#include "diagnostic.h"
#include "lang_features.h"
#include "types.h"
+#include "warning.h"
#include "driver/firm_opt.h"
#include "driver/firm_cmdline.h"
DECLARATION_KIND_LABEL_BLOCK,
DECLARATION_KIND_ENUM_ENTRY,
DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE,
- DECLARATION_KIND_COMPOUND_TYPE_COMPLETE
+ DECLARATION_KIND_COMPOUND_TYPE_COMPLETE,
+ DECLARATION_KIND_TYPE
} declaration_kind_t;
static ir_type *get_ir_type(type_t *type);
static ir_mode *mode_int, *mode_uint;
+static ir_node *_expression_to_firm(const expression_t *expression);
static ir_node *expression_to_firm(const expression_t *expression);
static inline ir_mode *get_ir_mode(type_t *type);
+static void create_local_declaration(declaration_t *declaration);
static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind)
{
if( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT))
&& !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) {
char name[64];
- mode_sort sort;
+ ir_mode_sort sort;
unsigned bit_size = size * 8;
bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0;
- mode_arithmetic arithmetic;
+ ir_mode_arithmetic arithmetic;
unsigned modulo_shift;
if(flags & ATOMIC_TYPE_FLAG_INTEGER) {
/* initialize pointer modes */
char name[64];
- mode_sort sort = irms_reference;
+ ir_mode_sort sort = irms_reference;
unsigned bit_size = machine_size;
bool is_signed = 0;
- mode_arithmetic arithmetic = irma_twos_complement;
+ ir_mode_arithmetic arithmetic = irma_twos_complement;
unsigned modulo_shift
= bit_size < machine_size ? machine_size : bit_size;
switch(type->kind) {
case TYPE_ERROR:
- panic("error type occured");
+ panic("error type occurred");
case TYPE_ATOMIC:
return get_atomic_type_size(type->atomic.akind);
case TYPE_COMPLEX:
};
/**
- * Construct firm type from ast struct tyep.
+ * Construct firm type from ast struct type.
*
* As anonymous inner structs get flattened to a single firm type, we might get
* irtype, outer_offset and out_align passed (they represent the position of
bool incomplete, bool is_union)
{
declaration_t *declaration = type->declaration;
- declaration_kind_t kind = declaration->declaration_kind;
+ declaration_kind_t kind = (declaration_kind_t)declaration->declaration_kind;
if(kind == DECLARATION_KIND_COMPOUND_TYPE_COMPLETE
|| (kind == DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE
return mode;
}
-static ident *predef_idents[rts_max];
-
/** Names of the runtime functions. */
static const struct {
int id; /**< the rts id */
} rts_data[] = {
{ rts_debugbreak, 0, "__debugbreak", 0, _MS },
{ rts_abort, 0, "abort", 0, _C89 },
+ { rts_alloca, 1, "alloca", 1, _ALL },
{ rts_abs, 1, "abs", 1, _C89 },
{ rts_labs, 1, "labs", 1, _C89 },
{ rts_llabs, 1, "llabs", 1, _C99 },
{ rts_strncmp, 1, "strncmp", 3, _C89 }
};
+static ident *rts_idents[sizeof(rts_data) / sizeof(rts_data[0])];
+
/**
* Mangles an entity linker (ld) name for win32 usage.
*
declaration_t *declaration);
create_ld_ident_func create_ld_ident = create_ld_ident_linux_elf;
-static ir_entity* get_function_entity(declaration_t *declaration)
+/**
+ * Creates an entity representing a function.
+ *
+ * @param declaration the function declaration
+ */
+static ir_entity *get_function_entity(declaration_t *declaration)
{
if(declaration->declaration_kind == DECLARATION_KIND_FUNCTION)
return declaration->v.entity;
set_entity_visibility(entity, visibility_external_visible);
} else {
set_entity_visibility(entity, visibility_external_allocated);
-
- /* We should check for file scope here, but as long as we compile C only
- this is not needed. */
- int n_params = get_method_n_params(ir_type_method);
- int n_res = get_method_n_ress(ir_type_method);
- int i;
-
- if (n_params == 0 && n_res == 0 && id == predef_idents[rts_abort]) {
- /* found abort(), store for later */
- //abort_ent = ent;
- //abort_tp = ftype;
- } else {
- if (! firm_opt.freestanding) {
- /* check for a known runtime function */
- for (i = 0; i < rts_max; ++i) {
- /* ignore those rts functions not necessary needed for current mode */
- if ((c_mode & rts_data[i].flags) == 0)
- continue;
- if (n_params == rts_data[i].n_params && n_res == rts_data[i].n_res &&
- id == predef_idents[rts_data[i].id])
- rts_entities[rts_data[i].id] = entity;
- }
- }
- }
}
set_entity_allocation(entity, allocation_static);
declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
declaration->v.entity = entity;
+ /* We should check for file scope here, but as long as we compile C only
+ this is not needed. */
+ if (! firm_opt.freestanding) {
+ /* check for a known runtime function */
+ for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
+ if (id != rts_idents[i])
+ continue;
+
+ /* ignore those rts functions not necessary needed for current mode */
+ if ((c_mode & rts_data[i].flags) == 0)
+ continue;
+ assert(rts_entities[rts_data[i].id] == NULL);
+ rts_entities[rts_data[i].id] = entity;
+ }
+ }
+
return entity;
}
+/**
+ * Creates a Const node representing a constant.
+ */
static ir_node *const_to_firm(const const_expression_t *cnst)
{
dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
return new_d_Const(dbgi, mode, tv);
}
+/**
+ * Creates a Const node representing a character constant.
+ */
static ir_node *character_constant_to_firm(const const_expression_t *cnst)
{
dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
return new_d_Const(dbgi, mode, tv);
}
+/**
+ * Creates a Const node representing a wide character constant.
+ */
static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
{
dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
return new_d_Const(dbgi, mode, tv);
}
+/**
+ * Creates a SymConst for a given entity.
+ *
+ * @param dbgi debug info
+ * @param mode the (reference) mode for the SymConst
+ * @param entity the entity
+ */
static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
ir_entity *entity)
{
return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
}
+/**
+ * Creates a SymConst node representing a string constant.
+ *
+ * @param src_pos the source position of the string constant
+ * @param id_prefix a prefix for the name of the generated string constant
+ * @param value the value of the string constant
+ */
static ir_node *string_to_firm(const source_position_t *const src_pos,
const char *const id_prefix,
const string_t *const value)
return create_symconst(dbgi, mode_P_data, entity);
}
+/**
+ * Creates a SymConst node representing a string literal.
