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authorH.J. Lu <hjl.tools@gmail.com>2021-03-05 07:26:42 -0800
committerH.J. Lu <hjl.tools@gmail.com>2021-03-29 07:40:17 -0700
commit7ebba91361badf7531d4e75050627a88d424872f (patch)
treed99781a37b47b95441ad358d119ec3741960d405 /sysdeps/x86
parent91264fe3577fe887b4860923fa6142b5274c8965 (diff)
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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.
Diffstat (limited to 'sysdeps/x86')
0 files changed, 0 insertions, 0 deletions