[all-commits] [llvm/llvm-project] 75fcae: [libclc] Fix memory_scope and memory_order of *mem...

[Wenju He via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 75fcaef3b60367e293e4208c8d88803f8650f3e1
      https://github.com/llvm/llvm-project/commit/75fcaef3b60367e293e4208c8d88803f8650f3e1
  Author: Wenju He <wenju.he at intel.com>
  Date:   2026-02-14 (Sat, 14 Feb 2026)

  Changed paths:
    M libclc/opencl/lib/amdgcn/mem_fence/fence.cl
    M libclc/opencl/lib/ptx-nvidiacl/mem_fence/fence.cl

  Log Message:
  -----------
  [libclc] Fix memory_scope and memory_order of *mem_fence builtins (#181311)

See OpenCL spec 6.15.12.5.
https://registry.khronos.org/OpenCL/specs/3.0-unified/html/OpenCL_C.html#fences

// Older syntax memory fences are equivalent to atomic_work_item_fence
with the // same flags parameter, memory_scope_work_group scope, and
ordering as follows:
void mem_fence(cl_mem_fence_flags flags)        // memory_order_acq_rel
void read_mem_fence(cl_mem_fence_flags flags)   // memory_order_acquire
void write_mem_fence(cl_mem_fence_flags flags)  // memory_order_release

---------

Co-authored-by: Copilot <175728472+Copilot at users.noreply.github.com>



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