+ *
+ * @param literal the string literal
+ */
static ir_node *string_literal_to_firm(
const string_literal_expression_t* literal)
{
&literal->value);
}
+/**
+ * Creates a SymConst node representing a wide string literal.
+ *
+ * @param literal the wide string literal
+ */
static ir_node *wide_string_literal_to_firm(
const wide_string_literal_expression_t* const literal)
{
return create_symconst(dbgi, mode_P_data, entity);
}
-static ir_node *deref_address(type_t *const type, ir_node *const addr,
- dbg_info *const dbgi)
+static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
+ ir_node *const addr)
{
ir_type *irtype = get_ir_type(type);
if (is_compound_type(irtype)
return load_res;
}
+/**
+ * Creates a strict Conv if neccessary.
+ */
static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
{
ir_mode *mode = get_irn_mode(node);
return node;
/* check if there is already a Conv */
- if (get_irn_op(node) == op_Conv) {
+ if (is_Conv(node)) {
/* convert it into a strict Conv */
set_Conv_strict(node, 1);
return node;
}
}
-/* Returns the correct base address depending on whether it is a parameter or a
- * normal local variable */
+/**
+ * Returns the correct base address depending on whether it is a parameter or a
+ * normal local variable.
+ */
static ir_node *get_local_frame(ir_entity *const ent)
{
ir_graph *const irg = current_ir_graph;
declaration_t *declaration = ref->declaration;
type_t *type = skip_typeref(declaration->type);
+ /* make sure the type is constructed */
+ (void) get_ir_type(type);
+
switch((declaration_kind_t) declaration->declaration_kind) {
+ case DECLARATION_KIND_TYPE:
case DECLARATION_KIND_UNKNOWN:
- if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY) {
- break;
- }
- get_ir_type(type);
- /* FALLTHROUGH */
+ break;
case DECLARATION_KIND_ENUM_ENTRY: {
ir_mode *const mode = get_ir_mode(type);
}
case DECLARATION_KIND_GLOBAL_VARIABLE: {
ir_node *const addr = get_global_var_address(dbgi, declaration);
- return deref_address(declaration->type, addr, dbgi);
+ return deref_address(dbgi, declaration->type, addr);
}
case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
ir_entity *entity = declaration->v.entity;
ir_node *frame = get_local_frame(entity);
ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
- return deref_address(declaration->type, sel, dbgi);
+ return deref_address(dbgi, declaration->type, sel);
}
case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
declaration_t *declaration = ref->declaration;
switch((declaration_kind_t) declaration->declaration_kind) {
+ case DECLARATION_KIND_TYPE:
case DECLARATION_KIND_UNKNOWN:
break;
case DECLARATION_KIND_LOCAL_VARIABLE:
panic("reference to declaration with unknown type found");
}
+/**
+ * Transform calls to builtin functions.
+ */
static ir_node *process_builtin_call(const call_expression_t *call)
{
dbg_info *dbgi = get_dbg_info(&call->base.source_position);
return res;
}
+ case T___builtin_huge_val: {
+ ir_mode *mode = get_ir_mode(function_type->function.return_type);
+ tarval *tv = get_mode_infinite(mode);
+ ir_node *res = new_d_Const(dbgi, mode, tv);
+ return res;
+ }
case T___builtin_nan:
case T___builtin_nanf:
case T___builtin_nand: {
}
}
+/**
+ * Transform a call expression.
+ * Handles some special cases, like alloca() calls, which must be resolved BEFORE the inlines runs.
+ * Inlining routines calling alloca() is dangerous, 176.gcc for instance might allocate 2GB instead of
+ * 256 MB if alloca is not handled right...
+ */
static ir_node *call_expression_to_firm(const call_expression_t *call)
{
assert(get_cur_block() != NULL);
if(function->kind == EXPR_BUILTIN_SYMBOL) {
return process_builtin_call(call);
}
+ if(function->kind == EXPR_REFERENCE) {
+ const reference_expression_t *ref = &function->reference;
+ declaration_t *declaration = ref->declaration;
+
+ if((declaration_kind_t)declaration->declaration_kind == DECLARATION_KIND_FUNCTION) {
+ if (declaration->v.entity == rts_entities[rts_alloca]) {
+ /* handle alloca() call */
+ expression_t *argument = call->arguments->expression;
+ ir_node *size = expression_to_firm(argument);
+
+ ir_node *store = get_store();
+ dbg_info *dbgi = get_dbg_info(&call->base.source_position);
+ ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
+ stack_alloc);
+ ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
+ set_store(proj_m);
+ ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
+
+ return res;
+ }
+ }
+ }
ir_node *callee = expression_to_firm(function);
type_t *type = skip_typeref(function->base.type);
return mask1;
}
-static void bitfield_store_to_firm(const unary_expression_t *expression,
- ir_node *value)
+static void bitfield_store_to_firm(const select_expression_t *expression,
+ ir_node *addr, ir_node *value)
{
- expression_t *select = expression->value;
- assert(select->kind == EXPR_SELECT);
- type_t *type = select->base.type;
- assert(type->kind == TYPE_BITFIELD);
- ir_mode *mode = get_ir_mode(type->bitfield.base_type);
- ir_node *addr = expression_to_addr(select);
+ type_t *type = expression->base.type;
+ ir_mode *mode = get_ir_mode(type);
assert(get_irn_mode(value) == mode || is_Bad(value));
dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
/* kill upper bits of value and shift to right position */
- ir_entity *entity = select->select.compound_entry->v.entity;
+ ir_entity *entity = expression->compound_entry->v.entity;
int bitoffset = get_entity_offset_bits_remainder(entity);
ir_type *entity_type = get_entity_type(entity);
int bitsize = get_mode_size_bits(get_type_mode(entity_type));
dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
value = do_strict_conv(dbgi, value);
- if(expression->kind == EXPR_REFERENCE) {
+ if (expression->kind == EXPR_REFERENCE) {
const reference_expression_t *ref = &expression->reference;
declaration_t *declaration = ref->declaration;
assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
- if(declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
+ if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
set_value(declaration->v.value_number, value);
return;
}
}
- if(expression->kind == EXPR_UNARY_BITFIELD_EXTRACT) {
