); - set_store(copyb_mem); -} - -static void create_initializer(declaration_t *declaration) -{ - initializer_t *initializer = declaration->init.initializer; - if(initializer == NULL) - return; - - declaration_type_t declaration_type - = (declaration_type_t) declaration->declaration_type; - if(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY) { - create_initializer_local_variable_entity(declaration); - return; - } - - if(initializer->type == INITIALIZER_VALUE) { - initializer_value_t *initializer_value = &initializer->value; - - ir_node *value = expression_to_firm(initializer_value->value); - - if(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) { - set_value(declaration->v.value_number, value); - } else { - assert(declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE); - - ir_entity *entity = declaration->v.entity; - - set_entity_variability(entity, variability_initialized); - set_atomic_ent_value(entity, value); - } - } else { - assert(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY - || declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE); - - ir_entity *entity = declaration->v.entity; - set_entity_variability(entity, variability_initialized); - - type_t *type = skip_typeref(declaration->type); - create_initializer_object(initializer, type, entity, NULL, 0); - } -} - -static void create_local_variable(declaration_t *declaration) -{ - assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN); - - bool needs_entity = declaration->address_taken; - type_t *type = skip_typeref(declaration->type); - - if(is_type_array(type) || is_type_compound(type)) { - needs_entity = true; - } - - if(needs_entity) { - ir_type *frame_type = get_irg_frame_type(current_ir_graph); - create_declaration_entity(declaration, - DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY, - frame_type); - } else { - declaration->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE; - declaration->v.value_number = next_value_number_function; - ++next_value_number_function; - } - - create_initializer(declaration); -} - -static void create_local_static_variable(declaration_t *declaration) -{ - assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN); - - type_t *type = skip_typeref(declaration->type); - ir_type *global_type = get_glob_type(); - ident *id = unique_ident(declaration->symbol->string); - ir_type *irtype = get_ir_type(type); - ir_entity *entity = new_entity(global_type, id, irtype); - set_entity_ld_ident(entity, id); - - declaration->declaration_type = DECLARATION_TYPE_GLOBAL_VARIABLE; - declaration->v.entity = entity; - set_entity_variability(entity, variability_uninitialized); - set_entity_visibility(entity, visibility_local); - - ir_graph *old_current_ir_graph = current_ir_graph; - current_ir_graph = get_const_code_irg(); - - create_initializer(declaration); - - assert(current_ir_graph == get_const_code_irg()); - current_ir_graph = old_current_ir_graph; -} + statement_to_firm(statement->body); -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) { - type_t *type = skip_typeref(declaration->type); + assert(continue_label == step_block); + assert(break_label == false_block); + continue_label = old_continue_label; + break_label = old_break_label; - switch ((storage_class_tag_t) declaration->storage_class) { - case STORAGE_CLASS_TYPEDEF: - continue; - case STORAGE_CLASS_STATIC: - create_local_static_variable(declaration); - continue; - case STORAGE_CLASS_ENUM_ENTRY: - panic("enum entry declaration in local block found"); - case STORAGE_CLASS_EXTERN: - panic("extern declaration in local block found"); - case STORAGE_CLASS_NONE: - case STORAGE_CLASS_AUTO: - case STORAGE_CLASS_REGISTER: - if(is_type_function(type)) { - panic("nested functions not supported yet"); - } else { - create_local_variable(declaration); - } - continue; - case STORAGE_CLASS_THREAD: - case STORAGE_CLASS_THREAD_EXTERN: - case STORAGE_CLASS_THREAD_STATIC: - break; + if (get_cur_block() != NULL) { + jmp = new_Jmp(); + add_immBlock_pred(step_block, jmp); } - panic("invalid storage class