[DEBUGINFO] Do not output labels for empty macinfo sections.
Summary:
If there is no debug info for macros, do not emit labels for empty
macinfo sections.
Reviewers: probinson, echristo
Subscribers: aprantl, llvm-commits, JDevlieghere
Differential Revision: https://reviews.llvm.org/D43589
llvm-svn: 325803
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index dfb36fa..99ed096 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -2020,8 +2020,11 @@
auto *SkCU = TheCU.getSkeleton();
DwarfCompileUnit &U = SkCU ? *SkCU : TheCU;
auto *CUNode = cast<DICompileUnit>(P.first);
- Asm->OutStreamer->EmitLabel(U.getMacroLabelBegin());
- handleMacroNodes(CUNode->getMacros(), U);
+ DIMacroNodeArray Macros = CUNode->getMacros();
+ if (!Macros.empty()) {
+ Asm->OutStreamer->EmitLabel(U.getMacroLabelBegin());
+ handleMacroNodes(Macros, U);
+ }
}
Asm->OutStreamer->AddComment("End Of Macro List Mark");
Asm->EmitInt8(0);