- bitfield_store_to_firm(&expression->unary, value);
- return;
- }
-
ir_node *addr = expression_to_addr(expression);
type_t *type = skip_typeref(expression->base.type);
+
+ if (expression->kind == EXPR_SELECT) {
+ const select_expression_t *select = &expression->select;
+
+ declaration_t *declaration = select->compound_entry;
+ if (declaration->type->kind == TYPE_BITFIELD) {
+ bitfield_store_to_firm(select, addr, value);
+ return;
+ }
+ }
+
assign_value(dbgi, addr, type, value);
}
+static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
+ ir_node *addr)
+{
+ dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
+ type_t *type = expression->base.type;
+ ir_mode *mode = get_ir_mode(type);
+ ir_node *mem = get_store();
+ ir_node *load = new_d_Load(dbgi, mem, 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);
+
+ load_res = create_conv(dbgi, load_res, mode_int);
+
+ set_store(load_mem);
+
+ /* kill upper bits */
+ ir_entity *entity = expression->compound_entry->v.entity;
+ int bitoffset = get_entity_offset_bits_remainder(entity);
+ ir_type *entity_type = get_entity_type(entity);
+ int bitsize = get_mode_size_bits(get_type_mode(entity_type));
+ long shift_bitsl = machine_size - bitoffset - bitsize;
+ assert(shift_bitsl >= 0);
+ tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
+ ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
+ ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
+
+ long shift_bitsr = bitoffset + shift_bitsl;
+ assert(shift_bitsr <= (long) machine_size);
+ tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
+ ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
+ ir_node *shiftr;
+ if(mode_is_signed(mode)) {
+ shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
+ } else {
+ shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
+ }
+
+ return create_conv(dbgi, shiftr, mode);
+}
+
+
+
static ir_node *create_incdec(const unary_expression_t *expression)
{
- dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
- type_t *type = skip_typeref(expression->base.type);
- ir_mode *mode = get_ir_mode(type);
- expression_t *value = expression->value;
+ dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
+ const expression_t *value_expr = expression->value;
+ type_t *value_type = skip_typeref(value_expr->base.type);
+ ir_mode *value_mode = get_ir_mode(value_type);
+ ir_node *value_addr;
+ ir_node *value;
+ int value_number;
+
+ if (value_expr->kind == EXPR_REFERENCE) {
+ const reference_expression_t *ref = &value_expr->reference;
+
+ declaration_t *declaration = ref->declaration;
+ assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
+ if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
+ value_number = declaration->v.value_number;
+ value = get_value(value_number, value_mode);
+ value_addr = NULL;
+ } else {
+ goto need_addr;
+ }
+ } else {
+need_addr:
+ value_addr = expression_to_addr(value_expr);
+ if (value_expr->kind == EXPR_SELECT &&
+ value_expr->select.compound_entry->type->kind == TYPE_BITFIELD){
+ value = bitfield_extract_to_firm(&value_expr->select, value_addr);
+ } else {
+ value = deref_address(dbgi, value_type, value_addr);
+ }
+ }
- ir_node *value_node = expression_to_firm(value);
+ type_t *type = skip_typeref(expression->base.type);
+ ir_mode *mode = get_ir_mode(expression->base.type);
ir_node *offset;
if(is_type_pointer(type)) {
offset = new_Const(mode, get_mode_one(mode));
}
+ ir_node *result;
+ ir_node *store_value;
switch(expression->base.kind) {
- case EXPR_UNARY_POSTFIX_INCREMENT: {
- ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
- set_value_for_expression(value, new_value);
- return value_node;
- }
- case EXPR_UNARY_POSTFIX_DECREMENT: {
- ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
- set_value_for_expression(value, new_value);
- return value_node;
- }
- case EXPR_UNARY_PREFIX_INCREMENT: {
- ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
- set_value_for_expression(value, new_value);
- return new_value;
- }
- case EXPR_UNARY_PREFIX_DECREMENT: {
- ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
- set_value_for_expression(value, new_value);
- return new_value;
- }
+ case EXPR_UNARY_POSTFIX_INCREMENT:
+ result = value;
+ store_value = new_d_Add(dbgi, value, offset, mode);
+ break;
+ case EXPR_UNARY_POSTFIX_DECREMENT:
+ result = value;
+ store_value = new_d_Sub(dbgi, value, offset, mode);
+ break;
+ case EXPR_UNARY_PREFIX_INCREMENT:
+ result = new_d_Add(dbgi, value, offset, mode);
+ store_value = result;
+ break;
+ case EXPR_UNARY_PREFIX_DECREMENT:
+ result = new_d_Sub(dbgi, value, offset, mode);
+ store_value = result;
+ break;
default:
panic("no incdec expr in create_incdec");
- return NULL;
}
+
+ if (value_addr == NULL) {
+ set_value(value_number, store_value);
+ } else {
+ if (value_expr->kind == EXPR_SELECT &&
+ value_expr->select.compound_entry->type->kind == TYPE_BITFIELD){
+ bitfield_store_to_firm(&value_expr->select, value_addr, store_value);
+ } else {
+ assign_value(dbgi, value_addr, value_type, store_value);
+ }
+ }
+
+ return result;
}
static bool is_local_variable(expression_t *expression)
}
}
-static ir_node *bitfield_extract_to_firm(const unary_expression_t *expression)
-{
- expression_t *select = expression->value;
- assert(select->kind == EXPR_SELECT);
-
- type_t *type = select->base.type;
- assert(type->kind == TYPE_BITFIELD);
- ir_mode *mode = get_ir_mode(type->bitfield.base_type);
- dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
- ir_node *addr = expression_to_addr(select);
- ir_node *mem = get_store();
- ir_node *load = new_d_Load(dbgi, mem, 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);
-
- load_res = create_conv(dbgi, load_res, mode_int);
-
- set_store(load_mem);
-
- /* kill upper bits */
- ir_entity *entity = select->select.compound_entry->v.entity;
- int bitoffset = get_entity_offset_bits_remainder(entity);
- ir_type *entity_type = get_entity_type(entity);
- int bitsize = get_mode_size_bits(get_type_mode(entity_type));
- long shift_bitsl = machine_size - bitoffset - bitsize;
- assert(shift_bitsl >= 0);
- tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
- ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
- ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
-
- long shift_bitsr = bitoffset + shift_bitsl;
- assert(shift_bitsr <= (long) machine_size);
- tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
- ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
- ir_node *shiftr;
- if(mode_is_signed(mode)) {
- shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
- } else {
- shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
- }
-
- return create_conv(dbgi, shiftr, mode);
-}
-
static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
{
dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
return new_d_Not(dbgi, value_node, mode);
}
case EXPR_UNARY_NOT: {
- ir_node *value_node = expression_to_firm(value);
- ir_mode *mode = get_ir_mode(type);
- 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;
+ ir_node *value_node = _expression_to_firm(value);
+ value_node = create_conv(dbgi, value_node, mode_b);
+ ir_node *res = new_d_Not(dbgi, value_node, mode_b);
+ return res;
}
case EXPR_UNARY_DEREFERENCE: {
ir_node *value_node = expression_to_firm(value);
type_t *value_type = skip_typeref(value->base.type);
assert(is_type_pointer(value_type));
type_t *points_to = value_type->pointer.points_to;
- return deref_address(points_to, value_node, dbgi);
+ return deref_address(dbgi, points_to, value_node);
}
case EXPR_UNARY_POSTFIX_INCREMENT:
case EXPR_UNARY_POSTFIX_DECREMENT:
return handle_assume(dbgi, value);
else
return NULL;
- case EXPR_UNARY_BITFIELD_EXTRACT:
- return bitfield_extract_to_firm(expression);
default:
break;
panic("invalid UNEXPR type found");
}
+/**
+ * produces a 0/1 depending of the value of a mode_b node
+ */
static ir_node *produce_condition_result(const expression_t *expression,
dbg_info *dbgi)
{
return val;
}
-static ir_node *create_lazy_op(const binary_expression_t *expression)
-{
- dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
- type_t *type = expression->base.type;
- ir_mode *mode = get_ir_mode(type);
-
- if(is_constant_expression(expression->left)) {
- long val = fold_constant(expression->left);
- expression_kind_t ekind = expression->base.kind;
- if((ekind == EXPR_BINARY_LOGICAL_AND && val != 0)
- || (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
- return expression_to_firm(expression->right);
- } else {
- assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0)
- || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0));
- return new_Const(mode, get_mode_one(mode));
- }
- }
-
- return produce_condition_result((const expression_t*) expression, dbgi);
-}
-
-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->base.source_position);
- ir_node *left = expression_to_firm(expression->left);
- ir_node *right = expression_to_firm(expression->right);
- type_t *type = expression->right->base.type;
- /* be careful with the modes, because in arithmetic assign nodes only
- * the right operand has the mode of the arithmetic already */
- ir_mode *mode = get_ir_mode(type);
- left = create_conv(dbgi, left, mode);
- ir_node *res = func(dbgi, left, right, mode);
-
- return res;
-}
-
-static ir_node *pointer_arithmetic(ir_node *const pointer,
- ir_node * integer,
- type_t *const type,
- dbg_info *const dbgi,
- const create_arithmetic_func func)
+static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
+ ir_node *value, type_t *type)
{
pointer_type_t *const pointer_type = &type->pointer;
type_t *const points_to = pointer_type->points_to;
const unsigned elem_size = get_type_size_const(points_to);
assert(elem_size >= 1);
- if (elem_size > 1) {
- integer = create_conv(dbgi, integer, mode_int);
- ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
- ir_node *const mul = new_d_Mul(dbgi, integer, cnst, mode_int);
- integer = mul;
- }
+ if (elem_size == 1)
+ return value;
- ir_mode *const mode = get_ir_mode(type);
- return func(dbgi, pointer, integer, mode);
+ value = create_conv(dbgi, value, mode_int);
+ ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
+ ir_node *const mul = new_d_Mul(dbgi, value, cnst, mode_int);
+ return mul;
}
-static ir_node *create_arithmetic_assign_binop(
- const binary_expression_t *expression, create_arithmetic_func func)
+static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
+ ir_node *left, ir_node *right)
{
- dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
- type_t *const type = skip_typeref(expression->base.type);
- ir_node *value;
-
- if (is_type_pointer(type)) {
- ir_node *const pointer = expression_to_firm(expression->left);
- ir_node * integer = expression_to_firm(expression->right);
- value = pointer_arithmetic(pointer, integer, type, dbgi, func);
- } else {
- value = create_arithmetic_binop(expression, func);
- }
-
- ir_mode *const mode = get_ir_mode(type);
- value = create_conv(dbgi, value, mode);
- set_value_for_expression(expression->left, value);
+ ir_mode *mode;
+ type_t *type_left = skip_typeref(expression->left->base.type);
+ type_t *type_right = skip_typeref(expression->right->base.type);
- return value;
-}
+ expression_kind_t kind = expression->base.kind;
-static ir_node *create_add(const binary_expression_t *expression)
-{
- dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
- ir_node *left = expression_to_firm(expression->left);
- ir_node *right = expression_to_firm(expression->right);
- type_t *type = expression->base.type;
+ switch (kind) {
+ case EXPR_BINARY_SHIFTLEFT:
+ case EXPR_BINARY_SHIFTRIGHT:
+ case EXPR_BINARY_SHIFTLEFT_ASSIGN:
+ case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
+ mode = get_irn_mode(left);
+ right = create_conv(dbgi, right, mode_uint);
+ break;
- expression_t *expr_left = expression->left;
- expression_t *expr_right = expression->right;
- type_t *type_left = skip_typeref(expr_left->base.type);
- type_t *type_right = skip_typeref(expr_right->base.type);
+ case EXPR_BINARY_SUB:
+ if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
+ const pointer_type_t *const ptr_type = &type_left->pointer;
+
+ mode = get_ir_mode(expression->base.type);
+ ir_node *const elem_size = get_type_size(ptr_type->points_to);
+ ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
+ ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
+ ir_node *const no_mem = new_NoMem();
+ ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
+ mode, op_pin_state_floats);
+ return new_d_Proj(dbgi, div, mode, pn_Div_res);
+ }
+ /* fallthrough */
+ case EXPR_BINARY_SUB_ASSIGN:
+ if (is_type_pointer(type_left)) {
+ right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
+ mode = get_ir_mode(type_left);
+ break;
+ }
+ goto normal_node;
- if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
- ir_mode *const mode = get_ir_mode(type);
- return new_d_Add(dbgi, left, right, mode);
- }
+ case EXPR_BINARY_ADD:
+ case EXPR_BINARY_ADD_ASSIGN:
+ if (is_type_pointer(type_left)) {
+ right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
+ mode = get_ir_mode(type_left);
+ break;
+ } else if (is_type_pointer(type_right)) {
+ left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
+ mode = get_ir_mode(type_right);
+ break;
+ }
+ goto normal_node;
- if (is_type_pointer(type_left)) {
- return pointer_arithmetic(left, right, type, dbgi, new_d_Add);
- } else {
- assert(is_type_pointer(type_right));
- return pointer_arithmetic(right, left, type, dbgi, new_d_Add);
+ default:
+normal_node:
+ mode = get_irn_mode(right);
+ left = create_conv(dbgi, left, mode);
+ break;
}
-}
-static ir_node *create_sub(const binary_expression_t *expression)
-{
- dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
- expression_t *const expr_left = expression->left;
- expression_t *const expr_right = expression->right;
- ir_node *const left = expression_to_firm(expr_left);
- ir_node *const right = expression_to_firm(expr_right);
- type_t *const type = expression->base.type;
- type_t *const type_left = skip_typeref(expr_left->base.type);
- type_t *const type_right = skip_typeref(expr_right->base.type);
-
- if (is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
- ir_mode *const mode = get_ir_mode(type);
+ switch (kind) {
+ case EXPR_BINARY_ADD_ASSIGN:
+ case EXPR_BINARY_ADD:
+ return new_d_Add(dbgi, left, right, mode);
+ case EXPR_BINARY_SUB_ASSIGN:
+ case EXPR_BINARY_SUB:
return new_d_Sub(dbgi, left, right, mode);
- } else if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
- const pointer_type_t *const ptr_type = &type_left->pointer;
-
- ir_node *const elem_size = get_type_size(ptr_type->points_to);
- ir_mode *const mode = get_ir_mode(type);
- ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
- ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
- ir_node *const no_mem = new_NoMem();
- ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size, mode,
- op_pin_state_floats);
- return new_d_Proj(dbgi, div, mode, pn_Div_res);
- }
-
- assert(is_type_pointer(type_left));
- return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub);
-}
-
-static ir_node *create_shift(const binary_expression_t *expression)
-{
- dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
- ir_node *left = expression_to_firm(expression->left);
- ir_node *right = expression_to_firm(expression->right);
- type_t *type = expression->base.type;
- ir_mode *mode = get_ir_mode(type);
-
- /* firm always wants the shift count to be unsigned */
- right = create_conv(dbgi, right, mode_uint);
-
- ir_node *res;
-
- switch(expression->base.kind) {
- case EXPR_BINARY_SHIFTLEFT_ASSIGN:
+ case EXPR_BINARY_MUL_ASSIGN:
+ case EXPR_BINARY_MUL:
+ return new_d_Mul(dbgi, left, right, mode);
+ case EXPR_BINARY_BITWISE_AND:
+ case EXPR_BINARY_BITWISE_AND_ASSIGN:
+ return new_d_And(dbgi, left, right, mode);
+ case EXPR_BINARY_BITWISE_OR:
+ case EXPR_BINARY_BITWISE_OR_ASSIGN:
+ return new_d_Or(dbgi, left, right, mode);
+ case EXPR_BINARY_BITWISE_XOR:
+ case EXPR_BINARY_BITWISE_XOR_ASSIGN:
+ return new_d_Eor(dbgi, left, right, mode);
case EXPR_BINARY_SHIFTLEFT:
- res = new_d_Shl(dbgi, left, right, mode);
- break;
+ case EXPR_BINARY_SHIFTLEFT_ASSIGN:
+ return new_d_Shl(dbgi, left, right, mode);
+ case EXPR_BINARY_SHIFTRIGHT:
case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
- case EXPR_BINARY_SHIFTRIGHT: {
- expression_t *expr_left = expression->left;
- type_t *type_left = skip_typeref(expr_left->base.type);
-
- 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->base.source_position);
- ir_node *left = expression_to_firm(expression->left);
- ir_node *right = expression_to_firm(expression->right);
- ir_node *pin = new_Pin(new_NoMem());
- /* be careful with the modes, because in arithmetic assign nodes only
- * the right operand has the mode of the arithmetic already */
- type_t *type = expression->right->base.type;
- ir_mode *mode = get_ir_mode(type);
- left = create_conv(dbgi, left, mode);
- ir_node *op;
- ir_node *res;
-
- switch (expression->base.kind) {
+ if (mode_is_signed(mode)) {
+ return new_d_Shrs(dbgi, left, right, mode);
+ } else {
+ return new_d_Shr(dbgi, left, right, mode);
+ }
case EXPR_BINARY_DIV:
- case EXPR_BINARY_DIV_ASSIGN:
+ case EXPR_BINARY_DIV_ASSIGN: {
+ ir_node *pin = new_Pin(new_NoMem());
+ ir_node *op;
+ ir_node *res;
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);
op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
res = new_d_Proj(dbgi, op, mode, pn_Div_res);
}
- break;
-
+ return res;
+ }
case EXPR_BINARY_MOD:
- case EXPR_BINARY_MOD_ASSIGN:
+ case EXPR_BINARY_MOD_ASSIGN: {
+ ir_node *pin = new_Pin(new_NoMem());
assert(!mode_is_float(mode));
- op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
- res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
- break;
+ ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
+ op_pin_state_floats);
+ ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
+ return res;
+ }
+ default:
+ panic("unexpected expression kind");
+ }
+}
- default: panic("unexpected binary expression type in create_divmod()");
+static ir_node *create_lazy_op(const binary_expression_t *expression)
+{
+ dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
+ type_t *type = expression->base.type;
+ ir_mode *mode = get_ir_mode(type);
+
+ if(is_constant_expression(expression->left)) {
+ long val = fold_constant(expression->left);