found"); + } else { + body_block = step_block; + } + + /* create the condition */ + set_cur_block(header_block); + if (statement->condition != NULL) { + create_condition_evaluation(statement->condition, body_block, + false_block); + } else { + keep_alive(header_block); + jmp = new_Jmp(); + add_immBlock_pred(body_block, jmp); } + + mature_immBlock(body_block); + mature_immBlock(false_block); + mature_immBlock(step_block); + mature_immBlock(header_block); + mature_immBlock(false_block); + + set_cur_block(false_block); } static void create_jump_statement(const statement_t *statement, @@ -2636,7 +4041,7 @@ static void create_jump_statement(const statement_t *statement, static void switch_statement_to_firm(const switch_statement_t *statement) { - dbg_info *dbgi = get_dbg_info(&statement->statement.source_position); + 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); @@ -2650,7 +4055,9 @@ static void switch_statement_to_firm(const switch_statement_t *statement) current_switch_cond = cond; break_label = break_block; - statement_to_firm(statement->body); + if (statement->body != NULL) { + statement_to_firm(statement->body); + } if(get_cur_block() != NULL) { ir_node *jmp = new_Jmp(); @@ -2674,73 +4081,68 @@ static void switch_statement_to_firm(const switch_statement_t *statement) set_cur_block(break_block); } -static long fold_constant(const expression_t *expression) -{ - ir_graph *old_current_ir_graph = current_ir_graph; - current_ir_graph = get_const_code_irg(); - - ir_node *cnst = expression_to_firm(expression); - if(!is_Const(cnst)) { - panic("couldn't fold constantl"); - } - tarval *tv = get_Const_tarval(cnst); - if(!tarval_is_long(tv)) { - panic("folded constant not an integer"); - } - - long res = get_tarval_long(tv); - - current_ir_graph = old_current_ir_graph; - return res; -} - static void case_label_to_firm(const case_label_statement_t *statement) { - dbg_info *dbgi = get_dbg_info(&statement->statement.source_position); + dbg_info *dbgi = get_dbg_info(&statement->base.source_position); ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp()); /* let's create a node and hope firm constant folding creates a Const * node... */ ir_node *proj; - set_cur_block(get_nodes_block(current_switch_cond)); - if(statement->expression) { - long pn = fold_constant(statement->expression); - if(pn == MAGIC_DEFAULT_PN_NUMBER) { - /* oops someone detected our cheating... */ - panic("magic default pn used"); - } - proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn); + ir_node *old_block = get_nodes_block(current_switch_cond); + ir_node *block = new_immBlock(); + + set_cur_block(old_block); + if(statement->expression != NULL) { + long start_pn = fold_constant(statement->expression); + long end_pn = start_pn; + if (statement->end_range != NULL) { + end_pn = fold_constant(statement->end_range); + } + assert(start_pn <= end_pn); + /* create jumps for all cases in the given range */ + for (long pn = start_pn; pn <= end_pn; ++pn) { + if(pn == MAGIC_DEFAULT_PN_NUMBER) { + /* oops someone detected our cheating... */ + panic("magic default pn used"); + } + proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn); + add_immBlock_pred(block, proj); + } } else { saw_default_label = true; proj = new_d_defaultProj(dbgi, current_switch_cond, MAGIC_DEFAULT_PN_NUMBER); + + add_immBlock_pred(block, proj); } - ir_node *block = new_immBlock(); if (fallthrough != NULL) { add_immBlock_pred(block, fallthrough); } - add_immBlock_pred(block, proj); mature_immBlock(block); + set_cur_block(block); - statement_to_firm(statement->label_statement); + if(statement->statement != NULL) { + statement_to_firm(statement->statement); + } } static ir_node *get_label_block(declaration_t *label) { assert(label->namespc == NAMESPACE_LABEL); - if(label->declaration_type == DECLARATION_TYPE_LABEL_BLOCK) { + if(label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) { return label->v.block; } - assert(label->declaration_type == DECLARATION_TYPE_UNKNOWN); + assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN); ir_node *old_cur_block = get_cur_block(); ir_node *block = new_immBlock(); set_cur_block(old_cur_block); - label->declaration_type = DECLARATION_TYPE_LABEL_BLOCK; + label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK; label->v.block = block; ARR_APP1(ir_node *, imature_blocks, block); @@ -2760,7 +4162,9 @@ static void label_to_firm(const label_statement_t *statement) set_cur_block(block); keep_alive(block); - statement_to_firm(statement->label_statement); + if(statement->statement != NULL) { + statement_to_firm(statement->statement); + } } static void goto_to_firm(const goto_statement_t *statement) @@ -2775,11 +4179,111 @@ 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; + + size_t n_clobbers = 0; + asm_clobber_t *clobber = statement->clobbers; + for( ; clobber != NULL; clobber = clobber->next) { + if(strcmp(clobber->clobber, "memory") == 0) { + needs_memory = true; + continue; + } + + ident *id = new_id_from_str(clobber->clobber); + 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) { + 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; + } + } + obstack_1grow(&asm_obst, '\0'); + const char *constraint_string = obstack_finish(&asm_obst); + + needs_memory |= supports_memop; + if(supports_memop) { + + } + } +#endif +} + static void statement_to_firm(statement_t *statement) { - switch(statement->type) { + 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; @@ -2823,39 +4327,134 @@ static void statement_to_firm(statement_t *statement) goto_to_firm(&statement->gotos); return; case STATEMENT_ASM: - break; + asm_statement_to_firm(&statement->asms); + return; } panic("Statement not implemented\n"); } +static int count_decls_in_expression(const expression_t *expression); + static int count_local_declarations(const declaration_t * decl, const declaration_t *const end) { int count = 0; for (; decl != end; decl = decl->next) { + if(decl->namespc != NAMESPACE_NORMAL) + continue; const type_t *type = skip_typeref(decl->type); - switch (type->type) { - case TYPE_ATOMIC: - case TYPE_ENUM: - case TYPE_POINTER: - if (!decl->address_taken) - ++count; - break; - - default: break; + if (!decl->address_taken && is_type_scalar(type)) + ++count; + const initializer_t *initializer = decl->init.initializer; + /* FIXME: should walk initializer hierarchies... */ + if(initializer != NULL && initializer->kind == INITIALIZER_VALUE) { + count += count_decls_in_expression(initializer->value.value); } } return count; } +static int count_decls_in_expression(const expression_t *expression) { + int count = 0; + + if(expression == NULL) + return 0; + + switch((expression_kind_t) expression->base.kind) { + case EXPR_STATEMENT: + return count_decls_in_stmts(expression->statement.statement); + EXPR_BINARY_CASES { + int count_left = count_decls_in_expression(expression->binary.left); + int count_right = count_decls_in_expression(expression->binary.right); + return count_left + count_right; + } + EXPR_UNARY_CASES + return count_decls_in_expression(expression->unary.value); + case EXPR_CALL: { + call_argument_t *argument = expression->call.arguments; + for( ; argument != NULL; argument = argument->next) { + count += count_decls_in_expression(argument->expression); + } + return count; + } + + case EXPR_UNKNOWN: + case EXPR_INVALID: + panic("unexpected expression kind"); + + case EXPR_COMPOUND_LITERAL: + /* TODO... */ + break; + + case EXPR_CONDITIONAL: + count += count_decls_in_expression(expression->conditional.condition); + count += count_decls_in_expression(expression->conditional.true_expression); + count += count_decls_in_expression(expression->conditional.false_expression); + return count; + + case EXPR_BUILTIN_PREFETCH: + count += count_decls_in_expression(expression->builtin_prefetch.adr); + count += count_decls_in_expression(expression->builtin_prefetch.rw); + count += count_decls_in_expression(expression->builtin_prefetch.locality); + return count; + + case EXPR_BUILTIN_CONSTANT_P: + count += count_decls_in_expression(expression->builtin_constant.value); + return count; + + case EXPR_SELECT: + count += count_decls_in_expression(expression->select.compound); + return count; + + case EXPR_ARRAY_ACCESS: + count += count_decls_in_expression(expression->array_access.array_ref); + count += count_decls_in_expression(expression->array_access.index); + return count; + + case EXPR_CLASSIFY_TYPE: + count += count_decls_in_expression(expression->classify_type.type_expression); + return count; + + case EXPR_SIZEOF: + case EXPR_ALIGNOF: { + expression_t *tp_expression = expression->typeprop.tp_expression; + if (tp_expression != NULL) { + count += count_decls_in_expression(tp_expression); + } + return count; + } + + case EXPR_OFFSETOF: + case EXPR_REFERENCE: + case EXPR_CONST: + case EXPR_CHARACTER_CONSTANT: + case EXPR_WIDE_CHARACTER_CONSTANT: + case EXPR_STRING_LITERAL: + case EXPR_WIDE_STRING_LITERAL: + case EXPR_FUNCNAME: + case EXPR_BUILTIN_SYMBOL: + case EXPR_VA_START: + case EXPR_VA_ARG: + break; + } + + /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers + * (or implement all the missing expressions here/implement a walker) + */ + + return 0; +} + static int count_decls_in_stmts(const statement_t *stmt) { int count = 0; for (; stmt != NULL; stmt = stmt->base.next) { - switch (stmt->type) { + switch (stmt->kind) { + case STATEMENT_EMPTY: + break; + case STATEMENT_DECLARATION: { - const declaration_statement_t *const decl_stmt = - (const declaration_statement_t*)stmt; + const declaration_statement_t *const decl_stmt = &stmt->declaration; count += count_local_declarations(decl_stmt->declarations_begin, decl_stmt->declarations_end->next); break; @@ -2863,63 +4462,87 @@ static int count_decls_in_stmts(const statement_t *stmt) case STATEMENT_COMPOUND: { const compound_statement_t *const comp = - (const compound_statement_t*)stmt; + &stmt->compound; count += count_decls_in_stmts(comp->statements); break; } case STATEMENT_IF: { - const if_statement_t *const if_stmt = (const if_statement_t*)stmt; + const if_statement_t *const if_stmt = &stmt->ifs; + count += count_decls_in_expression(if_stmt->condition); count += count_decls_in_stmts(if_stmt->true_statement); count += count_decls_in_stmts(if_stmt->false_statement); break; } case STATEMENT_SWITCH: { - const switch_statement_t *const switch_stmt = - (const switch_statement_t*)stmt; + const switch_statement_t *const switch_stmt = &stmt->switchs; + count += count_decls_in_expression(switch_stmt->expression); count += count_decls_in_stmts(switch_stmt->body); break; } case STATEMENT_LABEL: { - const label_statement_t *const label_stmt = - (const label_statement_t*)stmt; - count += count_decls_in_stmts(label_stmt->label_statement); + const label_statement_t *const label_stmt = &stmt->label; + if(label_stmt->statement != NULL) { + count += count_decls_in_stmts(label_stmt->statement); + } break; } case STATEMENT_WHILE: { - const while_statement_t *const while_stmt = - (const while_statement_t*)stmt; + const while_statement_t *const while_stmt = &stmt->whiles; + count += count_decls_in_expression(while_stmt->condition); count += count_decls_in_stmts(while_stmt->body); break; } case STATEMENT_DO_WHILE: { - const do_while_statement_t *const do_while_stmt = - (const do_while_statement_t*)stmt; + const do_while_statement_t *const do_while_stmt = &stmt->do_while; + count += count_decls_in_expression(do_while_stmt->condition); count += count_decls_in_stmts(do_while_stmt->body); break; } case STATEMENT_FOR: { - const for_statement_t *const for_stmt = - (const for_statement_t*)stmt; - /* TODO initialisation */ + const for_statement_t *const for_stmt = &stmt->fors; + count += count_local_declarations(for_stmt->scope.declarations, NULL); + count += count_decls_in_expression(for_stmt->initialisation); + count += count_decls_in_expression(for_stmt->condition); + count += count_decls_in_expression(for_stmt->step); count += count_decls_in_stmts(for_stmt->body); break; } + case STATEMENT_CASE_LABEL: { + const case_label_statement_t *label = &stmt->case_label; + count += count_decls_in_expression(label->expression); + if(label->statement != NULL) { + count += count_decls_in_stmts(label->statement); + } + break; + } + case STATEMENT_ASM: case STATEMENT_BREAK: - case STATEMENT_CASE_LABEL: case STATEMENT_CONTINUE: - case STATEMENT_EXPRESSION: + break; + + case STATEMENT_EXPRESSION: { + const expression_statement_t *expr_stmt = &stmt->expression; + count += count_decls_in_expression(expr_stmt->expression); + break; + } + case STATEMENT_GOTO: case STATEMENT_INVALID: - case STATEMENT_RETURN: break; + + case STATEMENT_RETURN: { + const return_statement_t *ret_stmt = &stmt->returns; + count += count_decls_in_expression(ret_stmt->value); + break; + } } } return count; @@ -2930,15 +4553,11 @@ static int get_function_n_local_vars(declaration_t *declaration) int count = 0; /* count parameters */ - count += count_local_declarations(declaration->context.declarations, NULL); + count += count_local_declarations(declaration->scope.declarations, NULL); /* count local variables declared in body */ count += count_decls_in_stmts(declaration->init.statement); - /* TODO FIXME: Matze: I'm lazy don't want to scan all expressions - * for expression statements... */ - count += 10; - return count; } @@ -2950,9 +4569,9 @@ static void initialize_function_parameters(declaration_t *declaration) ir_type *function_irtype = get_ir_type(declaration->type); int n = 0; - declaration_t *parameter = declaration->context.declarations; + declaration_t *parameter = declaration->scope.declarations; for( ; parameter != NULL; parameter = parameter->next, ++n) { - assert(parameter->declaration_type == DECLARATION_TYPE_UNKNOWN); + assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN); type_t *type = skip_typeref(parameter->type); bool needs_entity = parameter->address_taken; @@ -2966,8 +4585,8 @@ static void initialize_function_parameters(declaration_t *declaration) ident *id = new_id_from_str(parameter->symbol->string); set_entity_ident(entity, id); - parameter->declaration_type - = DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY; + parameter->declaration_kind + = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY; parameter->v.entity = entity; continue; } @@ -2976,14 +4595,50 @@ static void initialize_function_parameters(declaration_t *declaration) long pn = n; ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn); - parameter->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE; + 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); } } +/** + * Handle additional decl modifiers for IR-graphs + * + * @param irg the IR-graph + * @param dec_modifiers additional modifiers + */ +static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers) +{ + if (decl_modifiers & DM_NORETURN) { + /* TRUE if the declaration includes the Microsoft + __declspec(noreturn) specifier. */ + set_irg_additional_property(irg, mtp_property_noreturn); + } + if (decl_modifiers & DM_NOTHROW) { + /* TRUE if the declaration includes the Microsoft + __declspec(nothrow) specifier. */ + set_irg_additional_property(irg, mtp_property_nothrow); + } + if (decl_modifiers & DM_NAKED) { + /* TRUE if the declaration includes the Microsoft + __declspec(naked) specifier. */ + set_irg_additional_property(irg, mtp_property_naked); + } + if (decl_modifiers & DM_FORCEINLINE) { + /* TRUE if the declaration includes the + Microsoft __forceinline specifier. */ + set_irg_inline_property(irg, irg_inline_forced); + } + if (decl_modifiers & DM_NOINLINE) { + /* TRUE if the declaration includes the Microsoft + __declspec(noinline) specifier. */ + set_irg_inline_property(irg, irg_inline_forbidden); + } +} + static void create_function(declaration_t *declaration) { ir_entity *function_entity = get_function_entity(declaration); @@ -2993,6 +4648,7 @@ static void create_function(declaration_t *declaration) current_function_decl = declaration; current_function_name = NULL; + current_funcsig = NULL; assert(imature_blocks == NULL); imature_blocks = NEW_ARR_F(ir_node*, 0); @@ -3001,6 +4657,11 @@ static void create_function(declaration_t *declaration) ir_graph *irg = new_ir_graph(function_entity, n_local_vars); 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); + next_value_number_function = 0; initialize_function_parameters(declaration); @@ -3028,7 +4689,7 @@ static void create_function(declaration_t *declaration) } ir_node *in[1]; - // §5.1.2.2.3 main implicitly returns 0 + /* §5.1.2.2.3 main implicitly returns 0 */ if (strcmp(declaration->symbol->string, "main") == 0) { in[0] = new_Const(mode, get_mode_null(mode)); } else { @@ -3075,70 +4736,14 @@ static void create_function(declaration_t *declaration) } set_type_size_bytes(frame_type, offset); set_type_alignment_bytes(frame_type, align_all); - set_type_state(frame_type, layout_fixed); irg_vrfy(irg); } -static void create_global_variable(declaration_t *declaration) -{ - ir_visibility vis; - ir_type *var_type; - switch ((storage_class_tag_t)declaration->storage_class) { - case STORAGE_CLASS_STATIC: - vis = visibility_local; - goto global_var; - - case STORAGE_CLASS_EXTERN: - vis = visibility_external_allocated; - goto global_var; - - case STORAGE_CLASS_NONE: - vis = visibility_external_visible; - goto global_var; - - case STORAGE_CLASS_THREAD: - vis = visibility_external_visible; - goto tls_var; - - case STORAGE_CLASS_THREAD_EXTERN: - vis = visibility_external_allocated; - goto tls_var; - - case STORAGE_CLASS_THREAD_STATIC: - vis = visibility_local; - goto tls_var; - -tls_var: - var_type = get_tls_type(); - goto create_var; - -global_var: - var_type = get_glob_type(); - goto create_var; - -create_var: - create_declaration_entity(declaration, DECLARATION_TYPE_GLOBAL_VARIABLE, - var_type); - set_entity_visibility(declaration->v.entity, vis); - - current_ir_graph = get_const_code_irg(); - create_initializer(declaration); - return; - - case STORAGE_CLASS_TYPEDEF: - case STORAGE_CLASS_AUTO: - case STORAGE_CLASS_REGISTER: - case STORAGE_CLASS_ENUM_ENTRY: - break; - } - panic("Invalid storage class for global variable"); -} - -static void context_to_firm(context_t *context) +static void scope_to_firm(scope_t *scope) { /* first pass: create declarations */ - declaration_t *declaration = context->declarations; + declaration_t *declaration = scope->declarations; for( ; declaration != NULL; declaration = declaration->next) { if(declaration->namespc != NAMESPACE_NORMAL) continue; @@ -3156,8 +4761,8 @@ static void context_to_firm(context_t *context) } } - /* second pass: create code */ - declaration = context->declarations; + /* second pass: create code/initializers */ + declaration = scope->declarations; for( ; declaration != NULL; declaration = declaration->next) { if(declaration->namespc != NAMESPACE_NORMAL) continue; @@ -3168,15 +4773,35 @@ static void context_to_firm(context_t *context) continue; type_t *type = declaration->type; - if(type->type != TYPE_FUNCTION) - continue; + if(type->kind == TYPE_FUNCTION) { + create_function(declaration); + } else { + assert(declaration->declaration_kind + == DECLARATION_KIND_GLOBAL_VARIABLE); + current_ir_graph = get_const_code_irg(); + create_declaration_initializer(declaration); + } + } +} + +void init_ast2firm(void) +{ + obstack_init(&asm_obst); + init_atomic_modes(); - create_function(declaration); + /* 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); } } -void translation_unit_to_firm(translation_unit_t *unit) +static void init_ir_types(void) { + static int ir_types_initialized = 0; + if(ir_types_initialized) + return; + ir_types_initialized = 1; + type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST); type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE); type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE); @@ -3188,11 +4813,21 @@ void translation_unit_to_firm(translation_unit_t *unit) type in firm */ type_void->base.firm_type = ir_type_void; +} + +void exit_ast2firm(void) +{ + obstack_free(&asm_obst, NULL); +} +void translation_unit_to_firm(translation_unit_t *unit) +{ /* just to be sure */ continue_label = NULL; break_label = NULL; current_switch_cond = NULL; - context_to_firm(& unit->context); + init_ir_types(); + + scope_to_firm(&unit->scope); }