Fix typed lowering of JSUnaryNot to work with graph reducer.

src/compiler/js-typed-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/compiler/access-builder.h"
 #include "src/compiler/graph-inl.h"
 #include "src/compiler/js-typed-lowering.h"
 #include "src/compiler/node-aux-data-inl.h"
 #include "src/compiler/node-properties-inl.h"
 #include "src/types.h"
@@ skipping 569 matching lines @@
     case IrOpcode::kJSMultiply:
       return ReduceNumberBinop(node, simplified()->NumberMultiply());
     case IrOpcode::kJSDivide:
       return ReduceNumberBinop(node, simplified()->NumberDivide());
     case IrOpcode::kJSModulus:
       return ReduceNumberBinop(node, simplified()->NumberModulus());
     case IrOpcode::kJSUnaryNot: {
       Reduction result = ReduceJSToBooleanInput(node->InputAt(0));
       Node* value;
       if (result.Changed()) {
-        // !x => BooleanNot(x)
+        // JSUnaryNot(x) => BooleanNot(x)
         value =
             graph()->NewNode(simplified()->BooleanNot(), result.replacement());
         NodeProperties::ReplaceWithValue(node, value);
         return Changed(value);
       } else {
-        // !x => BooleanNot(JSToBoolean(x))
+        // JSUnaryNot(x) => BooleanNot(JSToBoolean(x))
         value = graph()->NewNode(simplified()->BooleanNot(), node);
         node->set_op(javascript()->ToBoolean());
         NodeProperties::ReplaceWithValue(node, value, node);
         // Note: ReplaceUses() smashes all uses, so smash it back here.
         value->ReplaceInput(0, node);
-        return ReplaceWith(value);
+        return Changed(node);
       }
     }
     case IrOpcode::kJSToBoolean:
       return ReplaceWithReduction(node,
                                   ReduceJSToBooleanInput(node->InputAt(0)));
     case IrOpcode::kJSToNumber:
       return ReplaceWithReduction(node,
                                   ReduceJSToNumberInput(node->InputAt(0)));
     case IrOpcode::kJSToString:
       return ReplaceWithReduction(node,
                                   ReduceJSToStringInput(node->InputAt(0)));
     case IrOpcode::kJSLoadProperty:
       return ReduceJSPropertyLoad(node);
     default:
       break;
   }
   return NoChange();
 }
 }
 }
 }  // namespace v8::internal::compiler