62 lines
2.2 KiB
C++
62 lines
2.2 KiB
C++
//===-- Value.cpp -----------------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines support functions for the `Value` type.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Analysis/FlowSensitive/Value.h"
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#include "clang/Analysis/FlowSensitive/DebugSupport.h"
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#include "llvm/Support/Casting.h"
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namespace clang {
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namespace dataflow {
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static bool areEquivalentIndirectionValues(const Value &Val1,
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const Value &Val2) {
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if (auto *IndVal1 = dyn_cast<PointerValue>(&Val1)) {
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auto *IndVal2 = cast<PointerValue>(&Val2);
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return &IndVal1->getPointeeLoc() == &IndVal2->getPointeeLoc();
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}
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return false;
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}
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bool areEquivalentValues(const Value &Val1, const Value &Val2) {
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if (&Val1 == &Val2)
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return true;
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if (Val1.getKind() != Val2.getKind())
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return false;
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// If values are distinct and have properties, we don't consider them equal,
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// leaving equality up to the user model.
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if (!Val1.properties().empty() || !Val2.properties().empty())
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return false;
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if (isa<TopBoolValue>(&Val1))
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return true;
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return areEquivalentIndirectionValues(Val1, Val2);
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}
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raw_ostream &operator<<(raw_ostream &OS, const Value &Val) {
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switch (Val.getKind()) {
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case Value::Kind::Integer:
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return OS << "Integer(@" << &Val << ")";
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case Value::Kind::Pointer:
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return OS << "Pointer(" << &cast<PointerValue>(Val).getPointeeLoc() << ")";
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case Value::Kind::Record:
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return OS << "Record(" << &cast<RecordValue>(Val).getLoc() << ")";
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case Value::Kind::TopBool:
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return OS << "TopBool(" << cast<TopBoolValue>(Val).getAtom() << ")";
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case Value::Kind::AtomicBool:
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return OS << "AtomicBool(" << cast<AtomicBoolValue>(Val).getAtom() << ")";
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case Value::Kind::FormulaBool:
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return OS << "FormulaBool(" << cast<FormulaBoolValue>(Val).formula() << ")";
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}
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llvm_unreachable("Unknown clang::dataflow::Value::Kind enum");
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}
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} // namespace dataflow
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} // namespace clang
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