[turbofan] Properly rename receiver on CheckHeapObject.

[turbofan] Properly rename receiver on CheckHeapObject.

We need to rename the receiver on CheckHeapObject, because we
don't canonicalize numbers in SignedSmall range, and thus we
the representation selection can hand out TaggedSigned values
for receiver uses, even though we checked for TaggedPointerness
first.

Note that this is rather hacky and just intended to fix the bug
ASAP. We need to think about how to deal with representations in
earlier compilation stages.

BUG=chromium:662410
R=jarin@chromium.org

Committed: https://crrev.com/a758c19761ce6722836363ab9a5ed4437897197c
Cr-Commit-Position: refs/heads/master@{#40792}

[Benedikt Meurer, 2016-11-07 08:17:03]

The CQ bit was checked by bmeurer@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-11-07 08:17:07]

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

[Jarin, 2016-11-07 08:21:30]

lgtm

[Benedikt Meurer, 2016-11-07 08:22:01]

The CQ bit was unchecked by bmeurer@chromium.org

[Benedikt Meurer, 2016-11-07 08:22:12]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2016-11-07 08:22:17]

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, 2016-11-07 08:41:14]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-11-17 22:24:10]

Description was changed from

==========
[turbofan] Properly rename receiver on CheckHeapObject.

We need to rename the receiver on CheckHeapObject, because we
don't canonicalize numbers in SignedSmall range, and thus we
the representation selection can hand out TaggedSigned values
for receiver uses, even though we checked for TaggedPointerness
first.

Note that this is rather hacky and just intended to fix the bug
ASAP. We need to think about how to deal with representations in
earlier compilation stages.

BUG=chromium:662410
R=jarin@chromium.org
==========

to

==========
[turbofan] Properly rename receiver on CheckHeapObject.

We need to rename the receiver on CheckHeapObject, because we
don't canonicalize numbers in SignedSmall range, and thus we
the representation selection can hand out TaggedSigned values
for receiver uses, even though we checked for TaggedPointerness
first.

Note that this is rather hacky and just intended to fix the bug
ASAP. We need to think about how to deal with representations in
earlier compilation stages.

BUG=chromium:662410
R=jarin@chromium.org

Committed: https://crrev.com/a758c19761ce6722836363ab9a5ed4437897197c
Cr-Commit-Position: refs/heads/master@{#40792}
==========

[commit-bot: I haz the power, 2016-11-17 22:24:12]

Patchset 1 (id:??) landed as
https://crrev.com/a758c19761ce6722836363ab9a5ed4437897197c
Cr-Commit-Position: refs/heads/master@{#40792}