[PATCH] D62162: Fix register coalescer failure to prune value

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


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Comment at: test/CodeGen/AMDGPU/coalescer-subranges-prune-kill-copy.mir:12
+---
+name:            test
+tracksRegLiveness: true
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rampitec wrote:
> arsenm wrote:
> > Can you reduce this more? You shouldn't need all of these blocks
> I do not see how. This is bugpoint reduced on the IR level, and then bugpoint does not work with MIR yet. A manual reduce will be a nightmare.
Yes, I've done it many times. It's not that bad. It's fairly easy to eliminate the blocks, and then slows down inside the blocks


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  https://reviews.llvm.org/D62162/new/

https://reviews.llvm.org/D62162