Driver: Add Option::getId and Option::matches taking an option
identifier; we will want to use the latter in situations where we just
want to check for a match, but not load options unnecessarily.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66757 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed