GCC Code Coverage Report

Directory: ../
File: src/irgenerator/GenValues.cpp
Date: 2025-11-04 23:06:20
Coverage Exec Excl Total
Lines: 96.0% 555 1 579
Functions: 100.0% 13 0 13
Branches: 56.2% 706 4 1260
Line Branch Exec Source
1 // Copyright (c) 2021-2025 ChilliBits. All rights reserved.
2
3 #include "IRGenerator.h"
4
5 #include <ast/ASTNodes.h>
6 #include <driver/Driver.h>
7 #include <irgenerator/NameMangling.h>
8 #include <symboltablebuilder/SymbolTableBuilder.h>
9
10 #include <llvm/IR/Module.h>
11
12 namespace spice::compiler {
13
14 16352 std::any IRGenerator::visitValue(const ValueNode *node) {
15 16352 diGenerator.setSourceLocation(node);
16
17 // Function call
18
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 16352 if (node->fctCall)
19 14497 return visit(node->fctCall);
20
21 // Array initialization
22
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 1855 if (node->arrayInitialization)
23 54 return visit(node->arrayInitialization);
24
25 // Struct instantiation
26
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 1801 if (node->structInstantiation)
27 281 return visit(node->structInstantiation);
28
29 // Lambda function
30
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 1520 if (node->lambdaFunc)
31 8 return visit(node->lambdaFunc);
32
33 // Lambda procedure
34
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 1512 if (node->lambdaProc)
35 26 return visit(node->lambdaProc);
36
37 // Lambda expression
38
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 1486 if (node->lambdaExpr)
39 1 return visit(node->lambdaExpr);
40
41
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 1485 if (node->isNil) {
42 // Retrieve type of the nil constant
43
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 1485 const auto nilType = any_cast<llvm::Type *>(visit(node->nilType));
44 // Create constant nil value
45 1485 llvm::Constant *nilValue = llvm::Constant::getNullValue(nilType);
46 // Return it
47
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 2970 return LLVMExprResult{.constant = nilValue};
48 }
49
50 − throw CompilerError(UNHANDLED_BRANCH, "Value fall-through"); // GCOV_EXCL_LINE
51 }
52
53 15215 std::any IRGenerator::visitConstant(const ConstantNode *node) {
54
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 15215 return getConst(node->getCompileTimeValue(), node->getEvaluatedSymbolType(manIdx), node);
55 }
56
57 14497 std::any IRGenerator::visitFctCall(const FctCallNode *node) {
58
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 14497 diGenerator.setSourceLocation(node);
59
60
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 14497 const FctCallNode::FctCallData &data = node->data.at(manIdx);
61
62 14497 Function *spiceFunc = data.callee;
63 14497 std::string mangledName;
64
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 14497 if (!data.isFctPtrCall())
65
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 14452 mangledName = spiceFunc->getMangledName();
66 14497 std::vector<llvm::Value *> argValues;
67
68 // Get entry of the first fragment
69 14497 SymbolTableEntry *firstFragEntry = currentScope->lookup(node->functionNameFragments.front());
70
71 // Get this type
72 14497 llvm::Value *thisPtr = nullptr;
73
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 14497 if (data.isMethodCall()) {
74
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 5824 assert(!data.isCtorCall());
75
76 // Retrieve entry of the first fragment
77
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 5824 const QualType baseType = firstFragEntry->getQualType().getBase();
78
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 5824 assert(firstFragEntry != nullptr && baseType.isOneOf({TY_STRUCT, TY_INTERFACE}));
79
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 5824 Scope *structScope = baseType.getBodyScope();
80
81 // Get address of the referenced variable / struct instance
82
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 5824 thisPtr = firstFragEntry->getAddress();
83
84 // Auto de-reference 'this' pointer
85
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 5824 QualType firstFragmentType = firstFragEntry->getQualType();
86
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 5824 autoDeReferencePtr(thisPtr, firstFragmentType);
87
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 5824 llvm::Type *structTy = baseType.toLLVMType(sourceFile);
88
89 // Traverse through structs - the first fragment is already looked up and the last one is the function name
90
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 6662 for (size_t i = 1; i < node->functionNameFragments.size() - 1; i++) {
91
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 838 const std::string identifier = node->functionNameFragments.at(i);
92 // Retrieve field entry
93 838 SymbolTableEntry *fieldEntry = structScope->lookupStrict(identifier);
94
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 838 assert(fieldEntry != nullptr);
95
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 838 QualType fieldEntryType = fieldEntry->getQualType();
96
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 838 assert(fieldEntryType.getBase().isOneOf({TY_STRUCT, TY_INTERFACE}));
97 // Get struct type and scope
98
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 838 structScope = fieldEntryType.getBase().getBodyScope();
99
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 838 assert(structScope != nullptr);
100 // Get address of field
101
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 838 thisPtr = insertStructGEP(structTy, thisPtr, fieldEntry->orderIndex);
102 // Auto de-reference pointer and get new struct type
103
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 838 autoDeReferencePtr(thisPtr, fieldEntryType);
104
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 838 structTy = fieldEntryType.getBase().toLLVMType(sourceFile);
105 838 }
106
107 // Add 'this' pointer to the front of the argument list
108
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 5824 argValues.push_back(thisPtr);
109 }
110
111
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 14497 if (data.isCtorCall()) {
112
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 2212 assert(!data.isMethodCall());
113
114
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 2212 llvm::Type *thisType = spiceFunc->thisType.toLLVMType(sourceFile);
115
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 2212 thisPtr = insertAlloca(thisType);
116
117 // Add 'this' pointer to the front of the argument list
118
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 2212 argValues.push_back(thisPtr);
119 }
120
121 // If we have a lambda call that takes captures, add them to the argument list
122 14497 llvm::Value *fctPtr = nullptr;
123
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 14497 if (data.isFctPtrCall()) {
124
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 45 llvm::Value *fatPtr = firstFragEntry->getAddress();
125 // Load fctPtr
126
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 45 llvm::StructType *fatStructType = llvm::StructType::get(context, {builder.getPtrTy(), builder.getPtrTy()});
127
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 45 fctPtr = insertStructGEP(fatStructType, fatPtr, 0);
128
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 45 if (firstFragEntry->getQualType().hasLambdaCaptures()) {
129 // Load captures struct
130
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 16 llvm::Value *capturesPtrPtr = insertStructGEP(fatStructType, fatPtr, 1);
131
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 16 llvm::Value *capturesPtr = insertLoad(builder.getPtrTy(), capturesPtrPtr, false, CAPTURES_PARAM_NAME);
132 // Add captures to argument list
133
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 16 argValues.push_back(capturesPtr);
134 }
135 }
136
137 // Get arg values
138
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 14497 if (node->hasArgs) {
139
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 11091 const std::vector<AssignExprNode *> args = node->argLst->args;
140
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 11091 argValues.reserve(args.size());
141 const QualTypeList paramSTypes =
142
