Fix 64-bit VS2010 build

src/compiler/schedule.h

 // Copyright 2013 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.
 
 #ifndef V8_COMPILER_SCHEDULE_H_
 #define V8_COMPILER_SCHEDULE_H_
 
 #include <vector>
 
 #include "src/v8.h"
@@ skipping 176 matching lines @@
 
   bool IsScheduled(Node* node) {
     int length = static_cast<int>(nodeid_to_block_.size());
     if (node->id() >= length) return false;
     return nodeid_to_block_[node->id()] != NULL;
   }
 
   BasicBlock* GetBlockById(int block_id) { return all_blocks_[block_id]; }
 
   int BasicBlockCount() const { return NodeCount(); }
-  int RpoBlockCount() const { return rpo_order_.size(); }
+  int RpoBlockCount() const { return static_cast<int>(rpo_order_.size()); }
 
   typedef ContainerPointerWrapper<BasicBlockVector> BasicBlocks;
 
   // Return a list of all the blocks in the schedule, in arbitrary order.
   BasicBlocks all_blocks() { return BasicBlocks(&all_blocks_); }
 
   // Check if nodes {a} and {b} are in the same block.
   inline bool SameBasicBlock(Node* a, Node* b) const {
     BasicBlock* block = this->block(a);
     return block != NULL && block == this->block(b);
@@ skipping 118 matching lines @@
                                           // dominator, indexed by block
                                           // id.
 };
 
 OStream& operator<<(OStream& os, const Schedule& s);
 }
 }
 }  // namespace v8::internal::compiler
 
 #endif  // V8_COMPILER_SCHEDULE_H_