Skip to content

Commit 2b90eb8

Browse files
kikairoyakikairoya
authored
[clang][DebugInfo] Re-enable VTable debug info on COFF platforms (#158450)
The debug info for VTables introduced in #130255 was temporarily disabled on COFF platforms by #151684, due to the risk of emitting dangling relocations (see also: #149639 (comment) ). This patch re-enables that debug info and adds a guard to prevent emitting dangling relocations by checking whether the VTable definition is actually emitted. Resolves #149639
1 parent d951575 commit 2b90eb8

10 files changed

+102
-64
lines changed

‎clang/lib/CodeGen/CGDebugInfo.cpp‎

Lines changed: 12 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -2657,12 +2657,22 @@ StringRef CGDebugInfo::getVTableName(const CXXRecordDecl *RD) {
26572657
// existing information in the DWARF. The type is assumed to be 'void *'.
26582658
void CGDebugInfo::emitVTableSymbol(llvm::GlobalVariable *VTable,
26592659
const CXXRecordDecl *RD) {
2660-
if (!CGM.getTarget().getCXXABI().isItaniumFamily() ||
2661-
CGM.getTarget().getTriple().isOSBinFormatCOFF())
2660+
if (!CGM.getTarget().getCXXABI().isItaniumFamily())
26622661
return;
26632662
if (DebugKind <= llvm::codegenoptions::DebugLineTablesOnly)
26642663
return;
26652664

2665+
// On COFF platform, we shouldn't emit a reference to an external entity (i.e.
2666+
// VTable) into debug info, which is constructed within a discardable section.
2667+
// If that entity ends up implicitly dllimported from another DLL, the linker
2668+
// may produce a runtime pseudo-relocation for it (BFD-ld only. LLD prohibits
2669+
// to emit such relocation). If the debug section is stripped, the runtime
2670+
// pseudo-relocation points to memory space outside of the module, causing an
2671+
// access violation.
2672+
if (CGM.getTarget().getTriple().isOSBinFormatCOFF() &&
2673+
VTable->isDeclarationForLinker())
2674+
return;
2675+
26662676
ASTContext &Context = CGM.getContext();
26672677
StringRef SymbolName = "_vtable$";
26682678
SourceLocation Loc;

‎clang/test/DebugInfo/CXX/class.cpp‎

Lines changed: 17 additions & 29 deletions
Original file line numberDiff line numberDiff line change
@@ -99,12 +99,12 @@ int main(int argc, char **argv) {
9999
return 0;
100100
}
101101

