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| author | Stefan Liebler <stli@linux.ibm.com> | 2019-03-22 11:14:08 +0100 |
|---|---|---|
| committer | Stefan Liebler <stli@linux.ibm.com> | 2019-03-22 11:14:08 +0100 |
| commit | 6f47401bd5fc71209219779a0426170a9a7395b0 (patch) | |
| tree | 2051a4e99c19afffe4e58521aca5bded7c913a73 /sysdeps/s390/strstr-vx.c | |
| parent | 96fbb9a328232e42814334d6e29a9a9c7995c01d (diff) | |
| download | glibc-6f47401bd5fc71209219779a0426170a9a7395b0.tar.gz | |
S390: Add arch13 strstr ifunc variant.
This patch introduces the new arch13 ifunc variant for strstr.
For needles longer than 9 charachters 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 strstr-arch13.
* sysdeps/s390/ifunc-strstr.h (HAVE_STRSTR_ARCH13, STRSTR_ARCH13,
STRSTR_Z13_ONLY_USED_AS_FALLBACK, HAVE_STRSTR_IFUNC_AND_ARCH13_SUPPORT):
New defines.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Add ifunc variant for arch13 strstr.
* sysdeps/s390/strstr-arch13.S: New file.
* sysdeps/s390/strstr-vx.c: Omit GI symbol for z13 strstr ifunc variant
if it is only used as fallback.
* sysdeps/s390/strstr.c (strstr): Add arch13 variant in ifunc selector.
Diffstat (limited to 'sysdeps/s390/strstr-vx.c')
| -rw-r--r-- | sysdeps/s390/strstr-vx.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sysdeps/s390/strstr-vx.c b/sysdeps/s390/strstr-vx.c index 275263952e..6adffdaaff 100644 --- a/sysdeps/s390/strstr-vx.c +++ b/sysdeps/s390/strstr-vx.c @@ -19,11 +19,11 @@ #include <ifunc-strstr.h> #if HAVE_STRSTR_Z13 -# if HAVE_STRSTR_IFUNC +# if HAVE_STRSTR_IFUNC || STRSTR_Z13_ONLY_USED_AS_FALLBACK # define STRSTR STRSTR_Z13 # if defined SHARED && IS_IN (libc) # undef libc_hidden_builtin_def -# if HAVE_STRSTR_C +# if HAVE_STRSTR_C || STRSTR_Z13_ONLY_USED_AS_FALLBACK # define libc_hidden_builtin_def(name) # else # define libc_hidden_builtin_def(name) \ |