From: David Blaikie <dblaikie@gmail.com>
Date: Tue, 11 Mar 2014 23:35:06 +0000 (+0000)
Subject: DebugInfo: Do not emit pubnames/pubtypes sections if they are empty
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=1c7fef193f5d013e7e0e495c21122968273d0281;p=oota-llvm.git

DebugInfo: Do not emit pubnames/pubtypes sections if they are empty

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203622 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 45a90dc12d7..401145d923c 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -2215,6 +2215,9 @@ void DwarfDebug::emitDebugPubSection(
 
     const auto &Globals = (TheU->*Accessor)();
 
+    if (Globals.empty())
+      continue;
+
     if (auto Skeleton = static_cast<DwarfCompileUnit *>(TheU->getSkeleton()))
       TheU = Skeleton;
     unsigned ID = TheU->getUniqueID();
diff --git a/test/DebugInfo/empty.ll b/test/DebugInfo/empty.ll
index 2885eb51fcc..1fb18166146 100644
--- a/test/DebugInfo/empty.ll
+++ b/test/DebugInfo/empty.ll
@@ -12,10 +12,10 @@
 ; CHECK-NOT: file_names[
 
 ; CHECK: .debug_pubnames contents:
-; CHECK-NEXT: {{^$}}
+; CHECK-NOT: Offset
 
 ; CHECK: .debug_pubtypes contents:
-; CHECK-NEXT: {{^$}}
+; CHECK-NOT: Offset
 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!5}