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451c6e5854
glibc/sysdeps
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Sunil K Pandey 451c6e5854 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>
2022-10-18 13:26:33 -07:00
..
aarch64 Use PTR_MANGLE and PTR_DEMANGLE unconditionally in C sources 2022-10-18 17:04:10 +02:00
alpha Use PTR_MANGLE and PTR_DEMANGLE unconditionally in C sources 2022-10-18 17:04:10 +02:00
arc Use PTR_MANGLE and PTR_DEMANGLE unconditionally in C sources 2022-10-18 17:04:10 +02:00
arm Use PTR_MANGLE and PTR_DEMANGLE unconditionally in C sources 2022-10-18 17:04:10 +02:00
csky Use PTR_MANGLE and PTR_DEMANGLE unconditionally in C sources 2022-10-18 17:04:10 +02:00
generic Use PTR_MANGLE and PTR_DEMANGLE unconditionally in C sources 2022-10-18 17:04:10 +02:00
gnu errlist: add missing entry for EDEADLOCK (bug 29545) 2022-09-08 11:40:24 +02:00
hppa hppa: Fix initialization of dp register [BZ 29635] 2022-10-01 19:49:25 +00:00
htl htl: Make pthread*_cond_timedwait register wref before releasing mutex 2022-08-22 22:27:24 +02:00
hurd hurd: Fix pthread_kill on exiting/ted thread 2022-01-15 15:11:54 +01:00
i386 Use PTR_MANGLE and PTR_DEMANGLE unconditionally in C sources 2022-10-18 17:04:10 +02:00
ia64 Update _FloatN header support for C++ in GCC 13 2022-09-28 20:10:08 +00:00
ieee754 math: Fix asin and acos invalid exception with old gcc 2022-10-17 08:18:52 +01:00
loongarch Use PTR_MANGLE and PTR_DEMANGLE unconditionally in C sources 2022-10-18 17:04:10 +02:00
m68k Use PTR_MANGLE and PTR_DEMANGLE unconditionally in C sources 2022-10-18 17:04:10 +02:00
mach Use PTR_MANGLE and PTR_DEMANGLE unconditionally in C sources 2022-10-18 17:04:10 +02:00
microblaze Use PTR_MANGLE and PTR_DEMANGLE unconditionally in C sources 2022-10-18 17:04:10 +02:00
mips Use PTR_MANGLE and PTR_DEMANGLE unconditionally in C sources 2022-10-18 17:04:10 +02:00
nios2 Use PTR_MANGLE and PTR_DEMANGLE unconditionally in C sources 2022-10-18 17:04:10 +02:00
nptl Use atomic_exchange_release/acquire 2022-09-26 16:58:08 +01:00
or1k Use atomic_exchange_release/acquire 2022-09-26 16:58:08 +01:00
posix get_nscd_addresses: Fix subscript typos [BZ #29605] 2022-09-28 12:47:10 -04:00
powerpc Use PTR_MANGLE and PTR_DEMANGLE unconditionally in C sources 2022-10-18 17:04:10 +02:00
pthread Do not define static_assert or thread_local in headers for C2x 2022-09-07 18:39:28 +00:00
riscv Use PTR_MANGLE and PTR_DEMANGLE unconditionally in C sources 2022-10-18 17:04:10 +02:00
s390 Use PTR_MANGLE and PTR_DEMANGLE unconditionally in C sources 2022-10-18 17:04:10 +02:00
sh Use PTR_MANGLE and PTR_DEMANGLE unconditionally in C sources 2022-10-18 17:04:10 +02:00
sparc Use PTR_MANGLE and PTR_DEMANGLE unconditionally in C sources 2022-10-18 17:04:10 +02:00
unix Introduce <pointer_guard.h>, extracted from <sysdep.h> 2022-10-18 17:03:55 +02:00
wordsize-32 Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
wordsize-64 Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
x86 elf: Remove _dl_string_hwcap 2022-10-06 07:59:48 -03:00
x86_64 x86_64: Implement evex512 version of memchr, rawmemchr and wmemchr 2022-10-18 13:26:33 -07:00