1//===- lib/MC/MCValue.cpp - MCValue implementation ------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "llvm/MC/MCValue.h"
10#include "llvm/Config/llvm-config.h"
11#include "llvm/MC/MCExpr.h"
12#include "llvm/Support/Debug.h"
13#include "llvm/Support/ErrorHandling.h"
14#include "llvm/Support/raw_ostream.h"
15
16using namespace llvm;
17
18void MCValue::print(raw_ostream &OS) const {
19  if (isAbsolute()) {
20    OS << getConstant();
21    return;
22  }
23
24  // FIXME: prints as a number, which isn't ideal. But the meaning will be
25  // target-specific anyway.
26  if (getRefKind())
27    OS << ':' << getRefKind() <<  ':';
28
29  OS << *getSymA();
30
31  if (getSymB()) {
32    OS << " - ";
33    OS << *getSymB();
34  }
35
36  if (getConstant())
37    OS << " + " << getConstant();
38}
39
40#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
41LLVM_DUMP_METHOD void MCValue::dump() const {
42  print(dbgs());
43}
44#endif
45
46MCSymbolRefExpr::VariantKind MCValue::getAccessVariant() const {
47  const MCSymbolRefExpr *B = getSymB();
48  if (B) {
49    if (B->getKind() != MCSymbolRefExpr::VK_None)
50      llvm_unreachable("unsupported");
51  }
52
53  const MCSymbolRefExpr *A = getSymA();
54  if (!A)
55    return MCSymbolRefExpr::VK_None;
56
57  return A->getKind();
58}
59