[all-commits] [llvm/llvm-project] b53e0d: Use std::nullopt instead of None in comments (NFC)

[kazutakahirata via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b53e0d1b341f142e6d27e53058141d283837fbbd
      https://github.com/llvm/llvm-project/commit/b53e0d1b341f142e6d27e53058141d283837fbbd
  Author: Kazu Hirata <kazu at google.com>
  Date:   2023-01-14 (Sat, 14 Jan 2023)

  Changed paths:
    M clang/lib/Frontend/PrecompiledPreamble.cpp
    M llvm/lib/ProfileData/Coverage/CoverageMapping.cpp
    M llvm/lib/Target/AArch64/GISel/AArch64InstructionSelector.cpp
    M llvm/lib/Transforms/Scalar/LoopFuse.cpp
    M mlir/include/mlir/Dialect/Linalg/Transforms/Transforms.h
    M mlir/include/mlir/Tools/PDLL/AST/Nodes.h
    M mlir/lib/Dialect/Affine/Analysis/AffineStructures.cpp

  Log Message:
  -----------
  Use std::nullopt instead of None in comments (NFC)