an attempt to salvage the darwin9-powerpc buildbot, which could be miscompiling this line

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113876 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMBaseInstrInfo.cpp b/lib/Target/ARM/ARMBaseInstrInfo.cpp
index 05870b8..80c9143 100644
--- a/lib/Target/ARM/ARMBaseInstrInfo.cpp
+++ b/lib/Target/ARM/ARMBaseInstrInfo.cpp
@@ -1373,7 +1373,7 @@
     CmpValue = MI->getOperand(1).getImm();
     return true;
   case ARM::TSTri: {
-      if (MI->getParent()->begin() == MachineBasicBlock::const_iterator(MI))
+      if (&*MI->getParent()->begin() == MI)
         return false;
       const MachineInstr *AND = llvm::prior(MI);
       if (AND->getOpcode() != ARM::ANDri)
@@ -1385,6 +1385,7 @@
         return true;
       }
     }
+    break;
   }
 
   return false;