Fix typed lowering of JSToBoolean on number inputs.

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 473 matching lines @@
   }
   if (input_type->Is(Type::Undetectable())) {
     // JSToBoolean(undetectable) => #false
     return ReplaceWith(jsgraph()->FalseConstant());
   }
   if (input_type->Is(Type::Number())) {
     // JSToBoolean(number) => BooleanNot(NumberEqual(x, #0))
     Node* cmp = graph()->NewNode(simplified()->NumberEqual(), input,
                                  jsgraph()->ZeroConstant());
     Node* inv = graph()->NewNode(simplified()->BooleanNot(), cmp);
-    ReplaceEagerly(input, inv);
-    // TODO(titzer): Ugly. ReplaceEagerly smashes all uses. Smash it back here.
-    cmp->ReplaceInput(0, input);
-    return Changed(inv);
+    return ReplaceWith(inv);
   }
   // TODO(turbofan): js-typed-lowering of ToBoolean(string)
   return NoChange();
 }
 
 
 Reduction JSTypedLowering::ReduceJSPropertyLoad(Node* node) {
   Node* key = NodeProperties::GetValueInput(node, 1);
   Node* base = NodeProperties::GetValueInput(node, 0);
   Type* key_type = NodeProperties::GetBounds(key).upper;
@@ skipping 107 matching lines @@
     case IrOpcode::kJSLoadProperty:
       return ReduceJSPropertyLoad(node);
     default:
       break;
   }
   return NoChange();
 }
 }
 }
 }  // namespace v8::internal::compiler