94 lines
3.1 KiB
C++
94 lines
3.1 KiB
C++
|
//===- HexagonMCInstLower.cpp - Convert Hexagon MachineInstr to an MCInst -===//
|
||
|
|
//
|
||
|
|
// The LLVM Compiler Infrastructure
|
||
|
|
//
|
||
|
|
// This file is distributed under the University of Illinois Open Source
|
||
|
|
// License. See LICENSE.TXT for details.
|
||
|
|
//
|
||
|
|
//===----------------------------------------------------------------------===//
|
||
|
|
//
|
||
|
|
// This file contains code to lower Hexagon MachineInstrs to their corresponding
|
||
|
|
// MCInst records.
|
||
|
|
//
|
||
|
|
//===----------------------------------------------------------------------===//
|
||
|
|
|
||
|
|
#include "Hexagon.h"
|
||
|
|
#include "HexagonAsmPrinter.h"
|
||
|
|
#include "HexagonMachineFunctionInfo.h"
|
||
|
|
#include "llvm/Constants.h"
|
||
|
|
#include "llvm/CodeGen/MachineBasicBlock.h"
|
||
|
|
#include "llvm/MC/MCExpr.h"
|
||
|
|
#include "llvm/MC/MCInst.h"
|
||
|
|
#include "llvm/Target/Mangler.h"
|
||
|
|
|
||
|
|
using namespace llvm;
|
||
|
|
|
||
|
|
static MCOperand GetSymbolRef(const MachineOperand& MO, const MCSymbol* Symbol,
|
||
|
|
HexagonAsmPrinter& Printer) {
|
||
|
|
MCContext &MC = Printer.OutContext;
|
||
|
|
const MCExpr *ME;
|
||
|
|
|
||
|
|
ME = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_None, MC);
|
||
|
|
|
||
|
|
if (!MO.isJTI() && MO.getOffset())
|
||
|
|
ME = MCBinaryExpr::CreateAdd(ME, MCConstantExpr::Create(MO.getOffset(), MC),
|
||
|
|
MC);
|
||
|
|
|
||
|
|
return (MCOperand::CreateExpr(ME));
|
||
|
|
}
|
||
|
|
|
||
|
|
// Create an MCInst from a MachineInstr
|
||
|
|
void llvm::HexagonLowerToMC(const MachineInstr* MI, MCInst& MCI,
|
||
|
|
HexagonAsmPrinter& AP) {
|
||
|
|
MCI.setOpcode(MI->getOpcode());
|
||
|
|
|
||
|
|
for (unsigned i = 0, e = MI->getNumOperands(); i < e; i++) {
|
||
|
|
const MachineOperand &MO = MI->getOperand(i);
|
||
|
|
MCOperand MCO;
|
||
|
|
|
||
|
|
switch (MO.getType()) {
|
||
|
|
default:
|
||
|
|
MI->dump();
|
||
|
|
assert(0 && "unknown operand type");
|
||
|
|
case MachineOperand::MO_Register:
|
||
|
|
// Ignore all implicit register operands.
|
||
|
|
if (MO.isImplicit()) continue;
|
||
|
|
MCO = MCOperand::CreateReg(MO.getReg());
|
||
|
|
break;
|
||
|
|
case MachineOperand::MO_FPImmediate: {
|
||
|
|
APFloat Val = MO.getFPImm()->getValueAPF();
|
||
|
|
// FP immediates are used only when setting GPRs, so they may be dealt
|
||
|
|
// with like regular immediates from this point on.
|
||
|
|
MCO = MCOperand::CreateImm(*Val.bitcastToAPInt().getRawData());
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case MachineOperand::MO_Immediate:
|
||
|
|
MCO = MCOperand::CreateImm(MO.getImm());
|
||
|
|
break;
|
||
|
|
case MachineOperand::MO_MachineBasicBlock:
|
||
|
|
MCO = MCOperand::CreateExpr
|
||
|
|
(MCSymbolRefExpr::Create(MO.getMBB()->getSymbol(),
|
||
|
|
AP.OutContext));
|
||
|
|
break;
|
||
|
|
case MachineOperand::MO_GlobalAddress:
|
||
|
|
MCO = GetSymbolRef(MO, AP.Mang->getSymbol(MO.getGlobal()), AP);
|
||
|
|
break;
|
||
|
|
case MachineOperand::MO_ExternalSymbol:
|
||
|
|
MCO = GetSymbolRef(MO, AP.GetExternalSymbolSymbol(MO.getSymbolName()),
|
||
|
|
AP);
|
||
|
|
break;
|
||
|
|
case MachineOperand::MO_JumpTableIndex:
|
||
|
|
MCO = GetSymbolRef(MO, AP.GetJTISymbol(MO.getIndex()), AP);
|
||
|
|
break;
|
||
|
|
case MachineOperand::MO_ConstantPoolIndex:
|
||
|
|
MCO = GetSymbolRef(MO, AP.GetCPISymbol(MO.getIndex()), AP);
|
||
|
|
break;
|
||
|
|
case MachineOperand::MO_BlockAddress:
|
||
|
|
MCO = GetSymbolRef(MO, AP.GetBlockAddressSymbol(MO.getBlockAddress()),AP);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
MCI.addOperand(MCO);
|
||
|
|
}
|
||
|
|
}
|