use range-based for-loops; NFCI

llvm-svn: 237917

1 files changed, 2 insertions, 6 deletions

diff --git a/llvm/lib/CodeGen/MachineTraceMetrics.cpp b/llvm/lib/CodeGen/MachineTraceMetrics.cpp
index 5dc7c216994..e07250bf4f3 100644
--- a/llvm/lib/CodeGen/MachineTraceMetrics.cpp
+++ b/llvm/lib/CodeGen/MachineTraceMetrics.cpp
@@ -320,9 +320,7 @@ MinInstrCountEnsemble::pickTracePred(const MachineBasicBlock *MBB) {
   unsigned CurCount = MTM.getResources(MBB)->InstrCount;
   const MachineBasicBlock *Best = nullptr;
   unsigned BestDepth = 0;
-  for (MachineBasicBlock::const_pred_iterator
-       I = MBB->pred_begin(), E = MBB->pred_end(); I != E; ++I) {
-    const MachineBasicBlock *Pred = *I;
+  for (const MachineBasicBlock *Pred : MBB->predecessors()) {
     const MachineTraceMetrics::TraceBlockInfo *PredTBI =
       getDepthResources(Pred);
     // Ignore cycles that aren't natural loops.
@@ -344,9 +342,7 @@ MinInstrCountEnsemble::pickTraceSucc(const MachineBasicBlock *MBB) {
   const MachineLoop *CurLoop = getLoopFor(MBB);
   const MachineBasicBlock *Best = nullptr;
   unsigned BestHeight = 0;
-  for (MachineBasicBlock::const_succ_iterator
-       I = MBB->succ_begin(), E = MBB->succ_end(); I != E; ++I) {
-    const MachineBasicBlock *Succ = *I;
+  for (const MachineBasicBlock *Succ : MBB->successors()) {
     // Don't consider back-edges.
     if (CurLoop && Succ == CurLoop->getHeader())
       continue;