[llvm-commits] [llvm] r137985 - /llvm/trunk/lib/Transforms/Scalar/ObjCARC.cpp

[Dan Gohman]

Author: djg
Date: Thu Aug 18 16:27:42 2011
New Revision: 137985

URL: http://llvm.org/viewvc/llvm-project?rev=137985&view=rev
Log:
Make it clear that this code is iterating in reverse order through the array.

Modified:
    llvm/trunk/lib/Transforms/Scalar/ObjCARC.cpp

Modified: llvm/trunk/lib/Transforms/Scalar/ObjCARC.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/ObjCARC.cpp?rev=137985&r1=137984&r2=137985&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/ObjCARC.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/ObjCARC.cpp Thu Aug 18 16:27:42 2011
@@ -2596,8 +2596,9 @@
     Order.push_back(Stack.pop_back_val().first);
   }
   bool BottomUpNestingDetected = false;
-  while (!Order.empty()) {
-    BasicBlock *BB = Order.pop_back_val();
+  for (SmallVectorImpl<BasicBlock *>::const_reverse_iterator I =
+         Order.rbegin(), E = Order.rend(); I != E; ++I) {
+    BasicBlock *BB = *I;
     BottomUpNestingDetected |= VisitBottomUp(BB, BBStates, Retains);
   }