40 lines
1.4 KiB
C++
40 lines
1.4 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 "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<ReferenceValue>(&Val1)) {
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auto *IndVal2 = cast<ReferenceValue>(&Val2);
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return &IndVal1->getReferentLoc() == &IndVal2->getReferentLoc();
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}
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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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return &Val1 == &Val2 || (Val1.getKind() == Val2.getKind() &&
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(isa<TopBoolValue>(&Val1) ||
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areEquivalentIndirectionValues(Val1, Val2)));
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}
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} // namespace dataflow
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} // namespace clang
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