[strong] Disallow implicit conversions for comparison

src/x64/lithium-codegen-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.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/base/bits.h"
 #include "src/code-factory.h"
@@ skipping 2530 matching lines @@
   __ testb(FieldOperand(temp, Map::kBitFieldOffset),
            Immediate(1 << Map::kIsUndetectable));
   EmitBranch(instr, not_zero);
 }
 
 
 void LCodeGen::DoStringCompareAndBranch(LStringCompareAndBranch* instr) {
   DCHECK(ToRegister(instr->context()).is(rsi));
   Token::Value op = instr->op();
 
-  Handle<Code> ic = CodeFactory::CompareIC(isolate(), op).code();
+  Handle<Code> ic = CodeFactory::CompareIC(isolate(), op, SLOPPY).code();
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
 
   Condition condition = TokenToCondition(op, false);
   __ testp(rax, rax);
 
   EmitBranch(instr, condition);
 }
 
 
 static InstanceType TestType(HHasInstanceTypeAndBranch* instr) {
@@ skipping 263 matching lines @@
   __ bind(&load_false);
   __ LoadRoot(rax, Heap::kFalseValueRootIndex);
   __ bind(&done);
 }
 
 
 void LCodeGen::DoCmpT(LCmpT* instr) {
   DCHECK(ToRegister(instr->context()).is(rsi));
   Token::Value op = instr->op();
 
-  Handle<Code> ic = CodeFactory::CompareIC(isolate(), op).code();
+  Handle<Code> ic =
+      CodeFactory::CompareIC(isolate(), op, instr->language_mode()).code();
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
 
   Condition condition = TokenToCondition(op, false);
   Label true_value, done;
   __ testp(rax, rax);
   __ j(condition, &true_value, Label::kNear);
   __ LoadRoot(ToRegister(instr->result()), Heap::kFalseValueRootIndex);
   __ jmp(&done, Label::kNear);
   __ bind(&true_value);
   __ LoadRoot(ToRegister(instr->result()), Heap::kTrueValueRootIndex);
@@ skipping 3107 matching lines @@
   CallRuntime(Runtime::kPushBlockContext, 2, instr);
   RecordSafepoint(Safepoint::kNoLazyDeopt);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64