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//====-- 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 {
virtual void anchor();
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
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