[clang][DebugInfo] Re-enable VTable debug info on COFF platforms

clang/lib/CodeGen/CGDebugInfo.cpp

@@ -2657,12 +2657,22 @@ StringRef CGDebugInfo::getVTableName(const CXXRecordDecl *RD) {
 // existing information in the DWARF. The type is assumed to be 'void *'.
 void CGDebugInfo::emitVTableSymbol(llvm::GlobalVariable *VTable,
                                    const CXXRecordDecl *RD) {
-  if (!CGM.getTarget().getCXXABI().isItaniumFamily() ||
-      CGM.getTarget().getTriple().isOSBinFormatCOFF())
+  if (!CGM.getTarget().getCXXABI().isItaniumFamily())
     return;
   if (DebugKind <= llvm::codegenoptions::DebugLineTablesOnly)
     return;
 
+  // On COFF platform, we shouldn't emit a reference to an external entity (i.e.
+  // VTable) into debug info, which is constructed within a discardable section.
+  // If that entity ends up implicitly dllimported from another DLL, the linker
+  // may produce a runtime pseudo-relocation for it (BFD-ld only. LLD prohibits
+  // to emit such relocation). If the debug section is stripped, the runtime
+  // pseudo-relocation points to memory space outside of the module, causing an
+  // access violation.
+  if (CGM.getTarget().getTriple().isOSBinFormatCOFF() &&
+      VTable->isDeclarationForLinker())
+    return;
+
   ASTContext &Context = CGM.getContext();
   StringRef SymbolName = "_vtable$";
   SourceLocation Loc;

clang/test/DebugInfo/CXX/class.cpp

@@ -99,12 +99,12 @@ int main(int argc, char **argv) {
   return 0;
 }
 
-// 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
-// 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
-// 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
-// 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
-// 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
-// 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
+// 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
+// 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
+// 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
+// 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
+// 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
+// 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
 
 // CHECK98: invoke {{.+}} @_ZN1BD1Ev(ptr {{[^,]*}} %b)
 // CHECK98-NEXT: unwind label %{{.+}}, !dbg ![[EXCEPTLOC:.*]]
@@ -122,14 +122,6 @@ int main(int argc, char **argv) {
 // CHECK-SAME:             ){{$}}
 
 // CHECK:      ![[INT:[0-9]+]] = !DIBasicType(name: "int"
-// CHECKCOFF: !DICompositeType(tag: DW_TAG_structure_type, name: "foo"
-// CHECKCOFF: !DICompositeType(tag: DW_TAG_class_type, name: "bar"
-// CHECKCOFF: !DICompositeType(tag: DW_TAG_union_type, name: "baz"
-// CHECKCOFF: !DICompositeType(tag: DW_TAG_class_type, name: "B"
-// CHECKCOFF-NOT:              DIFlagFwdDecl
-// CHECKCOFF-SAME:             ){{$}}
-// CHECKCOFF: !DIDerivedType(tag: DW_TAG_member, name: "_vptr$B",
-// CHECKCOFF-SAME:           DIFlagArtificial
 
 // CHECK: [[C:![0-9]*]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "C",
 // CHECK-NOT:                              DIFlagFwdDecl
@@ -145,19 +137,19 @@ int main(int argc, char **argv) {
 // CHECK-SAME:                     DIFlagStaticMember
 // CHECK: [[C_DTOR]] = !DISubprogram(name: "~C"
 
-// CHECKELF: !DICompositeType(tag: DW_TAG_structure_type, name: "K"
-// CHECKELF-SAME:             identifier: "_ZTS1K"
-// CHECKELF-SAME:             ){{$}}
+// CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "K"
+// CHECK-SAME:             identifier: "_ZTS1K"
+// CHECK-SAME:             ){{$}}
 
