Remove deprecated CEntryStub cache in generic lowering.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/619043002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24358 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/compiler/js-generic-lowering.cc

@@ -222,10 +222,7 @@ void JSGenericLowering::ReplaceWithRuntimeCall(Node* node,
       linkage()->GetRuntimeCallDescriptor(f, nargs, properties);
   Node* ref = ExternalConstant(ExternalReference(f, isolate()));
   Node* arity = Int32Constant(nargs);
-  if (!centrystub_constant_.is_set()) {
-    centrystub_constant_.set(CodeConstant(CEntryStub(isolate(), 1).GetCode()));
-  }
-  PatchInsertInput(node, 0, centrystub_constant_.get());
+  PatchInsertInput(node, 0, jsgraph()->CEntryStubConstant());
   PatchInsertInput(node, nargs + 1, ref);
   PatchInsertInput(node, nargs + 2, arity);
   PatchOperator(node, common()->Call(desc));

src/compiler/js-generic-lowering.h

@@ -66,7 +66,6 @@ class JSGenericLowering : public Reducer {
   CompilationInfo* info_;
   JSGraph* jsgraph_;
   Linkage* linkage_;
-  SetOncePointer<Node> centrystub_constant_;
 };
 
 }  // namespace compiler