K 10
svn:author
V 3
dim
K 8
svn:date
V 27
2021-12-25T12:03:45.951001Z
K 7
svn:log
V 789
Fix clang's internal assembler adding unwanted prefix to VIA xstore

Merge commit 2d8c18fbbdd1 from llvm git (by Jessica Clarke):

  [X86] Don't add implicit REP prefix to VIA PadLock xstore

  Commit 8fa3e8fa1492 added an implicit REP prefix to all VIA PadLock
  instructions, but GNU as doesn't add one to xstore, only all the others.
  This resulted in a kernel panic regression in FreeBSD upon updating to
  LLVM 11 (https://bugs.freebsd.org/259218) which includes the commit in
  question. This partially reverts that commit.

  Reviewed By: craig.topper

  Differential Revision: https://reviews.llvm.org/D112355

MFC after:	3 days

(cherry picked from commit 4b9725184e315596aa401cecb230033c6d6d5f29)

Git Hash:   2cd533b0af50e0bc24ef034ecfe2c679d51426b4
Git Author: dim@FreeBSD.org
END