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a1b821fac9
There is no suitable basic block to sink instructions in loops without exits. The only way an instruction in a loop without exits can be used is as an incoming value to a PHI. In such cases, the incoming block for the corresponding value is unreachable. This fixes PR24013. Differential Revision: http://reviews.llvm.org/D10903 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241987 91177308-0d34-0410-b5e6-96231b3b80d8