Suppress massive prefetching of unaddressable memory in v8::internal::OS::MemCopy

BUG=233500
TBR=oshima

Review URL: https://codereview.chromium.org/14267016

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@195094 0039d316-1c4b-4281-b951-d872f2087c98

tools/valgrind/drmemory/suppressions.txt

@@ -125,6 +125,11 @@ instruction=prefetch*
 ffmpegsumo.dll!ff_prefetch_mmxext
 ffmpegsumo.dll!vp8_decode_mb_row_no_filter
 
+WARNING
+name=http://crbug.com/233500 - prefetches in v8::internal::OS::MemCopy
+instruction=prefetch*
+v8.dll!v8::internal::OS::MemCopy
+
 ############################
 # Intentional errors in Chromium tests (ToolsSanityTests)
 LEAK