Index: src/x64/lithium-codegen-x64.cc |
diff --git a/src/x64/lithium-codegen-x64.cc b/src/x64/lithium-codegen-x64.cc |
index f26db274575686f9c9ea81d9e19ebacd1e6bd6ed..2cd94044616ab368c0939633a452d6eba60f0128 100644 |
--- a/src/x64/lithium-codegen-x64.cc |
+++ b/src/x64/lithium-codegen-x64.cc |
@@ -1724,6 +1724,40 @@ void LCodeGen::DoIsSmiAndBranch(LIsSmiAndBranch* instr) { |
} |
+void LCodeGen::DoIsUndetectable(LIsUndetectable* instr) { |
+ Register input = ToRegister(instr->InputAt(0)); |
+ Register result = ToRegister(instr->result()); |
+ |
+ ASSERT(instr->hydrogen()->value()->representation().IsTagged()); |
+ Label false_label, done; |
+ __ JumpIfSmi(input, &false_label); |
+ __ movq(result, FieldOperand(input, HeapObject::kMapOffset)); |
+ __ testb(FieldOperand(result, Map::kBitFieldOffset), |
+ Immediate(1 << Map::kIsUndetectable)); |
+ __ j(zero, &false_label); |
+ __ LoadRoot(result, Heap::kTrueValueRootIndex); |
+ __ jmp(&done); |
+ __ bind(&false_label); |
+ __ LoadRoot(result, Heap::kFalseValueRootIndex); |
+ __ bind(&done); |
+} |
+ |
+ |
+void LCodeGen::DoIsUndetectableAndBranch(LIsUndetectableAndBranch* instr) { |
+ Register input = ToRegister(instr->InputAt(0)); |
+ Register temp = ToRegister(instr->TempAt(0)); |
+ |
+ int true_block = chunk_->LookupDestination(instr->true_block_id()); |
+ int false_block = chunk_->LookupDestination(instr->false_block_id()); |
+ |
+ __ JumpIfSmi(input, chunk_->GetAssemblyLabel(false_block)); |
+ __ movq(temp, FieldOperand(input, HeapObject::kMapOffset)); |
+ __ testb(FieldOperand(temp, Map::kBitFieldOffset), |
+ Immediate(1 << Map::kIsUndetectable)); |
+ EmitBranch(true_block, false_block, not_zero); |
+} |
+ |
+ |
static InstanceType TestType(HHasInstanceType* instr) { |
InstanceType from = instr->from(); |
InstanceType to = instr->to(); |