1 files changed, 5 insertions, 7 deletions
diff --git a/lib/Target/R600/AMDILCFGStructurizer.cpp b/lib/Target/R600/AMDILCFGStructurizer.cpp
index 21ca560dba..1b458df294 100644
--- a/lib/Target/R600/AMDILCFGStructurizer.cpp
+++ b/lib/Target/R600/AMDILCFGStructurizer.cpp
@@ -1075,13 +1075,11 @@ int AMDGPUCFGStructurizer::ifPatternMatch(MachineBasicBlock *MBB) {
 
 int AMDGPUCFGStructurizer::loopendPatternMatch() {
   std::vector<MachineLoop *> NestedLoops;
-  for (MachineLoopInfo::iterator It = MLI->begin(), E = MLI->end();
-      It != E; ++It) {
-    df_iterator<MachineLoop *> LpIt = df_begin(*It),
-        LpE = df_end(*It);
-    for (; LpIt != LpE; ++LpIt)
-      NestedLoops.push_back(*LpIt);
-  }
+  for (MachineLoopInfo::iterator It = MLI->begin(), E = MLI->end(); It != E;
+       ++It)
+    for (MachineLoop *ML : depth_first(*It))
+      NestedLoops.push_back(ML);
+
   if (NestedLoops.size() == 0)
     return 0;