lib/Target/PTX/PTXISelLowering.h

   1 //==-- PTXISelLowering.h - PTX DAG Lowering Interface ------------*- C++ -*-==//
   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 // This file defines the interfaces that PTX uses to lower LLVM code into a
  11 // selection DAG.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #ifndef PTX_ISEL_LOWERING_H
  16 #define PTX_ISEL_LOWERING_H
  17
  18 #include "llvm/Target/TargetLowering.h"
  19
  20 namespace llvm {
  21 class PTXSubtarget;
  22 class PTXTargetMachine;
  23
  24 namespace PTXISD {
  25   enum NodeType {
  26     FIRST_NUMBER = ISD::BUILTIN_OP_END,
  27     EXIT,
  28     RET
  29   };
  30 } // namespace PTXISD
  31
  32 class PTXTargetLowering : public TargetLowering {
  33   public:
  34     explicit PTXTargetLowering(TargetMachine &TM);
  35
  36     virtual const char *getTargetNodeName(unsigned Opcode) const;
  37
  38     virtual unsigned getFunctionAlignment(const Function *F) const {
  39       return 2; }
  40
  41     virtual SDValue
  42       LowerFormalArguments(SDValue Chain,
  43                            CallingConv::ID CallConv,
  44                            bool isVarArg,
  45                            const SmallVectorImpl<ISD::InputArg> &Ins,
  46                            DebugLoc dl,
  47                            SelectionDAG &DAG,
  48                            SmallVectorImpl<SDValue> &InVals) const;
  49
  50     virtual SDValue
  51       LowerReturn(SDValue Chain,
  52                   CallingConv::ID CallConv,
  53                   bool isVarArg,
  54                   const SmallVectorImpl<ISD::OutputArg> &Outs,
  55                   const SmallVectorImpl<SDValue> &OutVals,
  56                   DebugLoc dl,
  57                   SelectionDAG &DAG) const;
  58 }; // class PTXTargetLowering
  59 } // namespace llvm
  60
  61 #endif // PTX_ISEL_LOWERING_H