TheRock/compiler/amd-llvm/flang/docs/MeetingNotes/2026/2026-02-25.md

Combined Call 2026-02-25

Agenda

• Design docs and/or RFCs

  • [RFC] Proposed wording for a description of Flang for the LLVM home page
    • This came out of a suggestion on the last call.
    • The initial wording has been tweaked some, now it is last call for comments and tweaks before Tarun submits the wording.
  • [RFC] Runtime for Parameterized Derived Types with LEN type parameters
    • Related PR: https://github.com/llvm/llvm-project/pull/181008
    • The PR received feedback, some open questions remain and the authors are working through them
    • Dan Bonachea: What does this imply for multi-image?
  • [Flang][Affine] Linearized array access in -promote-to-affine causes false dependence and blocks loop tiling
    • Several paths forward have been suggested, please comment on the post to help guide this new contributor
  • Make hlfir.forall can contain PureOp
    • Related PR: https://github.com/llvm/llvm-project/pull/180556
  • [RFC] Adding conditional expressions in Flang (F2023)
    • PR should be up for review shortly
  • [RFC] Warning suppression policy
    • Related PR: https://github.com/llvm/llvm-project/pull/174918
    • Regarding a false positive from gcc and how to address an issue related to zero initialization and possible undefined behavior
    • Proposed change of disabling warnings for faulty gcc versions globally, this could reduce the maintenance burden
  • Cross-compilation of real(kind=16)
    • Related PR: https://github.com/llvm/llvm-project/pull/182230
    • Reviewers needed
  • Changes to builtin modules
    • Waiting on more details from reviewer
  • `-ffp-contract=fast` Violates the Fortran Standard
    • Peter Klausler has “requested a formal interpretation to clarify the extent to which the long-standing guarantee of ‘the integrity of parentheses’ applies to a parenthesized real intrinsic multiplication in ISO Fortran.” Awaiting response.
    • The document in question is https://j3-fortran.org/doc/year/26/26-115r2.txt
      • Someone needs to champion the paper on the floor of the committee to force a discussion
      • Would be best if someone from the US or another convenient time zone could take this on. NVIDIA’s Mark LeAir? Ted Johnson as alternate.

• PRs of Note

  • Pass for support for OpenMP and NVIDIA offload
    • https://github.com/llvm/llvm-project/pull/180060
    • In need of reviewers on the Flang side
    • MLIR PR has been merged
  • [flang] Add runtime trampoline pool for W^X compliance#183108
    • Slava will take a look
  • Support for rank-1 integer array expressions in declarations and allocate statements
    • https://github.com/llvm/llvm-project/pull/183193
    • Looking at breaking the PR into smaller patches, but needs discussion about how best to design it. Reviewers needed.

• Issues of Note

  • None at this time

• FYI

  • 2026 EuroLLVM - Early Bird Pricing Ends Soon (March 1st)
  • New Flang Liason report to J3: https://discourse.llvm.org/t/flang-liaison-report-to-j3/68468/11
  • LLVM 22.1.0 Released!

• Other topics as time allows
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