[all-commits] [llvm/llvm-project] 51b685: [Transforms, CodeGen] std::optional::value => opera...

[Fangrui Song via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 51b685734b0e185bca9d0eec66b3bcb636ed9c02
      https://github.com/llvm/llvm-project/commit/51b685734b0e185bca9d0eec66b3bcb636ed9c02
  Author: Fangrui Song <i at maskray.me>
  Date:   2022-12-16 (Fri, 16 Dec 2022)

  Changed paths:
    M llvm/lib/CodeGen/AssignmentTrackingAnalysis.cpp
    M llvm/lib/CodeGen/ExpandVectorPredication.cpp
    M llvm/lib/CodeGen/MachineBasicBlock.cpp
    M llvm/lib/CodeGen/MachineFunctionSplitter.cpp
    M llvm/lib/CodeGen/ModuloSchedule.cpp
    M llvm/lib/CodeGen/SelectOptimize.cpp
    M llvm/lib/CodeGen/TargetInstrInfo.cpp
    M llvm/lib/Transforms/Scalar/ConstantHoisting.cpp
    M llvm/lib/Transforms/Scalar/GVN.cpp
    M llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp
    M llvm/lib/Transforms/Scalar/LoopDistribute.cpp
    M llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp
    M llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
    M llvm/lib/Transforms/Scalar/LoopUnrollAndJamPass.cpp
    M llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp

  Log Message:
  -----------
  [Transforms,CodeGen] std::optional::value => operator*/operator->

value() has undesired exception checking semantics and calls
__throw_bad_optional_access in libc++. Moreover, the API is unavailable without
_LIBCPP_NO_EXCEPTIONS on older Mach-O platforms (see
_LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS).