X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;ds=sidebyside;f=ast2firm.c;h=317811b075b538247aeb286a746f3a37ae1636ba;hb=00c6e3c2ba43d99e4b448b81521311774421f907;hp=0f1d7b9e6bb84636455d975b6195a43237832c42;hpb=353985d8d06fcac2f36682820b8ae635c5e6162e;p=cparser diff --git a/ast2firm.c b/ast2firm.c index 0f1d7b9..317811b 100644 --- a/ast2firm.c +++ b/ast2firm.c @@ -12,10 +12,13 @@ #include "ast2firm.h" #include "adt/error.h" +#include "adt/array.h" #include "token_t.h" #include "type_t.h" #include "ast_t.h" +#define MAGIC_DEFAULT_PN_NUMBER (long) -314159265 + static ir_type *ir_type_const_char; static ir_type *ir_type_void; static ir_type *ir_type_int; @@ -25,7 +28,11 @@ 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 ir_node **imature_blocks; typedef enum declaration_type_t { DECLARATION_TYPE_UNKNOWN, @@ -33,16 +40,10 @@ 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) @@ -109,33 +110,6 @@ static ident *unique_ident(const char *tag) 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) { @@ -179,8 +153,8 @@ 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; } @@ -282,10 +256,10 @@ 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); @@ -293,8 +267,7 @@ 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; @@ -304,26 +277,26 @@ 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; @@ -335,39 +308,41 @@ 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); - /* 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); } - 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; @@ -384,8 +359,11 @@ 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->namespace != 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); @@ -416,7 +394,7 @@ 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; @@ -434,8 +412,11 @@ 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->namespace != 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); @@ -464,7 +445,7 @@ 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); @@ -478,22 +459,22 @@ 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; @@ -507,25 +488,20 @@ 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; } @@ -543,11 +519,10 @@ 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); @@ -564,6 +539,7 @@ static ir_entity* get_function_entity(declaration_t *declaration) static ir_node *expression_to_firm(const expression_t *expression); +static ir_node *expression_to_modeb(const expression_t *expression); static dbg_info *get_dbg_info(const source_position_t *pos) { @@ -628,24 +604,93 @@ static ir_node *string_literal_to_firm(const string_literal_t* literal) return create_symconst(dbgi, entity); } +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 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); + + if(type->type == TYPE_ARRAY) { + return symconst; + } else { + return load_from_expression_addr(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); + + if(type->type == TYPE_ARRAY || type->type == TYPE_COMPOUND_STRUCT + || type->type == TYPE_COMPOUND_UNION) { + return sel; + } else { + return load_from_expression_addr(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"); } @@ -654,6 +699,8 @@ static ir_node *reference_expression_to_firm(const reference_expression_t *ref) static ir_node *call_expression_to_firm(const call_expression_t *call) { + assert(get_cur_block() != NULL); + expression_t *function = call->function; ir_node *callee = expression_to_firm(function); @@ -668,7 +715,7 @@ 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); @@ -723,25 +770,7 @@ 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 ir_node *expression_addr(const expression_t *expression) -{ - (void) expression; - panic("expression_addr not implemented yet"); - return NULL; -} +static ir_node *expression_to_addr(const expression_t *expression); static void set_value_for_expression(const expression_t *expression, ir_node *value) @@ -756,7 +785,14 @@ static void set_value_for_expression(const expression_t *expression, return; } } - panic("set_value_for_expression not implemented yet"); + + dbg_info *dbgi = get_dbg_info(&expression->source_position); + ir_node *addr = expression_to_addr(expression); + assert(get_irn_mode(value) == get_ir_mode(expression->datatype)); + ir_node *memory = get_store(); + 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); } static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode) @@ -783,7 +819,7 @@ static ir_node *unary_expression_to_firm(const unary_expression_t *expression) ir_mode *mode = get_ir_mode(type); if(expression->type == UNEXPR_TAKE_ADDRESS) - return expression_addr(expression->value); + return expression_to_addr(expression->value); const expression_t *value = expression->value; ir_node *value_node = expression_to_firm(value); @@ -855,10 +891,245 @@ static long get_pnc(binary_expression_type_t type) 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); + bool is_or = (expression->type == BINEXPR_LOGICAL_OR); + assert(is_or || expression->type == BINEXPR_LOGICAL_AND); + + ir_node *val1 = expression_to_modeb(expression->left); + 