X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ast2firm.c;h=56757d2ec9810dbb2245ff2be4ef7e82a5c44736;hb=116ddd04290c56359a62a6dc4bc238a428dd8f67;hp=0f1d7b9e6bb84636455d975b6195a43237832c42;hpb=353985d8d06fcac2f36682820b8ae635c5e6162e;p=cparser diff --git a/ast2firm.c b/ast2firm.c index 0f1d7b9..56757d2 100644 --- a/ast2firm.c +++ b/ast2firm.c @@ -12,20 +12,35 @@ #include "ast2firm.h" #include "adt/error.h" +#include "adt/array.h" #include "token_t.h" #include "type_t.h" #include "ast_t.h" +#include "parser.h" +#include "lang_features.h" + +#define MAGIC_DEFAULT_PN_NUMBER (long) -314159265 static ir_type *ir_type_const_char; +static ir_type *ir_type_wchar_t; static ir_type *ir_type_void; static ir_type *ir_type_int; -static ir_type *ir_type_void_ptr; static type_t *type_const_char; static type_t *type_void; static type_t *type_int; -static int next_value_number_function; +static int next_value_number_function; +static ir_node *continue_label; +static ir_node *break_label; +static ir_node *current_switch_cond; +static bool saw_default_label; +static ir_node **imature_blocks; + +static const declaration_t *current_function_decl; +static ir_node *current_function_name; + +static struct obstack asm_obst; typedef enum declaration_type_t { DECLARATION_TYPE_UNKNOWN, @@ -33,17 +48,13 @@ typedef enum declaration_type_t { DECLARATION_TYPE_GLOBAL_VARIABLE, DECLARATION_TYPE_LOCAL_VARIABLE, DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY, - DECLARATION_TYPE_COMPOUND_MEMBER + DECLARATION_TYPE_COMPOUND_MEMBER, + DECLARATION_TYPE_LABEL_BLOCK, + DECLARATION_TYPE_ENUM_ENTRY } declaration_type_t; -typedef struct type2firm_env_t type2firm_env_t; -struct type2firm_env_t { - int can_cache; /* nonzero if type can safely be cached because - no typevariables are in the hierarchy */ -}; - -static ir_type *_get_ir_type(type2firm_env_t *env, type_t *type); 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) { @@ -68,7 +79,7 @@ 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) @@ -78,24 +89,9 @@ const char *retrieve_dbg(const dbg_info *dbg, unsigned *line) return pos->input_name; } -void init_ast2firm(void) -{ - type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST); - type_void = make_atomic_type(ATOMIC_TYPE_VOID, 0); - type_int = make_atomic_type(ATOMIC_TYPE_INT, 0); - - ir_type_int = get_ir_type(type_int); - ir_type_const_char = get_ir_type(type_const_char); - ir_type_void = get_ir_type(type_int); /* we don't have a real void - type in firm */ - ir_type_void_ptr = new_type_pointer(new_id_from_str("void_ptr"), - ir_type_void, mode_P_data); - - type_void->firm_type = ir_type_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; @@ -104,89 +100,154 @@ static ident *unique_ident(const char *tag) { char buf[256]; - snprintf(buf, sizeof(buf), "%s.%d", tag, unique_id); + snprintf(buf, sizeof(buf), "%s.%u", tag, unique_id); unique_id++; return new_id_from_str(buf); } -static type_t *skip_typeref(type_t *type) +/** + * Return the signed integer mode of size bytes. + * + * @param size the size + */ +static ir_mode *get_smode(unsigned size) { - while(1) { - switch(type->type) { - case TYPE_TYPEDEF: { - const typedef_type_t *typedef_type = (const typedef_type_t*) type; - type = typedef_type->declaration->type; - continue; - } - case TYPE_TYPEOF: { - const typeof_type_t *typeof_type = (const typeof_type_t *) type; - if(typeof_type->typeof_type != NULL) { - type = typeof_type->typeof_type; - } else { - type = typeof_type->expression->datatype; - } - continue; - } - default: - break; - } - 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; } + 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]; - return 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 ); + + u_modes[size] = res; + } + return res; } -static ir_mode *get_atomic_mode(const atomic_type_t* atomic_type) +/** + * Return the pointer mode of size bytes. + * + * @param size the size + */ +static ir_mode *get_ptrmode(unsigned size, char *name) { - 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; + static ir_mode *p_modes[16 + 1] = {0, }; + ir_mode *res; + + if (size <= 0 || size > 16) + return NULL; + + res = p_modes[size]; + if (res == NULL) { + unsigned bits; + char buf[32]; + + bits = size * 8; + if (name == NULL) { + snprintf(buf, sizeof(buf), "p%u", bits); + name = buf; + } + res = new_ir_mode(name, irms_reference, bits, 0, irma_twos_complement, + bits <= machine_size ? machine_size : bits); + + p_modes[size] = res; + + set_reference_mode_signed_eq(res, get_smode(size)); + set_reference_mode_unsigned_eq(res, get_umode(size)); + } + return res; +} + +static ir_mode *_atomic_modes[ATOMIC_TYPE_LAST]; + +static ir_mode *mode_int, *mode_uint; + +/** + * 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; + #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; + _atomic_modes[ATOMIC_TYPE_BOOL] = _atomic_modes[ATOMIC_TYPE_INT]; + _atomic_modes[ATOMIC_TYPE_FLOAT_IMAGINARY] = _atomic_modes[ATOMIC_TYPE_FLOAT]; + _atomic_modes[ATOMIC_TYPE_DOUBLE_IMAGINARY] = _atomic_modes[ATOMIC_TYPE_DOUBLE]; + _atomic_modes[ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY] = _atomic_modes[ATOMIC_TYPE_LONG_DOUBLE]; #endif - case ATOMIC_TYPE_VOID: - panic("tried to get mode from void type"); - break; - case ATOMIC_TYPE_INVALID: - break; - } - panic("Encountered unknown atomic type"); + + /* 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->atype < (unsigned)ATOMIC_TYPE_LAST) + res = _atomic_modes[(unsigned)atomic_type->atype]; + if (res == NULL) + panic("Encountered unknown atomic type"); + return res; +} static unsigned get_type_size(type_t *type); @@ -205,13 +266,19 @@ static unsigned get_atomic_type_size(const atomic_type_t *type) case ATOMIC_TYPE_BOOL: case ATOMIC_TYPE_INT: case ATOMIC_TYPE_UINT: + return machine_size >> 3; + case ATOMIC_TYPE_LONG: case ATOMIC_TYPE_ULONG: - case ATOMIC_TYPE_FLOAT: - return 4; + return machine_size > 16 ? machine_size >> 3 : 4; case ATOMIC_TYPE_LONGLONG: case ATOMIC_TYPE_ULONGLONG: + return machine_size > 16 ? 8 : 4; + + case ATOMIC_TYPE_FLOAT: + return 4; + case ATOMIC_TYPE_DOUBLE: return 8; @@ -222,6 +289,7 @@ static unsigned get_atomic_type_size(const atomic_type_t *type) return 1; case ATOMIC_TYPE_INVALID: + case ATOMIC_TYPE_LAST: break; } panic("Trying to determine size of invalid atomic type"); @@ -229,36 +297,38 @@ static unsigned get_atomic_type_size(const atomic_type_t *type) static unsigned get_compound_type_size(compound_type_t *type) { - ir_type *irtype = get_ir_type(&type->type); + ir_type *irtype = get_ir_type((type_t*) type); return get_type_size_bytes(irtype); } static unsigned get_array_type_size(array_type_t *type) { - ir_type *irtype = get_ir_type(&type->type); + ir_type *irtype = get_ir_type((type_t*) type); return get_type_size_bytes(irtype); } + static unsigned get_type_size(type_t *type) { type = skip_typeref(type); switch(type->type) { case TYPE_ATOMIC: - return get_atomic_type_size((const atomic_type_t*) type); + return get_atomic_type_size(&type->atomic); 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((compound_type_t*) type); + return get_compound_type_size(&type->compound); case TYPE_FUNCTION: /* just a pointer to the function */ return get_mode_size_bytes(mode_P_code); case TYPE_POINTER: return get_mode_size_bytes(mode_P_data); case TYPE_ARRAY: - return get_array_type_size((array_type_t*) type); + return get_array_type_size(&type->array); case TYPE_BUILTIN: + return get_type_size(type->builtin.real_type); case TYPE_TYPEDEF: case TYPE_TYPEOF: case TYPE_INVALID: @@ -282,48 +352,51 @@ static unsigned count_parameters(const function_type_t *function_type) -static ir_type *create_atomic_type(type2firm_env_t *env, - const atomic_type_t *type) +static long fold_constant(const expression_t *expression); + +static ir_type *create_atomic_type(const atomic_type_t *type) { - (void) env; ir_mode *mode = get_atomic_mode(type); ident *id = get_mode_ident(mode); ir_type *irtype = new_type_primitive(id, mode); + if(type->atype == ATOMIC_TYPE_LONG_DOUBLE) { + set_type_alignment_bytes(irtype, 4); + } + return irtype; } -static ir_type *create_method_type(type2firm_env_t *env, - const function_type_t *function_type) +static ir_type *create_method_type(const function_type_t *function_type) { - type_t *result_type = function_type->result_type; + type_t *return_type = function_type->return_type; ident *id = unique_ident("functiontype"); int n_parameters = count_parameters(function_type); - int n_results = result_type == type_void ? 0 : 1; + int n_results = return_type == type_void ? 0 : 1; ir_type *irtype = new_type_method(id, n_parameters, n_results); - if(result_type != type_void) { - ir_type *restype = _get_ir_type(env, result_type); + if(return_type != type_void) { + ir_type *restype = get_ir_type(return_type); set_method_res_type(irtype, 0, restype); } function_parameter_t *parameter = function_type->parameters; int n = 0; for( ; parameter != NULL; parameter = parameter->next) { - ir_type *p_irtype = _get_ir_type(env, parameter->type); + ir_type *p_irtype = get_ir_type(parameter->type); set_method_param_type(irtype, n, p_irtype); ++n; } - if(function_type->variadic) { + if(function_type->variadic || function_type->unspecified_parameters) { set_method_variadicity(irtype, variadicity_variadic); } return irtype; } -static ir_type *create_pointer_type(type2firm_env_t *env, pointer_type_t *type) +static ir_type *create_pointer_type(pointer_type_t *type) { type_t *points_to = type->points_to; ir_type *ir_points_to; @@ -335,39 +408,43 @@ static ir_type *create_pointer_type(type2firm_env_t *env, pointer_type_t *type) ir_type_void, mode_P_data); type->type.firm_type = ir_type; - ir_points_to = _get_ir_type(env, points_to); + ir_points_to = get_ir_type(points_to); set_pointer_points_to_type(ir_type, ir_points_to); return ir_type; } -static ir_type *create_array_type(type2firm_env_t *env, array_type_t *type) +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(env, element_type); + ir_type *ir_element_type = get_ir_type(element_type); - /* TODO... */ - int n_elements = 0; - panic("TODO arraytpye size not implemented yet"); + ident *id = unique_ident("array"); + ir_type *ir_type = new_type_array(id, 1, ir_element_type); - ir_type *ir_type = new_type_array(unique_ident("array"), 1, ir_element_type); - set_array_bounds_int(ir_type, 0, 0, n_elements); + if(type->size != NULL) { + int n_elements = fold_constant(type->size); - 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_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_size_bytes(ir_type, n_elements * elemsize); - set_type_alignment_bytes(ir_type, align); - set_type_state(ir_type, layout_fixed); return ir_type; } #define INVALID_TYPE ((ir_type_ptr)-1) -static ir_type *create_struct_type(type2firm_env_t *env, compound_type_t *type) +static ir_type *create_struct_type(compound_type_t *type) { symbol_t *symbol = type->declaration->symbol; ident *id; @@ -384,15 +461,20 @@ static ir_type *create_struct_type(type2firm_env_t *env, compound_type_t *type) int offset = 0; declaration_t *entry = type->declaration->context.