//===- lib/MC/MCValue.cpp - MCValue implementation ------------------------===//

//

//                     The LLVM Compiler Infrastructure

//

// This file is distributed under the University of Illinois Open Source

// License. See LICENSE.TXT for details.

//

//===----------------------------------------------------------------------===//

#include "llvm/MC/MCValue.h"

#include "llvm/MC/MCExpr.h"

#include "llvm/Support/Debug.h"

#include "llvm/Support/ErrorHandling.h"

#include "llvm/Support/raw_ostream.h"

using namespace llvm_ks;

void MCValue::print(raw_ostream &OS) const {

  if (isAbsolute()) {

    OS << getConstant();

    return;

  }

  // FIXME: prints as a number, which isn't ideal. But the meaning will be

  // target-specific anyway.

  if (getRefKind())

    OS << ':' << getRefKind() <<  ':';

  OS << *getSymA();

  if (getSymB()) {

    OS << " - ";

    OS << *getSymB();

  }

  if (getConstant())

    OS << " + " << getConstant();

}

#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)

LLVM_DUMP_METHOD void MCValue::dump() const {

}

#endif

MCSymbolRefExpr::VariantKind MCValue::getAccessVariant() const {

  const MCSymbolRefExpr *B = getSymB();

  if (B) {

    if (B->getKind() != MCSymbolRefExpr::VK_None)

      llvm_unreachable("unsupported");

  }

  const MCSymbolRefExpr *A = getSymA();

  if (!A)

    return MCSymbolRefExpr::VK_None;

  MCSymbolRefExpr::VariantKind Kind = A->getKind();

  if (Kind == MCSymbolRefExpr::VK_WEAKREF)

    return MCSymbolRefExpr::VK_None;

  return Kind;

}