1; RUN: llvm-as < %s | llvm-dis | FileCheck %s 2 3!0 = metadata !{metadata !"zero"} 4!1 = metadata !{metadata !"one"} 5!2 = metadata !{metadata !"two"} 6 7!foo = !{!0, !1, !2} 8; CHECK: !foo = !{!0, !1, !2} 9 10!\23pragma = !{!0, !1, !2} 11; CHECK: !\23pragma = !{!0, !1, !2} 12 13; \31 is the digit '1'. On emission, we escape the first character (to avoid 14; conflicting with anonymous metadata), but not the subsequent ones. 15!\31\31\31 = !{!0, !1, !2} 16; CHECK: !\3111 = !{!0, !1, !2} 17 18!\22name\22 = !{!0, !1, !2} 19; CHECK: !\22name\22 = !{!0, !1, !2} 20 21; \x doesn't mean anything, so we parse it literally but escape the \ into \5C 22; when emitting it, followed by xfoo. 23!\xfoo = !{!0, !1, !2} 24; CHECK: !\5Cxfoo = !{!0, !1, !2} 25