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

src/mips/stub-cache-mips.cc

Index: src/mips/stub-cache-mips.cc
diff --git a/src/mips/stub-cache-mips.cc b/src/mips/stub-cache-mips.cc
index 361e67f4ca7b03b663db17b5b695594b955f568c..cddf1e721cbe9db042e72cd62881347cd58eed60 100644
--- a/src/mips/stub-cache-mips.cc
+++ b/src/mips/stub-cache-mips.cc
@@ -2337,23 +2337,11 @@ 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 * kPointerSize;
-    __ li(a3, handle(function->context()->global_proxy()));
-    __ sw(a3, MemOperand(sp, receiver_offset));
-  }
-}
-
-
-void CallStubCompiler::PatchGlobalProxy(Handle<Object> object,
-                                        Register function) {
-  if (object->IsGlobalObject()) {
-    FetchGlobalProxy(masm(), a3, function);
-    const int argc = arguments().immediate();
-    const int receiver_offset = argc * kPointerSize;
+    __ LoadRoot(a3, Heap::kUndefinedValueRootIndex);
     __ sw(a3, MemOperand(sp, receiver_offset));
   }
 }
@@ -2452,7 +2440,8 @@ void CallStubCompiler::GenerateJumpFunction(Handle<Object> object,
   ASSERT(function.is(a1));
   // Check that the function really is a function.
   GenerateFunctionCheck(function, a3, miss);
-  PatchGlobalProxy(object, function);
+  PatchImplicitReceiver(object);
+
   // Invoke the function.
   __ InvokeFunction(a1, arguments(), JUMP_FUNCTION,
                     NullCallWrapper(), call_kind());
@@ -2570,15 +2559,6 @@ Handle<Code> StoreStubCompiler::CompileStoreCallback(
 #define __ ACCESS_MASM(masm)
 
 
-void CallStubCompiler::FetchGlobalProxy(MacroAssembler* masm,
-                                        Register target,
-                                        Register function) {
-  __ lw(target, FieldMemOperand(function, JSFunction::kContextOffset));
-  __ lw(target, ContextOperand(target, Context::GLOBAL_OBJECT_INDEX));
-  __ lw(target, FieldMemOperand(target, GlobalObject::kGlobalReceiverOffset));
-}
-
-
 void StoreStubCompiler::GenerateStoreViaSetter(
     MacroAssembler* masm,
     Handle<JSFunction> setter) {