text: //===-- XCoreInstPrinter.cpp - Convert XCore MCInst to assembly syntax ----===//
  //
  // 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 class prints an XCore MCInst to a .s file.
  //
  //===----------------------------------------------------------------------===//
  
  #include "XCoreInstPrinter.h"
  #include "llvm/ADT/StringRef.h"
  #include "llvm/MC/MCExpr.h"
  #include "llvm/MC/MCInst.h"
  #include "llvm/MC/MCSymbol.h"
  #include "llvm/Support/Casting.h"
  #include "llvm/Support/ErrorHandling.h"
  #include "llvm/Support/raw_ostream.h"
  #include <cassert>
  
  using namespace llvm;
  
  #define DEBUG_TYPE "asm-printer"
  
  #include "XCoreGenAsmWriter.inc"
  
  void XCoreInstPrinter::printRegName(raw_ostream &OS, unsigned RegNo) const {
    OS << StringRef(getRegisterName(RegNo)).lower();
  }
  
  void XCoreInstPrinter::printInst(const MCInst *MI, raw_ostream &O,
                                   StringRef Annot, const MCSubtargetInfo &STI) {
    printInstruction(MI, O);
    printAnnotation(O, Annot);
  }
  
  void XCoreInstPrinter::
  printInlineJT(const MCInst *MI, int opNum, raw_ostream &O) {
    report_fatal_error("can't handle InlineJT");
  }
  
  void XCoreInstPrinter::
  printInlineJT32(const MCInst *MI, int opNum, raw_ostream &O) {
    report_fatal_error("can't handle InlineJT32");
  }
  
  static void printExpr(const MCExpr *Expr, const MCAsmInfo *MAI,
                        raw_ostream &OS) {
    int Offset = 0;
    const MCSymbolRefExpr *SRE;
  
    if (const MCBinaryExpr *BE = dyn_cast<MCBinaryExpr>(Expr)) {
      SRE = dyn_cast<MCSymbolRefExpr>(BE->getLHS());
      const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(BE->getRHS());
      assert(SRE && CE && "Binary expression must be sym+const.");
      Offset = CE->getValue();
    } else {
      SRE = dyn_cast<MCSymbolRefExpr>(Expr);
      assert(SRE && "Unexpected MCExpr type.");
    }
    assert(SRE->getKind() == MCSymbolRefExpr::VK_None);
  
    SRE->getSymbol().print(OS, MAI);
  
    if (Offset) {
      if (Offset > 0)
        OS << '+';
      OS << Offset;
    }
  }
  
  void XCoreInstPrinter::
  printOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O) {
    const MCOperand &Op = MI->getOperand(OpNo);
    if (Op.isReg()) {
      printRegName(O, Op.getReg());
      return;
    }
  
    if (Op.isImm()) {
      O << Op.getImm();
      return;
    }
  
    assert(Op.isExpr() && "unknown operand kind in printOperand");
    printExpr(Op.getExpr(), &MAI, O);
  }
  