[PATCH] D59626: [AMDGPU] Add MachineDCE pass after RenameIndependentSubregs

[Stanislav Mekhanoshin via Phabricator via llvm-commits]

rampitec added a comment.

In D59626#1458686 <https://reviews.llvm.org/D59626#1458686>, @bjope wrote:

>


Actually shrinkToUses does not work with phys. That should be possible to avoid removing dead phys uses if that phys is allocatable (otherwise liveness is not calculated for it).
I also do not see how to reproduce disjoint intervals.
And yes, changing it back to PreservesCFG() should effectively switch this off.


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https://reviews.llvm.org/D59626