102-
// RUN: %clang_cc1 -triple x86_64-unknown_unknown -emit-llvm -debug-info-kind=limited -fexceptions -std=c++98 %s -o - | FileCheck -check-prefix=CHECK98 -check-prefix=CHECK -check-prefix=CHECKELF %s
103-
// RUN: %clang_cc1 -triple i686-cygwin -emit-llvm -debug-info-kind=limited -fexceptions -std=c++98 %s -o - | FileCheck -check-prefix=CHECK98 -check-prefix=CHECK -check-prefix=CHECKCOFF %s
104-
// RUN: %clang_cc1 -triple armv7l-unknown-linux-gnueabihf -emit-llvm -debug-info-kind=limited -fexceptions -std=c++98 %s -o - | FileCheck -check-prefix=CHECK98 -check-prefix=CHECK -check-prefix=CHECKELF %s
105-
// RUN: %clang_cc1 -triple x86_64-unknown_unknown -emit-llvm -debug-info-kind=limited -fexceptions -std=c++11 %s -o - | FileCheck -check-prefix=CHECK11 -check-prefix=CHECK -check-prefix=CHECKELF %s
106-
// RUN: %clang_cc1 -triple i686-cygwin -emit-llvm -debug-info-kind=limited -fexceptions -std=c++11 %s -o - | FileCheck -check-prefix=CHECK11 -check-prefix=CHECK -check-prefix=CHECKCOFF %s
107-
// RUN: %clang_cc1 -triple armv7l-unknown-linux-gnueabihf -emit-llvm -debug-info-kind=limited -fexceptions -std=c++11 %s -o - | FileCheck -check-prefix=CHECK11 -check-prefix=CHECK -check-prefix=CHECKELF %s
102+
// RUN: %clang_cc1 -triple x86_64-unknown_unknown -emit-llvm -debug-info-kind=limited -fexceptions -std=c++98 %s -o - | FileCheck -check-prefix=CHECK98 -check-prefix=CHECK %s
103+
// RUN: %clang_cc1 -triple i686-cygwin -emit-llvm -debug-info-kind=limited -fexceptions -std=c++98 %s -o - | FileCheck -check-prefix=CHECK98 -check-prefix=CHECK %s
104+
// RUN: %clang_cc1 -triple armv7l-unknown-linux-gnueabihf -emit-llvm -debug-info-kind=limited -fexceptions -std=c++98 %s -o - | FileCheck -check-prefix=CHECK98 -check-prefix=CHECK %s
105+
// RUN: %clang_cc1 -triple x86_64-unknown_unknown -emit-llvm -debug-info-kind=limited -fexceptions -std=c++11 %s -o - | FileCheck -check-prefix=CHECK11 -check-prefix=CHECK %s
106+
// RUN: %clang_cc1 -triple i686-cygwin -emit-llvm -debug-info-kind=limited -fexceptions -std=c++11 %s -o - | FileCheck -check-prefix=CHECK11 -check-prefix=CHECK %s
107+
// RUN: %clang_cc1 -triple armv7l-unknown-linux-gnueabihf -emit-llvm -debug-info-kind=limited -fexceptions -std=c++11 %s -o - | FileCheck -check-prefix=CHECK11 -check-prefix=CHECK %s
108108

109109
// CHECK98: invoke {{.+}} @_ZN1BD1Ev(ptr {{[^,]*}} %b)
110110
// CHECK98-NEXT: unwind label %{{.+}}, !dbg ![[EXCEPTLOC:.*]]
@@ -122,14 +122,6 @@ int main(int argc, char **argv) {
122122
// CHECK-SAME: ){{$}}
123123

124124
// CHECK: ![[INT:[0-9]+]] = !DIBasicType(name: "int"
125-
// CHECKCOFF: !DICompositeType(tag: DW_TAG_structure_type, name: "foo"
126-
// CHECKCOFF: !DICompositeType(tag: DW_TAG_class_type, name: "bar"
127-
// CHECKCOFF: !DICompositeType(tag: DW_TAG_union_type, name: "baz"
128-
// CHECKCOFF: !DICompositeType(tag: DW_TAG_class_type, name: "B"
129-
// CHECKCOFF-NOT: DIFlagFwdDecl
130-
// CHECKCOFF-SAME: ){{$}}
131-
// CHECKCOFF: !DIDerivedType(tag: DW_TAG_member, name: "_vptr$B",
132-
// CHECKCOFF-SAME: DIFlagArtificial
133125

134126
// CHECK: [[C:![0-9]*]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "C",
135127
// CHECK-NOT: DIFlagFwdDecl
@@ -145,19 +137,19 @@ int main(int argc, char **argv) {
145137
// CHECK-SAME: DIFlagStaticMember
146138
// CHECK: [[C_DTOR]] = !DISubprogram(name: "~C"
147139

148-
// CHECKELF: !DICompositeType(tag: DW_TAG_structure_type, name: "K"
149-
// CHECKELF-SAME: identifier: "_ZTS1K"
150-
// CHECKELF-SAME: ){{$}}
140+
// CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "K"
141+
// CHECK-SAME: identifier: "_ZTS1K"
142+
// CHECK-SAME: ){{$}}
151143

152-
// CHECKELF: !DICompositeType(tag: DW_TAG_class_type, name: "B"
153-
// CHECKELF-NOT: DIFlagFwdDecl
154-
// CHECKELF-SAME: ){{$}}
155-
// CHECKELF: !DIDerivedType(tag: DW_TAG_member, name: "_vptr$B",
156-
// CHECKELF-SAME: DIFlagArtificial
144+
// CHECK: !DICompositeType(tag: DW_TAG_class_type, name: "B"
145+
// CHECK-NOT: DIFlagFwdDecl
146+
// CHECK-SAME: ){{$}}
147+
// CHECK: !DIDerivedType(tag: DW_TAG_member, name: "_vptr$B",
148+
// CHECK-SAME: DIFlagArtificial
157149

