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glibc/sysdeps/powerpc/powerpc64/multiarch/Makefile

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PowerPC: multiarch memcpy for PowerPC64
2013-12-13 19:31:41 +00:00
ifeq ($(subdir),string)
sysdep_routines += memcpy-power7 memcpy-a2 memcpy-power6 memcpy-cell \
PowerPC: multirach memcmp for PowerPC64
2013-12-13 19:32:31 +00:00
memcpy-power4 memcpy-ppc64 memcmp-power7 memcmp-power4 \
PowerPC: multiarch memset/bzero for PowerPC64
2013-12-13 19:33:16 +00:00
memcmp-ppc64 memset-power7 memset-power6 memset-power4 \
PowerPC: memset optimization for POWER8/PPC64 This patch adds an optimized memset implementation for POWER8. For sizes from 0 to 255 bytes, a word/doubleword algorithm similar to POWER7 optimized one is used. For size higher than 255 two strategies are used: 1. If the constant is different than 0, the memory is written with altivec vector instruction; 2. If constant is 0, dbcz instructions are used. The loop is unrolled to clear 512 byte at time. Using vector instructions increases throughput considerable, with a double performance for sizes larger than 1024. The dcbz loops unrolls also shows performance improvement, by doubling throughput for sizes larger than 8192 bytes.
2014-07-15 16:19:09 +00:00
memset-ppc64 memset-power8 \
PowerPC: multiarch memrchr for PowerPC64
2013-12-13 19:36:50 +00:00
mempcpy-power7 mempcpy-ppc64 memchr-power7 memchr-ppc64 \
PowerPC: multiarch rawmemchr for PowerPC64
2013-12-13 19:37:26 +00:00
memrchr-power7 memrchr-ppc64 rawmemchr-power7 \
PowerPC: multiarch strnlen for PowerPC64
2013-12-13 19:38:50 +00:00
rawmemchr-ppc64 strlen-power7 strlen-ppc64 strnlen-power7 \
PowerPC: multiarch strncasecmp for PowerPC64
2013-12-13 19:40:28 +00:00
strnlen-ppc64 strcasecmp-power7 strcasecmp_l-power7 \
powerpc: Optimized strncmp for POWER8/PPC64 This patch adds an optimized POWER8 strncmp. The implementation focus on speeding up unaligned cases follwing the ideas of power8 strcmp. The algorithm first check the initial 16 bytes, then align the first function source and uses unaligned loads on second argument only. Aditional checks for page boundaries are done for unaligned cases (where sources alignment are different).
2015-01-09 21:04:26 +00:00
strncase-power7 strncase_l-power7 \
strncmp-power8 strncmp-power7 strncmp-power4 strncmp-ppc64 \
strchr-power7 strchr-ppc64 \
powerpc: multiarch Makefile cleanup for powerpc64 This patch cleanups the multiarch Makefile by putting the wide chars implementation to correct wcsmbs rule.
2015-01-20 20:41:38 +00:00
strchrnul-power7 strchrnul-ppc64 \
powerpc: Optimized st{r,p}cpy for POWER8/PPC64 This patch adds an optimized POWER8 strcpy using unaligned accesses. For strings up to 16 bytes the implementation first calculate the string size, like strlen, and issues a memcpy. For larger strings, source is first aligned to 16 bytes and then tested over a loop that reads 16 bytes am combine the cmpb results for speedup. Special case is added for page cross reads. It shows 30%-60% improvement over the optimized POWER7 one that uses only aligned accesses.
2014-12-23 11:59:44 +00:00
strcpy-power8 strcpy-power7 strcpy-ppc64 stpcpy-power8 \
stpcpy-power7 stpcpy-ppc64 \
PowerPC: strspn optimization for PPC64/POWER7 The optimization is achieved by following techniques: > hashing of needle. > hashing avoids scanning of duplicate entries in needle across the string. > initializing the hash table with Vector instructions (VSX) by quadword access. > unrolling when scanning for character in string across hash table.
