[PATCH] D61612: [NewPassManager] Add tuning option: ForgetAllSCEVInLoopUnroll [NFC].

[Alina Sbirlea via Phabricator via llvm-commits]

asbirlea added a comment.

It is currently turned on by default for Halide, which is still using the old pass manager. It makes a big difference for them in compile times, so switching them to the new pass manager will cause regressions without this flag (see https://github.com/halide/Halide/blob/master/src/CodeGen_LLVM.cpp#L1218).

Alternatively, we could enable it by default, since it benefits clang as well (see timings in D60144 <https://reviews.llvm.org/D60144>).

I don't have a preference either way.


Repository:
  rL LLVM

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  https://reviews.llvm.org/D61612/new/

https://reviews.llvm.org/D61612