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

src/compiler/basic-block-instrumentor.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/basic-block-instrumentor.h"
 
 #include <sstream>
 
 #include "src/compiler/common-operator.h"
 #include "src/compiler/graph.h"
@@ skipping 51 matching lines @@
   // Capture the schedule string before instrumentation.
   {
     std::ostringstream os;
     os << *schedule;
     data->SetSchedule(&os);
   }
   // Add the increment instructions to the start of every block.
   CommonOperatorBuilder common(graph->zone());
   Node* zero = graph->NewNode(common.Int32Constant(0));
   Node* one = graph->NewNode(common.Int32Constant(1));
-  MachineOperatorBuilder machine;
+  MachineOperatorBuilder machine(graph->zone());
   BasicBlockVector* blocks = schedule->rpo_order();
   size_t block_number = 0;
   for (BasicBlockVector::iterator it = blocks->begin(); block_number < n_blocks;
        ++it, ++block_number) {
     BasicBlock* block = (*it);
     data->SetBlockId(block_number, block->id().ToSize());
     // TODO(dcarney): wire effect and control deps for load and store.
     // Construct increment operation.
     Node* base = graph->NewNode(
         PointerConstant(&common, data->GetCounterAddress(block_number)));
@@ skipping 13 matching lines @@
     for (int i = insertion_start; i < kArraySize; ++i) {
       schedule->SetBlockForNode(block, to_insert[i]);
     }
   }
   return data;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8