glibc/sysdeps/x86_64/multiarch/strncmp-avx2-rtm.S

#define STRCMP	__strncmp_avx2_rtm
#define USE_AS_STRNCMP 1
#define OVERFLOW_STRCMP	__strcmp_avx2_rtm
#include "strcmp-avx2-rtm.S"
x86-64: Add AVX optimized string/memory functions for RTM Since VZEROUPPER triggers RTM abort while VZEROALL won't, select AVX optimized string/memory functions with xtest jz 1f vzeroall ret 1: vzeroupper ret at function exit on processors with usable RTM, but without 256-bit EVEX instructions to avoid VZEROUPPER inside a transactionally executing RTM region. 2021-03-05 15:26:42 +00:00			`#define STRCMP __strncmp_avx2_rtm`
			`#define USE_AS_STRNCMP 1`
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> (cherry picked from commit c6272098323153db373f2986c67786ea8c85f1cf) 2022-02-15 14:18:15 +00:00			`#define OVERFLOW_STRCMP __strcmp_avx2_rtm`
x86-64: Add AVX optimized string/memory functions for RTM Since VZEROUPPER triggers RTM abort while VZEROALL won't, select AVX optimized string/memory functions with xtest jz 1f vzeroall ret 1: vzeroupper ret at function exit on processors with usable RTM, but without 256-bit EVEX instructions to avoid VZEROUPPER inside a transactionally executing RTM region. 2021-03-05 15:26:42 +00:00			`#include "strcmp-avx2-rtm.S"`