Phase 2 of the great MachineRegisterInfo cleanup. This time, we're changing

operator* on the by-operand iterators to return a MachineOperand& rather than
a MachineInstr&.  At this point they almost behave like normal iterators!

Again, this requires making some existing loops more verbose, but should pave
the way for the big range-based for-loop cleanups in the future.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203865 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/PHIElimination.cpp

@@ -198,8 +198,9 @@ bool PHIElimination::EliminatePHINodes(MachineFunction &MF,
 /// This includes registers with no defs.
 static bool isImplicitlyDefined(unsigned VirtReg,
                                 const MachineRegisterInfo *MRI) {
-  for (MachineRegisterInfo::def_iterator DI = MRI->def_begin(VirtReg),
-       DE = MRI->def_end(); DI != DE; ++DI)
+  for (MachineRegisterInfo::def_instr_iterator
+       DI = MRI->def_instr_begin(VirtReg), DE = MRI->def_instr_end();
+       DI != DE; ++DI)
     if (!DI->isImplicitDef())
       return false;
   return true;