Revert "Add support to load/store byte fields." and "MIPS: Add support to load/store byte fields.".
This reverts commit r17079 and r17085. Will reland after fix. TBR=jkummerow@chromium.org Review URL: https://codereview.chromium.org/25679008 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17099 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
parent
36072e610c
commit
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@ -3042,12 +3042,7 @@ void LCodeGen::DoLoadNamedField(LLoadNamedField* instr) {
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if (access.IsExternalMemory()) {
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Register result = ToRegister(instr->result());
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MemOperand operand = MemOperand(object, offset);
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if (access.representation().IsByte()) {
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__ ldrb(result, operand);
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} else {
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__ ldr(result, operand);
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}
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__ ldr(result, MemOperand(object, offset));
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return;
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}
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@ -3058,15 +3053,11 @@ void LCodeGen::DoLoadNamedField(LLoadNamedField* instr) {
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}
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Register result = ToRegister(instr->result());
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if (!access.IsInobject()) {
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__ ldr(result, FieldMemOperand(object, JSObject::kPropertiesOffset));
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object = result;
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}
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MemOperand operand = FieldMemOperand(object, offset);
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if (access.representation().IsByte()) {
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__ ldrb(result, operand);
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if (access.IsInobject()) {
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__ ldr(result, FieldMemOperand(object, offset));
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} else {
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__ ldr(result, operand);
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__ ldr(result, FieldMemOperand(object, JSObject::kPropertiesOffset));
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__ ldr(result, FieldMemOperand(result, offset));
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}
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}
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@ -4172,12 +4163,7 @@ void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) {
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if (access.IsExternalMemory()) {
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Register value = ToRegister(instr->value());
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MemOperand operand = MemOperand(object, offset);
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if (representation.IsByte()) {
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__ strb(value, operand);
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} else {
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__ str(value, operand);
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}
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__ str(value, MemOperand(object, offset));
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return;
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}
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@ -4222,12 +4208,7 @@ void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) {
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instr->hydrogen()->value()->IsHeapObject()
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? OMIT_SMI_CHECK : INLINE_SMI_CHECK;
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if (access.IsInobject()) {
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MemOperand operand = FieldMemOperand(object, offset);
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if (representation.IsByte()) {
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__ strb(value, operand);
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} else {
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__ str(value, operand);
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}
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__ str(value, FieldMemOperand(object, offset));
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if (instr->hydrogen()->NeedsWriteBarrier()) {
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// Update the write barrier for the object for in-object properties.
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__ RecordWriteField(object,
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@ -4241,12 +4222,7 @@ void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) {
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}
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} else {
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__ ldr(scratch, FieldMemOperand(object, JSObject::kPropertiesOffset));
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MemOperand operand = FieldMemOperand(scratch, offset);
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if (representation.IsByte()) {
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__ strb(value, operand);
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} else {
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__ str(value, operand);
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}
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__ str(value, FieldMemOperand(scratch, offset));
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if (instr->hydrogen()->NeedsWriteBarrier()) {
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// Update the write barrier for the properties array.
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// object is used as a scratch register.
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@ -2829,9 +2829,6 @@ Range* HShl::InferRange(Zone* zone) {
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Range* HLoadNamedField::InferRange(Zone* zone) {
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if (access().representation().IsByte()) {
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return new(zone) Range(0, 255);
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}
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if (access().IsStringLength()) {
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return new(zone) Range(0, String::kMaxLength);
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}
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@ -5954,9 +5954,7 @@ class HLoadNamedField V8_FINAL : public HTemplateInstruction<1> {
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SetOperandAt(0, object);
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Representation representation = access.representation();
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if (representation.IsByte()) {
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set_representation(Representation::Integer32());
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} else if (representation.IsSmi()) {
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if (representation.IsSmi()) {
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set_type(HType::Smi());
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set_representation(representation);
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} else if (representation.IsDouble() ||
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@ -6254,14 +6252,11 @@ class HStoreNamedField V8_FINAL : public HTemplateInstruction<3> {
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if (index == 0 && access().IsExternalMemory()) {
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// object must be external in case of external memory access
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return Representation::External();
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} else if (index == 1) {
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if (field_representation().IsByte() ||
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field_representation().IsInteger32()) {
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return Representation::Integer32();
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} else if (field_representation().IsDouble() ||
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field_representation().IsSmi()) {
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return field_representation();
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}
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} else if (index == 1 &&
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(field_representation().IsDouble() ||
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field_representation().IsSmi() ||
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field_representation().IsInteger32())) {
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return field_representation();
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}
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return Representation::Tagged();
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}
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@ -3225,15 +3225,12 @@ void LCodeGen::DoLoadNamedField(LLoadNamedField* instr) {
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if (access.IsExternalMemory()) {
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Register result = ToRegister(instr->result());
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MemOperand operand = instr->object()->IsConstantOperand()
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? MemOperand::StaticVariable(ToExternalReference(
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LConstantOperand::cast(instr->object())))
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: MemOperand(ToRegister(instr->object()), offset);
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if (access.representation().IsByte()) {
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ASSERT(instr->hydrogen()->representation().IsInteger32());
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__ movzx_b(result, operand);
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if (instr->object()->IsConstantOperand()) {
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ExternalReference external_reference = ToExternalReference(
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LConstantOperand::cast(instr->object()));
