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e6a1c5dc77
glibc/sysdeps/sparc
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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
..
bits sparc: support the ADP hw capability 2017-12-14 08:47:07 -02:00
fpu Sparc ulp update. 2017-12-06 12:18:51 -08:00
nptl nptl: Define __PTHREAD_MUTEX_{NUSERS_AFTER_KIND,USE_UNION} 2017-11-07 09:48:41 -02:00
sparc32 sparc: M7 optimized memset/bzero 2017-12-14 08:48:19 -02:00
sparc64 sparc: M7 optimized memset/bzero 2017-12-14 08:48:19 -02:00
sys
abort-instr.h
backtrace.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
configure sparc: Assume VIS3 support 2017-11-29 08:18:00 -02:00
configure.ac sparc: Assume VIS3 support 2017-11-29 08:18:00 -02:00
crti.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
crtn.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
dl-dtprocnum.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
dl-procinfo.c sparc: support the ADP hw capability 2017-12-14 08:47:07 -02:00
dl-procinfo.h sparc: support the ADP hw capability 2017-12-14 08:47:07 -02:00
dl-sysdep.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
dl-tls.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
gccframe.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
ldsodefs.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
machine-gmon.h gmon: Remove internal_function attribute 2017-08-31 16:16:07 +02:00
Makefile Enable unwind info in libc-start.c and backtrace.c 2017-09-19 15:07:58 +01:00
mempcpy.S Optimize mempcpy on sparc. 2012-03-28 22:35:26 -07:00
memusage.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
preconfigure Move base_machine and machine settings from configure.ac to sysdeps preconfigure fragments. 2014-06-25 17:52:56 +00:00
sparc-ifunc.h sparc: Remove ununsed ifunc assembly macros 2017-12-01 15:48:40 -02:00
sparc-mcount.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
stackinfo.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
Subdirs
sysdep.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00