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 11091 data.isFctPtrCall() ? firstFragEntry->getQualType().getBase().getFunctionParamTypes() : spiceFunc->getParamTypes();
143
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 11091 assert(paramSTypes.size() == args.size());
144
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 28443 for (size_t i = 0; i < args.size(); i++) {
145
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 17352 AssignExprNode *argNode = args.at(i);
146
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 17352 const auto &[copyCtor] = node->argLst->argInfos.at(i);
147
148
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 17352 const QualType &expectedSTy = paramSTypes.at(i);
149
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 17352 const QualType &actualSTy = argNode->getEvaluatedSymbolType(manIdx);
150
151 18439 const auto matchFct = [](const QualType &lhsTy, const QualType &rhsTy) {
152
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 18439 return lhsTy.matches(rhsTy, false, true, true) || lhsTy.matchesInterfaceImplementedByStruct(rhsTy);
153 };
154
155
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 17352 if (matchFct(expectedSTy, actualSTy)) {
156 // Resolve address if actual type is reference, otherwise value
157
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 16252 if (actualSTy.isRef()) {
158
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 490 argValues.push_back(resolveAddress(argNode));
159 } else {
160
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 15762 if (copyCtor) {
161
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 14 assert(!actualSTy.isTriviallyCopyable(node));
162
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 14 llvm::Value *originalPtr = resolveAddress(argNode);
163
164 // Generate copy ctor call
165
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 14 llvm::Type *valueType = actualSTy.toLLVMType(sourceFile);
166
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 14 llvm::Value *valueCopyPtr = insertAlloca(valueType, "arg.copy");
167
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 42 generateCtorOrDtorCall(valueCopyPtr, copyCtor, {originalPtr});
168
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 14 llvm::Value *newValue = insertLoad(valueType, valueCopyPtr);
169
170 // Attach address of copy to anonymous symbol
171
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 14 SymbolTableEntry *anonymousSymbol = currentScope->symbolTable.lookupAnonymous(argNode->codeLoc, SIZE_MAX);
172
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 14 anonymousSymbol->updateAddress(valueCopyPtr);
173
174
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 14 argValues.push_back(newValue);
175 } else {
176
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 15748 argValues.push_back(resolveValue(argNode));
177 }
178 }
179
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 1100 } else if (expectedSTy.isRef() && matchFct(expectedSTy.getContained(), actualSTy)) { // Matches with ref
180
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 952 llvm::Value *argAddress = resolveAddress(argNode);
181
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 952 argValues.push_back(argAddress);
182
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 148 } else if (actualSTy.isRef() && matchFct(expectedSTy, actualSTy.getContained())) { // Matches with ref
183
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 135 llvm::Value *argAddress = resolveValue(argNode);
184
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 135 argValues.push_back(argAddress);
185 } else { // Need implicit cast
186
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 13 llvm::Value *argAddress = resolveAddress(argNode);
187
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 13 argValues.push_back(doImplicitCast(argAddress, expectedSTy, actualSTy));
188 }
189 }
190 11091 }
191
192 // Retrieve return and param types
193
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 14497 QualType returnSType(TY_DYN);
194 14497 QualTypeList paramSTypes;
195
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 14497 if (data.isFctPtrCall()) {
196
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 45 if (firstFragEntry->getQualType().isBase(TY_FUNCTION))
197
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 19 returnSType = firstFragEntry->getQualType().getBase().getFunctionReturnType();
198
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 45 paramSTypes = firstFragEntry->getQualType().getBase().getFunctionParamTypes();
199 } else {
200 14452 returnSType = spiceFunc->returnType;
201
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 14452 paramSTypes = spiceFunc->getParamTypes();
202 }
203
204 // Function is not defined in the current module -> declare it
205 llvm::FunctionType *fctType;
206
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 14497 if (llvm::Function *fct = module->getFunction(mangledName)) {
207
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 11779 fctType = fct->getFunctionType();
208 } else {
209 // Get returnType
210
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 2718 llvm::Type *returnType = builder.getVoidTy();
211
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 2718 if (!returnSType.is(TY_DYN))
212
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 1663 returnType = returnSType.toLLVMType(sourceFile);
213
214 // Get arg types
215 2718 std::vector<llvm::Type *> argTypes;
216
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 2718 if (data.isMethodCall() || data.isCtorCall())
217
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 1712 argTypes.push_back(builder.getPtrTy()); // This pointer
218
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 2718 if (data.isFctPtrCall() && firstFragEntry->getQualType().hasLambdaCaptures())
219
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 16 argTypes.push_back(builder.getPtrTy()); // Capture pointer
220
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 5290 for (const QualType &paramType : paramSTypes)
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 2572 argTypes.push_back(paramType.toLLVMType(sourceFile));
222
223
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 2718 fctType = llvm::FunctionType::get(returnType, argTypes, false);
224
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 2718 if (!data.isFctPtrCall() && !data.isVirtualMethodCall())
225
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 2656 module->getOrInsertFunction(mangledName, fctType);
226 2718 }
227
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 14497 assert(fctType != nullptr);
228
229 llvm::CallInst *result;
230
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 14497 if (data.isVirtualMethodCall()) {
231
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 17 assert(data.callee->isVirtual);
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 17 assert(thisPtr != nullptr);
233 // Load VTable
234
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 17 llvm::Value *vtablePtr = insertLoad(builder.getPtrTy(), thisPtr, false, "vtable.addr");
235 17 const size_t vtableIndex = data.callee->vtableIndex;
236 // Lookup function pointer in VTable
237
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 34 fctPtr = insertInBoundsGEP(builder.getPtrTy(), vtablePtr, builder.getInt64(vtableIndex), "vfct.addr");
238
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 17 llvm::Value *fct = insertLoad(builder.getPtrTy(), fctPtr, false, "fct");
239
240 // Generate function call
241
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 17 result = builder.CreateCall({fctType, fct}, argValues);
242
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 14480 } else if (data.isFctPtrCall()) {
243
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 45 assert(firstFragEntry != nullptr);
244
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 45 QualType firstFragType = firstFragEntry->getQualType();
245
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 45 if (!fctPtr)
246 ✗ fctPtr = firstFragEntry->getAddress();
247
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 45 autoDeReferencePtr(fctPtr, firstFragType);
248
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 45 llvm::Value *fct = insertLoad(builder.getPtrTy(), fctPtr, false, "fct");