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__ mov(result, MemOperand::StaticVariable(external_reference));
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} else {
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__ mov(result, operand);
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__ mov(result, MemOperand(ToRegister(instr->object()), offset));
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}
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return;
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}
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@ -3252,15 +3249,11 @@ void LCodeGen::DoLoadNamedField(LLoadNamedField* instr) {
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}
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Register result = ToRegister(instr->result());
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if (!access.IsInobject()) {
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__ mov(result, FieldOperand(object, JSObject::kPropertiesOffset));
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object = result;
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}
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if (access.representation().IsByte()) {
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ASSERT(instr->hydrogen()->representation().IsInteger32());
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__ movzx_b(result, FieldOperand(object, offset));
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} else {
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if (access.IsInobject()) {
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__ mov(result, FieldOperand(object, offset));
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} else {
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__ mov(result, FieldOperand(object, JSObject::kPropertiesOffset));
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__ mov(result, FieldOperand(result, offset));
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}
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}
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@ -4436,18 +4429,10 @@ void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) {
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: MemOperand(ToRegister(instr->object()), offset);
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if (instr->value()->IsConstantOperand()) {
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LConstantOperand* operand_value = LConstantOperand::cast(instr->value());
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if (representation.IsByte()) {
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__ mov_b(operand, ToInteger32(operand_value));
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} else {
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__ mov(operand, Immediate(ToInteger32(operand_value)));
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}
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__ mov(operand, Immediate(ToInteger32(operand_value)));
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} else {
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Register value = ToRegister(instr->value());
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if (representation.IsByte()) {
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__ mov_b(operand, value);
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} else {
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__ mov(operand, value);
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}
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__ mov(operand, value);
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}
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return;
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}
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@ -4520,28 +4505,17 @@ void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) {
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__ mov(write_register, FieldOperand(object, JSObject::kPropertiesOffset));
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}
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MemOperand operand = FieldOperand(write_register, offset);
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if (instr->value()->IsConstantOperand()) {
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LConstantOperand* operand_value = LConstantOperand::cast(instr->value());
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if (operand_value->IsRegister()) {
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Register value = ToRegister(operand_value);
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if (representation.IsByte()) {
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__ mov_b(operand, value);
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} else {
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__ mov(operand, value);
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}
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__ mov(FieldOperand(write_register, offset), ToRegister(operand_value));
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} else {
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Handle<Object> handle_value = ToHandle(operand_value);
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ASSERT(!instr->hydrogen()->NeedsWriteBarrier());
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__ mov(operand, handle_value);
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__ mov(FieldOperand(write_register, offset), handle_value);
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}
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} else {
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Register value = ToRegister(instr->value());
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if (representation.IsByte()) {
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__ mov_b(operand, value);
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} else {
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__ mov(operand, value);
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}
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__ mov(FieldOperand(write_register, offset), ToRegister(instr->value()));
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}
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if (instr->hydrogen()->NeedsWriteBarrier()) {
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@ -2896,12 +2896,7 @@ void LCodeGen::DoLoadNamedField(LLoadNamedField* instr) {
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if (access.IsExternalMemory()) {
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Register result = ToRegister(instr->result());
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MemOperand operand = MemOperand(object, offset);
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if (access.representation().IsByte()) {
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__ lb(result, operand);
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} else {
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__ lw(result, operand);
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}
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__ lw(result, MemOperand(object, offset));
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return;
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}
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@ -2912,15 +2907,11 @@ void LCodeGen::DoLoadNamedField(LLoadNamedField* instr) {
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}
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Register result = ToRegister(instr->result());
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if (!access.IsInobject()) {
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__ lw(result, FieldMemOperand(object, JSObject::kPropertiesOffset));
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object = result;
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}
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MemOperand operand = FieldMemOperand(object, offset);
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if (access.representation().IsByte()) {
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__ lb(result, operand);
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if (access.IsInobject()) {
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__ lw(result, FieldMemOperand(object, offset));
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} else {
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__ lw(result, operand);
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__ lw(result, FieldMemOperand(object, JSObject::kPropertiesOffset));
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__ lw(result, FieldMemOperand(result, offset));
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}
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}
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@ -4084,12 +4075,7 @@ void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) {
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if (access.IsExternalMemory()) {
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Register value = ToRegister(instr->value());
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MemOperand operand = MemOperand(object, offset);
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if (representation.IsByte()) {
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__ sb(value, operand);
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} else {
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__ sw(value, operand);
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}
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__ sw(value, MemOperand(object, offset));
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return;
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}
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@ -4134,12 +4120,7 @@ void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) {
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instr->hydrogen()->value()->IsHeapObject()
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? OMIT_SMI_CHECK : INLINE_SMI_CHECK;
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if (access.IsInobject()) {
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MemOperand operand = FieldMemOperand(object, offset);
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if (representation.IsByte()) {
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__ sb(value, operand);
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} else {
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__ sw(value, operand);
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}
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__ sw(value, FieldMemOperand(object, offset));
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if (instr->hydrogen()->NeedsWriteBarrier()) {
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// Update the write barrier for the object for in-object properties.
