x86 validator: Implement rewriting "movntq" to "movq" on x86-64

x86 validator: Implement rewriting "movntq" to "movq" on x86-64

We were already doing this rewrite for x86-32.

We had previously checked the Web Store to find all the non-temporal
instructions that we need to handle and rewrite, but it looks like we
missed at least one -- "movntq" is being used.  The use might have
appeared after we did the check.

BUG= https://bugs.chromium.org/p/chromium/issues/detail?id=598085
TEST=run_validation_rewrite_test run_rewrite_nontemporals_test run_validation_cache_test

Committed: https://chromium.googlesource.com/native_client/src/native_client/+/fb2c685d12b5a13cdb5b284b0ee1ee3c2080a769

[Mark Seaborn, 2016-03-25 22:34:01]

Description was changed from

==========
x86 validator: Rewrite "movntq" to "movq" on x86-64
==========

to

==========
x86 validator: Implement rewriting "movntq" to "movq" on x86-64

We were already doing this rewrite for x86-32.

We had previously checked the Web Store to find all the non-temporal
instructions that we need to handle and rewrite, but it looks like we
missed at least one -- "movntq" is being used.  The use might have
appeared after we did the check.

BUG= https://bugs.chromium.org/p/chromium/issues/detail?id=598085
TEST=run_validation_rewrite_test run_rewrite_nontemporals_test
run_validation_cache_test
==========

[Mark Seaborn, 2016-03-25 22:34:02]

mseaborn@chromium.org changed reviewers:
+ phosek@chromium.org

[Petr Hosek, 2016-03-25 22:37:46]

lgtm

[Mark Seaborn, 2016-03-25 22:41:33]

The CQ bit was checked by mseaborn@chromium.org

[commit-bot: I haz the power, 2016-03-25 22:41:45]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1836633002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1836633002/1

[commit-bot: I haz the power, 2016-03-25 23:09:07]

Description was changed from

==========
x86 validator: Implement rewriting "movntq" to "movq" on x86-64

We were already doing this rewrite for x86-32.

We had previously checked the Web Store to find all the non-temporal
instructions that we need to handle and rewrite, but it looks like we
missed at least one -- "movntq" is being used.  The use might have
appeared after we did the check.

BUG= https://bugs.chromium.org/p/chromium/issues/detail?id=598085
TEST=run_validation_rewrite_test run_rewrite_nontemporals_test
run_validation_cache_test
==========

to

==========
x86 validator: Implement rewriting "movntq" to "movq" on x86-64

We were already doing this rewrite for x86-32.

We had previously checked the Web Store to find all the non-temporal
instructions that we need to handle and rewrite, but it looks like we
missed at least one -- "movntq" is being used.  The use might have
appeared after we did the check.

BUG= https://bugs.chromium.org/p/chromium/issues/detail?id=598085
TEST=run_validation_rewrite_test run_rewrite_nontemporals_test
run_validation_cache_test

Committed:
https://chromium.googlesource.com/native_client/src/native_client/+/fb2c685d1...
==========

[commit-bot: I haz the power, 2016-03-25 23:09:07]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/native_client/src/native_client/+/fb2c685d1...