Stuff

llvm-svn: 216787

1 files changed, 20 insertions, 6 deletions

diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 7f8d152a691..69cc8d8d695 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -751,6 +751,11 @@ void DwarfDebug::beginModule() {
   for (MDNode *N : CU_Nodes->operands()) {
     DICompileUnit CUNode(N);
     DwarfCompileUnit &CU = constructDwarfCompileUnit(CUNode);
+    DIArray SPs = CUNode.getSubprograms();
+    for (unsigned i = 0, e = SPs.getNumElements(); i != e; ++i)
+      SPMap.insert(std::make_pair(SPs.getElement(i), &CU));
+    if (CU.getCUNode().getEmissionKind() == DIBuilder::LineTablesOnly)
+      continue;
     DIArray ImportedEntities = CUNode.getImportedEntities();
     for (unsigned i = 0, e = ImportedEntities.getNumElements(); i != e; ++i)
       ScopesWithImportedEntities.push_back(std::make_pair(
@@ -761,9 +766,6 @@ void DwarfDebug::beginModule() {
     DIArray GVs = CUNode.getGlobalVariables();
     for (unsigned i = 0, e = GVs.getNumElements(); i != e; ++i)
       CU.createGlobalVariableDIE(DIGlobalVariable(GVs.getElement(i)));
-    DIArray SPs = CUNode.getSubprograms();
-    for (unsigned i = 0, e = SPs.getNumElements(); i != e; ++i)
-      SPMap.insert(std::make_pair(SPs.getElement(i), &CU));
     DIArray EnumTypes = CUNode.getEnumTypes();
     for (unsigned i = 0, e = EnumTypes.getNumElements(); i != e; ++i) {
       DIType Ty(EnumTypes.getElement(i));
@@ -833,12 +835,13 @@ void DwarfDebug::finishSubprogramDefinitions() {
           // If this subprogram has an abstract definition, reference that
           SPCU->addDIEEntry(*D, dwarf::DW_AT_abstract_origin, *AbsSPDIE);
       } else {
-        if (!D)
+        if (!D && TheCU.getEmissionKind() != DIBuilder::LineTablesOnly)
           // Lazily construct the subprogram if we didn't see either concrete or
           // inlined versions during codegen.
           D = SPCU->getOrCreateSubprogramDIE(SP);
-        // And attach the attributes
-        SPCU->applySubprogramAttributesToDefinition(SP, *D);
+        if (D)
+          // And attach the attributes
+          SPCU->applySubprogramAttributesToDefinition(SP, *D);
       }
     }
   }
@@ -1667,6 +1670,17 @@ void DwarfDebug::endFunction(const MachineFunction *MF) {
 
   LexicalScope *FnScope = LScopes.getCurrentFunctionScope();
   DwarfCompileUnit &TheCU = *SPMap.lookup(FnScope->getScopeNode());
+  if (TheCU.getCUNode().getEmissionKind() == DIBuilder::LineTablesOnly && LScopes.getAbstractScopesList().empty()) {
+    assert(ScopeVariables.empty());
+    assert(CurrentFnArguments.empty());
+    assert(DbgValues.empty());
+    assert(AbstractVariables.empty());
+    LabelsBeforeInsn.clear();
+    LabelsAfterInsn.clear();
+    PrevLabel = nullptr;
+    CurFn = nullptr;
+    return;
+  }
 
   // Construct abstract scopes.
   for (LexicalScope *AScope : LScopes.getAbstractScopesList()) {