X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ast2firm.c;h=11f3bd7892770fa06723e492ddc7e5798f693604;hb=11839325c556fdf4b749c536bb0966bb0565c4d7;hp=62793e5ed3d6ffc4f99a634364e1e738b9097965;hpb=22420f9404b76d3ab2536c7d3903cbcf05a792a8;p=cparser diff --git a/ast2firm.c b/ast2firm.c index 62793e5..11f3bd7 100644 --- a/ast2firm.c +++ b/ast2firm.c @@ -12,6 +12,7 @@ #include "ast2firm.h" #include "adt/error.h" +#include "adt/array.h" #include "token_t.h" #include "type_t.h" #include "ast_t.h" @@ -27,10 +28,17 @@ static type_t *type_const_char; static type_t *type_void; static type_t *type_int; -static int next_value_number_function; -static ir_node *continue_label; -static ir_node *break_label; -static ir_node *current_switch_cond; +static symbol_t *symbol_alloca; + +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; typedef enum declaration_type_t { DECLARATION_TYPE_UNKNOWN, @@ -38,16 +46,10 @@ 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_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); ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos) @@ -86,8 +88,8 @@ const char *retrieve_dbg(const dbg_info *dbg, unsigned *line) 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); + 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); @@ -97,6 +99,8 @@ void init_ast2firm(void) ir_type_void, mode_P_data); type_void->firm_type = ir_type_void; + + symbol_alloca = symbol_table_insert("__builtin_alloca"); } void exit_ast2firm(void) @@ -109,38 +113,11 @@ 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) -{ - 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; - } - - return type; -} - static ir_mode *get_atomic_mode(const atomic_type_t* atomic_type) { switch(atomic_type->atype) { @@ -184,8 +161,8 @@ static ir_mode *get_atomic_mode(const atomic_type_t* atomic_type) break; #endif case ATOMIC_TYPE_VOID: - panic("tried to get mode from void type"); - break; + /* firm has no real void... */ + return mode_Is; case ATOMIC_TYPE_INVALID: break; } @@ -287,10 +264,10 @@ 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); @@ -298,8 +275,7 @@ static ir_type *create_atomic_type(type2firm_env_t *env, 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; @@ -309,26 +285,26 @@ static ir_type *create_method_type(type2firm_env_t *env, 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); + ir_type *restype = get_ir_type(result_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; @@ -340,39 +316,41 @@ 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); + + ident *id = unique_ident("array"); + ir_type *ir_type = new_type_array(id, 1, ir_element_type); - /* TODO... */ - int n_elements = 0; - panic("TODO arraytpye size not implemented yet"); + if(type->size != NULL) { + int n_elements = fold_constant(type->size); - ir_type *ir_type = new_type_array(unique_ident("array"), 1, ir_element_type); - set_array_bounds_int(ir_type, 0, 0, n_elements); + 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); + 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); } - 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; @@ -389,13 +367,17 @@ 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); set_entity_offset(entity, offset); @@ -421,7 +403,7 @@ 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; @@ -439,8 +421,11 @@ 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); @@ -469,7 +454,7 @@ 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_type *get_ir_type(type_t *type) { assert(type != NULL); @@ -483,22 +468,22 @@ static ir_type *_get_ir_type(type2firm_env_t *env, type_t *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((atomic_type_t*) type); break; case TYPE_FUNCTION: - firm_type = create_method_type(env, (function_type_t*) type); + firm_type = create_method_type((function_type_t*) type); break; case TYPE_POINTER: - firm_type = create_pointer_type(env, (pointer_type_t*) type); + firm_type = create_pointer_type((pointer_type_t*) type); break; case TYPE_ARRAY: - firm_type = create_array_type(env, (array_type_t*) type); + firm_type = create_array_type((array_type_t*) type); break; case TYPE_COMPOUND_STRUCT: - firm_type = create_struct_type(env, (compound_type_t*) type); + firm_type = create_struct_type((compound_type_t*) type); break; case TYPE_COMPOUND_UNION: - firm_type = create_union_type(env, (compound_type_t*) type); + firm_type = create_union_type((compound_type_t*) type); break; case TYPE_ENUM: firm_type = ir_type_int; @@ -512,25 +497,20 @@ 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->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; + } + + ir_mode *mode = get_type_mode(irtype); assert(mode != NULL); return mode; } @@ -548,11 +528,10 @@ 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); 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); @@ -569,7 +548,6 @@ static ir_entity* get_function_entity(declaration_t *declaration) static ir_node *expression_to_firm(const expression_t *expression); -static ir_node *_expression_to_firm(const expression_t *expression); static dbg_info *get_dbg_info(const source_position_t *pos) { @@ -581,11 +559,18 @@ static ir_node *const_to_firm(const const_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", cnst->v.int_value); + } + tv = new_tarval_from_str(buf, len, mode); } return new_d_Const(dbgi, mode, tv); @@ -599,29 +584,30 @@ 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); + ir_entity *const entity = new_entity(global_type, id, type); set_entity_ld_ident(entity, id); set_entity_variability(entity, variability_constant); - 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); } @@ -629,44 +615,155 @@ 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); + dbg_info *const dbgi = get_dbg_info(src_pos); return create_symconst(dbgi, entity); } +static ir_node *string_literal_to_firm(const string_literal_t* literal) +{ + return string_to_firm(&literal->expression.source_position, "Lstr", + literal->value); +} + +static ir_node *deref_address(type_t *const type, ir_node *const addr, + dbg_info *const dbgi) +{ + switch (type->type) { + case TYPE_ARRAY: + case TYPE_COMPOUND_STRUCT: + case TYPE_COMPOUND_UNION: + return addr; + + default: { + ir_mode *const mode = get_ir_mode(type); + 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 *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: break; - case DECLARATION_TYPE_LOCAL_VARIABLE: + 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_entity *entity = declaration->v.entity; + ir_node *symconst = create_symconst(dbgi, entity); + return deref_address(type, symconst, 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); + return deref_address(type, 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: + 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_entity *entity = declaration->v.entity; + ir_node *symconst = create_symconst(dbgi, entity); + return symconst; + } + 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_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 + = (builtin_symbol_expression_t*) call->function; + symbol_t *symbol = builtin->symbol; + + if(symbol == symbol_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; + } else { + panic("Unsupported builtin found\n"); + } +} + static ir_node *call_expression_to_firm(const call_expression_t *call) { assert(get_cur_block() != NULL); expression_t *function = call->function; + if(function->type == EXPR_BUILTIN_SYMBOL) { + 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; + function_type_t *function_type; + if (function->datatype->type == TYPE_POINTER) { + pointer_type_t *const ptr_type = (pointer_type_t*)function->datatype; + assert(ptr_type->points_to->type == TYPE_FUNCTION); + function_type = (function_type_t*)ptr_type->points_to; + } else { + assert(function->datatype->type == TYPE_FUNCTION); + function_type = (function_type_t*)function->datatype; + } int n_parameters = 0; call_argument_t *argument = call->arguments; @@ -676,7 +773,7 @@ static ir_node *call_expression_to_firm(const call_expression_t *call) 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); @@ -731,20 +828,13 @@ 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); - - return load_res; -} +static void statement_to_firm(statement_t *statement); +static ir_node *compound_statement_to_firm(compound_statement_t *compound); static ir_node *expression_to_addr(const expression_t *expression); +static void create_condition_evaluation(const expression_t *expression, + ir_node *true_block, + ir_node *false_block); static void set_value_for_expression(const expression_t *expression, ir_node *value) @@ -773,7 +863,7 @@ 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) { @@ -786,11 +876,56 @@ 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 *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); + expression_t *value = expression->value; + + ir_node *value_node = expression_to_firm(value); + + ir_node *offset; + if(type->type == TYPE_POINTER) { + pointer_type_t *pointer_type = (pointer_type_t*) type; + unsigned elem_size = get_type_size(pointer_type->points_to); + offset = new_Const_long(mode_Is, elem_size); + } else { + assert(is_type_arithmetic(type)); + offset = new_Const(mode, get_mode_one(mode)); + } + + switch(expression->type) { + case UNEXPR_POSTFIX_INCREMENT: { + ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode); + set_value_for_expression(value, new_value); + return value_node; + } + case UNEXPR_POSTFIX_DECREMENT: { + ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode); + set_value_for_expression(value, new_value); + return value_node; + } + case UNEXPR_PREFIX_INCREMENT: { + ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode); + set_value_for_expression(value, new_value); + return new_value; + } + case UNEXPR_PREFIX_DECREMENT: { + 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 = expression->expression.datatype; - ir_mode *mode = get_ir_mode(type); + type_t *type = skip_typeref(expression->expression.datatype); if(expression->type == UNEXPR_TAKE_ADDRESS) return expression_to_addr(expression->value); @@ -800,48 +935,31 @@ static ir_node *unary_expression_to_firm(const unary_expression_t *expression) switch(expression->type) { case UNEXPR_NEGATE: - return new_d_Minus(dbgi, value_node, mode); + return new_d_Minus(dbgi, value_node, get_ir_mode(type)); case UNEXPR_PLUS: return value_node; case UNEXPR_BITWISE_NEGATE: - return new_d_Not(dbgi, value_node, mode); - case UNEXPR_NOT: + return new_d_Not(dbgi, value_node, get_ir_mode(type)); + case UNEXPR_NOT: { if(get_irn_mode(value_node) != mode_b) { value_node = create_conv(dbgi, value_node, mode_b); } value_node = new_d_Not(dbgi, value_node, mode_b); + ir_mode *const mode = get_ir_mode(type); if(mode != mode_b) { 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 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 UNEXPR_DEREFERENCE: + return deref_address(type, value_node, dbgi); + case UNEXPR_POSTFIX_INCREMENT: + case UNEXPR_POSTFIX_DECREMENT: + case UNEXPR_PREFIX_INCREMENT: + case UNEXPR_PREFIX_DECREMENT: + return create_incdec(expression); case UNEXPR_CAST: - return create_conv(dbgi, value_node, mode); + return create_conv(dbgi, value_node, get_ir_mode(type)); case UNEXPR_TAKE_ADDRESS: case UNEXPR_INVALID: @@ -867,74 +985,262 @@ static long get_pnc(binary_expression_type_t type) static ir_node *create_lazy_op(const binary_expression_t *expression) { - bool is_or = (expression->type == BINEXPR_LOGICAL_OR); - assert(is_or || expression->type == BINEXPR_LOGICAL_AND); - dbg_info *dbgi = get_dbg_info(&expression->expression.source_position); - ir_node *val1 = expression_to_firm(expression->left); - val1 = create_conv(dbgi, val1, mode_b); + type_t *type = expression->expression.datatype; + ir_mode *mode = get_ir_mode(type); - ir_node *cond = new_d_Cond(dbgi, val1); - 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); + ir_node *cur_block = get_cur_block(); - ir_node *fallthrough_block = new_immBlock(); + 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->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; +} - /* the true case */ - ir_node *calc_val2_block = new_immBlock(); - if(is_or) { - add_immBlock_pred(calc_val2_block, false_proj); +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_Is); + ir_node *const cnst = new_Const_long(mode_Is, (long)elem_size); + ir_node *const mul = new_d_Mul(dbgi, integer, cnst, mode_Is); + integer = 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 = expression->expression.datatype; + ir_node *value; + + if (type->type == TYPE_POINTER) { + 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 { - add_immBlock_pred(calc_val2_block, true_proj); + value = create_arithmetic_binop(expression, func); } - mature_immBlock(calc_val2_block); + ir_mode *const mode = get_ir_mode(type); + value = create_conv(dbgi, value, mode); + set_value_for_expression(expression->left, value); - ir_node *val2 = expression_to_firm(expression->right); - val2 = create_conv(dbgi, val2, mode_b); - if(get_cur_block() != NULL) { - ir_node *jmp = new_d_Jmp(dbgi); - add_immBlock_pred(fallthrough_block, jmp); + 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->datatype); + type_t *type_right = skip_typeref(expr_right->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); } - /* fallthrough */ - ir_node *constb; - if(is_or) { - constb = new_d_Const(dbgi, mode_b, get_tarval_b_true()); - add_immBlock_pred(fallthrough_block, true_proj); + if (type_left->type == TYPE_POINTER || type_left->type == TYPE_ARRAY) { + return pointer_arithmetic(left, right, type, dbgi, new_d_Add); } else { - constb = new_d_Const(dbgi, mode_b, get_tarval_b_false()); - add_immBlock_pred(fallthrough_block, false_proj); + assert(type_right->type == TYPE_POINTER || type_right->type == TYPE_ARRAY); + return pointer_arithmetic(right, left, type, dbgi, new_d_Add); } - mature_immBlock(fallthrough_block); +} - set_cur_block(fallthrough_block); +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->datatype); + type_t *const type_right = skip_typeref(expr_right->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 (type_left->type == TYPE_POINTER && type_right->type == TYPE_POINTER) { + const pointer_type_t *const ptr_type = (const pointer_type_t*)type_left; + const unsigned elem_size = get_type_size(ptr_type->points_to); + ir_mode *const mode = get_ir_mode(type); + ir_node *const sub = new_d_Sub(dbgi, left, right, mode); + ir_node *const cnst = new_Const_long(mode_Is, (long)elem_size); + ir_node *const no_mem = new_NoMem(); + ir_node *const div = new_d_Div(dbgi, no_mem, sub, cnst, mode, + op_pin_state_floats); + return new_d_Proj(dbgi, div, mode, pn_Div_res); + } - ir_node *in[2] = { val2, constb }; - ir_node *val = new_d_Phi(dbgi, 2, in, mode_b); + assert(type_left->type == TYPE_POINTER); + return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub); +} - return val; +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_Iu); + + ir_node *res; + + switch(expression->type) { + case BINEXPR_SHIFTLEFT_ASSIGN: + case BINEXPR_SHIFTLEFT: + res = new_d_Shl(dbgi, left, right, mode); + break; + case BINEXPR_SHIFTRIGHT_ASSIGN: + case BINEXPR_SHIFTRIGHT: { + expression_t *expr_left = expression->left; + type_t *type_left = skip_typeref(expr_left->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; } -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) +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); - type_t *type = expression->expression.datatype; + 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->datatype; ir_mode *mode = get_ir_mode(type); - /* TODO FIXME Hack for now */ - right = create_conv(dbgi, right, get_irn_mode(left)); + left = create_conv(dbgi, left, mode); + ir_node *op; + ir_node *res; + + switch (expression->type) { + case BINEXPR_DIV: + case BINEXPR_DIV_ASSIGN: + if(mode_is_float(mode)) { + op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats); + res = new_d_Proj(dbgi, op, mode, pn_Quot_res); + } else { + op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats); + res = new_d_Proj(dbgi, op, mode, pn_Div_res); + } + break; - ir_node *res = func(dbgi, left, right, mode); + case BINEXPR_MOD: + case BINEXPR_MOD_ASSIGN: + assert(!mode_is_float(mode)); + op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats); + res = new_d_Proj(dbgi, op, mode, pn_Mod_res); + break; + + 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) { binary_expression_type_t type = expression->type; @@ -959,9 +1265,9 @@ static ir_node *binary_expression_to_firm(const binary_expression_t *expression) return right; } case BINEXPR_ADD: - return create_arithmetic_binop(expression, new_d_Add); + return create_add(expression); case BINEXPR_SUB: - return create_arithmetic_binop(expression, new_d_Sub); + return create_sub(expression); case BINEXPR_MUL: return create_arithmetic_binop(expression, new_d_Mul); case BINEXPR_BITWISE_AND: @@ -971,12 +1277,34 @@ static ir_node *binary_expression_to_firm(const binary_expression_t *expression) case BINEXPR_BITWISE_XOR: return create_arithmetic_binop(expression, new_d_Eor); case