[ic] Also collect known map for relational comparison.

src/x64/code-stubs-x64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/bootstrapper.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
 #include "src/ic/handler-compiler.h"
@@ skipping 3665 matching lines @@
 }
 
 
 void CompareICStub::GenerateKnownObjects(MacroAssembler* masm) {
   Label miss;
   Handle<WeakCell> cell = Map::WeakCellForMap(known_map_);
   Condition either_smi = masm->CheckEitherSmi(rdx, rax);
   __ j(either_smi, &miss, Label::kNear);
 
   __ GetWeakValue(rdi, cell);
-  __ movp(rcx, FieldOperand(rax, HeapObject::kMapOffset));
-  __ movp(rbx, FieldOperand(rdx, HeapObject::kMapOffset));
-  __ cmpp(rcx, rdi);
+  __ cmpp(FieldOperand(rdx, HeapObject::kMapOffset), rdi);
   __ j(not_equal, &miss, Label::kNear);
-  __ cmpp(rbx, rdi);
+  __ cmpp(FieldOperand(rax, HeapObject::kMapOffset), rdi);
   __ j(not_equal, &miss, Label::kNear);
 
-  __ subp(rax, rdx);
-  __ ret(0);
+  if (Token::IsEqualityOp(op())) {
+    __ subp(rax, rdx);
+    __ ret(0);
+  } else if (is_strong(strength())) {
+    __ TailCallRuntime(Runtime::kThrowStrongModeImplicitConversion, 0, 1);
+  } else {
+    __ PopReturnAddressTo(rcx);
+    __ Push(rdx);
+    __ Push(rax);
+    __ Push(Smi::FromInt(NegativeComparisonResult(GetCondition())));
+    __ PushReturnAddressFrom(rcx);
+    __ TailCallRuntime(Runtime::kCompare, 3, 1);
+  }
 
   __ bind(&miss);
   GenerateMiss(masm);
 }
 
 
 void CompareICStub::GenerateMiss(MacroAssembler* masm) {
   {
     // Call the runtime system in a fresh internal frame.
     FrameScope scope(masm, StackFrame::INTERNAL);
@@ skipping 1853 matching lines @@
                            kStackSpace, nullptr, return_value_operand, NULL);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64