Rename canCombinedSubRegIndex method to something more grammatically correct
and tidy up the comment describing it.

llvm-svn: 105339
diff --git a/llvm/lib/CodeGen/TwoAddressInstructionPass.cpp b/llvm/lib/CodeGen/TwoAddressInstructionPass.cpp
index f61dbc9..cd475cc 100644
--- a/llvm/lib/CodeGen/TwoAddressInstructionPass.cpp
+++ b/llvm/lib/CodeGen/TwoAddressInstructionPass.cpp
@@ -1185,8 +1185,8 @@
 
     std::sort(SubIndices.begin(), SubIndices.end());
     unsigned NewSubIdx = 0;
-    if (TRI->canCombinedSubRegIndex(MRI->getRegClass(SrcReg), SubIndices,
-                                    NewSubIdx)) {
+    if (TRI->canCombineSubRegIndices(MRI->getRegClass(SrcReg), SubIndices,
+                                     NewSubIdx)) {
       bool Proceed = true;
       if (NewSubIdx)
         for (MachineRegisterInfo::reg_iterator RI = MRI->reg_begin(SrcReg),