BINEXPR_SHIFTLEFT: - return create_arithmetic_binop(expression, new_d_Shl); case BINEXPR_SHIFTRIGHT: - return create_arithmetic_binop(expression, new_d_Shr); + return create_shift(expression); + case BINEXPR_DIV: + case BINEXPR_MOD: + return create_divmod(expression); case BINEXPR_LOGICAL_AND: case BINEXPR_LOGICAL_OR: return create_lazy_op(expression); + case BINEXPR_COMMA: + expression_to_firm(expression->left); + return expression_to_firm(expression->right); + case BINEXPR_ADD_ASSIGN: + return create_arithmetic_assign_binop(expression, new_d_Add); + case BINEXPR_SUB_ASSIGN: + return create_arithmetic_assign_binop(expression, new_d_Sub); + case BINEXPR_MUL_ASSIGN: + return create_arithmetic_assign_binop(expression, new_d_Mul); + case BINEXPR_DIV_ASSIGN: + return create_arithmetic_assign_divmod(expression); + case BINEXPR_BITWISE_AND_ASSIGN: + return create_arithmetic_assign_binop(expression, new_d_And); + case BINEXPR_BITWISE_OR_ASSIGN: + return create_arithmetic_assign_binop(expression, new_d_Or); + case BINEXPR_BITWISE_XOR_ASSIGN: + return create_arithmetic_assign_binop(expression, new_d_Eor); + case BINEXPR_SHIFTLEFT_ASSIGN: + case BINEXPR_SHIFTRIGHT_ASSIGN: + return create_arithmetic_assign_shift(expression); default: panic("TODO binexpr type"); } @@ -985,10 +1313,22 @@ static ir_node *binary_expression_to_firm(const binary_expression_t *expression) static ir_node *array_access_addr(const array_access_expression_t *expression) { dbg_info *dbgi = get_dbg_info(&expression->expression.source_position); + ir_node *base_addr; + ir_node *offset; + + type_t *type_left = skip_typeref(expression->array_ref->datatype); + type_t *type_right = skip_typeref(expression->index->datatype); - ir_node *base_addr = expression_to_firm(expression->array_ref); - ir_node *offset = expression_to_firm(expression->index); - offset = create_conv(dbgi, offset, mode_Iu); + if(type_left->type == TYPE_POINTER || type_left->type == TYPE_ARRAY) { + base_addr = expression_to_firm(expression->array_ref); + offset = expression_to_firm(expression->index); + } else { + assert(type_right->type == TYPE_POINTER + || type_right->type == TYPE_ARRAY); + base_addr = expression_to_firm(expression->index); + offset = expression_to_firm(expression->array_ref); + } + offset = create_conv(dbgi, offset, mode_Iu); unsigned elem_size = get_type_size(expression->expression.datatype); ir_node *elem_size_const = new_Const_long(mode_Iu, elem_size); @@ -1002,12 +1342,10 @@ static ir_node *array_access_addr(const array_access_expression_t *expression) static ir_node *array_access_to_firm( const array_access_expression_t *expression) { - dbg_info *dbgi = get_dbg_info(&expression->expression.source_position); ir_node *addr = array_access_addr(expression); - type_t *type = expression->expression.datatype; - - return load_from_expression_addr(type, addr, dbgi); + type_t *type = skip_typeref(expression->expression.datatype); + return deref_address(type, addr, dbgi); } static ir_node *sizeof_to_firm(const sizeof_expression_t *expression) @@ -1025,26 +1363,234 @@ static ir_node *sizeof_to_firm(const sizeof_expression_t *expression) return size_node; } -static ir_node *expression_to_addr(const expression_t *expression) +static ir_node *conditional_to_firm(const conditional_expression_t *expression) { - switch(expression->type) { - case EXPR_ARRAY_ACCESS: - return array_access_addr((const array_access_expression_t*) expression); - default: - break; - } - panic("trying to get address of non-lvalue"); -} + dbg_info *dbgi = get_dbg_info(&expression->expression.source_position); -static ir_node *_expression_to_firm(const expression_t *expression) -{ - switch(expression->type) { - case EXPR_CONST: - return const_to_firm((const const_t*) expression); - case EXPR_STRING_LITERAL: - return string_literal_to_firm((const string_literal_t*) expression); - case EXPR_REFERENCE: - return reference_expression_to_firm( + 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 = skip_typeref(expression->expression.datatype); + return deref_address(type, 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->datatype; + + gcc_type_class tc; + switch (type->type) + { + case TYPE_ATOMIC: { + const atomic_type_t *const atomic_type = (const atomic_type_t*)type; + 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_Is; + 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_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 *dereference_addr(const unary_expression_t *const expression) +{ + assert(expression->type == UNEXPR_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((const reference_expression_t*) expression); + case EXPR_ARRAY_ACCESS: + return array_access_addr((const array_access_expression_t*) expression); + case EXPR_SELECT: + return select_addr((const select_expression_t*) expression); + case EXPR_UNARY: { + const unary_expression_t *const unary_expr = + (const unary_expression_t*)expression; + if (unary_expr->type == UNEXPR_DEREFERENCE) { + return dereference_addr(unary_expr); + } + break; + } + 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); + case EXPR_STRING_LITERAL: + return string_literal_to_firm((const string_literal_t*) expression); + case EXPR_REFERENCE: + return reference_expression_to_firm( (const reference_expression_t*) expression); case EXPR_CALL: return call_expression_to_firm((const call_expression_t*) expression); @@ -1058,29 +1604,119 @@ static ir_node *_expression_to_firm(const expression_t *expression) (const array_access_expression_t*) expression); case EXPR_SIZEOF: return sizeof_to_firm((const sizeof_expression_t*) expression); - default: + case EXPR_CONDITIONAL: + return conditional_to_firm((const