[flang-commits] [clang] [flang] [mlir] Add basic -mtune support (PR #98517)

[Alexis Perry-Holby via flang-commits]

AlexisPerry wrote:

@banach-space If this PR is indeed ready to go, would you mind committing it on my behalf?  I don't have commit privileges any more.  Thanks so much for all your help!  And thanks to all the reviewers on previous versions of this PR as well!

https://github.com/llvm/llvm-project/pull/98517