From ec2b5ab57c0c2961138e3c491b166676ce26470c Mon Sep 17 00:00:00 2001
From: "verwaest@chromium.org"
 <verwaest@chromium.org@ce2b1a6d-e550-0410-aec6-3dcde31c8c00>
Date: Tue, 31 Jul 2012 12:33:28 +0000
Subject: [PATCH] Use architecture-specific alignment for hashing in Descriptor
 lookup cache.

Review URL: https://chromiumcodereview.appspot.com/10825099

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12236 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
---
 src/heap.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/heap.h b/src/heap.h
index 918e25e..8d40bd9 100644
--- a/src/heap.h
+++ b/src/heap.h
@@ -2395,9 +2395,11 @@ class DescriptorLookupCache {
   static int Hash(DescriptorArray* array, String* name) {
     // Uses only lower 32 bits if pointers are larger.
     uint32_t array_hash =
-        static_cast<uint32_t>(reinterpret_cast<uintptr_t>(array)) >> 2;
+        static_cast<uint32_t>(reinterpret_cast<uintptr_t>(array))
+            >> kPointerSizeLog2;
     uint32_t name_hash =
-        static_cast<uint32_t>(reinterpret_cast<uintptr_t>(name)) >> 2;
+        static_cast<uint32_t>(reinterpret_cast<uintptr_t>(name))
+            >> kPointerSizeLog2;
     return (array_hash ^ name_hash) % kLength;
   }
 
-- 
2.7.4