Index: src/cmd/internal/obj/arm64/anames.go
--- src/cmd/internal/obj/arm64/anames.go.orig
+++ src/cmd/internal/obj/arm64/anames.go
@@ -536,5 +536,6 @@ var Anames = []string{
 	"WFI",
 	"WORD",
 	"YIELD",
+	"BTI",
 	"LAST",
 }
