llvm/llvm/lib/Target/X86/X86InstrFMA3Info.h

//===- X86InstrFMA3Info.h - X86 FMA3 Instruction Information ----*- 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
//
//===----------------------------------------------------------------------===//
//
// This file contains the implementation of the classes providing information
// about existing X86 FMA3 opcodes, classifying and grouping them.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_LIB_TARGET_X86_UTILS_X86INSTRFMA3INFO_H
#define LLVM_LIB_TARGET_X86_UTILS_X86INSTRFMA3INFO_H

#include <cstdint>

namespace llvm {

/// This class is used to group {132, 213, 231} forms of FMA opcodes together.
/// Each of the groups has either 3 opcodes, Also, each group has an attributes
/// field describing it.
struct X86InstrFMA3Group { … };

/// Returns a reference to a group of FMA3 opcodes to where the given
/// \p Opcode is included. If the given \p Opcode is not recognized as FMA3
/// and not included into any FMA3 group, then nullptr is returned.
const X86InstrFMA3Group *getFMA3Group(unsigned Opcode, uint64_t TSFlags);

} // end namespace llvm

#endif // LLVM_LIB_TARGET_X86_UTILS_X86INSTRFMA3INFO_H