mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 12:12:47 +01:00
82 lines
2.9 KiB
C++
82 lines
2.9 KiB
C++
//===-- llvm/MC/MCInstrInfo.h - Target Instruction Info ---------*- 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 describes the target machine instruction set.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_MC_MCINSTRINFO_H
|
|
#define LLVM_MC_MCINSTRINFO_H
|
|
|
|
#include "llvm/MC/MCInstrDesc.h"
|
|
#include <cassert>
|
|
|
|
namespace llvm {
|
|
|
|
class MCSubtargetInfo;
|
|
|
|
//---------------------------------------------------------------------------
|
|
/// Interface to description of machine instruction set.
|
|
class MCInstrInfo {
|
|
public:
|
|
using ComplexDeprecationPredicate = bool (*)(MCInst &,
|
|
const MCSubtargetInfo &,
|
|
std::string &);
|
|
|
|
private:
|
|
const MCInstrDesc *Desc; // Raw array to allow static init'n
|
|
const unsigned *InstrNameIndices; // Array for name indices in InstrNameData
|
|
const char *InstrNameData; // Instruction name string pool
|
|
// Subtarget feature that an instruction is deprecated on, if any
|
|
// -1 implies this is not deprecated by any single feature. It may still be
|
|
// deprecated due to a "complex" reason, below.
|
|
const uint8_t *DeprecatedFeatures;
|
|
// A complex method to determine if a certain instruction is deprecated or
|
|
// not, and return the reason for deprecation.
|
|
const ComplexDeprecationPredicate *ComplexDeprecationInfos;
|
|
unsigned NumOpcodes; // Number of entries in the desc array
|
|
|
|
public:
|
|
/// Initialize MCInstrInfo, called by TableGen auto-generated routines.
|
|
/// *DO NOT USE*.
|
|
void InitMCInstrInfo(const MCInstrDesc *D, const unsigned *NI, const char *ND,
|
|
const uint8_t *DF,
|
|
const ComplexDeprecationPredicate *CDI, unsigned NO) {
|
|
Desc = D;
|
|
InstrNameIndices = NI;
|
|
InstrNameData = ND;
|
|
DeprecatedFeatures = DF;
|
|
ComplexDeprecationInfos = CDI;
|
|
NumOpcodes = NO;
|
|
}
|
|
|
|
unsigned getNumOpcodes() const { return NumOpcodes; }
|
|
|
|
/// Return the machine instruction descriptor that corresponds to the
|
|
/// specified instruction opcode.
|
|
const MCInstrDesc &get(unsigned Opcode) const {
|
|
assert(Opcode < NumOpcodes && "Invalid opcode!");
|
|
return Desc[Opcode];
|
|
}
|
|
|
|
/// Returns the name for the instructions with the given opcode.
|
|
StringRef getName(unsigned Opcode) const {
|
|
assert(Opcode < NumOpcodes && "Invalid opcode!");
|
|
return StringRef(&InstrNameData[InstrNameIndices[Opcode]]);
|
|
}
|
|
|
|
/// Returns true if a certain instruction is deprecated and if so
|
|
/// returns the reason in \p Info.
|
|
bool getDeprecatedInfo(MCInst &MI, const MCSubtargetInfo &STI,
|
|
std::string &Info) const;
|
|
};
|
|
|
|
} // End llvm namespace
|
|
|
|
#endif
|