Added a workaround for undefined behavior.

src/compiler/instruction.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/common-operator.h"
 #include "src/compiler/graph.h"
 #include "src/compiler/instruction.h"
 #include "src/compiler/schedule.h"
 
 namespace v8 {
@@ skipping 319 matching lines @@
   if (instr.InputCount() > 0) {
     for (size_t i = 0; i < instr.InputCount(); i++) {
       printable_op.op_ = instr.InputAt(i);
       os << " " << printable_op;
     }
   }
   return os;
 }
 
 
+Constant::Constant(int32_t v) : type_(kInt32), value_(v) {}
+
+
 std::ostream& operator<<(std::ostream& os, const Constant& constant) {
   switch (constant.type()) {
     case Constant::kInt32:
       return os << constant.ToInt32();
     case Constant::kInt64:
       return os << constant.ToInt64() << "l";
     case Constant::kFloat32:
       return os << constant.ToFloat32() << "f";
     case Constant::kFloat64:
       return os << constant.ToFloat64();
@@ skipping 377 matching lines @@
       os << " B" << succ.ToInt();
     }
     os << "\n";
   }
   return os;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8