[all-commits] [llvm/llvm-project] b8a588: [libclc] Fix memory fence scope mapping for OpenCL...

[Victor Mustya via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b8a5888d8d32246fd36d2f65bd917f03aa296e48
      https://github.com/llvm/llvm-project/commit/b8a5888d8d32246fd36d2f65bd917f03aa296e48
  Author: Victor Mustya <victor.mustya at intel.com>
  Date:   2025-12-04 (Thu, 04 Dec 2025)

  Changed paths:
    M libclc/opencl/include/clc/opencl/synchronization/utils.h

  Log Message:
  -----------
  [libclc] Fix memory fence scope mapping for OpenCL (#170542)

The function `__opencl_get_memory_scope` incorrectly assumed that the
Clang built-in `__MEMORY_SCOPE_*` macros defined as bitmasks, while they
are actually defined as distinct integer values. This led to incorrect
mapping of OpenCL memory fence flags to LLVM memory scopes, causing
issues in generated code.

The fix involves updating the `__opencl_get_memory_scope` function to
return the correct `__MEMORY_SCOPE_*` values based on the provided
`cl_mem_fence_flags`. Additionally, the `__opencl_get_memory_semantics`
and the `__opencl_get_memory_scope` functions are marked as `static`
to avoid potential multiple definition issues during linking.



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