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 *fallthrough_block = new_immBlock(); + + /* the true case */ + ir_node *calc_val2_block = new_immBlock(); + if(is_or) { + add_immBlock_pred(calc_val2_block, false_proj); + } else { + add_immBlock_pred(calc_val2_block, true_proj); + } + + mature_immBlock(calc_val2_block); + + ir_node *val2 = expression_to_modeb(expression->right); + if(get_cur_block() != NULL) { + ir_node *jmp = new_d_Jmp(dbgi); + add_immBlock_pred(fallthrough_block, jmp); + } + + /* 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); + } else { + constb = new_d_Const(dbgi, mode_b, get_tarval_b_false()); + add_immBlock_pred(fallthrough_block, false_proj); + } + mature_immBlock(fallthrough_block); + + set_cur_block(fallthrough_block); + + ir_node *in[2] = { val2, constb }; + ir_node *val = new_d_Phi(dbgi, 2, in, mode_b); + + 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 asithmetic assign nodes only + * the right operand has the mode of the arithmetic alread */ + 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 *create_arithmetic_assign_binop( + const binary_expression_t *expression, create_arithmetic_func func) +{ + dbg_info *dbgi = get_dbg_info(&expression->expression.source_position); + ir_node *value = create_arithmetic_binop(expression, func); + type_t *type = expression->expression.datatype; + ir_mode *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_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; + ir_mode *mode = get_ir_mode(type); + + 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)) { + return new_d_Add(dbgi, left, right, mode); + } + + ir_node *pointer; + ir_node *integer; + pointer_type_t *pointer_type; + if(type_left->type == TYPE_POINTER) { + pointer = left; + integer = right; + pointer_type = (pointer_type_t*) type_left; + } else { + assert(type_right->type == TYPE_POINTER); + pointer = right; + integer = left; + pointer_type = (pointer_type_t*) type_right; + } + + type_t *points_to = pointer_type->points_to; + 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 *cnst = new_Const_long(mode_Is, (int) elem_size); + ir_node *mul = new_d_Mul(dbgi, integer, cnst, mode_Is); + integer = mul; + } + + ir_node *res = new_d_Add(dbgi, pointer, integer, mode); + + return res; +} + +static ir_node *create_sub(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); + + 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)) + || (type_left->type == TYPE_POINTER + && type_right->type == TYPE_POINTER)) { + return new_d_Sub(dbgi, left, right, mode); + } + + assert(type_right->type == TYPE_POINTER); + ir_node *pointer = left; + ir_node *integer = right; + pointer_type_t *pointer_type = (pointer_type_t*) type_right; + + type_t *points_to = pointer_type->points_to; + unsigned elem_size = get_type_size(points_to); + + assert(elem_size >= 1); + if(elem_size > 1) { + ir_node *cnst = new_Const_long(mode_Iu, elem_size); + ir_node *mul = new_d_Mul(dbgi, integer, cnst, mode_Iu); + integer = mul; + } + + ir_node *res = new_d_Sub(dbgi, pointer, integer, mode); + + return res; +} + +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: + res = new_d_Shl(dbgi, left, right, mode); + break; + 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; +} + + +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()); + type_t *type = expression->expression.datatype; + ir_mode *mode = get_ir_mode(type); + ir_node *op; + ir_node *res; + + if(expression->type == BINEXPR_DIV) { + 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); + } + } else { + assert(expression->type == BINEXPR_MOD); + 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); + } + + return res; +} + + + +static ir_node *binary_expression_to_firm(const binary_expression_t *expression) +{ binary_expression_type_t type = expression->type; switch(type) { case BINEXPR_EQUAL: @@ -867,6 +1138,7 @@ static ir_node *binary_expression_to_firm(const binary_expression_t *expression) case BINEXPR_LESSEQUAL: case BINEXPR_GREATER: case BINEXPR_GREATEREQUAL: { + 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); @@ -879,12 +1151,188 @@ static ir_node *binary_expression_to_firm(const binary_expression_t *expression) set_value_for_expression(expression->left, right); return right; } + case BINEXPR_ADD: + return create_add(expression); + case BINEXPR_SUB: + return create_sub(expression); + case BINEXPR_MUL: + return create_arithmetic_binop(expression, new_d_Mul); + case BINEXPR_BITWISE_AND: + return create_arithmetic_binop(expression, new_d_And); + case BINEXPR_BITWISE_OR: + return create_arithmetic_binop(expression, new_d_Or); + case BINEXPR_BITWISE_XOR: + return create_arithmetic_binop(expression, new_d_Eor); + case BINEXPR_SHIFTLEFT: + case BINEXPR_SHIFTRIGHT: + 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_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: + return create_arithmetic_assign_binop(expression, new_d_Shl); + case BINEXPR_SHIFTRIGHT_ASSIGN: + return create_arithmetic_assign_binop(expression, new_d_Shr); 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_Iu); + + unsigned