Make the strict-mode calling convention for contextual calls the default one.

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 d63c2bb9cfec3a30f21ba620e500b85302870f30..464cc958959a49743ae59609218c0069fdfc5ae1 100644
--- a/src/ia32/stub-cache-ia32.cc
+++ b/src/ia32/stub-cache-ia32.cc
@@ -2468,24 +2468,12 @@ void StubCompiler::GenerateBooleanCheck(Register object, Label* miss) {
 }
 
 
-void CallStubCompiler::PatchGlobalProxy(Handle<Object> object,
-                                        Handle<JSFunction> function) {
+void CallStubCompiler::PatchImplicitReceiver(Handle<Object> object) {
   if (object->IsGlobalObject()) {
     const int argc = arguments().immediate();
     const int receiver_offset = (argc + 1) * kPointerSize;
-    __ LoadHeapObject(edx, handle(function->context()->global_proxy()));
-    __ mov(Operand(esp, receiver_offset), edx);
-  }
-}
-
-
-void CallStubCompiler::PatchGlobalProxy(Handle<Object> object,
-                                        Register function) {
-  if (object->IsGlobalObject()) {
-    FetchGlobalProxy(masm(), edx, function);
-    const int argc = arguments().immediate();
-    const int receiver_offset = (argc + 1) * kPointerSize;
-    __ mov(Operand(esp, receiver_offset), edx);
+    __ mov(Operand(esp, receiver_offset),
+           isolate()->factory()->undefined_value());
   }
 }
 
@@ -2578,7 +2566,7 @@ void CallStubCompiler::GenerateJumpFunction(Handle<Object> object,
   GenerateFunctionCheck(function, ebx, miss);
 
   if (!function.is(edi)) __ mov(edi, function);
-  PatchGlobalProxy(object, function);
+  PatchImplicitReceiver(object);
 
   // Invoke the function.
   __ InvokeFunction(edi, arguments(), JUMP_FUNCTION,
@@ -2693,15 +2681,6 @@ Handle<Code> StoreStubCompiler::CompileStoreCallback(
 #define __ ACCESS_MASM(masm)
 
 
-void CallStubCompiler::FetchGlobalProxy(MacroAssembler* masm,
-                                        Register target,
-                                        Register function) {
-  __ mov(target, FieldOperand(function, JSFunction::kContextOffset));
-  __ mov(target, ContextOperand(target, Context::GLOBAL_OBJECT_INDEX));
-  __ mov(target, FieldOperand(target, GlobalObject::kGlobalReceiverOffset));
-}
-
-
 void StoreStubCompiler::GenerateStoreViaSetter(
     MacroAssembler* masm,
     Handle<JSFunction> setter) {