+ expression_kind_t ekind = expression->base.kind;
+ if((ekind == EXPR_BINARY_LOGICAL_AND && val != 0)
+ || (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
+ return expression_to_firm(expression->right);
+ } else {
+ assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0)
+ || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0));
+ return new_Const(mode, get_mode_one(mode));
+ }
}
- return res;
+ return produce_condition_result((const expression_t*) expression, dbgi);
}
-static ir_node *create_arithmetic_assign_divmod(
- const binary_expression_t *expression)
+typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
+ ir_node *right, ir_mode *mode);
+
+static ir_node *create_assign_binop(const binary_expression_t *expression)
{
- ir_node * value = create_divmod(expression);
- dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
- type_t *const type = expression->base.type;
- ir_mode *const mode = get_ir_mode(type);
+ dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
+ const expression_t *left_expr = expression->left;
+ ir_mode *left_mode = get_ir_mode(left_expr->base.type);
+ type_t *left_type = skip_typeref(left_expr->base.type);
+ ir_node *left_addr;
+ int value_number;
+ ir_node *left;
- assert(type->kind != TYPE_POINTER);
+ if (left_expr->kind == EXPR_REFERENCE) {
+ const reference_expression_t *ref = &left_expr->reference;
- value = create_conv(dbgi, value, mode);
- set_value_for_expression(expression->left, value);
+ declaration_t *declaration = ref->declaration;
+ assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
+ if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
+ value_number = declaration->v.value_number;
+ left = get_value(value_number, left_mode);
+ left_addr = NULL;
+ } else {
+ goto need_addr;
+ }
+ } else {
+need_addr:
+ left_addr = expression_to_addr(left_expr);
+ if (left_expr->kind == EXPR_SELECT &&
+ left_expr->select.compound_entry->type->kind == TYPE_BITFIELD) {
+ left = bitfield_extract_to_firm(&left_expr->select, left_addr);
+ } else {
+ left = deref_address(dbgi, left_type, left_addr);
+ }
+ }
- return value;
-}
+ ir_node *right = expression_to_firm(expression->right);
-static ir_node *create_arithmetic_assign_shift(
- const binary_expression_t *expression)
-{
- ir_node * value = create_shift(expression);
- dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
- type_t *const type = expression->base.type;
- ir_mode *const mode = get_ir_mode(type);
+ ir_node *result = create_op(dbgi, expression, left, right);
- value = create_conv(dbgi, value, mode);
- set_value_for_expression(expression->left, value);
+ result = create_conv(dbgi, result, left_mode);
+ if (left_addr == NULL) {
+ set_value(value_number, result);
+ } else {
+ if (left_expr->kind == EXPR_SELECT &&
+ left_expr->select.compound_entry->type->kind == TYPE_BITFIELD) {
+ bitfield_store_to_firm(&left_expr->select, left_addr, result);
+ } else {
+ assign_value(dbgi, left_addr, left_type, result);
+ }
+ }
- return value;
+ return result;
}
static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
return right;
}
case EXPR_BINARY_ADD:
- return create_add(expression);
case EXPR_BINARY_SUB:
- return create_sub(expression);
case EXPR_BINARY_MUL:
- return create_arithmetic_binop(expression, new_d_Mul);
+ case EXPR_BINARY_DIV:
+ case EXPR_BINARY_MOD:
case EXPR_BINARY_BITWISE_AND:
- return create_arithmetic_binop(expression, new_d_And);
case EXPR_BINARY_BITWISE_OR:
- return create_arithmetic_binop(expression, new_d_Or);
case EXPR_BINARY_BITWISE_XOR:
- return create_arithmetic_binop(expression, new_d_Eor);
case EXPR_BINARY_SHIFTLEFT:
case EXPR_BINARY_SHIFTRIGHT:
- return create_shift(expression);
- case EXPR_BINARY_DIV:
- case EXPR_BINARY_MOD:
- return create_divmod(expression);
+ {
+ dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
+ ir_node *left = expression_to_firm(expression->left);
+ ir_node *right = expression_to_firm(expression->right);
+ return create_op(dbgi, expression, left, right);
+ }
case EXPR_BINARY_LOGICAL_AND:
case EXPR_BINARY_LOGICAL_OR:
return create_lazy_op(expression);
case EXPR_BINARY_COMMA:
- expression_to_firm(expression->left);
- return expression_to_firm(expression->right);
+ /* create side effects of left side */
+ (void) expression_to_firm(expression->left);
+ return _expression_to_firm(expression->right);
+
case EXPR_BINARY_ADD_ASSIGN:
- return create_arithmetic_assign_binop(expression, new_d_Add);
case EXPR_BINARY_SUB_ASSIGN:
- return create_arithmetic_assign_binop(expression, new_d_Sub);
case EXPR_BINARY_MUL_ASSIGN:
- return create_arithmetic_assign_binop(expression, new_d_Mul);
case EXPR_BINARY_MOD_ASSIGN:
case EXPR_BINARY_DIV_ASSIGN:
- return create_arithmetic_assign_divmod(expression);
case EXPR_BINARY_BITWISE_AND_ASSIGN:
- return create_arithmetic_assign_binop(expression, new_d_And);
case EXPR_BINARY_BITWISE_OR_ASSIGN:
- return create_arithmetic_assign_binop(expression, new_d_Or);
case EXPR_BINARY_BITWISE_XOR_ASSIGN:
- return create_arithmetic_assign_binop(expression, new_d_Eor);
case EXPR_BINARY_SHIFTLEFT_ASSIGN:
case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
- return create_arithmetic_assign_shift(expression);
+ return create_assign_binop(expression);
case EXPR_BINARY_BUILTIN_EXPECT:
- return expression_to_firm(expression->left);
+ return _expression_to_firm(expression->left);
default:
panic("TODO binexpr type");
}
(const expression_t*) expression);
type = skip_typeref(type);
- return deref_address(type, addr, dbgi);
+ return deref_address(dbgi, type, addr);
}
static long get_offsetof_offset(const offsetof_expression_t *expression)
return new_SymConst(mode, sym, symconst_type_align);
}
+static bool constant_folding;
+
static void init_ir_types(void);
long fold_constant(const expression_t *expression)
{
+ bool constant_folding_old = constant_folding;
+ constant_folding = true;
+
init_ir_types();
assert(is_constant_expression(expression));
panic("result of constant folding is not integer\n");
}
+ constant_folding = constant_folding_old;
+
return get_tarval_long(tv);
}
return val;
}
+/**
+ * Returns an IR-node representing the address of a field.