158-
// CHECKELF: !DICompositeType(tag: DW_TAG_structure_type, name: "foo"
159-
// CHECKELF: !DICompositeType(tag: DW_TAG_class_type, name: "bar"
160-
// CHECKELF: !DICompositeType(tag: DW_TAG_union_type, name: "baz"
150+
// CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "foo"
151+
// CHECK: !DICompositeType(tag: DW_TAG_class_type, name: "bar"
152+
// CHECK: !DICompositeType(tag: DW_TAG_union_type, name: "baz"
161153

162154
// CHECK: [[D:![0-9]+]] = !DICompositeType(tag: DW_TAG_structure_type, name: "D"
163155
// CHECK-SAME: size:
@@ -170,10 +162,6 @@ int main(int argc, char **argv) {
170162
// CHECK-NOT: identifier:
171163
// CHECK-SAME: ){{$}}
172164

173-
// CHECKCOFF: !DICompositeType(tag: DW_TAG_structure_type, name: "K"
174-
// CHECKCOFF-SAME: identifier: "_ZTS1K"
175-
// CHECKCOFF-SAME: ){{$}}
176-
177165
// CHECK: [[L:![0-9]+]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "L"
178166
// CHECK-SAME: ){{$}}
179167
// CHECK: [[L_FUNC_DECL:![0-9]*]] = !DISubprogram(name: "func",{{.*}} scope: [[L]]

‎clang/test/DebugInfo/CXX/vtable-external.cpp‎

Lines changed: 12 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -18,7 +18,7 @@
1818
// * Its '_vtable$' is NOT generated
1919
// # when optimized even if no LLVM passes:
2020
// * The vtable is declared as `available_externally` (which is potentially turned into `external` by LLVM passes)
21-
// * Its '_vtable$' is generated
21+
// * Its '_vtable$' is generated only if the compiler is targeting the non-COFF platforms
2222

2323
struct CInlined {
2424
virtual void f1() noexcept {}
@@ -64,14 +64,20 @@ int main() {
6464
// RUN: %clang_cc1 -triple x86_64-linux -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O0 -disable-llvm-passes -DNO_DTOR_BODY %s -o - | FileCheck %s -check-prefixes CHECK-NO-DTOR,CHECK-NO-DTOR-O0
6565
// RUN: %clang_cc1 -triple x86_64-linux -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O1 -disable-llvm-passes -DNO_DTOR_BODY %s -o - | FileCheck %s -check-prefixes CHECK-NO-DTOR,CHECK-NO-DTOR-O1
6666

67+
// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O0 -disable-llvm-passes %s -o - | FileCheck %s -check-prefixes CHECK-HAS-DTOR,CHECK-HAS-DTOR-O0
68+
// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O1 -disable-llvm-passes %s -o - | FileCheck %s -check-prefixes CHECK-HAS-DTOR,CHECK-HAS-DTOR-O1-NODBG
69+
// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O0 -disable-llvm-passes -DNO_DTOR_BODY %s -o - | FileCheck %s -check-prefixes CHECK-NO-DTOR,CHECK-NO-DTOR-O0
70+
// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O1 -disable-llvm-passes -DNO_DTOR_BODY %s -o - | FileCheck %s -check-prefixes CHECK-NO-DTOR,CHECK-NO-DTOR-O1-NODBG
71+
6772
// CHECK-HAS-DTOR: $_ZTV8CInlined = comdat any
6873
// CHECK-HAS-DTOR-NOT: $_ZTV9CNoInline
6974
// CHECK-HAS-DTOR-NOT: $_ZTV8CNoFnDef
7075