249
250 // Generate function call
251
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 45 result = builder.CreateCall({fctType, fct}, argValues);
252 } else {
253 // Get callee function
254
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 14435 llvm::Function *callee = module->getFunction(mangledName);
255
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 14435 assert(callee != nullptr);
256
257 // Generate function call
258
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 14435 result = builder.CreateCall(callee, argValues);
259 }
260
261
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 14497 if (data.isMethodCall() || data.isCtorCall() || data.isVirtualMethodCall()) {
262
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 8036 result->addParamAttr(0, llvm::Attribute::NoUndef);
263
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 8036 result->addParamAttr(0, llvm::Attribute::NonNull);
264
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 8036 llvm::Type *thisType = data.thisType.toLLVMType(sourceFile);
265
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 8036 result->addDereferenceableParamAttr(0, module->getDataLayout().getTypeStoreSize(thisType));
266
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 8036 result->addParamAttr(0, llvm::Attribute::getWithAlignment(context, module->getDataLayout().getABITypeAlign(thisType)));
267 }
268
269 // Attach address to anonymous symbol to keep track of de-allocation
270 14497 SymbolTableEntry *anonymousSymbol = nullptr;
271 14497 llvm::Value *resultPtr = nullptr;
272
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 14497 if (returnSType.is(TY_STRUCT) || data.isCtorCall()) {
273
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 3109 anonymousSymbol = currentScope->symbolTable.lookupAnonymous(node->codeLoc);
274
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 3109 if (anonymousSymbol != nullptr) {
275
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 253 if (data.isCtorCall()) {
276
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 171 anonymousSymbol->updateAddress(thisPtr);
277 } else {
278
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 82 resultPtr = insertAlloca(result->getType());
279
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 82 insertStore(result, resultPtr);
280
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 82 anonymousSymbol->updateAddress(resultPtr);
281 }
282 }
283 }
284
285 // In case this is a constructor call, return the thisPtr as pointer
286
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 14497 if (data.isCtorCall())
287
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 4424 return LLVMExprResult{.ptr = thisPtr, .refPtr = resultPtr, .entry = anonymousSymbol};
288
289 // In case this is a callee, returning a reference, return the address
290
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 12285 if (returnSType.isRef())
291
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 1360 return LLVMExprResult{.ptr = result, .refPtr = resultPtr, .entry = anonymousSymbol};
292
293 // Otherwise return the value
294
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 23210 return LLVMExprResult{.value = result, .ptr = resultPtr, .entry = anonymousSymbol};
295 14497 }
296
297 54 std::any IRGenerator::visitArrayInitialization(const ArrayInitializationNode *node) {
298 // Return immediately if the initialization is empty
299
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 54 if (node->actualSize == 0)
300 ✗ return LLVMExprResult{.node = node};
301
302 // Visit array items
303 54 bool canBeConstant = true;
304 54 std::vector<LLVMExprResult> itemResults;
305
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 54 itemResults.reserve(node->actualSize);
306
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 404 for (const AssignExprNode *itemNode : node->itemLst->args) {
307
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 350 auto item = std::any_cast<LLVMExprResult>(visit(itemNode));
308 350 canBeConstant &= item.constant != nullptr;
309 350 item.node = itemNode;
310
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 350 itemResults.push_back(item);
311 }
312
313 // Get LLVM type of item and array
314
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 54 assert(!itemResults.empty());
315
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 54 const QualType &firstItemSTy = node->itemLst->args.front()->getEvaluatedSymbolType(manIdx);
316
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 54 llvm::Type *itemType = firstItemSTy.toLLVMType(sourceFile);
317
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 54 llvm::ArrayType *arrayType = llvm::ArrayType::get(itemType, node->actualSize);
318
319
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 54 if (canBeConstant) { // All items are constants, so we can create a global constant array
320 // Collect constants
321 52 std::vector<llvm::Constant *> constants;
322
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 397 for (const LLVMExprResult &exprResult : itemResults) {
323 // Delete potential constant globals, that were already created a layer below
324
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 345 if (exprResult.constant->getType()->isArrayTy())
325
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 22 module->getNamedGlobal(exprResult.ptr->getName())->eraseFromParent();
326
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 345 constants.push_back(exprResult.constant);
327 }
328
329 // Create global array
330
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 52 llvm::Constant *constantArray = llvm::ConstantArray::get(arrayType, constants);
331
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 52 llvm::Value *arrayAddr = createGlobalConst(ANON_GLOBAL_ARRAY_NAME, constantArray);
332
333
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 52 return LLVMExprResult{.constant = constantArray, .ptr = arrayAddr};
334 52 } else { // We have non-immediate values as items, so we need to take normal arrays as fallback
335
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 2 llvm::Value *arrayAddr = insertAlloca(arrayType);
336
337 // Retrieve address of first item
338
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 2 llvm::Value *firstItemAddress = insertInBoundsGEP(arrayType, arrayAddr, builder.getInt64(0));
339
340 // Store all array items at their corresponding offsets
341 2 llvm::Value *currentItemAddress = firstItemAddress;
342
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 7 for (size_t i = 0; i < itemResults.size(); i++) {
343 5 LLVMExprResult &exprResult = itemResults[i];
344
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 5 llvm::Value *itemValue = resolveValue(exprResult.node, exprResult);
345 // Retrieve current item address
346
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 5 if (i >= 1)
347
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 3 currentItemAddress = insertInBoundsGEP(itemType, currentItemAddress, builder.getInt64(1));
348 // Store the item value
349
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 5 const bool storeVolatile = exprResult.entry != nullptr && exprResult.entry->isVolatile;
350
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 5 insertStore(itemValue, currentItemAddress, storeVolatile);
351 }
352
353
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 4 return LLVMExprResult{.ptr = arrayAddr};
354 }
355 54 }
356
357 281 std::any IRGenerator::visitStructInstantiation(const StructInstantiationNode *node) {
358 // Get struct object
359
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 281 const Struct *spiceStruct = node->instantiatedStructs.at(manIdx);
360
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 281 assert(spiceStruct != nullptr);
361 281 const QualTypeList &fieldTypes = spiceStruct->fieldTypes;
362
363 // Can only be constant if none of the fields is of type reference
364
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 281 bool canBeConstant = !spiceStruct->hasReferenceFields();
365
366 // Get struct type
367
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 281 assert(spiceStruct->entry != nullptr);
368
