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It turns out that in most cases (the main exception being i1-related types) once these operations are formed we cannot separate them and the targets end up having to deal with them whether they want to or not. This is not a good situation, and a more reasonable default can be formed by ackowledging this and having targets leave them as Legal. Only x86 seems to be affected (other targets don't even try marking the operation Expand). Mostly there's no visible change here yet, but it will be useful to have truly expanded EXTLOADS for MVT::f16 softening support. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213162 91177308-0d34-0410-b5e6-96231b3b80d8
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