[flang-commits] [flang] [flang] Add ETIME runtime and lowering intrinsics implementation (PR #90578)

[Peter Klausler via flang-commits]

https://github.com/klausler requested changes to this pull request.

`etime` needs to be both a function and a subroutine.

https://github.com/llvm/llvm-project/pull/90578