Fix 64-bit VS2010 build

src/compiler/ast-graph-builder.h

 // 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.
 
 #ifndef V8_COMPILER_AST_GRAPH_BUILDER_H_
 #define V8_COMPILER_AST_GRAPH_BUILDER_H_
 
 #include "src/v8.h"
 
 #include "src/ast.h"
@@ skipping 178 matching lines @@
 //
 class AstGraphBuilder::Environment
     : public StructuredGraphBuilder::Environment {
  public:
   Environment(AstGraphBuilder* builder, Scope* scope, Node* control_dependency);
   Environment(const Environment& copy);
 
   int parameters_count() const { return parameters_count_; }
   int locals_count() const { return locals_count_; }
   int stack_height() {
-    return values()->size() - parameters_count_ - locals_count_;
+    return static_cast<int>(values()->size()) - parameters_count_ -
+           locals_count_;
   }
 
   // Operations on parameter or local variables. The parameter indices are
   // shifted by 1 (receiver is parameter index -1 but environment index 0).
   void Bind(Variable* variable, Node* node) {
     ASSERT(variable->IsStackAllocated());
     if (variable->IsParameter()) {
       values()->at(variable->index() + 1) = node;
       parameters_dirty_ = true;
     } else {
@@ skipping 24 matching lines @@
   Node* Pop() {
     ASSERT(stack_height() > 0);
     Node* back = values()->back();
     values()->pop_back();
     return back;
   }
 
   // Direct mutations of the operand stack.
   void Poke(int depth, Node* node) {
     ASSERT(depth >= 0 && depth < stack_height());
-    int index = values()->size() - depth - 1;
+    int index = static_cast<int>(values()->size()) - depth - 1;
     values()->at(index) = node;
   }
   Node* Peek(int depth) {
     ASSERT(depth >= 0 && depth < stack_height());
-    int index = values()->size() - depth - 1;
+    int index = static_cast<int>(values()->size()) - depth - 1;
     return values()->at(index);
   }
   void Drop(int depth) {
     ASSERT(depth >= 0 && depth <= stack_height());
     values()->erase(values()->end() - depth, values()->end());
   }
 
   // Preserve a checkpoint of the environment for the IR graph. Any
   // further mutation of the environment will not affect checkpoints.
   Node* Checkpoint(BailoutId ast_id);
@@ skipping 148 matching lines @@
 };
 
 Scope* AstGraphBuilder::current_scope() const {
   return execution_context_->scope();
 }
 }
 }
 }  // namespace v8::internal::compiler
 
 #endif  // V8_COMPILER_AST_GRAPH_BUILDER_H_