[PATCH] D63560: AMDGPU: Treat undef as an inline immediate

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
arsenm added a reviewer: rampitec.
Herald added subscribers: t-tye, tpr, dstuttard, yaxunl, nhaehnle, wdng, jvesely, kzhuravl.

This should only matter in vectors with an undef component, since a
full undef vector would have been folded out.


https://reviews.llvm.org/D63560

Files:
  lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp
  lib/Target/AMDGPU/SIInstrInfo.td
  test/CodeGen/AMDGPU/shrink-add-sub-constant.ll

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