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
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
//===- SPIRVMDWalker.h - SPIR-V metadata walker header file ----*- C++ -*-===//
//
// The LLVM/SPIRV Translator
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
// Copyright (c) 2014 Advanced Micro Devices, Inc. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal with the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimers.
// Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimers in the documentation
// and/or other materials provided with the distribution.
// Neither the names of Advanced Micro Devices, Inc., nor the names of its
// contributors may be used to endorse or promote products derived from this
// Software without specific prior written permission.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH
// THE SOFTWARE.
//
//===----------------------------------------------------------------------===//
/// \file
///
/// This file declares classes for walking SPIR-V metadata.
///
//===----------------------------------------------------------------------===//
#ifndef SPIRV_SPIRVMDWALKER_H
#define SPIRV_SPIRVMDWALKER_H
#include "SPIRVInternal.h"
#include "llvm/IR/Metadata.h"
#include <functional>
using namespace llvm;
namespace SPIRV {
class SPIRVMDWalker {
public:
template <typename ParentT> struct MDWrapper;
struct NamedMDWrapper {
NamedMDWrapper(NamedMDNode *Named, SPIRVMDWalker &WW)
: NMD(Named), W(WW), I(0), Q(true) {
E = Named ? Named->getNumOperands() : 0;
}
operator bool() const { return NMD; }
bool atEnd() const { return !(NMD && I < E); }
MDWrapper<NamedMDWrapper> nextOp() {
if (!Q)
assert(I < E && "out of bound");
return MDWrapper<NamedMDWrapper>(
(NMD && I < E) ? NMD->getOperand(I++) : nullptr, *this, W);
}
NamedMDWrapper &setQuiet(bool Quiet) {
Q = Quiet;
return *this;
}
NamedMDNode *NMD;
SPIRVMDWalker &W;
unsigned I;
unsigned E;
bool Q; // Quiet
};
template <typename ParentT> struct MDWrapper {
MDWrapper(MDNode *Node, ParentT &Parent, SPIRVMDWalker &Walker)
: M(Node), P(Parent), W(Walker), I(0), Q(false) {
E = Node ? Node->getNumOperands() : 0;
}
operator bool() const { return M; }
bool atEnd() const { return !(M && I < E); }
template <typename T> MDWrapper &get(T &V) {
if (!Q)
assert(I < E && "out of bound");
if (atEnd())
return *this;
V = mdconst::dyn_extract<ConstantInt>(M->getOperand(I++))->getZExtValue();
return *this;
}
MDWrapper &get(std::string &S) {
if (!Q)
assert(I < E && "out of bound");
if (atEnd())
return *this;
Metadata *Op = M->getOperand(I++);
if (!Op)
S = "";
else if (auto Str = dyn_cast<MDString>(Op))
S = Str->getString().str();
else
S = "";
return *this;
}
MDWrapper &get(Function *&F) {
if (!Q)
assert(I < E && "out of bound");
if (atEnd())
return *this;
F = mdconst::dyn_extract<Function>(M->getOperand(I++));
return *this;
}
MDWrapper &get(SmallVectorImpl<std::string> &SV) {
if (atEnd())
return *this;
while (I < E) {
std::string S;
get(S);
SV.push_back(S);
}
return *this;
}
MDWrapper<MDWrapper> nextOp() {
if (!Q)
assert(I < E && "out of bound");
return MDWrapper<MDWrapper>(
(M && I < E) ? dyn_cast<MDNode>(M->getOperand(I++)) : nullptr, *this,
W);
}
ParentT &done() { return P; }
MDWrapper &setQuiet(bool Quiet) {
Q = Quiet;
return *this;
}
MDNode *M;
ParentT &P;
SPIRVMDWalker &W;
SmallVector<Metadata *, 10> V;
unsigned I;
unsigned E;
bool Q; // Quiet
};
explicit SPIRVMDWalker(Module &Mod) : M(Mod), C(Mod.getContext()) {}
NamedMDWrapper getNamedMD(StringRef Name) {
return NamedMDWrapper(M.getNamedMetadata(Name), *this);
}
friend struct NamedMDWrapper;
private:
Module &M;
LLVMContext &C;
};
} /* namespace SPIRV */
#endif // SPIRV_SPIRVMDWALKER_H
|
