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cdfe078a42
When lowering two blended PACKUS, we used to disregard the types
of the PACKUS inputs, indiscriminately generating a v16i8 PACKUS.
This leads to non-selectable things like:
(v16i8 (PACKUS (v4i32 v0), (v4i32 v1)))
Instead, check that the PACKUSes have the same type, and use that
as the final result type.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@274138 91177308-0d34-0410-b5e6-96231b3b80d8
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