1; RUN: opt < %s -passes=globaldce -S | FileCheck %s 2 3target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 4 5declare { ptr, i1 } @llvm.type.checked.load(ptr, i32, metadata) 6 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), 10 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"} 16 17; CHECK: @vtable = internal unnamed_addr constant { [3 x i32] } zeroinitializer, align 8, !type !0, !type !1, !vcall_visibility !2 18 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), 22 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"} 28 29; CHECK: @vtable2 = internal unnamed_addr constant { [3 x i32] } zeroinitializer, align 4, !type !3, !type !4, !vcall_visibility !2 30 31define internal void @vfunc1() { ret void } 32define internal void @vfunc2() { ret void } 33define internal void @weird_ref_1() { ret void } 34define internal void @weird_ref_2() { ret void } 35declare void @vfunc3() 36declare void @vfunc4() 37declare void @weird_ref_3() 38declare void @weird_ref_4() 39 40define void @main() { 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() 45 ret void 46} 47 48!999 = !{i32 1, !"Virtual Function Elim", i32 1} 49!llvm.module.flags = !{!999} 50