glibc/sysdeps/x86_64/multiarch/strncmp-avx2-rtm.S
Noah Goldstein c627209832 x86: Fallback {str|wcs}cmp RTM in the ncmp overflow case [BZ #28896]
In the overflow fallback strncmp-avx2-rtm and wcsncmp-avx2-rtm would
call strcmp-avx2 and wcscmp-avx2 respectively. This would have
not checks around vzeroupper and would trigger spurious
aborts. This commit fixes that.

test-strcmp, test-strncmp, test-wcscmp, and test-wcsncmp all pass on
AVX2 machines with and without RTM.

Co-authored-by: H.J. Lu <hjl.tools@gmail.com>
2022-02-17 15:43:05 -06:00

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ArmAsm

#define STRCMP __strncmp_avx2_rtm
#define USE_AS_STRNCMP 1
#define OVERFLOW_STRCMP __strcmp_avx2_rtm
#include "strcmp-avx2-rtm.S"