[turbofan] Fully reduce node in JSCallReducer::ReduceSpreadCall.

src/compiler/js-call-reducer.cc

 // Copyright 2015 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/compiler/js-call-reducer.h"
 
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/compilation-dependencies.h"
 #include "src/compiler/js-graph.h"
@@ skipping 488 matching lines @@
   Node* const parameters = frame_state->InputAt(kFrameStateParametersInput);
   for (int i = start_index + 1; i < state_info.parameter_count(); ++i) {
     node->InsertInput(graph()->zone(), static_cast<int>(++arity),
                       parameters->InputAt(i));
   }
 
   // TODO(turbofan): Collect call counts on spread call/construct and thread it
   // through here.
   if (node->opcode() == IrOpcode::kJSCallWithSpread) {
     NodeProperties::ChangeOp(node, javascript()->Call(arity + 1));
+    Reduction const r = ReduceJSCall(node);
+    return r.Changed() ? r : Changed(node);
   } else {
     NodeProperties::ChangeOp(node, javascript()->Construct(arity + 2));
+    Reduction const r = ReduceJSConstruct(node);
+    return r.Changed() ? r : Changed(node);
   }
-  return Changed(node);
 }
 
 namespace {
 
 bool ShouldUseCallICFeedback(Node* node) {
   HeapObjectMatcher m(node);
   if (m.HasValue() || m.IsJSCreateClosure()) {
     // Don't use CallIC feedback when we know the function
     // being called, i.e. either know the closure itself or
     // at least the SharedFunctionInfo.
@@ skipping 335 matching lines @@
   return jsgraph()->javascript();
 }
 
 SimplifiedOperatorBuilder* JSCallReducer::simplified() const {
   return jsgraph()->simplified();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8