1 //===-- Value.cpp -----------------------------------------------*- 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 // This file defines support functions for the `Value` type. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #include "clang/Analysis/FlowSensitive/Value.h" 14 #include "clang/Analysis/FlowSensitive/DebugSupport.h" 15 #include "llvm/Support/Casting.h" 16 17 namespace clang { 18 namespace dataflow { 19 20 static bool areEquivalentIndirectionValues(const Value &Val1, 21 const Value &Val2) { 22 if (auto *IndVal1 = dyn_cast<PointerValue>(&Val1)) { 23 auto *IndVal2 = cast<PointerValue>(&Val2); 24 return &IndVal1->getPointeeLoc() == &IndVal2->getPointeeLoc(); 25 } 26 return false; 27 } 28 29 bool areEquivalentValues(const Value &Val1, const Value &Val2) { 30 return &Val1 == &Val2 || (Val1.getKind() == Val2.getKind() && 31 (isa<TopBoolValue>(&Val1) || 32 areEquivalentIndirectionValues(Val1, Val2))); 33 } 34 35 raw_ostream &operator<<(raw_ostream &OS, const Value &Val) { 36 switch (Val.getKind()) { 37 case Value::Kind::Integer: 38 return OS << "Integer(@" << &Val << ")"; 39 case Value::Kind::Pointer: 40 return OS << "Pointer(" << &cast<PointerValue>(Val).getPointeeLoc() << ")"; 41 case Value::Kind::Record: 42 return OS << "Record(" << &cast<RecordValue>(Val).getLoc() << ")"; 43 case Value::Kind::TopBool: 44 return OS << "TopBool(" << cast<TopBoolValue>(Val).getAtom() << ")"; 45 case Value::Kind::AtomicBool: 46 return OS << "AtomicBool(" << cast<AtomicBoolValue>(Val).getAtom() << ")"; 47 case Value::Kind::FormulaBool: 48 return OS << "FormulaBool(" << cast<FormulaBoolValue>(Val).formula() << ")"; 49 } 50 llvm_unreachable("Unknown clang::dataflow::Value::Kind enum"); 51 } 52 53 } // namespace dataflow 54 } // namespace clang 55