diff options
| author |  mtklein <mtklein@chromium.org> | 2016-04-14 12:27:38 -0700 |
|---|---|---|
| committer |  Commit bot <commit-bot@chromium.org> | 2016-04-14 12:27:38 -0700 |
| commit | cbe3c1af987d622ea67ef560d855b41bb14a0ce9 (patch) | |
| tree | 615b57bc9af7b6e1d15aa5db00ad790d1f9f037b /dm | |
| parent | d06920a29fe11c68bde2b93948ec99f277bb8459 (diff) | |
skcpu: sse4.1 floor, f16c f16<->f32
- floor with roundps is about 4.5x faster when available
- f16 srcover_n is similar to but a little faster than the version in https://codereview.chromium.org/1884683002. This new one fuses the dst load/stores into the f16<->f32 conversions:
+0x180 movups (%r15), %xmm1
+0x184 vcvtph2ps (%rbx), %xmm2
+0x189 movaps %xmm1, %xmm3
+0x18c shufps $255, %xmm3, %xmm3
+0x190 movaps %xmm0, %xmm4
+0x193 subps %xmm3, %xmm4
+0x196 mulps %xmm2, %xmm4
+0x199 addps %xmm1, %xmm4
+0x19c vcvtps2ph $0, %xmm4, (%rbx)
+0x1a2 addq $16, %r15
+0x1a6 addq $8, %rbx
+0x1aa decl %r14d
+0x1ad jne +0x180
If we decide to land this it'd be a good idea to convert most or all users of SkFloatToHalf_01 and SkHalfToFloat_01 over to the pointer-based versions.
BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1891513002
CQ_EXTRA_TRYBOTS=client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot
Review URL: https://codereview.chromium.org/1891513002
Diffstat (limited to 'dm')
0 files changed, 0 insertions, 0 deletions