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1 //===---- Mips16ISelDAGToDAG.h - A Dag to Dag Inst Selector for Mips ------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // Subclass of MipsDAGToDAGISel specialized for mips16.
12 //===----------------------------------------------------------------------===//
14 #ifndef LLVM_LIB_TARGET_MIPS_MIPS16ISELDAGTODAG_H
15 #define LLVM_LIB_TARGET_MIPS_MIPS16ISELDAGTODAG_H
17 #include "MipsISelDAGToDAG.h"
21 class Mips16DAGToDAGISel
: public MipsDAGToDAGISel
{
23 explicit Mips16DAGToDAGISel(MipsTargetMachine
&TM
) : MipsDAGToDAGISel(TM
) {}
26 std::pair
<SDNode
*, SDNode
*> selectMULT(SDNode
*N
, unsigned Opc
, SDLoc DL
,
27 EVT Ty
, bool HasLo
, bool HasHi
);
29 SDValue
getMips16SPAliasReg();
31 bool runOnMachineFunction(MachineFunction
&MF
) override
;
33 void getMips16SPRefReg(SDNode
*Parent
, SDValue
&AliasReg
);
35 bool selectAddr16(SDNode
*Parent
, SDValue N
, SDValue
&Base
,
36 SDValue
&Offset
, SDValue
&Alias
) override
;
38 std::pair
<bool, SDNode
*> selectNode(SDNode
*Node
) override
;
40 void processFunctionAfterISel(MachineFunction
&MF
) override
;
42 // Insert instructions to initialize the global base register in the
43 // first MBB of the function.
44 void initGlobalBaseReg(MachineFunction
&MF
);
46 void initMips16SPAliasReg(MachineFunction
&MF
);
49 FunctionPass
*createMips16ISelDag(MipsTargetMachine
&TM
);