From: David Blaikie <dblaikie@gmail.com>
Date: Sat, 15 Jun 2013 00:33:47 +0000 (+0000)
Subject: Debug Info: Don't print the display name and colon prefix for DEBUG_VALUE comments... 
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=702ff96ff3157e0761d206cca2dc0a4c3e7c13a9;p=oota-llvm.git

Debug Info: Don't print the display name and colon prefix for DEBUG_VALUE comments if the display name is empty

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184026 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index 69ff3290573..7f4ba7a0d93 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -562,8 +562,11 @@ static bool emitDebugValueComment(const MachineInstr *MI, AsmPrinter &AP) {
 
   // cast away const; DIetc do not take const operands for some reason.
   DIVariable V(const_cast<MDNode*>(MI->getOperand(2).getMetadata()));
-  if (V.getContext().isSubprogram())
-    OS << DISubprogram(V.getContext()).getDisplayName() << ":";
+  if (V.getContext().isSubprogram()) {
+    StringRef Name = DISubprogram(V.getContext()).getDisplayName();
+    if (!Name.empty())
+      OS << Name << ":";
+  }
   OS << V.getName() << " <- ";
 
   // Register or immediate value. Register 0 means undef.
diff --git a/test/CodeGen/X86/dbg-value-terminator.ll b/test/CodeGen/X86/dbg-value-terminator.ll
index ed0b2129a7b..e7c12507d80 100644
--- a/test/CodeGen/X86/dbg-value-terminator.ll
+++ b/test/CodeGen/X86/dbg-value-terminator.ll
@@ -6,7 +6,7 @@
 ; terminator.
 ;
 ; CHECK: test:
-; CHECK: ##DEBUG_VALUE: :i
+; CHECK: ##DEBUG_VALUE: i
 %a = type { i32, i32 }
 
 define hidden fastcc %a* @test() #1 {