llvm-project

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History

[flang][OpenMP] Move reductions from loop to teams when loop is mapped to distribute (#132920 )

Follow-up to #132003, in particular, see
https://github.com/llvm/llvm-project/pull/132003#issuecomment-2739701936.

This PR extends reduction support for `loop` directives. Consider the
following scenario:
```fortran
subroutine bar
  implicit none
  integer :: x, i

  !$omp teams loop reduction(+: x)
  DO i = 1, 5
    call foo()
  END DO
end subroutine
```
Note the following:
* According to the spec, the `reduction` clause will be attached to
`loop` during earlier stages in the compiler.
* Additionally, `loop` cannot be mapped to `distribute parallel for` due
to the call to a foreign function inside the loop's body.
* Therefore, `loop` must be mapped to `distribute`.
* However, `distribute` does not have `reduction` clauses.
* As a result, we have to move the `reduction`s from the `loop` to its
parent `teams` directive, which is what is done by this PR.

2025-04-04 06:20:51 +02:00

Decimal

[Flang] Don't use FortranDecimal for runtime (#121997 )

2025-02-07 11:43:31 +01:00

Evaluate

[flang][intrinsics] Implement the time intrinsic (#133823 )

2025-04-03 15:33:40 -07:00

Frontend

[flang] Added driver options for arrays repacking. (#134002 )

2025-04-03 10:43:28 -07:00

FrontendTool

[flang] Support linking to MLIR dylib (#120966 )