1 //===- PowerPCInstrInfo.cpp - PowerPC Instruction Information ---*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file contains the PowerPC implementation of the TargetInstrInfo class.
12 //===----------------------------------------------------------------------===//
14 #include "PowerPCInstrInfo.h"
16 #include "llvm/CodeGen/MachineInstrBuilder.h"
17 #include "PowerPCGenInstrInfo.inc"
21 PowerPCInstrInfo::PowerPCInstrInfo()
22 : TargetInstrInfo(PowerPCInsts, sizeof(PowerPCInsts)/sizeof(PowerPCInsts[0])){
25 bool PowerPCInstrInfo::isMoveInstr(const MachineInstr& MI,
27 unsigned& destReg) const {
28 MachineOpCode oc = MI.getOpcode();
29 if (oc == PPC32::OR) {
30 assert(MI.getNumOperands() == 3 &&
31 MI.getOperand(0).isRegister() &&
32 MI.getOperand(1).isRegister() &&
33 MI.getOperand(2).isRegister() &&
34 "invalid register-register int move instruction");
35 if (MI.getOperand(1).getReg() == MI.getOperand(2).getReg()) {
36 sourceReg = MI.getOperand(1).getReg();
37 destReg = MI.getOperand(0).getReg();
41 else if (oc == PPC32::FMR) {
42 assert(MI.getNumOperands() == 2 &&
43 MI.getOperand(0).isRegister() &&
44 MI.getOperand(1).isRegister() &&
45 "invalid register-register fp move instruction");
46 sourceReg = MI.getOperand(1).getReg();
47 destReg = MI.getOperand(0).getReg();