blob: 32950edc9c7923941f47e11a68a4e9c64c5cbb72 (
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
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
|
#include "slang-ir-peephole.h"
#include "slang-ir-inst-pass-base.h"
namespace Slang
{
struct PeepholeContext : InstPassBase
{
PeepholeContext(IRModule* inModule)
: InstPassBase(inModule)
{}
bool changed = false;
void processInst(IRInst* inst)
{
switch (inst->getOp())
{
case kIROp_GetResultError:
if (inst->getOperand(0)->getOp() == kIROp_MakeResultError)
{
inst->replaceUsesWith(inst->getOperand(0)->getOperand(0));
changed = true;
}
break;
case kIROp_GetResultValue:
if (inst->getOperand(0)->getOp() == kIROp_MakeResultValue)
{
inst->replaceUsesWith(inst->getOperand(0)->getOperand(0));
inst->removeAndDeallocate();
changed = true;
}
break;
case kIROp_IsResultError:
if (inst->getOperand(0)->getOp() == kIROp_MakeResultError)
{
IRBuilder builder(&sharedBuilderStorage);
inst->replaceUsesWith(builder.getBoolValue(true));
inst->removeAndDeallocate();
changed = true;
}
else if (inst->getOperand(0)->getOp() == kIROp_MakeResultValue)
{
IRBuilder builder(&sharedBuilderStorage);
inst->replaceUsesWith(builder.getBoolValue(false));
inst->removeAndDeallocate();
changed = true;
}
break;
case kIROp_GetTupleElement:
if (inst->getOperand(0)->getOp() == kIROp_MakeTuple)
{
auto element = inst->getOperand(1);
if (auto intLit = as<IRIntLit>(element))
{
inst->replaceUsesWith(inst->getOperand(0)->getOperand((UInt)intLit->value.intVal));
inst->removeAndDeallocate();
changed = true;
}
}
break;
case kIROp_FieldExtract:
if (inst->getOperand(0)->getOp() == kIROp_makeStruct)
{
auto field = as<IRFieldExtract>(inst)->field.get();
Index fieldIndex = -1;
auto structType = as<IRStructType>(inst->getOperand(0)->getDataType());
if (structType)
{
Index i = 0;
for (auto sfield : structType->getFields())
{
if (sfield == field)
{
fieldIndex = i;
break;
}
i++;
}
if (fieldIndex != -1 && fieldIndex < (Index)inst->getOperand(0)->getOperandCount())
{
inst->replaceUsesWith(inst->getOperand(0)->getOperand((UInt)fieldIndex));
inst->removeAndDeallocate();
changed = true;
}
}
}
break;
case kIROp_CastPtrToBool:
{
auto ptr = inst->getOperand(0);
IRBuilder builder(&sharedBuilderStorage);
builder.setInsertBefore(inst);
auto neq = builder.emitNeq(ptr, builder.getNullVoidPtrValue());
inst->replaceUsesWith(neq);
inst->removeAndDeallocate();
changed = true;
}
break;
case kIROp_IsType:
{
auto isTypeInst = as<IRIsType>(inst);
auto actualType = isTypeInst->getValue()->getDataType();
if (isTypeEqual(actualType, (IRType*)isTypeInst->getTypeOperand()))
{
IRBuilder builder(&sharedBuilderStorage);
builder.setInsertBefore(inst);
auto trueVal = builder.getBoolValue(true);
inst->replaceUsesWith(trueVal);
inst->removeAndDeallocate();
changed = true;
}
}
break;
case kIROp_Reinterpret:
{
if (isTypeEqual(inst->getOperand(0)->getDataType(), inst->getDataType()))
{
inst->replaceUsesWith(inst->getOperand(0));
inst->removeAndDeallocate();
changed = true;
}
}
break;
case kIROp_UnpackAnyValue:
{
if (inst->getOperand(0)->getOp() == kIROp_PackAnyValue)
{
if (isTypeEqual(inst->getOperand(0)->getOperand(0)->getDataType(), inst->getDataType()))
{
inst->replaceUsesWith(inst->getOperand(0)->getOperand(0));
inst->removeAndDeallocate();
changed = true;
}
}
}
break;
case kIROp_PackAnyValue:
{
// Pack(obj: anyValueN) : anyValueN --> obj
if (isTypeEqual(inst->getOperand(0)->getDataType(), inst->getDataType()))
{
inst->replaceUsesWith(inst->getOperand(0));
inst->removeAndDeallocate();
changed = true;
}
}
break;
case kIROp_GetOptionalValue:
{
if (inst->getOperand(0)->getOp() == kIROp_MakeOptionalValue)
{
inst->replaceUsesWith(inst->getOperand(0)->getOperand(0));
inst->removeAndDeallocate();
changed = true;
}
}
break;
case kIROp_OptionalHasValue:
{
if (inst->getOperand(0)->getOp() == kIROp_MakeOptionalValue)
{
IRBuilder builder(&sharedBuilderStorage);
builder.setInsertBefore(inst);
auto trueVal = builder.getBoolValue(true);
inst->replaceUsesWith(trueVal);
inst->removeAndDeallocate();
changed = true;
}
else if (inst->getOperand(0)->getOp() == kIROp_MakeOptionalNone)
{
IRBuilder builder(&sharedBuilderStorage);
builder.setInsertBefore(inst);
auto falseVal = builder.getBoolValue(false);
inst->replaceUsesWith(falseVal);
inst->removeAndDeallocate();
changed = true;
}
}
break;
case kIROp_GetNativePtr:
{
if (inst->getOperand(0)->getOp() == kIROp_PtrLit)
{
inst->replaceUsesWith(inst->getOperand(0));
inst->removeAndDeallocate();
changed = true;
}
}
break;
case kIROp_MakeExistential:
{
if (inst->getOperand(0)->getOp() == kIROp_ExtractExistentialValue)
{
inst->replaceUsesWith(inst->getOperand(0)->getOperand(0));
inst->removeAndDeallocate();
changed = true;
}
}
break;
default:
break;
}
}
bool processModule()
{
SharedIRBuilder* sharedBuilder = &sharedBuilderStorage;
sharedBuilder->init(module);
sharedBuilderStorage.deduplicateAndRebuildGlobalNumberingMap();
changed = false;
processAllInsts([this](IRInst* inst) { processInst(inst); });
return changed;
}
};
bool peepholeOptimize(IRModule* module)
{
PeepholeContext context = PeepholeContext(module);
return context.processModule();
}
} // namespace Slang
|
