[PATCH] D136922: [AMDGPU][GISel] Widen s16 SHUFFLE_VECTOR where there are no scalar pack insts

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


================
Comment at: llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp:1555
+  if (!ST.hasScalarPackInsts())
+    ShuffleVector.minScalarOrElt(0, S32);
+  ShuffleVector.lower();
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I thought you were moving towards not using shuffle_vector for packed cases too.

Plus the packed cases still need handling for non-16 bit elements 


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D136922/new/

https://reviews.llvm.org/D136922