X87: [turbofan] Take the immediate size in account when narrowing ia32/x64 word comparison operator…

X87: [turbofan] Take the immediate size in account when narrowing ia32/x64 word comparison operators.

  port a0543313dbd46b0c2e72c91ee3488a7dc6db73e4 (r36009)

  original commit message:
  Before this patch, we would emit a cmp or test with a memory operand only if both of the operands in the IR were loads.
  Now if either of them is a load and the other one is an immediate, we can use a memory operand if the load representation machine size is wide enough to represent the latter.

BUG=

Committed: https://crrev.com/f68562ee0beac21812ec035cc0d5fc6e68e06b35
Cr-Commit-Position: refs/heads/master@{#36057}

[zhengxing.li, 2016-05-06 02:13:27]

zhengxing.li@intel.com changed reviewers:
+ chunyang.dai@intel.com, epertoso@chromium.org, weiliang.lin@intel.com

[zhengxing.li, 2016-05-06 02:13:27]

PTAL, thanks!

[Weiliang, 2016-05-06 02:18:49]

lgtm

[zhengxing.li, 2016-05-06 02:39:49]

The CQ bit was checked by zhengxing.li@intel.com

[commit-bot: I haz the power, 2016-05-06 02:39:56]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1954963002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1954963002/1

[commit-bot: I haz the power, 2016-05-06 07:27:29]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-06 07:28:50]

Description was changed from

==========
X87: [turbofan] Take the immediate size in account when narrowing ia32/x64 word
comparison operators.

  port a0543313dbd46b0c2e72c91ee3488a7dc6db73e4 (r36009)

  original commit message:
  Before this patch, we would emit a cmp or test with a memory operand only if
both of the operands in the IR were loads.
  Now if either of them is a load and the other one is an immediate, we can use
a memory operand if the load representation machine size is wide enough to
represent the latter.

BUG=
==========

to

==========
X87: [turbofan] Take the immediate size in account when narrowing ia32/x64 word
comparison operators.

  port a0543313dbd46b0c2e72c91ee3488a7dc6db73e4 (r36009)

  original commit message:
  Before this patch, we would emit a cmp or test with a memory operand only if
both of the operands in the IR were loads.
  Now if either of them is a load and the other one is an immediate, we can use
a memory operand if the load representation machine size is wide enough to
represent the latter.

BUG=

Committed: https://crrev.com/f68562ee0beac21812ec035cc0d5fc6e68e06b35
Cr-Commit-Position: refs/heads/master@{#36057}
==========

[commit-bot: I haz the power, 2016-05-06 07:28:51]

Patchset 1 (id:??) landed as
https://crrev.com/f68562ee0beac21812ec035cc0d5fc6e68e06b35
Cr-Commit-Position: refs/heads/master@{#36057}