1*0b57cec5SDimitry Andric //===-- SparcMCInstLower.cpp - Convert Sparc MachineInstr to MCInst -------===// 2*0b57cec5SDimitry Andric // 3*0b57cec5SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*0b57cec5SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5*0b57cec5SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*0b57cec5SDimitry Andric // 7*0b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 8*0b57cec5SDimitry Andric // 9*0b57cec5SDimitry Andric // This file contains code to lower Sparc MachineInstrs to their corresponding 10*0b57cec5SDimitry Andric // MCInst records. 11*0b57cec5SDimitry Andric // 12*0b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 13*0b57cec5SDimitry Andric 14*0b57cec5SDimitry Andric #include "MCTargetDesc/SparcMCExpr.h" 15*0b57cec5SDimitry Andric #include "Sparc.h" 16*0b57cec5SDimitry Andric #include "llvm/CodeGen/AsmPrinter.h" 17*0b57cec5SDimitry Andric #include "llvm/CodeGen/MachineFunction.h" 18*0b57cec5SDimitry Andric #include "llvm/CodeGen/MachineInstr.h" 19*0b57cec5SDimitry Andric #include "llvm/CodeGen/MachineOperand.h" 20*0b57cec5SDimitry Andric #include "llvm/IR/Mangler.h" 21*0b57cec5SDimitry Andric #include "llvm/MC/MCAsmInfo.h" 22*0b57cec5SDimitry Andric #include "llvm/MC/MCContext.h" 23*0b57cec5SDimitry Andric #include "llvm/MC/MCExpr.h" 24*0b57cec5SDimitry Andric #include "llvm/MC/MCInst.h" 25*0b57cec5SDimitry Andric 26*0b57cec5SDimitry Andric using namespace llvm; 27*0b57cec5SDimitry Andric 28*0b57cec5SDimitry Andric 29*0b57cec5SDimitry Andric static MCOperand LowerSymbolOperand(const MachineInstr *MI, 30*0b57cec5SDimitry Andric const MachineOperand &MO, 31*0b57cec5SDimitry Andric AsmPrinter &AP) { 32*0b57cec5SDimitry Andric 33*0b57cec5SDimitry Andric SparcMCExpr::VariantKind Kind = 34*0b57cec5SDimitry Andric (SparcMCExpr::VariantKind)MO.getTargetFlags(); 35*0b57cec5SDimitry Andric const MCSymbol *Symbol = nullptr; 36*0b57cec5SDimitry Andric 37*0b57cec5SDimitry Andric switch(MO.getType()) { 38*0b57cec5SDimitry Andric default: llvm_unreachable("Unknown type in LowerSymbolOperand"); 39*0b57cec5SDimitry Andric case MachineOperand::MO_MachineBasicBlock: 40*0b57cec5SDimitry Andric Symbol = MO.getMBB()->getSymbol(); 41*0b57cec5SDimitry Andric break; 42*0b57cec5SDimitry Andric 43*0b57cec5SDimitry Andric case MachineOperand::MO_GlobalAddress: 44*0b57cec5SDimitry Andric Symbol = AP.getSymbol(MO.getGlobal()); 45*0b57cec5SDimitry Andric break; 46*0b57cec5SDimitry Andric 47*0b57cec5SDimitry Andric case MachineOperand::MO_BlockAddress: 48*0b57cec5SDimitry Andric Symbol = AP.GetBlockAddressSymbol(MO.getBlockAddress()); 49*0b57cec5SDimitry Andric break; 50*0b57cec5SDimitry Andric 51*0b57cec5SDimitry Andric case MachineOperand::MO_ExternalSymbol: 52*0b57cec5SDimitry Andric Symbol = AP.GetExternalSymbolSymbol(MO.getSymbolName()); 53*0b57cec5SDimitry Andric break; 54*0b57cec5SDimitry Andric 55*0b57cec5SDimitry Andric case MachineOperand::MO_ConstantPoolIndex: 56*0b57cec5SDimitry Andric Symbol = AP.GetCPISymbol(MO.getIndex()); 57*0b57cec5SDimitry Andric break; 58*0b57cec5SDimitry Andric } 59*0b57cec5SDimitry Andric 60*0b57cec5SDimitry Andric const MCSymbolRefExpr *MCSym = MCSymbolRefExpr::create(Symbol, 61*0b57cec5SDimitry Andric AP.OutContext); 62*0b57cec5SDimitry Andric const SparcMCExpr *expr = SparcMCExpr::create(Kind, MCSym, 63*0b57cec5SDimitry Andric AP.OutContext); 64*0b57cec5SDimitry Andric return MCOperand::createExpr(expr); 65*0b57cec5SDimitry Andric } 66*0b57cec5SDimitry Andric 67*0b57cec5SDimitry Andric static MCOperand LowerOperand(const MachineInstr *MI, 68*0b57cec5SDimitry Andric const MachineOperand &MO, 69*0b57cec5SDimitry Andric AsmPrinter &AP) { 70*0b57cec5SDimitry Andric switch(MO.getType()) { 71*0b57cec5SDimitry Andric default: llvm_unreachable("unknown operand type"); break; 72*0b57cec5SDimitry Andric case MachineOperand::MO_Register: 73*0b57cec5SDimitry Andric if (MO.isImplicit()) 74*0b57cec5SDimitry Andric break; 75*0b57cec5SDimitry Andric return MCOperand::createReg(MO.getReg()); 76*0b57cec5SDimitry Andric 77*0b57cec5SDimitry Andric case MachineOperand::MO_Immediate: 78*0b57cec5SDimitry Andric return MCOperand::createImm(MO.getImm()); 79*0b57cec5SDimitry Andric 80*0b57cec5SDimitry Andric case MachineOperand::MO_MachineBasicBlock: 81*0b57cec5SDimitry Andric case MachineOperand::MO_GlobalAddress: 82*0b57cec5SDimitry Andric case MachineOperand::MO_BlockAddress: 83*0b57cec5SDimitry Andric case MachineOperand::MO_ExternalSymbol: 84*0b57cec5SDimitry Andric case MachineOperand::MO_ConstantPoolIndex: 85*0b57cec5SDimitry Andric return LowerSymbolOperand(MI, MO, AP); 86*0b57cec5SDimitry Andric 87*0b57cec5SDimitry Andric case MachineOperand::MO_RegisterMask: break; 88*0b57cec5SDimitry Andric 89*0b57cec5SDimitry Andric } 90*0b57cec5SDimitry Andric return MCOperand(); 91*0b57cec5SDimitry Andric } 92*0b57cec5SDimitry Andric 93*0b57cec5SDimitry Andric void llvm::LowerSparcMachineInstrToMCInst(const MachineInstr *MI, 94*0b57cec5SDimitry Andric MCInst &OutMI, 95*0b57cec5SDimitry Andric AsmPrinter &AP) 96*0b57cec5SDimitry Andric { 97*0b57cec5SDimitry Andric 98*0b57cec5SDimitry Andric OutMI.setOpcode(MI->getOpcode()); 99*0b57cec5SDimitry Andric 100*0b57cec5SDimitry Andric for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { 101*0b57cec5SDimitry Andric const MachineOperand &MO = MI->getOperand(i); 102*0b57cec5SDimitry Andric MCOperand MCOp = LowerOperand(MI, MO, AP); 103*0b57cec5SDimitry Andric 104*0b57cec5SDimitry Andric if (MCOp.isValid()) 105*0b57cec5SDimitry Andric OutMI.addOperand(MCOp); 106*0b57cec5SDimitry Andric } 107*0b57cec5SDimitry Andric } 108