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(env, entry->type); + ir_type_ptr entry_ir_type = 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; - offset += misalign; + int misalign = offset % entry_alignment; + if (misalign != 0) + offset += entry_alignment - misalign; - ir_entity *entity = new_entity(ir_type, ident, entry_ir_type); + dbg_info *const dbgi = get_dbg_info(&entry->source_position); + ir_entity *const entity = new_d_entity(ir_type, ident, entry_ir_type, dbgi); set_entity_offset(entity, offset); add_struct_member(ir_type, entity); entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER; @@ -416,7 +498,7 @@ static ir_type *create_struct_type(type2firm_env_t *env, compound_type_t *type) return ir_type; } -static ir_type *create_union_type(type2firm_env_t *env, compound_type_t *type) +static ir_type *create_union_type(compound_type_t *type) { declaration_t *declaration = type->declaration; symbol_t *symbol = declaration->symbol; @@ -434,13 +516,17 @@ static ir_type *create_union_type(type2firm_env_t *env, compound_type_t *type) int size = 0; declaration_t *entry = declaration->context.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(env, entry->type); + ir_type_ptr entry_ir_type = 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); - ir_entity *entity = new_entity(ir_type, ident, entry_ir_type); + dbg_info *const dbgi = get_dbg_info(&entry->source_position); + ir_entity *const entity = new_d_entity(ir_type, ident, entry_ir_type, dbgi); add_union_member(ir_type, entity); set_entity_offset(entity, 0); entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER; @@ -464,41 +550,76 @@ static ir_type *create_union_type(type2firm_env_t *env, compound_type_t *type) return ir_type; } -static ir_type *_get_ir_type(type2firm_env_t *env, type_t *type) +static ir_node *expression_to_firm(const expression_t *expression); +static inline ir_mode *get_ir_mode(type_t *type); + +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); + tarval *const one = get_mode_one(mode); + tarval * tv_next = get_tarval_null(mode); + + declaration_t *declaration = type->declaration->next; + for (; declaration != NULL; declaration = declaration->next) { + if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY) + break; + + declaration->declaration_type = DECLARATION_TYPE_ENUM_ENTRY; + + expression_t *const init = declaration->init.enum_value; + if (init != NULL) { + ir_node *const cnst = expression_to_firm(init); + if (!is_Const(cnst)) { + panic("couldn't fold constant"); + } + tv_next = get_Const_tarval(cnst); + } + declaration->v.enum_val = tv_next; + tv_next = tarval_add(tv_next, one); + } + + return ir_type_int; +} + +static ir_type *get_ir_type(type_t *type) { assert(type != NULL); type = skip_typeref(type); - if(type->firm_type != NULL) { - assert(type->firm_type != INVALID_TYPE); - return type->firm_type; + if(type->base.firm_type != NULL) { + assert(type->base.firm_type != INVALID_TYPE); + return type->base.firm_type; } ir_type *firm_type = NULL; switch(type->type) { case TYPE_ATOMIC: - firm_type = create_atomic_type(env, (atomic_type_t*) type); + firm_type = create_atomic_type(&type->atomic); break; case TYPE_FUNCTION: - firm_type = create_method_type(env, (function_type_t*) type); + firm_type = create_method_type(&type->function); break; case TYPE_POINTER: - firm_type = create_pointer_type(env, (pointer_type_t*) type); + firm_type = create_pointer_type(&type->pointer); break; case TYPE_ARRAY: - firm_type = create_array_type(env, (array_type_t*) type); + firm_type = create_array_type(&type->array); break; case TYPE_COMPOUND_STRUCT: - firm_type = create_struct_type(env, (compound_type_t*) type); + firm_type = create_struct_type(&type->compound); break; case TYPE_COMPOUND_UNION: - firm_type = create_union_type(env, (compound_type_t*) type); + firm_type = create_union_type(&type->compound); break; case TYPE_ENUM: - firm_type = ir_type_int; + firm_type = create_enum_type(&type->enumt); break; case TYPE_BUILTIN: + firm_type = get_ir_type(type->builtin.real_type); + break; case TYPE_TYPEOF: case TYPE_TYPEDEF: case TYPE_INVALID: @@ -507,25 +628,20 @@ static ir_type *_get_ir_type(type2firm_env_t *env, type_t *type) if(firm_type == NULL) panic("unknown type found"); - if(env->can_cache) { - type->firm_type = firm_type; - } + type->base.firm_type = firm_type; return firm_type; - -} - -static ir_type *get_ir_type(type_t *type) -{ - type2firm_env_t env; - env.can_cache = 1; - - return _get_ir_type(&env, type); } static inline ir_mode *get_ir_mode(type_t *type) { ir_type *irtype = get_ir_type(type); - ir_mode *mode = get_type_mode(irtype); + + /* firm doesn't report a mode for arrays somehow... */ + if(is_Array_type(irtype)) { + return mode_P_data; + } + + ir_mode *mode = get_type_mode(irtype); assert(mode != NULL); return mode; } @@ -543,17 +659,18 @@ 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)); - type_t *type = declaration->type; - 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 - || type->qualifiers & TYPE_QUALIFIER_INLINE) { + if(declaration->storage_class == STORAGE_CLASS_STATIC + || declaration->is_inline) { set_entity_visibility(entity, visibility_local); } else if(declaration->init.statement != NULL) { set_entity_visibility(entity, visibility_external_visible); } else { set_entity_visibility(entity, visibility_external_allocated); } + set_entity_allocation(entity, allocation_static); declaration->declaration_type = DECLARATION_TYPE_FUNCTION; declaration->v.entity = entity; @@ -561,25 +678,24 @@ static ir_entity* get_function_entity(declaration_t *declaration) return entity; } - - -static ir_node *expression_to_firm(const expression_t *expression); - -static dbg_info *get_dbg_info(const source_position_t *pos) -{ - return (dbg_info*) pos; -} - -static ir_node *const_to_firm(const const_t *cnst) +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); - tarval *tv; + char buf[128]; + tarval *tv; + size_t len; if(mode_is_float(mode)) { tv = new_tarval_from_double(cnst->v.float_value, mode); } else { - tv = new_tarval_from_long(cnst->v.int_value, mode); + if(mode_is_signed(mode)) { + len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value); + } else { + len = snprintf(buf, sizeof(buf), "%llu", + (unsigned long long) cnst->v.int_value); + } + tv = new_tarval_from_str(buf, len, mode); } return new_d_Const(dbgi, mode, tv); @@ -593,29 +709,32 @@ static ir_node *create_symconst(dbg_info *dbgi, ir_entity *entity) return new_d_SymConst(dbgi, sym, symconst_addr_ent); } -static ir_node *string_literal_to_firm(const string_literal_t* literal) +static ir_node *string_to_firm(const source_position_t *const src_pos, + const char *const id_prefix, + const char *const string) { - ir_type *global_type = get_glob_type(); - ir_type *type = new_type_array(unique_ident("strtype"), 1, - ir_type_const_char); + ir_type *const global_type = get_glob_type(); + ir_type *const type = new_type_array(unique_ident("strtype"), 1, + ir_type_const_char); - ident *id = unique_ident("Lstr"); - ir_entity *entity = new_entity(global_type, id, type); + ident *const id = unique_ident(id_prefix); + dbg_info *const dbgi = get_dbg_info(src_pos); + 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 *elem_type = ir_type_const_char; - ir_mode *mode = get_type_mode(elem_type); + ir_type *const elem_type = ir_type_const_char; + ir_mode *const mode = get_type_mode(elem_type); - const char *string = literal->value; - size_t slen = strlen(string) + 1; + const size_t slen = strlen(string) + 1; set_array_lower_bound_int(type, 0, 0); set_array_upper_bound_int(type, 0, slen); set_type_size_bytes(type, slen); set_type_state(type, layout_fixed); - tarval **tvs = xmalloc(slen * sizeof(tvs[0])); + tarval **const tvs = xmalloc(slen * sizeof(tvs[0])); for(size_t i = 0; i < slen; ++i) { tvs[i] = new_tarval_from_long(string[i], mode); } @@ -623,42 +742,255 @@ static ir_node *string_literal_to_firm(const string_literal_t* literal) set_array_entity_values(entity, tvs, slen); free(tvs); - dbg_info *dbgi = get_dbg_info(&literal->expression.source_position); + return create_symconst(dbgi, 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); +} + +static ir_node *wide_string_literal_to_firm( + const wide_string_literal_expression_t* const literal) +{ + ir_type *const global_type = get_glob_type(); + ir_type *const elem_type = ir_type_wchar_t; + ir_type *const type = new_type_array(unique_ident("strtype"), 1, + elem_type); + + ident *const id = unique_ident("Lstr"); + dbg_info *const dbgi = get_dbg_info(&literal->expression.source_position); + ir_entity *const entity = new_d_entity(global_type, id, type, dbgi); + set_entity_ld_ident(entity, id); + set_entity_variability(entity, variability_constant); + set_entity_allocation(entity, allocation_static); + + ir_mode *const mode = get_type_mode(elem_type); + + const wchar_rep_t *const string = literal->value.begin; + const size_t slen = literal->value.size; + + set_array_lower_bound_int(type, 0, 0); + set_array_upper_bound_int(type, 0, slen); + set_type_size_bytes(type, slen); + set_type_state(type, layout_fixed); + + tarval **const tvs = xmalloc(slen * sizeof(tvs[0])); + for(size_t i = 0; i < slen; ++i) { + tvs[i] = new_tarval_from_long(string[i], mode); + } + + set_array_entity_values(entity, tvs, slen); + free(tvs); return create_symconst(dbgi, entity); } +static ir_node *deref_address(ir_type *const irtype, ir_node *const addr, + dbg_info *const dbgi) +{ + if(is_compound_type(irtype) || is_Array_type(irtype)) { + return addr; + } + + ir_mode *const mode = get_type_mode(irtype); + ir_node *const memory = get_store(); + ir_node *const load = new_d_Load(dbgi, memory, addr, mode); + ir_node *const load_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); + set_store(load_mem); + return load_res; +} + +static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node) +{ + ir_mode *mode = get_irn_mode(node); + + if(!