#include <assert.h>
#include <string.h>
+#include <stdbool.h>
#include <libfirm/firm.h>
#include <libfirm/adt/obst.h>
+#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;
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;
+static bool saw_default_label;
+static ir_node **imature_blocks;
+
+typedef enum declaration_type_t {
+ DECLARATION_TYPE_UNKNOWN,
+ DECLARATION_TYPE_FUNCTION,
+ DECLARATION_TYPE_GLOBAL_VARIABLE,
+ DECLARATION_TYPE_LOCAL_VARIABLE,
+ DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
+ DECLARATION_TYPE_COMPOUND_MEMBER,
+ DECLARATION_TYPE_LABEL_BLOCK,
+} declaration_type_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)
void init_ast2firm(void)
{
type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
- type_void = make_atomic_type(ATOMIC_TYPE_VOID, 0);
- type_int = make_atomic_type(ATOMIC_TYPE_INT, 0);
+ type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
+ type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
ir_type_int = get_ir_type(type_int);
ir_type_const_char = get_ir_type(type_const_char);
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)
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) {
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;
}
-static ir_type *get_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);
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;
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;
* 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;
- 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 *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;
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);
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) {
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;
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);
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;
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);
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;
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;
}
-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);
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);
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;
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);
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 = skip_typeref(declaration->type);
+
+ switch((declaration_type_t) declaration->declaration_type) {
+ case DECLARATION_TYPE_UNKNOWN:
+ break;
+ 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_GLOBAL_VARIABLE: {
+ ir_entity *entity = declaration->v.entity;
+ ir_node *symconst = create_symconst(dbgi, entity);
+ return symconst;
+ }
+ case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: {
+ ir_entity *entity = declaration->v.entity;
+ ir_node *frame = get_irg_frame(current_ir_graph);
+ ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
+
+ return sel;
+ }
+ case DECLARATION_TYPE_COMPOUND_MEMBER:
+ case DECLARATION_TYPE_LABEL_BLOCK:
+ panic("not implemented reference type");
+ }
+
+ panic("reference to declaration with unknown type found");
}
-#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));
}
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) {
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;
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);
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_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:
+ 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:
+ 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 *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:
return const_to_firm((const const_t*) expression);
case EXPR_STRING_LITERAL:
return string_literal_to_firm((const string_literal_t*) expression);
- default:
+ 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);
+ 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(res != NULL && 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;
}
}
+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_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);
+ mature_immBlock(false_block);
+ return;
+ }
+
+ ir_node *body_jmp = new_Jmp();
+ add_immBlock_pred(header_block, body_jmp);
+ mature_immBlock(header_block);
+
+ /* create the condition */
+ set_cur_block(header_block);
+ 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 {
+ keep_alive(header_block);
+ true_proj = new_Jmp();
+ false_proj = NULL;
+ }
+
+ /* 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,
+ 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;
+
+ 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)
+{
+ assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
+
+ bool needs_entity = declaration->address_taken;
+ type_t *type = skip_typeref(declaration->type);
+
+ 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);
+ 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)
+{
+ 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 *const old_switch_cond = current_switch_cond;
+ ir_node *const old_break_label = break_label;
+ const bool old_saw_default_label = saw_default_label;
+ current_switch_cond = cond;
+ break_label = break_block;
+
+ statement_to_firm(statement->body);
+
+ if(get_cur_block() != NULL) {
+ ir_node *jmp = new_Jmp();
+ add_immBlock_pred(break_block, jmp);
+ }
+
+ if (!saw_default_label) {
+ set_cur_block(get_nodes_block(cond));
+ ir_node *const proj = new_d_defaultProj(dbgi, cond,
+ MAGIC_DEFAULT_PN_NUMBER);
+ add_immBlock_pred(break_block, proj);
+ }
+
+ assert(current_switch_cond == cond);
+ assert(break_label == break_block);
+ current_switch_cond = old_switch_cond;
+ break_label = old_break_label;
+ saw_default_label = old_saw_default_label;
+
+ mature_immBlock(break_block);
+ set_cur_block(break_block);
+}
+
+static long fold_constant(const expression_t *expression)
+{
+ ir_graph *old_current_ir_graph = current_ir_graph;
+ current_ir_graph = get_const_code_irg();
+
+ ir_node *cnst = expression_to_firm(expression);
+ if(!is_Const(cnst)) {
+ panic("couldn't fold constantl");
+ }
+ tarval *tv = get_Const_tarval(cnst);
+ if(!tarval_is_long(tv)) {
+ panic("folded constant not an integer");
+ }
+
+ long res = get_tarval_long(tv);
+
+ current_ir_graph = old_current_ir_graph;
+ return res;
+}
+
+static void case_label_to_firm(const case_label_statement_t *statement)
+{
+ dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
+
+ ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
+
+ /* let's create a node and hope firm constant folding creates a Const
+ * node... */
+ ir_node *proj;
+ set_cur_block(get_nodes_block(current_switch_cond));
+ if(statement->expression) {
+ long pn = fold_constant(statement->expression);
+ if(pn == MAGIC_DEFAULT_PN_NUMBER) {
+ /* oops someone detected our cheating... */
+ panic("magic default pn used");
+ }
+ proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
+ } else {
+ saw_default_label = true;
+ proj = new_d_defaultProj(dbgi, current_switch_cond,
+ MAGIC_DEFAULT_PN_NUMBER);
+ }
+
+ ir_node *block = new_immBlock();
+ if (fallthrough != NULL) {
+ add_immBlock_pred(block, fallthrough);
+ }
+ add_immBlock_pred(block, proj);
+ mature_immBlock(block);
+}
+
+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) {
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;
+ case STATEMENT_LABEL:
+ label_to_firm((label_statement_t*) statement);
+ return;
+ case STATEMENT_GOTO:
+ goto_to_firm((goto_statement_t*) statement);
+ return;
default:
break;
}
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);
+ type_t *type = parameter->type;
- //context2firm(declaration->context);
+ bool needs_entity = parameter->address_taken;
+ if(type->type == TYPE_COMPOUND_STRUCT
+ || type->type == TYPE_COMPOUND_UNION) {
+ needs_entity = true;
+ }
+
+ if(needs_entity) {
+ panic("entities for function parameters 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;
+
+ 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();
+ 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);
statement_to_firm(declaration->init.statement);
/* 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];
+ // ยง5.1.2.2.3 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);
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);
}
}
}
/* 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);
}
projects / cparser / blobdiff