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214b27286d
CodeGenDAGPatterns, where it can be used in other tablegen backends. This allows the inference to be done for DAGISelEmitter so that it gets accurate mayLoad/mayStore/isSimpleLoad flags. This brings MemOperand functionality back to where it was before 48329. However, it doesn't solve the problem of anonymous patterns which expand to code that does loads or stores. llvm-svn: 49123
64 lines
1.9 KiB
C++
64 lines
1.9 KiB
C++
//===- InstrInfoEmitter.h - Generate a Instruction Set Desc. ----*- 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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// This tablegen backend is responsible for emitting a description of the target
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// instruction set for the code generator.
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//
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//===----------------------------------------------------------------------===//
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#ifndef INSTRINFO_EMITTER_H
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#define INSTRINFO_EMITTER_H
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#include "TableGenBackend.h"
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#include "CodeGenDAGPatterns.h"
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#include <vector>
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#include <map>
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namespace llvm {
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class StringInit;
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class IntInit;
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class ListInit;
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class CodeGenInstruction;
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class InstrInfoEmitter : public TableGenBackend {
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RecordKeeper &Records;
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CodeGenDAGPatterns CDP;
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std::map<std::string, unsigned> ItinClassMap;
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public:
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InstrInfoEmitter(RecordKeeper &R) : Records(R), CDP(R) { }
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// run - Output the instruction set description, returning true on failure.
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void run(std::ostream &OS);
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private:
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typedef std::map<std::vector<std::string>, unsigned> OperandInfoMapTy;
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void emitRecord(const CodeGenInstruction &Inst, unsigned Num,
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Record *InstrInfo,
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std::map<std::vector<Record*>, unsigned> &EL,
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const OperandInfoMapTy &OpInfo,
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std::ostream &OS);
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void emitShiftedValue(Record *R, StringInit *Val, IntInit *Shift,
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std::ostream &OS);
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// Itinerary information.
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void GatherItinClasses();
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unsigned getItinClassNumber(const Record *InstRec);
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// Operand information.
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void EmitOperandInfo(std::ostream &OS, OperandInfoMapTy &OperandInfoIDs);
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std::vector<std::string> GetOperandInfo(const CodeGenInstruction &Inst);
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};
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} // End llvm namespace
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#endif
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