[llvm] [SPIR-V] Improve type inference for a known instruction's builtin: OpGroupAsyncCopy (PR #96895)

[Vyacheslav Levytskyy via llvm-commits]

================
@@ -38,6 +38,12 @@ std::optional<bool> lowerBuiltin(const StringRef DemangledCall,
                                  const SmallVectorImpl<Register> &Args,
                                  SPIRVGlobalRegistry *GR);
 
+/// Helper external function for finding a builtin funtion attributes
----------------
VyacheslavLevytskyy wrote:

@michalpaszkowski done

https://github.com/llvm/llvm-project/pull/96895