Do not pass the global object as the receiver to strict-mode and

src/x64/full-codegen-x64.cc

Index: src/x64/full-codegen-x64.cc
diff --git a/src/x64/full-codegen-x64.cc b/src/x64/full-codegen-x64.cc
index 2dd00caaaa98961ebf4ffb2aeb6628de808c2241..2d02ccce18008d3ccad85a6d6dc8ae1a06f81a5f 100644
--- a/src/x64/full-codegen-x64.cc
+++ b/src/x64/full-codegen-x64.cc
@@ -3512,6 +3512,39 @@ void FullCodeGenerator::EmitFastAsciiArrayJoin(ZoneList<Expression*>* args) {
 }
 
 
+void FullCodeGenerator::EmitIsNativeOrStrictMode(ZoneList<Expression*>* args) {
+  ASSERT(args->length() == 1);
+
+  // Load the function into rax.
+  VisitForAccumulatorValue(args->at(0));
+
+  // Prepare for the test.
+  Label materialize_true, materialize_false;
+  Label* if_true = NULL;
+  Label* if_false = NULL;
+  Label* fall_through = NULL;
+  context()->PrepareTest(&materialize_true, &materialize_false,
+                         &if_true, &if_false, &fall_through);
+
+  // Test for strict mode function.
+  __ movq(rdx, FieldOperand(rax, JSFunction::kSharedFunctionInfoOffset));
+  __ testb(FieldOperand(rdx, SharedFunctionInfo::kStrictModeByteOffset),
+           Immediate(1 << SharedFunctionInfo::kStrictModeBitWithinByte));
+  __ j(not_equal, if_true);
+
+  // Test for native function.
+  __ testb(FieldOperand(rdx, SharedFunctionInfo::kNativeByteOffset),
+           Immediate(1 << SharedFunctionInfo::kNativeBitWithinByte));
+  __ j(not_equal, if_true);
+
+  // Not native or strict-mode function.
+  __ jmp(if_false);
+
+  PrepareForBailoutBeforeSplit(TOS_REG, true, if_true, if_false);
+  context()->Plug(if_true, if_false);
+}
+
+
 void FullCodeGenerator::VisitCallRuntime(CallRuntime* expr) {
   Handle<String> name = expr->name();
   if (name->length() > 0 && name->Get(0) == '_') {