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Nikita Popov
7883e760b4
Fixes issue reported by aemerson on D57348. Vector op legalization support is added for uaddo, usubo, saddo and ssubo (umulo and smulo were already supported). As usual, by extracting TargetLowering methods and calling them from vector op legalization. Vector op legalization doesn't really deal with multiple result nodes, so I'm explicitly performing a recursive legalization call on the result value that is not being legalized. There are some existing test changes because expansion happens earlier, so we don't get a DAG combiner run in between anymore. Differential Revision: https://reviews.llvm.org/D61692 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@361166 91177308-0d34-0410-b5e6-96231b3b80d8
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