Use range based for loops to avoid needing to re-mention SmallPtrSet size.

llvm-svn: 216351
diff --git a/llvm/lib/CodeGen/SjLjEHPrepare.cpp b/llvm/lib/CodeGen/SjLjEHPrepare.cpp
index 3a6c648..396fa52 100644
--- a/llvm/lib/CodeGen/SjLjEHPrepare.cpp
+++ b/llvm/lib/CodeGen/SjLjEHPrepare.cpp
@@ -351,10 +351,8 @@
       continue;
 
     // Demote the PHIs to the stack.
-    for (SmallPtrSet<PHINode *, 8>::iterator I = PHIsToDemote.begin(),
-                                             E = PHIsToDemote.end();
-         I != E; ++I)
-      DemotePHIToStack(*I);
+    for (PHINode *PN : PHIsToDemote)
+      DemotePHIToStack(PN);
 
     // Move the landingpad instruction back to the top of the landing pad block.
     LPI->moveBefore(UnwindBlock->begin());