blob: 158925c2fc59b04096a3dfdde241135af7d9e42d (
plain)
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
|
//===---- AMDILDevice.h - Define Device Data for AMDIL -----*- C++ -*------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//==-----------------------------------------------------------------------===//
//
// Interface for the subtarget data classes.
//
//===----------------------------------------------------------------------===//
// This file will define the interface that each generation needs to
// implement in order to correctly answer queries on the capabilities of the
// specific hardware.
//===----------------------------------------------------------------------===//
#ifndef _AMDILDEVICEIMPL_H_
#define _AMDILDEVICEIMPL_H_
#include "AMDIL.h"
#include "llvm/ADT/BitVector.h"
namespace llvm {
class AMDGPUSubtarget;
class AMDILAsmPrinter;
class AMDILPointerManager;
class AsmPrinter;
class MCStreamer;
//===----------------------------------------------------------------------===//
// Interface for data that is specific to a single device
//===----------------------------------------------------------------------===//
class AMDILDevice {
public:
AMDILDevice(AMDGPUSubtarget *ST);
virtual ~AMDILDevice();
// Enum values for the various memory types.
enum {
RAW_UAV_ID = 0,
ARENA_UAV_ID = 1,
LDS_ID = 2,
GDS_ID = 3,
SCRATCH_ID = 4,
CONSTANT_ID = 5,
GLOBAL_ID = 6,
MAX_IDS = 7
} IO_TYPE_IDS;
// Returns the max LDS size that the hardware supports. Size is in
// bytes.
virtual size_t getMaxLDSSize() const = 0;
// Returns the max GDS size that the hardware supports if the GDS is
// supported by the hardware. Size is in bytes.
virtual size_t getMaxGDSSize() const;
// Returns the max number of hardware constant address spaces that
// are supported by this device.
virtual size_t getMaxNumCBs() const;
// Returns the max number of bytes a single hardware constant buffer
// can support. Size is in bytes.
virtual size_t getMaxCBSize() const;
// Returns the max number of bytes allowed by the hardware scratch
// buffer. Size is in bytes.
virtual size_t getMaxScratchSize() const;
// Get the flag that corresponds to the device.
virtual uint32_t getDeviceFlag() const;
// Returns the number of work-items that exist in a single hardware
// wavefront.
virtual size_t getWavefrontSize() const = 0;
// Get the generational name of this specific device.
virtual uint32_t getGeneration() const = 0;
// Get the stack alignment of this specific device.
virtual uint32_t getStackAlignment() const;
// Get the resource ID for this specific device.
virtual uint32_t getResourceID(uint32_t DeviceID) const = 0;
// Get the max number of UAV's for this device.
virtual uint32_t getMaxNumUAVs() const = 0;
// Interface to get the Asm printer for each device.
virtual AsmPrinter*
getAsmPrinter(TargetMachine& TM, MCStreamer &Streamer) const = 0;
// API utilizing more detailed capabilities of each family of
// cards. If a capability is supported, then either usesHardware or
// usesSoftware returned true. If usesHardware returned true, then
// usesSoftware must return false for the same capability. Hardware
// execution means that the feature is done natively by the hardware
// and is not emulated by the softare. Software execution means
// that the feature could be done in the hardware, but there is
// software that emulates it with possibly using the hardware for
// support since the hardware does not fully comply with OpenCL
// specs.
bool isSupported(AMDILDeviceInfo::Caps Mode) const;
bool usesHardware(AMDILDeviceInfo::Caps Mode) const;
bool usesSoftware(AMDILDeviceInfo::Caps Mode) const;
virtual std::string getDataLayout() const;
static const unsigned int MAX_LDS_SIZE_700 = 16384;
static const unsigned int MAX_LDS_SIZE_800 = 32768;
static const unsigned int WavefrontSize = 64;
static const unsigned int HalfWavefrontSize = 32;
static const unsigned int QuarterWavefrontSize = 16;
protected:
virtual void setCaps();
llvm::BitVector mHWBits;
llvm::BitVector mSWBits;
AMDGPUSubtarget *mSTM;
uint32_t mDeviceFlag;
private:
AMDILDeviceInfo::ExecutionMode
getExecutionMode(AMDILDeviceInfo::Caps Caps) const;
}; // AMDILDevice
} // namespace llvm
#endif // _AMDILDEVICEIMPL_H_
|
