[all-commits] [llvm/llvm-project] 253712: Follow-up to D105207, only salvage affine SCEVs to...

[Jeremy Morse via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2537120c870c04893636f171f553024f378c2de8
      https://github.com/llvm/llvm-project/commit/2537120c870c04893636f171f553024f378c2de8
  Author: Jeremy Morse <jeremy.morse at sony.com>
  Date:   2021-07-29 (Thu, 29 Jul 2021)

  Changed paths:
    M llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp

  Log Message:
  -----------
  Follow-up to D105207, only salvage affine SCEVs to avoid a crash

SCEVToIterCountExpr only expects to be fed affine expressions, but
DbgRewriteSalvageableDVIs is feeding it non-affine induction variables.
Following this up with an obvious fix, will add test coverage too if
this avoids D105207 being reverted.