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archived-llvm/test/CodeGen/SystemZ
Nikita Popov bbb1b4ffaf [SystemZ] Fix addcarry of addcarry of const carry (PR42606)
This fixes https://bugs.llvm.org/show_bug.cgi?id=42606 by extending
D64213. Instead of only checking if the carry comes from a matching
operation, we now check the full chain of carries. Otherwise we might
custom lower the outermost addcarry, but then generically legalize
an inner addcarry.

Differential Revision: https://reviews.llvm.org/D64658

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@365949 91177308-0d34-0410-b5e6-96231b3b80d8
2019-07-12 20:03:34 +00:00
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