6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
87 lines
2.5 KiB
C++
87 lines
2.5 KiB
C++
//===- llvm/AttributeMask.h - Mask for Attributes ---------------*- 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 declares the AttributeMask class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_IR_ATTRIBUTEMASK_H
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#define LLVM_IR_ATTRIBUTEMASK_H
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#include "llvm/ADT/SmallString.h"
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#include "llvm/IR/Attributes.h"
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#include <bitset>
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#include <cassert>
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#include <set>
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namespace llvm {
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//===----------------------------------------------------------------------===//
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/// \class
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/// This class stores enough information to efficiently remove some attributes
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/// from an existing AttrBuilder, AttributeSet or AttributeList.
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class AttributeMask {
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std::bitset<Attribute::EndAttrKinds> Attrs;
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std::set<SmallString<32>, std::less<>> TargetDepAttrs;
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public:
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AttributeMask() = default;
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AttributeMask(const AttributeMask &) = delete;
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AttributeMask(AttributeMask &&) = default;
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AttributeMask(AttributeSet AS) {
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for (Attribute A : AS)
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addAttribute(A);
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}
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/// Add an attribute to the mask.
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AttributeMask &addAttribute(Attribute::AttrKind Val) {
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assert((unsigned)Val < Attribute::EndAttrKinds &&
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"Attribute out of range!");
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Attrs[Val] = true;
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return *this;
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}
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/// Add the Attribute object to the builder.
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AttributeMask &addAttribute(Attribute A) {
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if (A.isStringAttribute())
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addAttribute(A.getKindAsString());
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else
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addAttribute(A.getKindAsEnum());
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return *this;
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}
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/// Add the target-dependent attribute to the builder.
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AttributeMask &addAttribute(StringRef A) {
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TargetDepAttrs.insert(A);
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return *this;
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}
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/// Return true if the builder has the specified attribute.
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bool contains(Attribute::AttrKind A) const {
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assert((unsigned)A < Attribute::EndAttrKinds && "Attribute out of range!");
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return Attrs[A];
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}
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/// Return true if the builder has the specified target-dependent
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/// attribute.
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bool contains(StringRef A) const { return TargetDepAttrs.count(A); }
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/// Return true if the mask contains the specified attribute.
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bool contains(Attribute A) const {
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if (A.isStringAttribute())
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return contains(A.getKindAsString());
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return contains(A.getKindAsEnum());
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}
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};
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} // end namespace llvm
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#endif // LLVM_IR_ATTRIBUTEMASK_H
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