conditional_expression_t*)expression); + case EXPR_SELECT: + return select_to_firm((const select_expression_t*) expression); + case EXPR_CLASSIFY_TYPE: + return classify_type_to_firm((const classify_type_expression_t*)expression); + case EXPR_FUNCTION: + case EXPR_PRETTY_FUNCTION: + return function_name_to_firm((const string_literal_t*)expression); + case EXPR_STATEMENT: + return statement_expression_to_firm( + (const statement_expression_t*) expression); + case EXPR_OFFSETOF: + case EXPR_VA_ARG: + 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); + ir_node *res = _expression_to_firm(expression); - if(expression->datatype == type_void) - return NULL; + if(res != NULL && get_irn_mode(res) == mode_b) { + ir_mode *mode = get_ir_mode(expression->datatype); + res = create_conv(NULL, res, mode); + } - ir_mode *mode = get_ir_mode(expression->datatype); - res = create_conv(NULL, res, mode); return res; } +static ir_node *expression_to_modeb(const expression_t *expression) +{ + ir_node *res = _expression_to_firm(expression); + res = create_conv(NULL, res, mode_b); + + return res; +} + +/** + * 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: { + unary_expression_t *unary_expression = (unary_expression_t*) expression; + if(unary_expression->type == UNEXPR_NOT) { + create_condition_evaluation(unary_expression->value, false_block, + true_block); + return; + } + break; + } + case EXPR_BINARY: { + binary_expression_t *binary_expression + = (binary_expression_t*) expression; + if(binary_expression->type == BINEXPR_LOGICAL_AND) { + ir_node *cur_block = get_cur_block(); + ir_node *extra_block = new_immBlock(); + set_cur_block(cur_block); + create_condition_evaluation(binary_expression->left, extra_block, + false_block); + mature_immBlock(extra_block); + set_cur_block(extra_block); + create_condition_evaluation(binary_expression->right, true_block, + false_block); + return; + } + if(binary_expression->type == BINEXPR_LOGICAL_OR) { + ir_node *cur_block = get_cur_block(); + ir_node *extra_block = new_immBlock(); + set_cur_block(cur_block); + create_condition_evaluation(binary_expression->left, true_block, + extra_block); + mature_immBlock(extra_block); + set_cur_block(extra_block); + create_condition_evaluation(binary_expression->right, true_block, + false_block); + return; + } + break; + } + default: + break; + } + + dbg_info *dbgi = get_dbg_info(&expression->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); +} -static void statement_to_firm(statement_t *statement); static void return_statement_to_firm(return_statement_t *statement) { + if(get_cur_block() == NULL) + return; + dbg_info *dbgi = get_dbg_info(&statement->statement.source_position); ir_node *ret; @@ -1099,51 +1735,55 @@ static void return_statement_to_firm(return_statement_t *statement) set_cur_block(NULL); } -static void compound_statement_to_firm(compound_statement_t *compound) +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->next) { //context2firm(&statement->context); + + if(statement->next == NULL && statement->type == STATEMENT_EXPRESSION) { + result = expression_statement_to_firm( + (expression_statement_t*) statement); + break; + } statement_to_firm(statement); } -} -static void expression_statement_to_firm(expression_statement_t *statement) -{ - expression_to_firm(statement->expression); + return result; } static void if_statement_to_firm(if_statement_t *statement) { - dbg_info *dbgi = get_dbg_info(&statement->statement.source_position); - 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 *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); + ir_node *cur_block = get_cur_block(); ir_node *fallthrough_block = new_immBlock(); /* the true (blocks) */ - ir_node *true_block = new_immBlock(); - add_immBlock_pred(true_block, true_proj); - mature_immBlock(true_block); - - statement_to_firm(statement->true_statement); - if(get_cur_block() != NULL) { - ir_node *jmp = new_Jmp(); - add_immBlock_pred(fallthrough_block, jmp); + 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) { - ir_node *false_block = new_immBlock(); - add_immBlock_pred(false_block, false_proj); - mature_immBlock(false_block); + false_block = new_immBlock(); statement_to_firm(statement->false_statement); if(get_cur_block() != NULL) { @@ -1151,7 +1791,19 @@ static void if_statement_to_firm(if_statement_t *statement) add_immBlock_pred(fallthrough_block, jmp); } } else { - add_immBlock_pred(fallthrough_block, false_proj); + 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); @@ -1160,8 +1812,6 @@ static void if_statement_to_firm(if_statement_t *statement) static void while_statement_to_firm(while_statement_t *statement) { - dbg_info *dbgi = get_dbg_info(&statement->statement.source_position); - ir_node *jmp = NULL; if(get_cur_block() != NULL) { jmp = new_Jmp(); @@ -1173,50 +1823,46 @@ static void while_statement_to_firm(while_statement_t *statement) add_immBlock_pred(header_block, jmp); } - /* create the condition */ - ir_node *condition = _expression_to_firm(statement->condition); - condition = create_conv(dbgi, condition, mode_b); - - ir_node *cond = new_d_Cond(dbgi, condition); - ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true); - ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false); - /* the false block */ ir_node *false_block = new_immBlock(); - add_immBlock_pred(false_block, false_proj); /* the loop body */ - ir_node *body_block = new_immBlock(); - add_immBlock_pred(body_block, true_proj); - mature_immBlock(body_block); + ir_node *body_block; + if (statement->body != NULL) { + ir_node *old_continue_label = continue_label; + ir_node *old_break_label = break_label; + continue_label = header_block; + break_label = false_block; - ir_node *old_continue_label = continue_label; - ir_node *old_break_label = break_label; - continue_label = header_block; - break_label = false_block; + body_block = new_immBlock(); + statement_to_firm(statement->body); - 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; - 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) { - ir_node *jmp = new_Jmp(); - add_immBlock_pred(header_block, jmp); + if(get_cur_block() != NULL) { + ir_node *jmp = new_Jmp(); + add_immBlock_pred(header_block, jmp); + } + } else { + body_block = header_block; } - 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 do_while_statement_to_firm(do_while_statement_t *statement) { - dbg_info *dbgi = get_dbg_info(&statement->statement.source_position); - ir_node *jmp = NULL; if(get_cur_block() != NULL) { jmp = new_Jmp(); @@ -1234,22 +1880,25 @@ static void do_while_statement_to_firm(do_while_statement_t *statement) add_immBlock_pred(body_block, jmp); } - ir_node *old_continue_label = continue_label; - ir_node *old_break_label = break_label; - continue_label = header_block; - break_label = false_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; - statement_to_firm(statement->body); + 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; + 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); - return; + if (get_cur_block() == NULL) { + mature_immBlock(header_block); + mature_immBlock(body_block); + mature_immBlock(false_block); + return; + } } ir_node *body_jmp = new_Jmp(); @@ -1257,17 +1906,82 @@ static void do_while_statement_to_firm(do_while_statement_t *statement) mature_immBlock(header_block); /* create the condition */ - ir_node *condition = _expression_to_firm(statement->condition); - condition = create_conv(dbgi, condition, mode_b); - - ir_node *cond = new_d_Cond(dbgi, condition); - ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true); - ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false); + set_cur_block(header_block); - add_immBlock_pred(body_block, true_proj); + create_condition_evaluation(statement->condition, body_block, false_block); mature_immBlock(body_block); + mature_immBlock(false_block); + mature_immBlock(header_block); - add_immBlock_pred(false_block, false_proj); + 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); + } + 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) { + ir_node *const jmp = new_Jmp(); + add_immBlock_pred(step_block, jmp); + } + } else { + body_block = step_block; + } + + /* create the condition */ + set_cur_block(header_block); + if (statement->condition != NULL) { + create_condition_evaluation(statement->condition, body_block, + false_block); + } else { + keep_alive(header_block); + ir_node *jmp = new_Jmp(); + add_immBlock_pred(body_block, jmp); + } + + mature_immBlock(body_block); + mature_immBlock(false_block); + mature_immBlock(step_block); + mature_immBlock(header_block); mature_immBlock(false_block); set_cur_block(false_block); @@ -1288,33 +2002,285 @@ static void create_declaration_entity(declaration_t *declaration, /* 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((initializer_value_t*) sub_initializer, + entity, &entry, len); + } else { + type_t *type = skip_typeref(compound_entry->type); + create_initializer_object(sub_initializer, 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; + + for(size_t 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((initializer_value_t*) sub_initializer, + entity, &entry, len); + } else { + assert(sub_initializer->type == INITIALIZER_LIST); + create_initializer_object(sub_initializer, element_type, entity, + &entry, len); + } + } +} + +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_object(initializer_t *initializer, type_t *type, + ir_entity *entity, compound_graph_path_entry_t *entry, int len) +{ + if(type->type == TYPE_ARRAY) { + array_type_t *array_type = (array_type_t*) type; + + if(initializer->type == INITIALIZER_STRING) { + initializer_string_t *string = (initializer_string_t*) initializer; + create_initializer_string(string, array_type, entity, entry, len); + } else { + assert(initializer->type == INITIALIZER_LIST); + initializer_list_t *list = (initializer_list_t*) initializer; + create_initializer_array(list, array_type, entity, entry, len); + } + } else { + assert(initializer->type == INITIALIZER_LIST); + initializer_list_t *list = (initializer_list_t*) initializer; + + assert(type->type == TYPE_COMPOUND_STRUCT + || type->type == TYPE_COMPOUND_UNION); + compound_type_t *compound_type = (compound_type_t*) type; + 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(is_atomic_entity(entity)) { + assert(initializer->type == INITIALIZER_VALUE); + initializer_value_t *initializer_value + = (initializer_value_t*) initializer; + + ir_node *value = expression_to_firm(initializer_value->value); + 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); + return; + } + + /* create a "template" entity which is copied to the entity on the stack */ + ident *id = unique_ident("initializer"); + ir_type *irtype = get_ir_type(declaration->type); + ir_type *global_type = get_glob_type(); + ir_entity *init_entity = new_entity(global_type, id, irtype); + set_entity_ld_ident(init_entity, id); + + set_entity_variability(init_entity, variability_initialized); + set_entity_visibility(init_entity, visibility_local); + + ir_graph *old_current_ir_graph = current_ir_graph; + current_ir_graph = get_const_code_irg(); + + type_t *type = skip_typeref(declaration->type); + create_initializer_object(initializer, type, init_entity, NULL, 0); + + assert(current_ir_graph == get_const_code_irg()); + current_ir_graph = old_current_ir_graph; + + ir_node *src_addr = create_symconst(dbgi, init_entity); + ir_node *copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype); + + ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular); + set_store(copyb_mem); +} + static void create_initializer(declaration_t *declaration) { initializer_t *initializer = declaration->init.initializer; if(initializer == NULL) return; + declaration_type_t declaration_type = (declaration_type_t)declaration->declaration_type; + if(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY) { + create_initializer_local_variable_entity(declaration); + return; + } + if(initializer->type == INITIALIZER_VALUE) { - assert(initializer->designator == NULL); - assert(initializer->next == NULL); - ir_node *init_node = expression_to_firm(initializer->v.value); + initializer_value_t *initializer_value + = (initializer_value_t*) initializer; + ir_node *value = expression_to_firm(initializer_value->value); - if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) { - set_value(declaration->v.value_number, init_node); + if(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) { + set_value(declaration->v.value_number, value); } else { - panic("initializer not completely implemented yet"); + 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(initializer->type == INITIALIZER_LIST); - panic("list initializer not supported yet"); + declaration_type_t declaration_type = (declaration_type_t)declaration->declaration_type; + 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); - assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN); + if(type->type == TYPE_ARRAY + || type->type == TYPE_COMPOUND_STRUCT + || type->type == TYPE_COMPOUND_UNION) { + needs_entity = true; + } if(needs_entity) { ir_type *frame_type = get_irg_frame_type(current_ir_graph); @@ -1330,6 +2296,31 @@ static void create_local_variable(declaration_t *declaration) create_initializer(declaration); } +static void create_local_static_variable(declaration_t *declaration) +{ + assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN); + + type_t *type = skip_typeref(declaration->type); + ir_type *global_type = get_glob_type(); + ident *id = unique_ident(declaration->symbol->string); + ir_type *irtype = get_ir_type(type); + ir_entity *entity = new_entity(global_type, id, irtype); + set_entity_ld_ident(entity, id); + + declaration->declaration_type = DECLARATION_TYPE_GLOBAL_VARIABLE; + declaration->v.entity = entity; + set_entity_variability(entity, variability_uninitialized); + set_entity_visibility(entity, visibility_local); + + ir_graph *old_current_ir_graph = current_ir_graph; + current_ir_graph = get_const_code_irg(); + + create_initializer(declaration); + + assert(current_ir_graph == get_const_code_irg()); + current_ir_graph = old_current_ir_graph; +} + static void declaration_statement_to_firm(declaration_statement_t *statement) { declaration_t *declaration = statement->declarations_begin; @@ -1341,7 +2332,8 @@ static void declaration_statement_to_firm(declaration_statement_t *statement) case STORAGE_CLASS_TYPEDEF: continue; case STORAGE_CLASS_STATIC: - panic("static local vars not implemented yet"); + create_local_static_variable(declaration); + continue; case STORAGE_CLASS_ENUM_ENTRY: panic("enum entry declaration in local block found"); case STORAGE_CLASS_EXTERN: @@ -1363,6 +2355,9 @@ static void declaration_statement_to_firm(declaration_statement_t *statement) static void create_jump_statement(const statement_t *statement, ir_node *target_block) { + if(get_cur_block() == NULL) + return; + dbg_info *dbgi = get_dbg_info(&statement->source_position); ir_node *jump = new_d_Jmp(dbgi); add_immBlock_pred(target_block, jump); @@ -1380,10 +2375,11 @@ static void switch_statement_to_firm(const switch_statement_t *statement) set_cur_block(NULL); - ir_node *old_switch_cond = current_switch_cond; - ir_node *old_break_label = break_label; - current_switch_cond = cond; - break_label = break_block; + 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; statement_to_firm(statement->body); @@ -1392,47 +2388,122 @@ static void switch_statement_to_firm(const switch_statement_t *statement) add_immBlock_pred(break_block, jmp); } + if (!saw_default_label) { + set_cur_block(get_nodes_block(cond)); + ir_node *const proj = new_d_defaultProj(dbgi, cond, + MAGIC_DEFAULT_PN_NUMBER); + add_immBlock_pred(break_block, proj); + } + 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 long fold_constant(const expression_t *expression) +{ + ir_graph *old_current_ir_graph = current_ir_graph; + current_ir_graph = get_const_code_irg(); + + ir_node *cnst = expression_to_firm(expression); + if(!is_Const(cnst)) { + panic("couldn't fold constantl"); + } + tarval *tv = get_Const_tarval(cnst); + if(!tarval_is_long(tv)) { + panic("folded constant not an integer"); + } + + long res = get_tarval_long(tv); + + current_ir_graph = old_current_ir_graph; + return res; +} + static void case_label_to_firm(const case_label_statement_t *statement) { dbg_info *dbgi = get_dbg_info(&statement->statement.source_position); + 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) { - ir_node *cnst = expression_to_firm(statement->expression); - if(!is_Const(cnst)) { - panic("couldn't fold constant for case label"); - } - tarval *tv = get_Const_tarval(cnst); - if(!mode_is_int(get_tarval_mode(tv))) { - panic("case label not an integer"); - } - - long pn = get_tarval_long(tv); + 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); } ir_node *block = new_immBlock(); + if (fallthrough != NULL) { + add_immBlock_pred(block, fallthrough); + } add_immBlock_pred(block, proj); mature_immBlock(block); + + statement_to_firm(statement->label_statement); +} + +static