X64: Change testl to testb if mask fits in 1 byte.  Shortens smi test. Review URL: http://codereview.chromium.org/164472
X64: Change testl to testb if mask fits in 1 byte.  Shortens smi test.
Review URL: http://codereview.chromium.org/164472

git-svn-id: b158db1e4b4ab85d4c9e510fdef4b1e8c614b15b@2680 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh