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);
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)
}
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:
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;
- ir_node *value_node = expression_to_firm(value);
+ 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);
+ }
+ }
+
+ 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 *mode;
+ type_t *type_left = skip_typeref(expression->left->base.type);
+ type_t *type_right = skip_typeref(expression->right->base.type);
- ir_mode *const mode = get_ir_mode(type);
- value = create_conv(dbgi, value, mode);
- set_value_for_expression(expression->left, value);
-
- 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");
+ }
+}
+
+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);
- default: panic("unexpected binary expression type in create_divmod()");
+ 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);
}
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 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)
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");
projects / cparser / commitdiff