| //===-- VEMCInstLower.cpp - Convert VE MachineInstr to MCInst -------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file contains code to lower VE MachineInstrs to their corresponding |
| // MCInst records. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "MCTargetDesc/VEMCExpr.h" |
| #include "VE.h" |
| #include "llvm/CodeGen/AsmPrinter.h" |
| #include "llvm/CodeGen/MachineFunction.h" |
| #include "llvm/CodeGen/MachineInstr.h" |
| #include "llvm/CodeGen/MachineOperand.h" |
| #include "llvm/IR/Mangler.h" |
| #include "llvm/MC/MCAsmInfo.h" |
| #include "llvm/MC/MCContext.h" |
| #include "llvm/MC/MCExpr.h" |
| #include "llvm/MC/MCInst.h" |
| |
| using namespace llvm; |
| |
| static MCOperand LowerSymbolOperand(const MachineInstr *MI, |
| const MachineOperand &MO, |
| const MCSymbol *Symbol, AsmPrinter &AP) { |
| VEMCExpr::VariantKind Kind = (VEMCExpr::VariantKind)MO.getTargetFlags(); |
| |
| const MCExpr *Expr = MCSymbolRefExpr::create(Symbol, AP.OutContext); |
| // Add offset iff MO is not jump table info or machine basic block. |
| if (!MO.isJTI() && !MO.isMBB() && MO.getOffset()) |
| Expr = MCBinaryExpr::createAdd( |
| Expr, MCConstantExpr::create(MO.getOffset(), AP.OutContext), |
| AP.OutContext); |
| Expr = VEMCExpr::create(Kind, Expr, AP.OutContext); |
| return MCOperand::createExpr(Expr); |
| } |
| |
| static MCOperand LowerOperand(const MachineInstr *MI, const MachineOperand &MO, |
| AsmPrinter &AP) { |
| switch (MO.getType()) { |
| default: |
| report_fatal_error("unsupported operand type"); |
| |
| case MachineOperand::MO_Register: |
| if (MO.isImplicit()) |
| break; |
| return MCOperand::createReg(MO.getReg()); |
| |
| case MachineOperand::MO_BlockAddress: |
| return LowerSymbolOperand( |
| MI, MO, AP.GetBlockAddressSymbol(MO.getBlockAddress()), AP); |
| case MachineOperand::MO_ConstantPoolIndex: |
| return LowerSymbolOperand(MI, MO, AP.GetCPISymbol(MO.getIndex()), AP); |
| case MachineOperand::MO_ExternalSymbol: |
| return LowerSymbolOperand( |
| MI, MO, AP.GetExternalSymbolSymbol(MO.getSymbolName()), AP); |
| case MachineOperand::MO_GlobalAddress: |
| return LowerSymbolOperand(MI, MO, AP.getSymbol(MO.getGlobal()), AP); |
| case MachineOperand::MO_Immediate: |
| return MCOperand::createImm(MO.getImm()); |
| case MachineOperand::MO_JumpTableIndex: |
| return LowerSymbolOperand(MI, MO, AP.GetJTISymbol(MO.getIndex()), AP); |
| case MachineOperand::MO_MachineBasicBlock: |
| return LowerSymbolOperand(MI, MO, MO.getMBB()->getSymbol(), AP); |
| |
| case MachineOperand::MO_RegisterMask: |
| break; |
| } |
| return MCOperand(); |
| } |
| |
| void llvm::LowerVEMachineInstrToMCInst(const MachineInstr *MI, MCInst &OutMI, |
| AsmPrinter &AP) { |
| OutMI.setOpcode(MI->getOpcode()); |
| |
| for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { |
| const MachineOperand &MO = MI->getOperand(i); |
| MCOperand MCOp = LowerOperand(MI, MO, AP); |
| |
| if (MCOp.isValid()) |
| OutMI.addOperand(MCOp); |
| } |
| } |