Fix bugs in simplified lowering relating to int32/uint32 signs.

test/cctest/compiler/test-js-constant-cache.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/v8.h"
 
 #include "src/assembler.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/node-properties-inl.h"
 #include "src/compiler/typer.h"
 #include "src/types.h"
 #include "test/cctest/cctest.h"
 #include "test/cctest/compiler/value-helper.h"
 
 using namespace v8::internal;
 using namespace v8::internal::compiler;
 
 class JSCacheTesterHelper {
  protected:
   explicit JSCacheTesterHelper(Zone* zone)
       : main_graph_(zone),
         main_common_(zone),
         main_javascript_(zone),
         main_typer_(&main_graph_, MaybeHandle<Context>()),
-        main_machine_() {}
+        main_machine_(zone) {}
   Graph main_graph_;
   CommonOperatorBuilder main_common_;
   JSOperatorBuilder main_javascript_;
   Typer main_typer_;
   MachineOperatorBuilder main_machine_;
 };
 
 
 // TODO(dcarney): JSConstantCacheTester inherits from JSGraph???
 class JSConstantCacheTester : public HandleAndZoneScope,
@@ skipping 429 matching lines @@
       T.Constant(1.11),
       T.ExternalConstant(ExternalReference::address_of_one_half())};
 
   NodeVector nodes(T.main_zone());
   T.GetCachedNodes(&nodes);
 
   for (size_t i = 0; i < arraysize(constants); i++) {
     CHECK(Contains(&nodes, constants[i]));
   }
 }