+ */
static ir_node *select_addr(const select_expression_t *expression)
{
dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
static ir_node *select_to_firm(const select_expression_t *expression)
{
- dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
- ir_node *addr = select_addr(expression);
- type_t *type = revert_automatic_type_conversion(
+ dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
+ ir_node *addr = select_addr(expression);
+ type_t *type = revert_automatic_type_conversion(
(const expression_t*) expression);
- type = skip_typeref(type);
+ type = skip_typeref(type);
+
+ declaration_t *entry = expression->compound_entry;
+ type_t *entry_type = skip_typeref(entry->type);
- return deref_address(type, addr, dbgi);
+ if (entry_type->kind == TYPE_BITFIELD) {
+ return bitfield_extract_to_firm(expression, addr);
+ }
+
+ return deref_address(dbgi, type, addr);
}
/* Values returned by __builtin_classify_type. */
static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
{
- type_t *const type = expr->base.type;
- ir_node *const ap = expression_to_firm(expr->ap);
- dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
- ir_node *const res = deref_address(type, ap, dbgi);
+ type_t *const type = expr->base.type;
+ ir_node *const ap = expression_to_firm(expr->ap);
+ dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
+ ir_node *const res = deref_address(dbgi, type, ap);
- ir_node *const cnst = get_type_size(expr->base.type);
- ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
+ ir_node *const cnst = get_type_size(expr->base.type);
+ ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
set_value_for_expression(expr->ap, add);
return res;
return expression_to_firm(expression->value);
}
+/**
+ * Returns a IR-node representing an lvalue of the given expression.
+ */
static ir_node *expression_to_addr(const expression_t *expression)
{
switch(expression->kind) {
return NULL;
}
+/**
+ * creates firm nodes for an expression. The difference between this function
+ * and expression_to_firm is, that this version might produce mode_b nodes
+ * instead of mode_Is.
+ */
static ir_node *_expression_to_firm(const expression_t *expression)
{
+#ifndef NDEBUG
+ if (!constant_folding) {
+ assert(!expression->base.transformed);
+ ((expression_t*) expression)->base.transformed = true;
+ }
+#endif
+
switch(expression->kind) {
case EXPR_CHARACTER_CONSTANT:
return character_constant_to_firm(&expression->conste);
panic("invalid expression found");
}
+static bool produces_mode_b(const expression_t *expression)
+{
+ switch (expression->kind) {
+ case EXPR_BINARY_EQUAL:
+ case EXPR_BINARY_NOTEQUAL:
+ case EXPR_BINARY_LESS:
+ case EXPR_BINARY_LESSEQUAL:
+ case EXPR_BINARY_GREATER:
+ case EXPR_BINARY_GREATEREQUAL:
+ case EXPR_BINARY_ISGREATER:
+ case EXPR_BINARY_ISGREATEREQUAL:
+ case EXPR_BINARY_ISLESS:
+ case EXPR_BINARY_ISLESSEQUAL:
+ case EXPR_BINARY_ISLESSGREATER:
+ case EXPR_BINARY_ISUNORDERED:
+ case EXPR_UNARY_NOT:
+ return true;
+
+ case EXPR_BINARY_BUILTIN_EXPECT:
+ return produces_mode_b(expression->binary.left);
+
+ default:
+ return false;
+ }
+}
+
static ir_node *expression_to_firm(const expression_t *expression)
{
- ir_node *res = _expression_to_firm(expression);
+ if (!produces_mode_b(expression)) {
+ ir_node *res = _expression_to_firm(expression);
+ assert(res == NULL || get_irn_mode(res) != mode_b);
+ return res;
+ }
- if(res != NULL && get_irn_mode(res) == mode_b) {
+ if (is_constant_expression(expression)) {
+ ir_node *res = _expression_to_firm(expression);
ir_mode *mode = get_ir_mode(expression->base.type);
- if(is_Const(res)) {
- if(is_Const_null(res)) {
- return new_Const_long(mode, 0);
- } else {
- assert(is_Const_one(res));
- return new_Const_long(mode, 1);
- }
+ assert(is_Const(res));
+ if (is_Const_null(res)) {
+ return new_Const_long(mode, 0);
+ } else {
+ return new_Const_long(mode, 1);
}
-
- dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
- return produce_condition_result(expression, dbgi);
}
- return res;
+ /* we have to produce a 0/1 from the mode_b expression */
+ dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
+ return produce_condition_result(expression, dbgi);
}
static ir_node *expression_to_modeb(const expression_t *expression)
set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
++next_value_number_function;
}
-
- create_declaration_initializer(declaration);
}
static void create_local_static_variable(declaration_t *declaration)
static ir_node *compound_statement_to_firm(compound_statement_t *compound)
{
+ declaration_t *declaration = compound->scope.declarations;
+ for( ; declaration != NULL; declaration = declaration->next) {
+ create_local_declaration(declaration);
+ }
+
ir_node *result = NULL;
statement_t *statement = compound->statements;
for( ; statement != NULL; statement = statement->base.next) {
- //context2firm(&statement->scope);
-
if(statement->base.next == NULL
&& statement->kind == STATEMENT_EXPRESSION) {
result = expression_statement_to_firm(
static void create_local_declaration(declaration_t *declaration)
{
- if(declaration->symbol == NULL)
+ if (declaration->namespc != NAMESPACE_NORMAL)
+ return;
+ /* construct type */
+ (void) get_ir_type(declaration->type);
+ if (declaration->symbol == NULL) {
return;
+ }
type_t *type = skip_typeref(declaration->type);
}
return;
case STORAGE_CLASS_ENUM_ENTRY:
+ /* should already be handled */
+ assert(declaration->declaration_kind == DECLARATION_KIND_ENUM_ENTRY);
+ return;
case STORAGE_CLASS_TYPEDEF:
+ declaration->declaration_kind = DECLARATION_KIND_TYPE;
+ return;
case STORAGE_CLASS_THREAD:
case STORAGE_CLASS_THREAD_EXTERN:
case STORAGE_CLASS_THREAD_STATIC:
- return;
+ break;
}
panic("invalid storage class found");
}
+static void initialize_local_declaration(declaration_t *declaration)
+{
+ if(declaration->symbol == NULL || declaration->namespc != NAMESPACE_NORMAL)
+ return;
+
+ switch ((declaration_kind_t) declaration->declaration_kind) {
+ case DECLARATION_KIND_LOCAL_VARIABLE:
+ case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
+ create_declaration_initializer(declaration);
+ return;
+
+ case DECLARATION_KIND_LABEL_BLOCK:
+ case DECLARATION_KIND_COMPOUND_MEMBER:
+ case DECLARATION_KIND_GLOBAL_VARIABLE:
