diff --git a/lib/Target/PowerPC/PowerPCInstrInfo.cpp b/lib/Target/PowerPC/PowerPCInstrInfo.cpp index 8340e783a67..778b55c81fd 100644 --- a/lib/Target/PowerPC/PowerPCInstrInfo.cpp +++ b/lib/Target/PowerPC/PowerPCInstrInfo.cpp @@ -15,8 +15,37 @@ #include "PowerPC.h" #include "llvm/CodeGen/MachineInstrBuilder.h" #include "PowerPCGenInstrInfo.inc" +#include using namespace llvm; PowerPCInstrInfo::PowerPCInstrInfo() : TargetInstrInfo(PowerPCInsts, sizeof(PowerPCInsts)/sizeof(PowerPCInsts[0])){ } + +bool PowerPCInstrInfo::isMoveInstr(const MachineInstr& MI, + unsigned& sourceReg, + unsigned& destReg) const { + MachineOpCode oc = MI.getOpcode(); + if (oc == PPC32::OR) { + assert(MI.getNumOperands() == 3 && + MI.getOperand(0).isRegister() && + MI.getOperand(1).isRegister() && + MI.getOperand(2).isRegister() && + "invalid register-register int move instruction"); + if (MI.getOperand(1).getReg() == MI.getOperand(2).getReg()) { + sourceReg = MI.getOperand(1).getReg(); + destReg = MI.getOperand(0).getReg(); + return true; + } + } + else if (oc == PPC32::FMR) { + assert(MI.getNumOperands() == 2 && + MI.getOperand(0).isRegister() && + MI.getOperand(1).isRegister() && + "invalid register-register fp move instruction"); + sourceReg = MI.getOperand(1).getReg(); + destReg = MI.getOperand(0).getReg(); + return true; + } + return false; +}