Florian Hahn a6549718d9
[LoopUnroll] Don't update DT for changeToUnreachable.
There is no need to update the DT here, because there must be a unique
latch. Hence if the latch is not exiting it must directly branch back
to the original loop header and does not dominate any nodes.

Skipping a DT update here simplifies D141487.

Reviewed By: nikic

Differential Revision: https://reviews.llvm.org/D141810
2023-01-16 12:25:34 +00:00
..
2022-12-14 21:16:22 -08:00