[PATCH] D156832: [GlobalISel] Handle trunc(sext x) in artifact combiner

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


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Comment at: llvm/include/llvm/CodeGen/GlobalISel/LegalizationArtifactCombiner.h:240
 
     // Try to fold trunc(g_constant) when the smaller constant type is legal.
     auto *SrcMI = MRI.getVRegDef(SrcReg);
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Can we start moving all of this into ArtifactValueFinder instead of incrementally finding every permutation of casts?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D156832/new/

https://reviews.llvm.org/D156832