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//===- ARMInstrInfo.cpp - ARM Instruction Information -----------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the "Instituto Nokia de Tecnologia" and
// is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the ARM implementation of the TargetInstrInfo class.
//
//===----------------------------------------------------------------------===//
#include "ARMInstrInfo.h"
#include "ARM.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "ARMGenInstrInfo.inc"
using namespace llvm;
ARMInstrInfo::ARMInstrInfo()
: TargetInstrInfo(ARMInsts, sizeof(ARMInsts)/sizeof(ARMInsts[0])) {
}
/// Return true if the instruction is a register to register move and
/// leave the source and dest operands in the passed parameters.
///
bool ARMInstrInfo::isMoveInstr(const MachineInstr &MI,
unsigned &SrcReg, unsigned &DstReg) const {
MachineOpCode oc = MI.getOpcode();
switch (oc) {
default:
return false;
case ARM::movrr:
assert(MI.getNumOperands() == 2 &&
MI.getOperand(0).isRegister() &&
MI.getOperand(1).isRegister() &&
"Invalid ARM MOV instruction");
SrcReg = MI.getOperand(1).getReg();;
DstReg = MI.getOperand(0).getReg();;
return true;
}
}
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