Memdep says that an instruction clobbers itself

when it means there is no specific clobber instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116960 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Analysis/MemDepPrinter.cpp b/lib/Analysis/MemDepPrinter.cpp
index 841f4b6b4adfd323a2434e2c88d2b155f3daf22e..597daff8db2b825a87b9680d784ab1d207ff2143 100644 (file)
--- a/lib/Analysis/MemDepPrinter.cpp
+++ b/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";
     }