- << " if (!CurDL.isUnknown() && PrevDL != CurDL) {\n"
- << " DebugLocTuple DLT = MF->getDebugLocTuple(CurDL);\n"
- << " printLabel(DW->RecordSourceLine(DLT.Line, DLT.Col, DLT.Src));\n"
- << " }\n\n"
- << " PrevDL = CurDL;\n"
- << " }\n";
+ << " if (!CurDL.isUnknown()) {\n"
+ << " static DebugLocTuple PrevDLT(~0U, ~0U, ~0U);\n"
+ << " DebugLocTuple CurDLT = MF->getDebugLocTuple(CurDL);\n\n"
+ << " if (PrevDLT.Src != ~0U && PrevDLT != CurDLT)\n"
+ << " printLabel(DW->RecordSourceLine(CurDLT.Line, CurDLT.Col,\n"
+ << " CurDLT.Src));\n\n"
+ << " PrevDLT = CurDLT;\n"
+ << " }\n"
+ << " }\n\n";