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18e1269d26
Add the following pattern to TryToUnfoldSelectInCurrBB() bb: %p = phi [0, %bb1], [1, %bb2], [0, %bb3], [1, %bb4], ... %c = cmp %p, 0 %s = select %c, trueval, falseval The Select in the above pattern will be unfolded and then jump-threaded. The current implementation does not allow CMP in the middle of PHI and Select. Differential Revision: https://reviews.llvm.org/D34762 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@308050 91177308-0d34-0410-b5e6-96231b3b80d8