 Nikita Popov
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95c68f1139
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[SystemZ] Fix addcarry of usubo (PR42512)
Only custom lower uaddo+addcarry or usubo+subcarry chains and leave
mixtures like usubo+addcarry or uaddo+subcarry to the generic
legalizer. Otherwise we run into issues because SystemZ uses
different CC values for carries and borrows.
Fixes https://bugs.llvm.org/show_bug.cgi?id=42512.
Differential Revision: https://reviews.llvm.org/D64213
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@365242 91177308-0d34-0410-b5e6-96231b3b80d8
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2019-07-05 20:35:11 +00:00 |
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