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 281 const auto structType = reinterpret_cast<llvm::StructType *>(spiceStruct->entry->getQualType().toLLVMType(sourceFile));
369
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 281 assert(structType != nullptr);
370
371
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 281 if (!node->fieldLst) {
372
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 10 llvm::Constant *constantStruct = getDefaultValueForSymbolType(spiceStruct->entry->getQualType());
373
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 20 return LLVMExprResult{.constant = constantStruct};
374 }
375
376 // Visit struct field values
377 271 std::vector<LLVMExprResult> fieldValueResults;
378
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 271 fieldValueResults.reserve(spiceStruct->fieldTypes.size());
379
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 670 for (const AssignExprNode *fieldValueNode : node->fieldLst->args) {
380
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 399 auto fieldValue = std::any_cast<LLVMExprResult>(visit(fieldValueNode));
381 399 fieldValue.node = fieldValueNode;
382
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 399 fieldValueResults.push_back(fieldValue);
383 399 canBeConstant &= fieldValue.constant != nullptr;
384 }
385
386
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 271 if (canBeConstant) { // All field values are constants, so we can create a global constant struct instantiation
387 // Collect constants
388 25 std::vector<llvm::Constant *> constants;
389 // For each interface a nullptr
390
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 25 for (const QualType &interfaceType : spiceStruct->interfaceTypes)
391 ✗ constants.push_back(getDefaultValueForSymbolType(interfaceType));
392 // Constant value for each field
393
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 105 for (const LLVMExprResult &exprResult : fieldValueResults)
394
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 80 constants.push_back(exprResult.constant);
395
396 // Create global constant struct
397
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 25 llvm::Constant *constantStruct = llvm::ConstantStruct::get(structType, constants);
398
399
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 25 return LLVMExprResult{.constant = constantStruct};
400 25 } else { // We have at least one non-immediate value, so we need to take normal struct instantiation as fallback
401
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 246 llvm::Value *structAddr = insertAlloca(structType);
402 246 const size_t interfaceCount = spiceStruct->interfaceTypes.size();
403 246 const size_t fieldCount = spiceStruct->fieldTypes.size();
404 246 size_t i = 0;
405
406 // Store interface values at their corresponding offsets
407
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 246 for (; i < interfaceCount; i++) {
408 ✗ const QualType &interfaceType = spiceStruct->interfaceTypes.at(i);
409 // Get field value
410 ✗ llvm::Value *itemValue = getDefaultValueForSymbolType(interfaceType);
411 // Get field address
412 ✗ llvm::Value *currentFieldAddress = insertStructGEP(structType, structAddr, i);
413 // Store the item value
414 ✗ insertStore(itemValue, currentFieldAddress);
415 }
416
417 // Store all field values at their corresponding offsets
418
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 565 for (; i < interfaceCount + fieldCount; i++) {
419
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 319 LLVMExprResult &exprResult = fieldValueResults.at(i);
420 // Get field value
421
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 319 llvm::Value *itemValue = fieldTypes.at(i).isRef() ? resolveAddress(exprResult) : resolveValue(exprResult.node, exprResult);
422 // Get field address
423
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 319 llvm::Value *currentFieldAddress = insertStructGEP(structType, structAddr, i);
424 // Store the item value
425
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 319 const bool storeVolatile = exprResult.entry != nullptr && exprResult.entry->isVolatile;
426
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 319 insertStore(itemValue, currentFieldAddress, storeVolatile);
427 }
428
429 // Attach address to anonymous symbol to keep track of de-allocation
430
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 246 SymbolTableEntry *returnSymbol = currentScope->symbolTable.lookupAnonymous(node->codeLoc);
431
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 246 if (returnSymbol != nullptr)
432
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 8 returnSymbol->updateAddress(structAddr);
433
434
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 492 return LLVMExprResult{.ptr = structAddr};
435 }
436 271 }
437
438 8 std::any IRGenerator::visitLambdaFunc(const LambdaFuncNode *node) {
439
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 8 Function spiceFunc = node->manifestations.at(manIdx);
440 8 ParamInfoList paramInfoList;
441 8 std::vector<llvm::Type *> paramTypes;
442
443 // Change scope
444
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 8 Scope *bodyScope = currentScope = currentScope->getChildScope(node->getScopeId());
445
446 // If there are captures, we pass them in a struct as the first function argument
447 8 const CaptureMap &captures = bodyScope->symbolTable.captures;
448 8 const bool hasCaptures = !captures.empty();
449 8 llvm::Type *capturesStructType = nullptr;
450
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 8 if (hasCaptures) {
451 // Create captures struct type
452
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 4 capturesStructType = buildCapturesContainerType(captures);
453 // Add the captures struct as first parameter
454
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 4 paramInfoList.emplace_back(CAPTURES_PARAM_NAME, nullptr);
455
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 4 paramTypes.push_back(builder.getPtrTy()); // The capture struct is always passed as pointer
456 }
457
458 // Visit parameters
459 8 size_t argIdx = 0;
460
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 8 if (node->hasParams) {
461 4 const size_t numOfParams = spiceFunc.paramList.size();
462
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 4 paramInfoList.reserve(numOfParams);
463
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 4 paramTypes.reserve(numOfParams);
464
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 10 for (; argIdx < numOfParams; argIdx++) {
465
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 6 const DeclStmtNode *param = node->paramLst->params.at(argIdx);
466 // Get symbol table entry of param
467
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 6 SymbolTableEntry *paramSymbol = currentScope->lookupStrict(param->varName);
468
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 6 assert(paramSymbol != nullptr);
469 // Retrieve type of param
470
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 6 llvm::Type *paramType = spiceFunc.getParamTypes().at(argIdx).toLLVMType(sourceFile);
471 // Add it to the lists
472
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 6 paramInfoList.emplace_back(param->varName, paramSymbol);
473
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 6 paramTypes.push_back(paramType);
474 }
475 }
476
477 // Get return type
478
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 8 llvm::Type *returnType = spiceFunc.returnType.toLLVMType(sourceFile);
479
480 // Create function or implement declared function
481
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 8 spiceFunc.mangleSuffix = "." + std::to_string(manIdx);
482
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 8 const std::string mangledName = spiceFunc.getMangledName();
483
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 8 llvm::FunctionType *funcType = llvm::FunctionType::get(returnType, paramTypes, false);
484
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 8 module->getOrInsertFunction(mangledName, funcType);
485
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 8 llvm::Function *lambda = module->getFunction(mangledName);
486
487 // Set attributes to function
488 8 lambda->setDSOLocal(true);
489
