[flang-commits] [clang] [flang] [llvm] [Passes] Port -print-pipeline-passes to PassesOptions (PR #230220)

[Fangrui Song via flang-commits]

MaskRay wrote:

> I take it that supporting the existing option is too much effort? Do we have other options that have a similar structure?
> 
> If this is the single outlier, LGTM. If there are others, we might want to look whether supporting this is reasonably possible.

Keeping existing  `-print-pipeline-passes[=text|tree]`  is feasible. Added `FlagOrEnumField` for that.

https://github.com/llvm/llvm-project/pull/230220