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/X86/X86InstrInfo.h b/lib/Target/X86/X86InstrInfo.h
index b9cd961..077de56 100644
--- a/lib/Target/X86/X86InstrInfo.h
+++ b/lib/Target/X86/X86InstrInfo.h
@@ -285,11 +285,12 @@
///
virtual const X86RegisterInfo &getRegisterInfo() const { return RI; }
- // Return true if the instruction is a register to register move and
- // leave the source and dest operands in the passed parameters.
- //
- bool isMoveInstr(const MachineInstr& MI, unsigned& sourceReg,
- unsigned& destReg) const;
+ /// Return true if the instruction is a register to register move and return
+ /// the source and dest operands and their sub-register indices by reference.
+ virtual bool isMoveInstr(const MachineInstr &MI,
+ unsigned &SrcReg, unsigned &DstReg,
+ unsigned &SrcSubIdx, unsigned &DstSubIdx) const;
+
unsigned isLoadFromStackSlot(const MachineInstr *MI, int &FrameIndex) const;
unsigned isStoreToStackSlot(const MachineInstr *MI, int &FrameIndex) const;