Rajalakshmi Srinivasaraghavan b42f8cad52 powerpc: strstr optimization ...

This patch optimizes strstr function for power >= 7 systems.  Performance
gain is obtained using aligned memory access and usage of cmpb
instruction for quicker comparison.  The average improvement of this
optimization is ~40%.  Tested on ppc64 and ppc64le.

2015-07-16  Rajalakshmi Srinivasaraghavan  <raji@linux.vnet.ibm.com>

	* sysdeps/powerpc/powerpc64/multiarch/Makefile: Add strstr().
	* sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c: Likewise.
	* sysdeps/powerpc/powerpc64/power7/strstr.S: New File.
	* sysdeps/powerpc/powerpc64/multiarch/strstr-power7.S: New File.
	* sysdeps/powerpc/powerpc64/multiarch/strstr-ppc64.c: New File.
	* sysdeps/powerpc/powerpc64/multiarch/strstr.c: New File.

2015-07-16 13:43:51 -03:00

..

fpu

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2015-01-02 16:29:47 +00:00

multiarch

PowerPC: Adjust multiarch Implies for PowerPC64

2013-12-13 14:29:27 -05:00

add_n.S

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2015-01-02 16:29:47 +00:00

bcopy.c

PowerPC: optimized memmove for POWER7/PPC64

2014-07-07 15:41:21 -05:00

Implies

powerpc: Re-work the Implies structure

2010-06-30 09:57:38 -07:00

Makefile

Optimized strcasecmp for Power7

2011-12-17 20:32:59 -05:00

memchr.S

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2015-01-02 16:29:47 +00:00

memcmp.S

powerpc: Fix POWER7/PPC64 performance regression on LE

2015-01-13 14:35:40 -05:00

memcpy.S

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2015-01-02 16:29:47 +00:00

memmove.S

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mempcpy.S

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memrchr.S

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memset.S

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rawmemchr.S

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stpcpy.S

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stpncpy.S

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strcasecmp_l.S

Optimized strcasecmp for Power7

2011-12-17 20:32:59 -05:00

strcasecmp.S

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2015-01-02 16:29:47 +00:00

strchr.S

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strchrnul.S

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strcmp.S

powerpc: Optimize POWER7 strcmp trailing checks

2015-01-13 14:35:40 -05:00

strcpy.S

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2015-01-02 16:29:47 +00:00

strlen.S

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strncmp.S

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strncpy.S

powerpc: POWER7 strncpy optimization for unaligned string

2015-02-12 13:16:08 -05:00

strnlen.S

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2015-01-02 16:29:47 +00:00

strrchr.S

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strstr.S

powerpc: strstr optimization

2015-07-16 13:43:51 -03:00

sub_n.S

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2015-01-02 16:29:47 +00:00