[clang] [HLSL] Rework semantic handling as attributes (PR #166796)

[Steven Perron via cfe-commits]

================
@@ -781,14 +775,17 @@ void CGHLSLRuntime::emitEntryFunction(const FunctionDecl *FD,
     }
 
     const ParmVarDecl *PD = FD->getParamDecl(Param.getArgNo() - SRetOffset);
+    auto AttrBegin = PD->specific_attr_begin<HLSLAppliedSemanticAttr>();
+    auto AttrEnd = PD->specific_attr_end<HLSLAppliedSemanticAttr>();
----------------
s-perron wrote:

Could you move these into the else block closer to their use?

https://github.com/llvm/llvm-project/pull/166796