[SwiftOnoneSupport] information about the list of symbols

Author: glessard

stdlib/public/SwiftOnoneSupport/SwiftOnoneSupport.swift

@@ -19,6 +19,9 @@ import Swift
 // actual generic function name. The "prespecialize" annotation forces
 // the actual generic function to be specialized based on the argument
 // types passed to the proxy function.
+//
+// The list of symbols generated by prespecialization can be found at the path
+// "lib/SILOptimizer/Utils/OnonePrespecializations.def"
 // =============================================================================
 
 extension Collection {