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authorSunil K Pandey <skpgkp2@gmail.com>2022-08-18 06:48:07 -0700
committerSunil K Pandey <skpgkp2@gmail.com>2022-10-18 13:26:33 -0700
commit451c6e58540e8571e31581c04c4829e5d2cfe8ac (patch)
tree4016d09705d0bee74009c8cb00113296ea9c2ddc /support/test-driver.h
parent932dd83efdce7dbe7c008a27c4eff424a109b3a0 (diff)
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x86_64: Implement evex512 version of memchr, rawmemchr and wmemchr
This patch implements following evex512 version of string functions.
evex512 version takes up to 30% less cycle as compared to evex,
depending on length and alignment.

- memchr function using 512 bit vectors.
- rawmemchr function using 512 bit vectors.
- wmemchr function using 512 bit vectors.

Code size data:

memchr-evex.o		762 byte
memchr-evex512.o	576 byte (-24%)

rawmemchr-evex.o	461 byte
rawmemchr-evex512.o	412 byte (-11%)

wmemchr-evex.o		794 byte
wmemchr-evex512.o	552 byte (-30%)

Placeholder function, not used by any processor at the moment.

Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>
Diffstat (limited to 'support/test-driver.h')
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