SIProgramInfo.h revision 336809 
1//===--- SIProgramInfo.h ----------------------------------------*- 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/// Defines struct to track resource usage for kernels and entry functions.
12///
13//
14//===----------------------------------------------------------------------===//
15
16#ifndef LLVM_LIB_TARGET_AMDGPU_SIPROGRAMINFO_H
17#define LLVM_LIB_TARGET_AMDGPU_SIPROGRAMINFO_H
18
19namespace llvm {
20
21/// Track resource usage for kernels / entry functions.
22struct SIProgramInfo {
23    // Fields set in PGM_RSRC1 pm4 packet.
24    uint32_t VGPRBlocks = 0;
25    uint32_t SGPRBlocks = 0;
26    uint32_t Priority = 0;
27    uint32_t FloatMode = 0;
28    uint32_t Priv = 0;
29    uint32_t DX10Clamp = 0;
30    uint32_t DebugMode = 0;
31    uint32_t IEEEMode = 0;
32    uint64_t ScratchSize = 0;
33
34    uint64_t ComputePGMRSrc1 = 0;
35
36    // Fields set in PGM_RSRC2 pm4 packet.
37    uint32_t LDSBlocks = 0;
38    uint32_t ScratchBlocks = 0;
39
40    uint64_t ComputePGMRSrc2 = 0;
41
42    uint32_t NumVGPR = 0;
43    uint32_t NumSGPR = 0;
44    uint32_t LDSSize = 0;
45    bool FlatUsed = false;
46
47    // Number of SGPRs that meets number of waves per execution unit request.
48    uint32_t NumSGPRsForWavesPerEU = 0;
49
50    // Number of VGPRs that meets number of waves per execution unit request.
51    uint32_t NumVGPRsForWavesPerEU = 0;
52
53    // Fixed SGPR number used to hold wave scratch offset for entire kernel
54    // execution, or std::numeric_limits<uint16_t>::max() if the register is not
55    // used or not known.
56    uint16_t DebuggerWavefrontPrivateSegmentOffsetSGPR =
57        std::numeric_limits<uint16_t>::max();
58
59    // Fixed SGPR number of the first 4 SGPRs used to hold scratch V# for entire
60    // kernel execution, or std::numeric_limits<uint16_t>::max() if the register
61    // is not used or not known.
62    uint16_t DebuggerPrivateSegmentBufferSGPR =
63        std::numeric_limits<uint16_t>::max();
64
65    // Whether there is recursion, dynamic allocas, indirect calls or some other
66    // reason there may be statically unknown stack usage.
67    bool DynamicCallStack = false;
68
69    // Bonus information for debugging.
70    bool VCCUsed = false;
71
72    SIProgramInfo() = default;
73};
74
75} // namespace llvm
76
77#endif // LLVM_LIB_TARGET_AMDGPU_SIPROGRAMINFO_H
78