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1 //===- ValueLattice.cpp - Value constraint analysis -------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 #include "llvm/Analysis/ValueLattice.h"
11
12 namespace llvm {
13 raw_ostream &operator<<(raw_ostream &OS, const ValueLatticeElement &Val) {
14   if (Val.isUndefined())
15     return OS << "undefined";
16   if (Val.isOverdefined())
17     return OS << "overdefined";
18
19   if (Val.isNotConstant())
20     return OS << "notconstant<" << *Val.getNotConstant() << ">";
21   if (Val.isConstantRange())
22     return OS << "constantrange<" << Val.getConstantRange().getLower() << ", "
23               << Val.getConstantRange().getUpper() << ">";
24   return OS << "constant<" << *Val.getConstant() << ">";
25 }
26 } // end namespace llvm