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50 lines
1.4 KiB
C++
50 lines
1.4 KiB
C++
//===- CodeEmitterGen.h - Code Emitter Generator ----------------*- C++ -*-===//
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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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//
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// FIXME: document
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//
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//===----------------------------------------------------------------------===//
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#ifndef CODEMITTERGEN_H
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#define CODEMITTERGEN_H
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#include "TableGenBackend.h"
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#include <vector>
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#include <string>
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namespace llvm {
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class RecordVal;
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class BitsInit;
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class CodeGenTarget;
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class CodeEmitterGen : public TableGenBackend {
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RecordKeeper &Records;
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public:
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CodeEmitterGen(RecordKeeper &R) : Records(R) {}
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// run - Output the code emitter
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void run(raw_ostream &o);
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private:
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void emitMachineOpEmitter(raw_ostream &o, const std::string &Namespace);
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void emitGetValueBit(raw_ostream &o, const std::string &Namespace);
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void reverseBits(std::vector<Record*> &Insts);
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int getVariableBit(const std::string &VarName, BitsInit *BI, int bit);
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std::string getInstructionCase(Record *R, CodeGenTarget &Target);
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void
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AddCodeToMergeInOperand(Record *R, BitsInit *BI, const std::string &VarName,
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unsigned &NumberedOp,
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std::string &Case, CodeGenTarget &Target);
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};
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} // End llvm namespace
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#endif
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