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__ RecordWriteField(object,
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@ -4153,12 +4134,7 @@ void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) {
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}
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} else {
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__ lw(scratch, FieldMemOperand(object, JSObject::kPropertiesOffset));
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MemOperand operand = FieldMemOperand(scratch, offset);
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if (representation.IsByte()) {
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__ sb(value, operand);
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} else {
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__ sw(value, operand);
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}
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__ sw(value, FieldMemOperand(scratch, offset));
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if (instr->hydrogen()->NeedsWriteBarrier()) {
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// Update the write barrier for the properties array.
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// object is used as a scratch register.
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@ -82,7 +82,6 @@ class Representation {
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public:
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enum Kind {
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kNone,
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kByte,
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kSmi,
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kInteger32,
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kDouble,
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@ -96,7 +95,6 @@ class Representation {
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static Representation None() { return Representation(kNone); }
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static Representation Tagged() { return Representation(kTagged); }
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static Representation Byte() { return Representation(kByte); }
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static Representation Smi() { return Representation(kSmi); }
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static Representation Integer32() { return Representation(kInteger32); }
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static Representation Double() { return Representation(kDouble); }
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@ -141,7 +139,6 @@ class Representation {
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Kind kind() const { return static_cast<Kind>(kind_); }
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bool IsNone() const { return kind_ == kNone; }
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bool IsByte() const { return kind_ == kByte; }
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bool IsTagged() const { return kind_ == kTagged; }
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bool IsSmi() const { return kind_ == kSmi; }
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bool IsSmiOrTagged() const { return IsSmi() || IsTagged(); }
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@ -151,7 +148,7 @@ class Representation {
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bool IsHeapObject() const { return kind_ == kHeapObject; }
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bool IsExternal() const { return kind_ == kExternal; }
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bool IsSpecialization() const {
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return IsByte() || IsSmi() || IsInteger32() || IsDouble();
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return kind_ == kInteger32 || kind_ == kDouble || kind_ == kSmi;
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}
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const char* Mnemonic() const;
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@ -2725,13 +2725,14 @@ void LCodeGen::DoLoadNamedField(LLoadNamedField* instr) {
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int offset = access.offset();
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if (access.IsExternalMemory()) {
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ASSERT(!access.representation().IsInteger32());
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Register result = ToRegister(instr->result());
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if (instr->object()->IsConstantOperand()) {
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ASSERT(result.is(rax));
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__ load_rax(ToExternalReference(LConstantOperand::cast(instr->object())));
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} else {
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Register object = ToRegister(instr->object());
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__ Load(result, MemOperand(object, offset), access.representation());
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__ movq(result, MemOperand(object, offset));
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}
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return;
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}
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@ -2745,11 +2746,20 @@ void LCodeGen::DoLoadNamedField(LLoadNamedField* instr) {
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}
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Register result = ToRegister(instr->result());
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if (!access.IsInobject()) {
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if (access.IsInobject()) {
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if (access.representation().IsInteger32()) {
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__ movl(result, FieldOperand(object, offset));
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} else {
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__ movq(result, FieldOperand(object, offset));
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}
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} else {
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__ movq(result, FieldOperand(object, JSObject::kPropertiesOffset));
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object = result;
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if (access.representation().IsInteger32()) {
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__ movl(result, FieldOperand(result, offset));
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} else {
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__ movq(result, FieldOperand(result, offset));
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}
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}
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__ Load(result, FieldOperand(object, offset), access.representation());
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}