7176
// CHECK-HAS-DTOR-DAG: @_ZTV8CInlined = linkonce_odr {{.*}}constant {{{ \[[^]]*\] } { \[[^]]*\] \[[^]]*\] }}}, comdat, align 8, !dbg [[INLINED_VTABLE_VAR:![0-9]+]]
7277
// CHECK-HAS-DTOR-DAG: @_ZTV9CNoInline = {{.*}}constant {{{ \[[^]]*\] } { \[[^]]*\] \[[^]]*\] }}}, align 8, !dbg [[NOINLINE_VTABLE_VAR:![0-9]+]]
73-
// CHECK-HAS-DTOR-O0-DAG: @_ZTV8CNoFnDef = external {{.*}}constant {{{ \[[^]]*\] }}}, align 8{{$}}
74-
// CHECK-HAS-DTOR-O1-DAG: @_ZTV8CNoFnDef = available_externally {{.*}}constant {{{ \[[^]]*\] } { \[[^]]*\] \[[^]]*\] }}}, align 8, !dbg [[NOFNDEF_VTABLE_VAR:![0-9]+]]
78+
// CHECK-HAS-DTOR-O0-DAG: @_ZTV8CNoFnDef = external {{.*}}constant {{{ \[[^]]*\] }}}, align 8{{$}}
79+
// CHECK-HAS-DTOR-O1-DAG: @_ZTV8CNoFnDef = available_externally {{.*}}constant {{{ \[[^]]*\] } { \[[^]]*\] \[[^]]*\] }}}, align 8, !dbg [[NOFNDEF_VTABLE_VAR:![0-9]+]]
80+
// CHECK-HAS-DTOR-O1-NODBG-DAG: @_ZTV8CNoFnDef = available_externally {{.*}}constant {{{ \[[^]]*\] } { \[[^]]*\] \[[^]]*\] }}}, align 8{{$}}
7581

7682
// CHECK-HAS-DTOR: !llvm.dbg.cu
7783

@@ -94,8 +100,9 @@ int main() {
94100

95101
// CHECK-NO-DTOR-DAG: @_ZTV8CInlined = external {{.*}}constant {{.*}}, align 8{{$}}
96102
// CHECK-NO-DTOR-DAG: @_ZTV9CNoInline = {{.*}}constant {{{ \[[^]]*\] } { \[[^]]*\] \[[^]]*\] }}}, align 8, !dbg [[NOINLINE_VTABLE_VAR:![0-9]+]]
97-
// CHECK-NO-DTOR-O0-DAG: @_ZTV8CNoFnDef = external {{.*}}constant {{{ \[[^]]*\] }}}, align 8{{$}}
98-
// CHECK-NO-DTOR-O1-DAG: @_ZTV8CNoFnDef = available_externally {{.*}}constant {{{ \[[^]]*\] } { \[[^]]*\] \[[^]]*\] }}}, align 8, !dbg [[NOFNDEF_VTABLE_VAR:![0-9]+]]
103+
// CHECK-NO-DTOR-O0-DAG: @_ZTV8CNoFnDef = external {{.*}}constant {{{ \[[^]]*\] }}}, align 8{{$}}
104+
// CHECK-NO-DTOR-O1-DAG: @_ZTV8CNoFnDef = available_externally {{.*}}constant {{{ \[[^]]*\] } { \[[^]]*\] \[[^]]*\] }}}, align 8, !dbg [[NOFNDEF_VTABLE_VAR:![0-9]+]]
105+
// CHECK-NO-DTOR-O1-NODBG-DAG: @_ZTV8CNoFnDef = available_externally {{.*}}constant {{{ \[[^]]*\] } { \[[^]]*\] \[[^]]*\] }}}, align 8{{$}}
99106

100107
// CHECK-NO-DTOR: !llvm.dbg.cu
101108

‎clang/test/DebugInfo/CXX/vtable-inheritance-diamond.cpp‎

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -44,6 +44,8 @@ int main() {
4444

4545
// RUN: %clang_cc1 -triple x86_64-linux -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O0 -disable-llvm-passes %s -o - | FileCheck %s
4646
// RUN: %clang_cc1 -triple x86_64-linux -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O1 -disable-llvm-passes %s -o - | FileCheck %s
47+
// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O0 -disable-llvm-passes %s -o - | FileCheck %s
48+
// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O1 -disable-llvm-passes %s -o - | FileCheck %s
4749

