[PATCH] D51589: DAG: Fold extract_vector_elt (scalar_to_vector), K to undef

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon updated this revision to Diff 221327.
RKSimon added a comment.

rebase - still need to fix the extract subvector regression


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D51589/new/

https://reviews.llvm.org/D51589

Files:
  lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  test/CodeGen/AMDGPU/cvt_f32_ubyte.ll
  test/CodeGen/AMDGPU/max.i16.ll

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