[all-commits] [llvm/llvm-project] 9673aa: [flang][OpenACC] Don't hoist declare directive out...

[khaki3 via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9673aae1fc67abcab756ed3f6e36dff846e8228c
      https://github.com/llvm/llvm-project/commit/9673aae1fc67abcab756ed3f6e36dff846e8228c
  Author: khaki3 <47756807+khaki3 at users.noreply.github.com>
  Date:   2026-06-11 (Thu, 11 Jun 2026)

  Changed paths:
    M flang/lib/Lower/PFTBuilder.cpp
    A flang/test/Lower/OpenACC/acc-declare-interface-body.f90

  Log Message:
  -----------
  [flang][OpenACC] Don't hoist declare directive out of interface bodies (#202806)

Example:
```fortran
program main
  real :: a(10, 60)
  interface
    subroutine compute(a)
      real :: a(10, 60)
!$acc declare present(a)
    end subroutine
  end interface
  call compute(a)
end program
```

In this code, the `!$acc declare` inside the interface body is hoisted
into the
host program unit and lowered there, where its operand (the interface
dummy)
has no IR value, so lowering aborts with "symbol is not mapped to any IR
value".
This happens because interface-body procedures are not function-like
units, so
the directive is appended to the enclosing unit's evaluation list.

Fix: track interface-body nesting in the PFT builder and do not add an
`OpenACCDeclarativeConstruct` to the enclosing unit's evaluation list
while
inside one. The directive is no longer hoisted out and is generated only
in its
proper scope (the procedure definition or a module-level declare).



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