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#pragma once
#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-parameter"
#endif
//===- llvm/AttributeMask.h - Mask for Attributes ---------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
/// \file
// This file declares the AttributeMask class.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_IR_ATTRIBUTEMASK_H
#define LLVM_IR_ATTRIBUTEMASK_H
#include "llvm/ADT/SmallString.h"
#include "llvm/IR/Attributes.h"
#include <bitset>
#include <cassert>
#include <set>
namespace llvm {
//===----------------------------------------------------------------------===//
/// \class
/// This class stores enough information to efficiently remove some attributes
/// from an existing AttrBuilder, AttributeSet or AttributeList.
class AttributeMask {
std::bitset<Attribute::EndAttrKinds> Attrs;
std::set<SmallString<32>, std::less<>> TargetDepAttrs;
public:
AttributeMask() = default;
AttributeMask(const AttributeMask &) = delete;
AttributeMask(AttributeMask &&) = default;
AttributeMask(AttributeSet AS) {
for (Attribute A : AS)
addAttribute(A);
}
/// Add an attribute to the mask.
AttributeMask &addAttribute(Attribute::AttrKind Val) {
assert((unsigned)Val < Attribute::EndAttrKinds &&
"Attribute out of range!");
Attrs[Val] = true;
return *this;
}
/// Add the Attribute object to the builder.
AttributeMask &addAttribute(Attribute A) {
if (A.isStringAttribute())
addAttribute(A.getKindAsString());
else
addAttribute(A.getKindAsEnum());
return *this;
}
/// Add the target-dependent attribute to the builder.
AttributeMask &addAttribute(StringRef A) {
TargetDepAttrs.insert(A);
return *this;
}
/// Return true if the builder has the specified attribute.
bool contains(Attribute::AttrKind A) const {
assert((unsigned)A < Attribute::EndAttrKinds && "Attribute out of range!");
return Attrs[A];
}
/// Return true if the builder has the specified target-dependent
/// attribute.
bool contains(StringRef A) const { return TargetDepAttrs.count(A); }
/// Return true if the mask contains the specified attribute.
bool contains(Attribute A) const {
if (A.isStringAttribute())
return contains(A.getKindAsString());
return contains(A.getKindAsEnum());
}
};
} // end namespace llvm
#endif // LLVM_IR_ATTRIBUTEMASK_H
#ifdef __GNUC__
#pragma GCC diagnostic pop
#endif
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