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Module Debugging: Don't emit external type references to anonymous types. 

Even if they exist in the module, they can't be matched with the forward
declaration in the object file.
<rdar://problem/24199640>

llvm-svn: 258251
This commit is contained in:
Adrian Prantl 2016-01-19 23:42:53 +00:00
parent cd975018fe
commit 43e0081740
2 changed files with 12 additions and 2 deletions
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5
clang/lib/CodeGen/CGDebugInfo.cpp
View File

@ -1536,8 +1536,9 @@ static bool shouldOmitDefinition(CodeGenOptions::DebugInfoKind DebugKind,
const RecordDecl *RD,
const LangOptions &LangOpts) {
// Does the type exist in an imported clang module?
if (DebugTypeExtRefs && RD->isFromASTFile() && RD->getDefinition())
return true;
if (DebugTypeExtRefs && RD->isFromASTFile() && RD->getDefinition() &&
RD->isExternallyVisible())
return true;
if (DebugKind > CodeGenOptions::LimitedDebugInfo)
return false;

9
clang/test/Modules/ExtDebugInfo.cpp
View File

@ -84,4 +84,13 @@ void foo() {
// CHECK: !DICompositeType(tag: DW_TAG_enumeration_type, scope: ![[NS]],
// CHECK-SAME: line: 16
// CHECK: !DIGlobalVariable(name: "GlobalUnion",
// CHECK-SAME: type: ![[GLOBAL_UNION:[0-9]+]]
// CHECK: ![[GLOBAL_UNION]] = !DICompositeType(tag: DW_TAG_union_type,
// CHECK-SAME: elements: !{{[0-9]+}})
// CHECK: !DIGlobalVariable(name: "GlobalStruct",
// CHECK-SAME: type: ![[GLOBAL_STRUCT:[0-9]+]]
// CHECK: ![[GLOBAL_STRUCT]] = !DICompositeType(tag: DW_TAG_structure_type,
// CHECK-SAME: elements: !{{[0-9]+}})
// CHECK: !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !0, entity: !"_ZTSN8DebugCXX6StructE", line: 24)