Introduce LanguageMode, drop StrictMode.

src/ic/x64/ic-compiler-x64.cc

 // Copyright 2014 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/ic/ic.h"
 #include "src/ic/ic-compiler.h"
 
 namespace v8 {
 namespace internal {
 
 #define __ ACCESS_MASM(masm)
 
 
-void PropertyICCompiler::GenerateRuntimeSetProperty(MacroAssembler* masm,
-                                                    StrictMode strict_mode) {
+void PropertyICCompiler::GenerateRuntimeSetProperty(
+    MacroAssembler* masm, LanguageMode language_mode) {
   // Return address is on the stack.
   DCHECK(!rbx.is(StoreDescriptor::ReceiverRegister()) &&
          !rbx.is(StoreDescriptor::NameRegister()) &&
          !rbx.is(StoreDescriptor::ValueRegister()));
 
   __ PopReturnAddressTo(rbx);
   __ Push(StoreDescriptor::ReceiverRegister());
   __ Push(StoreDescriptor::NameRegister());
   __ Push(StoreDescriptor::ValueRegister());
-  __ Push(Smi::FromInt(strict_mode));
+  __ Push(Smi::FromInt(language_mode));
   __ PushReturnAddressFrom(rbx);
 
   // Do tail-call to runtime routine.
   __ TailCallRuntime(Runtime::kSetProperty, 4, 1);
 }
 
 
 #undef __
 #define __ ACCESS_MASM(masm())
 
@@ skipping 94 matching lines @@
       number_of_handled_maps > 1 ? POLYMORPHIC : MONOMORPHIC;
   return GetCode(kind(), type, name, state);
 }
 
 
 #undef __
 }
 }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64