[flang-commits] [flang] [Flang] Legalize the hlfir.exactly_once operation (PR #152202)

[Slava Zakharin via flang-commits]

vzakhari wrote:

Thank you for the changes, but I think this is not the right place to fix this.  I believe all `hlfir.exactly_once` operations are expected to disappear after `LowerHLFIROrderedAssignments` pass.  Let me look deeper into it.

https://github.com/llvm/llvm-project/pull/152202