[PATCH] D106408: Allow rematerialization of virtual reg uses

[Stanislav Mekhanoshin via Phabricator via llvm-commits]

rampitec added a comment.

@arsenm note, we are reporting that instructions with such uses are trivially materializable for a long time in case of VALU moves, and now even with more VALU instructions. We only do not so it for SALU. I think we will need to have the same check for AllowVRegs in our `isReallyTriviallyReMaterializable` to prevent LICM hoisting it under high pressure.


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  https://reviews.llvm.org/D106408/new/

https://reviews.llvm.org/D106408