================ @@ -4920,6 +4920,116 @@ If no address spaces names are provided, all address spaces are fenced. __builtin_amdgcn_fence(__ATOMIC_SEQ_CST, "workgroup", "local") __builtin_amdgcn_fence(__ATOMIC_SEQ_CST, "workgroup", "local", "global") +__builtin_amdgcn_processor_is and __builtin_amdgcn_is_invocable +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +``__builtin_amdgcn_processor_is`` and ``__builtin_amdgcn_is_invocable`` provide +a functional mechanism for programatically querying: + +* the identity of the current target processor; +* the capability of the current target processor to invoke a particular builtin. + +**Syntax**: + +.. code-block:: c + + // When used as the predicate for a control structure + bool __builtin_amdgcn_processor_is(const char*); + bool __builtin_amdgcn_is_invocable(builtin_name); + // Otherwise ---------------- AlexVlx wrote:
Type, when "observable", is always `void`. So e.g. `decltype(__builtin_amdgcn_processor_is(...)), sizeof(__builtin_amdgcn_processor_is(...)), auto x = __builtin_amdgcn_processor_is(...); decltype(x)` would always be `void` / errors. I will pick up the other two Qs in a more thorough reply. https://github.com/llvm/llvm-project/pull/134016 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
