X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ast2firm.c;h=999e75a9b7877b6dffb46938733dffc0950dd27f;hb=b3e2b201ea549e7e44110b0e0d366a4e34ed1914;hp=703932711d1df6429c0d6d4c5848d97115f748c1;hpb=087130404a59dcdd95aa0d7ac7feec2793e9ce87;p=cparser diff --git a/ast2firm.c b/ast2firm.c index 7039327..999e75a 100644 --- a/ast2firm.c +++ b/ast2firm.c @@ -4,15 +4,20 @@ #include #include +#include #include #include +#include "ast2firm.h" + #include "adt/error.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; @@ -22,13 +27,20 @@ static type_t *type_const_char; static type_t *type_void; static type_t *type_int; -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 int next_value_number_function; +static ir_node *continue_label; +static ir_node *break_label; +static ir_node *current_switch_cond; + +typedef enum declaration_type_t { + DECLARATION_TYPE_UNKNOWN, + DECLARATION_TYPE_FUNCTION, + DECLARATION_TYPE_GLOBAL_VARIABLE, + DECLARATION_TYPE_LOCAL_VARIABLE, + DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY, + DECLARATION_TYPE_COMPOUND_MEMBER +} declaration_type_t; -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) @@ -76,6 +88,8 @@ void init_ast2firm(void) type in firm */ ir_type_void_ptr = new_type_pointer(new_id_from_str("void_ptr"), ir_type_void, mode_P_data); + + type_void->firm_type = ir_type_void; } void exit_ast2firm(void) @@ -93,48 +107,6 @@ static ident *unique_ident(const char *tag) return new_id_from_str(buf); } -#if 0 -static symbol_t *unique_symbol(const char *tag) -{ - obstack_printf(&symbol_obstack, "%s.%d", tag, unique_id); - unique_id++; - - const char *string = obstack_finish(&symbol_obstack); - symbol_t *symbol = symbol_table_insert(string); - - assert(symbol->string == string); - - return symbol; -} -#endif - -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) { @@ -178,8 +150,8 @@ 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; } @@ -281,9 +253,8 @@ static unsigned count_parameters(const function_type_t *function_type) -static ir_type *get_atomic_type(type2firm_env_t *env, const atomic_type_t *type) +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); @@ -291,8 +262,7 @@ static ir_type *get_atomic_type(type2firm_env_t *env, const atomic_type_t *type) return irtype; } -static ir_type *get_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; @@ -302,26 +272,26 @@ static ir_type *get_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 *get_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; @@ -329,21 +299,20 @@ static ir_type *get_pointer_type(type2firm_env_t *env, pointer_type_t *type) * again (might be a struct). We therefore first create a void* pointer * and then set the real points_to type */ - ir_type *ir_type_void = get_ir_type(type_void); - ir_type *ir_type = new_type_pointer(unique_ident("pointer"), - ir_type_void, mode_P_data); + ir_type *ir_type = new_type_pointer(unique_ident("pointer"), + 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 *get_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; @@ -366,7 +335,7 @@ static ir_type *get_array_type(type2firm_env_t *env, array_type_t *type) #define INVALID_TYPE ((ir_type_ptr)-1) -static ir_type *get_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; @@ -383,8 +352,11 @@ static ir_type *get_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); @@ -394,7 +366,8 @@ static ir_type *get_struct_type(type2firm_env_t *env, compound_type_t *type) ir_entity *entity = new_entity(ir_type, ident, entry_ir_type); set_entity_offset(entity, offset); add_struct_member(ir_type, entity); - entry->entity = entity; + entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER; + entry->v.entity = entity; offset += entry_size; if(entry_alignment > align_all) { @@ -414,7 +387,7 @@ static ir_type *get_struct_type(type2firm_env_t *env, compound_type_t *type) return ir_type; } -static ir_type *get_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; @@ -432,8 +405,11 @@ static ir_type *get_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); @@ -441,7 +417,8 @@ static ir_type *get_union_type(type2firm_env_t *env, compound_type_t *type) ir_entity *entity = new_entity(ir_type, ident, entry_ir_type); add_union_member(ir_type, entity); set_entity_offset(entity, 0); - entry->entity = entity; + entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER; + entry->v.entity = entity; if(entry_size > size) { size = entry_size; @@ -461,7 +438,7 @@ static ir_type *get_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); @@ -475,22 +452,22 @@ 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 = get_atomic_type(env, (atomic_type_t*) type); + firm_type = create_atomic_type((atomic_type_t*) type); break; case TYPE_FUNCTION: - firm_type = get_method_type(env, (function_type_t*) type); + firm_type = create_method_type((function_type_t*) type); break; case TYPE_POINTER: - firm_type = get_pointer_type(env, (pointer_type_t*) type); + firm_type = create_pointer_type((pointer_type_t*) type); break; case TYPE_ARRAY: - firm_type = get_array_type(env, (array_type_t*) type); + firm_type = create_array_type((array_type_t*) type); break; case TYPE_COMPOUND_STRUCT: - firm_type = get_struct_type(env, (compound_type_t*) type); + firm_type = create_struct_type((compound_type_t*) type); break; case TYPE_COMPOUND_UNION: - firm_type = get_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; @@ -504,19 +481,8 @@ 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) @@ -527,10 +493,11 @@ static inline ir_mode *get_ir_mode(type_t *type) return mode; } -static ir_entity* get_entity_function(declaration_t *declaration) +static ir_entity* get_function_entity(declaration_t *declaration) { - if(declaration->entity != NULL) - return declaration->entity; + if(declaration->declaration_type == DECLARATION_TYPE_FUNCTION) + return declaration->v.entity; + assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN); symbol_t *symbol = declaration->symbol; ident *id = new_id_from_str(symbol->string); @@ -551,12 +518,17 @@ static ir_entity* get_entity_function(declaration_t *declaration) set_entity_visibility(entity, visibility_external_allocated); } - declaration->entity = entity; + declaration->declaration_type = DECLARATION_TYPE_FUNCTION; + declaration->v.entity = entity; + return entity; } +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) { return (dbg_info*) pos; @@ -577,14 +549,24 @@ static ir_node *const_to_firm(const const_t *cnst) return new_d_Const(dbgi, mode, tv); } +static ir_node *create_symconst(dbg_info *dbgi, ir_entity *entity) +{ + assert(entity != NULL); + union symconst_symbol sym; + sym.entity_p = entity; + return new_d_SymConst(dbgi, sym, symconst_addr_ent); +} + static ir_node *string_literal_to_firm(const string_literal_t* literal) { ir_type *global_type = get_glob_type(); ir_type *type = new_type_array(unique_ident("strtype"), 1, ir_type_const_char); - ir_entity *ent = new_entity(global_type, unique_ident("Lstr"), type); - set_entity_variability(ent, variability_constant); + ident *id = unique_ident("Lstr"); + ir_entity *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); @@ -602,50 +584,111 @@ static ir_node *string_literal_to_firm(const string_literal_t* literal) tvs[i] = new_tarval_from_long(string[i], mode); } - set_array_entity_values(ent, tvs, slen); + set_array_entity_values(entity, tvs, slen); free(tvs); dbg_info *dbgi = get_dbg_info(&literal->expression.source_position); - union symconst_symbol sym; - sym.entity_p = ent; - return new_d_SymConst(dbgi, sym, symconst_addr_ent); + 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); + + switch((declaration_type_t) declaration->declaration_type) { + case DECLARATION_TYPE_UNKNOWN: + break; + case DECLARATION_TYPE_LOCAL_VARIABLE: + return get_value(declaration->v.value_number, mode); + 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 load_from_expression_addr(type, symconst, dbgi); + } + case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: + case DECLARATION_TYPE_COMPOUND_MEMBER: + 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_GLOBAL_VARIABLE: { + ir_entity *entity = declaration->v.entity; + ir_node *symconst = create_symconst(dbgi, entity); + return symconst; + } + case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: + case DECLARATION_TYPE_COMPOUND_MEMBER: + panic("not implemented reference type"); + } + + panic("reference to declaration with unknown type found"); } -#if 0 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); assert(function->datatype->type == TYPE_FUNCTION); - pointer_type_t *pointer_type = (pointer_type_t*) function->datatype; - type_t *points_to = pointer_type->points_to; - - assert(points_to->type == TYPE_FUNCTION); - method_type_t *method_type = (method_type_t*) points_to; - ir_type *ir_method_type = get_ir_type((type_t*) method_type); - ir_type *new_method_type = NULL; + function_type_t *function_type = (function_type_t*) function->datatype; int n_parameters = 0; call_argument_t *argument = call->arguments; - while(argument != NULL) { - n_parameters++; - argument = argument->next; + for( ; argument != NULL; argument = argument->next) { + ++n_parameters; } - if(method_type->variable_arguments) { + ir_type *ir_method_type = get_ir_type((type_t*) function_type); + ir_type *new_method_type = NULL; + if(function_type->variadic || function_type->unspecified_parameters) { /* we need to construct a new method type matching the call * arguments... */ + int n_res = get_method_n_ress(ir_method_type); new_method_type = new_type_method(unique_ident("calltype"), - n_parameters, - get_method_n_ress(ir_method_type)); + n_parameters, n_res); set_method_calling_convention(new_method_type, get_method_calling_convention(ir_method_type)); set_method_additional_properties(new_method_type, get_method_additional_properties(ir_method_type)); - for(int i = 0; i < get_method_n_ress(ir_method_type); ++i) { + for(int i = 0; i < n_res; ++i) { set_method_res_type(new_method_type, i, get_method_res_type(ir_method_type, i)); } @@ -654,10 +697,9 @@ static ir_node *call_expression_to_firm(const call_expression_t *call) argument = call->arguments; int n = 0; - while(argument != NULL) { + for( ; argument != NULL; argument = argument->next) { expression_t *expression = argument->expression; - - ir_node *arg_node = expression_to_firm(expression); + ir_node *arg_node = expression_to_firm(expression); in[n] = arg_node; if(new_method_type != NULL) { @@ -665,9 +707,9 @@ static ir_node *call_expression_to_firm(const call_expression_t *call) set_method_param_type(new_method_type, n, irtype); } - argument = argument->next; n++; } + assert(n == n_parameters); if(new_method_type != NULL) ir_method_type = new_method_type; @@ -679,9 +721,9 @@ static ir_node *call_expression_to_firm(const call_expression_t *call) ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular); set_store(mem); - type_t *result_type = method_type->result_type; + type_t *result_type = function_type->result_type; ir_node *result = NULL; - if(result_type->type != TYPE_VOID) { + if(result_type != type_void) { ir_mode *mode = get_ir_mode(result_type); ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result); result = new_d_Proj(dbgi, resproj, mode, 0); @@ -689,22 +731,542 @@ static ir_node *call_expression_to_firm(const call_expression_t *call) return result; } -#endif -static ir_node *expression_to_firm(expression_t *expression) +static ir_node *expression_to_addr(const expression_t *expression); + +static void set_value_for_expression(const expression_t *expression, + ir_node *value) +{ + if(expression->type == EXPR_REFERENCE) { + reference_expression_t *ref = (reference_expression_t*) expression; + + declaration_t *declaration = ref->declaration; + assert(declaration->declaration_type != DECLARATION_TYPE_UNKNOWN); + if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) { + set_value(declaration->v.value_number, value); + return; + } + } + + 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) +{ + ir_mode *value_mode = get_irn_mode(value); + + if(value_mode == dest_mode) + return value; + + if(dest_mode == mode_b) { + ir_node *zero = new_Const(value_mode, get_mode_null(value_mode)); + ir_node *cmp = new_d_Cmp(dbgi, value, zero); + ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg); + return proj; + } + + return new_d_Conv(dbgi, value, dest_mode); +} + +static ir_node *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); + + if(expression->type == UNEXPR_TAKE_ADDRESS) + return expression_to_addr(expression->value); + + const expression_t *value = expression->value; + ir_node *value_node = expression_to_firm(value); + + switch(expression->type) { + case UNEXPR_NEGATE: + return new_d_Minus(dbgi, value_node, mode); + case UNEXPR_PLUS: + return value_node; + case UNEXPR_BITWISE_NEGATE: + return new_d_Not(dbgi, value_node, mode); + case UNEXPR_NOT: + if(get_irn_mode(value_node) != mode_b) { + value_node = create_conv(dbgi, value_node, mode_b); + } + value_node = new_d_Not(dbgi, value_node, mode_b); + if(mode != mode_b) { + value_node = create_conv(dbgi, value_node, mode); + } + return value_node; + 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_CAST: + return create_conv(dbgi, value_node, mode); + + case UNEXPR_TAKE_ADDRESS: + case UNEXPR_INVALID: + break; + } + panic("invalid UNEXPR type found"); +} + +static long get_pnc(binary_expression_type_t type) +{ + switch(type) { + case BINEXPR_EQUAL: return pn_Cmp_Eq; + case BINEXPR_NOTEQUAL: return pn_Cmp_Lg; + case BINEXPR_LESS: return pn_Cmp_Lt; + case BINEXPR_LESSEQUAL: return pn_Cmp_Le; + case BINEXPR_GREATER: return pn_Cmp_Gt; + case BINEXPR_GREATEREQUAL: return pn_Cmp_Ge; + default: + break; + } + panic("trying to get pn_Cmp from non-comparison binexpr type"); +} + +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_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: + case BINEXPR_NOTEQUAL: + case BINEXPR_LESS: + case BINEXPR_LESSEQUAL: + case BINEXPR_GREATER: + case BINEXPR_GREATEREQUAL: { + dbg_info *dbgi = get_dbg_info(&expression->expression.source_position); + ir_node *left = expression_to_firm(expression->left); + ir_node *right = expression_to_firm(expression->right); + ir_node *cmp = new_d_Cmp(dbgi, left, right); + long pnc = get_pnc(type); + ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc); + return proj; + } + case BINEXPR_ASSIGN: { + ir_node *right = expression_to_firm(expression->right); + 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: + return create_arithmetic_binop(expression, new_d_Shl); + case BINEXPR_SHIFTRIGHT: + return create_arithmetic_binop(expression, new_d_Shr); + 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 *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 *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); + 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); + case EXPR_UNARY: + return unary_expression_to_firm((const unary_expression_t*) expression); + case EXPR_BINARY: + return binary_expression_to_firm( + (const binary_expression_t*) expression); + 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); default: break; } panic("unsupported expression found"); } +static ir_node *expression_to_firm(const expression_t *expression) +{ + ir_node *res = _expression_to_firm(expression); + + if(expression->datatype == type_void) + return NULL; + 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); @@ -737,6 +1299,394 @@ static void compound_statement_to_firm(compound_statement_t *compound) } } +static void expression_statement_to_firm(expression_statement_t *statement) +{ + 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_modeb(statement->condition); + + /* make sure we have a mode_b 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); + + 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); + } + + /* the false (blocks) */ + if(statement->false_statement != NULL) { + ir_node *false_block = new_immBlock(); + add_immBlock_pred(false_block, false_proj); + mature_immBlock(false_block); + + statement_to_firm(statement->false_statement); + if(get_cur_block() != NULL) { + ir_node *jmp = new_Jmp(); + add_immBlock_pred(fallthrough_block, jmp); + } + } else { + add_immBlock_pred(fallthrough_block, false_proj); + } + mature_immBlock(fallthrough_block); + + set_cur_block(fallthrough_block); +} + +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(); + } + + /* create the header block */ + ir_node *header_block = new_immBlock(); + if(jmp != NULL) { + add_immBlock_pred(header_block, jmp); + } + + /* create the condition */ + 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(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; + + if(get_cur_block() != NULL) { + ir_node *jmp = new_Jmp(); + add_immBlock_pred(header_block, jmp); + } + + 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); + return; + } + + ir_node *body_jmp = new_Jmp(); + add_immBlock_pred(header_block, body_jmp); + mature_immBlock(header_block); + + /* create the condition */ + 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(); + 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 *const condition = expression_to_modeb(statement->condition); + ir_node *const cond = new_d_Cond(dbgi, condition); + ir_node *const true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true); + ir_node *const false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false); + + /* the false block */ + ir_node *const false_block = new_immBlock(); + 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, + declaration_type_t declaration_type, + ir_type *parent_type) +{ + ident *id = new_id_from_str(declaration->symbol->string); + ir_type *irtype = get_ir_type(declaration->type); + ir_entity *entity = new_entity(parent_type, id, irtype); + set_entity_ld_ident(entity, id); + + declaration->declaration_type = declaration_type; + declaration->v.entity = entity; + set_entity_variability(entity, variability_uninitialized); + /* TODO: visibility? */ +} + +static void create_initializer(declaration_t *declaration) +{ + initializer_t *initializer = declaration->init.initializer; + if(initializer == NULL) + return; + + if(initializer->type == INITIALIZER_VALUE) { + assert(initializer->designator == NULL); + assert(initializer->next == NULL); + ir_node *init_node = expression_to_firm(initializer->v.value); + + if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) { + set_value(declaration->v.value_number, init_node); + } else { + ir_entity *entity = declaration->v.entity; + ir_mode *mode = get_ir_mode(declaration->type); + init_node = create_conv(NULL, init_node, mode); + + set_entity_variability(entity, variability_initialized); + set_atomic_ent_value(entity, init_node); + } + } else { + assert(initializer->type == INITIALIZER_LIST); + panic("list initializer not supported yet"); + } +} + +static void create_local_variable(declaration_t *declaration) +{ + bool needs_entity = declaration->address_taken; + + assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN); + + if(needs_entity) { + ir_type *frame_type = get_irg_frame_type(current_ir_graph); + create_declaration_entity(declaration, + DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY, + frame_type); + } else { + declaration->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE; + declaration->v.value_number = next_value_number_function; + ++next_value_number_function; + } + + create_initializer(declaration); +} + +static void declaration_statement_to_firm(declaration_statement_t *statement) +{ + declaration_t *declaration = statement->declarations_begin; + declaration_t *end = statement->declarations_end->next; + for( ; declaration != end; declaration = declaration->next) { + type_t *type = declaration->type; + + switch(declaration->storage_class) { + case STORAGE_CLASS_TYPEDEF: + continue; + case STORAGE_CLASS_STATIC: + panic("static local vars not implemented yet"); + case STORAGE_CLASS_ENUM_ENTRY: + panic("enum entry declaration in local block found"); + case STORAGE_CLASS_EXTERN: + panic("extern declaration in local block found"); + case STORAGE_CLASS_NONE: + case STORAGE_CLASS_AUTO: + case STORAGE_CLASS_REGISTER: + if(type->type == TYPE_FUNCTION) { + panic("nested functions not supported yet"); + } else { + create_local_variable(declaration); + } + continue; + } + panic("invalid storage class found"); + } +} + +static void create_jump_statement(const statement_t *statement, + ir_node *target_block) +{ + 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 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) { + 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); + 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 void statement_to_firm(statement_t *statement) { switch(statement->type) { @@ -746,6 +1696,36 @@ static void statement_to_firm(statement_t *statement) case STATEMENT_RETURN: return_statement_to_firm((return_statement_t*) statement); return; + case STATEMENT_EXPRESSION: + expression_statement_to_firm((expression_statement_t*) statement); + return; + 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; default: break; } @@ -759,18 +1739,47 @@ static int get_function_n_local_vars(declaration_t *declaration) return 30; } -static void create_function(declaration_t *declaration) +static void initialize_function_parameters(declaration_t *declaration) { - ir_entity *entity = get_entity_function(declaration); + ir_graph *irg = current_ir_graph; + ir_node *args = get_irg_args(irg); + ir_node *start_block = get_irg_start_block(irg); + + int n = 0; + declaration_t *parameter = declaration->context.declarations; + for( ; parameter != NULL; parameter = parameter->next) { + assert(parameter->declaration_type == DECLARATION_TYPE_UNKNOWN); + + if(parameter->address_taken) { + panic("address take from parameter not implemented yet"); + } + + ir_mode *mode = get_ir_mode(parameter->type); + long pn = n; + ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn); + ++n; - //context2firm(declaration->context); + parameter->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE; + parameter->v.value_number = next_value_number_function; + ++next_value_number_function; + + set_value(parameter->v.value_number, proj); + } +} + +static void create_function(declaration_t *declaration) +{ + ir_entity *entity = get_function_entity(declaration); if(declaration->init.statement == NULL) return; - int n_local_vars = get_function_n_local_vars(declaration); - ir_graph *irg = new_ir_graph(entity, n_local_vars); - ir_node *first_block = get_cur_block(); + 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); statement_to_firm(declaration->init.statement); @@ -778,7 +1787,22 @@ 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); } @@ -815,15 +1839,39 @@ 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; + type_t *type = declaration->type; if(type->type == TYPE_FUNCTION) { create_function(declaration); } else { - /* TODO... */ + create_global_variable(declaration); } } } @@ -833,5 +1881,10 @@ 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); }