[stubs] Unify (and optimize) implementation of ToObject.

src/ppc/code-stubs-ppc.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_PPC
 
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
@@ skipping 2708 matching lines @@
   __ GetBuiltinFunction(r4, Builtins::CALL_NON_FUNCTION);
   __ Jump(masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(),
           RelocInfo::CODE_TARGET);
 }
 
 
 static void EmitWrapCase(MacroAssembler* masm, int argc, Label* cont) {
   // Wrap the receiver and patch it back onto the stack.
   {
     FrameAndConstantPoolScope frame_scope(masm, StackFrame::INTERNAL);
-    __ Push(r4, r6);
-    __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION);
+    __ push(r4);
+    __ mr(r3, r6);
+    ToObjectStub stub(masm->isolate());
+    __ CallStub(&stub);
     __ pop(r4);
   }
   __ StoreP(r3, MemOperand(sp, argc * kPointerSize), r0);
   __ b(cont);
 }
 
 
 static void CallFunctionNoFeedback(MacroAssembler* masm, int argc,
                                    bool needs_checks, bool call_as_method) {
   // r4 : the function to call
@@ skipping 3085 matching lines @@
                            kStackUnwindSpace, NULL,
                            MemOperand(fp, 6 * kPointerSize), NULL);
 }
 
 
 #undef __
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_PPC