[PATCH] D106879: GlobalISel: Fix infinite loop in legalization artifact combiner

[Amara Emerson via Phabricator via llvm-commits]

aemerson added inline comments.


================
Comment at: llvm/include/llvm/CodeGen/GlobalISel/LegalizationArtifactCombiner.h:770
         Register DefReg = MI.getReg(DefIdx);
+        if (MRI.use_empty(DefReg))
+          continue;
----------------
arsenm wrote:
> Probably should be use_nodbg_empty
If the def is dead, we should also set the dead bit in `DeadDefs`.


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https://reviews.llvm.org/D106879