[turbofan] Consume number type hints for strict equality.

src/compiler/js-generic-lowering.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/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/compiler/common-operator.h"
 #include "src/compiler/js-generic-lowering.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/machine-operator.h"
@@ skipping 102 matching lines @@
   Node* ref = jsgraph()->ExternalConstant(ExternalReference(f, isolate()));
   Node* arity = jsgraph()->Int32Constant(nargs);
   node->InsertInput(zone(), 0, jsgraph()->CEntryStubConstant(fun->result_size));
   node->InsertInput(zone(), nargs + 1, ref);
   node->InsertInput(zone(), nargs + 2, arity);
   NodeProperties::ChangeOp(node, common()->Call(desc));
 }
 
 void JSGenericLowering::LowerJSStrictEqual(Node* node) {
   Callable callable = CodeFactory::StrictEqual(isolate());
-  node->AppendInput(zone(), graph()->start());
+  node->RemoveInput(4);  // control
   ReplaceWithStubCall(node, callable, CallDescriptor::kNoFlags,
                       Operator::kEliminatable);
 }
 
 void JSGenericLowering::LowerJSStrictNotEqual(Node* node) {
   Callable callable = CodeFactory::StrictNotEqual(isolate());
-  node->AppendInput(zone(), graph()->start());
+  node->RemoveInput(4);  // control
   ReplaceWithStubCall(node, callable, CallDescriptor::kNoFlags,
                       Operator::kEliminatable);
 }
 
 void JSGenericLowering::LowerJSToBoolean(Node* node) {
   Callable callable = CodeFactory::ToBoolean(isolate());
   node->AppendInput(zone(), graph()->start());
   ReplaceWithStubCall(node, callable, CallDescriptor::kNoAllocate,
                       Operator::kEliminatable);
 }
@@ skipping 543 matching lines @@
 }
 
 
 MachineOperatorBuilder* JSGenericLowering::machine() const {
   return jsgraph()->machine();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8