CodeGen/AsmPrinter/DwarfDebug.cpp

1335 static bool isDbgValueInDefinedReg(const MachineInstr *MI) {
1336   assert(MI->isDebugValue() && "Invalid DBG_VALUE machine instruction!");
1337   return MI->getNumOperands() == 3 &&
1338          MI->getOperand(0).isReg() && MI->getOperand(0).getReg() &&
1339          (MI->getOperand(1).isImm() ||
1340           (MI->getOperand(1).isReg() && MI->getOperand(1).getReg() == 0U));
1343 // Get .debug_loc entry for the instruction range starting at MI.
1347                                          const MachineInstr *MI) {
1348   const MDNode *Var =  MI->getOperand(MI->getNumOperands() - 1).getMetadata();
1350   assert(MI->getNumOperands() == 3);
1351   if (MI->getOperand(0).isReg()) {
1355     if (!MI->getOperand(1).isImm())
1356       MLoc.set(MI->getOperand(0).getReg());
1358       MLoc.set(MI->getOperand(0).getReg(), MI->getOperand(1).getImm());
1361   if (MI->getOperand(0).isImm())
1362     return DotDebugLocEntry(FLabel, SLabel, MI->getOperand(0).getImm());
1363   if (MI->getOperand(0).isFPImm())
1364     return DotDebugLocEntry(FLabel, SLabel, MI->getOperand(0).getFPImm());
1365   if (MI->getOperand(0).isCImm())
1366     return DotDebugLocEntry(FLabel, SLabel, MI->getOperand(0).getCImm());
1477 MCSymbol *DwarfDebug::getLabelBeforeInsn(const MachineInstr *MI) {
1478   MCSymbol *Label = LabelsBeforeInsn.lookup(MI);
1484 MCSymbol *DwarfDebug::getLabelAfterInsn(const MachineInstr *MI) {
1485   return LabelsAfterInsn.lookup(MI);
1489 void DwarfDebug::beginInstruction(const MachineInstr *MI) {
1491   if (!MI->isDebugValue()) {
1492     DebugLoc DL = MI->getDebugLoc();
1513     LabelsBeforeInsn.find(MI);
1531 void DwarfDebug::endInstruction(const MachineInstr *MI) {
1534   if (!MI->isDebugValue())
1538     LabelsAfterInsn.find(MI);
1657       const MachineInstr *MI = II;
1659       if (MI->isDebugValue()) {
1660         assert(MI->getNumOperands() > 1 && "Invalid machine instruction!");
1664             MI->getOperand(MI->getNumOperands() - 1).getMetadata();
1667         if (isDbgValueInDefinedReg(MI))
1668           LiveUserVar[MI->getOperand(0).getReg()] = Var;
1679             LabelsBeforeInsn[MI] = FunctionBeginSym;
1693             // Terminate old register assignments that don't reach MI;
1712         History.push_back(MI);
1715         if (!MI->isLabel())
1720         if (!MI->getFlag(MachineInstr::FrameSetup) &&
1721             (PrologEndLoc.isUnknown() && !MI->getDebugLoc().isUnknown()))
1722           PrologEndLoc = MI->getDebugLoc();
1725         for (MachineInstr::const_mop_iterator MOI = MI->operands_begin(),
1726                                               MOE = MI->operands_end();
1749             if (!Prev->isDebugValue() || Prev->getParent() != MI->getParent())
1756             History.push_back(MI);
1785       const MachineInstr *MI = History[i];
1786       if (MI->isDebugValue())
1787         requestLabelBeforeInsn(MI);
1789         requestLabelAfterInsn(MI);