[flang-commits] [flang] a580383 - [flang] Document experimental support for multi-image features (#178011)

[via flang-commits]

Author: Dan Bonachea
Date: 2026-01-28T10:11:35-08:00
New Revision: a58038307a604096bcc2ba0e6635be339ea704b7

URL: https://github.com/llvm/llvm-project/commit/a58038307a604096bcc2ba0e6635be339ea704b7
DIFF: https://github.com/llvm/llvm-project/commit/a58038307a604096bcc2ba0e6635be339ea704b7.diff

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

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

Added: 
    

Modified: 
    flang/docs/FortranStandardsSupport.md
    flang/docs/ParallelMultiImageFortranRuntime.md

Removed: 
    


################################################################################
diff  --git a/flang/docs/FortranStandardsSupport.md b/flang/docs/FortranStandardsSupport.md
index 28fe59ac565be..f57956cd6d6b8 100644
--- a/flang/docs/FortranStandardsSupport.md
+++ b/flang/docs/FortranStandardsSupport.md
@@ -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

diff  --git a/flang/docs/ParallelMultiImageFortranRuntime.md b/flang/docs/ParallelMultiImageFortranRuntime.md
index 6dd21a420d787..f40a4274d7dee 100644
--- a/flang/docs/ParallelMultiImageFortranRuntime.md
+++ b/flang/docs/ParallelMultiImageFortranRuntime.md
@@ -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
+