[all-commits] [llvm/llvm-project] 846d06: [DAG] `tryToFoldExtendOfConstant()`: `sext undef` ...

[Roman Lebedev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 846d06c7078585c337937838ff468efba3591621
      https://github.com/llvm/llvm-project/commit/846d06c7078585c337937838ff468efba3591621
  Author: Roman Lebedev <lebedev.ri at gmail.com>
  Date:   2023-01-04 (Wed, 04 Jan 2023)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
    M llvm/test/CodeGen/X86/fold-vector-sext-zext.ll

  Log Message:
  -----------
  [DAG] `tryToFoldExtendOfConstant()`: `sext undef` is not `undef`

https://alive2.llvm.org/ce/z/cLGpWV, but https://alive2.llvm.org/ce/z/TGNH4P