Sk4f: floor() via int32_t roundtrip.

Sk4f: floor() via int32_t roundtrip.

About 25% faster on both x86 and ARMv7.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1682953002
CQ_EXTRA_TRYBOTS=client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot

Committed: https://skia.googlesource.com/skia/+/e5fe9a42d487c8648101c6f8454575d6de1acafa

[mtklein_C, 2016-02-09 21:50:13]

Description was changed from

==========
Sk4f: floor() via int32_t roundtrip.

BUG=skia:
==========

to

==========
Sk4f: floor() via int32_t roundtrip.

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
CQ_EXTRA_TRYBOTS=client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot
==========

[mtklein, 2016-02-09 21:51:15]

Description was changed from

==========
Sk4f: floor() via int32_t roundtrip.

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
CQ_EXTRA_TRYBOTS=client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot
==========

to

==========
Sk4f: floor() via int32_t roundtrip.

About 25% faster on both x86 and ARMv7.

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
CQ_EXTRA_TRYBOTS=client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot
==========

[mtklein_C, 2016-02-09 21:51:30]

mtklein@chromium.org changed reviewers:
+ herb@google.com

[mtklein_C, 2016-02-09 21:51:30]

The CQ bit was checked by mtklein@chromium.org

[commit-bot: I haz the power, 2016-02-09 21:51:33]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1682953002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1682953002/1

[commit-bot: I haz the power, 2016-02-09 21:51:34]

Note for Reviewers:
The CQ is waiting for an approval.
If you believe that the CL is not ready yet, or if you would like to L-G-T-M
with comments then please uncheck the CQ checkbox.

Waiting for LGTM from valid reviewer(s) till 2016-02-10 03:51 UTC

[commit-bot: I haz the power, 2016-02-10 03:51:08]

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

[commit-bot: I haz the power, 2016-02-10 03:51:09]

No LGTM from a valid reviewer yet. Please ask for an LGTM from a
full Skia committer

[herb_g, 2016-02-10 15:47:24]

lgtm

[mtklein, 2016-02-10 15:55:07]

The CQ bit was checked by mtklein@google.com

[commit-bot: I haz the power, 2016-02-10 15:55:11]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1682953002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1682953002/1

[commit-bot: I haz the power, 2016-02-10 15:56:00]

Description was changed from

==========
Sk4f: floor() via int32_t roundtrip.

About 25% faster on both x86 and ARMv7.

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
CQ_EXTRA_TRYBOTS=client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot
==========

to

==========
Sk4f: floor() via int32_t roundtrip.

About 25% faster on both x86 and ARMv7.

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
CQ_EXTRA_TRYBOTS=client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot

Committed:
https://skia.googlesource.com/skia/+/e5fe9a42d487c8648101c6f8454575d6de1acafa
==========

[commit-bot: I haz the power, 2016-02-10 15:56:00]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/e5fe9a42d487c8648101c6f8454575d6de1acafa