4850
// CHECK: $_ZTVN3NSP5CBaseE = comdat any
4951
// CHECK: $_ZTVN5NSP_15CLeftE = comdat any

‎clang/test/DebugInfo/CXX/vtable-inheritance-multiple.cpp‎

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -38,6 +38,8 @@ int main() {
3838

3939
// RUN: %clang_cc1 -triple x86_64-linux -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O0 -disable-llvm-passes %s -o - | FileCheck %s
4040
// RUN: %clang_cc1 -triple x86_64-linux -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O1 -disable-llvm-passes %s -o - | FileCheck %s
41+
// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O0 -disable-llvm-passes %s -o - | FileCheck %s
42+
// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O1 -disable-llvm-passes %s -o - | FileCheck %s
4143

4244
// CHECK: $_ZTVN5NSP_18CBaseOneE = comdat any
4345
// CHECK: $_ZTVN5NSP_28CBaseTwoE = comdat any

‎clang/test/DebugInfo/CXX/vtable-inheritance-simple-main.cpp‎

Lines changed: 24 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -108,6 +108,30 @@ int main() {
108108
// RUN: llvm-link %t.simple-base.bc %t.simple-derived.bc %t.simple-main.bc -S -o %t.simple-combined.ll
109109
// RUN: FileCheck --input-file=%t.simple-combined.ll -check-prefix=CHECK-TWO %s
110110

111+
// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm-bc -debug-info-kind=limited -dwarf-version=5 -O0 %s -o %t.simple-base.bc -DBASE_CODE
112+
// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm-bc -debug-info-kind=limited -dwarf-version=5 -O0 %s -o %t.simple-derived.bc -DDERIVED_CODE
113+
// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm-bc -debug-info-kind=limited -dwarf-version=5 -O0 %s -o %t.simple-main.bc -DMAIN_CODE
114+
// RUN: llvm-link %t.simple-base.bc %t.simple-derived.bc %t.simple-main.bc -S -o %t.simple-combined.ll
115+
// RUN: FileCheck --input-file=%t.simple-combined.ll -check-prefix=CHECK-ONE %s
116+
117+
// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm-bc -debug-info-kind=limited -dwarf-version=5 -O0 -flto %s -o %t.simple-base.bc -DBASE_CODE
118+
// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm-bc -debug-info-kind=limited -dwarf-version=5 -O0 -flto %s -o %t.simple-derived.bc -DDERIVED_CODE
119+
// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm-bc -debug-info-kind=limited -dwarf-version=5 -O0 -flto %s -o %t.simple-main.bc -DMAIN_CODE
120+
// RUN: llvm-link %t.simple-base.bc %t.simple-derived.bc %t.simple-main.bc -S -o %t.simple-combined.ll
121+
// RUN: FileCheck --input-file=%t.simple-combined.ll -check-prefix=CHECK-ONE %s
122+
123+
// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm-bc -debug-info-kind=limited -dwarf-version=5 -O0 %s -o %t.simple-base.bc -DBASE_CODE -DSYMBOL_AT_FILE_SCOPE
124+
// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm-bc -debug-info-kind=limited -dwarf-version=5 -O0 %s -o %t.simple-derived.bc -DDERIVED_CODE -DSYMBOL_AT_FILE_SCOPE
125+
// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm-bc -debug-info-kind=limited -dwarf-version=5 -O0 %s -o %t.simple-main.bc -DMAIN_CODE -DSYMBOL_AT_FILE_SCOPE
126+
// RUN: llvm-link %t.simple-base.bc %t.simple-derived.bc %t.simple-main.bc -S -o %t.simple-combined.ll
127+
// RUN: FileCheck --input-file=%t.simple-combined.ll -check-prefix=CHECK-TWO %s
128+
129+
// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm-bc -debug-info-kind=limited -dwarf-version=5 -O0 -flto %s -o %t.simple-base.bc -DBASE_CODE -DSYMBOL_AT_FILE_SCOPE
130+
// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm-bc -debug-info-kind=limited -dwarf-version=5 -O0 -flto %s -o %t.simple-derived.bc -DDERIVED_CODE -DSYMBOL_AT_FILE_SCOPE
131+
// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm-bc -debug-info-kind=limited -dwarf-version=5 -O0 -flto %s -o %t.simple-main.bc -DMAIN_CODE -DSYMBOL_AT_FILE_SCOPE
132+
// RUN: llvm-link %t.simple-base.bc %t.simple-derived.bc %t.simple-main.bc -S -o %t.simple-combined.ll
133+
// RUN: FileCheck --input-file=%t.simple-combined.ll -check-prefix=CHECK-TWO %s
134+
111135
// CHECK-ONE: ${{_ZN3NSP5CBaseC2Ev|_ZN8CDerivedC2Ev}} = comdat any
112136
// CHECK-ONE: ${{_ZN3NSP5CBaseC2Ev|_ZN8CDerivedC2Ev}} = comdat any
113137

