1; RUN: opt < %s -passes=globaldce -S | FileCheck %s 2 3; We currently only use llvm.type.checked.load for virtual function pointers, 4; not any other part of the vtable, so we can't remove the RTTI pointer even if 5; it's never going to be loaded from. 6 7target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128" 8 9%struct.A = type { ptr } 10 11; CHECK: @_ZTV1A = hidden unnamed_addr constant { [3 x ptr] } { [3 x ptr] [ptr null, ptr @_ZTI1A, ptr null] }, align 8, !type !0, !type !1, !vcall_visibility !2 12 13@_ZTV1A = hidden unnamed_addr constant { [3 x ptr] } { [3 x ptr] [ptr null, ptr @_ZTI1A, ptr @_ZN1A3fooEv] }, align 8, !type !0, !type !1, !vcall_visibility !2 14@_ZTS1A = hidden constant [3 x i8] c"1A\00", align 1 15@_ZTI1A = hidden constant { ptr, ptr } { ptr getelementptr inbounds (ptr, ptr @_ZTVN10__cxxabiv117__class_type_infoE, i64 2), ptr @_ZTS1A }, align 8 16 17define internal void @_ZN1AC2Ev(ptr %this) { 18entry: 19 store ptr getelementptr inbounds inrange(-16, 8) ({ [3 x ptr] }, ptr @_ZTV1A, i64 0, i32 0, i64 2), ptr %this, align 8 20 ret void 21} 22 23; CHECK-NOT: define {{.*}} @_ZN1A3fooEv( 24define internal void @_ZN1A3fooEv(ptr nocapture %this) { 25entry: 26 ret void 27} 28 29define dso_local ptr @_Z6make_Av() { 30entry: 31 %call = tail call ptr @_Znwm(i64 8) 32 tail call void @_ZN1AC2Ev(ptr %call) 33 ret ptr %call 34} 35 36 37declare dso_local noalias nonnull ptr @_Znwm(i64) 38@_ZTVN10__cxxabiv117__class_type_infoE = external dso_local global ptr 39 40!llvm.module.flags = !{!4} 41 42!0 = !{i64 16, !"_ZTS1A"} 43!1 = !{i64 16, !"_ZTSM1AFvvE.virtual"} 44!2 = !{i64 2} ; translation-unit vcall visibility 45!4 = !{i32 1, !"Virtual Function Elim", i32 1} 46