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 8 lambda->setLinkage(llvm::Function::PrivateLinkage);
490
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 8 enableFunctionInstrumentation(lambda);
491
492 // In case of captures, add attribute to captures argument
493
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 8 if (hasCaptures) {
494
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 4 lambda->addParamAttr(0, llvm::Attribute::NoUndef);
495
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 4 lambda->addParamAttr(0, llvm::Attribute::NonNull);
496
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 4 lambda->addDereferenceableParamAttr(0, module->getDataLayout().getPointerSize());
497 }
498
499 // Add debug info
500
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 8 diGenerator.generateFunctionDebugInfo(lambda, &spiceFunc, true);
501
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 8 diGenerator.setSourceLocation(node);
502
503 // Save alloca insert markers
504 8 llvm::BasicBlock *allocaInsertBlockOrig = allocaInsertBlock;
505 8 llvm::AllocaInst *allocaInsertInstOrig = allocaInsertInst;
506 8 llvm::BasicBlock *bOrig = builder.GetInsertBlock();
507
508 // Create entry block
509
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 8 llvm::BasicBlock *bEntry = createBlock();
510
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 8 switchToBlock(bEntry, lambda);
511
512 // Reset alloca insert markers to this block
513 8 allocaInsertBlock = bEntry;
514 8 allocaInsertInst = nullptr;
515
516 // Declare result variable
517
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 24 SymbolTableEntry *resultEntry = currentScope->lookupStrict(RETURN_VARIABLE_NAME);
518
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 8 assert(resultEntry != nullptr);
519
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 8 llvm::Value *resultAddr = insertAlloca(returnType, RETURN_VARIABLE_NAME);
520
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 8 resultEntry->updateAddress(resultAddr);
521 // Generate debug info
522
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 16 diGenerator.generateLocalVarDebugInfo(RETURN_VARIABLE_NAME, resultAddr);
523
524 // Store function argument values
525 8 llvm::Value *captureStructPtrPtr = nullptr;
526
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 18 for (auto &arg : lambda->args()) {
527 // Get parameter info
528 10 const size_t argNumber = arg.getArgNo();
529
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 10 auto [paramName, paramSymbol] = paramInfoList.at(argNumber);
530 // Allocate space for it
531
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 10 llvm::Type *paramType = funcType->getParamType(argNumber);
532
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 10 llvm::Value *paramAddress = insertAlloca(paramType, paramName);
533 // Update the symbol table entry
534
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 10 const bool isCapturesStruct = hasCaptures && argNumber == 0;
535
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 10 if (isCapturesStruct)
536 4 captureStructPtrPtr = paramAddress;
537 else
538
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 6 paramSymbol->updateAddress(paramAddress);
539 // Store the value at the new address
540
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 10 insertStore(&arg, paramAddress);
541 // Generate debug info
542
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 10 if (!isCapturesStruct)
543
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 6 diGenerator.generateLocalVarDebugInfo(paramName, paramAddress, argNumber + 1);
544 10 }
545
546 // Store the default values for optional function args
547
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 8 if (node->paramLst) {
548
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 4 const std::vector<DeclStmtNode *> params = node->paramLst->params;
549
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 4 for (; argIdx < params.size(); argIdx++)
550 ✗ visit(params.at(argIdx));
551 4 }
552
553 // Extract captures from captures struct
554
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 8 if (hasCaptures) {
555
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 4 assert(!paramInfoList.empty());
556
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 4 unpackCapturesToLocalVariables(captures, captureStructPtrPtr, capturesStructType);
557 }
558
559 // Visit body
560
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 8 visit(node->body);
561
562 // Create return statement if the block is not terminated yet
563
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 8 if (!blockAlreadyTerminated) {
564 ✗ llvm::Value *result = insertLoad(returnType, resultEntry->getAddress());
565 ✗ builder.CreateRet(result);
566 }
567
568 // Pop capture addresses
569
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 8 if (hasCaptures)
570
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 10 for (const auto &capture : captures | std::views::values)
571
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 6 capture.capturedSymbol->popAddress();
572
573 // Conclude debug info for function
574
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 8 diGenerator.concludeFunctionDebugInfo();
575
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 8 diGenerator.setSourceLocation(node);
576
577 // Restore alloca insert markers
578
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 8 builder.SetInsertPoint(bOrig);
579 8 blockAlreadyTerminated = false;
580 8 allocaInsertBlock = allocaInsertBlockOrig;
581 8 allocaInsertInst = allocaInsertInstOrig;
582
583 // Change back to original scope
584 8 currentScope = currentScope->parent;
585
586 // Verify function
587
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 8 verifyFunction(lambda, node->codeLoc);
588
589 // Captures, create a struct { <fct-ptr>, <capture struct ptr> }
590
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 8 llvm::Value *result = buildFatFctPtr(bodyScope, capturesStructType, lambda);
591
592
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 16 return LLVMExprResult{.ptr = result, .node = node};
593 8 }
594
595 26 std::any IRGenerator::visitLambdaProc(const LambdaProcNode *node) {
596
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 26 Function spiceFunc = node->manifestations.at(manIdx);
597 26 ParamInfoList paramInfoList;
598 26 std::vector<llvm::Type *> paramTypes;
599
600 // Change scope
601
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 26 Scope *bodyScope = currentScope = currentScope->getChildScope(node->getScopeId());
602
603 // If there are captures, we pass them in a struct as the first function argument
604 26 const CaptureMap &captures = bodyScope->symbolTable.captures;
605 26 const bool hasCaptures = !captures.empty();
606 26 llvm::Type *capturesStructType = nullptr;
607
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 26 if (hasCaptures) {
608 // Create captures struct type
609
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 11 capturesStructType = buildCapturesContainerType(captures);
610 // Add the captures struct as first parameter
611
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 11 paramInfoList.emplace_back(CAPTURES_PARAM_NAME, nullptr);
612
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 11 paramTypes.push_back(builder.getPtrTy()); // The captures struct is always passed as pointer
613 }
614
615 // Visit parameters
616 26 size_t argIdx = 0;
617
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 26 if (node->hasParams) {
618 5 const size_t numOfParams = spiceFunc.paramList.size();
619
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 5 paramInfoList.reserve(numOfParams);
620
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 5 paramTypes.reserve(numOfParams);
621
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 12 for (; argIdx < numOfParams; argIdx++) {
622
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 7 const DeclStmtNode *param = node->paramLst->params.at(argIdx);
623 // Get symbol table entry of param
624
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 7 SymbolTableEntry *paramSymbol = currentScope->lookupStrict(param->varName);
625
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 7 assert(paramSymbol != nullptr);
