Chromium Code Reviews Chromium Code Reviews
Issue
1290423007:
Add build targets for advanced Intel instruction sets (1 of 3). (Closed)
DescriptionAdd build targets for advanced Intel instruction sets (1 of 3).
CL (1 of 3) adds empty lists in our .gypi,
and builds the files in those empty lists with the appropriate flags.
CL (2 of 3) will have Chrome's GYP and GN files read these lists,
and build them with the appropriate flags.
CL (3 of 3) will add runtime detection and stub files to the lists
with empty Init_sse42(), Init_avx(), Init_avx2() methods.
After that, we should be able to use SSE 4.2, AVX, and AVX2 if desired.
Some motivation:
- SSE 4.2 adds some sweet string-oriented methods that
can help us write fast high quality 32-bit hashes.
- AVX is SSE doubled, e.g. 8 floats or two SkPMFloat at a time.
- AVX2 is SSE2 doubled, e.g. 8 pixels at a time.
BUG=skia:4117
Committed: https://skia.googlesource.com/skia/+/5141d90796034a932a48738cf76091957314c9a1
Patch Set 1 #Patch Set 2 : gyp,preconfig #
Messages
Total messages: 10 (4 generated)
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