SkNx refactoring

SkNx refactoring

  - add back Sk4i typedef
  - define SSE casts in terms of Sk4i
      * uint8  <-> float becomes uint8  <-> int <-> float
      * uint16 <-> float becomes uint16 <-> int <-> float

    This has the nice side effect of specializing uint8 <-> int
    and uint16 <-> int, which are useful in their own right.

There are many cast specializations now, some of which call each other.
I have tried to arrange them in some sort of sensible order, subject to
the constraint that those called must precede those who call.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1690633003
CQ_EXTRA_TRYBOTS=client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot

Committed: https://skia.googlesource.com/skia/+/c1eb311f4e98934476f1b2ad5d6de772cf140d60

[mtklein_C, 2016-02-11 03:27:09]

Description was changed from

==========
SkNx refactoring

  - add back Sk4i typedef
  - define SSE casts in terms of Sk4i
      * uint8  <-> float becomes uint8  <-> int <-> float
      * uint16 <-> float becomes uint16 <-> int <-> float

    This has the nice side effect of specializing uint8 <-> int
    and uint16 <-> int, which are useful in their own right.

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

to

==========
SkNx refactoring

  - add back Sk4i typedef
  - define SSE casts in terms of Sk4i
      * uint8  <-> float becomes uint8  <-> int <-> float
      * uint16 <-> float becomes uint16 <-> int <-> float

    This has the nice side effect of specializing uint8 <-> int
    and uint16 <-> int, which are useful in their own right.

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, 2016-02-11 03:40:31]

Description was changed from

==========
SkNx refactoring

  - add back Sk4i typedef
  - define SSE casts in terms of Sk4i
      * uint8  <-> float becomes uint8  <-> int <-> float
      * uint16 <-> float becomes uint16 <-> int <-> float

    This has the nice side effect of specializing uint8 <-> int
    and uint16 <-> int, which are useful in their own right.

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

==========
SkNx refactoring

  - add back Sk4i typedef
  - define SSE casts in terms of Sk4i
      * uint8  <-> float becomes uint8  <-> int <-> float
      * uint16 <-> float becomes uint16 <-> int <-> float

    This has the nice side effect of specializing uint8 <-> int
    and uint16 <-> int, which are useful in their own right.

There are many cast specializations now, some of which call each other.
I have tried to arrange them in some sort of sensible order, subject to
the constraint that those called must precede those who call.

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, 2016-02-11 03:41:31]

The CQ bit was checked by mtklein@google.com to run a CQ dry run

[commit-bot: I haz the power, 2016-02-11 03:41:40]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1690633003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1690633003/20001

[mtklein_C, 2016-02-11 03:58:45]

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

[commit-bot: I haz the power, 2016-02-11 03:58:56]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1690633003/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1690633003/40001

[mtklein_C, 2016-02-11 03:59:55]

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

[commit-bot: I haz the power, 2016-02-11 04:00:03]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1690633003/60001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1690633003/60001

[mtklein_C, 2016-02-11 04:21:27]

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

[commit-bot: I haz the power, 2016-02-11 04:34:01]

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

[commit-bot: I haz the power, 2016-02-11 04:34:02]

Dry run: This issue passed the CQ dry run.

[herb_g, 2016-02-11 15:20:41]

lgtm

[mtklein, 2016-02-11 15:58:43]

The CQ bit was checked by mtklein@google.com

[commit-bot: I haz the power, 2016-02-11 15:58:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1690633003/60001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1690633003/60001

[commit-bot: I haz the power, 2016-02-11 16:00:42]

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

[commit-bot: I haz the power, 2016-02-11 16:00:45]

Failed to request the patch to try. Please note that binary files are still
unsupported at the moment, this is being worked on.

Thanks for your patience.

Transient error: No JSON object could be decoded

[mtklein, 2016-02-11 16:08:34]

The CQ bit was checked by mtklein@google.com

[commit-bot: I haz the power, 2016-02-11 16:08:44]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1690633003/60001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1690633003/60001

[commit-bot: I haz the power, 2016-02-11 16:10:25]

Description was changed from

==========
SkNx refactoring

  - add back Sk4i typedef
  - define SSE casts in terms of Sk4i
      * uint8  <-> float becomes uint8  <-> int <-> float
      * uint16 <-> float becomes uint16 <-> int <-> float

    This has the nice side effect of specializing uint8 <-> int
    and uint16 <-> int, which are useful in their own right.

There are many cast specializations now, some of which call each other.
I have tried to arrange them in some sort of sensible order, subject to
the constraint that those called must precede those who call.

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

==========
SkNx refactoring

  - add back Sk4i typedef
  - define SSE casts in terms of Sk4i
      * uint8  <-> float becomes uint8  <-> int <-> float
      * uint16 <-> float becomes uint16 <-> int <-> float

    This has the nice side effect of specializing uint8 <-> int
    and uint16 <-> int, which are useful in their own right.

There are many cast specializations now, some of which call each other.
I have tried to arrange them in some sort of sensible order, subject to
the constraint that those called must precede those who call.

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/+/c1eb311f4e98934476f1b2ad5d6de772cf140d60
==========

[commit-bot: I haz the power, 2016-02-11 16:10:25]

Committed patchset #4 (id:60001) as
https://skia.googlesource.com/skia/+/c1eb311f4e98934476f1b2ad5d6de772cf140d60

[mtklein, 2016-02-12 21:54:18]

A revert of this CL (patchset #4 id:60001) has been created in
https://codereview.chromium.org/1696903002/ by mtklein@google.com.

The reason for reverting is: Precautionary revert for chromium:586487.