Commit Graph

11 Commits

Author SHA1 Message Date
Mike Klein
6b43c30cd7 add mad_unorm8 instruction
At some point adding more and more complex instructions reduces
to the absurdity of SolveTheWholeProblem-The-Instruction, but
I think this one will come up often enough to still make sense.
mad() makes sense for unorm8 just about everywhere mad() makes
sense for f32.

This instruction won't matter to a JIT, but helps the interpreter.

Change-Id: Iace92296cffbb6fbc3acd1f853cb01c51792f796
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/218716
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
2019-06-05 20:46:02 +00:00
Mike Klein
754bad3f38 hoist loop-invariant code out of the loop
I'm of two minds about this... it adds register pressure and really only
tends to hoist few instructions that are fairly cheap anway.  On the
other hand, it's neat, it's easy to turn off (just set the initial
hoist value to false in Builder::push()) and it does deliver a
noticeable though slight performance improvement in the interpreter.

I think the final decision will probably come down to what we think
about maintainability?

Change-Id: Idd6346f70f03188917918406731154246a7c6fcb
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/218584
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
2019-06-05 16:31:41 +00:00
Mike Klein
c2d9a3145b Revert "print 1/K floats as fractions"
This reverts commit 346f82c1c3.

Reason for revert: *SAN bots

Original change's description:
> print 1/K floats as fractions
> 
> Change-Id: Id00cbd0950e77debb5ab5d45541dc0f8d13a3c42
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/218338
> Reviewed-by: Brian Osman <brianosman@google.com>
> Commit-Queue: Mike Klein <mtklein@google.com>

TBR=mtklein@google.com,brianosman@google.com

Change-Id: Ic35cec97d2dc2c1e19dbdf8ea7b505ad75072da1
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/218529
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
2019-06-05 14:12:26 +00:00
Mike Klein
346f82c1c3 print 1/K floats as fractions
Change-Id: Id00cbd0950e77debb5ab5d45541dc0f8d13a3c42
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/218338
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
2019-06-04 21:11:22 +00:00
Mike Klein
3c00d3d379 dump register and instruction count
Change-Id: Ib0d4f354787e413749fdda8b59ccc2f94472b0ce
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/218243
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
2019-06-04 17:27:29 +00:00
Mike Klein
9656dcedc2 add extract instruction
Kind of the flip side of pack.

Made slightly awkward by instructions having only one immediate...
calling _BitScanForward / __builtin_ctz() at runtime seems to work
fine, but it really could have been done at compile time.

Change-Id: Ic83fe8e0a1603fb9189598dcc26c842cc797bf45
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/218241
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
2019-06-04 17:23:49 +00:00
Mike Klein
1665aaa5fd add pack instruction
This instruction can lower to some useful SSE/NEON
instructions, and even if not, is a handy way to
express the frequent paring of << and |.

I32_SWAR:  2.3 -> 1.9
I32:       2.6 -> 2.4
F32:       5.1 -> 4.7

Change-Id: Ia169ad40f0aaef32417e05d9bf91c2d2542e7b5f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/218238
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
2019-06-04 17:14:49 +00:00
Mike Klein
d7d04dc5eb add mul_unorm8 instruction
Another way for an interpreter to go faster
is to provide better instructions.

mul_unorm8 is one we use all the time.

Drops _I32 bench from ~3.6ns/px to ~2.6ns/px.

Change-Id: I9d08914c114048b79075796af9ec802236b35706
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/218236
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
2019-06-04 16:59:49 +00:00
Mike Klein
7b7077cc36 centralize test/bench SkVM builders
Eliminate the duplicate functionality,
and better testing for the bench builders.

Change-Id: If20e52107738903f854aec431416e573d7a7d640
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/218041
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
2019-06-04 16:55:59 +00:00
Mike Klein
12818515b5 add a x*y+0 -> x*y peephole
This is mostly to test how easy rebaselining SkVMTest is.

Change-Id: I27ab6f6bb8b7e126327374009783afd86d416f55
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/218039
Reviewed-by: Brian Osman <brianosman@google.com>
2019-06-03 22:25:27 +00:00
Mike Klein
267f50773c streamline SkVM test rebaselining
- keep expectations in resources/
  - overwrite automatically if needed
    so we can see the diff in Git

Change-Id: I2486b127ebcc7f40332fd0462e38b1af04d3e32b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/218038
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
2019-06-03 22:24:50 +00:00