[all-commits] [llvm/llvm-project] 4e9b76: [OpenACC][CIR] 'declare' lowering for globals/ns/s...

[Erich Keane via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4e9b76e23b29a0576c0b950e06daa2f2a84c1b65
      https://github.com/llvm/llvm-project/commit/4e9b76e23b29a0576c0b950e06daa2f2a84c1b65
  Author: Erich Keane <ekeane at nvidia.com>
  Date:   2025-11-25 (Tue, 25 Nov 2025)

  Changed paths:
    M clang/lib/CIR/CodeGen/CIRGenDeclOpenACC.cpp
    M clang/lib/CIR/CodeGen/CIRGenModule.cpp
    M clang/lib/CIR/CodeGen/CIRGenModule.h
    M clang/lib/CIR/CodeGen/CIRGenOpenACCClause.cpp
    A clang/lib/CIR/CodeGen/CIRGenOpenACCHelpers.h
    M clang/test/CIR/CodeGenOpenACC/declare-create.cpp
    M clang/test/CIR/CodeGenOpenACC/openacc-not-implemented-global.cpp
    R clang/test/CIR/CodeGenOpenACC/openacc-not-implemented.cpp

  Log Message:
  -----------
  [OpenACC][CIR] 'declare' lowering for globals/ns/struct-scopes (+create) (#169409)

This patch does the lowering for a 'declare' construct that is not a
function-local-scope. It also does the lowering for 'create', which has
an entry-op of create and exit-op of delete.

Global/NS/Struct scope 'declare's emit a single 'acc_ctor' and
'acc_dtor' (except in the case of 'link') per variable referenced. The
ctor is the entry op followed by a declare_enter. The dtor is a
get_device_ptr, followed by a declare_exit, followed by a delete(exit
op). This DOES include any necessary bounds.

This patch implements all of the above. We use a separate 'visitor' for
the clauses here since it is particularly different from the other uses,
AND there are only 4 valid clauses. Additionally, we had to split the
modifier conversion into its own 'helpers' file, which will hopefully
get some additional use in the future.



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