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X64: Implement DoHasInstanceType

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Review URL: http://codereview.chromium.org/6581036

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6940 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
ricow@chromium.org 2011-02-24 19:25:22 +00:00
parent da463ab484
commit c416ddf166
2 changed files with 18 additions and 3 deletions
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15
src/x64/lithium-codegen-x64.cc
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@ -1579,7 +1579,20 @@ static Condition BranchCondition(HHasInstanceType* instr) {
void LCodeGen::DoHasInstanceType(LHasInstanceType* instr) {
Abort("Unimplemented: %s", "DoHasInstanceType");
Register input = ToRegister(instr->InputAt(0));
Register result = ToRegister(instr->result());
ASSERT(instr->hydrogen()->value()->representation().IsTagged());
__ testl(input, Immediate(kSmiTagMask));
NearLabel done, is_false;
__ j(zero, &is_false);
__ CmpObjectType(input, TestType(instr->hydrogen()), result);
__ j(NegateCondition(BranchCondition(instr->hydrogen())), &is_false);
__ LoadRoot(result, Heap::kTrueValueRootIndex);
__ jmp(&done);
__ bind(&is_false);
__ LoadRoot(result, Heap::kFalseValueRootIndex);
__ bind(&done);
}

6
src/x64/lithium-x64.cc
View File

@ -1502,8 +1502,10 @@ LInstruction* LChunkBuilder::DoIsSmi(HIsSmi* instr) {
LInstruction* LChunkBuilder::DoHasInstanceType(HHasInstanceType* instr) {
Abort("Unimplemented: %s", "DoHasInstanceType");
return NULL;
ASSERT(instr->value()->representation().IsTagged());
LOperand* value = UseRegisterAtStart(instr->value());
return DefineAsRegister(new LHasInstanceType(value));
}