C++ 使用llvm生成链接器时出错

我正在努力建造。我得到了链接错误，我无法找出原因。这是源文件：

#pragma once

#include <llvm/Support/Debug.h>
#include <llvm/Support/ConstantRange.h>

// llvm::ConstantRange fixup.
class CRange : public llvm::ConstantRange {
    typedef llvm::APInt APInt;
    typedef llvm::ConstantRange super;
public:
    CRange(uint32_t BitWidth, bool isFullSet) : super(BitWidth, isFullSet) {}
    // Constructors.
    CRange(const super &CR) : super(CR) {}
    CRange(const APInt &Value)
        : super(Value) {}
    CRange(const APInt &Lower, const APInt &Upper)
        : super(Lower, Upper) {}
    static CRange makeFullSet(uint32_t BitWidth) {
        return CRange(BitWidth, true);
    }
    static CRange makeEmptySet(uint32_t BitWidth) {
        return CRange(BitWidth, false);
    }
    static CRange makeICmpRegion(unsigned Pred, const CRange &other) {
        return super::makeICmpRegion(Pred, other);
    }

    void match(const CRange &R) {
        if (this->getBitWidth() != R.getBitWidth()) {
            llvm::dbgs() << "warning: range " << *this << " " 
                << this->getBitWidth() << " and " << R << " "
                << R.getBitWidth() << " unmatch\n";
            *this = this->zextOrTrunc(R.getBitWidth());
        }
    }

    bool safeUnion(const CRange &R) {
        CRange V = R, Old = *this;
        V.match(*this);
        *this = this->unionWith(V);
        return Old != *this;
    }


    CRange sdiv(const CRange &RHS) const {
        if (isEmptySet() || RHS.isEmptySet())
            return makeEmptySet(getBitWidth());
        // FIXME: too conservative.
        return makeFullSet(getBitWidth());
    }

};

但是，

llvm:：ConstantRange:：ConstantRange（llvm:：APInt const&）

已经在llvm中定义。这是llvm中

ConstantRange.h

的源代码

#if LLVM_HAS_RVALUE_REFERENCES
  // If we have move semantics, pass APInts by value and move them into place.
  typedef APInt APIntMoveTy;
#else
  // Otherwise pass by const ref to save one copy.
  typedef const APInt &APIntMoveTy;
#endif

public:
  /// Initialize a full (the default) or empty set for the specified bit width.
  ///
  explicit ConstantRange(uint32_t BitWidth, bool isFullSet = true);

  /// Initialize a range to hold the single specified value.
  ///
  ConstantRange(APIntMoveTy Value);

  /// @brief Initialize a range of values explicitly. This will assert out if
  /// Lower==Upper and Lower != Min or Max value for its type. It will also
  /// assert out if the two APInt's are not the same bit width.
  ConstantRange(APIntMoveTy Lower, APIntMoveTy Upper);

---

我已经尝试使用LLVM3.4和LLVM3.5。我使用的是GCC4.8.2。我找不到任何无法生成的原因？

我猜您的代码和使用未定义/定义的

llvm\u值编译的llvm代码具有\u正确的值\u引用

尝试定义LLVM\u在代码中有\u正确的值\u引用

基本上，您要求

（T const&）

，但llvm有

（T）

#if LLVM_HAS_RVALUE_REFERENCES
  // If we have move semantics, pass APInts by value and move them into place.
  typedef APInt APIntMoveTy;
#else
  // Otherwise pass by const ref to save one copy.
  typedef const APInt &APIntMoveTy;
#endif

public:
  /// Initialize a full (the default) or empty set for the specified bit width.
  ///
  explicit ConstantRange(uint32_t BitWidth, bool isFullSet = true);

  /// Initialize a range to hold the single specified value.
  ///
  ConstantRange(APIntMoveTy Value);

  /// @brief Initialize a range of values explicitly. This will assert out if
  /// Lower==Upper and Lower != Min or Max value for its type. It will also
  /// assert out if the two APInt's are not the same bit width.
  ConstantRange(APIntMoveTy Lower, APIntMoveTy Upper);