[PATCH] D70097: [SCEV] Optimize SCEV cache usage

[Ehud Katz via Phabricator via llvm-commits]

ekatz created this revision.
ekatz added reviewers: sanjoy, reames, nikic, loladiro, mkazantsev.
ekatz added a project: LLVM.
Herald added subscribers: llvm-commits, javed.absar, hiraditya.

Calculating SCEVs can be cumbersome, and may take very long time (even hours, for very long expressions). To prevent recalculating expressions over and over again, we cache them.
This change improves the caching and retrieving cases.

Fix PR43571.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D70097

Files:
  llvm/include/llvm/Analysis/ScalarEvolution.h
  llvm/lib/Analysis/ScalarEvolution.cpp

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