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30a81dae5b
glibc/sysdeps
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Siddhesh Poyarekar 30a81dae5b aarch64: Optimized memcmp for medium to large sizes 
This improved memcmp provides a fast path for compares up to 16 bytes
and then compares 16 bytes at a time, thus optimizing loads from both
sources.  The glibc memcmp microbenchmark retains performance (with an
error of ~1ns) for smaller compare sizes and reduces up to 31% of
execution time for compares up to 4K on the APM Mustang.  On Qualcomm
Falkor this improves to almost 48%, i.e. it is almost 2x improvement
for sizes of 2K and above.

	* sysdeps/aarch64/memcmp.S: Widen comparison to 16 bytes at a
	time.
2018-03-06 19:22:40 +05:30
..
aarch64 aarch64: Optimized memcmp for medium to large sizes 2018-03-06 19:22:40 +05:30
alpha Update Alpha libm-test-ulps 2018-01-27 13:31:38 +01:00
arm Move LDBL_CLASSIFY_COMPAT to its own header. 2018-02-01 21:01:00 +00:00
generic Rename nptl-signals.h to internal-signals.h 2018-02-22 16:43:59 -03:00
gnu Add TCP_FASTOPEN_KEY, TCP_FASTOPEN_NO_COOKIE from Linux 4.15. 2018-02-06 00:42:22 +00:00
hppa Fix ulps for pow on hppa. 2018-02-17 13:46:50 -05:00
i386 Fix i386 fenv_private.h float128 for 32-bit --with-fpmath=sse (bug 22902). 2018-02-28 21:55:51 +00:00
ia64 Remove mplog and mpexp 2018-02-15 12:41:05 +00:00
ieee754 Mechanically remove _IO_ name aliases for types and constants. 2018-02-21 14:11:05 -05:00
init_array sysdeps/init_array: Add PREINIT_FUNCTION to crti.S 2018-01-29 10:22:26 -08:00
m68k Remove mplog and mpexp 2018-02-15 12:41:05 +00:00
mach Add missing start-of-file descriptive comment. 2018-03-06 09:21:04 +01:00
microblaze Move LDBL_CLASSIFY_COMPAT to its own header. 2018-02-01 21:01:00 +00:00
mips Move LDBL_CLASSIFY_COMPAT to its own header. 2018-02-01 21:01:00 +00:00
nios2 Move LDBL_CLASSIFY_COMPAT to its own header. 2018-02-01 21:01:00 +00:00
nptl nptl: Move pthread_atfork to libc_nonshared.a 2018-03-01 08:18:48 +01:00
posix Add missing start-of-file descriptive comment. 2018-03-06 09:21:04 +01:00
powerpc Fix powerpc ifunc-sel.h build for -Os. 2018-03-02 22:27:56 +00:00
pthread hurd: fix timer_routines.c build 2018-02-27 01:15:39 +01:00
riscv RISC-V: fmax/fmin: Handle signalling NaNs correctly. 2018-02-22 14:31:54 -05:00
s390 Fix s390 -Os iconv build. 2018-03-05 21:46:55 +00:00
sh Update SH libm-tests-ulps 2018-02-14 14:03:40 -02:00
sparc Update sparc ulps 2018-02-22 16:44:58 -03:00
tile Unify and simplify bits/byteswap.h, bits/byteswap-16.h headers (bug 14508, bug 15512, bug 17082, bug 20530). 2018-02-06 21:55:08 +00:00
unix Add missing start-of-file descriptive comment. 2018-03-06 09:21:04 +01:00
wordsize-32 Use libc_hidden_* for strtoumax (bug 15105). 2018-02-28 14:16:21 +00:00
wordsize-64 Use libc_hidden_* for strtoumax (bug 15105). 2018-02-28 14:16:21 +00:00
x86 Unify and simplify bits/byteswap.h, bits/byteswap-16.h headers (bug 14508, bug 15512, bug 17082, bug 20530). 2018-02-06 21:55:08 +00:00
x86_64 Remove mplog and mpexp 2018-02-15 12:41:05 +00:00