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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
59 lines
1.9 KiB
C++
59 lines
1.9 KiB
C++
//===-- llvm/MC/MCInstrInfo.h - Target Instruction Info ---------*- 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 describes the target machine instruction set.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_MC_MCINSTRINFO_H
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#define LLVM_MC_MCINSTRINFO_H
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#include "llvm/MC/MCInstrDesc.h"
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#include <cassert>
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namespace llvm {
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//---------------------------------------------------------------------------
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/// Interface to description of machine instruction set.
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class MCInstrInfo {
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const MCInstrDesc *Desc; // Raw array to allow static init'n
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const unsigned *InstrNameIndices; // Array for name indices in InstrNameData
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const char *InstrNameData; // Instruction name string pool
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unsigned NumOpcodes; // Number of entries in the desc array
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public:
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/// Initialize MCInstrInfo, called by TableGen auto-generated routines.
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/// *DO NOT USE*.
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void InitMCInstrInfo(const MCInstrDesc *D, const unsigned *NI, const char *ND,
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unsigned NO) {
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Desc = D;
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InstrNameIndices = NI;
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InstrNameData = ND;
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NumOpcodes = NO;
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}
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unsigned getNumOpcodes() const { return NumOpcodes; }
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/// Return the machine instruction descriptor that corresponds to the
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/// specified instruction opcode.
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const MCInstrDesc &get(unsigned Opcode) const {
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assert(Opcode < NumOpcodes && "Invalid opcode!");
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return Desc[Opcode];
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}
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/// Returns the name for the instructions with the given opcode.
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StringRef getName(unsigned Opcode) const {
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assert(Opcode < NumOpcodes && "Invalid opcode!");
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return StringRef(&InstrNameData[InstrNameIndices[Opcode]]);
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}
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};
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} // End llvm namespace
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#endif
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