MachineBasicBlock: Add liveins() method returning an iterator_range

llvm-svn: 245895

1 files changed, 5 insertions, 9 deletions

diff --git a/llvm/lib/CodeGen/MachineVerifier.cpp b/llvm/lib/CodeGen/MachineVerifier.cpp
index dc16772..078e576 100644
--- a/llvm/lib/CodeGen/MachineVerifier.cpp
+++ b/llvm/lib/CodeGen/MachineVerifier.cpp
@@ -507,11 +507,8 @@ MachineVerifier::visitMachineBasicBlockBefore(const MachineBasicBlock *MBB) {
   if (MRI->isSSA()) {
     // If this block has allocatable physical registers live-in, check that
     // it is an entry block or landing pad.
-    for (MachineBasicBlock::livein_iterator LI = MBB->livein_begin(),
-           LE = MBB->livein_end();
-         LI != LE; ++LI) {
-      unsigned reg = *LI;
-      if (isAllocatable(reg) && !MBB->isLandingPad() &&
+    for (unsigned LI : MBB->liveins()) {
+      if (isAllocatable(LI) && !MBB->isLandingPad() &&
           MBB != MBB->getParent()->begin()) {
         report("MBB has allocable live-in, but isn't entry or landing-pad.", MBB);
       }
@@ -680,13 +677,12 @@ MachineVerifier::visitMachineBasicBlockBefore(const MachineBasicBlock *MBB) {
   }
 
   regsLive.clear();
-  for (MachineBasicBlock::livein_iterator I = MBB->livein_begin(),
-         E = MBB->livein_end(); I != E; ++I) {
-    if (!TargetRegisterInfo::isPhysicalRegister(*I)) {
+  for (unsigned LI : MBB->liveins()) {
+    if (!TargetRegisterInfo::isPhysicalRegister(LI)) {
       report("MBB live-in list contains non-physical register", MBB);
       continue;
     }
-    for (MCSubRegIterator SubRegs(*I, TRI, /*IncludeSelf=*/true);
+    for (MCSubRegIterator SubRegs(LI, TRI, /*IncludeSelf=*/true);
          SubRegs.isValid(); ++SubRegs)
       regsLive.insert(*SubRegs);
   }