[all-commits] [llvm/llvm-project] 2916b9: [ADT] Alias llvm::Optional to std::optional

[Benjamin Kramer via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2916b99182752b1aece8cc4479d8d6a20b5e02da
      https://github.com/llvm/llvm-project/commit/2916b99182752b1aece8cc4479d8d6a20b5e02da
  Author: Benjamin Kramer <benny.kra at googlemail.com>
  Date:   2022-12-20 (Tue, 20 Dec 2022)

  Changed paths:
    M clang/include/clang/Basic/LLVM.h
    M clang/lib/StaticAnalyzer/Core/ExprEngine.cpp
    M flang/include/flang/Lower/Runtime.h
    M lldb/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp
    M lldb/source/Symbol/Type.cpp
    M llvm/include/llvm/ADT/Optional.h
    M llvm/include/llvm/ADT/STLForwardCompat.h
    M llvm/include/llvm/Support/raw_ostream.h
    M llvm/include/llvm/Testing/Support/SupportHelpers.h
    M llvm/lib/CodeGen/RegAllocGreedy.h
    M llvm/unittests/ADT/CMakeLists.txt
    R llvm/unittests/ADT/OptionalTest.cpp
    M llvm/unittests/Support/TypeTraitsTest.cpp
    M mlir/include/mlir/Bindings/Python/PybindAdaptors.h
    M mlir/include/mlir/Support/LLVM.h
    M mlir/lib/Bindings/Python/PybindUtils.h
    M mlir/lib/Dialect/GPU/Transforms/SerializeToHsaco.cpp

  Log Message:
  -----------
  [ADT] Alias llvm::Optional to std::optional

This avoids the continuous API churn when upgrading things to use
std::optional and makes trivial string replace upgrades possible.

I tested this with GCC 7.5, the oldest supported GCC I had around.

Differential Revision: https://reviews.llvm.org/D140332