Import Reversed adapter from Chromium and use it in v8.

src/compiler/register-allocator.cc

Index: src/compiler/register-allocator.cc
diff --git a/src/compiler/register-allocator.cc b/src/compiler/register-allocator.cc
index 9d745d0097f4e627707a0349f006c6073db7592d..0162640d572b27a7d6c62b294538bda0a41d276a 100644
--- a/src/compiler/register-allocator.cc
+++ b/src/compiler/register-allocator.cc
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "src/base/adapters.h"
 #include "src/compiler/linkage.h"
 #include "src/compiler/register-allocator.h"
 #include "src/string-stream.h"
@@ -1411,9 +1412,8 @@ void RegisterAllocator::MeetRegisterConstraints() {
 
 void RegisterAllocator::ResolvePhis() {
   // Process the blocks in reverse order.
-  for (auto i = code()->instruction_blocks().rbegin();
-       i != code()->instruction_blocks().rend(); ++i) {
-    ResolvePhis(*i);
+  for (auto i : base::Reversed(code()->instruction_blocks())) {

[Michael Starzinger, 2015/04/20 13:11:14]

nit: s/auto i/Node* node/

[Sven Panne, 2015/04/20 14:38:35]

I guess you mean "Instruction* block" here. :-) Done.

+    ResolvePhis(i);
   }
 }