derek.holloway
7502bf64a4
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45 lines
1.9 KiB
LLVM
45 lines
1.9 KiB
LLVM
; RUN: opt < %s -passes=globaldce -S | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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declare { ptr, i1 } @llvm.type.checked.load(ptr, i32, metadata)
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@vtableA = internal unnamed_addr constant { [2 x i32] } { [2 x i32] [
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i32 0,
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i32 trunc (i64 sub (i64 ptrtoint (ptr @vfunc2 to i64), i64 ptrtoint (ptr @vtableA to i64)) to i32)
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]}, align 8, !type !{i64 0, !"vfunc1.type"}, !type !{i64 4, !"vfunc2.type"}, !vcall_visibility !{i64 2}
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; CHECK: @vtableA = internal unnamed_addr constant { [2 x i32] } { [2 x i32] [
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; CHECK-SAME: i32 0,
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; CHECK-SAME: i32 trunc (i64 sub (i64 ptrtoint (ptr @vfunc2 to i64), i64 ptrtoint (ptr @vtableA to i64)) to i32)
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; CHECK-SAME: ] }, align 8
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@vtableB = internal unnamed_addr constant { [2 x i32] } { [2 x i32] [
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i32 trunc (i64 sub (i64 ptrtoint (ptr @vfunc1 to i64), i64 ptrtoint (ptr @vtableB to i64)) to i32),
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i32 trunc (i64 sub (i64 ptrtoint (ptr @vfunc2 to i64), i64 ptrtoint (ptr @vtableB to i64)) to i32)
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]}, align 8, !type !{i64 0, !"vfunc1.type"}, !type !{i64 4, !"vfunc2.type"}, !vcall_visibility !{i64 2}
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; CHECK: @vtableB = internal unnamed_addr constant { [2 x i32] } { [2 x i32] [
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; CHECK-SAME: i32 trunc (i64 sub (i64 ptrtoint (ptr @vfunc1 to i64), i64 ptrtoint (ptr @vtableB to i64)) to i32),
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; CHECK-SAME: i32 trunc (i64 sub (i64 ptrtoint (ptr @vfunc2 to i64), i64 ptrtoint (ptr @vtableB to i64)) to i32)
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; CHECK-SAME: ] }, align 8
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define internal void @vfunc1() {
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ret void
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}
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define internal void @vfunc2() {
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ret void
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}
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define void @main() {
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%1 = ptrtoint ptr @vtableA to i64 ; to keep @vtableA alive
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%2 = ptrtoint ptr @vtableB to i64 ; to keep @vtableB alive
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%3 = tail call { ptr, i1 } @llvm.type.checked.load(ptr null, i32 0, metadata !"vfunc1.type")
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%4 = tail call { ptr, i1 } @llvm.type.checked.load(ptr null, i32 0, metadata !"vfunc2.type")
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ret void
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}
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!999 = !{i32 1, !"Virtual Function Elim", i32 1}
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!llvm.module.flags = !{!999}
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