MachineBasicBlock: Add liveins() method returning an iterator_range
llvm-svn: 245895
diff --git a/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp b/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp
index 9738dac..eaa4b5b 100644
--- a/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -305,9 +305,8 @@
// Create phi-defs at Begin for all live-in registers.
SlotIndex Begin = Indexes->getMBBStartIdx(MBB);
DEBUG(dbgs() << Begin << "\tBB#" << MBB->getNumber());
- for (MachineBasicBlock::livein_iterator LII = MBB->livein_begin(),
- LIE = MBB->livein_end(); LII != LIE; ++LII) {
- for (MCRegUnitIterator Units(*LII, TRI); Units.isValid(); ++Units) {
+ for (unsigned LI : MBB->liveins()) {
+ for (MCRegUnitIterator Units(LI, TRI); Units.isValid(); ++Units) {
unsigned Unit = *Units;
LiveRange *LR = RegUnitRanges[Unit];
if (!LR) {