[flang-commits] [flang] [flang][OpenMP] Clone reduction info from nested `loop` ops to parent `teams` ops (PR #132003)

[Michael Klemm via flang-commits]

mjklemm wrote:

The semantics for `teams loop reduction(op:var)` clearly needs to be that the `reduction` clause not only affects the `loop` construct, but that it performs a reduction operation across the parallel regions as well as the league of teams.  So, hoisting the `reduction` operation from `omp.loop` to `omp.teams` makes perfect sense.  I wonder, though, if this should be done when the MLIR code is first generated and not later during an MLIR pass.

https://github.com/llvm/llvm-project/pull/132003