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e6a1c5dc77
glibc/sysdeps/sparc/sparc32/sparcv9
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Patrick McGehearty e6a1c5dc77 sparc: M7 optimized memset/bzero 
Support added to identify Sparc M7/T7/S7/M8/T8 processor capability.
Performance tests run on Sparc S7 using new code and old niagara4 code.

Optimizations for memset also apply to bzero as they share code.

For memset/bzero, performance comparison with niagara4 code:
For memset nonzero data,
  256-1023 bytes - 60-90% gain (in cache); 5% gain (out of cache)
  1K+ bytes - 80-260% gain (in cache); 40-80% gain (out of cache)
For memset zero data (and bzero),
  256-1023 bytes - 80-120% gain (in cache), 0% gain (out of cache)
  1024+ bytes - 2-4x gain (in cache), 10-35% gain (out of cache)

Tested in sparcv9-*-* and sparc64-*-* targets in both multi and
non-multi arch configurations.

	Patrick McGehearty <patrick.mcgehearty@oracle.com>
	Adhemerval Zanella  <adhemerval.zanella@linaro.org>

	* sysdeps/sparc/sparc32/sparcv9/multiarch/Makefile
	(sysdeps_routines): Add memset-niagara7.
	* sysdeps/sparc/sparc64/multiarch/Makefile (sysdes_rotuines):
	Likewise.
	* sysdeps/sparc/sparc32/sparcv9/multiarch/memset-niagara7.S: New
	file.
	* sysdeps/sparc/sparc64/multiarch/memset-niagara7.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/ifunc-impl-list.c
	(__libc_ifunc_impl_list): Add __bzero_niagara7 and __memset_niagara7.
	* sysdeps/sparc/sparc64/multiarch/ifunc-memset.h (IFUNC_SELECTOR):
	Add niagara7 option.
	* NEWS: Mention sparc m7 optimized memcpy, mempcpy, memmove, and
	memset.
2017-12-14 08:48:19 -02:00
..
fpu sparc: Fix sparv9 multiarch build 2017-12-01 15:47:23 -02:00
multiarch sparc: M7 optimized memset/bzero 2017-12-14 08:48:19 -02:00
addmul_1.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
atomic-machine.h Optimize generic spinlock code and use C11 like atomic macros. 2017-06-06 09:41:56 +02:00
backtrace.h Use libgcc unwinder for sparc backtraces, if available. 2013-01-21 14:15:30 -08:00
bzero.c
cpu_relax.c sparc: refactor cpu_relax to C 2017-12-01 11:51:10 -02:00
dotmul.S
hp-timing.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
Makefile sparc: Assume VIS3 support 2017-11-29 08:18:00 -02:00
memchr.S
memcmp.S
memcpy.S
memmove.S sparc: assembly version of memmove for ultra1+ 2017-12-14 08:47:09 -02:00
memset.S
mul_1.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
pthread_barrier_wait.c New pthread_barrier algorithm to fulfill barrier destruction requirements. 2016-01-15 21:20:34 +01:00
pthread_spin_init.c SPARC: Consolidate unnecessary nptl/ subdirectories. 2014-06-25 10:04:14 -07:00
pthread_spin_lock.S SPARC: Consolidate unnecessary nptl/ subdirectories. 2014-06-25 10:04:14 -07:00
pthread_spin_trylock.S SPARC: Consolidate unnecessary nptl/ subdirectories. 2014-06-25 10:04:14 -07:00
pthread_spin_unlock.S SPARC: Consolidate unnecessary nptl/ subdirectories. 2014-06-25 10:04:14 -07:00
rawmemchr.S
rem.S
rtld-memcpy.c Use generic memset/memcpy in rtld on sparcv9/sparc64. 2012-03-28 22:22:15 -07:00
rtld-memmove.c sparc: assembly version of memmove for ultra1+ 2017-12-14 08:47:09 -02:00
rtld-memset.c Use generic memset/memcpy in rtld on sparcv9/sparc64. 2012-03-28 22:22:15 -07:00
sdiv.S
sem_post.c Fix sparc semaphore implementation after recent changes. 2015-01-31 23:39:50 -08:00
sem_waitcommon.c Fix sparc semaphore implementation after recent changes. 2015-01-31 23:39:50 -08:00
stpcpy.S
stpncpy.S
strcat.S
strchr.S
strcmp.S
strcpy.S
strcspn.S
strlen.S sparc: Optimize strlen using techniques from powerpc implementation. 2010-03-09 06:42:53 -08:00
strncmp.S
strncpy.S
strpbrk.S
strrchr.c
strspn.S
submul_1.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
udiv.S sparc: Fix .udiv plt on libc 2017-04-06 15:14:44 -03:00
umul.S
urem.S