llvm/lib/Analysis/ValueLattice.cpp

   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
  11 namespace llvm {
  12 raw_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
  23   if (Val.isConstantRangeIncludingUndef())
  24     return OS << "constantrange incl. undef <"
  25               << Val.getConstantRange(true).getLower() << ", "
  26               << Val.getConstantRange(true).getUpper() << ">";
  27
  28   if (Val.isConstantRange())
  29     return OS << "constantrange<" << Val.getConstantRange().getLower() << ", "
  30               << Val.getConstantRange().getUpper() << ">";
  31   return OS << "constant<" << *Val.getConstant() << ">";
  32 }
  33 } // end namespace llvm