+ case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
+ case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
+ case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
+ case DECLARATION_KIND_FUNCTION:
+ case DECLARATION_KIND_TYPE:
+ case DECLARATION_KIND_ENUM_ENTRY:
+ return;
+
+ case DECLARATION_KIND_UNKNOWN:
+ panic("can't initialize unknwon declaration");
+ }
+ panic("invalid declaration kind");
+}
+
static void declaration_statement_to_firm(declaration_statement_t *statement)
{
declaration_t *declaration = statement->declarations_begin;
for( ; declaration != end; declaration = declaration->next) {
if(declaration->namespc != NAMESPACE_NORMAL)
continue;
- create_local_declaration(declaration);
+ initialize_local_declaration(declaration);
}
}
{
ir_node *cur_block = get_cur_block();
- ir_node *fallthrough_block = new_immBlock();
+ ir_node *fallthrough_block = NULL;
/* the true (blocks) */
- ir_node *true_block;
+ ir_node *true_block = NULL;
if (statement->true_statement != NULL) {
true_block = new_immBlock();
statement_to_firm(statement->true_statement);
- if(get_cur_block() != NULL) {
+ if (get_cur_block() != NULL) {
ir_node *jmp = new_Jmp();
+ if (fallthrough_block == NULL)
+ fallthrough_block = new_immBlock();
add_immBlock_pred(fallthrough_block, jmp);
}
- } else {
- true_block = fallthrough_block;
}
/* the false (blocks) */
- ir_node *false_block;
- if(statement->false_statement != NULL) {
+ ir_node *false_block = NULL;
+ if (statement->false_statement != NULL) {
false_block = new_immBlock();
statement_to_firm(statement->false_statement);
- if(get_cur_block() != NULL) {
+ if (get_cur_block() != NULL) {
ir_node *jmp = new_Jmp();
+ if (fallthrough_block == NULL)
+ fallthrough_block = new_immBlock();
add_immBlock_pred(fallthrough_block, jmp);
}
- } else {
- false_block = fallthrough_block;
}
/* create the condition */
- if(cur_block != NULL) {
+ if (cur_block != NULL) {
+ if (true_block == NULL || false_block == NULL) {
+ if (fallthrough_block == NULL)
+ fallthrough_block = new_immBlock();
+ if (true_block == NULL)
+ true_block = fallthrough_block;
+ if (false_block == NULL)
+ false_block = fallthrough_block;
+ }
+
set_cur_block(cur_block);
create_condition_evaluation(statement->condition, true_block,
false_block);
}
mature_immBlock(true_block);
- if(false_block != fallthrough_block) {
+ if (false_block != fallthrough_block) {
mature_immBlock(false_block);
}
- mature_immBlock(fallthrough_block);
+ if (fallthrough_block != NULL) {
+ mature_immBlock(fallthrough_block);
+ }
set_cur_block(fallthrough_block);
}
static void for_statement_to_firm(for_statement_t *statement)
{
ir_node *jmp = NULL;
+
+ /* create declarations */
+ declaration_t *declaration = statement->scope.declarations;
+ for( ; declaration != NULL; declaration = declaration->next) {
+ create_local_declaration(declaration);
+ }
+ declaration = statement->scope.declarations;
+ for( ; declaration != NULL; declaration = declaration->next) {
+ initialize_local_declaration(declaration);
+ }
+
if (get_cur_block() != NULL) {
if(statement->initialisation != NULL) {
expression_to_firm(statement->initialisation);
}
- /* create declarations */
- declaration_t *declaration = statement->scope.declarations;
- for( ; declaration != NULL; declaration = declaration->next) {
- create_local_declaration(declaration);
- }
-
jmp = new_Jmp();
}
set_cur_block(NULL);
}
+static ir_node *get_break_label(void)
+{
+ if (break_label == NULL) {
+ ir_node *cur_block = get_cur_block();
+ break_label = new_immBlock();
+ set_cur_block(cur_block);
+ }
+ return break_label;
+}
+
static void switch_statement_to_firm(const switch_statement_t *statement)
{
dbg_info *dbgi = get_dbg_info(&statement->base.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;
+ saw_default_label = false;
current_switch_cond = cond;
- break_label = break_block;
+ break_label = NULL;
if (statement->body != NULL) {
statement_to_firm(statement->body);
}
- if(get_cur_block() != NULL) {
+ if (get_cur_block() != NULL) {
ir_node *jmp = new_Jmp();
- add_immBlock_pred(break_block, jmp);
+ add_immBlock_pred(get_break_label(), 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);
+ add_immBlock_pred(get_break_label(), proj);
}
+ if (break_label != NULL) {
+ mature_immBlock(break_label);
+ }
+ set_cur_block(break_label);
+
assert(current_switch_cond == cond);
- assert(break_label == break_block);
current_switch_cond = old_switch_cond;
break_label = old_break_label;
saw_default_label = old_saw_default_label;
-
- mature_immBlock(break_block);
- set_cur_block(break_block);
}
static void case_label_to_firm(const case_label_statement_t *statement)
errorf(&statement->base.source_position, "__leave not supported yet");
}
+/**
+ * Transform a statement.
+ */
static void statement_to_firm(statement_t *statement)
{
+#ifndef NDEBUG
+ assert(!statement->base.transformed);
+ statement->base.transformed = true;
+#endif
+
switch(statement->kind) {
case STATEMENT_INVALID:
panic("invalid statement found");
declaration_statement_to_firm(&statement->declaration);
return;
case STATEMENT_BREAK:
- create_jump_statement(statement, break_label);
+ create_jump_statement(statement, get_break_label());
return;
case STATEMENT_CONTINUE:
create_jump_statement(statement, continue_label);
}
}
+/**
+ * Create code for a function.
+ */
static void create_function(declaration_t *declaration)
{
ir_entity *function_entity = get_function_entity(declaration);
in[0] = new_Const(mode, get_mode_null(mode));
} else {
in[0] = new_Unknown(mode);
+ if(warning.return_type) {
+ warningf(&declaration->source_position,
+ "missing return statement at end of non-void function '%Y'",
+ declaration->symbol);
+ }
}
ret = new_Return(get_store(), 1, in);
}
/* OS option must be set to the backend */
const char *s = "ia32-gasmode=linux";
switch (firm_opt.os_support) {
- case OS_SUPPORT_WIN32:
+ case OS_SUPPORT_MINGW:
create_ld_ident = create_ld_ident_win32;
s = "ia32-gasmode=mingw";
break;
/* create idents for all known runtime functions */
for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
- predef_idents[rts_data[i].id] = new_id_from_str(rts_data[i].name);
+ rts_idents[i] = new_id_from_str(rts_data[i].name);
}
}
projects / cparser / blobdiff