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-rw-r--r--llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp3
-rw-r--r--llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h4
2 files changed, 7 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index a9aa00cefc1..3a755306669 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -2105,6 +2105,8 @@ void DwarfDebug::emitDebugAbbrevDWO() {
void DwarfDebug::emitDebugLineDWO() {
assert(useSplitDwarf() && "No split dwarf?");
+ if (!HasSplitTypeUnits)
+ return;
Asm->OutStreamer->SwitchSection(
Asm->getObjFileLowering().getDwarfLineDWOSection());
SplitTypeUnitFileTable.Emit(*Asm->OutStreamer, MCDwarfLineTableParams());
@@ -2220,6 +2222,7 @@ void DwarfDebug::addDwarfTypeUnitType(DwarfCompileUnit &CU,
InfoHolder.computeSizeAndOffsetsForUnit(TU.first.get());
InfoHolder.emitUnit(TU.first.get(), useSplitDwarf());
}
+ HasSplitTypeUnits = useSplitDwarf();
}
CU.addDIETypeSignature(RefDie, Signature);
}
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
index 46d644657a8..e1de946f6f4 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
@@ -274,6 +274,10 @@ class DwarfDebug : public DebugHandlerBase {
/// a monolithic sequence of string offsets.
bool UseSegmentedStringOffsetsTable;
+ /// Whether we have emitted any type units with split DWARF (and therefore
+ /// need to emit a line table to the .dwo file).
+ bool HasSplitTypeUnits = false;
+
/// Separated Dwarf Variables
/// In general these will all be for bits that are left in the
/// original object file, rather than things that are meant
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