Razvan Lupusoru ddffc04385 [flang][acc] Add ACCDeclareActionConversion pass (#181894) ...

Implements the allocation and deallocation semantics for allocatables
and pointers in declare directives (OpenACC 3.4, Section 2.13.2). For a
non-shared memory device, allocate/deallocate must keep local and device
memory in sync.

Lowering generates recipe functions (with acc dialect ops to create the
device copy) and attaches an attribute to the operations that allocate
or deallocate the object. This pass finds those operations and inserts
calls to the corresponding recipe.

Example: for "!$acc declare create(arr)" and "allocate(arr(100))" in a
subroutine, the pass inserts a call to the post-alloc recipe after the
store so the device copy is created.

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Co-authored-by: Susan Tan <zujunt@nvidia.com>

2026-02-18 14:10:56 -08:00

21 KiB

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