Make TargetInstrInfo::copyRegToReg return a bool indicating whether the copy requested
was inserted or not.  This allows bitcast in fast isel to properly handle the case
where an appropriate reg-to-reg copy is not available.

llvm-svn: 55375
diff --git a/llvm/lib/Target/CellSPU/SPUInstrInfo.h b/llvm/lib/Target/CellSPU/SPUInstrInfo.h
index 9adffde..5f3aaaa 100644
--- a/llvm/lib/Target/CellSPU/SPUInstrInfo.h
+++ b/llvm/lib/Target/CellSPU/SPUInstrInfo.h
@@ -46,7 +46,7 @@
     unsigned isLoadFromStackSlot(MachineInstr *MI, int &FrameIndex) const;
     unsigned isStoreToStackSlot(MachineInstr *MI, int &FrameIndex) const;
     
-    virtual void copyRegToReg(MachineBasicBlock &MBB,
+    virtual bool copyRegToReg(MachineBasicBlock &MBB,
                               MachineBasicBlock::iterator MI,
                               unsigned DestReg, unsigned SrcReg,
                               const TargetRegisterClass *DestRC,