[all-commits] [llvm/llvm-project] 547e40: Revert "[FileCheck] llvm::Optional => std::optional"

[dyung via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 547e40a91b1e8e92add955a95a286999107c9196
      https://github.com/llvm/llvm-project/commit/547e40a91b1e8e92add955a95a286999107c9196
  Author: Douglas Yung <douglas.yung at sony.com>
  Date:   2022-12-14 (Wed, 14 Dec 2022)

  Changed paths:
    M llvm/lib/FileCheck/FileCheck.cpp
    M llvm/lib/FileCheck/FileCheckImpl.h
    M llvm/unittests/FileCheck/FileCheckTest.cpp

  Log Message:
  -----------
  Revert "[FileCheck] llvm::Optional => std::optional"

This reverts commit 13fd37c931c26ec07613dcad67b5ab2a593cd416.

This change is causing bot failures on some Windows and older GCC bots:
- https://lab.llvm.org/buildbot/#/builders/123/builds/14678
- https://lab.llvm.org/buildbot/#/builders/216/builds/14436
- https://lab.llvm.org/staging/#/builders/235/builds/993