1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
//====-- PTXSubtarget.h - Define Subtarget for the PTX ---------*- C++ -*--===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file declares the PTX specific subclass of TargetSubtargetInfo.
//
//===----------------------------------------------------------------------===//
#ifndef PTX_SUBTARGET_H
#define PTX_SUBTARGET_H
#include "llvm/Target/TargetSubtargetInfo.h"
#define GET_SUBTARGETINFO_HEADER
#include "PTXGenSubtargetInfo.inc"
namespace llvm {
class StringRef;
class PTXSubtarget : public PTXGenSubtargetInfo {
public:
/**
* Enumeration of Shader Models supported by the back-end.
*/
enum PTXTargetEnum {
PTX_COMPUTE_1_0, /*< Compute Compatibility 1.0 */
PTX_COMPUTE_1_1, /*< Compute Compatibility 1.1 */
PTX_COMPUTE_1_2, /*< Compute Compatibility 1.2 */
PTX_COMPUTE_1_3, /*< Compute Compatibility 1.3 */
PTX_COMPUTE_2_0, /*< Compute Compatibility 2.0 */
PTX_LAST_COMPUTE,
PTX_SM_1_0, /*< Shader Model 1.0 */
PTX_SM_1_1, /*< Shader Model 1.1 */
PTX_SM_1_2, /*< Shader Model 1.2 */
PTX_SM_1_3, /*< Shader Model 1.3 */
PTX_SM_2_0, /*< Shader Model 2.0 */
PTX_SM_2_1, /*< Shader Model 2.1 */
PTX_SM_2_2, /*< Shader Model 2.2 */
PTX_SM_2_3, /*< Shader Model 2.3 */
PTX_LAST_SM
};
/**
* Enumeration of PTX versions supported by the back-end.
*
* Currently, PTX 2.0 is the minimum supported version.
*/
enum PTXVersionEnum {
PTX_VERSION_2_0, /*< PTX Version 2.0 */
PTX_VERSION_2_1, /*< PTX Version 2.1 */
PTX_VERSION_2_2, /*< PTX Version 2.2 */
PTX_VERSION_2_3 /*< PTX Version 2.3 */
};
private:
/// Shader Model supported on the target GPU.
PTXTargetEnum PTXTarget;
/// PTX Language Version.
PTXVersionEnum PTXVersion;
// The native .f64 type is supported on the hardware.
bool SupportsDouble;
// Support the fused-multiply add (FMA) and multiply-add (MAD)
// instructions
bool SupportsFMA;
// Use .u64 instead of .u32 for addresses.
bool Is64Bit;
public:
PTXSubtarget(const std::string &TT, const std::string &CPU,
const std::string &FS, bool is64Bit);
// Target architecture accessors
std::string getTargetString() const;
std::string getPTXVersionString() const;
bool supportsDouble() const { return SupportsDouble; }
bool is64Bit() const { return Is64Bit; }
bool supportsFMA() const { return SupportsFMA; }
bool supportsPTX21() const { return PTXVersion >= PTX_VERSION_2_1; }
bool supportsPTX22() const { return PTXVersion >= PTX_VERSION_2_2; }
bool supportsPTX23() const { return PTXVersion >= PTX_VERSION_2_3; }
bool fdivNeedsRoundingMode() const {
return (PTXTarget >= PTX_SM_1_3 && PTXTarget < PTX_LAST_SM) ||
(PTXTarget >= PTX_COMPUTE_1_3 && PTXTarget < PTX_LAST_COMPUTE);
}
bool fmadNeedsRoundingMode() const {
return (PTXTarget >= PTX_SM_1_3 && PTXTarget < PTX_LAST_SM) ||
(PTXTarget >= PTX_COMPUTE_1_3 && PTXTarget < PTX_LAST_COMPUTE);
}
bool useParamSpaceForDeviceArgs() const {
return (PTXTarget >= PTX_SM_2_0 && PTXTarget < PTX_LAST_SM) ||
(PTXTarget >= PTX_COMPUTE_2_0 && PTXTarget < PTX_LAST_COMPUTE);
}
bool callsAreHandled() const {
return (PTXTarget >= PTX_SM_2_0 && PTXTarget < PTX_LAST_SM) ||
(PTXTarget >= PTX_COMPUTE_2_0 && PTXTarget < PTX_LAST_COMPUTE);
}
bool emitPtrAttribute() const {
return PTXVersion >= PTX_VERSION_2_2;
}
void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
}; // class PTXSubtarget
} // namespace llvm
#endif // PTX_SUBTARGET_H
|
