| ; RUN: opt < %s -globaldce -S | FileCheck %s |
| |
| ; We currently only use llvm.type.checked.load for virtual function pointers, |
| ; not any other part of the vtable, so we can't remove the RTTI pointer even if |
| ; it's never going to be loaded from. |
| |
| target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128" |
| |
| %struct.A = type { i32 (...)** } |
| |
| ; CHECK: @_ZTV1A = hidden unnamed_addr constant { [3 x i8*] } { [3 x i8*] [i8* null, i8* bitcast ({ i8*, i8* }* @_ZTI1A to i8*), i8* null] }, align 8, !type !0, !type !1, !vcall_visibility !2 |
| |
| @_ZTV1A = hidden unnamed_addr constant { [3 x i8*] } { [3 x i8*] [i8* null, i8* bitcast ({ i8*, i8* }* @_ZTI1A to i8*), i8* bitcast (void (%struct.A*)* @_ZN1A3fooEv to i8*)] }, align 8, !type !0, !type !1, !vcall_visibility !2 |
| @_ZTS1A = hidden constant [3 x i8] c"1A\00", align 1 |
| @_ZTI1A = hidden constant { i8*, i8* } { i8* bitcast (i8** getelementptr inbounds (i8*, i8** @_ZTVN10__cxxabiv117__class_type_infoE, i64 2) to i8*), i8* getelementptr inbounds ([3 x i8], [3 x i8]* @_ZTS1A, i32 0, i32 0) }, align 8 |
| |
| define internal void @_ZN1AC2Ev(%struct.A* %this) { |
| entry: |
| %0 = getelementptr inbounds %struct.A, %struct.A* %this, i64 0, i32 0 |
| 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 |
| ret void |
| } |
| |
| ; CHECK-NOT: define {{.*}} @_ZN1A3fooEv( |
| define internal void @_ZN1A3fooEv(%struct.A* nocapture %this) { |
| entry: |
| ret void |
| } |
| |
| define dso_local i8* @_Z6make_Av() { |
| entry: |
| %call = tail call i8* @_Znwm(i64 8) |
| %0 = bitcast i8* %call to %struct.A* |
| tail call void @_ZN1AC2Ev(%struct.A* %0) |
| ret i8* %call |
| } |
| |
| |
| declare dso_local noalias nonnull i8* @_Znwm(i64) |
| @_ZTVN10__cxxabiv117__class_type_infoE = external dso_local global i8* |
| |
| !llvm.module.flags = !{!3, !4} |
| |
| !0 = !{i64 16, !"_ZTS1A"} |
| !1 = !{i64 16, !"_ZTSM1AFvvE.virtual"} |
| !2 = !{i64 2} ; translation-unit vcall visibility |
| !3 = !{i32 1, !"LTOPostLink", i32 1} |
| !4 = !{i32 1, !"Virtual Function Elim", i32 1} |