[C++11] Add predecessors(BasicBlock *) / successors(BasicBlock *) iterator ranges.

Summary: This patch introduces two new iterator ranges and updates existing code to use it.  No functional change intended.

Test Plan: All tests (make check-all) still pass.

Reviewers: dblaikie

Reviewed By: dblaikie

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D4481

llvm-svn: 213474

1 files changed, 2 insertions, 3 deletions

diff --git a/llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp b/llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp
index a96c46ad63e..ce420ee4bf0 100644
--- a/llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp
+++ b/llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp
@@ -66,9 +66,8 @@ static void ConnectProlog(Loop *L, Value *TripCount, unsigned Count,
   // The new PHI node is inserted in the prolog end basic block.
   // The new PHI name is added as an operand of a PHI node in either
   // the loop header or the loop exit block.
-  for (succ_iterator SBI = succ_begin(Latch), SBE = succ_end(Latch);
-       SBI != SBE; ++SBI) {
-    for (BasicBlock::iterator BBI = (*SBI)->begin();
+  for (BasicBlock *Succ : successors(Latch)) {
+    for (BasicBlock::iterator BBI = Succ->begin();
          PHINode *PN = dyn_cast<PHINode>(BBI); ++BBI) {
 
       // Add a new PHI node to the prolog end block and add the