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Unified Diff: src/x64/lithium-codegen-x64.cc

Issue 61893009: Add initial hydrogenized NewStringAddStub. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Add test case for --new-string-add. Created 7 years, 1 month ago
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Index: src/x64/lithium-codegen-x64.cc
diff --git a/src/x64/lithium-codegen-x64.cc b/src/x64/lithium-codegen-x64.cc
index 20b1897dece7fead0710c6001647f149300331e4..cd29af4a4e115af0de2136adf298957ba4f45ad7 100644
--- a/src/x64/lithium-codegen-x64.cc
+++ b/src/x64/lithium-codegen-x64.cc
@@ -4077,6 +4077,10 @@ void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) {
if (operand_value->IsRegister()) {
Register value = ToRegister(operand_value);
__ Store(FieldOperand(write_register, offset), value, representation);
+ } else if (representation.IsInteger32()) {
+ int32_t value = ToInteger32(operand_value);
+ ASSERT(!instr->hydrogen()->NeedsWriteBarrier());
+ __ movl(FieldOperand(write_register, offset), Immediate(value));
} else {
Handle<Object> handle_value = ToHandle(operand_value);
ASSERT(!instr->hydrogen()->NeedsWriteBarrier());
@@ -4400,10 +4404,18 @@ void LCodeGen::DoTrapAllocationMemento(LTrapAllocationMemento* instr) {
void LCodeGen::DoStringAdd(LStringAdd* instr) {
ASSERT(ToRegister(instr->context()).is(rsi));
- EmitPushTaggedOperand(instr->left());
- EmitPushTaggedOperand(instr->right());
- StringAddStub stub(instr->hydrogen()->flags());
- CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr);
+ if (FLAG_new_string_add) {
+ ASSERT(ToRegister(instr->left()).is(rdx));
+ ASSERT(ToRegister(instr->right()).is(rax));
+ NewStringAddStub stub(instr->hydrogen()->flags(),
+ isolate()->heap()->GetPretenureMode());
+ CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr);
+ } else {
+ EmitPushTaggedOperand(instr->left());
+ EmitPushTaggedOperand(instr->right());
+ StringAddStub stub(instr->hydrogen()->flags());
+ CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr);
+ }
}
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