1 files changed, 10 insertions, 14 deletions

diff --git a/llvm/lib/Transforms/Scalar/Reg2Mem.cpp b/llvm/lib/Transforms/Scalar/Reg2Mem.cpp
index 5ee2070d86c..615029dd161 100644
--- a/llvm/lib/Transforms/Scalar/Reg2Mem.cpp
+++ b/llvm/lib/Transforms/Scalar/Reg2Mem.cpp
@@ -89,10 +89,9 @@ bool RegToMem::runOnFunction(Function &F) {
   // Find the escaped instructions. But don't create stack slots for
   // allocas in entry block.
   std::list<Instruction*> WorkList;
-  for (Function::iterator ibb = F.begin(), ibe = F.end();
-       ibb != ibe; ++ibb)
-    for (BasicBlock::iterator iib = ibb->begin(), iie = ibb->end();
-         iib != iie; ++iib) {
+  for (BasicBlock &ibb : F)
+    for (BasicBlock::iterator iib = ibb.begin(), iie = ibb.end(); iib != iie;
+         ++iib) {
       if (!(isa<AllocaInst>(iib) && iib->getParent() == BBEntry) &&
           valueEscapes(&*iib)) {
         WorkList.push_front(&*iib);
@@ -101,25 +100,22 @@ bool RegToMem::runOnFunction(Function &F) {
 
   // Demote escaped instructions
   NumRegsDemoted += WorkList.size();
-  for (std::list<Instruction*>::iterator ilb = WorkList.begin(),
-       ile = WorkList.end(); ilb != ile; ++ilb)
-    DemoteRegToStack(**ilb, false, AllocaInsertionPoint);
+  for (Instruction *ilb : WorkList)
+    DemoteRegToStack(*ilb, false, AllocaInsertionPoint);
 
   WorkList.clear();
 
   // Find all phi's
-  for (Function::iterator ibb = F.begin(), ibe = F.end();
-       ibb != ibe; ++ibb)
-    for (BasicBlock::iterator iib = ibb->begin(), iie = ibb->end();
-         iib != iie; ++iib)
+  for (BasicBlock &ibb : F)
+    for (BasicBlock::iterator iib = ibb.begin(), iie = ibb.end(); iib != iie;
+         ++iib)
       if (isa<PHINode>(iib))
         WorkList.push_front(&*iib);
 
   // Demote phi nodes
   NumPhisDemoted += WorkList.size();
-  for (std::list<Instruction*>::iterator ilb = WorkList.begin(),
-       ile = WorkList.end(); ilb != ile; ++ilb)
-    DemotePHIToStack(cast<PHINode>(*ilb), AllocaInsertionPoint);
+  for (Instruction *ilb : WorkList)
+    DemotePHIToStack(cast<PHINode>(ilb), AllocaInsertionPoint);
 
   return true;
 }