Change TargetInstrInfo::isMoveInstr to return source and destination sub-register indices as well.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62600 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Mips/MipsInstrInfo.cpp b/lib/Target/Mips/MipsInstrInfo.cpp
index e71d26d..daff538 100644
--- a/lib/Target/Mips/MipsInstrInfo.cpp
+++ b/lib/Target/Mips/MipsInstrInfo.cpp
@@ -30,8 +30,11 @@
 /// Return true if the instruction is a register to register move and
 /// leave the source and dest operands in the passed parameters.
 bool MipsInstrInfo::
-isMoveInstr(const MachineInstr &MI, unsigned &SrcReg, unsigned &DstReg) const 
+isMoveInstr(const MachineInstr &MI, unsigned &SrcReg, unsigned &DstReg,
+            unsigned &SrcSubIdx, unsigned &DstSubIdx) const 
 {
+  SrcSubIdx = DstSubIdx = 0; // No sub-registers.
+
   //  addu  $dst, $src, $zero || addu  $dst, $zero, $src
   //  or    $dst, $src, $zero || or    $dst, $zero, $src
   if ((MI.getOpcode() == Mips::ADDu) || (MI.getOpcode() == Mips::OR)) {