Revert of [turbofan] Better representation selection for comparison with Float64.

Revert of [turbofan] Better representation selection for comparison with Float64. (patchset #2 id:20001 of https://codereview.chromium.org/2790833004/ )

Reason for revert:
Doesn't really move the needle, but tanks Kraken/imaging-gaussian-blur (crbug.com/709396), so reverting for now.

Original issue's description:
> [turbofan] Better representation selection for comparison with Float64.
> 
> For speculative number comparisons with SignedSmall feedback, we always
> enforce either TaggedSigned or Word32 comparisons. But this is not
> really beneficial if one of the inputs is already in Float64
> representation; in that case it's cheaper to just convert the other
> input to a Float64.
> 
> R=jarin@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2790833004
> Cr-Commit-Position: refs/heads/master@{#44327}
> Committed: https://chromium.googlesource.com/v8/v8/+/8af394d6d385daf05b73765a2545ac8f266c64c7

TBR=jarin@chromium.org
BUG=chromium:709396
Review-Url: https://codereview.chromium.org/2801233002
Cr-Commit-Position: refs/heads/master@{#44480}
Committed: https://chromium.googlesource.com/v8/v8/+/5e78b32d706470cddabfe776bc4c7c8411e28481

[Benedikt Meurer, 2017-04-07 10:36:45]

The CQ bit was checked by bmeurer@chromium.org

[Benedikt Meurer, 2017-04-07 10:36:45]

Created Revert of [turbofan] Better representation selection for comparison with
Float64.

[commit-bot: I haz the power, 2017-04-07 10:36:47]

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

[Benedikt Meurer, 2017-04-07 10:36:49]

The CQ bit was unchecked by bmeurer@chromium.org

[Benedikt Meurer, 2017-04-07 10:37:08]

Description was changed from

==========
Revert of [turbofan] Better representation selection for comparison with
Float64. (patchset #2 id:20001 of https://codereview.chromium.org/2790833004/ )

Reason for revert:
Doesn't really move the needle, but tanks Kraken/imaging-gaussian-blur
(crbug.com/709396), so reverting for now.

Original issue's description:
> [turbofan] Better representation selection for comparison with Float64.
> 
> For speculative number comparisons with SignedSmall feedback, we always
> enforce either TaggedSigned or Word32 comparisons. But this is not
> really beneficial if one of the inputs is already in Float64
> representation; in that case it's cheaper to just convert the other
> input to a Float64.
> 
> R=jarin@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2790833004
> Cr-Commit-Position: refs/heads/master@{#44327}
> Committed:
https://chromium.googlesource.com/v8/v8/+/8af394d6d385daf05b73765a2545ac8f266...

TBR=jarin@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
==========

to

==========
Revert of [turbofan] Better representation selection for comparison with
Float64. (patchset #2 id:20001 of https://codereview.chromium.org/2790833004/ )

Reason for revert:
Doesn't really move the needle, but tanks Kraken/imaging-gaussian-blur
(crbug.com/709396), so reverting for now.

Original issue's description:
> [turbofan] Better representation selection for comparison with Float64.
> 
> For speculative number comparisons with SignedSmall feedback, we always
> enforce either TaggedSigned or Word32 comparisons. But this is not
> really beneficial if one of the inputs is already in Float64
> representation; in that case it's cheaper to just convert the other
> input to a Float64.
> 
> R=jarin@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2790833004
> Cr-Commit-Position: refs/heads/master@{#44327}
> Committed:
https://chromium.googlesource.com/v8/v8/+/8af394d6d385daf05b73765a2545ac8f266...

TBR=jarin@chromium.org
BUG=chromium:709396
==========

[Benedikt Meurer, 2017-04-07 10:37:11]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2017-04-07 10:37:17]

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, 2017-04-07 11:17:07]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1491561431451350, "parent_rev":
"8dc308d0a868182e9399a75a6d3deac76a031166", "commit_rev":
"5e78b32d706470cddabfe776bc4c7c8411e28481"}

[commit-bot: I haz the power, 2017-04-07 11:17:14]

Description was changed from

==========
Revert of [turbofan] Better representation selection for comparison with
Float64. (patchset #2 id:20001 of https://codereview.chromium.org/2790833004/ )

Reason for revert:
Doesn't really move the needle, but tanks Kraken/imaging-gaussian-blur
(crbug.com/709396), so reverting for now.

Original issue's description:
> [turbofan] Better representation selection for comparison with Float64.
> 
> For speculative number comparisons with SignedSmall feedback, we always
> enforce either TaggedSigned or Word32 comparisons. But this is not
> really beneficial if one of the inputs is already in Float64
> representation; in that case it's cheaper to just convert the other
> input to a Float64.
> 
> R=jarin@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2790833004
> Cr-Commit-Position: refs/heads/master@{#44327}
> Committed:
https://chromium.googlesource.com/v8/v8/+/8af394d6d385daf05b73765a2545ac8f266...

TBR=jarin@chromium.org
BUG=chromium:709396
==========

to

==========
Revert of [turbofan] Better representation selection for comparison with
Float64. (patchset #2 id:20001 of https://codereview.chromium.org/2790833004/ )

Reason for revert:
Doesn't really move the needle, but tanks Kraken/imaging-gaussian-blur
(crbug.com/709396), so reverting for now.

Original issue's description:
> [turbofan] Better representation selection for comparison with Float64.
> 
> For speculative number comparisons with SignedSmall feedback, we always
> enforce either TaggedSigned or Word32 comparisons. But this is not
> really beneficial if one of the inputs is already in Float64
> representation; in that case it's cheaper to just convert the other
> input to a Float64.
> 
> R=jarin@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2790833004
> Cr-Commit-Position: refs/heads/master@{#44327}
> Committed:
https://chromium.googlesource.com/v8/v8/+/8af394d6d385daf05b73765a2545ac8f266...

TBR=jarin@chromium.org
BUG=chromium:709396

Review-Url: https://codereview.chromium.org/2801233002
Cr-Commit-Position: refs/heads/master@{#44480}
Committed:
https://chromium.googlesource.com/v8/v8/+/5e78b32d706470cddabfe776bc4c7c8411e...
==========

[commit-bot: I haz the power, 2017-04-07 11:17:15]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/5e78b32d706470cddabfe776bc4c7c8411e...