Revert of [wasm]implement simd lowering for f32x4->i32x4, i32x4 min/max and shift instructions

Revert of [wasm]implement simd lowering for f32x4->i32x4, i32x4 min/max and shift instructions (patchset #2 id:20001 of https://codereview.chromium.org/2718323003/ )

Reason for revert:
breaks nosse4:
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20debug/builds/13871

Original issue's description:
> [wasm]implement simd lowering for f32x4->i32x4, i32x4 min/max and shift instructions
> 
> BUG=v8:4124
> R=bradnelson@chromium.org,bbudge@chromium.org,gdeepti@chromium.org,mtrofin@chromium.org,titzer@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2718323003
> Cr-Commit-Position: refs/heads/master@{#43510}
> Committed: https://chromium.googlesource.com/v8/v8/+/f75748cf4ca696fff268787068419604815f8090

TBR=bbudge@chromium.org,bradnelson@chromium.org,gdeepti@chromium.org,mtrofin@chromium.org,titzer@chromium.org,aseemgarg@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4124
Review-Url: https://codereview.chromium.org/2723943003
Cr-Commit-Position: refs/heads/master@{#43512}
Committed: https://chromium.googlesource.com/v8/v8/+/88c240bda5b0cf48e0eb08156a192a95fcf5e44b

[Michael Achenbach, 2017-03-01 12:39:31]

The CQ bit was checked by machenbach@chromium.org

[Michael Achenbach, 2017-03-01 12:39:31]

Created Revert of [wasm]implement simd lowering for f32x4->i32x4, i32x4 min/max
and shift instructions

[commit-bot: I haz the power, 2017-03-01 12:39:44]

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, 2017-03-01 12:39:49]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1488371971466420, "parent_rev":
"d0e1de1705993efa508d3dff238fafa9fc078ae0", "commit_rev":
"88c240bda5b0cf48e0eb08156a192a95fcf5e44b"}

[commit-bot: I haz the power, 2017-03-01 12:39:53]

Description was changed from

==========
Revert of [wasm]implement simd lowering for f32x4->i32x4, i32x4 min/max and
shift instructions (patchset #2 id:20001 of
https://codereview.chromium.org/2718323003/ )

Reason for revert:
breaks nosse4:
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20debug/builds...

Original issue's description:
> [wasm]implement simd lowering for f32x4->i32x4, i32x4 min/max and shift
instructions
> 
> BUG=v8:4124
>
R=bradnelson@chromium.org,bbudge@chromium.org,gdeepti@chromium.org,mtrofin@ch...
> 
> Review-Url: https://codereview.chromium.org/2718323003
> Cr-Commit-Position: refs/heads/master@{#43510}
> Committed:
https://chromium.googlesource.com/v8/v8/+/f75748cf4ca696fff268787068419604815...

TBR=bbudge@chromium.org,bradnelson@chromium.org,gdeepti@chromium.org,mtrofin@...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4124
==========

to

==========
Revert of [wasm]implement simd lowering for f32x4->i32x4, i32x4 min/max and
shift instructions (patchset #2 id:20001 of
https://codereview.chromium.org/2718323003/ )

Reason for revert:
breaks nosse4:
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20debug/builds...

Original issue's description:
> [wasm]implement simd lowering for f32x4->i32x4, i32x4 min/max and shift
instructions
> 
> BUG=v8:4124
>
R=bradnelson@chromium.org,bbudge@chromium.org,gdeepti@chromium.org,mtrofin@ch...
> 
> Review-Url: https://codereview.chromium.org/2718323003
> Cr-Commit-Position: refs/heads/master@{#43510}
> Committed:
https://chromium.googlesource.com/v8/v8/+/f75748cf4ca696fff268787068419604815...

TBR=bbudge@chromium.org,bradnelson@chromium.org,gdeepti@chromium.org,mtrofin@...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4124

Review-Url: https://codereview.chromium.org/2723943003
Cr-Commit-Position: refs/heads/master@{#43512}
Committed:
https://chromium.googlesource.com/v8/v8/+/88c240bda5b0cf48e0eb08156a192a95fcf...
==========

[commit-bot: I haz the power, 2017-03-01 12:39:54]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/88c240bda5b0cf48e0eb08156a192a95fcf...