MFC r274286:
Pull in r201784 from upstream llvm trunk (by Benjamin Kramer):
AsmParser: Disable Darwin-style macro argument expansion on non-darwin targets.
There is code in the wild that relies on $0 not being expanded.
This fixes some cases of using $ signs in literals being incorrectly
assembled.
Reported by: Richard Henderson
Upstream PR: http://llvm.org/PR21500
MFC r274294:
Add llvm patch corresponding to r274286.
git-svn-id: svn://svn.freebsd.org/base/stable/10@274373
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