GCC Code Coverage Report

Directory: ../
File: src/irgenerator/GenValues.cpp
Date: 2025-02-05 01:09:36
Exec Total Coverage
Lines: 553 576 96.0%
Functions: 13 13 100.0%
Branches: 705 1254 56.2%
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 <irgenerator/NameMangling.h>
7 #include <symboltablebuilder/SymbolTableBuilder.h>
8
9 #include <llvm/IR/Module.h>
10
11 namespace spice::compiler {
12
13 13823 std::any IRGenerator::visitValue(const ValueNode *node) {
14 13823 diGenerator.setSourceLocation(node);
15
16 // Function call
17
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 13823 if (node->fctCall)
18 12465 return visit(node->fctCall);
19
20 // Array initialization
21
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 1358 if (node->arrayInitialization)
22 46 return visit(node->arrayInitialization);
23
24 // Struct instantiation
25
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 1312 if (node->structInstantiation)
26 268 return visit(node->structInstantiation);
27
28 // Lambda function
29
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 1044 if (node->lambdaFunc)
30 8 return visit(node->lambdaFunc);
31
32 // Lambda procedure
33
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 1036 if (node->lambdaProc)
34 26 return visit(node->lambdaProc);
35
36 // Lambda expression
37
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 1010 if (node->lambdaExpr)
38 1 return visit(node->lambdaExpr);
39
40
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 1009 if (node->isNil) {
41 // Retrieve type of the nil constant
42
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 1009 const auto nilType = any_cast<llvm::Type *>(visit(node->nilType));
43 // Create constant nil value
44 1009 llvm::Constant *nilValue = llvm::Constant::getNullValue(nilType);
45 // Return it
46
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 2018 return LLVMExprResult{.constant = nilValue};
47 }
48
49 − throw CompilerError(UNHANDLED_BRANCH, "Value fall-through"); // GCOV_EXCL_LINE
50 }
51
52 12793 std::any IRGenerator::visitConstant(const ConstantNode *node) {
53
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 12793 return getConst(node->getCompileTimeValue(), node->getEvaluatedSymbolType(manIdx), node);
54 }
55
56 12465 std::any IRGenerator::visitFctCall(const FctCallNode *node) {
57
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 12465 diGenerator.setSourceLocation(node);
58
59
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 12465 const FctCallNode::FctCallData &data = node->data.at(manIdx);
60
61 12465 Function *spiceFunc = data.callee;
62 12465 std::string mangledName;
63
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 12465 if (!data.isFctPtrCall())
64
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 12420 mangledName = spiceFunc->getMangledName();
65 12465 std::vector<llvm::Value *> argValues;
66
67 // Get entry of the first fragment
68 12465 SymbolTableEntry *firstFragEntry = currentScope->lookup(node->functionNameFragments.front());
69
70 // Get this type
71 12465 llvm::Value *thisPtr = nullptr;
72
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 12465 if (data.isMethodCall()) {
73
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 5019 assert(!data.isCtorCall());
74
75 // Retrieve entry of the first fragment
76
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 5019 const QualType baseType = firstFragEntry->getQualType().getBase();
77
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 5019 assert(firstFragEntry != nullptr && baseType.isOneOf({TY_STRUCT, TY_INTERFACE}));
78
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 5019 Scope *structScope = baseType.getBodyScope();
79
80 // Get address of the referenced variable / struct instance
81
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 5019 thisPtr = firstFragEntry->getAddress();
82
83 // Auto de-reference 'this' pointer
84
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 5019 QualType firstFragmentType = firstFragEntry->getQualType();
85
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 5019 autoDeReferencePtr(thisPtr, firstFragmentType);
86
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 5019 llvm::Type *structTy = baseType.toLLVMType(sourceFile);
87
88 // Traverse through structs - the first fragment is already looked up and the last one is the function name
89
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 5728 for (size_t i = 1; i < node->functionNameFragments.size() - 1; i++) {
90
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 709 const std::string identifier = node->functionNameFragments.at(i);
91 // Retrieve field entry
92 709 SymbolTableEntry *fieldEntry = structScope->lookupStrict(identifier);
93
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 709 assert(fieldEntry != nullptr);
94
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 709 QualType fieldEntryType = fieldEntry->getQualType();
95
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 709 assert(fieldEntryType.getBase().isOneOf({TY_STRUCT, TY_INTERFACE}));
96 // Get struct type and scope
97
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 709 structScope = fieldEntryType.getBase().getBodyScope();
98
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 709 assert(structScope != nullptr);
99 // Get address of field
100
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 709 llvm::Value *indices[2] = {builder.getInt64(0), builder.getInt32(fieldEntry->orderIndex)};
101
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 709 thisPtr = insertInBoundsGEP(structTy, thisPtr, indices);
102 // Auto de-reference pointer and get new struct type
103
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 709 autoDeReferencePtr(thisPtr, fieldEntryType);
104
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 709 structTy = fieldEntryType.getBase().toLLVMType(sourceFile);
105 709 }
106
107 // Add 'this' pointer to the front of the argument list
