Imported Upstream version 5.18.0.234

Former-commit-id: 8071ec1a8c5eaa9be24b41745add19297608001f

external/llvm/lib/Target/ARC/ARCMCInstLower.cpp

@@ -1,115 +0,0 @@
-//===- ARCMCInstLower.cpp - ARC MachineInstr to MCInst ----------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-///
-/// \file
-/// \brief This file contains code to lower ARC MachineInstrs to their
-/// corresponding MCInst records.
-///
-//===----------------------------------------------------------------------===//
-
-#include "ARCMCInstLower.h"
-#include "llvm/CodeGen/AsmPrinter.h"
-#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/MachineInstr.h"
-#include "llvm/CodeGen/MachineOperand.h"
-#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCExpr.h"
-#include "llvm/MC/MCInst.h"
-
-using namespace llvm;
-
-ARCMCInstLower::ARCMCInstLower(MCContext *C, AsmPrinter &AsmPrinter)
-    : Ctx(C), Printer(AsmPrinter) {}
-
-MCOperand ARCMCInstLower::LowerSymbolOperand(const MachineOperand &MO,
-                                             MachineOperandType MOTy,
-                                             unsigned Offset) const {
-  MCSymbolRefExpr::VariantKind Kind = MCSymbolRefExpr::VK_None;
-  const MCSymbol *Symbol;
-
-  switch (MOTy) {
-  case MachineOperand::MO_MachineBasicBlock:
-    Symbol = MO.getMBB()->getSymbol();
-    break;
-  case MachineOperand::MO_GlobalAddress:
-    Symbol = Printer.getSymbol(MO.getGlobal());
-    Offset += MO.getOffset();
-    break;
-  case MachineOperand::MO_BlockAddress:
-    Symbol = Printer.GetBlockAddressSymbol(MO.getBlockAddress());
-    Offset += MO.getOffset();
-    break;
-  case MachineOperand::MO_ExternalSymbol:
-    Symbol = Printer.GetExternalSymbolSymbol(MO.getSymbolName());
-    Offset += MO.getOffset();
-    break;
-  case MachineOperand::MO_JumpTableIndex:
-    Symbol = Printer.GetJTISymbol(MO.getIndex());
-    break;
-  case MachineOperand::MO_ConstantPoolIndex:
-    Symbol = Printer.GetCPISymbol(MO.getIndex());
-    Offset += MO.getOffset();
-    break;
-  default:
-    llvm_unreachable("<unknown operand type>");
-  }
-
-  assert(Symbol && "Symbol creation failed.\n");
-  const MCSymbolRefExpr *MCSym = MCSymbolRefExpr::create(Symbol, Kind, *Ctx);
-
-  if (!Offset)
-    return MCOperand::createExpr(MCSym);
-
-  // Assume offset is never negative.
-  assert(Offset > 0);
-
-  const MCConstantExpr *OffsetExpr = MCConstantExpr::create(Offset, *Ctx);
-  const MCBinaryExpr *Add = MCBinaryExpr::createAdd(MCSym, OffsetExpr, *Ctx);
-  return MCOperand::createExpr(Add);
-}
-
-MCOperand ARCMCInstLower::LowerOperand(const MachineOperand &MO,
-                                       unsigned Offset) const {
-  MachineOperandType MOTy = MO.getType();
-
-  switch (MOTy) {
-  default:
-    llvm_unreachable("unknown operand type");
-  case MachineOperand::MO_Register:
-    // Ignore all implicit register operands.
-    if (MO.isImplicit())
-      break;
-    return MCOperand::createReg(MO.getReg());
-  case MachineOperand::MO_Immediate:
-    return MCOperand::createImm(MO.getImm() + Offset);
-  case MachineOperand::MO_MachineBasicBlock:
-  case MachineOperand::MO_GlobalAddress:
-  case MachineOperand::MO_ExternalSymbol:
-  case MachineOperand::MO_JumpTableIndex:
-  case MachineOperand::MO_ConstantPoolIndex:
-  case MachineOperand::MO_BlockAddress:
-    return LowerSymbolOperand(MO, MOTy, Offset);
-  case MachineOperand::MO_RegisterMask:
-    break;
-  }
-
-  return {};
-}
-
-void ARCMCInstLower::Lower(const MachineInstr *MI, MCInst &OutMI) const {
-  OutMI.setOpcode(MI->getOpcode());
-
-  for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
-    const MachineOperand &MO = MI->getOperand(i);
-    MCOperand MCOp = LowerOperand(MO);
-
-    if (MCOp.isValid())
-      OutMI.addOperand(MCOp);
-  }
-}