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding)) + return node; + if(!mode_is_float(mode)) + return node; + + /* check if there is already a Conv */ + if (get_irn_op(node) == op_Conv) { + /* convert it into a strict Conv */ + set_Conv_strict(node, 1); + return node; + } + + /* otherwise create a new one */ + return new_d_strictConv(dbgi, node, mode); +} + +static ir_node *get_global_var_address(dbg_info *const dbgi, + const declaration_t *const decl) +{ + assert(decl->declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE); + + ir_entity *const entity = decl->v.entity; + switch ((storage_class_tag_t)decl->storage_class) { + case STORAGE_CLASS_THREAD: + case STORAGE_CLASS_THREAD_EXTERN: + case STORAGE_CLASS_THREAD_STATIC: { + ir_node *const no_mem = new_NoMem(); + ir_node *const tls = get_irg_tls(current_ir_graph); + return new_d_simpleSel(dbgi, no_mem, tls, entity); + } + + default: + return create_symconst(dbgi, entity); + } +} + static ir_node *reference_expression_to_firm(const reference_expression_t *ref) { dbg_info *dbgi = get_dbg_info(&ref->expression.source_position); declaration_t *declaration = ref->declaration; - type_t *type = declaration->type; - ir_mode *mode = get_ir_mode(type); + type_t *type = skip_typeref(declaration->type); + + switch((declaration_type_t) declaration->declaration_type) { + case DECLARATION_TYPE_UNKNOWN: + if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY) { + break; + } + get_ir_type(type); + /* FALLTHROUGH */ + + case DECLARATION_TYPE_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); + return get_value(declaration->v.value_number, mode); + } + case DECLARATION_TYPE_FUNCTION: { + return create_symconst(dbgi, declaration->v.entity); + } + case DECLARATION_TYPE_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); + } + + case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: { + ir_entity *entity = declaration->v.entity; + ir_node *frame = get_irg_frame(current_ir_graph); + ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity); + ir_type *irtype = get_entity_type(entity); + return deref_address(irtype, sel, dbgi); + } + + case DECLARATION_TYPE_COMPOUND_MEMBER: + case DECLARATION_TYPE_LABEL_BLOCK: + panic("not implemented reference type"); + } + + panic("reference to declaration with unknown type found"); +} + +static ir_node *reference_addr(const reference_expression_t *ref) +{ + dbg_info *dbgi = get_dbg_info(&ref->expression.source_position); + declaration_t *declaration = ref->declaration; switch((declaration_type_t) declaration->declaration_type) { case DECLARATION_TYPE_UNKNOWN: break; case DECLARATION_TYPE_LOCAL_VARIABLE: - return get_value(declaration->v.value_number, mode); + panic("local variable without entity has no address"); case DECLARATION_TYPE_FUNCTION: { return create_symconst(dbgi, declaration->v.entity); } - case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: - case DECLARATION_TYPE_GLOBAL_VARIABLE: + case DECLARATION_TYPE_GLOBAL_VARIABLE: { + ir_node *const addr = get_global_var_address(dbgi, declaration); + return addr; + } + case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: { + ir_entity *entity = declaration->v.entity; + ir_node *frame = get_irg_frame(current_ir_graph); + ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity); + + return sel; + } + + case DECLARATION_TYPE_ENUM_ENTRY: + panic("trying to reference enum entry"); + case DECLARATION_TYPE_COMPOUND_MEMBER: + case DECLARATION_TYPE_LABEL_BLOCK: panic("not implemented reference type"); } panic("reference to declaration with unknown type found"); } +static ir_node *process_builtin_call(const call_expression_t *call) +{ + dbg_info *dbgi = get_dbg_info(&call->expression.source_position); + + assert(call->function->type == EXPR_BUILTIN_SYMBOL); + builtin_symbol_expression_t *builtin = &call->function->builtin_symbol; + + type_t *type = skip_typeref(builtin->expression.datatype); + assert(is_type_pointer(type)); + + type_t *function_type = skip_typeref(type->pointer.points_to); + symbol_t *symbol = builtin->symbol; + + switch(symbol->ID) { + case T___builtin_alloca: { + if(call->arguments == NULL || call->arguments->next != NULL) { + panic("invalid number of parameters on __builtin_alloca"); + } + expression_t *argument = call->arguments->expression; + ir_node *size = expression_to_firm(argument); + + ir_node *store = get_store(); + ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type, + stack_alloc); + ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M); + set_store(proj_m); + ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res); + + return res; + } + case T___builtin_nan: + case T___builtin_nanf: + case T___builtin_nand: { + /* Ignore string for now... */ + assert(is_type_function(function_type)); + ir_mode *mode = get_ir_mode(function_type->function.return_type); + tarval *tv = get_mode_NAN(mode); + ir_node *res = new_d_Const(dbgi, mode, tv); + return res; + } + case T___builtin_va_end: + return NULL; + default: + panic("Unsupported builtin found\n"); + } +} + static ir_node *call_expression_to_firm(const call_expression_t *call) { - expression_t *function = call->function; - ir_node *callee = expression_to_firm(function); + assert(get_cur_block() != NULL); + + expression_t *function = call->function; + if(function->type == EXPR_BUILTIN_SYMBOL) { + return process_builtin_call(call); + } + ir_node *callee = expression_to_firm(function); - assert(function->datatype->type == TYPE_FUNCTION); - function_type_t *function_type = (function_type_t*) function->datatype; + type_t *type = skip_typeref(function->base.datatype); + assert(is_type_pointer(type)); + pointer_type_t *pointer_type = &type->pointer; + type_t *points_to = skip_typeref(pointer_type->points_to); + assert(is_type_function(points_to)); + function_type_t *function_type = &points_to->function; int n_parameters = 0; call_argument_t *argument = call->arguments; @@ -666,9 +998,11 @@ static ir_node *call_expression_to_firm(const call_expression_t *call) ++n_parameters; } + dbg_info *dbgi = get_dbg_info(&call->expression.source_position); + ir_type *ir_method_type = get_ir_type((type_t*) function_type); ir_type *new_method_type = NULL; - if(function_type->variadic) { + if(function_type->variadic || function_type->unspecified_parameters) { /* we need to construct a new method type matching the call * arguments... */ int n_res = get_method_n_ress(ir_method_type); @@ -692,9 +1026,11 @@ static ir_node *call_expression_to_firm(const call_expression_t *call) expression_t *expression = argument->expression; ir_node *arg_node = expression_to_firm(expression); + arg_node = do_strict_conv(dbgi, arg_node); + in[n] = arg_node; if(new_method_type != NULL) { - ir_type *irtype = get_ir_type(expression->datatype); + ir_type *irtype = get_ir_type(expression->base.datatype); set_method_param_type(new_method_type, n, irtype); } @@ -705,17 +1041,22 @@ static ir_node *call_expression_to_firm(const call_expression_t *call) if(new_method_type != NULL) ir_method_type = new_method_type; - dbg_info *dbgi = get_dbg_info(&call->expression.source_position); ir_node *store = get_store(); ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in, ir_method_type); ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular); set_store(mem); - type_t *result_type = function_type->result_type; + type_t *return_type = skip_typeref(function_type->return_type); ir_node *result = NULL; - if(result_type != type_void) { - ir_mode *mode = get_ir_mode(result_type); + + if(!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) { + ir_mode *mode; + if(is_type_scalar(return_type)) { + mode = get_ir_mode(return_type); + } else { + mode = mode_P_data; + } ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result); result = new_d_Proj(dbgi, resproj, mode, 0); } @@ -723,29 +1064,39 @@ static ir_node *call_expression_to_firm(const call_expression_t *call) return result; } -static ir_node *load_from_expression_addr(type_t *type, ir_node *addr, - dbg_info *dbgi) -{ - ir_mode *mode = get_ir_mode(type); - ir_node *memory = get_store(); - ir_node *load = new_d_Load(dbgi, memory, 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); - set_store(load_mem); +static void statement_to_firm(statement_t *statement); +static ir_node *compound_statement_to_firm(compound_statement_t *compound); - return load_res; -} +static ir_node *expression_to_addr(const expression_t *expression); +static void create_condition_evaluation(const expression_t *expression, + ir_node *true_block, + ir_node *false_block); -static ir_node *expression_addr(const expression_t *expression) +static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type, + ir_node *value) { - (void) expression; - panic("expression_addr not implemented yet"); - return NULL; + value = do_strict_conv(dbgi, value); + + ir_node *memory = get_store(); + + if(is_type_scalar(type)) { + ir_node *store = new_d_Store(dbgi, memory, addr, value); + ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M); + set_store(store_mem); + } else { + ir_type *irtype = get_ir_type(type); + ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype); + ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular); + set_store(copyb_mem); + } } 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; @@ -756,14 +1107,17 @@ static void set_value_for_expression(const expression_t *expression, return; } } - panic("set_value_for_expression not implemented yet"); + + ir_node *addr = expression_to_addr(expression); + type_t *type = skip_typeref(expression->base.datatype); + assign_value(dbgi, addr, type, value); } static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode) { ir_mode *value_mode = get_irn_mode(value); - if(value_mode == dest_mode) + if (value_mode == dest_mode || is_Bad(value)) return value; if(dest_mode == mode_b) { @@ -776,26 +1130,76 @@ static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode) return new_d_Conv(dbgi, value, dest_mode); } -static ir_node *unary_expression_to_firm(const unary_expression_t *expression) +static ir_node *create_incdec(const unary_expression_t *expression) { - dbg_info *dbgi = get_dbg_info(&expression->expression.source_position); - type_t *type = expression->expression.datatype; - ir_mode *mode = get_ir_mode(type); - - if(expression->type == UNEXPR_TAKE_ADDRESS) - return expression_addr(expression->value); + 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); + expression_t *value = expression->value; + + ir_node *value_node = expression_to_firm(value); + + 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_int, elem_size); + } else { + assert(is_type_arithmetic(type)); + offset = new_Const(mode, get_mode_one(mode)); + } - const expression_t *value = expression->value; + switch(expression->expression.type) { + case EXPR_UNARY_POSTFIX_INCREMENT: { + ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode); + set_value_for_expression(value, new_value); + return value_node; + } + case EXPR_UNARY_POSTFIX_DECREMENT: { + ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode); + set_value_for_expression(value, new_value); + return value_node; + } + case EXPR_UNARY_PREFIX_INCREMENT: { + ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode); + set_value_for_expression(value, new_value); + return new_value; + } + case EXPR_UNARY_PREFIX_DECREMENT: { + ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode); + set_value_for_expression(value, new_value); + return new_value; + } + default: + panic("no incdec expr in create_incdec"); + return NULL; + } +} + +static ir_node *unary_expression_to_firm(const unary_expression_t *expression) +{ + dbg_info *dbgi = get_dbg_info(&expression->expression.source_position); + type_t *type = skip_typeref(expression->expression.datatype); + + if(expression->expression.type == EXPR_UNARY_TAKE_ADDRESS) + return expression_to_addr(expression->value); + + const expression_t *value = expression->value; ir_node *value_node = expression_to_firm(value); - switch(expression->type) { - case UNEXPR_NEGATE: + switch(expression->expression.type) { + case EXPR_UNARY_NEGATE: { + ir_mode *mode = get_ir_mode(type); return new_d_Minus(dbgi, value_node, mode); - case UNEXPR_PLUS: + } + case EXPR_UNARY_PLUS: return value_node; - case UNEXPR_BITWISE_NEGATE: + case EXPR_UNARY_BITWISE_NEGATE: { + ir_mode *mode = get_ir_mode(type); return new_d_Not(dbgi, value_node, mode); - case UNEXPR_NOT: + } + case EXPR_UNARY_NOT: { + ir_mode *mode = get_ir_mode(type); if(get_irn_mode(value_node) != mode_b) { value_node = create_conv(dbgi, value_node, mode_b); } @@ -804,69 +1208,334 @@ static ir_node *unary_expression_to_firm(const unary_expression_t *expression) value_node = create_conv(dbgi, value_node, mode); } return value_node; - case UNEXPR_DEREFERENCE: - return load_from_expression_addr(type, value_node, dbgi); - case UNEXPR_POSTFIX_INCREMENT: { - ir_node *one = new_Const(mode, get_mode_one(mode)); - ir_node *new_value = new_d_Add(dbgi, value_node, one, mode); - set_value_for_expression(value, new_value); - return value_node; } - case UNEXPR_POSTFIX_DECREMENT: { - ir_node *one = new_Const(mode, get_mode_one(mode)); - ir_node *new_value = new_d_Sub(dbgi, value_node, one, mode); - set_value_for_expression(value, new_value); - return value_node; - } - case UNEXPR_PREFIX_INCREMENT: { - ir_node *one = new_Const(mode, get_mode_one(mode)); - ir_node *new_value = new_d_Add(dbgi, value_node, one, mode); - set_value_for_expression(value, new_value); - return new_value; + case EXPR_UNARY_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); } - case UNEXPR_PREFIX_DECREMENT: { - ir_node *one = new_Const(mode, get_mode_one(mode)); - ir_node *new_value = new_d_Sub(dbgi, value_node, one, mode); - set_value_for_expression(value, new_value); - return new_value; + 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_mode *mode = get_ir_mode(type); + ir_node *node = create_conv(dbgi, value_node, mode); + node = do_strict_conv(dbgi, node); + return node; } - case UNEXPR_CAST: + case EXPR_UNARY_CAST_IMPLICIT: { + ir_mode *mode = get_ir_mode(type); return create_conv(dbgi, value_node, mode); + } - case UNEXPR_TAKE_ADDRESS: - case UNEXPR_INVALID: + default: break; } panic("invalid UNEXPR type found"); } -static long get_pnc(binary_expression_type_t type) +static long get_pnc(const expression_type_t type) { 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; + case EXPR_BINARY_EQUAL: return pn_Cmp_Eq; + case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg; + case EXPR_BINARY_NOTEQUAL: return pn_Cmp_Ne; + 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; + default: break; } panic("trying to get pn_Cmp from non-comparison binexpr type"); } -static ir_node *binary_expression_to_firm(const binary_expression_t *expression) +static ir_node *create_lazy_op(const binary_expression_t *expression) { dbg_info *dbgi = get_dbg_info(&expression->expression.source_position); + type_t *type = expression->expression.datatype; + ir_mode *mode = get_ir_mode(type); + + ir_node *cur_block = get_cur_block(); + + ir_node *one_block = new_immBlock(); + ir_node *one = new_Const(mode, get_mode_one(mode)); + ir_node *jmp_one = new_d_Jmp(dbgi); + + ir_node *zero_block = new_immBlock(); + ir_node *zero = new_Const(mode, get_mode_null(mode)); + ir_node *jmp_zero = new_d_Jmp(dbgi); + + set_cur_block(cur_block); + create_condition_evaluation((const expression_t*) expression, + one_block, zero_block); + mature_immBlock(one_block); + mature_immBlock(zero_block); + + ir_node *common_block = new_immBlock(); + add_immBlock_pred(common_block, jmp_one); + add_immBlock_pred(common_block, jmp_zero); + mature_immBlock(common_block); + + ir_node *in[2] = { one, zero }; + ir_node *val = new_d_Phi(dbgi, 2, in, mode); + + return val; +} + +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); + ir_node *left = expression_to_firm(expression->left); + ir_node *right = expression_to_firm(expression->right); + type_t *type = expression->right->base.datatype; + /* be careful with the modes, because in arithmetic assign nodes only + * the right operand has the mode of the arithmetic already */ + ir_mode *mode = get_ir_mode(type); + left = create_conv(dbgi, left, mode); + ir_node *res = func(dbgi, left, right, mode); + + return res; +} + +static ir_node *pointer_arithmetic(ir_node *const pointer, + ir_node * integer, + type_t *const type, + dbg_info *const dbgi, + const create_arithmetic_func func) +{ + pointer_type_t *const pointer_type = (pointer_type_t*)type; + type_t *const points_to = pointer_type->points_to; + const unsigned elem_size = get_type_size(points_to); + + assert(elem_size >= 1); + if (elem_size > 1) { + integer = create_conv(dbgi, integer, mode_int); + ir_node *const cnst = new_Const_long(mode_int, (long)elem_size); + ir_node *const mul = new_d_Mul(dbgi, integer, cnst, mode_int); + integer = mul; + } + + ir_mode *const mode = get_ir_mode(type); + return func(dbgi, pointer, integer, mode); +} + +static ir_node *create_arithmetic_assign_binop( + const binary_expression_t *expression, create_arithmetic_func func) +{ + dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position); + type_t *const type = skip_typeref(expression->expression.datatype); + ir_node *value; + + if (is_type_pointer(type)) { + ir_node *const pointer = expression_to_firm(expression->left); + ir_node * integer = expression_to_firm(expression->right); + value = pointer_arithmetic(pointer, integer, type, dbgi, func); + } else { + value = create_arithmetic_binop(expression, func); + } + + ir_mode *const mode = get_ir_mode(type); + value = create_conv(dbgi, value, mode); + set_value_for_expression(expression->left, value); + + return value; +} + +static ir_node *create_add(const binary_expression_t *expression) +{ + dbg_info *dbgi = get_dbg_info(&expression->expression.source_position); + ir_node *left = expression_to_firm(expression->left); + ir_node *right = expression_to_firm(expression->right); + type_t *type = expression->expression.datatype; + + 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); + + if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) { + ir_mode *const mode = get_ir_mode(type); + return new_d_Add(dbgi, left, right, mode); + } + + if (is_type_pointer(type_left)) { + return pointer_arithmetic(left, right, type, dbgi, new_d_Add); + } else { + assert(is_type_pointer(type_right)); + return pointer_arithmetic(right, left, type, dbgi, new_d_Add); + } +} + +static ir_node *create_sub(const binary_expression_t *expression) +{ + dbg_info *const dbgi = get_dbg_info(&expression->expression.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); + + 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_int, (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); + return new_d_Proj(dbgi, div, mode, pn_Div_res); + } + + assert(is_type_pointer(type_left)); + return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub); +} + +static ir_node *create_shift(const binary_expression_t *expression) +{ + dbg_info *dbgi = get_dbg_info(&expression->expression.source_position); + ir_node *left = expression_to_firm(expression->left); + ir_node *right = expression_to_firm(expression->right); + type_t *type = expression->expression.datatype; + ir_mode *mode = get_ir_mode(type); + + /* firm always wants the shift count to be unsigned */ + right = create_conv(dbgi, right, mode_uint); + + ir_node *res; + + switch(expression->expression.type) { + case EXPR_BINARY_SHIFTLEFT_ASSIGN: + case EXPR_BINARY_SHIFTLEFT: + res = new_d_Shl(dbgi, left, right, mode); + break; + 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); + + if(is_type_signed(type_left)) { + res = new_d_Shrs(dbgi, left, right, mode); + } else { + res = new_d_Shr(dbgi, left, right, mode); + } + break; + } + default: + panic("create shift op called for non-shift op"); + } + + return res; +} + + +static ir_node *create_divmod(const binary_expression_t *expression) +{ + dbg_info *dbgi = get_dbg_info(&expression->expression.