1 //====-- PTXSubtarget.h - Define Subtarget for the PTX ---------*- C++ -*--===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file declares the PTX specific subclass of TargetSubtargetInfo.
12 //===----------------------------------------------------------------------===//
14 #ifndef PTX_SUBTARGET_H
15 #define PTX_SUBTARGET_H
17 #include "llvm/Target/TargetSubtargetInfo.h"
19 #define GET_SUBTARGETINFO_HEADER
20 #include "PTXGenSubtargetInfo.inc"
23 class PTXSubtarget : public PTXGenSubtargetInfo {
27 * Enumeration of Shader Models supported by the back-end.
30 PTX_COMPUTE_1_0, /*< Compute Compatibility 1.0 */
31 PTX_COMPUTE_1_1, /*< Compute Compatibility 1.1 */
32 PTX_COMPUTE_1_2, /*< Compute Compatibility 1.2 */
33 PTX_COMPUTE_1_3, /*< Compute Compatibility 1.3 */
34 PTX_COMPUTE_2_0, /*< Compute Compatibility 2.0 */
37 PTX_SM_1_0, /*< Shader Model 1.0 */
38 PTX_SM_1_1, /*< Shader Model 1.1 */
39 PTX_SM_1_2, /*< Shader Model 1.2 */
40 PTX_SM_1_3, /*< Shader Model 1.3 */
41 PTX_SM_2_0, /*< Shader Model 2.0 */
42 PTX_SM_2_1, /*< Shader Model 2.1 */
43 PTX_SM_2_2, /*< Shader Model 2.2 */
44 PTX_SM_2_3, /*< Shader Model 2.3 */
49 * Enumeration of PTX versions supported by the back-end.
51 * Currently, PTX 2.0 is the minimum supported version.
54 PTX_VERSION_2_0, /*< PTX Version 2.0 */
55 PTX_VERSION_2_1, /*< PTX Version 2.1 */
56 PTX_VERSION_2_2, /*< PTX Version 2.2 */
57 PTX_VERSION_2_3 /*< PTX Version 2.3 */
62 /// Shader Model supported on the target GPU.
63 PTXTargetEnum PTXTarget;
65 /// PTX Language Version.
66 PTXVersionEnum PTXVersion;
68 // The native .f64 type is supported on the hardware.
71 // Support the fused-multiply add (FMA) and multiply-add (MAD)
75 // Use .u64 instead of .u32 for addresses.
80 PTXSubtarget(const std::string &TT, const std::string &CPU,
81 const std::string &FS, bool is64Bit);
83 // Target architecture accessors
84 std::string getTargetString() const;
86 std::string getPTXVersionString() const;
88 bool supportsDouble() const { return SupportsDouble; }
90 bool is64Bit() const { return Is64Bit; }
92 bool supportsFMA() const { return SupportsFMA; }
94 bool supportsPTX21() const { return PTXVersion >= PTX_VERSION_2_1; }
96 bool supportsPTX22() const { return PTXVersion >= PTX_VERSION_2_2; }
98 bool supportsPTX23() const { return PTXVersion >= PTX_VERSION_2_3; }
100 bool fdivNeedsRoundingMode() const {
101 return (PTXTarget >= PTX_SM_1_3 && PTXTarget < PTX_LAST_SM) ||
102 (PTXTarget >= PTX_COMPUTE_1_3 && PTXTarget < PTX_LAST_COMPUTE);
105 bool fmadNeedsRoundingMode() const {
106 return (PTXTarget >= PTX_SM_1_3 && PTXTarget < PTX_LAST_SM) ||
107 (PTXTarget >= PTX_COMPUTE_1_3 && PTXTarget < PTX_LAST_COMPUTE);
110 bool useParamSpaceForDeviceArgs() const {
111 return (PTXTarget >= PTX_SM_2_0 && PTXTarget < PTX_LAST_SM) ||
112 (PTXTarget >= PTX_COMPUTE_2_0 && PTXTarget < PTX_LAST_COMPUTE);
115 void ParseSubtargetFeatures(const std::string &FS,
116 const std::string &CPU);
117 }; // class PTXSubtarget
120 #endif // PTX_SUBTARGET_H