diff options
Diffstat (limited to 'lib/CodeGen/AsmPrinter/DwarfDebug.cpp')
-rw-r--r-- | lib/CodeGen/AsmPrinter/DwarfDebug.cpp | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp index aeaa63f2af..73bba6989f 100644 --- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp +++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp @@ -708,6 +708,12 @@ CompileUnit *DwarfDebug::constructCompileUnit(const MDNode *N) { Asm->OutStreamer.getContext().setMCLineTableSymbol(LineTableStartSym, NewCU->getUniqueID()); + // Use a single line table if we are using .loc and generating assembly. + bool UseTheFirstCU = + (Asm->TM.hasMCUseLoc() && + Asm->OutStreamer.getKind() == MCStreamer::SK_AsmStreamer) || + (NewCU->getUniqueID() == 0); + // DW_AT_stmt_list is a offset of line number information for this // compile unit in debug_line section. For split dwarf this is // left in the skeleton CU and so not included. @@ -716,9 +722,9 @@ CompileUnit *DwarfDebug::constructCompileUnit(const MDNode *N) { if (!useSplitDwarf()) { if (Asm->MAI->doesDwarfUseRelocationsAcrossSections()) NewCU->addLabel(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_data4, - NewCU->getUniqueID() == 0 ? + UseTheFirstCU ? Asm->GetTempSymbol("section_line") : LineTableStartSym); - else if (NewCU->getUniqueID() == 0) + else if (UseTheFirstCU) NewCU->addUInt(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_data4, 0); else NewCU->addDelta(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_data4, @@ -1441,7 +1447,12 @@ void DwarfDebug::beginFunction(const MachineFunction *MF) { LexicalScope *FnScope = LScopes.getCurrentFunctionScope(); CompileUnit *TheCU = SPMap.lookup(FnScope->getScopeNode()); assert(TheCU && "Unable to find compile unit!"); - Asm->OutStreamer.getContext().setDwarfCompileUnitID(TheCU->getUniqueID()); + if (Asm->TM.hasMCUseLoc() && + Asm->OutStreamer.getKind() == MCStreamer::SK_AsmStreamer) + // Use a single line table if we are using .loc and generating assembly. + Asm->OutStreamer.getContext().setDwarfCompileUnitID(0); + else + Asm->OutStreamer.getContext().setDwarfCompileUnitID(TheCU->getUniqueID()); FunctionBeginSym = Asm->GetTempSymbol("func_begin", Asm->getFunctionNumber()); |