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; + ir_mode *mode = get_ir_mode(type); + left = create_conv(dbgi, left, mode); + ir_node *op; + ir_node *res; + + switch (expression->expression.type) { + 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 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()"); + } + + return res; +} + +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; + ir_mode *const mode = get_ir_mode(type); + + assert(type->type != TYPE_POINTER); + + value = create_conv(dbgi, value, mode); + set_value_for_expression(expression->left, value); + + return value; +} + +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; + ir_mode *const mode = get_ir_mode(type); + + value = create_conv(dbgi, value, mode); + set_value_for_expression(expression->left, value); + + return value; +} + +static ir_node *binary_expression_to_firm(const binary_expression_t *expression) +{ + expression_type_t type = expression->expression.type; - 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: { + 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->expression.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); @@ -874,308 +1543,1706 @@ static ir_node *binary_expression_to_firm(const binary_expression_t *expression) 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 EXPR_BINARY_ADD: + return create_add(expression); + case EXPR_BINARY_SUB: + return create_sub(expression); + case EXPR_BINARY_MUL: + return create_arithmetic_binop(expression, new_d_Mul); + case EXPR_BINARY_BITWISE_AND: + return create_arithmetic_binop(expression, new_d_And); + case EXPR_BINARY_BITWISE_OR: + return create_arithmetic_binop(expression, new_d_Or); + case EXPR_BINARY_BITWISE_XOR: + return create_arithmetic_binop(expression, new_d_Eor); + case EXPR_BINARY_SHIFTLEFT: + case EXPR_BINARY_SHIFTRIGHT: + return create_shift(expression); + case EXPR_BINARY_DIV: + case EXPR_BINARY_MOD: + return create_divmod(expression); + case EXPR_BINARY_LOGICAL_AND: + case EXPR_BINARY_LOGICAL_OR: + return create_lazy_op(expression); + case EXPR_BINARY_COMMA: + expression_to_firm(expression->left); + return expression_to_firm(expression->right); + case EXPR_BINARY_ADD_ASSIGN: + return create_arithmetic_assign_binop(expression, new_d_Add); + case EXPR_BINARY_SUB_ASSIGN: + return create_arithmetic_assign_binop(expression, new_d_Sub); + case EXPR_BINARY_MUL_ASSIGN: + return create_arithmetic_assign_binop(expression, new_d_Mul); + case EXPR_BINARY_DIV_ASSIGN: + return create_arithmetic_assign_divmod(expression); + case EXPR_BINARY_BITWISE_AND_ASSIGN: + return create_arithmetic_assign_binop(expression, new_d_And); + case EXPR_BINARY_BITWISE_OR_ASSIGN: + return create_arithmetic_assign_binop(expression, new_d_Or); + case EXPR_BINARY_BITWISE_XOR_ASSIGN: + return create_arithmetic_assign_binop(expression, new_d_Eor); + case EXPR_BINARY_SHIFTLEFT_ASSIGN: + case EXPR_BINARY_SHIFTRIGHT_ASSIGN: + return create_arithmetic_assign_shift(expression); default: panic("TODO binexpr type"); } } -static ir_node *expression_to_firm(const 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); + ir_node *base_addr = expression_to_firm(expression->array_ref); + ir_node *offset = expression_to_firm(expression->index); + offset = create_conv(dbgi, offset, mode_uint); + + type_t *ref_type = skip_typeref(expression->array_ref->base.datatype); + assert(is_type_pointer(ref_type)); + pointer_type_t *pointer_type = (pointer_type_t*) ref_type; + + unsigned elem_size = get_type_size(pointer_type->points_to); + ir_node *elem_size_const = new_Const_long(mode_uint, elem_size); + ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const, + mode_uint); + ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data); + + return result; +} + +static ir_node *array_access_to_firm( + const array_access_expression_t *expression) +{ + dbg_info *dbgi = get_dbg_info(&expression->expression.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); +} + +static ir_node *sizeof_to_firm(const sizeof_expression_t *expression) +{ + type_t *type = expression->type; + if(type == NULL) { + type = expression->size_expression->base.datatype; + 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); + + return size_node; +} + +static long fold_constant(const expression_t *expression) +{ + 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 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); + + /* 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(); + + /* create the true block */ + ir_node *true_block = new_immBlock(); + + ir_node *true_val = expression_to_firm(expression->true_expression); + ir_node *true_jmp = new_Jmp(); + + /* create the false block */ + ir_node *false_block = new_immBlock(); + + ir_node *false_val = expression_to_firm(expression->false_expression); + ir_node *false_jmp = new_Jmp(); + + /* create the condition evaluation */ + set_cur_block(cur_block); + create_condition_evaluation(expression->condition, true_block, false_block); + mature_immBlock(true_block); + mature_immBlock(false_block); + + /* create the common block */ + ir_node *common_block = new_immBlock(); + add_immBlock_pred(common_block, true_jmp); + add_immBlock_pred(common_block, false_jmp); + mature_immBlock(common_block); + + /* TODO improve static semantics, so either both or no values are NULL */ + if (true_val == NULL || false_val == NULL) + return NULL; + + ir_node *in[2] = { true_val, false_val }; + ir_mode *mode = get_irn_mode(true_val); + assert(get_irn_mode(false_val) == mode); + ir_node *val = new_d_Phi(dbgi, 2, in, mode); + + return val; +} + +static ir_node *select_addr(const select_expression_t *expression) +{ + dbg_info *dbgi = get_dbg_info(&expression->expression.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); + ir_entity *entity = entry->v.entity; + + assert(entity != NULL); + + ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity); + + return sel; +} + +static ir_node *select_to_firm(const select_expression_t *expression) +{ + dbg_info *dbgi = get_dbg_info(&expression->expression.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); +} + +/* Values returned by __builtin_classify_type. */ +typedef enum gcc_type_class +{ + no_type_class = -1, + void_type_class, + integer_type_class, + char_type_class, + enumeral_type_class, + boolean_type_class, + pointer_type_class, + reference_type_class, + offset_type_class, + real_type_class, + complex_type_class, + function_type_class, + method_type_class, + record_type_class, + union_type_class, + array_type_class, + string_type_class, + set_type_class, + file_type_class, + lang_type_class +} 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; + + gcc_type_class tc; + switch (type->type) + { + case TYPE_ATOMIC: { + const atomic_type_t *const atomic_type = &type->atomic; + switch (atomic_type->atype) { + /* should not be reached */ + case ATOMIC_TYPE_INVALID: + tc = no_type_class; + break; + + /* gcc cannot do that */ + case ATOMIC_TYPE_VOID: + tc = void_type_class; + break; + + case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */ + case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */ + case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */ + case ATOMIC_TYPE_SHORT: + case ATOMIC_TYPE_USHORT: + case ATOMIC_TYPE_INT: + case ATOMIC_TYPE_UINT: + case ATOMIC_TYPE_LONG: + case ATOMIC_TYPE_ULONG: + case ATOMIC_TYPE_LONGLONG: + case ATOMIC_TYPE_ULONGLONG: + case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */ + tc = integer_type_class; + break; + + case ATOMIC_TYPE_FLOAT: + case ATOMIC_TYPE_DOUBLE: + case ATOMIC_TYPE_LONG_DOUBLE: + tc = real_type_class; + break; + +#ifdef PROVIDE_COMPLEX + case ATOMIC_TYPE_FLOAT_COMPLEX: + case ATOMIC_TYPE_DOUBLE_COMPLEX: + case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX: + tc = complex_type_class; + break; + case ATOMIC_TYPE_FLOAT_IMAGINARY: + case ATOMIC_TYPE_DOUBLE_IMAGINARY: + case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY: + tc = complex_type_class; + break; +#endif + + default: + panic("Unimplemented case in classify_type_to_firm()."); + } + break; + } + + 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()."); + } + + dbg_info *const dbgi = get_dbg_info(&expr->expression.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) +{ + 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); + } + + return current_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); +} + +static ir_node *va_start_expression_to_firm( + const va_start_expression_t *const expr) +{ + ir_type *const method_type = get_ir_type(current_function_decl->type); + 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); + 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_uint, parm_size); + ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data); + set_value_for_expression(expr->ap, add); + + return NULL; +} + +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); + 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); + + size_t const parm_size = get_type_size(expr->expression.datatype); + ir_node *const cnst = new_Const_long(mode_uint, parm_size); + ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data); + set_value_for_expression(expr->ap, add); + + return res; +} + +static ir_node *dereference_addr(const unary_expression_t *const expression) +{ + assert(expression->expression.type == EXPR_UNARY_DEREFERENCE); + return expression_to_firm(expression->value); +} + +static ir_node *expression_to_addr(const expression_t *expression) +{ + switch(expression->type) { + case EXPR_REFERENCE: + return reference_addr(&expression->reference); + case EXPR_ARRAY_ACCESS: + return array_access_addr(&expression->array_access); + case EXPR_SELECT: + return select_addr(&expression->select); + case EXPR_CALL: + return call_expression_to_firm(&expression->call); + case EXPR_UNARY_DEREFERENCE: { + return dereference_addr(&expression->unary); + } + default: + break; + } + panic("trying to get address of non-lvalue"); +} + +static ir_node *_expression_to_firm(const expression_t *expression) { switch(expression->type) { case EXPR_CONST: - return const_to_firm((const const_t*) expression); + return