mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 04:02:41 +01:00
102 lines
4.0 KiB
C++
102 lines
4.0 KiB
C++
//===- SubtargetFeatureInfo.h - Helpers for subtarget features --*- 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_UTIL_TABLEGEN_SUBTARGETFEATUREINFO_H
|
|
#define LLVM_UTIL_TABLEGEN_SUBTARGETFEATUREINFO_H
|
|
|
|
#include "llvm/TableGen/Record.h"
|
|
#include <map>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
namespace llvm {
|
|
struct SubtargetFeatureInfo;
|
|
using SubtargetFeatureInfoMap = std::map<Record *, SubtargetFeatureInfo, LessRecordByID>;
|
|
|
|
/// Helper class for storing information on a subtarget feature which
|
|
/// participates in instruction matching.
|
|
struct SubtargetFeatureInfo {
|
|
/// The predicate record for this feature.
|
|
Record *TheDef;
|
|
|
|
/// An unique index assigned to represent this feature.
|
|
uint64_t Index;
|
|
|
|
SubtargetFeatureInfo(Record *D, uint64_t Idx) : TheDef(D), Index(Idx) {}
|
|
|
|
/// The name of the enumerated constant identifying this feature.
|
|
std::string getEnumName() const {
|
|
return "Feature_" + TheDef->getName().str();
|
|
}
|
|
|
|
/// The name of the enumerated constant identifying the bitnumber for
|
|
/// this feature.
|
|
std::string getEnumBitName() const {
|
|
return "Feature_" + TheDef->getName().str() + "Bit";
|
|
}
|
|
|
|
bool mustRecomputePerFunction() const {
|
|
return TheDef->getValueAsBit("RecomputePerFunction");
|
|
}
|
|
|
|
void dump() const;
|
|
static std::vector<std::pair<Record *, SubtargetFeatureInfo>>
|
|
getAll(const RecordKeeper &Records);
|
|
|
|
/// Emit the subtarget feature flag definitions.
|
|
///
|
|
/// This version emits the bit index for the feature and can therefore support
|
|
/// more than 64 feature bits.
|
|
static void
|
|
emitSubtargetFeatureBitEnumeration(SubtargetFeatureInfoMap &SubtargetFeatures,
|
|
raw_ostream &OS);
|
|
|
|
static void emitNameTable(SubtargetFeatureInfoMap &SubtargetFeatures,
|
|
raw_ostream &OS);
|
|
|
|
/// Emit the function to compute the list of available features given a
|
|
/// subtarget.
|
|
///
|
|
/// This version is used for subtarget features defined using Predicate<>
|
|
/// and supports more than 64 feature bits.
|
|
///
|
|
/// \param TargetName The name of the target as used in class prefixes (e.g.
|
|
/// <TargetName>Subtarget)
|
|
/// \param ClassName The name of the class (without the <Target> prefix)
|
|
/// that will contain the generated functions.
|
|
/// \param FuncName The name of the function to emit.
|
|
/// \param SubtargetFeatures A map of TableGen records to the
|
|
/// SubtargetFeatureInfo equivalent.
|
|
/// \param ExtraParams Additional arguments to the generated function.
|
|
static void
|
|
emitComputeAvailableFeatures(StringRef TargetName, StringRef ClassName,
|
|
StringRef FuncName,
|
|
SubtargetFeatureInfoMap &SubtargetFeatures,
|
|
raw_ostream &OS, StringRef ExtraParams = "");
|
|
|
|
/// Emit the function to compute the list of available features given a
|
|
/// subtarget.
|
|
///
|
|
/// This version is used for subtarget features defined using
|
|
/// AssemblerPredicate<> and supports up to 64 feature bits.
|
|
///
|
|
/// \param TargetName The name of the target as used in class prefixes (e.g.
|
|
/// <TargetName>Subtarget)
|
|
/// \param ClassName The name of the class (without the <Target> prefix)
|
|
/// that will contain the generated functions.
|
|
/// \param FuncName The name of the function to emit.
|
|
/// \param SubtargetFeatures A map of TableGen records to the
|
|
/// SubtargetFeatureInfo equivalent.
|
|
static void emitComputeAssemblerAvailableFeatures(
|
|
StringRef TargetName, StringRef ClassName, StringRef FuncName,
|
|
SubtargetFeatureInfoMap &SubtargetFeatures, raw_ostream &OS);
|
|
};
|
|
} // end namespace llvm
|
|
|
|
#endif // LLVM_UTIL_TABLEGEN_SUBTARGETFEATUREINFO_H
|