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[flang] Document experimental support for multi-image features (#178011)

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This PR updates flang's Fortran standard conformance documentation to
reflect the recent addition of experimental support for multi-image
features.

PRs implementing that support include:
* #151675
* #154081
* #154770
* #154166
* #165573
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Dan Bonachea 2026-01-28 13:11:35 -05:00 committed by GitHub
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21
flang/docs/FortranStandardsSupport.md
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@ -67,25 +67,24 @@ the multi-image execution. The table entries are based on the document [The new
| Feature | Status | Comments |
|------------------------------------------------------------|--------|---------------------------------------------------------|
| Asynchronous communication | P | Syntax is accepted |
| Teams | N | Multi-image/Coarray feature |
| Image failure | P | Multi-image/Coarray feature. stat_failed_image is added |
| Form team statement | N | Multi-image/Coarray feature |
| Change team construct | N | Multi-image/Coarray feature |
| Collective subroutines | P | Experimental support via [PRIF](ParallelMultiImageFortranRuntime.md), missing co_reduce |
| Teams | P | Experimental support via [PRIF](ParallelMultiImageFortranRuntime.md) |
| Form team statement | P | Experimental support via [PRIF](ParallelMultiImageFortranRuntime.md) |
| Change team construct | P | Experimental support via [PRIF](ParallelMultiImageFortranRuntime.md) |
| Sync team construct | P | Experimental support via [PRIF](ParallelMultiImageFortranRuntime.md) |
| Intrinsic functions get_team and team_number | P | Experimental support via [PRIF](ParallelMultiImageFortranRuntime.md) |
| Intrinsic function image_index | P | Experimental support via [PRIF](ParallelMultiImageFortranRuntime.md) |
| Intrinsic function num_images | P | Experimental support via [PRIF](ParallelMultiImageFortranRuntime.md) |
| Intrinsic function this_image | P | Experimental support via [PRIF](ParallelMultiImageFortranRuntime.md) |
| Image failure and stat= specifiers | P | Multi-image/Coarray feature. stat_failed_image is added |
| Coarrays allocated in teams | N | Multi-image/Coarray feature |
| Critical construct | N | Multi-image/Coarray feature |
| Lock and unlock statements | N | Multi-image/Coarray feature |
| Events | N | Multi-image/Coarray feature |
| Sync team construct | N | Multi-image/Coarray feature |
| Image selectors | N | Multi-image/Coarray feature |
| Intrinsic functions get_team and team_number | N | Multi-image/Coarray feature |
| Intrinsic function image_index | N | Multi-image/Coarray feature |
| Intrinsic function num_images | N | Multi-image/Coarray feature |
| Intrinsic function this_image | N | Multi-image/Coarray feature |
| Intrinsic move_alloc extensions | P | Multi-image/Coarray feature |
| Detecting failed and stopped images | N | Multi-image/Coarray feature |
| Collective subroutines | N | Multi-image/Coarray feature |
| New and enhanced atomic subroutines | N | Multi-image/Coarray feature |
| Failed images and stat= specifiers | N | Multi-image/Coarray feature |
| Intrinsic function coshape | N | Multi-image/Coarray feature |
## Fortran 2008

5
flang/docs/ParallelMultiImageFortranRuntime.md
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@ -15,3 +15,8 @@ Fortran's multi-image parallel features.
The current revision of the PRIF specification is here:
<https://doi.org/10.25344/S46S3W>
Library implementations of PRIF include:
* [Caffeine](https://go.lbl.gov/caffeine) - portable open-source implementation targeting shared- and distributed-memory systems running Linux or macOS