const_to_firm(&expression->conste); case EXPR_STRING_LITERAL: - return string_literal_to_firm((const string_literal_t*) expression); + return string_literal_to_firm(&expression->string); + case EXPR_WIDE_STRING_LITERAL: + return wide_string_literal_to_firm(&expression->wide_string); case EXPR_REFERENCE: - return reference_expression_to_firm( - (const reference_expression_t*) expression); + return reference_expression_to_firm(&expression->reference); case EXPR_CALL: - return call_expression_to_firm((const call_expression_t*) expression); - case EXPR_UNARY: - return unary_expression_to_firm((const unary_expression_t*) expression); - case EXPR_BINARY: - return binary_expression_to_firm( - (const binary_expression_t*) expression); - default: + return call_expression_to_firm(&expression->call); + EXPR_UNARY_CASES + return unary_expression_to_firm(&expression->unary); + 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); + 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_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_UNKNOWN: + case EXPR_INVALID: break; } - panic("unsupported expression found"); + panic("invalid expression found"); } +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); + } -static void statement_to_firm(statement_t *statement); + return res; +} -static void return_statement_to_firm(return_statement_t *statement) +static ir_node *expression_to_modeb(const expression_t *expression) { - dbg_info *dbgi = get_dbg_info(&statement->statement.source_position); - ir_node *ret; + ir_node *res = _expression_to_firm(expression); + res = create_conv(NULL, res, mode_b); + + return res; +} + +/** + * create a short-circuit expression evaluation that tries to construct + * efficient control flow structures for &&, || and ! expressions + */ +static void create_condition_evaluation(const expression_t *expression, + ir_node *true_block, + ir_node *false_block) +{ + switch(expression->type) { + 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_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; + } + + dbg_info *dbgi = get_dbg_info(&expression->base.source_position); + ir_node *condition = expression_to_modeb(expression); + ir_node *cond = new_d_Cond(dbgi, condition); + ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true); + ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false); + + add_immBlock_pred(true_block, true_proj); + add_immBlock_pred(false_block, false_proj); + + set_cur_block(NULL); +} + + - if(statement->return_value != NULL) { - ir_node *retval = expression_to_firm(statement->return_value); - ir_node *in[1]; +static void create_declaration_entity(declaration_t *declaration, + declaration_type_t declaration_type, + ir_type *parent_type) +{ + ident *const id = new_id_from_str(declaration->symbol->string); + ir_type *const irtype = get_ir_type(declaration->type); + dbg_info *const dbgi = get_dbg_info(&declaration->source_position); + ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi); + set_entity_ld_ident(entity, id); + + declaration->declaration_type = (unsigned char) declaration_type; + 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_type == DECLARATION_TYPE_GLOBAL_VARIABLE) + set_entity_allocation(entity, allocation_static); + /* 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_int, *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 *const id = unique_ident("initializer"); + ir_type *const irtype = get_ir_type(declaration->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); + + ir_graph *const old_current_ir_graph = current_ir_graph; + current_ir_graph = get_const_code_irg(); + + type_t *const 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 *const src_addr = create_symconst(dbgi, init_entity); + ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype); + + ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular); + 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 *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); + + declaration->declaration_type = DECLARATION_TYPE_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_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; + + ir_type *func_irtype = get_ir_type(current_function_decl->type); + + dbg_info *dbgi = get_dbg_info(&statement->statement.source_position); + + 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; + } else { + ir_mode *mode; + if(is_compound_type(res_type)) { + mode = mode_P_data; + } else { + mode = get_type_mode(res_type); + } + in[0] = new_Unknown(mode); + } + in_len = 1; + } else { + /* build return_value for its side effects */ + if(statement->return_value != NULL) { + expression_to_firm(statement->return_value); + } + in_len = 0; + } + + ir_node *store = get_store(); + ir_node *ret = new_d_Return(dbgi, store, in_len, in); + + ir_node *end_block = get_irg_end_block(current_ir_graph); + add_immBlock_pred(end_block, ret); + + set_cur_block(NULL); +} + +static ir_node *expression_statement_to_firm(expression_statement_t *statement) +{ + if(get_cur_block() == NULL) + return NULL; + + return expression_to_firm(statement->expression); +} + +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); + + if(statement->base.next == NULL + && statement->type == STATEMENT_EXPRESSION) { + result = expression_statement_to_firm( + (expression_statement_t*) statement); + break; + } + statement_to_firm(statement); + } + + return result; +} + +static void create_local_declaration(declaration_t *declaration) +{ + 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_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); + } + return; + case STORAGE_CLASS_TYPEDEF: + case STORAGE_CLASS_THREAD: + case STORAGE_CLASS_THREAD_EXTERN: + case STORAGE_CLASS_THREAD_STATIC: + return; + } + panic("invalid storage class found"); +} + +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) { + create_local_variable(declaration); + } +} + +static void if_statement_to_firm(if_statement_t *statement) +{ + ir_node *cur_block = get_cur_block(); + + ir_node *fallthrough_block = new_immBlock(); + + /* the true (blocks) */ + ir_node *true_block; + if (statement->true_statement != NULL) { + true_block = new_immBlock(); + statement_to_firm(statement->true_statement); + if(get_cur_block() != NULL) { + ir_node *jmp = new_Jmp(); + add_immBlock_pred(fallthrough_block, jmp); + } + } else { + true_block = fallthrough_block; + } + + /* the false (blocks) */ + ir_node *false_block; + if(statement->false_statement != NULL) { + false_block = new_immBlock(); + + statement_to_firm(statement->false_statement); + if(get_cur_block() != NULL) { + ir_node *jmp = new_Jmp(); + add_immBlock_pred(fallthrough_block, jmp); + } + } else { + false_block = fallthrough_block; + } + + /* create the condition */ + if(cur_block != NULL) { + set_cur_block(cur_block); + create_condition_evaluation(statement->condition, true_block, + false_block); + } + + mature_immBlock(true_block); + if(false_block != fallthrough_block) { + mature_immBlock(false_block); + } + mature_immBlock(fallthrough_block); + + set_cur_block(fallthrough_block); +} + +static void while_statement_to_firm(while_statement_t *statement) +{ + ir_node *jmp = NULL; + if(get_cur_block() != NULL) { + jmp = new_Jmp(); + } + + /* create the header block */ + ir_node *header_block = new_immBlock(); + if(jmp != NULL) { + add_immBlock_pred(header_block, jmp); + } + + /* the false block */ + ir_node *false_block = new_immBlock(); + + /* the loop body */ + ir_node *body_block; + if (statement->body != NULL) { + ir_node *old_continue_label = continue_label; + ir_node *old_break_label = break_label; + continue_label = header_block; + break_label = false_block; + + body_block = new_immBlock(); + statement_to_firm(statement->body); + + assert(continue_label == header_block); + assert(break_label == false_block); + continue_label = old_continue_label; + break_label = old_break_label; + + if(get_cur_block() != NULL) { + jmp = new_Jmp(); + add_immBlock_pred(header_block, jmp); + } + } else { + body_block = header_block; + } + + /* create the condition */ + set_cur_block(header_block); + + create_condition_evaluation(statement->condition, body_block, false_block); + mature_immBlock(body_block); + mature_immBlock(false_block); + mature_immBlock(header_block); + + set_cur_block(false_block); +} + +static void do_while_statement_to_firm(do_while_statement_t *statement) +{ + ir_node *jmp = NULL; + if(get_cur_block() != NULL) { + jmp = new_Jmp(); + } + + /* create the header block */ + ir_node *header_block = new_immBlock(); + + /* the false block */ + ir_node *false_block = new_immBlock(); + + /* the loop body */ + ir_node *body_block = new_immBlock(); + if(jmp != NULL) { + add_immBlock_pred(body_block, jmp); + } + + if (statement->body != NULL) { + ir_node *old_continue_label = continue_label; + ir_node *old_break_label = break_label; + continue_label = header_block; + break_label = false_block; + + statement_to_firm(statement->body); + + assert(continue_label == header_block); + assert(break_label == false_block); + continue_label = old_continue_label; + break_label = old_break_label; + + if (get_cur_block() == NULL) { + mature_immBlock(header_block); + mature_immBlock(body_block); + mature_immBlock(false_block); + return; + } + } + + ir_node *body_jmp = new_Jmp(); + add_immBlock_pred(header_block, body_jmp); + mature_immBlock(header_block); + + /* create the condition */ + set_cur_block(header_block); + + create_condition_evaluation(statement->condition, body_block, false_block); + mature_immBlock(body_block); + mature_immBlock(false_block); + mature_immBlock(header_block); + + set_cur_block(false_block); +} + +static void for_statement_to_firm(for_statement_t *statement) +{ + ir_node *jmp = NULL; + if (get_cur_block() != NULL) { + if(statement->initialisation != NULL) { + expression_to_firm(statement->initialisation); + } + + /* create declarations */ + declaration_t *declaration = statement->context.