forked from OSchip/llvm-project
58 lines
2.0 KiB
C
58 lines
2.0 KiB
C
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//===- SubtargetFeatureInfo.h - Helpers for subtarget features ------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_UTIL_TABLEGEN_SUBTARGETFEATUREINFO_H
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#define LLVM_UTIL_TABLEGEN_SUBTARGETFEATUREINFO_H
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#include "llvm/TableGen/Error.h"
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#include "llvm/TableGen/Record.h"
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#include <map>
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namespace llvm {
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class Record;
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class RecordKeeper;
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/// Helper class for storing information on a subtarget feature which
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/// participates in instruction matching.
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struct SubtargetFeatureInfo {
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/// \brief The predicate record for this feature.
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Record *TheDef;
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/// \brief An unique index assigned to represent this feature.
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uint64_t Index;
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SubtargetFeatureInfo(Record *D, uint64_t Idx) : TheDef(D), Index(Idx) {}
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/// \brief The name of the enumerated constant identifying this feature.
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std::string getEnumName() const { return "Feature_" + TheDef->getName(); }
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void dump() const;
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static std::vector<std::pair<Record *, SubtargetFeatureInfo>>
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getAll(const RecordKeeper &Records);
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/// Emit the function to compute the list of available features given a
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/// subtarget.
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///
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/// \param TargetName The name of the target as used in class prefixes (e.g.
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/// <TargetName>Subtarget)
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/// \param ClassName The name of the class (without the <Target> prefix)
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/// that will contain the generated functions.
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/// \param SubtargetFeatures A map of TableGen records to the
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/// SubtargetFeatureInfo equivalent.
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static void emitComputeAvailableFeatures(
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StringRef TargetName, StringRef ClassName,
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std::map<Record *, SubtargetFeatureInfo, LessRecordByID>
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&SubtargetFeatures,
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raw_ostream &OS);
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};
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} // end namespace llvm
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#endif // LLVM_UTIL_TABLEGEN_SUBTARGETFEATUREINFO_H
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