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//===--- CodeGenHwModes.h ---------------------------------------*- 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
//
//===----------------------------------------------------------------------===//
// Classes to parse and store HW mode information for instruction selection.
//===----------------------------------------------------------------------===//
#ifndef LLVM_UTILS_TABLEGEN_COMMON_CODEGENHWMODES_H
#define LLVM_UTILS_TABLEGEN_COMMON_CODEGENHWMODES_H
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/StringRef.h"
#include <cassert>
#include <map>
#include <string>
#include <utility>
#include <vector>
// HwModeId -> list of predicates (definition)
namespace llvm {
class Record;
class RecordKeeper;
struct CodeGenHwModes;
struct HwMode {
HwMode(const Record *R);
StringRef Name;
std::string Features;
std::string Predicates;
void dump() const;
};
struct HwModeSelect {
HwModeSelect(const Record *R, CodeGenHwModes &CGH);
typedef std::pair<unsigned, const Record *> PairType;
std::vector<PairType> Items;
void dump() const;
};
struct CodeGenHwModes {
enum : unsigned { DefaultMode = 0 };
static StringRef DefaultModeName;
CodeGenHwModes(const RecordKeeper &R);
unsigned getHwModeId(const Record *R) const;
const HwMode &getMode(unsigned Id) const {
assert(Id != 0 && "Mode id of 0 is reserved for the default mode");
return Modes[Id - 1];
}
StringRef getModeName(unsigned Id, bool IncludeDefault = false) const {
if (IncludeDefault && Id == CodeGenHwModes::DefaultMode)
return DefaultModeName;
return getMode(Id).Name;
}
const HwModeSelect &getHwModeSelect(const Record *R) const;
const std::map<const Record *, HwModeSelect> &getHwModeSelects() const {
return ModeSelects;
}
unsigned getNumModeIds() const { return Modes.size() + 1; }
void dump() const;
private:
const RecordKeeper &Records;
DenseMap<const Record *, unsigned> ModeIds; // HwMode Record -> HwModeId
std::vector<HwMode> Modes;
std::map<const Record *, HwModeSelect> ModeSelects;
};
} // namespace llvm
#endif // LLVM_UTILS_TABLEGEN_COMMON_CODEGENHWMODES_H
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