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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
108 lines
3.3 KiB
C++
108 lines
3.3 KiB
C++
//===-- SparcMCInstLower.cpp - Convert Sparc MachineInstr to MCInst -------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains code to lower Sparc MachineInstrs to their corresponding
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// MCInst records.
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//
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//===----------------------------------------------------------------------===//
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#include "MCTargetDesc/SparcMCExpr.h"
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#include "Sparc.h"
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#include "llvm/CodeGen/AsmPrinter.h"
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#include "llvm/CodeGen/MachineFunction.h"
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#include "llvm/CodeGen/MachineInstr.h"
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#include "llvm/CodeGen/MachineOperand.h"
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#include "llvm/IR/Mangler.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCExpr.h"
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#include "llvm/MC/MCInst.h"
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using namespace llvm;
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static MCOperand LowerSymbolOperand(const MachineInstr *MI,
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const MachineOperand &MO,
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AsmPrinter &AP) {
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SparcMCExpr::VariantKind Kind =
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(SparcMCExpr::VariantKind)MO.getTargetFlags();
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const MCSymbol *Symbol = nullptr;
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switch(MO.getType()) {
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default: llvm_unreachable("Unknown type in LowerSymbolOperand");
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case MachineOperand::MO_MachineBasicBlock:
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Symbol = MO.getMBB()->getSymbol();
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break;
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case MachineOperand::MO_GlobalAddress:
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Symbol = AP.getSymbol(MO.getGlobal());
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break;
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case MachineOperand::MO_BlockAddress:
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Symbol = AP.GetBlockAddressSymbol(MO.getBlockAddress());
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break;
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case MachineOperand::MO_ExternalSymbol:
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Symbol = AP.GetExternalSymbolSymbol(MO.getSymbolName());
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break;
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case MachineOperand::MO_ConstantPoolIndex:
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Symbol = AP.GetCPISymbol(MO.getIndex());
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break;
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}
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const MCSymbolRefExpr *MCSym = MCSymbolRefExpr::create(Symbol,
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AP.OutContext);
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const SparcMCExpr *expr = SparcMCExpr::create(Kind, MCSym,
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AP.OutContext);
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return MCOperand::createExpr(expr);
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}
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static MCOperand LowerOperand(const MachineInstr *MI,
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const MachineOperand &MO,
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AsmPrinter &AP) {
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switch(MO.getType()) {
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default: llvm_unreachable("unknown operand type"); break;
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case MachineOperand::MO_Register:
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if (MO.isImplicit())
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break;
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return MCOperand::createReg(MO.getReg());
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case MachineOperand::MO_Immediate:
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return MCOperand::createImm(MO.getImm());
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case MachineOperand::MO_MachineBasicBlock:
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case MachineOperand::MO_GlobalAddress:
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case MachineOperand::MO_BlockAddress:
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case MachineOperand::MO_ExternalSymbol:
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case MachineOperand::MO_ConstantPoolIndex:
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return LowerSymbolOperand(MI, MO, AP);
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case MachineOperand::MO_RegisterMask: break;
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}
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return MCOperand();
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}
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void llvm::LowerSparcMachineInstrToMCInst(const MachineInstr *MI,
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MCInst &OutMI,
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AsmPrinter &AP)
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{
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OutMI.setOpcode(MI->getOpcode());
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for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
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const MachineOperand &MO = MI->getOperand(i);
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MCOperand MCOp = LowerOperand(MI, MO, AP);
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if (MCOp.isValid())
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OutMI.addOperand(MCOp);
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}
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}
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