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author | Noah Goldstein <goldstein.w.n@gmail.com> | 2022-07-13 16:33:00 -0700 |
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committer | Noah Goldstein <goldstein.w.n@gmail.com> | 2022-07-16 03:07:59 -0700 |
commit | 192979ee351315b84ff4277d0985f26243717cd7 (patch) | |
tree | a62f2737cc82add1047d89ef9e89984849a6de8d /sysdeps/x86_64/multiarch/wcscpy-generic.c | |
parent | ceabdcd130ca7043b0fcf2676183d79431d10493 (diff) | |
download | glibc-192979ee351315b84ff4277d0985f26243717cd7.tar.gz glibc-192979ee351315b84ff4277d0985f26243717cd7.tar.xz glibc-192979ee351315b84ff4277d0985f26243717cd7.zip |
x86: Add support to build wcscpy with explicit ISA level
1. Add ISA level build guards to different implementations. - wcscpy-ssse3.S is used as ISA level 2/3/4. - wcscpy-generic.c is only used at ISA level 1 and will only build if compiled with ISA level == 1. Otherwise there is no reason to include it as we will always use wcscpy-ssse3.S 2. Refactor the ifunc selector and ifunc implementation list to use the ISA level aware wrapper macros that allow functions below the compiled ISA level (with a guranteed replacement) to be skipped. Tested with and without multiarch on x86_64 for ISA levels: {generic, x86-64-v2, x86-64-v3, x86-64-v4} And m32 with and without multiarch.
Diffstat (limited to 'sysdeps/x86_64/multiarch/wcscpy-generic.c')
-rw-r--r-- | sysdeps/x86_64/multiarch/wcscpy-generic.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/sysdeps/x86_64/multiarch/wcscpy-generic.c b/sysdeps/x86_64/multiarch/wcscpy-generic.c index 5ea905f33f..93d314aaad 100644 --- a/sysdeps/x86_64/multiarch/wcscpy-generic.c +++ b/sysdeps/x86_64/multiarch/wcscpy-generic.c @@ -17,8 +17,11 @@ <https://www.gnu.org/licenses/>. */ -#if IS_IN (libc) +#include <isa-level.h> + +#if ISA_SHOULD_BUILD (1) + # define WCSCPY __wcscpy_generic -#endif +# include <wcsmbs/wcscpy.c> -#include <wcsmbs/wcscpy.c> +#endif |