-// CHECKELF: !DICompositeType(tag: DW_TAG_class_type, name: "B"
-// CHECKELF-NOT:              DIFlagFwdDecl
-// CHECKELF-SAME:             ){{$}}
-// CHECKELF: !DIDerivedType(tag: DW_TAG_member, name: "_vptr$B",
-// CHECKELF-SAME:           DIFlagArtificial
+// CHECK: !DICompositeType(tag: DW_TAG_class_type, name: "B"
+// CHECK-NOT:              DIFlagFwdDecl
+// CHECK-SAME:             ){{$}}
+// CHECK: !DIDerivedType(tag: DW_TAG_member, name: "_vptr$B",
+// CHECK-SAME:           DIFlagArtificial
 
-// CHECKELF: !DICompositeType(tag: DW_TAG_structure_type, name: "foo"
-// CHECKELF: !DICompositeType(tag: DW_TAG_class_type, name: "bar"
-// CHECKELF: !DICompositeType(tag: DW_TAG_union_type, name: "baz"
+// CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "foo"
+// CHECK: !DICompositeType(tag: DW_TAG_class_type, name: "bar"
+// CHECK: !DICompositeType(tag: DW_TAG_union_type, name: "baz"
 
 // CHECK: [[D:![0-9]+]] = !DICompositeType(tag: DW_TAG_structure_type, name: "D"
 // CHECK-SAME:             size:
@@ -170,10 +162,6 @@ int main(int argc, char **argv) {
 // CHECK-NOT:              identifier:
 // CHECK-SAME:             ){{$}}
 
-// CHECKCOFF: !DICompositeType(tag: DW_TAG_structure_type, name: "K"
-// CHECKCOFF-SAME:             identifier: "_ZTS1K"
-// CHECKCOFF-SAME:             ){{$}}
-
 // CHECK: [[L:![0-9]+]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "L"
 // CHECK-SAME:             ){{$}}
 // CHECK: [[L_FUNC_DECL:![0-9]*]] = !DISubprogram(name: "func",{{.*}} scope: [[L]]

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

@@ -18,7 +18,7 @@
 //   * Its '_vtable$' is NOT generated
 //  # when optimized even if no LLVM passes:
 //   * The vtable is declared as `available_externally` (which is potentially turned into `external` by LLVM passes)
-//   * Its '_vtable$' is generated
+//   * Its '_vtable$' is generated only if the compiler is targeting the non-COFF platforms
 
 struct CInlined {
   virtual void f1() noexcept {}
@@ -64,14 +64,20 @@ int main() {
 // 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
 // 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
 
+// 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
+// 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
+// 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
+// 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
+
 // CHECK-HAS-DTOR: $_ZTV8CInlined = comdat any
 // CHECK-HAS-DTOR-NOT: $_ZTV9CNoInline
 // CHECK-HAS-DTOR-NOT: $_ZTV8CNoFnDef
 
 // CHECK-HAS-DTOR-DAG: @_ZTV8CInlined = linkonce_odr {{.*}}constant {{{ \[[^]]*\] } { \[[^]]*\] \[[^]]*\] }}}, comdat, align 8, !dbg [[INLINED_VTABLE_VAR:![0-9]+]]
 // CHECK-HAS-DTOR-DAG: @_ZTV9CNoInline = {{.*}}constant {{{ \[[^]]*\] } { \[[^]]*\] \[[^]]*\] }}}, align 8, !dbg [[NOINLINE_VTABLE_VAR:![0-9]+]]
-// CHECK-HAS-DTOR-O0-DAG: @_ZTV8CNoFnDef = external {{.*}}constant {{{ \[[^]]*\] }}}, align 8{{$}}
-// CHECK-HAS-DTOR-O1-DAG: @_ZTV8CNoFnDef = available_externally {{.*}}constant {{{ \[[^]]*\] } { \[[^]]*\] \[[^]]*\] }}}, align 8, !dbg [[NOFNDEF_VTABLE_VAR:![0-9]+]]
+// CHECK-HAS-DTOR-O0-DAG:       @_ZTV8CNoFnDef = external {{.*}}constant {{{ \[[^]]*\] }}}, align 8{{$}}
+// CHECK-HAS-DTOR-O1-DAG:       @_ZTV8CNoFnDef = available_externally {{.*}}constant {{{ \[[^]]*\] } { \[[^]]*\] \[[^]]*\] }}}, align 8, !dbg [[NOFNDEF_VTABLE_VAR:![0-9]+]]
+// CHECK-HAS-DTOR-O1-NODBG-DAG: @_ZTV8CNoFnDef = available_externally {{.*}}constant {{{ \[[^]]*\] } { \[[^]]*\] \[[^]]*\] }}}, align 8{{$}}
 