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@ -3871,16 +3881,16 @@ void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) {
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int offset = access.offset();
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if (access.IsExternalMemory()) {
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ASSERT(!access.representation().IsInteger32());
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ASSERT(!instr->hydrogen()->NeedsWriteBarrier());
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Register value = ToRegister(instr->value());
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if (instr->object()->IsConstantOperand()) {
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ASSERT(value.is(rax));
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ASSERT(!access.representation().IsSpecialization());
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LConstantOperand* object = LConstantOperand::cast(instr->object());
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__ store_rax(ToExternalReference(object));
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} else {
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Register object = ToRegister(instr->object());
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__ Store(MemOperand(object, offset), value, representation);
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__ movq(MemOperand(object, offset), value);
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}
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return;
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}
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@ -3949,16 +3959,24 @@ void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) {
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if (instr->value()->IsConstantOperand()) {
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LConstantOperand* operand_value = LConstantOperand::cast(instr->value());
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if (operand_value->IsRegister()) {
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Register value = ToRegister(operand_value);
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__ Store(FieldOperand(write_register, offset), value, representation);
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if (access.representation().IsInteger32()) {
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__ movl(FieldOperand(write_register, offset),
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ToRegister(operand_value));
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} else {
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__ movq(FieldOperand(write_register, offset),
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ToRegister(operand_value));
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}
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} else {
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Handle<Object> handle_value = ToHandle(operand_value);
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ASSERT(!instr->hydrogen()->NeedsWriteBarrier());
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__ Move(FieldOperand(write_register, offset), handle_value);
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}
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} else {
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Register value = ToRegister(instr->value());
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__ Store(FieldOperand(write_register, offset), value, representation);
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if (access.representation().IsInteger32()) {
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__ movl(FieldOperand(write_register, offset), ToRegister(instr->value()));
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} else {
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__ movq(FieldOperand(write_register, offset), ToRegister(instr->value()));
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}
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}
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if (instr->hydrogen()->NeedsWriteBarrier()) {
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@ -2060,14 +2060,7 @@ LInstruction* LChunkBuilder::DoStoreContextSlot(HStoreContextSlot* instr) {
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LInstruction* LChunkBuilder::DoLoadNamedField(HLoadNamedField* instr) {
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// Use the special mov rax, moffs64 encoding for external
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// memory accesses with 64-bit word-sized values.
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if (instr->access().IsExternalMemory() &&
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instr->access().offset() == 0 &&
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(instr->access().representation().IsSmi() ||
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instr->access().representation().IsTagged() ||
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instr->access().representation().IsHeapObject() ||
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instr->access().representation().IsExternal())) {
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if (instr->access().IsExternalMemory() && instr->access().offset() == 0) {
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LOperand* obj = UseRegisterOrConstantAtStart(instr->object());
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return DefineFixed(new(zone()) LLoadNamedField(obj), rax);
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}
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@ -947,28 +947,6 @@ void MacroAssembler::Cvtlsi2sd(XMMRegister dst, const Operand& src) {
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}
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void MacroAssembler::Load(Register dst, const Operand& src, Representation r) {
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if (r.IsByte()) {
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movzxbl(dst, src);
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} else if (r.IsInteger32()) {
|
||||
movl(dst, src);
|
||||
} else {
|
||||
movq(dst, src);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void MacroAssembler::Store(const Operand& dst, Register src, Representation r) {
|
||||
if (r.IsByte()) {
|
||||
movb(dst, src);
|
||||
} else if (r.IsInteger32()) {
|
||||
movl(dst, src);
|
||||
} else {
|
||||
movq(dst, src);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void MacroAssembler::Set(Register dst, int64_t x) {
|
||||
if (x == 0) {
|
||||
xorl(dst, dst);
|
||||
|
@ -781,10 +781,6 @@ class MacroAssembler: public Assembler {
|
||||
// ---------------------------------------------------------------------------
|
||||
// Macro instructions.
|
||||
|
||||
// Load/store with specific representation.
|
||||
void Load(Register dst, const Operand& src, Representation r);
|
||||
void Store(const Operand& dst, Register src, Representation r);
|
||||
|
||||
// Load a register with a long value as efficiently as possible.
|
||||
void Set(Register dst, int64_t x);
|
||||
void Set(const Operand& dst, int64_t x);
|
||||
|
Loading…
Reference in New Issue
Block a user