1; RUN: opt < %s -globaldce -S | FileCheck %s 2 3; structs A, B and C have vcall_visibility of public, linkage-unit and 4; translation-unit respectively. This test is run before LTO linking occurs 5; (the LTOPostLink metadata is not present), so only C can be VFE'd. 6 7target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128" 8 9%struct.A = type { i32 (...)** } 10 11@_ZTV1A = hidden unnamed_addr constant { [3 x i8*] } { [3 x i8*] [i8* null, i8* null, i8* bitcast (void (%struct.A*)* @_ZN1A3fooEv to i8*)] }, align 8, !type !0, !type !1, !vcall_visibility !2 12 13define internal void @_ZN1AC2Ev(%struct.A* %this) { 14entry: 15 %0 = getelementptr inbounds %struct.A, %struct.A* %this, i64 0, i32 0 16 store i32 (...)** bitcast (i8** getelementptr inbounds ({ [3 x i8*] }, { [3 x i8*] }* @_ZTV1A, i64 0, inrange i32 0, i64 2) to i32 (...)**), i32 (...)*** %0, align 8 17 ret void 18} 19 20; CHECK: define {{.*}} @_ZN1A3fooEv( 21define internal void @_ZN1A3fooEv(%struct.A* nocapture %this) { 22entry: 23 ret void 24} 25 26define dso_local i8* @_Z6make_Av() { 27entry: 28 %call = tail call i8* @_Znwm(i64 8) 29 %0 = bitcast i8* %call to %struct.A* 30 tail call void @_ZN1AC2Ev(%struct.A* %0) 31 ret i8* %call 32} 33 34 35%struct.B = type { i32 (...)** } 36 37@_ZTV1B = hidden unnamed_addr constant { [3 x i8*] } { [3 x i8*] [i8* null, i8* null, i8* bitcast (void (%struct.B*)* @_ZN1B3fooEv to i8*)] }, align 8, !type !0, !type !1, !vcall_visibility !3 38 39define internal void @_ZN1BC2Ev(%struct.B* %this) { 40entry: 41 %0 = getelementptr inbounds %struct.B, %struct.B* %this, i64 0, i32 0 42 store i32 (...)** bitcast (i8** getelementptr inbounds ({ [3 x i8*] }, { [3 x i8*] }* @_ZTV1B, i64 0, inrange i32 0, i64 2) to i32 (...)**), i32 (...)*** %0, align 8 43 ret void 44} 45 46; CHECK: define {{.*}} @_ZN1B3fooEv( 47define internal void @_ZN1B3fooEv(%struct.B* nocapture %this) { 48entry: 49 ret void 50} 51 52define dso_local i8* @_Z6make_Bv() { 53entry: 54 %call = tail call i8* @_Znwm(i64 8) 55 %0 = bitcast i8* %call to %struct.B* 56 tail call void @_ZN1BC2Ev(%struct.B* %0) 57 ret i8* %call 58} 59 60 61%struct.C = type { i32 (...)** } 62 63@_ZTV1C = hidden unnamed_addr constant { [3 x i8*] } { [3 x i8*] [i8* null, i8* null, i8* bitcast (void (%struct.C*)* @_ZN1C3fooEv to i8*)] }, align 8, !type !0, !type !1, !vcall_visibility !4 64 65define internal void @_ZN1CC2Ev(%struct.C* %this) { 66entry: 67 %0 = getelementptr inbounds %struct.C, %struct.C* %this, i64 0, i32 0 68 store i32 (...)** bitcast (i8** getelementptr inbounds ({ [3 x i8*] }, { [3 x i8*] }* @_ZTV1C, i64 0, inrange i32 0, i64 2) to i32 (...)**), i32 (...)*** %0, align 8 69 ret void 70} 71 72; CHECK-NOT: define {{.*}} @_ZN1C3fooEv( 73define internal void @_ZN1C3fooEv(%struct.C* nocapture %this) { 74entry: 75 ret void 76} 77 78define dso_local i8* @_Z6make_Cv() { 79entry: 80 %call = tail call i8* @_Znwm(i64 8) 81 %0 = bitcast i8* %call to %struct.C* 82 tail call void @_ZN1CC2Ev(%struct.C* %0) 83 ret i8* %call 84} 85 86declare dso_local noalias nonnull i8* @_Znwm(i64) 87 88!llvm.module.flags = !{!5} 89 90!0 = !{i64 16, !"_ZTS1A"} 91!1 = !{i64 16, !"_ZTSM1AFvvE.virtual"} 92!2 = !{i64 0} ; public vcall visibility 93!3 = !{i64 1} ; linkage-unit vcall visibility 94!4 = !{i64 2} ; translation-unit vcall visibility 95!5 = !{i32 1, !"Virtual Function Elim", i32 1} 96