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
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
// SPDX-License-Identifier: GPL-3.0-or-later
#include "TableGenBackends.h"
#include <cstddef>
#include <cstdint>
#include <ostream>
#include <sstream>
#include <string>
#include <string_view>
namespace rcc::targetgen {
namespace {
[[nodiscard]] std::string_view typeKindName(NormalizedSelectionTypeKind Kind) noexcept {
switch (Kind) {
case NormalizedSelectionTypeKind::Any:
return "Any";
case NormalizedSelectionTypeKind::Scalar:
return "Scalar";
case NormalizedSelectionTypeKind::Pointer:
return "Pointer";
}
return "Any";
}
void emitInstruction(std::ostream &Output, std::string_view Opcode, std::uint32_t OperandIndex,
std::uint32_t Value = 0, std::string_view Auxiliary = "0",
std::int64_t Immediate = 0, std::string_view Symbol = {}) {
Output << " {GIMatchTableOpcode::" << Opcode << ", " << OperandIndex << ", " << Value << ", "
<< Auxiliary << ", " << Immediate << ", ";
appendQuoted(Output, Symbol);
Output << "},\n";
}
void emitTypePredicate(std::ostream &Output, std::uint32_t OperandIndex,
const NormalizedSelectionTypePredicate &Predicate) {
emitInstruction(Output, "CheckOperandType", OperandIndex, Predicate.Bits,
"static_cast<std::uint32_t>(GIMatchTypeKind::" +
std::string(typeKindName(Predicate.Kind)) + ")");
}
[[nodiscard]] std::size_t instructionCount(const NormalizedSelectionRule &Rule) noexcept {
std::size_t Count = 2U + (Rule.ResultType ? 1U : 0U) + (Rule.IntegerPredicate ? 1U : 0U) +
(Rule.FloatingPredicate ? 1U : 0U) + (Rule.MemoryPredicate ? 1U : 0U) +
Rule.TargetPredicates.size() + Rule.OperandTypes.size() +
Rule.OperandBanks.size() + Rule.OperandClasses.size() +
Rule.OperandImmediates.size() + Rule.OperandDefConstants.size() +
Rule.Temporaries.size() + Rule.EraseOperandDefinitions.size();
for (const NormalizedSelectionDefUsePredicate &Predicate : Rule.DefUsePredicates)
Count += 1U + static_cast<std::size_t>(Predicate.IntegerPredicate.has_value()) +
Predicate.Captures.size() + Predicate.OperandDefConstants.size();
for (const NormalizedSelectionAction &Action : Rule.Actions)
Count += 1U + Action.OperandRenderers.size();
return Count;
}
} // namespace
std::string emitGlobalISel(const NormalizedTargetModel &Model, std::string_view SourceName) {
std::size_t InstructionCount = 0;
std::size_t ConstantRangeCount = 0;
for (const NormalizedSelectionRule &Rule : Model.SelectionRules)
InstructionCount += instructionCount(Rule);
for (const NormalizedSelectionRule &Rule : Model.SelectionRules) {
for (const NormalizedSelectionOperandImmediatePredicate &Predicate : Rule.OperandImmediates) {
ConstantRangeCount += Predicate.Ranges.size();
}
for (const NormalizedSelectionOperandDefConstantPredicate &Predicate :
Rule.OperandDefConstants) {
ConstantRangeCount += Predicate.Ranges.size();
}
for (const NormalizedSelectionDefUsePredicate &DefUse : Rule.DefUsePredicates) {
for (const NormalizedSelectionOperandDefConstantPredicate &Predicate :
DefUse.OperandDefConstants) {
ConstantRangeCount += Predicate.Ranges.size();
}
}
}
std::ostringstream Output;
Output << "// SPDX-License-Identifier: GPL-3.0-or-later\n\n";
Output << "// This file is generated by rcc-tblgen from ";
appendQuoted(Output, SourceName);
Output << ". Do not edit it manually.\n\n";
