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98408b95b1
glibc/sysdeps/powerpc
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Rajalakshmi Srinivasaraghavan 98408b95b1 powerpc: POWER7 strncpy optimization for unaligned string 
This patch optimizes strncpy for power7 for unaligned source or
destination address. The source or destination address is aligned
to doubleword and data is shifted based on the alignment and
added with the previous loaded data to be written as a doubleword.
For each load, cmpb instruction is used for faster null check.

The new optimization shows 10 to 70% of performance improvement
for longer string though it does not show big difference on string
size less than 16 due to additional checks.Hence this new algorithm
is restricted to string greater than 16.
2015-02-12 13:16:08 -05:00
..
bits Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
fpu powerpc: Fix fesetexceptflag [BZ#17885] 2015-01-28 05:59:21 -05:00
nofpu Fix powerpc-nofpu fesetenv namespace (bug 17748). 2015-01-14 21:35:40 +00:00
nptl powerpc: Fix Copyright dates and CL entry 2015-01-12 12:58:34 -05:00
power4 Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
power5+/fpu Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
power6 Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
power7/fpu Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
powerpc32 powerpc: drop R_PPC_REL16 check 2015-02-10 06:09:22 -05:00
powerpc64 powerpc: POWER7 strncpy optimization for unaligned string 2015-02-12 13:16:08 -05:00
soft-fp
sys/platform Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
abort-instr.h
dl-procinfo.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
dl-procinfo.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
dl-tls.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
ffs.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
fpu_control.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
gccframe.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
ifunc-sel.h
Implies
jmpbuf-offsets.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
jmpbuf-unwind.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
ldsodefs.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
locale-defines.sym
longjmp.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
machine-gmon.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
Makefile
math-tests.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
memusage.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
mp_clz_tab.c
novmx-longjmp.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
novmx-sigjmp.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
novmxsetjmp.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
preconfigure
rtld-global-offsets.sym
sched_cpucount.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
sigjmp.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
sotruss-lib.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
stackinfo.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
strcat.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
sysdep.h powerpc: abort transaction in syscalls 2015-01-12 06:32:08 -05:00
test-arith.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
test-arithf.c
test-gettimebase.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tls-macros.h
tst-stack-align.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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