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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 /sysdeps/s390/memmem-vx.c | |
| parent | 6f47401bd5fc71209219779a0426170a9a7395b0 (diff) | |
| download | glibc-421749d693c4147017bc55f5ac3227c3a6e4bf31.tar glibc-421749d693c4147017bc55f5ac3227c3a6e4bf31.tar.gz glibc-421749d693c4147017bc55f5ac3227c3a6e4bf31.tar.bz2 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/memmem-vx.c')
| -rw-r--r-- | sysdeps/s390/memmem-vx.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sysdeps/s390/memmem-vx.c b/sysdeps/s390/memmem-vx.c index 31f617346c..6b0407d0e0 100644 --- a/sysdeps/s390/memmem-vx.c +++ b/sysdeps/s390/memmem-vx.c @@ -20,7 +20,7 @@ #if HAVE_MEMMEM_Z13 # include <string.h> -# if HAVE_MEMMEM_IFUNC +# if HAVE_MEMMEM_IFUNC || MEMMEM_Z13_ONLY_USED_AS_FALLBACK # ifndef _LIBC # define memmem MEMMEM_Z13 @@ -32,7 +32,7 @@ # undef libc_hidden_def # undef libc_hidden_weak -# if HAVE_MEMMEM_C +# if HAVE_MEMMEM_C || MEMMEM_Z13_ONLY_USED_AS_FALLBACK # define libc_hidden_def(name) # define libc_hidden_weak(name) # else |