626 // Retrieve type of param
627
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 7 llvm::Type *paramType = spiceFunc.getParamTypes().at(argIdx).toLLVMType(sourceFile);
628 // Add it to the lists
629
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 7 paramInfoList.emplace_back(param->varName, paramSymbol);
630
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 7 paramTypes.push_back(paramType);
631 }
632 }
633
634 // Create function or implement declared function
635
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 26 spiceFunc.mangleSuffix = "." + std::to_string(manIdx);
636
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 26 const std::string mangledName = spiceFunc.getMangledName();
637
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 26 llvm::FunctionType *funcType = llvm::FunctionType::get(builder.getVoidTy(), paramTypes, false);
638
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 26 module->getOrInsertFunction(mangledName, funcType);
639
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 26 llvm::Function *lambda = module->getFunction(mangledName);
640
641 // Set attributes to function
642 26 lambda->setDSOLocal(true);
643
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 26 lambda->setLinkage(llvm::Function::PrivateLinkage);
644
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 26 enableFunctionInstrumentation(lambda);
645
646 // In case of captures, add attribute to captures argument
647
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 26 if (hasCaptures) {
648
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 11 lambda->addParamAttr(0, llvm::Attribute::NoUndef);
649
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 11 lambda->addParamAttr(0, llvm::Attribute::NonNull);
650
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 11 lambda->addDereferenceableParamAttr(0, module->getDataLayout().getPointerSize());
651 }
652
653 // Add debug info
654
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 26 diGenerator.generateFunctionDebugInfo(lambda, &spiceFunc, true);
655
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 26 diGenerator.setSourceLocation(node);
656
657 // Save alloca insert markers
658 26 llvm::BasicBlock *allocaInsertBlockOrig = allocaInsertBlock;
659 26 llvm::AllocaInst *allocaInsertInstOrig = allocaInsertInst;
660 26 llvm::BasicBlock *bOrig = builder.GetInsertBlock();
661
662 // Create entry block
663
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 26 llvm::BasicBlock *bEntry = createBlock();
664
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 26 switchToBlock(bEntry, lambda);
665
666 // Reset alloca insert markers to this block
667 26 allocaInsertBlock = bEntry;
668 26 allocaInsertInst = nullptr;
669
670 // Save values of parameters to locals
671 26 llvm::Value *captureStructPtrPtr = nullptr;
672
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 44 for (auto &arg : lambda->args()) {
673 // Get information about the parameter
674 18 const size_t argNumber = arg.getArgNo();
675
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 18 auto [paramName, paramSymbol] = paramInfoList.at(argNumber);
676 // Allocate space for it
677
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 18 llvm::Type *paramType = funcType->getParamType(argNumber);
678
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 18 llvm::Value *paramAddress = insertAlloca(paramType, paramName);
679 // Update the symbol table entry
680
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 18 const bool isCapturesStruct = hasCaptures && argNumber == 0;
681
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 18 if (isCapturesStruct)
682 11 captureStructPtrPtr = paramAddress;
683 else
684
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 7 paramSymbol->updateAddress(paramAddress);
685 // Store the value at the new address
686
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 18 insertStore(&arg, paramAddress);
687 // Generate debug info
688
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 18 if (!isCapturesStruct)
689
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 7 diGenerator.generateLocalVarDebugInfo(paramName, paramAddress, argNumber + 1);
690 18 }
691
692 // Store the default values for optional function args
693
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 26 if (node->paramLst) {
694
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 5 const std::vector<DeclStmtNode *> params = node->paramLst->params;
695
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 5 for (; argIdx < params.size(); argIdx++)
696 ✗ visit(params.at(argIdx));
697 5 }
698
699 // Extract captures from captures struct
700
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 26 if (hasCaptures) {
701
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 11 assert(!paramInfoList.empty());
702
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 11 unpackCapturesToLocalVariables(captures, captureStructPtrPtr, capturesStructType);
703 }
704
705 // Visit body
706
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 26 visit(node->body);
707
708 // Create return statement if the block is not terminated yet
709
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 26 if (!blockAlreadyTerminated)
710
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 26 builder.CreateRetVoid();
711
712 // Pop capture addresses
713
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 26 if (hasCaptures)
714
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 29 for (const auto &capture : captures | std::views::values)
715
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 18 capture.capturedSymbol->popAddress();
716
717 // Conclude debug info for function
718
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 26 diGenerator.concludeFunctionDebugInfo();
719
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 26 diGenerator.setSourceLocation(node);
720
721 // Restore alloca insert markers
722
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 26 builder.SetInsertPoint(bOrig);
723 26 blockAlreadyTerminated = false;
724 26 allocaInsertBlock = allocaInsertBlockOrig;
725 26 allocaInsertInst = allocaInsertInstOrig;
726
727 // Change back to original scope
728 26 currentScope = currentScope->parent;
729
730 // Verify function
731
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 26 verifyFunction(lambda, node->codeLoc);
732
733 // Create a struct { <fct-ptr>, <capture struct ptr> }
734
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 26 llvm::Value *result = buildFatFctPtr(bodyScope, capturesStructType, lambda);
735
736
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 52 return LLVMExprResult{.ptr = result, .node = node};
737 26 }
738
739 1 std::any IRGenerator::visitLambdaExpr(const LambdaExprNode *node) {
740
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 1 const Function &spiceFunc = node->manifestations.at(manIdx);
741 1 ParamInfoList paramInfoList;
742 1 std::vector<llvm::Type *> paramTypes;
743
744 // Change scope
745
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 1 Scope *bodyScope = currentScope = currentScope->getChildScope(node->getScopeId());
746
747 // If there are captures, we pass them in a struct as the first function argument
748 1 const CaptureMap &captures = bodyScope->symbolTable.captures;
749 1 const bool hasCaptures = !captures.empty();
750 1 llvm::Type *capturesStructType = nullptr;
751
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 1 if (hasCaptures) {
752 // Create captures struct type
753 ✗ capturesStructType = buildCapturesContainerType(captures);
754 // Add the captures struct as first parameter
755 ✗ paramInfoList.emplace_back(CAPTURES_PARAM_NAME, nullptr);
756 ✗ paramTypes.push_back(builder.getPtrTy()); // The capture struct is always passed as pointer
757 }
758
759 // Visit parameters
760 1 size_t argIdx = 0;
761
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 1 if (node->hasParams) {
762 1 const size_t numOfParams = spiceFunc.paramList.size();
763
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 1 paramInfoList.reserve(numOfParams);
764
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 1 paramTypes.reserve(numOfParams);
765
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 3 for (; argIdx < numOfParams; argIdx++) {
