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Do not try to emit debug info entry for dead global variable.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86212 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel
2009-11-06 01:30:04 +00:00
parent 42046abd1f
commit 465c3bed16
2 changed files with 23 additions and 1 deletions
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7
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
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@ -1097,6 +1097,10 @@ DIE *DwarfDebug::ConstructEnumTypeDIE(CompileUnit *DW_Unit, DIEnumerator *ETy) {
/// 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 @@ void DwarfDebug::ConstructFunctionDbgScope(DbgScope *RootScope,
DIGlobalVariable GV(N);
if (GV.getContext().getNode() == RootScope->getDesc().getNode()) {
DIE *ScopedGVDie = CreateGlobalVariableDIE(ModuleCU, GV);
SPDie->AddChild(ScopedGVDie);
if (ScopedGVDie)
SPDie->AddChild(ScopedGVDie);
}
}
}