[PATCH] D105207: [debuginfo][lsr] SCEV-based salvaging for LoopStrengthReduction

[Chris Jackson via Phabricator via llvm-commits]

chrisjackson updated this revision to Diff 416852.
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A WIP update only, not ready for a re-review. Incorporated some of @StephenTozer 's suggestions e.g.

- replacing densemap with vector (though this still needs to be done for the location-op index)
- making use of unique_ptr, though this had some knock-on effects on other structures
- Simplified a branch in UpdateDbgValueInst

There are still several changes to make.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D105207/new/

https://reviews.llvm.org/D105207

Files:
  llvm/include/llvm/Analysis/ScalarEvolution.h
  llvm/lib/Analysis/ScalarEvolution.cpp
  llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
  llvm/test/Transforms/LoopStrengthReduce/debuginfo-scev-salvage-5.ll

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