766
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 2 const DeclStmtNode *param = node->paramLst->params.at(argIdx);
767 // Get symbol table entry of param
768
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 2 SymbolTableEntry *paramSymbol = currentScope->lookupStrict(param->varName);
769
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 2 assert(paramSymbol != nullptr);
770 // Retrieve type of param
771
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 2 llvm::Type *paramType = spiceFunc.getParamTypes().at(argIdx).toLLVMType(sourceFile);
772 // Add it to the lists
773
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 2 paramInfoList.emplace_back(param->varName, paramSymbol);
774
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 2 paramTypes.push_back(paramType);
775 }
776 }
777
778 // Get return type
779
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 1 llvm::Type *returnType = builder.getVoidTy();
780
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 1 if (spiceFunc.isFunction())
781
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 1 returnType = spiceFunc.returnType.toLLVMType(sourceFile);
782
783 // Create function or implement declared function
784
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 1 const std::string mangledName = spiceFunc.getMangledName();
785
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 1 llvm::FunctionType *funcType = llvm::FunctionType::get(returnType, paramTypes, false);
786
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 1 module->getOrInsertFunction(mangledName, funcType);
787
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 1 llvm::Function *lambda = module->getFunction(mangledName);
788
789 // Set attributes to function
790 1 lambda->setDSOLocal(true);
791
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 1 lambda->setLinkage(llvm::Function::PrivateLinkage);
792
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 1 enableFunctionInstrumentation(lambda);
793
794 // In case of captures, add attribute to captures argument
795
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 1 if (hasCaptures) {
796 ✗ lambda->addParamAttr(0, llvm::Attribute::NoUndef);
797 ✗ lambda->addParamAttr(0, llvm::Attribute::NonNull);
798 ✗ lambda->addDereferenceableParamAttr(0, module->getDataLayout().getPointerSize());
799 }
800
801 // Add debug info
802
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 1 diGenerator.generateFunctionDebugInfo(lambda, &spiceFunc, true);
803
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 1 diGenerator.setSourceLocation(node);
804
805 // Save alloca insert markers
806 1 llvm::BasicBlock *allocaInsertBlockOrig = allocaInsertBlock;
807 1 llvm::AllocaInst *allocaInsertInstOrig = allocaInsertInst;
808 1 llvm::BasicBlock *bOrig = builder.GetInsertBlock();
809
810 // Create entry block
811
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 1 llvm::BasicBlock *bEntry = createBlock();
812
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 1 switchToBlock(bEntry, lambda);
813
814 // Reset alloca insert markers to this block
815 1 allocaInsertBlock = bEntry;
816 1 allocaInsertInst = nullptr;
817
818 // Save values of parameters to locals
819 1 llvm::Value *captureStructPtrPtr = nullptr;
820
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 3 for (auto &arg : lambda->args()) {
821 // Get information about the parameter
822 2 const size_t argNumber = arg.getArgNo();
823
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 2 auto [paramName, paramSymbol] = paramInfoList.at(argNumber);
824 // Allocate space for it
825
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 2 llvm::Type *paramType = funcType->getParamType(argNumber);
826
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 2 llvm::Value *paramAddress = insertAlloca(paramType, paramName);
827 // Update the symbol table entry
828
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 2 const bool isCapturesStruct = hasCaptures && argNumber == 0;
829
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 2 if (isCapturesStruct)
830 ✗ captureStructPtrPtr = paramAddress;
831 else
832
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 2 paramSymbol->updateAddress(paramAddress);
833 // Store the value at the new address
834
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 2 insertStore(&arg, paramAddress);
835 // Generate debug info
836
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 2 if (!isCapturesStruct)
837
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 2 diGenerator.generateLocalVarDebugInfo(paramName, paramAddress, argNumber + 1);
838 2 }
839
840 // Store the default values for optional function args
841
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 1 if (node->paramLst) {
842
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 1 const std::vector<DeclStmtNode *> params = node->paramLst->params;
843
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 1 for (; argIdx < params.size(); argIdx++)
844 ✗ visit(params.at(argIdx));
845 1 }
846
847 // Extract captures from captures struct
848
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 1 if (hasCaptures) {
849 ✗ assert(!paramInfoList.empty());
850 ✗ unpackCapturesToLocalVariables(captures, captureStructPtrPtr, capturesStructType);
851 }
852
853 // Visit lambda expression
854
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 1 llvm::Value *exprResult = resolveValue(node->lambdaExpr);
855
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 1 builder.CreateRet(exprResult);
856
857 // Pop capture addresses
858
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 1 if (hasCaptures)
859 ✗ for (const auto &val : captures | std::views::values)
860 ✗ val.capturedSymbol->popAddress();
861
862 // Conclude debug info for function
863
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 1 diGenerator.concludeFunctionDebugInfo();
864
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 1 diGenerator.setSourceLocation(node);
865
866 // Restore alloca insert markers
867
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 1 builder.SetInsertPoint(bOrig);
868 1 blockAlreadyTerminated = false;
869 1 allocaInsertBlock = allocaInsertBlockOrig;
870 1 allocaInsertInst = allocaInsertInstOrig;
871
872 // Change back to original scope
873 1 currentScope = currentScope->parent;
874
875 // Verify function
876
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 1 verifyFunction(lambda, node->codeLoc);
877 // Create a struct { <fct-ptr>, <capture struct ptr> }
878
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 1 llvm::Value *result = buildFatFctPtr(bodyScope, capturesStructType, lambda);
879
880
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 2 return LLVMExprResult{.ptr = result, .node = node};
881 1 }
882
883 2765 std::any IRGenerator::visitDataType(const DataTypeNode *node) {
884 // Only set the source location if this is not the root scope
885
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 2765 if (currentScope != rootScope && !node->isParamType && !node->isReturnType && !node->isFieldType)
886
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 1612 diGenerator.setSourceLocation(node);
887 // Retrieve symbol type
888
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 2765 const QualType symbolType = node->getEvaluatedSymbolType(manIdx);
889
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 2765 assert(!symbolType.is(TY_DYN)); // Symbol type should not be dyn anymore at this point
890
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 2765 return symbolType.toLLVMType(sourceFile);
891 }
892
893 43 llvm::Value *IRGenerator::buildFatFctPtr(Scope *bodyScope, llvm::Type *capturesStructType, llvm::Value *lambda) {
894 // Create capture struct if required
895 43 llvm::Value *capturesPtr = nullptr;
896
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 43 if (capturesStructType != nullptr) {
897
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 15 assert(bodyScope != nullptr);
898 // If we have a single capture of ptr type, we can directly store it into the fat ptr. Otherwise, we need a stack allocated
899 // struct to store the captures in a memory-efficient manner and store a pointer to that struct to the fat ptr.
