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Collect debug info for optimized variables of inlined functions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106895 91177308-0d34-0410-b5e6-96231b3b80d8
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135ec50ce2
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lib/CodeGen/AsmPrinter
@ -2159,8 +2159,9 @@ static bool isDbgValueInDefinedReg(const MachineInstr *MI) {
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}
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/// collectVariableInfo - Populate DbgScope entries with variables' info.
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void DwarfDebug::collectVariableInfo(const MachineFunction *MF) {
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SmallPtrSet<const MDNode *, 16> Processed;
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void
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DwarfDebug::collectVariableInfo(const MachineFunction *MF,
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SmallPtrSet<const MDNode *, 16> &Processed) {
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/// collection info from MMI table.
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collectVariableInfoFromMMITable(MF, Processed);
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@ -2367,6 +2368,7 @@ DbgScope *DwarfDebug::getOrCreateDbgScope(const MDNode *Scope, const MDNode *Inl
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return WScope;
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}
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getOrCreateAbstractScope(Scope);
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DbgScope *WScope = DbgScopeMap.lookup(InlinedAt);
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if (WScope)
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return WScope;
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@ -2380,7 +2382,6 @@ DbgScope *DwarfDebug::getOrCreateDbgScope(const MDNode *Scope, const MDNode *Inl
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Parent->addScope(WScope);
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ConcreteScopes[InlinedAt] = WScope;
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getOrCreateAbstractScope(Scope);
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return WScope;
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}
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@ -2693,7 +2694,8 @@ void DwarfDebug::endFunction(const MachineFunction *MF) {
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// Assumes in correct section after the entry point.
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Asm->OutStreamer.EmitLabel(FunctionEndSym);
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collectVariableInfo(MF);
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SmallPtrSet<const MDNode *, 16> ProcessedVars;
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collectVariableInfo(MF, ProcessedVars);
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// Get function line info.
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if (!Lines.empty()) {
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@ -2708,8 +2710,29 @@ void DwarfDebug::endFunction(const MachineFunction *MF) {
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// Construct abstract scopes.
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for (SmallVector<DbgScope *, 4>::iterator AI = AbstractScopesList.begin(),
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AE = AbstractScopesList.end(); AI != AE; ++AI)
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AE = AbstractScopesList.end(); AI != AE; ++AI) {
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constructScopeDIE(*AI);
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DISubprogram SP((*AI)->getScopeNode());
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if (SP.Verify()) {
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// Collect info for variables that were optimized out.
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StringRef FName = SP.getLinkageName();
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if (FName.empty())
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FName = SP.getName();
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const Module *M = MF->getFunction()->getParent();
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if (NamedMDNode *NMD =
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M->getNamedMetadata(Twine("llvm.dbg.lv.",
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getRealLinkageName(FName)))) {
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for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
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DIVariable DV(cast_or_null<MDNode>(NMD->getOperand(i)));
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if (!DV || !ProcessedVars.insert(DV))
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continue;
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DbgScope *Scope = DbgScopeMap.lookup(DV.getContext());
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if (Scope)
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Scope->addVariable(new DbgVariable(DV));
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}
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}
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}
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}
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DIE *CurFnDIE = constructScopeDIE(CurrentFnDbgScope);
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@ -590,7 +590,8 @@ private:
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bool extractScopeInformation();
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/// collectVariableInfo - Populate DbgScope entries with variables' info.
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void collectVariableInfo(const MachineFunction *);
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void collectVariableInfo(const MachineFunction *,
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SmallPtrSet<const MDNode *, 16> &ProcessedVars);
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/// collectVariableInfoFromMMITable - Collect variable information from
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/// side table maintained by MMI.
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