Introduce extended mode.

src/ia32/lithium-ia32.h

Index: src/ia32/lithium-ia32.h
diff --git a/src/ia32/lithium-ia32.h b/src/ia32/lithium-ia32.h
index 98487b463019b1606f304bdcda89a1fe31ff4f29..fd40e18331fae3d278a720eafc260f1438c77239 100644
--- a/src/ia32/lithium-ia32.h
+++ b/src/ia32/lithium-ia32.h
@@ -1256,7 +1256,7 @@ class LStoreGlobalGeneric: public LTemplateInstruction<0, 3, 0> {
   LOperand* global_object() { return InputAt(1); }
   Handle<Object> name() const { return hydrogen()->name(); }
   LOperand* value() { return InputAt(2); }
-  bool strict_mode() { return hydrogen()->strict_mode(); }
+  StrictModeFlag strict_mode_flag() { return hydrogen()->strict_mode_flag(); }
 };
 
 
@@ -1635,7 +1635,6 @@ class LStoreNamedGeneric: public LTemplateInstruction<0, 3, 0> {
   LOperand* value() { return inputs_[2]; }
   Handle<Object> name() const { return hydrogen()->name(); }
   StrictModeFlag strict_mode_flag() { return hydrogen()->strict_mode_flag(); }
-  bool strict_mode() { return strict_mode_flag() == kStrictMode; }
 };
 
 
@@ -1725,7 +1724,7 @@ class LStoreKeyedGeneric: public LTemplateInstruction<0, 4, 0> {
   LOperand* object() { return inputs_[1]; }
   LOperand* key() { return inputs_[2]; }
   LOperand* value() { return inputs_[3]; }
-  bool strict_mode() { return hydrogen()->strict_mode(); }
+  StrictModeFlag strict_mode_flag() { return hydrogen()->strict_mode_flag(); }
 };