900
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 15 if (capturesStructType->isPointerTy()) {
901 6 const CaptureMap &captures = bodyScope->symbolTable.captures;
902
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 6 assert(captures.size() == 1);
903 6 const Capture &capture = captures.begin()->second;
904
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 6 if (capture.getMode() == BY_VALUE) {
905 1 llvm::Type *varType = capture.capturedSymbol->getQualType().toLLVMType(sourceFile);
906
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 2 capturesPtr = insertLoad(varType, capture.capturedSymbol->getAddress());
907 } else {
908 5 capturesPtr = capture.capturedSymbol->getAddress();
909 }
910 } else {
911
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 9 capturesPtr = insertAlloca(capturesStructType, CAPTURES_PARAM_NAME);
912 9 size_t captureIdx = 0;
913
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 27 for (const auto &capture : bodyScope->symbolTable.captures | std::views::values) {
914 18 const SymbolTableEntry *capturedEntry = capture.capturedSymbol;
915 // Get address or value of captured variable, depending on the capturing mode
916
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 18 llvm::Value *capturedValue = capturedEntry->getAddress();
917
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 18 assert(capturedValue != nullptr);
918
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 18 if (capture.getMode() == BY_VALUE) {
919
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 15 llvm::Type *captureType = capturedEntry->getQualType().toLLVMType(sourceFile);
920
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 30 capturedValue = insertLoad(captureType, capturedValue);
921 }
922 // Store it in the capture struct
923
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 18 llvm::Value *captureAddress = insertStructGEP(capturesStructType, capturesPtr, captureIdx);
924
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 18 insertStore(capturedValue, captureAddress);
925 18 captureIdx++;
926 }
927 }
928 }
929
930 // Create fat ptr struct type if not exists yet
931
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 43 if (!llvmTypes.fatPtrType)
932
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 20 llvmTypes.fatPtrType = llvm::StructType::get(context, {builder.getPtrTy(), builder.getPtrTy()});
933
934 // Create fat pointer
935
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 86 llvm::Value *fatFctPtr = insertAlloca(llvmTypes.fatPtrType, "fat.ptr");
936
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 43 llvm::Value *fctPtr = insertStructGEP(llvmTypes.fatPtrType, fatFctPtr, 0);
937 43 insertStore(lambda, fctPtr);
938
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 43 llvm::Value *capturePtr = insertStructGEP(llvmTypes.fatPtrType, fatFctPtr, 1);
939
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 43 insertStore(capturesPtr != nullptr ? capturesPtr : llvm::PoisonValue::get(builder.getPtrTy()), capturePtr);
940
941 43 return fatFctPtr;
942 }
943
944 15 llvm::Type *IRGenerator::buildCapturesContainerType(const CaptureMap &captures) const {
945
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 15 assert(!captures.empty());
946
947 // If we have only one capture that is a ptr, we can just use that ptr type
948 15 const Capture &capture = captures.begin()->second;
949
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 15 if (captures.size() == 1 && (capture.capturedSymbol->getQualType().isPtr() || capture.getMode() == BY_REFERENCE))
950
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 6 return builder.getPtrTy();
951
952 // Create captures struct type
953 9 std::vector<llvm::Type *> captureTypes;
954
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 27 for (const auto &c : captures | std::views::values) {
955
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 18 if (c.getMode() == BY_VALUE)
956
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 15 captureTypes.push_back(c.capturedSymbol->getQualType().toLLVMType(sourceFile));
957 else
958
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 3 captureTypes.push_back(builder.getPtrTy());
959 }
960
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 9 return llvm::StructType::get(context, captureTypes);
961 9 }
962
963 15 void IRGenerator::unpackCapturesToLocalVariables(const CaptureMap &captures, llvm::Value *val, llvm::Type *structType) {
964
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 15 assert(!captures.empty());
965 // If we have only one capture that is a ptr, we can just load the ptr
966 15 const Capture &firstCapture = captures.begin()->second;
967
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 15 if (captures.size() == 1 && (firstCapture.capturedSymbol->getQualType().isPtr() || firstCapture.getMode() == BY_REFERENCE)) {
968 // Interpret capturesPtr as ptr to the first and only capture
969 6 llvm::Value *captureAddress = val;
970 6 firstCapture.capturedSymbol->pushAddress(captureAddress);
971 // Generate debug info
972
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 6 diGenerator.generateLocalVarDebugInfo(firstCapture.getName(), captureAddress);
973 } else {
974 // Interpret capturesPtr as ptr to the captures struct
975
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 9 llvm::Value *capturesPtr = insertLoad(builder.getPtrTy(), val);
976
977 9 size_t captureIdx = 0;
978
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 27 for (const auto &[name, capture] : captures) {
979
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 18 const std::string valueName = capture.getMode() == BY_REFERENCE ? name + ".addr" : name;
980
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 18 llvm::Value *captureAddress = insertStructGEP(structType, capturesPtr, captureIdx, valueName);
981
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 18 capture.capturedSymbol->pushAddress(captureAddress);
982 // Generate debug info
983
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 18 diGenerator.generateLocalVarDebugInfo(capture.getName(), captureAddress);
984 18 captureIdx++;
985 18 }
986 }
987 15 }
988
989 } // namespace spice::compiler
990