1 //===- MSP430InstrInfo.cpp - MSP430 Instruction Information ---------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file contains the MSP430 implementation of the TargetInstrInfo class.
12 //===----------------------------------------------------------------------===//
15 #include "MSP430InstrInfo.h"
16 #include "MSP430TargetMachine.h"
17 #include "MSP430GenInstrInfo.inc"
18 #include "llvm/Function.h"
19 #include "llvm/CodeGen/MachineFunction.h"
20 #include "llvm/CodeGen/MachineInstrBuilder.h"
21 #include "llvm/CodeGen/MachineRegisterInfo.h"
26 MSP430InstrInfo::MSP430InstrInfo(MSP430TargetMachine &tm)
27 : TargetInstrInfoImpl(MSP430Insts, array_lengthof(MSP430Insts)),
30 bool MSP430InstrInfo::copyRegToReg(MachineBasicBlock &MBB,
31 MachineBasicBlock::iterator I,
32 unsigned DestReg, unsigned SrcReg,
33 const TargetRegisterClass *DestRC,
34 const TargetRegisterClass *SrcRC) const {
35 if (DestRC != SrcRC) {
40 DebugLoc DL = DebugLoc::getUnknownLoc();
41 if (I != MBB.end()) DL = I->getDebugLoc();
43 BuildMI(MBB, I, DL, get(MSP430::MOV16rr), DestReg).addReg(SrcReg);
48 MSP430InstrInfo::isMoveInstr(const MachineInstr& MI,
49 unsigned &SrcReg, unsigned &DstReg,
50 unsigned &SrcSubIdx, unsigned &DstSubIdx) const {
51 SrcSubIdx = DstSubIdx = 0; // No sub-registers yet.
53 switch (MI.getOpcode()) {
57 assert(MI.getNumOperands() >= 2 &&
58 MI.getOperand(0).isReg() &&
59 MI.getOperand(1).isReg() &&
60 "invalid register-register move instruction");
61 SrcReg = MI.getOperand(1).getReg();
62 DstReg = MI.getOperand(0).getReg();