derek.holloway
7502bf64a4
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99 lines
3.0 KiB
LLVM
99 lines
3.0 KiB
LLVM
; RUN: opt < %s -passes='globaldce<vfe-linkage-unit-visibility>' -S | FileCheck %s
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; RUN: opt < %s -passes='lto<O2>' -S | FileCheck %s
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; structs A, B and C have vcall_visibility of public, linkage-unit and
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; translation-unit respectively. This test is run after LTO linking (the
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; pass parameter simulates how GlobalDCE is invoked from the regular LTO
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; pipeline), so B and C can be VFE'd.
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;; Try again without being in the LTO post link, we can only eliminate C.
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; RUN: opt < %s -passes='globaldce' -S | FileCheck %s --check-prefix=NO-LTO
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; RUN: opt < %s -passes='default<O2>' -S | FileCheck %s --check-prefix=NO-LTO
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target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
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%struct.A = type { ptr }
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@_ZTV1A = hidden unnamed_addr constant { [3 x ptr] } { [3 x ptr] [ptr null, ptr null, ptr @_ZN1A3fooEv] }, align 8, !type !0, !type !1, !vcall_visibility !2
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define internal void @_ZN1AC2Ev(ptr %this) {
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entry:
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store ptr getelementptr inbounds inrange(-16, 8) ({ [3 x ptr] }, ptr @_ZTV1A, i64 0, i32 0, i64 2), ptr %this, align 8
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ret void
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}
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; CHECK: define {{.*}} @_ZN1A3fooEv(
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; NO-LTO: define {{.*}} @_ZN1A3fooEv(
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define internal void @_ZN1A3fooEv(ptr nocapture %this) {
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entry:
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ret void
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}
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define dso_local ptr @_Z6make_Av() {
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entry:
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%call = tail call ptr @_Znwm(i64 8)
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tail call void @_ZN1AC2Ev(ptr %call)
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ret ptr %call
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}
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%struct.B = type { ptr }
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@_ZTV1B = hidden unnamed_addr constant { [3 x ptr] } { [3 x ptr] [ptr null, ptr null, ptr @_ZN1B3fooEv] }, align 8, !type !0, !type !1, !vcall_visibility !3
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define internal void @_ZN1BC2Ev(ptr %this) {
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entry:
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store ptr getelementptr inbounds inrange(-16, 8) ({ [3 x ptr] }, ptr @_ZTV1B, i64 0, i32 0, i64 2), ptr %this, align 8
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ret void
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}
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; CHECK-NOT: define {{.*}} @_ZN1B3fooEv(
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; NO-LTO: define {{.*}} @_ZN1B3fooEv(
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define internal void @_ZN1B3fooEv(ptr nocapture %this) {
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entry:
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ret void
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}
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define dso_local ptr @_Z6make_Bv() {
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entry:
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%call = tail call ptr @_Znwm(i64 8)
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tail call void @_ZN1BC2Ev(ptr %call)
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ret ptr %call
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}
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%struct.C = type { ptr }
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@_ZTV1C = hidden unnamed_addr constant { [3 x ptr] } { [3 x ptr] [ptr null, ptr null, ptr @_ZN1C3fooEv] }, align 8, !type !0, !type !1, !vcall_visibility !4
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define internal void @_ZN1CC2Ev(ptr %this) {
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entry:
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store ptr getelementptr inbounds inrange(-16, 8) ({ [3 x ptr] }, ptr @_ZTV1C, i64 0, i32 0, i64 2), ptr %this, align 8
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ret void
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}
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; CHECK-NOT: define {{.*}} @_ZN1C3fooEv(
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; NO-LTO-NOT: define {{.*}} @_ZN1C3fooEv(
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define internal void @_ZN1C3fooEv(ptr nocapture %this) {
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entry:
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ret void
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}
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define dso_local ptr @_Z6make_Cv() {
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entry:
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%call = tail call ptr @_Znwm(i64 8)
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tail call void @_ZN1CC2Ev(ptr %call)
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ret ptr %call
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}
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declare dso_local noalias nonnull ptr @_Znwm(i64)
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!llvm.module.flags = !{!6}
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!0 = !{i64 16, !"_ZTS1A"}
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!1 = !{i64 16, !"_ZTSM1AFvvE.virtual"}
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!2 = !{i64 0} ; public vcall visibility
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!3 = !{i64 1} ; linkage-unit vcall visibility
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!4 = !{i64 2} ; translation-unit vcall visibility
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!6 = !{i32 1, !"Virtual Function Elim", i32 1}
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