[PATCH] D74733: AMDGPU/GlobalISel: Refine G_TRUNC legality rules

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
arsenm added reviewers: nhaehnle, kerbowa, foad.
Herald added subscribers: hiraditya, t-tye, tpr, dstuttard, rovka, yaxunl, wdng, jvesely, kzhuravl.
Herald added a project: LLVM.
arsenm added a parent revision: D74714: GlobalISel: Implement fewerElementsVector for G_TRUNC.

Scalarize most truncates. Avoid touching cases that could end up in
unresolvable infinite loops.


https://reviews.llvm.org/D74733

Files:
  llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
  llvm/test/CodeGen/AMDGPU/GlobalISel/artifact-combiner-unmerge-values.mir
  llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-fcopysign.mir
  llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-trunc.mir

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