From c6f9d62eae02e11fbfe772e8e2c2e4d5ee5e4b13 Mon Sep 17 00:00:00 2001
From: Caroline Tice <ctice@apple.com>
Date: Fri, 11 Sep 2009 18:25:54 +0000
Subject: Don't generate Dwarf line table entries for source line 0.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81542 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/AsmPrinter/DwarfDebug.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 29446a427c..577f111ff6 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -494,6 +494,10 @@ void DwarfDebug::AddSourceLine(DIE *Die, const DISubprogram *SP) {
   // If there is no compile unit specified, don't add a line #.
   if (SP->getCompileUnit().isNull())
     return;
+  // If the line number is 0, don't add it.
+  if (SP->getLineNumber() == 0)
+    return;
+
 
   unsigned Line = SP->getLineNumber();
   unsigned FileID = FindCompileUnit(SP->getCompileUnit()).getID();
@@ -2394,6 +2398,8 @@ void DwarfDebug::EmitDebugLines() {
       unsigned LabelID = MMI->MappedLabel(LineInfo.getLabelID());
       if (!LabelID) continue;
 
+      if (LineInfo.getLine() == 0) continue;
+
       if (!Asm->isVerbose())
         Asm->EOL();
       else {
-- 
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