[all-commits] [llvm/llvm-project] d48531: [TargetLowering] Emit SIGN_EXTEND_INREG instead of...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d485317357376ba6335fe7116efec8edcebd689c
      https://github.com/llvm/llvm-project/commit/d485317357376ba6335fe7116efec8edcebd689c
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2024-02-15 (Thu, 15 Feb 2024)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp

  Log Message:
  -----------
  [TargetLowering] Emit SIGN_EXTEND_INREG instead of shift pair from optimizeSetCCOfSignedTruncationCheck. (#81785)

sext_inreg is our canonical form of shift pair before op legalization so
DAG combiner will probably create it anyway. If it isn't legal
LegalizeDAG will expand to shifts later.