diff options
| 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 /sysdeps/s390/multiarch | |
| 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 'sysdeps/s390/multiarch')
| -rw-r--r-- | sysdeps/s390/multiarch/ifunc-impl-list.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sysdeps/s390/multiarch/ifunc-impl-list.c b/sysdeps/s390/multiarch/ifunc-impl-list.c index 75289b582b..1948436417 100644 --- a/sysdeps/s390/multiarch/ifunc-impl-list.c +++ b/sysdeps/s390/multiarch/ifunc-impl-list.c @@ -202,6 +202,10 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array, #if HAVE_MEMMEM_IFUNC IFUNC_IMPL (i, name, memmem, +# if HAVE_MEMMEM_ARCH13 + IFUNC_IMPL_ADD (array, i, memmem, + dl_hwcap & HWCAP_S390_VXRS_EXT2, MEMMEM_ARCH13) +# endif # if HAVE_MEMMEM_Z13 IFUNC_IMPL_ADD (array, i, memmem, dl_hwcap & HWCAP_S390_VX, MEMMEM_Z13) |