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Sanjay Patel
080999b5bb
I'm not too familiar with this pass, so there might be a better solution, but this appears to fix the degenerate: PR40930 PR40931 PR40932 PR40934 ...without affecting any real-world code. As we've seen in several other passes, when we have unreachable blocks, they can contain semi-bogus IR and/or cause unexpected conditions. We would not typically expect these patterns to make it this far, but we have to guard against them anyway. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@355337 91177308-0d34-0410-b5e6-96231b3b80d8
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