Introduce extended mode.

src/ia32/stub-cache-ia32.cc

Index: src/ia32/stub-cache-ia32.cc
diff --git a/src/ia32/stub-cache-ia32.cc b/src/ia32/stub-cache-ia32.cc
index 3089a69473ff70da40104773507feee8d63bda23..e1025500e6957303ef979718025625d2cd330b01 100644
--- a/src/ia32/stub-cache-ia32.cc
+++ b/src/ia32/stub-cache-ia32.cc
@@ -2173,7 +2173,8 @@ Handle<Code> CallStubCompiler::CompileCallConstant(Handle<Object> object,
       break;
 
     case STRING_CHECK:
-      if (function->IsBuiltin() || function->shared()->strict_mode()) {
+      if (function->IsBuiltin() ||
+          function->shared()->is_strict_or_extended_mode()) {
         // Check that the object is a string or a symbol.
         __ CmpObjectType(edx, FIRST_NONSTRING_TYPE, eax);
         __ j(above_equal, &miss);
@@ -2191,7 +2192,8 @@ Handle<Code> CallStubCompiler::CompileCallConstant(Handle<Object> object,
       break;
 
     case NUMBER_CHECK:
-      if (function->IsBuiltin() || function->shared()->strict_mode()) {
+      if (function->IsBuiltin() ||
+          function->shared()->is_strict_or_extended_mode()) {
         Label fast;
         // Check that the object is a smi or a heap number.
         __ JumpIfSmi(edx, &fast);
@@ -2212,7 +2214,8 @@ Handle<Code> CallStubCompiler::CompileCallConstant(Handle<Object> object,
       break;
 
     case BOOLEAN_CHECK:
-      if (function->IsBuiltin() || function->shared()->strict_mode()) {
+      if (function->IsBuiltin() ||
+          function->shared()->is_strict_or_extended_mode()) {
         Label fast;
         // Check that the object is a boolean.
         __ cmp(edx, factory()->true_value());