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70c97f8493
glibc/sysdeps/aarch64
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Siddhesh Poyarekar 70c97f8493 aarch64,falkor: Ignore prefetcher hints for memmove tail 
The tail of the copy loops are unable to train the falkor hardware
prefetcher because they load from a different base compared to the hot
loop.  In this case avoid serializing the instructions by loading them
into different registers.  Also peel the last iteration of the loop
into the tail (and have them use different registers) since it gives
better performance for medium sizes.

This results in performance improvements of between 3% and 20% over
the current falkor implementation for sizes between 128 bytes and 1K
on the memmove-walk benchmark, thus mostly covering the regressions
seen against the generic memmove.

	* sysdeps/aarch64/multiarch/memmove_falkor.S
	(__memmove_falkor): Use multiple registers to move data in
	loop tail.
2018-05-11 00:08:02 +05:30
..
bits Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
fpu Move math_opt_barrier, math_force_eval to separate math-barriers.h. 2018-05-09 19:45:47 +00:00
multiarch aarch64,falkor: Ignore prefetcher hints for memmove tail 2018-05-11 00:08:02 +05:30
nptl hurd: add gscope support 2018-03-11 13:06:33 +01:00
soft-fp Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
__longjmp.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
abort-instr.h
atomic-machine.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
bsd-_setjmp.S
bsd-setjmp.S
configure
configure.ac
crti.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
crtn.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
dl-irel.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
dl-link.sym
dl-machine.h elf: Unify symbol address run-time calculation [BZ #19818] 2018-04-04 23:09:37 +01:00
dl-sysdep.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
dl-tls.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
dl-tlsdesc.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
dl-tlsdesc.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
dl-trampoline.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
dl-tunables.list Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
Implies
jmpbuf-offsets.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
jmpbuf-unwind.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
ldsodefs.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
libc-tls.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
libm-test-ulps [PATCH 1/7] sin/cos slow paths: avoid slow paths for small inputs 2018-04-03 16:52:16 +01:00
libm-test-ulps-name
linkmap.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
machine-gmon.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
Makefile
math-tests.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
mcount.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
memchr.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
memcmp.S aarch64: Fix branch target to loop16 2018-03-06 23:01:02 +05:30
memcpy.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
memmove.S
memset-reg.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
memset.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
memusage.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
preconfigure
rawmemchr.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
setjmp.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
sotruss-lib.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
stackinfo.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
start.S aarch64: fix static pie enabled libc when main is in a shared library 2018-01-12 18:10:03 +00:00
stpcpy.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
strchr.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
strchrnul.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
strcmp.S aarch64/strcmp: fix misaligned loop jump target 2018-02-22 23:48:14 +05:30
strcpy.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
string_private.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
strlen.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
strncmp.S aarch64/strncmp: Use lsr instead of mov+lsr 2018-03-15 08:06:21 +05:30
strnlen.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
strrchr.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
sysdep.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
tls-macros.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
tlsdesc.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
tlsdesc.sym
tst-audit.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
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