llvm-project/llvm/lib/Analysis/ValueLattice.cpp

//===- ValueLattice.cpp - Value constraint analysis -------------*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//

#include "llvm/Analysis/ValueLattice.h"

namespace llvm {
raw_ostream &operator<<(raw_ostream &OS, const ValueLatticeElement &Val) {
  if (Val.isUnknown())
    return OS << "unknown";
  if (Val.isUndef())
    return OS << "undef";
  if (Val.isOverdefined())
    return OS << "overdefined";

  if (Val.isNotConstant())
    return OS << "notconstant<" << *Val.getNotConstant() << ">";

  if (Val.isSingleCRFromUndef())
    return OS << "constantrange (from undef)<"
              << Val.getConstantRange().getLower() << ", "
              << Val.getConstantRange().getUpper() << ">";

  if (Val.isConstantRange())
    return OS << "constantrange<" << Val.getConstantRange().getLower() << ", "
              << Val.getConstantRange().getUpper() << ">";
  return OS << "constant<" << *Val.getConstant() << ">";
}
} // end namespace llvm