tree c1a3a16b5f004397c943f76ccb0f5b224a1ae928
parent ae416a5f93c7892a9dce2d607fc2479eabbacd70
author Keith Randall <khr@golang.org> 1635974856 -0700
committer Keith Randall <khr@golang.org> 1635983866 +0000

cpu: pretend AVX-512 is disabled on Darwin

Darwin doesn't save/restore the AVX-512 mask registers when
processing a signal. Go generates lots of signals, which cause
the mask registers to randomly get clobbered. Better to pretend
that AVX-512 isn't supported.

Update golang/go#49233

Change-Id: I0dda77a6f205e10eefccd82e6f4f0f184dae42d9
Reviewed-on: https://go-review.googlesource.com/c/sys/+/361255
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Martin Möhrmann <martin@golang.org>