[all-commits] [llvm/llvm-project] 3ee768: [Flang][Fir] Set default alignment to 64 on inline...

[Jason Van Beusekom via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3ee76834fc9484080eee38964b4ebcb60442c8f8
      https://github.com/llvm/llvm-project/commit/3ee76834fc9484080eee38964b4ebcb60442c8f8
  Author: Jason Van Beusekom <jason.van-beusekom at hpe.com>
  Date:   2026-07-13 (Mon, 13 Jul 2026)

  Changed paths:
    M flang/include/flang/Optimizer/Dialect/FIROps.td
    M flang/lib/Optimizer/Builder/MutableBox.cpp
    M flang/lib/Optimizer/CodeGen/CodeGen.cpp
    M flang/lib/Optimizer/Dialect/FIROps.cpp
    A flang/test/Fir/alloc-aligned-device.fir
    A flang/test/Fir/alloc-aligned-omp.fir
    A flang/test/Fir/alloc-aligned.fir
    M flang/test/Fir/invalid.fir
    M flang/test/Lower/CUDA/cuda-allocatable.cuf
    M flang/test/Lower/HLFIR/allocatable-and-pointer-status-change.f90
    M flang/test/Lower/HLFIR/custom-intrinsic.f90
    M flang/test/Lower/HLFIR/intrinsic-dynamically-optional.f90
    M flang/test/Lower/Intrinsics/show_descriptor.f90
    M flang/test/Lower/OpenACC/acc-declare.f90
    M flang/test/Lower/OpenMP/allocatable-array-bounds.f90
    M flang/test/Lower/OpenMP/parallel-reduction-allocatable-array.f90
    M flang/test/Lower/OpenMP/parallel-reduction-mixed.f90
    M flang/test/Lower/OpenMP/wsloop-reduction-allocatable-array-minmax.f90

  Log Message:
  -----------
  [Flang][Fir] Set default alignment to 64 on inlineAllocation for arrays (#208781)

In https://github.com/llvm/llvm-project/pull/206525 the runtime was set
to default alloctable and pointer arrays to 64byte alignment. In this commit
the inlineallocation case is handled.

The same approach was taken and an alignment attribute was added,
with logic to promote to aligned_alloc or posixMemalign for apple
targets, when requested alignment is greater than 16.

Of note alignof(std::max_align_t)) was not used as the runtime target
may be different than the compile target, so 16 was hardcoded as when to
use aligned_alloc

Assisted-by: Opus 4.8



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