Range-for some LiveIntervals code under review

llvm-svn: 252267

1 files changed, 7 insertions, 9 deletions

diff --git a/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp b/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp
index 00047217917..8d9d984b5da 100644
--- a/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -222,19 +222,17 @@ void LiveIntervals::computeRegMasks() {
   RegMaskBlocks.resize(MF->getNumBlockIDs());
 
   // Find all instructions with regmask operands.
-  for (MachineFunction::iterator MBBI = MF->begin(), E = MF->end();
-       MBBI != E; ++MBBI) {
-    MachineBasicBlock *MBB = &*MBBI;
-    std::pair<unsigned, unsigned> &RMB = RegMaskBlocks[MBB->getNumber()];
+  for (MachineBasicBlock &MBB : *MF) {
+    std::pair<unsigned, unsigned> &RMB = RegMaskBlocks[MBB.getNumber()];
     RMB.first = RegMaskSlots.size();
-    for (MachineBasicBlock::iterator MI = MBB->begin(), ME = MBB->end();
-         MI != ME; ++MI)
-      for (const MachineOperand &MO : MI->operands()) {
+    for (MachineInstr &MI : MBB) {
+      for (const MachineOperand &MO : MI.operands()) {
         if (!MO.isRegMask())
           continue;
-          RegMaskSlots.push_back(Indexes->getInstructionIndex(MI).getRegSlot());
-          RegMaskBits.push_back(MO.getRegMask());
+        RegMaskSlots.push_back(Indexes->getInstructionIndex(&MI).getRegSlot());
+        RegMaskBits.push_back(MO.getRegMask());
       }
+    }
     // Compute the number of register mask instructions in this block.
     RMB.second = RegMaskSlots.size() - RMB.first;
   }