[turbofan] Desugar JSUnaryNot(x) to Select(x, false, true).

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 218 matching lines @@
       zone(), f, nargs, properties, CallDescriptor::kNeedsFrameState);
   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::LowerJSUnaryNot(Node* node) {
-  CallDescriptor::Flags flags = AdjustFrameStatesForCall(node);
-  Callable callable = CodeFactory::ToBoolean(
-      isolate(), ToBooleanStub::RESULT_AS_INVERSE_ODDBALL);
-  ReplaceWithStubCall(node, callable,
-                      CallDescriptor::kPatchableCallSite | flags);
-}
-
-
 void JSGenericLowering::LowerJSTypeOf(Node* node) {
   CallDescriptor::Flags flags = AdjustFrameStatesForCall(node);
   Callable callable = CodeFactory::Typeof(isolate());
   ReplaceWithStubCall(node, callable, flags);
 }
 
 
 void JSGenericLowering::LowerJSToBoolean(Node* node) {
   CallDescriptor::Flags flags = AdjustFrameStatesForCall(node);
-  Callable callable =
-      CodeFactory::ToBoolean(isolate(), ToBooleanStub::RESULT_AS_ODDBALL);
+  Callable callable = CodeFactory::ToBoolean(isolate());
   ReplaceWithStubCall(node, callable,
                       CallDescriptor::kPatchableCallSite | flags);
 }
 
 
 void JSGenericLowering::LowerJSToNumber(Node* node) {
   CallDescriptor::Flags flags = AdjustFrameStatesForCall(node);
   Callable callable = CodeFactory::ToNumber(isolate());
   ReplaceWithStubCall(node, callable, flags);
 }
@@ skipping 624 matching lines @@
 }
 
 
 MachineOperatorBuilder* JSGenericLowering::machine() const {
   return jsgraph()->machine();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8