glibc/sysdeps/x86_64/multiarch/strncat-avx2-rtm.S
H.J. Lu 7ebba91361 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.
2021-03-29 07:40:17 -07:00

4 lines
86 B
ArmAsm

#define USE_AS_STRNCAT
#define STRCAT __strncat_avx2_rtm
#include "strcat-avx2-rtm.S"