[PATCH] D158068: [DAG] FoldSetCC - add missing icmp(X,undef) -> isTrueWhenEqual case

[Simon Pilgrim via Phabricator via llvm-commits]

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Followup to D59363 <https://reviews.llvm.org/D59363> which failed to handle the icmp(X,undef) -> isTrueWhenEqual case  - similar to llvm::ConstantFoldCompareInstruction


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D158068

Files:
  llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
  llvm/test/CodeGen/AArch64/pr55178.ll
  llvm/test/CodeGen/AMDGPU/swdev373493.ll
  llvm/test/CodeGen/PowerPC/p10-spill-crgt.ll
  llvm/test/CodeGen/PowerPC/pr45709.ll
  llvm/test/CodeGen/RISCV/pr64503.ll
  llvm/test/CodeGen/Thumb2/ldr-str-imm12.ll
  llvm/test/CodeGen/WebAssembly/pr59626.ll
  llvm/test/CodeGen/X86/2012-01-10-UndefExceptionEdge.ll
  llvm/test/CodeGen/X86/ragreedy-hoist-spill.ll
  llvm/test/CodeGen/X86/tail-dup-merge-loop-headers.ll
  llvm/test/CodeGen/X86/twoaddr-lea.ll
  llvm/test/CodeGen/X86/vec_int_to_fp.ll

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