Revert of SkNx refactoring

Revert of SkNx refactoring (patchset #4 id:60001 of https://codereview.chromium.org/1690633003/ )

Reason for revert:
Precautionary revert for chromium:586487

Original issue's description:
> 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

TBR=herb@google.com,mtklein@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=chromium:586487
Committed: https://skia.googlesource.com/skia/+/97120a7ed193b2e081c9503a7c58657e0c6f4920

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

Created Revert of SkNx refactoring

[mtklein, 2016-02-12 21:54:31]

Description was changed from

==========
Revert of SkNx refactoring (patchset #4 id:60001 of
https://codereview.chromium.org/1690633003/ )

Reason for revert:
Precautionary revert for chromium:586487

Original issue's description:
> 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

TBR=herb@google.com,mtklein@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=skia:
==========

to

==========
Revert of SkNx refactoring (patchset #4 id:60001 of
https://codereview.chromium.org/1690633003/ )

Reason for revert:
Precautionary revert for chromium:586487

Original issue's description:
> 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

TBR=herb@google.com,mtklein@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=chromium:586487
==========

[mtklein, 2016-02-12 21:54:33]

The CQ bit was checked by mtklein@google.com

[commit-bot: I haz the power, 2016-02-12 21:54:39]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1696903002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1696903002/1

[commit-bot: I haz the power, 2016-02-12 22:19:08]

Description was changed from

==========
Revert of SkNx refactoring (patchset #4 id:60001 of
https://codereview.chromium.org/1690633003/ )

Reason for revert:
Precautionary revert for chromium:586487

Original issue's description:
> 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

TBR=herb@google.com,mtklein@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=chromium:586487
==========

to

==========
Revert of SkNx refactoring (patchset #4 id:60001 of
https://codereview.chromium.org/1690633003/ )

Reason for revert:
Precautionary revert for chromium:586487

Original issue's description:
> 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

TBR=herb@google.com,mtklein@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=chromium:586487

Committed:
https://skia.googlesource.com/skia/+/97120a7ed193b2e081c9503a7c58657e0c6f4920
==========

[commit-bot: I haz the power, 2016-02-12 22:19:08]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/97120a7ed193b2e081c9503a7c58657e0c6f4920

[herb_g, 2016-02-12 23:19:22]

lgtm