1; RUN: opt < %s -passes=internalize -S | FileCheck %s 2 3%struct.A = type { ptr } 4%struct.B = type { ptr } 5%struct.C = type { ptr } 6 7; Class A has default visibility, so has no !vcall_visibility metadata before 8; or after LTO. 9; CHECK-NOT: @_ZTV1A = {{.*}}!vcall_visibility 10@_ZTV1A = dso_local unnamed_addr constant { [3 x ptr] } { [3 x ptr] [ptr null, ptr null, ptr @_ZN1A3fooEv] }, align 8, !type !0, !type !1 11 12; Class B has hidden visibility but public LTO visibility, so has no 13; !vcall_visibility metadata before or after LTO. 14; CHECK-NOT: @_ZTV1B = {{.*}}!vcall_visibility 15@_ZTV1B = hidden unnamed_addr constant { [3 x ptr] } { [3 x ptr] [ptr null, ptr null, ptr @_ZN1B3fooEv] }, align 8, !type !2, !type !3 16 17; Class C has hidden visibility, so the !vcall_visibility metadata is set to 1 18; (linkage unit) before LTO, and 2 (translation unit) after LTO. 19; CHECK: @_ZTV1C ={{.*}}!vcall_visibility [[MD_TU_VIS:![0-9]+]] 20@_ZTV1C = hidden unnamed_addr constant { [3 x ptr] } { [3 x ptr] [ptr null, ptr null, ptr @_ZN1C3fooEv] }, align 8, !type !4, !type !5, !vcall_visibility !6 21 22; Class D has translation unit visibility before LTO, and this is not changed 23; by LTO. 24; CHECK: @_ZTVN12_GLOBAL__N_11DE = {{.*}}!vcall_visibility [[MD_TU_VIS:![0-9]+]] 25@_ZTVN12_GLOBAL__N_11DE = internal unnamed_addr constant { [3 x ptr] } zeroinitializer, align 8, !type !7, !type !9, !vcall_visibility !11 26 27define dso_local void @_ZN1A3fooEv(ptr nocapture %this) { 28entry: 29 ret void 30} 31 32define hidden void @_ZN1B3fooEv(ptr nocapture %this) { 33entry: 34 ret void 35} 36 37define hidden void @_ZN1C3fooEv(ptr nocapture %this) { 38entry: 39 ret void 40} 41 42define hidden noalias nonnull ptr @_Z6make_dv() { 43entry: 44 %call = tail call ptr @_Znwm(i64 8) #3 45 store ptr getelementptr inbounds inrange(-16, 8) ({ [3 x ptr] }, ptr @_ZTVN12_GLOBAL__N_11DE, i64 0, i32 0, i64 2), ptr %call, align 8 46 ret ptr %call 47} 48 49declare dso_local noalias nonnull ptr @_Znwm(i64) 50 51; CHECK: [[MD_TU_VIS]] = !{i64 2} 52!0 = !{i64 16, !"_ZTS1A"} 53!1 = !{i64 16, !"_ZTSM1AFvvE.virtual"} 54!2 = !{i64 16, !"_ZTS1B"} 55!3 = !{i64 16, !"_ZTSM1BFvvE.virtual"} 56!4 = !{i64 16, !"_ZTS1C"} 57!5 = !{i64 16, !"_ZTSM1CFvvE.virtual"} 58!6 = !{i64 1} 59!7 = !{i64 16, !8} 60!8 = distinct !{} 61!9 = !{i64 16, !10} 62!10 = distinct !{} 63!11 = !{i64 2} 64