[PATCH] D104180: [NFC] [LICM] Create LoopNest Invariant Code Motion (LNICM) pass

[toshiki maekawa via Phabricator via llvm-commits]

uint256_t added a comment.

I don't introduce a lot of changes for LNICM, and reuse as much code in LICM as possible.
Some transformations really benefit from perfect loop nest. One of the examples is loop-interchange as shown in a lit test.
LICM cannot maintain perfect loop nest, so we need to add LNICM.


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  https://reviews.llvm.org/D104180/new/

https://reviews.llvm.org/D104180