[all-commits] [llvm/llvm-project] b11a42: [flang] Inline trivial scalar allocatable assignme...

[khaki3 via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b11a424e05826aadba71d9c15c4ae3821c92f713
      https://github.com/llvm/llvm-project/commit/b11a424e05826aadba71d9c15c4ae3821c92f713
  Author: khaki3 <47756807+khaki3 at users.noreply.github.com>
  Date:   2026-03-02 (Mon, 02 Mar 2026)

  Changed paths:
    M flang/lib/Optimizer/HLFIR/Transforms/ConvertToFIR.cpp
    M flang/test/HLFIR/assign-codegen.fir
    M flang/test/Lower/OpenMP/cfg-conversion-omp.private.f90

  Log Message:
  -----------
  [flang] Inline trivial scalar allocatable assignments in HLFIR-to-FIR (#183177)

For trivial scalar allocatable assignments (non-polymorphic,
non-character, non-array, non-temporary), inline the assignment directly
instead of calling the `_FortranAAssign` runtime. The inlined code
checks whether the allocatable is already allocated: if so, it stores
directly; otherwise, it allocates memory via `fir.allocmem`, stores, and
updates the box descriptor. The if-branch is necessary to handle both
cases:

```fortran
integer, allocatable :: k
allocate(k)
k = 42    ! already allocated: store directly
```

```fortran
integer, allocatable :: k
k = 42    ! not allocated: allocmem, store, update box
```



To unsubscribe from these emails, change your notification settings at https://github.com/llvm/llvm-project/settings/notifications