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) { + expression_to_firm(statement->step); + } + ir_node *const step_jmp = new_Jmp(); + + /* create the header block */ + ir_node *const header_block = new_immBlock(); + if (jmp != NULL) { + add_immBlock_pred(header_block, jmp); + } + add_immBlock_pred(header_block, step_jmp); + + /* the false block */ + ir_node *const false_block = new_immBlock(); + + /* the loop body */ + ir_node * body_block; + if (statement->body != NULL) { + ir_node *const old_continue_label = continue_label; + ir_node *const old_break_label = break_label; + continue_label = step_block; + break_label = false_block; + + 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; + } - in[0] = retval; - ret = new_d_Return(dbgi, get_store(), 1, in); + /* create the condition */ + set_cur_block(header_block); + if (statement->condition != NULL) { + create_condition_evaluation(statement->condition, body_block, + false_block); } else { - ret = new_d_Return(dbgi, get_store(), 0, NULL); + keep_alive(header_block); + jmp = new_Jmp(); + add_immBlock_pred(body_block, jmp); } - ir_node *end_block = get_irg_end_block(current_ir_graph); - add_immBlock_pred(end_block, ret); - set_cur_block(NULL); -} + mature_immBlock(body_block); + mature_immBlock(false_block); + mature_immBlock(step_block); + mature_immBlock(header_block); + mature_immBlock(false_block); -static void compound_statement_to_firm(compound_statement_t *compound) -{ - statement_t *statement = compound->statements; - for( ; statement != NULL; statement = statement->next) { - //context2firm(&statement->context); - statement_to_firm(statement); - } + set_cur_block(false_block); } -static void expression_statement_to_firm(expression_statement_t *statement) +static void create_jump_statement(const statement_t *statement, + ir_node *target_block) { - expression_to_firm(statement->expression); + if(get_cur_block() == NULL) + return; + + dbg_info *dbgi = get_dbg_info(&statement->base.source_position); + ir_node *jump = new_d_Jmp(dbgi); + add_immBlock_pred(target_block, jump); + + set_cur_block(NULL); } -static void if_statement_to_firm(if_statement_t *statement) +static void switch_statement_to_firm(const switch_statement_t *statement) { - dbg_info *dbgi = get_dbg_info(&statement->statement.source_position); - ir_node *condition = expression_to_firm(statement->condition); - assert(condition != NULL); + dbg_info *dbgi = get_dbg_info(&statement->statement.source_position); - /* make sure we have a mode_b condition */ - condition = create_conv(dbgi, condition, mode_b); + ir_node *expression = expression_to_firm(statement->expression); + ir_node *cond = new_d_Cond(dbgi, expression); + ir_node *break_block = new_immBlock(); - ir_node *cond = new_d_Cond(dbgi, condition); - ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true); - ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false); + set_cur_block(NULL); - ir_node *fallthrough_block = new_immBlock(); + ir_node *const old_switch_cond = current_switch_cond; + ir_node *const old_break_label = break_label; + const bool old_saw_default_label = saw_default_label; + current_switch_cond = cond; + break_label = break_block; - /* the true (blocks) */ - ir_node *true_block = new_immBlock(); - add_immBlock_pred(true_block, true_proj); - mature_immBlock(true_block); + statement_to_firm(statement->body); - statement_to_firm(statement->true_statement); if(get_cur_block() != NULL) { ir_node *jmp = new_Jmp(); - add_immBlock_pred(fallthrough_block, jmp); + add_immBlock_pred(break_block, jmp); } - /* the false (blocks) */ - if(statement->false_statement != NULL) { - ir_node *false_block = new_immBlock(); - add_immBlock_pred(false_block, false_proj); - mature_immBlock(false_block); - - statement_to_firm(statement->false_statement); - if(get_cur_block() != NULL) { - ir_node *jmp = new_Jmp(); - add_immBlock_pred(fallthrough_block, jmp); - } - } else { - add_immBlock_pred(fallthrough_block, false_proj); + if (!saw_default_label) { + set_cur_block(get_nodes_block(cond)); + ir_node *const proj = new_d_defaultProj(dbgi, cond, + MAGIC_DEFAULT_PN_NUMBER); + add_immBlock_pred(break_block, proj); } - mature_immBlock(fallthrough_block); - set_cur_block(fallthrough_block); + assert(current_switch_cond == cond); + assert(break_label == break_block); + current_switch_cond = old_switch_cond; + break_label = old_break_label; + saw_default_label = old_saw_default_label; + + mature_immBlock(break_block); + set_cur_block(break_block); } -static void while_statement_to_firm(while_statement_t *statement) +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->statement.source_position); - /* create the header block */ - ir_node *jmp = new_Jmp(); - ir_node *header_block = new_immBlock(); - add_immBlock_pred(header, jmp); + 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); + } else { + saw_default_label = true; + proj = new_d_defaultProj(dbgi, current_switch_cond, + MAGIC_DEFAULT_PN_NUMBER); + } - /* create the condition */ - ir_node *condition = expression_to_firm(statement->condition); - assert(condition != NULL); - /* make sure we have a mode_b condition */ - condition = create_conv(dbgi, condition, mode_b); + ir_node *block = new_immBlock(); + if (fallthrough != NULL) { + add_immBlock_pred(block, fallthrough); + } + add_immBlock_pred(block, proj); + mature_immBlock(block); - ir_node *cond = new_d_Cond(dbgi, condition); - ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true); - ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false); + statement_to_firm(statement->label_statement); +} - /* the loop body */ - ir_node *body_block = new_immBlock(); - add_immBlock_pred(body_block, true_proj); - mature_immBlock(true_block); +static ir_node *get_label_block(declaration_t *label) +{ + assert(label->namespc == NAMESPACE_LABEL); - statement_to_firm(statement->true_statement); - if(get_cur_block() != NULL) { - ir_node *jmp = new_Jmp(); - add_immBlock_pred(fallthrough_block, jmp); + if(label->declaration_type == DECLARATION_TYPE_LABEL_BLOCK) { + return label->v.block; } + assert(label->declaration_type == DECLARATION_TYPE_UNKNOWN); - /* the false (blocks) */ - if(statement->false_statement != NULL) { - ir_node *false_block = new_immBlock(); - add_immBlock_pred(false_block, false_proj); - mature_immBlock(false_block); + ir_node *old_cur_block = get_cur_block(); + ir_node *block = new_immBlock(); + set_cur_block(old_cur_block); - statement_to_firm(statement->false_statement); - if(get_cur_block() != NULL) { - ir_node *jmp = new_Jmp(); - add_immBlock_pred(fallthrough_block, jmp); - } - } else { - add_immBlock_pred(fallthrough_block, false_proj); - } - mature_immBlock(fallthrough_block); + label->declaration_type = DECLARATION_TYPE_LABEL_BLOCK; + label->v.block = block; - set_cur_block(fallthrough_block); + ARR_APP1(ir_node *, imature_blocks, block); + + return block; } -static void create_declaration_entity(declaration_t *declaration, - declaration_type_t declaration_type, - ir_type *parent_type) +static void label_to_firm(const label_statement_t *statement) { - 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); + ir_node *block = get_label_block(statement->label); - declaration->declaration_type = declaration_type; - declaration->v.entity = entity; - set_entity_variability(entity, variability_uninitialized); - /* TODO: visibility? */ + if(get_cur_block() != NULL) { + ir_node *jmp = new_Jmp(); + add_immBlock_pred(block, jmp); + } + + set_cur_block(block); + keep_alive(block); + + statement_to_firm(statement->label_statement); } -static void create_initializer(declaration_t *declaration) +static void goto_to_firm(const goto_statement_t *statement) { - initializer_t *initializer = declaration->init.initializer; - if(initializer == NULL) + if(get_cur_block() == NULL) return; - if(initializer->type == INITIALIZER_VALUE) { - assert(initializer->designator == NULL); - assert(initializer->next == NULL); - ir_node *init_node = expression_to_firm(initializer->v.value); + ir_node *block = get_label_block(statement->label); + ir_node *jmp = new_Jmp(); + add_immBlock_pred(block, jmp); - if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) { - set_value(declaration->v.value_number, init_node); - } else { - panic("initializer not completely implemented yet"); - } - } else { - assert(initializer->type == INITIALIZER_LIST); - panic("list initializer not supported yet"); - } + set_cur_block(NULL); } -static void create_local_variable(declaration_t *declaration) +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; + +#if 0 +static void asm_statement_to_firm(const asm_statement_t *statement) { - bool needs_entity = declaration->address_taken; + bool needs_memory = false; - assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN); + 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; + } - 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; + 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); } - create_initializer(declaration); -} + /* 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); -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 = declaration->type; + needs_memory |= supports_memop; + if(supports_memop) { - switch(declaration->storage_class) { - case STORAGE_CLASS_TYPEDEF: - continue; - case STORAGE_CLASS_STATIC: - panic("static local vars not implemented yet"); - 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(type->type == TYPE_FUNCTION) { - panic("nested functions not supported yet"); - } else { - create_local_variable(declaration); - } - continue; } - panic("invalid storage class found"); } + } +#endif static void statement_to_firm(statement_t *statement) { switch(statement->type) { + case STATEMENT_INVALID: + panic("invalid statement found"); case STATEMENT_COMPOUND: - compound_statement_to_firm((compound_statement_t*) statement); + compound_statement_to_firm(&statement->compound); return; case STATEMENT_RETURN: - return_statement_to_firm((return_statement_t*) statement); + return_statement_to_firm(&statement->returns); return; case STATEMENT_EXPRESSION: - expression_statement_to_firm((expression_statement_t*) statement); + expression_statement_to_firm(&statement->expression); return; case STATEMENT_IF: - if_statement_to_firm((if_statement_t*) statement); + if_statement_to_firm(&statement->ifs); + return; + case STATEMENT_WHILE: + while_statement_to_firm(&statement->whiles); + return; + case STATEMENT_DO_WHILE: + do_while_statement_to_firm(&statement->do_while); return; case