[PATCH] D110558: [DebugInfo][LoopStrengthReduction] Prevent attempts to translate long SCEV expressions

[Chris Jackson via Phabricator via llvm-commits]

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As reported in pr51656 <https://bugs.llvm.org/show_bug.cgi?id=51656> scev-based salvaging can use excessive resources to the point of crashing when large SCEV expressions are encountered. This patch places a limit on the length of expression for which an attempt to translate will be made.


https://reviews.llvm.org/D110558

Files:
  llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
  llvm/test/Transforms/LoopStrengthReduce/pr51656.ll

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