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//===-- R600InstrInfo.cpp - R600 Instruction Information ------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// R600 Implementation of TargetInstrInfo.
//
//===----------------------------------------------------------------------===//
#include "R600InstrInfo.h"
#include "AMDGPUTargetMachine.h"
#include "R600RegisterInfo.h"
using namespace llvm;
R600InstrInfo::R600InstrInfo(AMDGPUTargetMachine &tm)
: AMDGPUInstrInfo(tm),
RI(tm, *this),
TM(tm)
{ }
const R600RegisterInfo &R600InstrInfo::getRegisterInfo() const
{
return RI;
}
bool R600InstrInfo::isTrig(const MachineInstr &MI) const
{
return get(MI.getOpcode()).TSFlags & R600_InstFlag::TRIG;
}
void
R600InstrInfo::copyPhysReg(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI, DebugLoc DL,
unsigned DestReg, unsigned SrcReg,
bool KillSrc) const
{
unsigned subRegMap[4] = {AMDIL::sel_x, AMDIL::sel_y, AMDIL::sel_z, AMDIL::sel_w};
if (AMDIL::R600_Reg128RegClass.contains(DestReg)
&& AMDIL::R600_Reg128RegClass.contains(SrcReg)) {
for (unsigned i = 0; i < 4; i++) {
BuildMI(MBB, MI, DL, get(AMDIL::MOV))
.addReg(RI.getSubReg(DestReg, subRegMap[i]), RegState::Define)
.addReg(RI.getSubReg(SrcReg, subRegMap[i]))
.addReg(DestReg, RegState::Define | RegState::Implicit);
}
} else {
/* We can't copy vec4 registers */
assert(!AMDIL::R600_Reg128RegClass.contains(DestReg)
&& !AMDIL::R600_Reg128RegClass.contains(SrcReg));
BuildMI(MBB, MI, DL, get(AMDIL::MOV), DestReg)
.addReg(SrcReg, getKillRegState(KillSrc));
}
}
MachineInstr * R600InstrInfo::getMovImmInstr(MachineFunction *MF,
unsigned DstReg, int64_t Imm) const
{
MachineInstr * MI = MF->CreateMachineInstr(get(AMDIL::MOV), DebugLoc());
MachineInstrBuilder(MI).addReg(DstReg, RegState::Define);
MachineInstrBuilder(MI).addReg(AMDIL::ALU_LITERAL_X);
MachineInstrBuilder(MI).addImm(Imm);
return MI;
}
unsigned R600InstrInfo::getIEQOpcode() const
{
return AMDIL::SETE_INT;
}
bool R600InstrInfo::isMov(unsigned Opcode) const
{
switch(Opcode) {
default: return false;
case AMDIL::MOV:
case AMDIL::MOV_IMM_F32:
case AMDIL::MOV_IMM_I32:
return true;
}
}
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