2014-03-10 16:20:36 +00:00
strrchr-power7 strrchr-ppc64 strncat-power7 strncat-ppc64 \
powerpc: Add powerpc64 strpbrk optimization This patch makes the POWER7 optimized strpbrk generic by using default doubleword stores to zero the hash, instead of VSX instructions. Performance on POWER7/POWER8 does not change.
2014-11-19 21:27:56 +00:00
strncpy-power7 strncpy-ppc64 \
powerpc: Optimized st{r,p}ncpy for POWER8/PPC64 This patch adds an optimized POWER8 st{r,p}ncpy using unaligned accesses. It shows 10%-80% improvement over the optimized POWER7 one that uses only aligned accesses, specially on unaligned inputs. The algorithm first read and check 16 bytes (if inputs do not cross a 4K page size). The it realign source to 16-bytes and issue a 16 bytes read and compare loop to speedup null byte checks for large strings. Also, different from POWER7 optimization, the null pad is done inline in the implementation using possible unaligned accesses, instead of realying on a memset call. Special case is added for page cross reads.
2014-12-31 16:47:41 +00:00
stpncpy-power8 stpncpy-power7 stpncpy-ppc64 \
powerpc: Optimized strcmp for POWER8/PPC64 This patch adds an optimized POWER8 strcmp using unaligned accesses. The algorithm first check the initial 16 bytes, then align the first function source and uses unaligned loads on second argument only. Aditional checks for page boundaries are done for unaligned cases
2015-01-07 12:18:30 +00:00
strcmp-power8 strcmp-power7 strcmp-ppc64 \
powerpc: wordcopy/memmove cleanup for ppc64 This patch cleanup some multiarch code related to memmmove optimization. Initial IFUNC support added specialized wordcopy symbols which turned in local IFUNC calls used by memmove default implementation. This change by removing then and used the optimized memmove instead for supported chips.
2015-01-21 12:41:46 +00:00
strcat-power8 strcat-power7 strcat-ppc64 \
memmove-power7 memmove-ppc64 wordcopy-ppc64 bcopy-ppc64 \
powerpc: Add optimized P8 strspn This utilizes vectors and bitmasks. For small needle, large haystack, the performance improvement is upto 8x. For short strings (0-4B), the cost of computing the bitmask dominates, and is a tad slower.
2016-03-14 21:40:46 +00:00
strncpy-power8 strstr-power7 strstr-ppc64 \
powerpc: Optimization for strlen for POWER8. This implementation takes advantage of vectorization to improve performance of the loop over the current strlen implementation for POWER7.
2015-11-11 19:31:28 +00:00
strspn-power8 strspn-ppc64 strlen-power8
PowerPC: multiarch strncasecmp for PowerPC64
2013-12-13 19:40:28 +00:00
CFLAGS-strncase-power7.c += -mcpu=power7 -funroll-loops
CFLAGS-strncase_l-power7.c += -mcpu=power7 -funroll-loops
powerpc: multiarch Makefile cleanup for powerpc64 This patch cleanups the multiarch Makefile by putting the wide chars implementation to correct wcsmbs rule.
2015-01-20 20:41:38 +00:00
endif
ifeq ($(subdir),wcsmbs)
sysdep_routines += wcschr-power7 wcschr-power6 wcschr-ppc64 \
wcsrchr-power7 wcsrchr-power6 wcsrchr-ppc64 \
wcscpy-power7 wcscpy-power6 wcscpy-ppc64 \
PowerPC: multiarch wcschr for PowerPC64
2013-12-13 19:51:36 +00:00
CFLAGS-wcschr-power7.c += -mcpu=power7
CFLAGS-wcschr-power6.c += -mcpu=power6
PowerPC: multiarch wcsrchr for PowerPC64
2013-12-13 19:52:48 +00:00
CFLAGS-wcsrchr-power7.c += -mcpu=power7
CFLAGS-wcsrchr-power6.c += -mcpu=power6
PowerPC: multiarch wcscpy for PowerPC64.
2013-12-13 19:53:25 +00:00
CFLAGS-wcscpy-power7.c += -mcpu=power7
CFLAGS-wcscpy-power6.c += -mcpu=power6
PowerPC: multiarch memcpy for PowerPC64
2013-12-13 19:31:41 +00:00
endif
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