Files
llvm/test/CodeGen/SystemZ
Marcin Koscielnicki 9100579a4f [PR27599] [SystemZ] [SelectionDAG] Fix extension of atomic cmpxchg result.
Currently, SelectionDAG assumes 8/16-bit cmpxchg returns either a sign
extended result, or a zero extended result.  SystemZ takes a third
option by returning junk in the high bits (rotated contents of the other
bytes in the memory word).  In that case, don't use Assert*ext, and
zero-extend the result ourselves if a comparison is needed.

Differential Revision: http://reviews.llvm.org/D19800

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@269075 91177308-0d34-0410-b5e6-96231b3b80d8
2016-05-10 16:49:04 +00:00
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