108
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 5019 argValues.push_back(thisPtr);
109 }
110
111
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 12465 if (data.isCtorCall()) {
112
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 1915 assert(!data.isMethodCall());
113
114
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 1915 llvm::Type *thisType = spiceFunc->thisType.toLLVMType(sourceFile);
115
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 1915 thisPtr = insertAlloca(thisType);
116
117 // Add 'this' pointer to the front of the argument list
118
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 1915 argValues.push_back(thisPtr);
119 }
120
121 // If we have a lambda call that takes captures, add them to the argument list
122 12465 llvm::Value *fctPtr = nullptr;
123
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 12465 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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 12465 if (node->hasArgs) {
139
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 9654 argValues.reserve(node->argLst->args.size());
140
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 9654 const std::vector<AssignExprNode *> args = node->argLst->args;
141 const QualTypeList paramSTypes =
142
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 9654 data.isFctPtrCall() ? firstFragEntry->getQualType().getBase().getFunctionParamTypes() : spiceFunc->getParamTypes();
143
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 9654 assert(paramSTypes.size() == args.size());
144
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 24529 for (size_t i = 0; i < args.size(); i++) {
145
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 14875 AssignExprNode *argNode = args.at(i);
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 14875 const auto &[copyCtor] = node->argLst->argInfos.at(i);
147
148
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 14875 const QualType &expectedSTy = paramSTypes.at(i);
149
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 14875 const QualType &actualSTy = argNode->getEvaluatedSymbolType(manIdx);
150
151 15786 const auto matchFct = [](const QualType &lhsTy, const QualType &rhsTy) {
152
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 15786 return lhsTy.matches(rhsTy, false, true, true) || lhsTy.matchesInterfaceImplementedByStruct(rhsTy);
153 };
154
155
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 14875 if (matchFct(expectedSTy, actualSTy)) {
156 // Resolve address if actual type is reference, otherwise value
157
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 13952 if (actualSTy.isRef()) {
158
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 460 argValues.push_back(resolveAddress(argNode));
159 } else {
160
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 13492 if (copyCtor) {
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 22 assert(!actualSTy.isTriviallyCopyable(node));
162
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 22 llvm::Value* originalPtr = resolveAddress(argNode);
163
164 // Generate copy ctor call
165
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 22 llvm::Type* valueType = actualSTy.toLLVMType(sourceFile);
166
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 22 llvm::Value* valueCopyPtr = insertAlloca(valueType, "arg.copy");
167
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 66 generateCtorOrDtorCall(valueCopyPtr, copyCtor, {originalPtr});
168
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 22 llvm::Value* newValue = insertLoad(valueType, valueCopyPtr);
169
170 // Attach address of copy to anonymous symbol (+1 because return value is 0)
171
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 22 SymbolTableEntry *anonymousSymbol = currentScope->symbolTable.lookupAnonymous(node->codeLoc, i + 1);
172
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 22 anonymousSymbol->updateAddress(valueCopyPtr);
173
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 22 argValues.push_back(newValue);
175 } else {
176
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 13470 argValues.push_back(resolveValue(argNode));
177 }
178 }
179
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 923 } else if (expectedSTy.isRef() && matchFct(expectedSTy.getContained(), actualSTy)) { // Matches with ref
180
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 800 llvm::Value *argAddress = resolveAddress(argNode);
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 800 argValues.push_back(argAddress);
182
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 123 } else if (actualSTy.isRef() && matchFct(expectedSTy, actualSTy.getContained())) { // Matches with ref
183
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 111 llvm::Value *argAddress = resolveValue(argNode);
184
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 111 argValues.push_back(argAddress);
185 } else { // Need implicit cast
186
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 12 llvm::Value *argAddress = resolveAddress(argNode);
187
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 12 argValues.push_back(doImplicitCast(argAddress, expectedSTy, actualSTy));
188 }
189 }
190 9654 }
191
192 // Retrieve return and param types
193
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 12465 QualType returnSType(TY_DYN);
194 12465 QualTypeList paramSTypes;
195
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 12465 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 12420 returnSType = spiceFunc->returnType;
201
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 12420 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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 12465 if (llvm::Function *fct = module->getFunction(mangledName)) {
207
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 10225 fctType = fct->getFunctionType();
208 } else {