elem_size = get_type_size(expression->expression.datatype); + ir_node *elem_size_const = new_Const_long(mode_Iu, elem_size); + ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const, + mode_Iu); + ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P); + + 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 = expression->expression.datatype; + + return load_from_expression_addr(type, 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->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 ir_node *conditional_to_firm(const conditional_expression_t *expression) +{ + dbg_info *dbgi = get_dbg_info(&expression->expression.source_position); + + ir_node *condition = expression_to_modeb(expression->condition); + 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); + + /* create the true block */ + ir_node *true_block = new_immBlock(); + add_immBlock_pred(true_block, true_proj); + mature_immBlock(true_block); + + 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(); + add_immBlock_pred(false_block, false_proj); + mature_immBlock(false_block); + + ir_node *false_val = expression_to_firm(expression->false_expression); + ir_node *false_jmp = new_Jmp(); + + /* 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); + + 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 = expression->expression.datatype; + + return load_from_expression_addr(type, addr, dbgi); +} + +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: @@ -901,18 +1349,57 @@ static ir_node *expression_to_firm(const expression_t *expression) case EXPR_BINARY: return binary_expression_to_firm( (const binary_expression_t*) expression); - default: + case EXPR_ARRAY_ACCESS: + return array_access_to_firm( + (const array_access_expression_t*) expression); + case EXPR_SIZEOF: + return sizeof_to_firm((const sizeof_expression_t*) expression); + 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_FUNCTION: + case EXPR_OFFSETOF: + case EXPR_PRETTY_FUNCTION: + case EXPR_VA_ARG: + case EXPR_STATEMENT: + 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(get_irn_mode(res) == mode_b) { + 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; +} 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; @@ -942,18 +1429,18 @@ static void compound_statement_to_firm(compound_statement_t *compound) static void expression_statement_to_firm(expression_statement_t *statement) { + if(get_cur_block() == NULL) + return; + expression_to_firm(statement->expression); } 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); + ir_node *condition = expression_to_modeb(statement->condition); /* 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); @@ -992,51 +1479,190 @@ 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); + dbg_info *dbgi = get_dbg_info(&statement->statement.source_position); + + ir_node *jmp = NULL; + if(get_cur_block() != NULL) { + jmp = new_Jmp(); + } /* create the header block */ - ir_node *jmp = new_Jmp(); ir_node *header_block = new_immBlock(); - add_immBlock_pred(header, jmp); + if(jmp != NULL) { + add_immBlock_pred(header_block, jmp); + } /* 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 *condition = expression_to_modeb(statement->condition); 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(true_block); + mature_immBlock(body_block); + + 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; - 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(header_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(header_block); + mature_immBlock(false_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(); + } + + /* 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); + } + + 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; + } - statement_to_firm(statement->false_statement); - if(get_cur_block() != NULL) { - ir_node *jmp = new_Jmp(); - add_immBlock_pred(fallthrough_block, jmp); + 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); + ir_node *condition = expression_to_modeb(statement->condition); + 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(body_block, true_proj); + mature_immBlock(body_block); + + add_immBlock_pred(false_block, false_proj); + mature_immBlock(false_block); + + set_cur_block(false_block); +} + +static void for_statement_to_firm(for_statement_t *statement) +{ + dbg_info *const dbgi = get_dbg_info(&statement->statement.source_position); + + 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); + + /* create the condition */ + ir_node *true_proj; + ir_node *false_proj; + if (statement->condition != NULL) { + ir_node *const condition = expression_to_modeb(statement->condition); + ir_node *const cond = new_d_Cond(dbgi, condition); + true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true); + false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false); } else { - add_immBlock_pred(fallthrough_block, false_proj); + keep_alive(header_block); + true_proj = new_Jmp(); + false_proj = NULL; } - mature_immBlock(fallthrough_block); - set_cur_block(fallthrough_block); + /* the false block */ + ir_node *const false_block = new_immBlock(); + if (false_proj != NULL) { + add_immBlock_pred(false_block, false_proj); + } + + /* the loop body */ + ir_node *const body_block = new_immBlock(); + add_immBlock_pred(body_block, true_proj); + mature_immBlock(body_block); + + ir_node *const old_continue_label = continue_label; + ir_node *const old_break_label = break_label; + continue_label = step_block; + break_label = false_block; + + statement_to_firm(statement->body); + + assert(continue_label == step_block); + assert(break_label == false_block); + continue_label = old_continue_label; + break_label = old_break_label; + + if (get_cur_block() != NULL) { + ir_node *const jmp = new_Jmp(); + add_immBlock_pred(step_block, jmp); + } + + mature_immBlock(step_block); + mature_immBlock(header_block); + mature_immBlock(false_block); + + set_cur_block(false_block); } static void create_declaration_entity(declaration_t *declaration, @@ -1068,7 +1694,10 @@ static void create_initializer(declaration_t *declaration) if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) { set_value(declaration->v.value_number, init_node); } else { - panic("initializer not completely implemented yet"); + ir_entity *entity = declaration->v.entity; + + set_entity_variability(entity, variability_initialized); + set_atomic_ent_value(entity, init_node); } } else { assert(initializer->type == INITIALIZER_LIST); @@ -1078,9 +1707,16 @@ static void create_initializer(declaration_t *declaration) 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); @@ -1126,6 +1762,143 @@ 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); + + set_cur_block(NULL); +} + +static void switch_statement_to_firm(const switch_statement_t *statement) +{ + dbg_info *dbgi = get_dbg_info(&statement->statement.source_position); + + ir_node *expression = expression_to_firm(statement->expression); + ir_node *cond = new_d_Cond(dbgi, expression); + ir_node *break_block = new_immBlock(); + + set_cur_block(NULL); + + ir_node *old_switch_cond = current_switch_cond; + ir_node *old_break_label = break_label; + current_switch_cond = cond; + break_label = break_block; + + statement_to_firm(statement->body); + + if(get_cur_block() != NULL) { + ir_node *jmp = new_Jmp(); + add_immBlock_pred(break_block, jmp); + } + + assert(current_switch_cond == cond); + assert(break_label == break_block); + current_switch_cond = old_switch_cond; + break_label = old_break_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); + + /* 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 { + proj = new_d_defaultProj(dbgi, current_switch_cond, + MAGIC_DEFAULT_PN_NUMBER); + } + + ir_node *block = new_immBlock(); + add_immBlock_pred(block, proj); + mature_immBlock(block); +} + +static ir_node *get_label_block(declaration_t *label) +{ + assert(label->namespace == 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(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) { switch(statement->type) { @@ -1141,9 +1914,36 @@ static void statement_to_firm(statement_t *statement) case STATEMENT_IF: if_statement_to_firm((if_statement_t*) statement); return; + case STATEMENT_WHILE: + while_statement_to_firm((while_statement_t*) statement); + return; + case STATEMENT_DO_WHILE: + do_while_statement_to_firm((do_while_statement_t*) statement); + return; case STATEMENT_DECLARATION: declaration_statement_to_firm((declaration_statement_t*) statement); return; + 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((switch_statement_t*) statement); + return; + 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; } @@ -1167,9 +1967,16 @@ static void initialize_function_parameters(declaration_t *declaration) declaration_t *parameter = declaration->context.declarations; for( ; parameter != NULL; parameter = parameter->next) { assert(parameter->declaration_type == DECLARATION_TYPE_UNKNOWN); + type_t *type = parameter->type; + + bool needs_entity = parameter->address_taken; + if(type->type == TYPE_COMPOUND_STRUCT + || type->type == TYPE_COMPOUND_UNION) { + needs_entity = true; + } - if(parameter->address_taken) { - panic("address take from parameter not implemented yet"); + if(needs_entity) { + panic("entities for function parameters not implemented yet"); } ir_mode *mode = get_ir_mode(parameter->type); @@ -1192,9 +1999,12 @@ static void create_function(declaration_t *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(); + 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(); next_value_number_function = 0; initialize_function_parameters(declaration); @@ -1205,10 +2015,32 @@ 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); @@ -1242,15 +2074,41 @@ 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) { declaration_t *declaration = context->declarations; for( ; declaration != NULL; declaration = declaration->next) { + if(declaration->namespace != 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); } else { - /* TODO... */ + create_global_variable(declaration); } } } @@ -1260,5 +2118,10 @@ 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; + current_switch_cond = NULL; + context_to_firm(& unit->context); }