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-rw-r--r--llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index a2dc8c839c7..e731542d419 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -252,6 +252,8 @@ DwarfDebug::DwarfDebug(AsmPrinter *A, Module *M)
unsigned DwarfVersionNumber = Asm->TM.Options.MCOptions.DwarfVersion;
DwarfVersion = DwarfVersionNumber ? DwarfVersionNumber
: MMI->getModule()->getDwarfVersion();
+ // Use dwarf 4 by default if nothing is requested.
+ DwarfVersion = DwarfVersion ? DwarfVersion : dwarf::DWARF_VERSION;
// Work around a GDB bug. GDB doesn't support the standard opcode;
// SCE doesn't support GNU's; LLDB prefers the standard opcode, which
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