 // CHECK-HAS-DTOR: !llvm.dbg.cu
 
@@ -94,8 +100,9 @@ int main() {
 
 // CHECK-NO-DTOR-DAG: @_ZTV8CInlined = external {{.*}}constant {{.*}}, align 8{{$}}
 // CHECK-NO-DTOR-DAG: @_ZTV9CNoInline = {{.*}}constant {{{ \[[^]]*\] } { \[[^]]*\] \[[^]]*\] }}}, align 8, !dbg [[NOINLINE_VTABLE_VAR:![0-9]+]]
-// CHECK-NO-DTOR-O0-DAG: @_ZTV8CNoFnDef = external {{.*}}constant {{{ \[[^]]*\] }}}, align 8{{$}}
-// CHECK-NO-DTOR-O1-DAG: @_ZTV8CNoFnDef = available_externally {{.*}}constant {{{ \[[^]]*\] } { \[[^]]*\] \[[^]]*\] }}}, align 8, !dbg [[NOFNDEF_VTABLE_VAR:![0-9]+]]
+// CHECK-NO-DTOR-O0-DAG:       @_ZTV8CNoFnDef = external {{.*}}constant {{{ \[[^]]*\] }}}, align 8{{$}}
+// CHECK-NO-DTOR-O1-DAG:       @_ZTV8CNoFnDef = available_externally {{.*}}constant {{{ \[[^]]*\] } { \[[^]]*\] \[[^]]*\] }}}, align 8, !dbg [[NOFNDEF_VTABLE_VAR:![0-9]+]]
+// CHECK-NO-DTOR-O1-NODBG-DAG: @_ZTV8CNoFnDef = available_externally {{.*}}constant {{{ \[[^]]*\] } { \[[^]]*\] \[[^]]*\] }}}, align 8{{$}}
 
 // CHECK-NO-DTOR: !llvm.dbg.cu
 

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

@@ -44,6 +44,8 @@ int main() {
 
 // RUN: %clang_cc1 -triple x86_64-linux -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O0 -disable-llvm-passes %s -o - | FileCheck %s
 // RUN: %clang_cc1 -triple x86_64-linux -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O1 -disable-llvm-passes %s -o - | FileCheck %s
+// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O0 -disable-llvm-passes %s -o - | FileCheck %s
+// 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: $_ZTVN3NSP5CBaseE = comdat any
 // CHECK: $_ZTVN5NSP_15CLeftE = comdat any

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

@@ -38,6 +38,8 @@ int main() {
 
 // RUN: %clang_cc1 -triple x86_64-linux -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O0 -disable-llvm-passes %s -o - | FileCheck %s
 // RUN: %clang_cc1 -triple x86_64-linux -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O1 -disable-llvm-passes %s -o - | FileCheck %s
+// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O0 -disable-llvm-passes %s -o - | FileCheck %s
+// 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: $_ZTVN5NSP_18CBaseOneE = comdat any
 // CHECK: $_ZTVN5NSP_28CBaseTwoE = comdat any

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

@@ -108,6 +108,30 @@ int main() {
 // RUN: llvm-link %t.simple-base.bc %t.simple-derived.bc %t.simple-main.bc -S -o %t.simple-combined.ll
 // RUN: FileCheck --input-file=%t.simple-combined.ll -check-prefix=CHECK-TWO %s
 
