[turbofan] Remove use of CallFunctionStub from TurboFan.

src/compiler/js-generic-lowering.cc

Index: src/compiler/js-generic-lowering.cc
diff --git a/src/compiler/js-generic-lowering.cc b/src/compiler/js-generic-lowering.cc
index 7af86889bf946a9a6e8c6a29f367d81b0cf63848..7b75f0f4916360d3d8a023ba5edf379610e64419 100644
--- a/src/compiler/js-generic-lowering.cc
+++ b/src/compiler/js-generic-lowering.cc
@@ -520,6 +520,7 @@ void JSGenericLowering::LowerJSCreateScriptContext(Node* node) {
 
 
 void JSGenericLowering::LowerJSCallConstruct(Node* node) {
+  // TODO(bmeurer): Use the Construct builtin here.
   int arity = OpParameter<int>(node);
   CallConstructStub stub(isolate(), SUPER_CONSTRUCTOR_CALL);
   CallInterfaceDescriptor d = stub.GetCallInterfaceDescriptor();
@@ -540,18 +541,19 @@ void JSGenericLowering::LowerJSCallConstruct(Node* node) {
 
 
 void JSGenericLowering::LowerJSCallFunction(Node* node) {
-  const CallFunctionParameters& p = CallFunctionParametersOf(node->op());
-  int arg_count = static_cast<int>(p.arity() - 2);
-  CallFunctionStub stub(isolate(), arg_count, p.flags());
-  CallInterfaceDescriptor d = stub.GetCallInterfaceDescriptor();
+  CallFunctionParameters const& p = CallFunctionParametersOf(node->op());
+  int const arg_count = static_cast<int>(p.arity() - 2);
+  Callable callable = CodeFactory::Call(isolate());
   CallDescriptor::Flags flags = AdjustFrameStatesForCall(node);
-  if (p.AllowTailCalls()) {
+  if (p.tail_call_mode() == TailCallMode::kAllow) {
     flags |= CallDescriptor::kSupportsTailCalls;
   }
   CallDescriptor* desc = Linkage::GetStubCallDescriptor(
-      isolate(), zone(), d, static_cast<int>(p.arity() - 1), flags);
-  Node* stub_code = jsgraph()->HeapConstant(stub.GetCode());
+      isolate(), zone(), callable.descriptor(), arg_count + 1, flags);
+  Node* stub_code = jsgraph()->HeapConstant(callable.code());
+  Node* stub_arity = jsgraph()->Int32Constant(arg_count);
   node->InsertInput(zone(), 0, stub_code);
+  node->InsertInput(zone(), 2, stub_arity);
   NodeProperties::ChangeOp(node, common()->Call(desc));
 }