From 1b85604130ce4a4e4630b82270160a8cb2efbc93 Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Wed, 20 Oct 2010 22:37:41 +0000
Subject: Memdep says that an instruction clobbers itself when it means there
 is no specific clobber instruction.

llvm-svn: 116960
---
 llvm/lib/Analysis/MemDepPrinter.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'llvm/lib/Analysis/MemDepPrinter.cpp')

diff --git a/llvm/lib/Analysis/MemDepPrinter.cpp b/llvm/lib/Analysis/MemDepPrinter.cpp
index 841f4b6b4ad..597daff8db2 100644
--- a/llvm/lib/Analysis/MemDepPrinter.cpp
+++ b/llvm/lib/Analysis/MemDepPrinter.cpp
@@ -150,7 +150,10 @@ void MemDepPrinter::print(raw_ostream &OS, const Module *M) const {
         WriteAsOperand(OS, DepBB, /*PrintType=*/false, M);
       }
       OS << " from: ";
-      DepInst->print(OS);
+      if (DepInst == Inst)
+        OS << "<unspecified>";
+      else
+        DepInst->print(OS);
       OS << "\n";
     }
 
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