1//===-- R600RegisterInfo.h - R600 Register Info 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// Interface definition for R600RegisterInfo
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef R600REGISTERINFO_H_
15#define R600REGISTERINFO_H_
16
17#include "AMDGPUTargetMachine.h"
18#include "AMDGPURegisterInfo.h"
19
20namespace llvm {
21
22class R600TargetMachine;
23class TargetInstrInfo;
24
25struct R600RegisterInfo : public AMDGPURegisterInfo
26{
27  AMDGPUTargetMachine &TM;
28  const TargetInstrInfo &TII;
29
30  R600RegisterInfo(AMDGPUTargetMachine &tm, const TargetInstrInfo &tii);
31
32  virtual BitVector getReservedRegs(const MachineFunction &MF) const;
33
34  /// getISARegClass - rc is an AMDIL reg class.  This function returns the
35  /// R600 reg class that is equivalent to the given AMDIL reg class.
36  virtual const TargetRegisterClass * getISARegClass(
37    const TargetRegisterClass * rc) const;
38
39  /// getHWRegIndex - get the HW encoding for a register.
40  unsigned getHWRegIndex(unsigned reg) const;
41
42  /// getHWRegChan - get the HW encoding for a register's channel.
43  unsigned getHWRegChan(unsigned reg) const;
44
45  /// getCFGStructurizerRegClass - get the register class of the specified
46  /// type to use in the CFGStructurizer
47  virtual const TargetRegisterClass * getCFGStructurizerRegClass(MVT VT) const;
48
49  /// getSubRegFromChannel - Return the sub reg enum value for the given
50  /// Channel (e.g. getSubRegFromChannel(0) -> AMDGPU::sel_x)
51  unsigned getSubRegFromChannel(unsigned Channel) const;
52
53private:
54  /// getHWRegIndexGen - Generated function returns a register's encoding
55  unsigned getHWRegIndexGen(unsigned reg) const;
56  /// getHWRegChanGen - Generated function returns a register's channel
57  /// encoding.
58  unsigned getHWRegChanGen(unsigned reg) const;
59};
60
61} // End namespace llvm
62
63#endif // AMDIDSAREGISTERINFO_H_
64