func runtime.getArgInfoFast

2 uses

	runtime (current package)
		traceback.go#L295: 			frame.arglen, frame.argmap, ok = getArgInfoFast(f, callback != nil)
		traceback.go#L670: func getArgInfoFast(f funcInfo, needArgMap bool) (arglen uintptr, argmap *bitvector, ok bool) {