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| author | Stefan Liebler <stli@linux.ibm.com> | 2019-03-22 11:14:09 +0100 |
|---|---|---|
| committer | Stefan Liebler <stli@linux.ibm.com> | 2019-03-22 11:14:09 +0100 |
| commit | 421749d693c4147017bc55f5ac3227c3a6e4bf31 (patch) | |
| tree | 54c7b37b16907efbe5459e720c38b5f9e56fa088 /ChangeLog | |
| parent | 6f47401bd5fc71209219779a0426170a9a7395b0 (diff) | |
| download | glibc-421749d693c4147017bc55f5ac3227c3a6e4bf31.tar.gz glibc-421749d693c4147017bc55f5ac3227c3a6e4bf31.tar.xz glibc-421749d693c4147017bc55f5ac3227c3a6e4bf31.zip | |
S390: Add arch13 memmem ifunc variant.
This patch introduces the new arch13 ifunc variant for memmem. For needles longer than 9 bytes it is relying on the common-code implementation. For shorter needles it is using the new vstrs instruction which is able to search a substring within a vector register. ChangeLog: * sysdeps/s390/Makefile (sysdep_routines): Add memmem-arch13. * sysdeps/s390/ifunc-memmem.h (HAVE_MEMMEM_ARCH13, MEMMEM_ARCH13, MEMMEM_Z13_ONLY_USED_AS_FALLBACK, HAVE_MEMMEM_IFUNC_AND_ARCH13_SUPPORT): New defines. * sysdeps/s390/memmem-arch13.S: New file. * sysdeps/s390/memmem-vx.c: Omit GI symbol for z13 memmem ifunc variant if it is only used as fallback. * sysdeps/s390/memmem.c (memmem): Add arch13 variant in ifunc selector. * sysdeps/s390/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Add ifunc variant for arch13 memmem.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index cd1453ecec..cf47118b78 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,18 @@ 2019-03-22 Stefan Liebler <stli@linux.ibm.com> + * sysdeps/s390/Makefile (sysdep_routines): Add memmem-arch13. + * sysdeps/s390/ifunc-memmem.h (HAVE_MEMMEM_ARCH13, MEMMEM_ARCH13, + MEMMEM_Z13_ONLY_USED_AS_FALLBACK, HAVE_MEMMEM_IFUNC_AND_ARCH13_SUPPORT): + New defines. + * sysdeps/s390/memmem-arch13.S: New file. + * sysdeps/s390/memmem-vx.c: Omit GI symbol for z13 memmem ifunc variant + if it is only used as fallback. + * sysdeps/s390/memmem.c (memmem): Add arch13 variant in ifunc selector. + * sysdeps/s390/multiarch/ifunc-impl-list.c + (__libc_ifunc_impl_list): Add ifunc variant for arch13 memmem. + +2019-03-22 Stefan Liebler <stli@linux.ibm.com> + * sysdeps/s390/Makefile (sysdep_routines): Add strstr-arch13. * sysdeps/s390/ifunc-strstr.h (HAVE_STRSTR_ARCH13, STRSTR_ARCH13, STRSTR_Z13_ONLY_USED_AS_FALLBACK, HAVE_STRSTR_IFUNC_AND_ARCH13_SUPPORT): |