[wasm] New implementation of popcnt and ctz.

[wasm] New implementation of popcnt and ctz.

This patch provides a new implementation of popcnt and ctz in the case
where the platform does not provide these instructions. Instead of
building a TF graph which implements it we now call a C function.

Additionally I turned on additional tests in test-run-wasm-64.cc

R=titzer@chromium.org

Committed: https://crrev.com/b4889f7d93720cebeb2c459fa8c7af0808837f2b
Cr-Commit-Position: refs/heads/master@{#35685}

[ahaas, 2016-04-20 11:46:04]

ahaas@chromium.org changed reviewers:
+ clemensh@chromium.org

[titzer, 2016-04-21 07:07:49]

On 2016/04/06 15:09:28, ahaas wrote:

lgtm

[ahaas, 2016-04-21 07:20:33]

The CQ bit was checked by ahaas@chromium.org

[commit-bot: I haz the power, 2016-04-21 07:20:42]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1857363003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1857363003/1

[commit-bot: I haz the power, 2016-04-21 07:45:45]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-22 19:14:06]

Description was changed from

==========
[wasm] New implementation of popcnt and ctz.

This patch provides a new implementation of popcnt and ctz in the case
where the platform does not provide these instructions. Instead of
building a TF graph which implements it we now call a C function.

Additionally I turned on additional tests in test-run-wasm-64.cc

R=titzer@chromium.org
==========

to

==========
[wasm] New implementation of popcnt and ctz.

This patch provides a new implementation of popcnt and ctz in the case
where the platform does not provide these instructions. Instead of
building a TF graph which implements it we now call a C function.

Additionally I turned on additional tests in test-run-wasm-64.cc

R=titzer@chromium.org

Committed: https://crrev.com/b4889f7d93720cebeb2c459fa8c7af0808837f2b
Cr-Commit-Position: refs/heads/master@{#35685}
==========

[commit-bot: I haz the power, 2016-04-22 19:14:07]

Patchset 1 (id:??) landed as
https://crrev.com/b4889f7d93720cebeb2c459fa8c7af0808837f2b
Cr-Commit-Position: refs/heads/master@{#35685}