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1 //===-- R600ISelLowering.h - R600 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 // R600 DAG Lowering interface definition
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef R600ISELLOWERING_H
15 #define R600ISELLOWERING_H
16 
17 #include "AMDGPUISelLowering.h"
18 
19 namespace llvm {
20 
21 class R600InstrInfo;
22 
23 class R600TargetLowering : public AMDGPUTargetLowering
24 {
25 public:
26   R600TargetLowering(TargetMachine &TM);
27   virtual MachineBasicBlock * EmitInstrWithCustomInserter(MachineInstr *MI,
28       MachineBasicBlock * BB) const;
29   virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const;
30 
31 private:
32   const R600InstrInfo * TII;
33 
34   /// lowerImplicitParameter - Each OpenCL kernel has nine implicit parameters
35   /// that are stored in the first nine dwords of a Vertex Buffer.  These
36   /// implicit parameters are lowered to load instructions which retreive the
37   /// values from the Vertex Buffer.
38   SDValue LowerImplicitParameter(SelectionDAG &DAG, EVT VT,
39                                  DebugLoc DL, unsigned DwordOffset) const;
40 
41   void lowerImplicitParameter(MachineInstr *MI, MachineBasicBlock &BB,
42       MachineRegisterInfo & MRI, unsigned dword_offset) const;
43 
44   SDValue LowerBR_CC(SDValue Op, SelectionDAG &DAG) const;
45 
46   /// LowerROTL - Lower ROTL opcode to BITALIGN
47   SDValue LowerROTL(SDValue Op, SelectionDAG &DAG) const;
48 
49   SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG) const;
50   SDValue LowerSETCC(SDValue Op, SelectionDAG &DAG) const;
51 
52 };
53 
54 } // End namespace llvm;
55 
56 #endif // R600ISELLOWERING_H
57