[llvm] Use pop_back_val (NFC)

1 files changed, 2 insertions, 4 deletions

diff --git a/llvm/lib/CodeGen/LiveVariables.cpp b/llvm/lib/CodeGen/LiveVariables.cpp
index 7181dbc..300a905 100644
--- a/llvm/lib/CodeGen/LiveVariables.cpp
+++ b/llvm/lib/CodeGen/LiveVariables.cpp
@@ -119,8 +119,7 @@ void LiveVariables::MarkVirtRegAliveInBlock(VarInfo &VRInfo,
   MarkVirtRegAliveInBlock(VRInfo, DefBlock, MBB, WorkList);
 
   while (!WorkList.empty()) {
-    MachineBasicBlock *Pred = WorkList.back();
-    WorkList.pop_back();
+    MachineBasicBlock *Pred = WorkList.pop_back_val();
     MarkVirtRegAliveInBlock(VRInfo, DefBlock, Pred, WorkList);
   }
 }
@@ -484,8 +483,7 @@ void LiveVariables::HandlePhysRegDef(Register Reg, MachineInstr *MI,
 void LiveVariables::UpdatePhysRegDefs(MachineInstr &MI,
                                       SmallVectorImpl<unsigned> &Defs) {
   while (!Defs.empty()) {
-    Register Reg = Defs.back();
-    Defs.pop_back();
+    Register Reg = Defs.pop_back_val();
     for (MCSubRegIterator SubRegs(Reg, TRI, /*IncludeSelf=*/true);
          SubRegs.isValid(); ++SubRegs) {
       unsigned SubReg = *SubRegs;