AMDGPUSubtarget.h revision dce4a407a24b04eebc6a376f8e62b41aaa7b071f 
1//=====-- AMDGPUSubtarget.h - Define Subtarget for the AMDIL ---*- 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/// \file
11/// \brief AMDGPU specific subclass of TargetSubtarget.
12//
13//===----------------------------------------------------------------------===//
14
15#ifndef AMDGPUSUBTARGET_H
16#define AMDGPUSUBTARGET_H
17#include "AMDGPU.h"
18#include "llvm/ADT/StringExtras.h"
19#include "llvm/ADT/StringRef.h"
20#include "llvm/Target/TargetSubtargetInfo.h"
21
22#define GET_SUBTARGETINFO_HEADER
23#include "AMDGPUGenSubtargetInfo.inc"
24
25#define MAX_CB_SIZE (1 << 16)
26
27namespace llvm {
28
29class AMDGPUSubtarget : public AMDGPUGenSubtargetInfo {
30public:
31  enum Generation {
32    R600 = 0,
33    R700,
34    EVERGREEN,
35    NORTHERN_ISLANDS,
36    SOUTHERN_ISLANDS,
37    SEA_ISLANDS
38  };
39
40private:
41  std::string DevName;
42  bool Is64bit;
43  bool Is32on64bit;
44  bool DumpCode;
45  bool R600ALUInst;
46  bool HasVertexCache;
47  short TexVTXClauseSize;
48  enum Generation Gen;
49  bool FP64;
50  bool CaymanISA;
51  bool EnableIRStructurizer;
52  bool EnableIfCvt;
53  unsigned WavefrontSize;
54  bool CFALUBug;
55
56  InstrItineraryData InstrItins;
57
58public:
59  AMDGPUSubtarget(StringRef TT, StringRef CPU, StringRef FS);
60
61  const InstrItineraryData &getInstrItineraryData() const { return InstrItins; }
62  void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
63
64  bool is64bit() const;
65  bool hasVertexCache() const;
66  short getTexVTXClauseSize() const;
67  enum Generation getGeneration() const;
68  bool hasHWFP64() const;
69  bool hasCaymanISA() const;
70
71  bool hasBFE() const {
72    return (getGeneration() >= EVERGREEN);
73  }
74
75  bool hasBFM() const {
76    return hasBFE();
77  }
78
79  bool hasMulU24() const {
80    return (getGeneration() >= EVERGREEN);
81  }
82
83  bool hasMulI24() const {
84    return (getGeneration() >= SOUTHERN_ISLANDS ||
85            hasCaymanISA());
86  }
87
88  bool IsIRStructurizerEnabled() const;
89  bool isIfCvtEnabled() const;
90  unsigned getWavefrontSize() const;
91  unsigned getStackEntrySize() const;
92  bool hasCFAluBug() const;
93
94  bool enableMachineScheduler() const override {
95    return getGeneration() <= NORTHERN_ISLANDS;
96  }
97
98  // Helper functions to simplify if statements
99  bool isTargetELF() const;
100  std::string getDeviceName() const;
101  bool dumpCode() const { return DumpCode; }
102  bool r600ALUEncoding() const { return R600ALUInst; }
103
104};
105
106} // End namespace llvm
107
108#endif // AMDGPUSUBTARGET_H
109