ValueLattice.cpp revision 363496 
1//===- ValueLattice.cpp - Value constraint analysis -------------*- C++ -*-===//
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/Analysis/ValueLattice.h"
10
11namespace llvm {
12raw_ostream &operator<<(raw_ostream &OS, const ValueLatticeElement &Val) {
13  if (Val.isUnknown())
14    return OS << "unknown";
15  if (Val.isUndef())
16    return OS << "undef";
17  if (Val.isOverdefined())
18    return OS << "overdefined";
19
20  if (Val.isNotConstant())
21    return OS << "notconstant<" << *Val.getNotConstant() << ">";
22  if (Val.isConstantRange())
23    return OS << "constantrange<" << Val.getConstantRange().getLower() << ", "
24              << Val.getConstantRange().getUpper() << ">";
25  return OS << "constant<" << *Val.getConstant() << ">";
26}
27} // end namespace llvm
28