[flang-commits] [flang] [flang][openmp]Add UserReductionDetails and use in DECLARE REDUCTION (PR #140066)

Thu May 15 07:28:31 PDT 2025

https://github.com/tblah created https://github.com/llvm/llvm-project/pull/140066

This adds another puzzle piece for the support of OpenMP DECLARE REDUCTION functionality.

This adds support for operators with derived types, as well as declaring multiple different types with the same name or operator.

A new detail class for UserReductionDetials is introduced to hold the list of types supported for a given reduction declaration.

Tests for parsing and symbol generation added.

Declare reduction is still not supported to lowering, it will generate a "Not yet implemented" fatal error.

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