Do not try to emit debug info entry for dead global variable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86212 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 1372fc2..6b54e61 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -1097,6 +1097,10 @@
/// CreateGlobalVariableDIE - Create new DIE using GV.
DIE *DwarfDebug::CreateGlobalVariableDIE(CompileUnit *DW_Unit,
const DIGlobalVariable &GV) {
+ // If the global variable was optmized out then no need to create debug info entry.
+ if (!GV.getGlobal())
+ return NULL;
+
DIE *GVDie = new DIE(dwarf::DW_TAG_variable);
AddString(GVDie, dwarf::DW_AT_name, dwarf::DW_FORM_string,
GV.getDisplayName());
@@ -1518,7 +1522,8 @@
DIGlobalVariable GV(N);
if (GV.getContext().getNode() == RootScope->getDesc().getNode()) {
DIE *ScopedGVDie = CreateGlobalVariableDIE(ModuleCU, GV);
- SPDie->AddChild(ScopedGVDie);
+ if (ScopedGVDie)
+ SPDie->AddChild(ScopedGVDie);
}
}
}