[turbofan] ARM: Use SBFX in instruction selector.

[turbofan] ARM: Use SBFX in instruction selector.

Support SBFX in the instruction selector for sign-extension patterns like
Sar(Shl(x, a), b), where a and b are immediate values.

BUG=

Committed: https://crrev.com/14a5c18cc35b2c55b37de3bd0ad27941cf21cb68
Cr-Commit-Position: refs/heads/master@{#34029}

[martyn.capewell, 2016-02-15 14:41:56]

Description was changed from

==========
[turbofan] ARM: Use SBFX in instruction selector.

Support SBFX in the instruction selector for sign-extension patterns like
Sar(Shl(x, a), b), where a and b are immediate values.

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

to

==========
[turbofan] ARM: Use SBFX in instruction selector.

Support SBFX in the instruction selector for sign-extension patterns like
Sar(Shl(x, a), b), where a and b are immediate values.

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

[martyn.capewell, 2016-02-15 14:41:56]

martyn.capewell@arm.com changed reviewers:
+ bmeurer@chromium.org, danno@chromium.org, jarin@chromium.org

[Benedikt Meurer, 2016-02-16 05:08:52]

Nice. LGTM.

[martyn.capewell, 2016-02-16 10:59:25]

The CQ bit was checked by martyn.capewell@arm.com

[commit-bot: I haz the power, 2016-02-16 10:59:36]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1695293002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1695293002/1

[commit-bot: I haz the power, 2016-02-16 11:29:36]

Description was changed from

==========
[turbofan] ARM: Use SBFX in instruction selector.

Support SBFX in the instruction selector for sign-extension patterns like
Sar(Shl(x, a), b), where a and b are immediate values.

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

to

==========
[turbofan] ARM: Use SBFX in instruction selector.

Support SBFX in the instruction selector for sign-extension patterns like
Sar(Shl(x, a), b), where a and b are immediate values.

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

[commit-bot: I haz the power, 2016-02-16 11:29:37]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-02-16 11:29:52]

Description was changed from

==========
[turbofan] ARM: Use SBFX in instruction selector.

Support SBFX in the instruction selector for sign-extension patterns like
Sar(Shl(x, a), b), where a and b are immediate values.

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

to

==========
[turbofan] ARM: Use SBFX in instruction selector.

Support SBFX in the instruction selector for sign-extension patterns like
Sar(Shl(x, a), b), where a and b are immediate values.

BUG=

Committed: https://crrev.com/14a5c18cc35b2c55b37de3bd0ad27941cf21cb68
Cr-Commit-Position: refs/heads/master@{#34029}
==========

[commit-bot: I haz the power, 2016-02-16 11:29:53]

Patchset 1 (id:??) landed as
https://crrev.com/14a5c18cc35b2c55b37de3bd0ad27941cf21cb68
Cr-Commit-Position: refs/heads/master@{#34029}