Output << "#ifdef GET_GLOBALISEL_MATCH_TABLE\n\n";
Output << "constexpr std::array<GIMatchTableConstantRange, " << ConstantRangeCount
<< "> GeneratedGlobalISelConstantRanges = {{\n";
for (const NormalizedSelectionRule &Rule : Model.SelectionRules) {
for (const NormalizedSelectionOperandImmediatePredicate &Predicate : Rule.OperandImmediates) {
for (const NormalizedSelectionConstantRange &Range : Predicate.Ranges)
Output << " {" << Range.Minimum << ", " << Range.Maximum << "},\n";
}
for (const NormalizedSelectionOperandDefConstantPredicate &Predicate :
Rule.OperandDefConstants) {
for (const NormalizedSelectionConstantRange &Range : Predicate.Ranges)
Output << " {" << Range.Minimum << ", " << Range.Maximum << "},\n";
}
for (const NormalizedSelectionDefUsePredicate &DefUse : Rule.DefUsePredicates) {
for (const NormalizedSelectionOperandDefConstantPredicate &Predicate :
DefUse.OperandDefConstants) {
for (const NormalizedSelectionConstantRange &Range : Predicate.Ranges)
Output << " {" << Range.Minimum << ", " << Range.Maximum << "},\n";
}
}
}
Output << "}};\n\n";
Output << "constexpr std::array<GIMatchTableInstruction, " << InstructionCount
<< "> GeneratedGlobalISelInstructions = {{\n";
std::size_t FirstConstantRange = 0;
for (const NormalizedSelectionRule &Rule : Model.SelectionRules) {
emitInstruction(Output, "CheckOpcode", 0, Rule.MatchOpcode);
if (Rule.ResultType)
emitTypePredicate(Output, 0, *Rule.ResultType);
if (Rule.IntegerPredicate)
emitInstruction(Output, "CheckIntegerPredicate", Rule.IntegerPredicate->OperandIndex,
Rule.IntegerPredicate->Predicate);
if (Rule.FloatingPredicate)
emitInstruction(Output, "CheckFloatingPredicate", Rule.FloatingPredicate->OperandIndex,
Rule.FloatingPredicate->Predicate);
if (Rule.MemoryPredicate)
emitInstruction(Output, "CheckMemorySize", Rule.MemoryPredicate->MemoryOperandIndex,
Rule.MemoryPredicate->Bytes);
for (const std::string &Predicate : Rule.TargetPredicates)
emitInstruction(Output, "CheckTargetPredicate", 0, 0, "0", 0, Predicate);
for (const NormalizedSelectionOperandTypePredicate &Predicate : Rule.OperandTypes)
emitTypePredicate(Output, Predicate.OperandIndex, Predicate.Type);
for (const NormalizedSelectionOperandBankPredicate &Predicate : Rule.OperandBanks)
emitInstruction(Output, "CheckOperandBank", Predicate.OperandIndex, Predicate.Bank);
for (const NormalizedSelectionOperandClassPredicate &Predicate : Rule.OperandClasses)
emitInstruction(Output, "CheckOperandClass", Predicate.OperandIndex, Predicate.RegClass);
for (const NormalizedSelectionOperandImmediatePredicate &Predicate : Rule.OperandImmediates) {
emitInstruction(Output, "CheckOperandImmediateRanges", Predicate.OperandIndex,
static_cast<std::uint32_t>(FirstConstantRange),
std::to_string(Predicate.Ranges.size()));
FirstConstantRange += Predicate.Ranges.size();
}
for (const NormalizedSelectionOperandDefConstantPredicate &Predicate :
Rule.OperandDefConstants) {
emitInstruction(Output, "CheckOperandDefConstantRanges", Predicate.OperandIndex,
static_cast<std::uint32_t>(FirstConstantRange),
std::to_string(Predicate.Ranges.size()));
FirstConstantRange += Predicate.Ranges.size();
}
for (const NormalizedSelectionDefUsePredicate &DefUse : Rule.DefUsePredicates) {
emitInstruction(Output, "CheckOperandDefOpcode", DefUse.RootOperandIndex, DefUse.Opcode);
