41 lines
1.3 KiB
C++
41 lines
1.3 KiB
C++
//===-- llvm/Support/UndefPoison.h - Undef/Poison tracking ------*- 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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/// \file
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/// This file contains the UndefPoisonKind enum and helper functions.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_SUPPORT_UNDEFPOISON_H
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#define LLVM_SUPPORT_UNDEFPOISON_H
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namespace llvm {
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/// Enumeration to track whether we are interested in Undef, Poison, or both.
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enum class UndefPoisonKind {
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PoisonOnly = (1 << 0),
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UndefOnly = (1 << 1),
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UndefOrPoison = PoisonOnly | UndefOnly,
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};
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/// Returns true if \p Kind includes the Poison bit.
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inline bool includesPoison(UndefPoisonKind Kind) {
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return (static_cast<unsigned>(Kind) &
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static_cast<unsigned>(UndefPoisonKind::PoisonOnly)) != 0;
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}
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/// Returns true if \p Kind includes the Undef bit.
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inline bool includesUndef(UndefPoisonKind Kind) {
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return (static_cast<unsigned>(Kind) &
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static_cast<unsigned>(UndefPoisonKind::UndefOnly)) != 0;
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}
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} // namespace llvm
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#endif // LLVM_SUPPORT_UNDEFPOISON_H
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