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//===-- PTXRegisterInfo.cpp - PTX Register Information --------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the PTX implementation of the TargetRegisterInfo class.
//
//===----------------------------------------------------------------------===//
#include "PTX.h"
#include "PTXRegisterInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
#define GET_REGINFO_TARGET_DESC
#include "PTXGenRegisterInfo.inc"
using namespace llvm;
PTXRegisterInfo::PTXRegisterInfo(PTXTargetMachine &TM,
const TargetInstrInfo &tii)
// PTX does not have a return address register.
: PTXGenRegisterInfo(0), TII(tii) {
}
void PTXRegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II,
int SPAdj,
RegScavenger *RS) const {
unsigned Index;
MachineInstr &MI = *II;
//MachineBasicBlock &MBB = *MI.getParent();
//DebugLoc dl = MI.getDebugLoc();
//MachineRegisterInfo &MRI = MI.getParent()->getParent()->getRegInfo();
//unsigned Reg = MRI.createVirtualRegister(PTX::RegF32RegisterClass);
llvm_unreachable("FrameIndex should have been previously eliminated!");
Index = 0;
while (!MI.getOperand(Index).isFI()) {
++Index;
assert(Index < MI.getNumOperands() &&
"Instr does not have a FrameIndex operand!");
}
int FrameIndex = MI.getOperand(Index).getIndex();
DEBUG(dbgs() << "eliminateFrameIndex: " << MI);
DEBUG(dbgs() << "- SPAdj: " << SPAdj << "\n");
DEBUG(dbgs() << "- FrameIndex: " << FrameIndex << "\n");
//MachineInstr* MI2 = BuildMI(MBB, II, dl, TII.get(PTX::LOAD_LOCAL_F32))
//.addReg(Reg, RegState::Define).addImm(FrameIndex);
//if (MI2->findFirstPredOperandIdx() == -1) {
// MI2->addOperand(MachineOperand::CreateReg(PTX::NoRegister, /*IsDef=*/false));
// MI2->addOperand(MachineOperand::CreateImm(PTX::PRED_NORMAL));
//}
//MI2->dump();
//MachineOperand ESOp = MachineOperand::CreateES("__local__");
// This frame index is post stack slot re-use assignments
//MI.getOperand(Index).ChangeToRegister(Reg, false);
MI.getOperand(Index).ChangeToImmediate(FrameIndex);
//MI.getOperand(Index) = ESOp;
}
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