Fix failure in mjsunit/wasm/embenchen/box2d on 32-bit architectures that do not support unaligned a…

Fix failure in mjsunit/wasm/embenchen/box2d on 32-bit architectures that do not support unaligned access.

This test fails because WasmGraphBuilder::BuildCFuncInstruction allocates
space for doubles using StackSlot turbofan operator, but this space is not
guaranteed to be 8 bytes aligned if SP itself is not 8 bytes aligned (which
is the case on 32-bit architectures).

BUG=mjsunit/wasm/embenchen/box2d

Committed: https://crrev.com/d6386efa1baabc3f82182e19b46bb28ad815043e
Cr-Commit-Position: refs/heads/master@{#38039}

[ivica.bogosavljevic, 2016-07-25 11:17:23]

ivica.bogosavljevic@imgtec.com changed reviewers:
+ bmeurer@chromium.org, titzer@chromium.org

[ivica.bogosavljevic, 2016-07-25 11:17:23]

PTAL

[Benedikt Meurer, 2016-07-25 17:51:03]

lgtm

[ivica.bogosavljevic, 2016-07-26 06:54:56]

The CQ bit was checked by ivica.bogosavljevic@imgtec.com

[commit-bot: I haz the power, 2016-07-26 06:55:05]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-07-26 06:57:53]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-07-26 06:57:54]

Try jobs failed on following builders:
  v8_presubmit on master.tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_presubmit/builds/20192)

[ivica.bogosavljevic, 2016-07-26 07:47:34]

ivica.bogosavljevic@imgtec.com changed reviewers:
+ ahaas@chromium.org

[ivica.bogosavljevic, 2016-07-26 07:47:35]

I need a LGTM from the file owner

[titzer, 2016-07-26 08:13:06]

lgtm

[ivica.bogosavljevic, 2016-07-26 08:47:46]

The CQ bit was checked by ivica.bogosavljevic@imgtec.com

[commit-bot: I haz the power, 2016-07-26 08:47:51]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[ivica.bogosavljevic, 2016-07-26 08:48:03]

The CQ bit was checked by ivica.bogosavljevic@imgtec.com

[commit-bot: I haz the power, 2016-07-26 08:48:05]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-07-26 08:49:11]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-26 08:49:40]

Description was changed from

==========
Fix failure in mjsunit/wasm/embenchen/box2d on 32-bit architectures that do not
support unaligned access.

This test fails because WasmGraphBuilder::BuildCFuncInstruction allocates
space for doubles using StackSlot turbofan operator, but this space is not
guaranteed to be 8 bytes aligned if SP itself is not 8 bytes aligned (which
is the case on 32-bit architectures).

BUG=mjsunit/wasm/embenchen/box2d
==========

to

==========
Fix failure in mjsunit/wasm/embenchen/box2d on 32-bit architectures that do not
support unaligned access.

This test fails because WasmGraphBuilder::BuildCFuncInstruction allocates
space for doubles using StackSlot turbofan operator, but this space is not
guaranteed to be 8 bytes aligned if SP itself is not 8 bytes aligned (which
is the case on 32-bit architectures).

BUG=mjsunit/wasm/embenchen/box2d

Committed: https://crrev.com/d6386efa1baabc3f82182e19b46bb28ad815043e
Cr-Commit-Position: refs/heads/master@{#38039}
==========

[commit-bot: I haz the power, 2016-07-26 08:49:41]

Patchset 1 (id:??) landed as
https://crrev.com/d6386efa1baabc3f82182e19b46bb28ad815043e
Cr-Commit-Position: refs/heads/master@{#38039}