tree abcab0dd3656199d96685872175a15ed906aaf83
parent d99324dd4cae479f4d12f82a4ea3ed4ad4a8ecec
author Frank Barchard <fbarchard@google.com> 1445383441 -0700
committer Frank Barchard <fbarchard@google.com> 1445383441 -0700

write to cpu_flags once

To make init cpu flags thread safe, there can only be one write to the variable.

R=richard.winterton@intel.com, harryjin@google.com
BUG=libyuv:508

Review URL: https://codereview.chromium.org/1412793006 .