1 ; RUN: opt < %s -passes=globaldce -S | FileCheck %s
3 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
5 declare { ptr, i1 } @llvm.type.checked.load(ptr, i32, metadata)
7 @vtable = internal unnamed_addr constant { [3 x i32] } { [3 x i32] [
8 i32 trunc (i64 sub (i64 ptrtoint (ptr @vfunc1 to i64), i64 ptrtoint (ptr @vtable to i64)) to i32),
9 i32 trunc (i64 sub (i64 ptrtoint (ptr @vfunc2 to i64), i64 ptrtoint (ptr @vtable to i64)) to i32),
11 ; a "bad" relative pointer because it's base is not the @vtable symbol
12 i32 trunc (i64 sub (i64 ptrtoint (ptr @weird_ref_1 to i64), i64 ptrtoint (ptr @weird_ref_2 to i64)) to i32)
13 ]}, align 8, !type !0, !type !1, !vcall_visibility !{i64 2}
14 !0 = !{i64 0, !"vfunc1.type"}
15 !1 = !{i64 4, !"vfunc2.type"}
17 ; CHECK: @vtable = internal unnamed_addr constant { [3 x i32] } zeroinitializer, align 8, !type !0, !type !1, !vcall_visibility !2
19 @vtable2 = internal unnamed_addr constant { [3 x i32] } { [3 x i32] [
20 i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @vfunc3 to i64), i64 ptrtoint (ptr @vtable2 to i64)) to i32),
21 i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @vfunc4 to i64), i64 ptrtoint (ptr @vtable2 to i64)) to i32),
23 ; a "bad" relative pointer because it's base is not the @vtable symbol
24 i32 trunc (i64 sub (i64 ptrtoint (ptr @weird_ref_3 to i64), i64 ptrtoint (ptr @weird_ref_4 to i64)) to i32)
25 ]}, align 4, !type !3, !type !4, !vcall_visibility !{i64 2}
26 !3 = !{i64 0, !"vfunc3.type"}
27 !4 = !{i64 4, !"vfunc4.type"}
29 ; CHECK: @vtable2 = internal unnamed_addr constant { [3 x i32] } zeroinitializer, align 4, !type !3, !type !4, !vcall_visibility !2
31 define internal void @vfunc1() { ret void }
32 define internal void @vfunc2() { ret void }
33 define internal void @weird_ref_1() { ret void }
34 define internal void @weird_ref_2() { ret void }
35 declare void @vfunc3()
36 declare void @vfunc4()
37 declare void @weird_ref_3()
38 declare void @weird_ref_4()
41 %1 = ptrtoint ptr @vtable to i64 ; to keep @vtable alive
42 call void @weird_ref_2()
43 %2 = ptrtoint ptr @vtable2 to i64 ; to keep @vtable2 alive
44 call void @weird_ref_4()
48 !999 = !{i32 1, !"Virtual Function Elim", i32 1}
49 !llvm.module.flags = !{!999}