if (DefUse.IntegerPredicate) {
emitInstruction(Output, "CheckOperandDefIntegerPredicate", DefUse.RootOperandIndex,
DefUse.IntegerPredicate->Predicate,
std::to_string(DefUse.IntegerPredicate->OperandIndex));
}
for (const NormalizedSelectionOperandDefConstantPredicate &Predicate :
DefUse.OperandDefConstants) {
emitInstruction(Output, "CheckOperandDefOperandConstantRanges", DefUse.RootOperandIndex,
static_cast<std::uint32_t>(FirstConstantRange),
std::to_string(Predicate.OperandIndex),
static_cast<std::int64_t>(Predicate.Ranges.size()));
FirstConstantRange += Predicate.Ranges.size();
}
for (const NormalizedSelectionDefUseCapture &Capture : DefUse.Captures)
emitInstruction(Output, "CaptureDefOperand", DefUse.RootOperandIndex, Capture.ID,
std::to_string(Capture.OperandIndex));
}
for (const NormalizedSelectionTemporary &Temporary : Rule.Temporaries)
emitInstruction(Output, "CreateTemporary", Temporary.TypeFromOperand, Temporary.ID);
for (const NormalizedSelectionAction &Action : Rule.Actions) {
emitInstruction(Output, Action.ReplacesRoot ? "MutateOpcode" : "BuildInstruction", 0,
Action.ResultOpcode);
for (const NormalizedSelectionOperandRenderer &Renderer : Action.OperandRenderers) {
switch (Renderer.SourceKind) {
case NormalizedSelectionOperandRenderer::Kind::Operand:
emitInstruction(Output, "RenderOperand", Renderer.Value);
break;
case NormalizedSelectionOperandRenderer::Kind::ComplexOperand:
emitInstruction(Output, "RenderComplexOperand", Renderer.Value, 0, "0", 0,
Renderer.ComplexRenderer);
break;
case NormalizedSelectionOperandRenderer::Kind::PhysicalRegister:
emitInstruction(Output, "RenderPhysicalRegister", 0, Renderer.Value,
std::to_string(Renderer.Flags));
break;
case NormalizedSelectionOperandRenderer::Kind::Temporary:
emitInstruction(Output, "RenderTemporary", 0, Renderer.Value,
std::to_string(Renderer.Flags));
break;
case NormalizedSelectionOperandRenderer::Kind::CapturedOperand:
emitInstruction(Output, "RenderCapturedOperand", 0, Renderer.Value);
break;
case NormalizedSelectionOperandRenderer::Kind::CapturedImmediate:
emitInstruction(Output, "RenderCapturedImmediate", Renderer.Value,
static_cast<std::uint32_t>(Renderer.Transform));
break;
case NormalizedSelectionOperandRenderer::Kind::Immediate:
emitInstruction(Output, "RenderImmediate", 0, 0, "0", Renderer.Immediate);
break;
}
}
}
for (const std::uint32_t OperandIndex : Rule.EraseOperandDefinitions)
emitInstruction(Output, "EraseOperandDefinition", OperandIndex);
emitInstruction(Output, "Complete", 0);
}
Output << "}};\n\n";
Output << "constexpr std::array<GIMatchTableRule, " << Model.SelectionRules.size()
<< "> GeneratedGlobalISelRules = {{\n";
std::size_t FirstInstruction = 0;
for (const NormalizedSelectionRule &Rule : Model.SelectionRules) {
const std::size_t Count = instructionCount(Rule);
Output << " {";
appendQuoted(Output, Rule.Symbol);
Output << ", " << Rule.Priority << ", " << FirstInstruction << ", " << Count << "},\n";
FirstInstruction += Count;
}
Output << "}};\n\n";
Output << "[[nodiscard]] constexpr GIMatchTable generatedGlobalISelMatchTable() noexcept {\n"
" return {GeneratedGlobalISelInstructions, GeneratedGlobalISelRules,\n"
" GeneratedGlobalISelConstantRanges};\n"
"}\n\n";
Output << "#endif // GET_GLOBALISEL_MATCH_TABLE\n";
return Output.str();
}
} // namespace rcc::targetgen
|
