[PATCH] D128339: [LSR] Don't allow zero quotient as scale ref. PR56160

[Max Kazantsev via Phabricator via llvm-commits]

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Scale reg should never be zero, so when the quotient is zero, we
cannot assign it there. Limit this transform to avoid this situation.


https://reviews.llvm.org/D128339

Files:
  llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
  llvm/test/Transforms/LoopStrengthReduce/pr56160.ll

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