+// 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
+// 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
+// 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
+// RUN: llvm-link %t.simple-base.bc %t.simple-derived.bc %t.simple-main.bc -S -o %t.simple-combined.ll
+// RUN: FileCheck --input-file=%t.simple-combined.ll -check-prefix=CHECK-ONE %s
+
+// 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
+// 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
+// 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
+// RUN: llvm-link %t.simple-base.bc %t.simple-derived.bc %t.simple-main.bc -S -o %t.simple-combined.ll
+// RUN: FileCheck --input-file=%t.simple-combined.ll -check-prefix=CHECK-ONE %s
+
+// 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
+// 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
+// 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
+// RUN: llvm-link %t.simple-base.bc %t.simple-derived.bc %t.simple-main.bc -S -o %t.simple-combined.ll
+// RUN: FileCheck --input-file=%t.simple-combined.ll -check-prefix=CHECK-TWO %s
+
+// 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
+// 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
+// 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
+// RUN: llvm-link %t.simple-base.bc %t.simple-derived.bc %t.simple-main.bc -S -o %t.simple-combined.ll
+// RUN: FileCheck --input-file=%t.simple-combined.ll -check-prefix=CHECK-TWO %s
+
 // CHECK-ONE: ${{_ZN3NSP5CBaseC2Ev|_ZN8CDerivedC2Ev}} = comdat any
 // CHECK-ONE: ${{_ZN3NSP5CBaseC2Ev|_ZN8CDerivedC2Ev}} = comdat any
 

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

@@ -30,19 +30,14 @@ int main() {
 
 // RUN: %clang_cc1 -triple x86_64-linux -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O0 -disable-llvm-passes %s -o - | FileCheck %s
 // RUN: %clang_cc1 -triple x86_64-linux -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O1 -disable-llvm-passes %s -o - | FileCheck %s
-// 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
+// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O0 -disable-llvm-passes %s -o - | FileCheck %s
+// 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: $_ZTVN3NSP5CBaseE = comdat any
 // CHECK: $_ZTV8CDerived = comdat any
 
 // CHECK: @_ZTVN3NSP5CBaseE = linkonce_odr {{.*}}unnamed_addr constant {{.*}}, comdat, align 8, !dbg [[BASE_VTABLE_VAR:![0-9]*]]
 // CHECK: @_ZTV8CDerived = linkonce_odr {{.*}}unnamed_addr constant {{.*}}, comdat, align 8, !dbg [[DERIVED_VTABLE_VAR:![0-9]*]]
-// COFF: @_ZTVN3NSP5CBaseE = linkonce_odr {{.*}}unnamed_addr constant {{.*}}, comdat, align 8
-// COFF-NOT: !dbg
-// COFF-SAME: {{$}}
-// COFF: @_ZTV8CDerived = linkonce_odr {{.*}}unnamed_addr constant {{.*}}, comdat, align 8
-// COFF-NOT: !dbg
-// COFF-SAME: {{$}}
 
 // CHECK: [[BASE_VTABLE_VAR]] = !DIGlobalVariableExpression(var: [[BASE_VTABLE:![0-9]*]], expr: !DIExpression())
 // CHECK-NEXT: [[BASE_VTABLE]] = distinct !DIGlobalVariable(name: "_vtable$", linkageName: "_ZTVN3NSP5CBaseE"

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

@@ -44,6 +44,8 @@ int main() {
 
 // RUN: %clang_cc1 -triple x86_64-linux -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O0 -disable-llvm-passes %s -o - | FileCheck %s
 // RUN: %clang_cc1 -triple x86_64-linux -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O1 -disable-llvm-passes %s -o - | FileCheck %s
+// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm -debug-info-kind=limited -dwarf-version=5 -O0 -disable-llvm-passes %s -o - | FileCheck %s
+// 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: $_ZTVN3NSP5CBaseE = comdat any
 // CHECK: $_ZTVN5NSP_15CLeftE = comdat any