[PATCH] D73064: [LoopCacheAnalysis]: Add support for negative stride

[Rachel Craik via Phabricator via llvm-commits]

rcraik created this revision.
rcraik added reviewers: kbarton, jdoerfert, Meinersbur, bmahjour, etiotto, Whitney.
Herald added subscribers: llvm-commits, jsji, hiraditya, nemanjai.
Herald added a project: LLVM.

LoopCacheAnalysis currently assumes the loop will be iterated over in
a forward direction. This patch addresses the issue by using the
absolute value of the stride when iterating backwards.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D73064

Files:
  llvm/lib/Analysis/LoopCacheAnalysis.cpp
  llvm/test/Analysis/LoopCacheAnalysis/PowerPC/compute-cost.ll

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