ir_node *get_label_block(declaration_t *label) +{ + assert(label->namespc == NAMESPACE_LABEL); + + if(label->declaration_type == DECLARATION_TYPE_LABEL_BLOCK) { + return label->v.block; + } + assert(label->declaration_type == DECLARATION_TYPE_UNKNOWN); + + ir_node *old_cur_block = get_cur_block(); + ir_node *block = new_immBlock(); + set_cur_block(old_cur_block); + + label->declaration_type = DECLARATION_TYPE_LABEL_BLOCK; + label->v.block = block; + + ARR_APP1(ir_node *, imature_blocks, block); + + return block; +} + +static void label_to_firm(const label_statement_t *statement) +{ + ir_node *block = get_label_block(statement->label); + + if(get_cur_block() != NULL) { + ir_node *jmp = new_Jmp(); + add_immBlock_pred(block, jmp); + } + + set_cur_block(block); + keep_alive(block); + + statement_to_firm(statement->label_statement); +} + +static void goto_to_firm(const goto_statement_t *statement) +{ + if(get_cur_block() == NULL) + return; + + ir_node *block = get_label_block(statement->label); + ir_node *jmp = new_Jmp(); + add_immBlock_pred(block, jmp); + + set_cur_block(NULL); } static void statement_to_firm(statement_t *statement) @@ -1471,38 +2542,166 @@ static void statement_to_firm(statement_t *statement) case STATEMENT_CASE_LABEL: case_label_to_firm((case_label_statement_t*) statement); return; + case STATEMENT_FOR: + for_statement_to_firm((for_statement_t*) statement); + return; + case STATEMENT_LABEL: + label_to_firm((label_statement_t*) statement); + return; + case STATEMENT_GOTO: + goto_to_firm((goto_statement_t*) statement); + return; default: 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_stmts(const statement_t *stmt) +{ + int count = 0; + for (; stmt != NULL; stmt = stmt->next) { + switch (stmt->type) { + case STATEMENT_DECLARATION: { + const declaration_statement_t *const decl_stmt = + (const declaration_statement_t*)stmt; + 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 = (const if_statement_t*)stmt; + count += count_decls_in_stmts(if_stmt->true_statement); + count += count_decls_in_stmts(if_stmt->false_statement); + break; + } + + case STATEMENT_SWITCH: { + const switch_statement_t *const switch_stmt = + (const switch_statement_t*)stmt; + count += count_decls_in_stmts(switch_stmt->body); + break; + } + + case STATEMENT_LABEL: { + const label_statement_t *const label_stmt = + (const label_statement_t*)stmt; + count += count_decls_in_stmts(label_stmt->label_statement); + break; + } + + case STATEMENT_WHILE: { + const while_statement_t *const while_stmt = + (const while_statement_t*)stmt; + count += count_decls_in_stmts(while_stmt->body); + break; + } + + case STATEMENT_DO_WHILE: { + const do_while_statement_t *const do_while_stmt = + (const do_while_statement_t*)stmt; + count += count_decls_in_stmts(do_while_stmt->body); + break; + } + + case STATEMENT_FOR: { + const for_statement_t *const for_stmt = + (const for_statement_t*)stmt; + /* TODO initialisation */ + count += count_decls_in_stmts(for_stmt->body); + break; + } + + case STATEMENT_BREAK: + case STATEMENT_CASE_LABEL: + case STATEMENT_CONTINUE: + case STATEMENT_EXPRESSION: + case STATEMENT_GOTO: + case STATEMENT_INVALID: + case STATEMENT_RETURN: + 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); + + /* TODO FIXME: Matze: I'm lazy don't want to scan all expressions + * for expression statements... */ + count += 10; + + 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; + if(type->type == TYPE_COMPOUND_STRUCT + || type->type == TYPE_COMPOUND_UNION) { + 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; @@ -1519,6 +2718,12 @@ static void create_function(declaration_t *declaration) if(declaration->init.statement == NULL) return; + 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(entity, n_local_vars); ir_node *first_block = get_cur_block(); @@ -1532,10 +2737,32 @@ 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); + assert(declaration->type->type == TYPE_FUNCTION); + const function_type_t* const func_type + = (const function_type_t*) declaration->type; + ir_node *ret; + if (func_type->result_type == type_void) { + ret = new_Return(get_store(), 0, NULL); + } else { + ir_mode *const mode = get_ir_mode(func_type->result_type); + 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); @@ -1556,7 +2783,9 @@ 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); @@ -1569,27 +2798,66 @@ static void create_function(declaration_t *declaration) irg_vrfy(irg); } +static void create_global_variable(declaration_t *declaration) +{ + ir_type *global_type = get_glob_type(); + create_declaration_entity(declaration, DECLARATION_TYPE_GLOBAL_VARIABLE, + global_type); + + ir_entity *entity = declaration->v.entity; + if(declaration->storage_class == STORAGE_CLASS_STATIC) { + set_entity_visibility(entity, visibility_local); + } else if(declaration->storage_class == STORAGE_CLASS_EXTERN) { + set_entity_visibility(entity, visibility_external_allocated); + } else { + set_entity_visibility(entity, visibility_external_visible); + } + current_ir_graph = get_const_code_irg(); + create_initializer(declaration); +} + static void context_to_firm(context_t *context) { + /* first pass: create declarations */ declaration_t *declaration = context->declarations; for( ; declaration != NULL; declaration = declaration->next) { - if(declaration->namespace != NAMESPACE_NORMAL) + 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) { - create_function(declaration); + 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 translation_unit_to_firm(translation_unit_t *unit) { - /* remove me later TODO FIXME */ - (void) get_type_size; - /* just to be sure */ continue_label = NULL; break_label = NULL;