Introduce extended mode.

src/arm/lithium-codegen-arm.cc

Index: src/arm/lithium-codegen-arm.cc
diff --git a/src/arm/lithium-codegen-arm.cc b/src/arm/lithium-codegen-arm.cc
index 54526ed01bf32cfb849b65ffdf1cd52a89005a0d..6336fc87a4bf61fbc6d6f6de9b42fda5852053ce 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -159,7 +159,7 @@ bool LCodeGen::GeneratePrologue() {
   // with undefined when called as functions (without an explicit
   // receiver object). r5 is zero for method calls and non-zero for
   // function calls.
-  if (info_->is_strict_mode() || info_->is_native()) {
+  if (!info_->is_classic_mode() || info_->is_native()) {
     Label ok;
     __ cmp(r5, Operand(0));
     __ b(eq, &ok);
@@ -2289,7 +2289,7 @@ void LCodeGen::DoStoreGlobalGeneric(LStoreGlobalGeneric* instr) {
   ASSERT(ToRegister(instr->value()).is(r0));
 
   __ mov(r2, Operand(instr->name()));
-  Handle<Code> ic = instr->strict_mode()
+  Handle<Code> ic = (instr->strict_mode_flag() == kStrictMode)
       ? isolate()->builtins()->StoreIC_Initialize_Strict()
       : isolate()->builtins()->StoreIC_Initialize();
   CallCode(ic, RelocInfo::CODE_TARGET_CONTEXT, instr);
@@ -3366,7 +3366,7 @@ void LCodeGen::DoStoreNamedGeneric(LStoreNamedGeneric* instr) {
 
   // Name is always in r2.
   __ mov(r2, Operand(instr->name()));
-  Handle<Code> ic = instr->strict_mode()
+  Handle<Code> ic = (instr->strict_mode_flag() == kStrictMode)
       ? isolate()->builtins()->StoreIC_Initialize_Strict()
       : isolate()->builtins()->StoreIC_Initialize();
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
@@ -3532,7 +3532,7 @@ void LCodeGen::DoStoreKeyedGeneric(LStoreKeyedGeneric* instr) {
   ASSERT(ToRegister(instr->key()).is(r1));
   ASSERT(ToRegister(instr->value()).is(r0));
 
-  Handle<Code> ic = instr->strict_mode()
+  Handle<Code> ic = (instr->strict_mode_flag() == kStrictMode)
       ? isolate()->builtins()->KeyedStoreIC_Initialize_Strict()
       : isolate()->builtins()->KeyedStoreIC_Initialize();
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
@@ -4419,7 +4419,7 @@ void LCodeGen::DoFunctionLiteral(LFunctionLiteral* instr) {
   Handle<SharedFunctionInfo> shared_info = instr->shared_info();
   bool pretenure = instr->hydrogen()->pretenure();
   if (!pretenure && shared_info->num_literals() == 0) {
-    FastNewClosureStub stub(shared_info->strict_mode_flag());
+    FastNewClosureStub stub(shared_info->language_mode());
     __ mov(r1, Operand(shared_info));
     __ push(r1);
     CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr);