Introduce extended mode.

src/mips/lithium-codegen-mips.cc

Index: src/mips/lithium-codegen-mips.cc
diff --git a/src/mips/lithium-codegen-mips.cc b/src/mips/lithium-codegen-mips.cc
index ca1d2b5bb524b0e8d01fca52e55c88703578a9fb..6123b13f6274dcee6a7a4f4a3cf48d3fe022f862 100644
--- a/src/mips/lithium-codegen-mips.cc
+++ b/src/mips/lithium-codegen-mips.cc
@@ -157,7 +157,7 @@ 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;
     __ Branch(&ok, eq, t1, Operand(zero_reg));
 
@@ -2172,7 +2172,7 @@ void LCodeGen::DoStoreGlobalGeneric(LStoreGlobalGeneric* instr) {
   ASSERT(ToRegister(instr->value()).is(a0));
 
   __ li(a2, 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);
@@ -3271,7 +3271,7 @@ void LCodeGen::DoStoreNamedGeneric(LStoreNamedGeneric* instr) {
 
   // Name is always in a2.
   __ li(a2, 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);
@@ -3452,7 +3452,7 @@ void LCodeGen::DoStoreKeyedGeneric(LStoreKeyedGeneric* instr) {
   ASSERT(ToRegister(instr->key()).is(a1));
   ASSERT(ToRegister(instr->value()).is(a0));
 
-  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);
@@ -4338,7 +4338,7 @@ 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());
     __ li(a1, Operand(shared_info));
     __ push(a1);
     CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr);