tree e90bc6971cea788e2dc11b32f81775447ac0f543
parent d3f3dcefb055656807e8a2f65a322bbb13cd05a4
author Johann <johannkoenig@google.com> 1423166560 -0800
committer Johann <johannkoenig@google.com> 1423166560 -0800

Cherry-pick potential divide-by-zero fix

This is a bit more than a potential fix now. It's been in canary for a
week and was recently promoted to dev. No further instances of the issue
have shown up in the crash tracker.

https://codereview.chromium.org/877783004

Replace divide with look-up

This commit replaces an integer divide with a table-lookup. It is to
improve decoding speed, and at the same time, to reduce possible
complications with a bug in AMD Family 12h processors:

"665 Integer Divide Instruction May Cause Unpredictable Behavior"

R=yaowu@chromium.org
BUG=396572

Review URL: https://codereview.chromium.org//896343003