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1 | //===---- Mips16ISelDAGToDAG.h - A Dag to Dag Inst Selector for Mips ------===// |
2 | // | |
3 | // The LLVM Compiler Infrastructure | |
4 | // | |
5 | // This file is distributed under the University of Illinois Open Source | |
6 | // License. See LICENSE.TXT for details. | |
7 | // | |
8 | //===----------------------------------------------------------------------===// | |
9 | // | |
10 | // Subclass of MipsDAGToDAGISel specialized for mips16. | |
11 | // | |
12 | //===----------------------------------------------------------------------===// | |
13 | ||
1a4d82fc JJ |
14 | #ifndef LLVM_LIB_TARGET_MIPS_MIPS16ISELDAGTODAG_H |
15 | #define LLVM_LIB_TARGET_MIPS_MIPS16ISELDAGTODAG_H | |
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16 | |
17 | #include "MipsISelDAGToDAG.h" | |
18 | ||
19 | namespace llvm { | |
20 | ||
21 | class Mips16DAGToDAGISel : public MipsDAGToDAGISel { | |
22 | public: | |
23 | explicit Mips16DAGToDAGISel(MipsTargetMachine &TM) : MipsDAGToDAGISel(TM) {} | |
24 | ||
25 | private: | |
1a4d82fc | 26 | std::pair<SDNode*, SDNode*> selectMULT(SDNode *N, unsigned Opc, SDLoc DL, |
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27 | EVT Ty, bool HasLo, bool HasHi); |
28 | ||
29 | SDValue getMips16SPAliasReg(); | |
30 | ||
1a4d82fc JJ |
31 | bool runOnMachineFunction(MachineFunction &MF) override; |
32 | ||
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33 | void getMips16SPRefReg(SDNode *Parent, SDValue &AliasReg); |
34 | ||
1a4d82fc JJ |
35 | bool selectAddr16(SDNode *Parent, SDValue N, SDValue &Base, |
36 | SDValue &Offset, SDValue &Alias) override; | |
970d7e83 | 37 | |
1a4d82fc | 38 | std::pair<bool, SDNode*> selectNode(SDNode *Node) override; |
970d7e83 | 39 | |
1a4d82fc | 40 | void processFunctionAfterISel(MachineFunction &MF) override; |
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41 | |
42 | // Insert instructions to initialize the global base register in the | |
43 | // first MBB of the function. | |
44 | void initGlobalBaseReg(MachineFunction &MF); | |
45 | ||
46 | void initMips16SPAliasReg(MachineFunction &MF); | |
47 | }; | |
48 | ||
49 | FunctionPass *createMips16ISelDag(MipsTargetMachine &TM); | |
50 | ||
51 | } | |
52 | ||
53 | #endif |