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77c4679dae
to pass around a struct instead of a large set of individual values. This cleans up the interface and allows more information to be added to the struct for future targets without requiring changes to each and every target. NV_CONTRIB llvm-svn: 157479
145 lines
4.6 KiB
C++
145 lines
4.6 KiB
C++
//===-- NVPTXISelLowering.h - NVPTX DAG Lowering Interface ------*- 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 file defines the interfaces that NVPTX uses to lower LLVM code into a
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// selection DAG.
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//
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//===----------------------------------------------------------------------===//
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#ifndef NVPTXISELLOWERING_H
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#define NVPTXISELLOWERING_H
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#include "NVPTX.h"
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#include "NVPTXSubtarget.h"
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#include "llvm/CodeGen/SelectionDAG.h"
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#include "llvm/Target/TargetLowering.h"
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namespace llvm {
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namespace NVPTXISD {
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enum NodeType {
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// Start the numbering from where ISD NodeType finishes.
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FIRST_NUMBER = ISD::BUILTIN_OP_END,
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Wrapper,
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CALL,
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RET_FLAG,
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LOAD_PARAM,
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NVBuiltin,
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DeclareParam,
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DeclareScalarParam,
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DeclareRetParam,
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DeclareRet,
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DeclareScalarRet,
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LoadParam,
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StoreParam,
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StoreParamS32, // to sext and store a <32bit value, not used currently
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StoreParamU32, // to zext and store a <32bit value, not used currently
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MoveToParam,
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PrintCall,
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PrintCallUni,
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CallArgBegin,
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CallArg,
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LastCallArg,
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CallArgEnd,
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CallVoid,
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CallVal,
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CallSymbol,
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Prototype,
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MoveParam,
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MoveRetval,
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MoveToRetval,
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StoreRetval,
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PseudoUseParam,
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RETURN,
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CallSeqBegin,
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CallSeqEnd,
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Dummy
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};
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}
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//===--------------------------------------------------------------------===//
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// TargetLowering Implementation
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//===--------------------------------------------------------------------===//
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class NVPTXTargetLowering : public TargetLowering {
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public:
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explicit NVPTXTargetLowering(NVPTXTargetMachine &TM);
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virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const;
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SDValue LowerGlobalAddress(SDValue Op, SelectionDAG &DAG) const;
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SDValue LowerGlobalAddress(const GlobalValue *GV, int64_t Offset,
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SelectionDAG &DAG) const;
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virtual const char *getTargetNodeName(unsigned Opcode) const;
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bool isTypeSupportedInIntrinsic(MVT VT) const;
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bool getTgtMemIntrinsic(IntrinsicInfo& Info, const CallInst &I,
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unsigned Intrinsic) const;
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/// isLegalAddressingMode - Return true if the addressing mode represented
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/// by AM is legal for this target, for a load/store of the specified type
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/// Used to guide target specific optimizations, like loop strength
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/// reduction (LoopStrengthReduce.cpp) and memory optimization for
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/// address mode (CodeGenPrepare.cpp)
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virtual bool isLegalAddressingMode(const AddrMode &AM, Type *Ty) const;
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/// getFunctionAlignment - Return the Log2 alignment of this function.
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virtual unsigned getFunctionAlignment(const Function *F) const;
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virtual EVT getSetCCResultType(EVT VT) const {
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return MVT::i1;
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}
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ConstraintType getConstraintType(const std::string &Constraint) const;
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std::pair<unsigned, const TargetRegisterClass*>
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getRegForInlineAsmConstraint(const std::string &Constraint, EVT VT) const;
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virtual SDValue
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LowerFormalArguments(SDValue Chain, CallingConv::ID CallConv, bool isVarArg,
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const SmallVectorImpl<ISD::InputArg> &Ins, DebugLoc dl,
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SelectionDAG &DAG,
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SmallVectorImpl<SDValue> &InVals) const;
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virtual SDValue
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LowerCall(CallLoweringInfo &CLI, SmallVectorImpl<SDValue> &InVals) const;
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std::string getPrototype(Type *, const ArgListTy &,
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const SmallVectorImpl<ISD::OutputArg> &,
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unsigned retAlignment) const;
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virtual SDValue
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LowerReturn(SDValue Chain, CallingConv::ID CallConv, bool isVarArg,
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const SmallVectorImpl<ISD::OutputArg> &Outs,
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const SmallVectorImpl<SDValue> &OutVals, DebugLoc dl,
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SelectionDAG &DAG) const;
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virtual void LowerAsmOperandForConstraint(SDValue Op, std::string &Constraint,
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std::vector<SDValue> &Ops,
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SelectionDAG &DAG) const;
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NVPTXTargetMachine *nvTM;
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// PTX always uses 32-bit shift amounts
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virtual MVT getShiftAmountTy(EVT LHSTy) const {
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return MVT::i32;
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}
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private:
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const NVPTXSubtarget &nvptxSubtarget; // cache the subtarget here
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SDValue getExtSymb(SelectionDAG &DAG, const char *name, int idx, EVT =
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MVT::i32) const;
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SDValue getParamSymbol(SelectionDAG &DAG, int idx, EVT = MVT::i32) const;
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SDValue getParamHelpSymbol(SelectionDAG &DAG, int idx);
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SDValue LowerCONCAT_VECTORS(SDValue Op, SelectionDAG &DAG) const;
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};
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} // namespace llvm
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#endif // NVPTXISELLOWERING_H
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