Revert runtime lowering of wasm SIMD ops

Revert runtime lowering of wasm SIMD ops

This CL reverts the runtime lowering introduced here -
https://codereview.chromium.org/1991143002/
Additional ops to the runtime pass will cause GC issues as WASM frames may
have outgoing arguments to runtime calls that have pointers that aren't scanned.

Preserving decoding of SIMD opcodes and macros for native implementations.

R=bbudge@chromium.org, mtrofin@chromium.org, bradnelson@chromium.org

Committed: https://crrev.com/fe555065ea53da31dc0e7b0920d7d6aee73403c7
Cr-Commit-Position: refs/heads/master@{#38564}

[gdeepti, 2016-08-10 20:15:06]

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

[commit-bot: I haz the power, 2016-08-10 20:15:10]

Dry run: 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, 2016-08-10 20:40:44]

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

[commit-bot: I haz the power, 2016-08-10 20:40:44]

Dry run: This issue passed the CQ dry run.

[bradnelson, 2016-08-10 21:22:50]

lgtm, on to native!

[gdeepti, 2016-08-10 21:26:02]

The CQ bit was checked by gdeepti@chromium.org

[commit-bot: I haz the power, 2016-08-10 21:26:06]

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, 2016-08-10 21:28:58]

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

[commit-bot: I haz the power, 2016-08-10 21:28:59]

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/21579)

[Mircea Trofin, 2016-08-10 21:37:14]

On 2016/08/10 21:28:59, commit-bot: I haz the power wrote:
> 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/21579)

lgtm

[Mircea Trofin, 2016-08-10 21:37:19]

The CQ bit was checked by mtrofin@chromium.org

[commit-bot: I haz the power, 2016-08-10 21:37:30]

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, 2016-08-10 21:39:13]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-08-10 21:39:29]

Description was changed from

==========
Revert runtime lowering of wasm SIMD ops

This CL reverts the runtime lowering introduced here -
https://codereview.chromium.org/1991143002/
Additional ops to the runtime pass will cause GC issues as WASM frames may
have outgoing arguments to runtime calls that have pointers that aren't scanned.

Preserving decoding of SIMD opcodes and macros for native implementations.

R=bbudge@chromium.org, mtrofin@chromium.org, bradnelson@chromium.org
==========

to

==========
Revert runtime lowering of wasm SIMD ops

This CL reverts the runtime lowering introduced here -
https://codereview.chromium.org/1991143002/
Additional ops to the runtime pass will cause GC issues as WASM frames may
have outgoing arguments to runtime calls that have pointers that aren't scanned.

Preserving decoding of SIMD opcodes and macros for native implementations.

R=bbudge@chromium.org, mtrofin@chromium.org, bradnelson@chromium.org

Committed: https://crrev.com/fe555065ea53da31dc0e7b0920d7d6aee73403c7
Cr-Commit-Position: refs/heads/master@{#38564}
==========

[commit-bot: I haz the power, 2016-08-10 21:39:30]

Patchset 1 (id:??) landed as
https://crrev.com/fe555065ea53da31dc0e7b0920d7d6aee73403c7
Cr-Commit-Position: refs/heads/master@{#38564}