‎clang/test/DebugInfo/CXX/vtable-inheritance-simple.cpp‎

Lines changed: 2 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -30,19 +30,14 @@ int main() {
3030

3131
// RUN: %clang_cc1 -triple x86_64-linux -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O0 -disable-llvm-passes %s -o - | FileCheck %s
3232
// RUN: %clang_cc1 -triple x86_64-linux -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O1 -disable-llvm-passes %s -o - | FileCheck %s
33-
// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O0 -disable-llvm-passes %s -o - | FileCheck %s --check-prefix=COFF
33+
// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O0 -disable-llvm-passes %s -o - | FileCheck %s
34+
// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O1 -disable-llvm-passes %s -o - | FileCheck %s
3435

3536
// CHECK: $_ZTVN3NSP5CBaseE = comdat any
3637
// CHECK: $_ZTV8CDerived = comdat any
3738

3839
// CHECK: @_ZTVN3NSP5CBaseE = linkonce_odr {{.*}}unnamed_addr constant {{.*}}, comdat, align 8, !dbg [[BASE_VTABLE_VAR:![0-9]*]]
3940
// CHECK: @_ZTV8CDerived = linkonce_odr {{.*}}unnamed_addr constant {{.*}}, comdat, align 8, !dbg [[DERIVED_VTABLE_VAR:![0-9]*]]
40-
// COFF: @_ZTVN3NSP5CBaseE = linkonce_odr {{.*}}unnamed_addr constant {{.*}}, comdat, align 8
41-
// COFF-NOT: !dbg
42-
// COFF-SAME: {{$}}
43-
// COFF: @_ZTV8CDerived = linkonce_odr {{.*}}unnamed_addr constant {{.*}}, comdat, align 8
44-
// COFF-NOT: !dbg
45-
// COFF-SAME: {{$}}
4641

4742
// CHECK: [[BASE_VTABLE_VAR]] = !DIGlobalVariableExpression(var: [[BASE_VTABLE:![0-9]*]], expr: !DIExpression())
4843
// CHECK-NEXT: [[BASE_VTABLE]] = distinct !DIGlobalVariable(name: "_vtable$", linkageName: "_ZTVN3NSP5CBaseE"

‎clang/test/DebugInfo/CXX/vtable-inheritance-virtual.cpp‎

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -44,6 +44,8 @@ int main() {
4444

4545
// RUN: %clang_cc1 -triple x86_64-linux -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O0 -disable-llvm-passes %s -o - | FileCheck %s
4646
// RUN: %clang_cc1 -triple x86_64-linux -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O1 -disable-llvm-passes %s -o - | FileCheck %s
47+
// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O0 -disable-llvm-passes %s -o - | FileCheck %s
48+
// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O1 -disable-llvm-passes %s -o - | FileCheck %s
4749

4850
// CHECK: $_ZTVN3NSP5CBaseE = comdat any
4951
// CHECK: $_ZTVN5NSP_15CLeftE = comdat any

0 commit comments

Comments
 (0)