R600ISelLowering.h revision 47d1b0a80990dda4e14073f667f0c2b939dfb925 
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
19namespace llvm {
20
21class R600InstrInfo;
22
23class R600TargetLowering : public AMDGPUTargetLowering
24{
25public:
26  R600TargetLowering(TargetMachine &TM);
27  virtual MachineBasicBlock * EmitInstrWithCustomInserter(MachineInstr *MI,
28      MachineBasicBlock * BB) const;
29  virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const;
30
31private:
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 represented by pseudo instructions, which are
37  /// lowered to VTX_READ instructions by this function.
38  void lowerImplicitParameter(MachineInstr *MI, MachineBasicBlock &BB,
39      MachineRegisterInfo & MRI, unsigned dword_offset) const;
40
41  /// LowerROTL - Lower ROTL opcode to BITALIGN
42  SDValue LowerROTL(SDValue Op, SelectionDAG &DAG) const;
43
44  SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG) const;
45
46};
47
48} // End namespace llvm;
49
50#endif // R600ISELLOWERING_H
51