[all-commits] [llvm/llvm-project] 748e21: [mlir][acc] Add acc declare codegen to ACCToLLVM (...

[Razvan Lupusoru via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 748e21a693d24bdd9168fa718a1a5146d414e8b2
      https://github.com/llvm/llvm-project/commit/748e21a693d24bdd9168fa718a1a5146d414e8b2
  Author: Razvan Lupusoru <razvan.lupusoru at gmail.com>
  Date:   2026-09-23 (Wed, 23 Sep 2026)

  Changed paths:
    M flang/lib/Lower/OpenACC.cpp
    M flang/lib/Optimizer/OpenACC/Transforms/ACCDeclareActionConversion.cpp
    M flang/test/Fir/OpenACC/declare-action-conversion.fir
    M flang/test/Lower/OpenACC/acc-declare-allocatable-deallocate.f90
    M flang/test/Lower/OpenACC/acc-declare-unified.f90
    M flang/test/Lower/OpenACC/acc-declare-use-associated-allocatable.f90
    M flang/test/Lower/OpenACC/acc-declare.f90
    M mlir/include/mlir/Conversion/OpenACCToLLVM/ACCToLLVM.h
    M mlir/include/mlir/Dialect/OpenACC/OpenACCRuntimeFunctions.def
    M mlir/include/mlir/Dialect/OpenACC/OpenACCRuntimeUtils.h
    M mlir/lib/Conversion/OpenACCToLLVM/ACCDataDirectivePatterns.cpp
    M mlir/lib/Dialect/OpenACC/IR/OpenACC.cpp
    M mlir/lib/Dialect/OpenACC/Utils/OpenACCRuntimeUtils.cpp
    A mlir/test/Conversion/OpenACCToLLVM/declare.mlir
    M mlir/unittests/Dialect/OpenACC/OpenACCOpsInterfacesTest.cpp

  Log Message:
  -----------
  [mlir][acc] Add acc declare codegen to ACCToLLVM (#225557)

Extends the acc to LLVM conversion with codegen for `acc declare`. A
structured declare uses the same data entry points as `acc.data`. An
unstructured declare registers its objects with `__tgt_acc_declare`. A
declare in a declare-action recipe only allocates or frees the device
mirror of an object the host already manages, through
`__tgt_acc_mirror_alloc` and `__tgt_acc_mirror_dealloc`. As with the
other directives, these runtime APIs are not yet finalized; the draft
proposal can be found at
https://github.com/llvm/llvm-project/pull/197894.

Placing the globals that a declare directive names into the device image
is not part of this change.

Co-authored-by: Matsu <kmatsumura at nvidia.com>



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