[PATCH] D60144: [SCEV] Add option to forget everything in SCEV.

[Alina Sbirlea via Phabricator via llvm-commits]

asbirlea added a comment.

I'm looking to see if a reduced case I have can be open-sourced in a PR and have this patch point to it.

I tried to reduce the problem (bugpoint) before sending this out, hoping it would show some pathological case that it hits in SCEV, but it didn't seem to be the case. For the problem to persist, the testcase needs to remain very large, which seems to confirm the comment on `forgetLoop`: `This call is potentially expensive for large loop bodies.`.


Repository:
  rL LLVM

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  https://reviews.llvm.org/D60144/new/

https://reviews.llvm.org/D60144