[all-commits] [llvm/llvm-project] fda9a9: [X86][Codegen] Remove dead code for ADCX/ADOX

[KanRobert via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: fda9a9c61ebf4f768ad0a230141fb4123128697f
      https://github.com/llvm/llvm-project/commit/fda9a9c61ebf4f768ad0a230141fb4123128697f
  Author: Shengchen Kan <shengchen.kan at intel.com>
  Date:   2023-08-14 (Mon, 14 Aug 2023)

  Changed paths:
    M llvm/lib/Target/X86/X86FlagsCopyLowering.cpp
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/lib/Target/X86/X86InstrInfo.cpp
    R llvm/test/CodeGen/X86/adx-commute.mir
    M llvm/test/CodeGen/X86/flags-copy-lowering.mir
    R llvm/test/CodeGen/X86/stack-folding-adx.mir

  Log Message:
  -----------
  [X86][Codegen] Remove dead code for ADCX/ADOX

There is no pattern for ADCX/ADOX and they are never selected during
ISEL. So we remove the cases in some MIR optimizations in this patch.

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D157717