STATEMENT_DECLARATION: - declaration_statement_to_firm((declaration_statement_t*) statement); + declaration_statement_to_firm(&statement->declaration); return; - default: + case STATEMENT_BREAK: + create_jump_statement(statement, break_label); + return; + case STATEMENT_CONTINUE: + create_jump_statement(statement, continue_label); + return; + case STATEMENT_SWITCH: + switch_statement_to_firm(&statement->switchs); + return; + case STATEMENT_CASE_LABEL: + case_label_to_firm(&statement->case_label); + return; + case STATEMENT_FOR: + for_statement_to_firm(&statement->fors); + return; + case STATEMENT_LABEL: + label_to_firm(&statement->label); + return; + case STATEMENT_GOTO: + goto_to_firm(&statement->gotos); + return; + case STATEMENT_ASM: + //asm_statement_to_firm(&statement->asms); + //return; break; } panic("Statement not implemented\n"); } +static int count_local_declarations(const declaration_t * decl, + const declaration_t *const end) +{ + int count = 0; + for (; decl != end; decl = decl->next) { + 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; + } + } + return count; +} + +static int count_decls_in_expr(const expression_t *expr) { + if (expr != NULL && expr->base.type == EXPR_STATEMENT) + return count_decls_in_stmts(expr->statement.statement); + 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) { + case STATEMENT_DECLARATION: { + const declaration_statement_t *const decl_stmt = &stmt->declaration; + count += count_local_declarations(decl_stmt->declarations_begin, + decl_stmt->declarations_end->next); + break; + } + + case STATEMENT_COMPOUND: { + const compound_statement_t *const comp = + (const compound_statement_t*)stmt; + count += count_decls_in_stmts(comp->statements); + break; + } + + case STATEMENT_IF: { + const if_statement_t *const if_stmt = &stmt->ifs; + count += count_decls_in_expr(if_stmt->condition); + count += count_decls_in_stmts(if_stmt->true_statement); + count += count_decls_in_stmts(if_stmt->false_statement); + break; + } + + case STATEMENT_SWITCH: { + const switch_statement_t *const switch_stmt = &stmt->switchs; + count += count_decls_in_expr(switch_stmt->expression); + count += count_decls_in_stmts(switch_stmt->body); + break; + } + + case STATEMENT_LABEL: { + const label_statement_t *const label_stmt = &stmt->label; + count += count_decls_in_stmts(label_stmt->label_statement); + break; + } + + case STATEMENT_WHILE: { + const while_statement_t *const while_stmt = &stmt->whiles; + count += count_decls_in_expr(while_stmt->condition); + count += count_decls_in_stmts(while_stmt->body); + break; + } + + case STATEMENT_DO_WHILE: { + const do_while_statement_t *const do_while_stmt = &stmt->do_while; + count += count_decls_in_expr(do_while_stmt->condition); + count += count_decls_in_stmts(do_while_stmt->body); + break; + } + + case STATEMENT_FOR: { + const for_statement_t *const for_stmt = &stmt->fors; + count += count_local_declarations(for_stmt->context.declarations, NULL); + count += count_decls_in_expr(for_stmt->initialisation); + count += count_decls_in_expr(for_stmt->condition); + count += count_decls_in_expr(for_stmt->step); + count += count_decls_in_stmts(for_stmt->body); + break; + } + + case STATEMENT_ASM: + case STATEMENT_BREAK: + case STATEMENT_CASE_LABEL: + case STATEMENT_CONTINUE: + break; + + case STATEMENT_EXPRESSION: { + const expression_statement_t *expr_stmt = &stmt->expression; + count += count_decls_in_expr(expr_stmt->expression); + break; + } + + case STATEMENT_GOTO: + case STATEMENT_INVALID: + break; + + case STATEMENT_RETURN: { + const return_statement_t *ret_stmt = &stmt->returns; + count += count_decls_in_expr(ret_stmt->return_value); + break; + } + } + } + return count; +} + static int get_function_n_local_vars(declaration_t *declaration) { - (void) declaration; - /* TODO */ - return 30; + int count = 0; + + /* count parameters */ + count += count_local_declarations(declaration->context.declarations, NULL); + + /* count local variables declared in body */ + count += count_decls_in_stmts(declaration->init.statement); + + return count; } static void initialize_function_parameters(declaration_t *declaration) { - ir_graph *irg = current_ir_graph; - ir_node *args = get_irg_args(irg); - ir_node *start_block = get_irg_start_block(irg); + ir_graph *irg = current_ir_graph; + ir_node *args = get_irg_args(irg); + ir_node *start_block = get_irg_start_block(irg); + ir_type *function_irtype = get_ir_type(declaration->type); int n = 0; declaration_t *parameter = declaration->context.declarations; - for( ; parameter != NULL; parameter = parameter->next) { + for( ; parameter != NULL; parameter = parameter->next, ++n) { assert(parameter->declaration_type == DECLARATION_TYPE_UNKNOWN); + type_t *type = skip_typeref(parameter->type); - if(parameter->address_taken) { - panic("address take from parameter not implemented yet"); + bool needs_entity = parameter->address_taken; + assert(!is_type_array(type)); + if(is_type_compound(type)) { + needs_entity = true; + } + + if(needs_entity) { + ir_entity *entity = get_method_value_param_ent(function_irtype, n); + ident *id = new_id_from_str(parameter->symbol->string); + set_entity_ident(entity, id); + + parameter->declaration_type + = DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY; + parameter->v.entity = entity; + continue; } ir_mode *mode = get_ir_mode(parameter->type); long pn = n; ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn); - ++n; parameter->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE; parameter->v.value_number = next_value_number_function; @@ -1185,16 +3252,62 @@ static void initialize_function_parameters(declaration_t *declaration) } } +/** + * 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 *entity = get_function_entity(declaration); + ir_entity *function_entity = get_function_entity(declaration); if(declaration->init.statement == NULL) return; - int n_local_vars = get_function_n_local_vars(declaration); - ir_graph *irg = new_ir_graph(entity, n_local_vars); - ir_node *first_block = get_cur_block(); + current_function_decl = declaration; + current_function_name = NULL; + + assert(imature_blocks == NULL); + imature_blocks = NEW_ARR_F(ir_node*, 0); + + int n_local_vars = get_function_n_local_vars(declaration); + ir_graph *irg = new_ir_graph(function_entity, n_local_vars); + ir_node *first_block = get_cur_block(); + + /* set inline flags */ + if (declaration->is_inline) + set_irg_inline_property(irg, irg_inline_recomended); + handle_decl_modifier_irg(irg, declaration->decl_modifiers); next_value_number_function = 0; initialize_function_parameters(declaration); @@ -1205,10 +3318,41 @@ static void create_function(declaration_t *declaration) /* do we have a return statement yet? */ if(get_cur_block() != NULL) { - ir_node *ret = new_Return(get_store(), 0, NULL); + type_t *type = skip_typeref(declaration->type); + assert(is_type_function(type)); + const function_type_t *func_type = &type->function; + const type_t *return_type + = skip_typeref(func_type->return_type); + + ir_node *ret; + if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) { + ret = new_Return(get_store(), 0, NULL); + } else { + ir_mode *mode; + if(is_type_scalar(return_type)) { + mode = get_ir_mode(func_type->return_type); + } else { + mode = mode_P_data; + } + + ir_node *in[1]; + /* §5.1.2.2.3 main implicitly returns 0 */ + if (strcmp(declaration->symbol->string, "main") == 0) { + in[0] = new_Const(mode, get_mode_null(mode)); + } else { + in[0] = new_Unknown(mode); + } + ret = new_Return(get_store(), 1, in); + } add_immBlock_pred(end_block, ret); } + for(int i = 0; i < ARR_LEN(imature_blocks); ++i) { + mature_immBlock(imature_blocks[i]); + } + DEL_ARR_F(imature_blocks); + imature_blocks = NULL; + mature_immBlock(first_block); mature_immBlock(end_block); @@ -1229,7 +3373,9 @@ static void create_function(declaration_t *declaration) int misalign = 0; if(align > 0) { misalign = offset % align; - offset += misalign; + if(misalign > 0) { + offset += align - misalign; + } } set_entity_offset(entity, offset); @@ -1242,23 +3388,130 @@ static void create_function(declaration_t *declaration) 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) { + /* first pass: create declarations */ declaration_t *declaration = context->declarations; for( ; declaration != NULL; declaration = declaration->next) { - type_t *type = declaration->type; - if(type->type == TYPE_FUNCTION) { - create_function(declaration); + if(declaration->namespc != NAMESPACE_NORMAL) + continue; + if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY + || declaration->storage_class == STORAGE_CLASS_TYPEDEF) + continue; + if(declaration->symbol == NULL) + continue; + + type_t *type = skip_typeref(declaration->type); + if(is_type_function(type)) { + get_function_entity(declaration); } else { - /* TODO... */ + create_global_variable(declaration); } } + + /* second pass: create code */ + declaration = context->declarations; + for( ; declaration != NULL; declaration = declaration->next) { + if(declaration->namespc != NAMESPACE_NORMAL) + continue; + if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY + || declaration->storage_class == STORAGE_CLASS_TYPEDEF) + continue; + if(declaration->symbol == NULL) + continue; + + type_t *type = declaration->type; + if(type->type != TYPE_FUNCTION) + continue; + + create_function(declaration); + } +} + +void init_ast2firm(void) +{ + obstack_init(&asm_obst); + init_atomic_modes(); +} + +void exit_ast2firm(void) +{ + obstack_free(&asm_obst, NULL); } void translation_unit_to_firm(translation_unit_t *unit) { - /* remove me later TODO FIXME */ - (void) get_type_size; + type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST); + type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE); + type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE); + + ir_type_int = get_ir_type(type_int); + ir_type_const_char = get_ir_type(type_const_char); + ir_type_wchar_t = get_ir_type(type_wchar_t); + ir_type_void = get_ir_type(type_int); /* we don't have a real void + type in firm */ + + type_void->base.firm_type = ir_type_void; + + /* just to be sure */ + continue_label = NULL; + break_label = NULL; + current_switch_cond = NULL; context_to_firm(& unit->context); }