annotate lib/Target/Mips/Mips16ISelDAGToDAG.h @ 77:54457678186b LLVM3.6

LLVM 3.6
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Mon, 08 Sep 2014 22:06:00 +0900
parents 95c75e76d11b
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1 //===---- Mips16ISelDAGToDAG.h - A Dag to Dag Inst Selector for Mips ------===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9 //
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10 // Subclass of MipsDAGToDAGISel specialized for mips16.
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11 //
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12 //===----------------------------------------------------------------------===//
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14 #ifndef LLVM_LIB_TARGET_MIPS_MIPS16ISELDAGTODAG_H
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15 #define LLVM_LIB_TARGET_MIPS_MIPS16ISELDAGTODAG_H
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16
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17 #include "MipsISelDAGToDAG.h"
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18
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19 namespace llvm {
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20
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21 class Mips16DAGToDAGISel : public MipsDAGToDAGISel {
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22 public:
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23 explicit Mips16DAGToDAGISel(MipsTargetMachine &TM) : MipsDAGToDAGISel(TM) {}
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24
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25 private:
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26 std::pair<SDNode*, SDNode*> selectMULT(SDNode *N, unsigned Opc, SDLoc DL,
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27 EVT Ty, bool HasLo, bool HasHi);
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28
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29 SDValue getMips16SPAliasReg();
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31 bool runOnMachineFunction(MachineFunction &MF) override;
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33 void getMips16SPRefReg(SDNode *Parent, SDValue &AliasReg);
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35 bool selectAddr16(SDNode *Parent, SDValue N, SDValue &Base,
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36 SDValue &Offset, SDValue &Alias) override;
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38 std::pair<bool, SDNode*> selectNode(SDNode *Node) override;
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40 void processFunctionAfterISel(MachineFunction &MF) override;
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41
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42 // Insert instructions to initialize the global base register in the
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43 // first MBB of the function.
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44 void initGlobalBaseReg(MachineFunction &MF);
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46 void initMips16SPAliasReg(MachineFunction &MF);
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47 };
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49 FunctionPass *createMips16ISelDag(MipsTargetMachine &TM);
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50
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51 }
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53 #endif