[PATCH] D59363: [SelectionDAG] Add icmp UNDEF handling to SelectionDAG::FoldSetCC

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon updated this revision to Diff 191281.
RKSimon added a comment.

Updated undef behaviour to match llvm::ConstantFoldCompareInstruction (see D59541 <https://reviews.llvm.org/D59541> as well).


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D59363/new/

https://reviews.llvm.org/D59363

Files:
  lib/CodeGen/SelectionDAG/SelectionDAG.cpp
  test/CodeGen/AArch64/urem-seteq-vec-nonsplat.ll
  test/CodeGen/SPARC/missinglabel.ll
  test/CodeGen/X86/2006-11-17-IllegalMove.ll
  test/CodeGen/X86/avx512-insert-extract.ll
  test/CodeGen/X86/hoist-spill.ll
  test/CodeGen/X86/select.ll
  test/CodeGen/X86/tail-dup-merge-loop-headers.ll
  test/CodeGen/X86/tail-dup-repeat.ll
  test/CodeGen/X86/undef-ops.ll
  test/CodeGen/X86/urem-seteq-vec-nonsplat.ll
  test/CodeGen/X86/vector-shift-ashr-sub128-widen.ll
  test/CodeGen/X86/vector-shift-lshr-sub128-widen.ll

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