[flang-commits] [flang] [flang][openmp]Add UserReductionDetails and use in DECLARE REDUCTION (PR #131628)

[Mats Petersson via flang-commits]

Leporacanthicus wrote:

> There is a case for UserReductionDetails that has to be added while writing a module file. The following test crashes in that code.
> 
> ```
> module decl_red1
>   type t1
>     integer :: val
>   end type t1
>   interface operator(*)
>     module procedure mul
>   end interface
> !$omp declare reduction(*:t1:omp_out=omp_out*omp_in) initializer(omp_priv=t1(1))
> contains
>   type(t1) function mul(v1, v2)
>     type(t1), intent (in):: v1, v2
>     mul%val = v1%val * v2%val
>   end function
> end module
> ```

Now works, and additional test added.

https://github.com/llvm/llvm-project/pull/131628