1 //===-- NVPTXISelLowering.h - NVPTX DAG Lowering Interface ------*- C++ -*-===//
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 // This file defines the interfaces that NVPTX uses to lower LLVM code into a
13 //===----------------------------------------------------------------------===//
15 #ifndef NVPTXISELLOWERING_H
16 #define NVPTXISELLOWERING_H
19 #include "NVPTXSubtarget.h"
20 #include "llvm/CodeGen/SelectionDAG.h"
21 #include "llvm/Target/TargetLowering.h"
26 // Start the numbering from where ISD NodeType finishes.
27 FIRST_NUMBER = ISD::BUILTIN_OP_END,
40 StoreParamS32, // to sext and store a <32bit value, not used currently
41 StoreParamU32, // to zext and store a <32bit value, not used currently
65 //===--------------------------------------------------------------------===//
66 // TargetLowering Implementation
67 //===--------------------------------------------------------------------===//
68 class NVPTXTargetLowering : public TargetLowering {
70 explicit NVPTXTargetLowering(NVPTXTargetMachine &TM);
71 virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const;
73 SDValue LowerGlobalAddress(SDValue Op, SelectionDAG &DAG) const;
74 SDValue LowerGlobalAddress(const GlobalValue *GV, int64_t Offset,
75 SelectionDAG &DAG) const;
77 virtual const char *getTargetNodeName(unsigned Opcode) const;
79 bool isTypeSupportedInIntrinsic(MVT VT) const;
81 bool getTgtMemIntrinsic(IntrinsicInfo& Info, const CallInst &I,
82 unsigned Intrinsic) const;
84 /// isLegalAddressingMode - Return true if the addressing mode represented
85 /// by AM is legal for this target, for a load/store of the specified type
86 /// Used to guide target specific optimizations, like loop strength
87 /// reduction (LoopStrengthReduce.cpp) and memory optimization for
88 /// address mode (CodeGenPrepare.cpp)
89 virtual bool isLegalAddressingMode(const AddrMode &AM, Type *Ty) const;
91 /// getFunctionAlignment - Return the Log2 alignment of this function.
92 virtual unsigned getFunctionAlignment(const Function *F) const;
94 virtual EVT getSetCCResultType(EVT VT) const {
98 ConstraintType getConstraintType(const std::string &Constraint) const;
99 std::pair<unsigned, const TargetRegisterClass*>
100 getRegForInlineAsmConstraint(const std::string &Constraint, EVT VT) const;
103 LowerFormalArguments(SDValue Chain, CallingConv::ID CallConv, bool isVarArg,
104 const SmallVectorImpl<ISD::InputArg> &Ins, DebugLoc dl,
106 SmallVectorImpl<SDValue> &InVals) const;
108 // This will be re-added once the necessary changes to LowerCallTo are
111 // LowerCall(SDValue Chain, SDValue Callee, CallingConv::ID CallConv,
112 // bool isVarArg, bool doesNotRet, bool &isTailCall,
113 // const SmallVectorImpl<ISD::OutputArg> &Outs,
114 // const SmallVectorImpl<SDValue> &OutVals,
115 // const SmallVectorImpl<ISD::InputArg> &Ins,
116 // DebugLoc dl, SelectionDAG &DAG,
117 // SmallVectorImpl<SDValue> &InVals,
118 // Type *retTy, const ArgListTy &Args) const;
120 std::string getPrototype(Type *, const ArgListTy &,
121 const SmallVectorImpl<ISD::OutputArg> &,
122 unsigned retAlignment) const;
125 LowerReturn(SDValue Chain, CallingConv::ID CallConv, bool isVarArg,
126 const SmallVectorImpl<ISD::OutputArg> &Outs,
127 const SmallVectorImpl<SDValue> &OutVals, DebugLoc dl,
128 SelectionDAG &DAG) const;
130 virtual void LowerAsmOperandForConstraint(SDValue Op, std::string &Constraint,
131 std::vector<SDValue> &Ops,
132 SelectionDAG &DAG) const;
134 NVPTXTargetMachine *nvTM;
136 // PTX always uses 32-bit shift amounts
137 virtual MVT getShiftAmountTy(EVT LHSTy) const {
142 const NVPTXSubtarget &nvptxSubtarget; // cache the subtarget here
144 SDValue getExtSymb(SelectionDAG &DAG, const char *name, int idx, EVT =
146 SDValue getParamSymbol(SelectionDAG &DAG, int idx, EVT = MVT::i32) const;
147 SDValue getParamHelpSymbol(SelectionDAG &DAG, int idx);
149 SDValue LowerCONCAT_VECTORS(SDValue Op, SelectionDAG &DAG) const;
153 #endif // NVPTXISELLOWERING_H