r303222 - Fix scope of namespaced DISubprograms when the function definition is out-of-line.

[Adrian Prantl via cfe-commits]

Author: adrian
Date: Tue May 16 18:46:10 2017
New Revision: 303222

URL: http://llvm.org/viewvc/llvm-project?rev=303222&view=rev
Log:
Fix scope of namespaced DISubprograms when the function definition is out-of-line.
This fixes a regression introduced in r302915.

Using the lexical decl context is not necessary here for what r302915
wast trying to achieve. Not canonicalizing the NamespaceDecl in
getOrCreateNamespace is suficient.

rdar://problem/29339538

Modified:
    cfe/trunk/lib/CodeGen/CGDebugInfo.cpp
    cfe/trunk/test/CodeGenCXX/debug-info-namespace.cpp

Modified: cfe/trunk/lib/CodeGen/CGDebugInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGDebugInfo.cpp?rev=303222&r1=303221&r2=303222&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/CGDebugInfo.cpp (original)
+++ cfe/trunk/lib/CodeGen/CGDebugInfo.cpp Tue May 16 18:46:10 2017
@@ -2860,7 +2860,7 @@ void CGDebugInfo::collectFunctionDeclPro
 
   if (DebugKind >= codegenoptions::LimitedDebugInfo) {
     if (const NamespaceDecl *NSDecl =
-        dyn_cast_or_null<NamespaceDecl>(FD->getLexicalDeclContext()))
+        dyn_cast_or_null<NamespaceDecl>(FD->getDeclContext()))
       FDContext = getOrCreateNamespace(NSDecl);
     else if (const RecordDecl *RDecl =
              dyn_cast_or_null<RecordDecl>(FD->getDeclContext())) {

Modified: cfe/trunk/test/CodeGenCXX/debug-info-namespace.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCXX/debug-info-namespace.cpp?rev=303222&r1=303221&r2=303222&view=diff
==============================================================================
--- cfe/trunk/test/CodeGenCXX/debug-info-namespace.cpp (original)
+++ cfe/trunk/test/CodeGenCXX/debug-info-namespace.cpp Tue May 16 18:46:10 2017
@@ -60,6 +60,10 @@ void B::func_fwd() {
   anonymous = 0;
 }
 
+namespace C {
+  void c();
+}
+void C::c() {}
 
 // This should work even if 'i' and 'func' were declarations & not definitions,
 // but it doesn't yet.
@@ -114,6 +118,8 @@ void B::func_fwd() {
 // CHECK: [[M16]] = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: [[FUNC]], entity: [[FUNC_FWD:![0-9]+]]
 // CHECK: [[FUNC_FWD]] = distinct !DISubprogram(name: "func_fwd",{{.*}} line: 53,{{.*}} isDefinition: true
 // CHECK: [[M17]] = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: [[CTXT]], entity: [[I]]
+// CHECK: distinct !DISubprogram(name: "c",{{.*}}, scope: ![[C:[0-9]+]],{{.*}}, line: 60,{{.*}} isDefinition: true
+// CHECK: ![[C]] = !DINamespace(name: "C",
 
 // CHECK-GMLT: [[CU:![0-9]+]] = distinct !DICompileUnit(
 // CHECK-GMLT-SAME:                            emissionKind: LineTablesOnly,