[PATCH] D116187: [AMDGPU] Select build_vector DAG nodes according to the divergence

[Alexander via Phabricator via llvm-commits]

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This change enables divergence-driven instruction selection for the build_vector DAG nodes.

  It also enables packed i16 instructions for GFX9.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D116187

Files:
  llvm/lib/Target/AMDGPU/SIInstructions.td
  llvm/test/CodeGen/AMDGPU/divergence-driven-buildvector.ll
  llvm/test/CodeGen/AMDGPU/idot8s.ll
  llvm/test/CodeGen/AMDGPU/vector_shuffle.packed.ll

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