209 // Get returnType
210
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 2240 llvm::Type *returnType = builder.getVoidTy();
211
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 2240 if (!returnSType.is(TY_DYN))
212
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 1365 returnType = returnSType.toLLVMType(sourceFile);
213
214 // Get arg types
215 2240 std::vector<llvm::Type *> argTypes;
216
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 2240 if (data.isMethodCall() || data.isCtorCall())
217
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 1386 argTypes.push_back(builder.getPtrTy()); // This pointer
218
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 2240 if (data.isFctPtrCall() && firstFragEntry->getQualType().hasLambdaCaptures())
219
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 16 argTypes.push_back(builder.getPtrTy()); // Capture pointer
220
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 4433 for (const QualType &paramType : paramSTypes)
221
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 2193 argTypes.push_back(paramType.toLLVMType(sourceFile));
222
223
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 2240 fctType = llvm::FunctionType::get(returnType, argTypes, false);
224
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 2240 if (!data.isFctPtrCall() && !data.isVirtualMethodCall())
225
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 2185 module->getOrInsertFunction(mangledName, fctType);
226 2240 }
227
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 12465 assert(fctType != nullptr);
228
229 llvm::CallInst *result;
230
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 12465 if (data.isVirtualMethodCall()) {
231
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 10 assert(data.callee->isVirtual);
232
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 10 assert(thisPtr != nullptr);
233 // Load VTable
234
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 10 llvm::Value *vtablePtr = insertLoad(builder.getPtrTy(), thisPtr, false, "vtable.addr");
235 10 const size_t vtableIndex = data.callee->vtableIndex;
236 // Lookup function pointer in VTable
237
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 20 fctPtr = insertInBoundsGEP(builder.getPtrTy(), vtablePtr, builder.getInt64(vtableIndex), "vfct.addr");
238
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 10 llvm::Value *fct = insertLoad(builder.getPtrTy(), fctPtr, false, "fct");
239
240 // Generate function call
241
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 10 result = builder.CreateCall({fctType, fct}, argValues);
242
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 12455 } 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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 12410 llvm::Function *callee = module->getFunction(mangledName);
255
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 12410 assert(callee != nullptr);
256
257 // Generate function call
258
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 12410 result = builder.CreateCall(callee, argValues);
259 }
260
261
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 12465 if (data.isMethodCall() || data.isCtorCall() || data.isVirtualMethodCall()) {
262
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 6934 llvm::Type *thisType = data.thisType.toLLVMType(sourceFile);
263
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 6934 result->addParamAttr(0, llvm::Attribute::NoUndef);
264
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 6934 result->addParamAttr(0, llvm::Attribute::NonNull);
265
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 6934 result->addDereferenceableParamAttr(0, module->getDataLayout().getTypeStoreSize(thisType));
266
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 6934 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 12465 SymbolTableEntry *anonymousSymbol = nullptr;
271 12465 llvm::Value *resultPtr = nullptr;
272
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 12465 if (returnSType.is(TY_STRUCT) || data.isCtorCall()) {
273
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 2626 anonymousSymbol = currentScope->symbolTable.lookupAnonymous(node->codeLoc);
274
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 2626 if (anonymousSymbol != nullptr) {
275
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 793 if (data.isCtorCall()) {
276
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 719 anonymousSymbol->updateAddress(thisPtr);
277 } else {
278
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 74 resultPtr = insertAlloca(result->getType());
279
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 74 insertStore(result, resultPtr);
280
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 74 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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 12465 if (data.isCtorCall())
287
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 3830 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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 10550 if (returnSType.isRef())
291
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 1244 return LLVMExprResult{.ptr = result, .refPtr = resultPtr, .entry = anonymousSymbol};
292
293 // Otherwise return the value
294
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 19856 return LLVMExprResult{.value = result, .ptr = resultPtr, .entry = anonymousSymbol};
295 12465 }
296
297 46 std::any IRGenerator::visitArrayInitialization(const ArrayInitializationNode *node) {
298 // Return immediately if the initialization is empty
299
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 46 if (node->actualSize == 0)
300 ✗ return LLVMExprResult{.node = node};
301
302 // Visit array items
303 46 bool canBeConstant = true;
304 46 std::vector<LLVMExprResult> itemResults;
305
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 46 itemResults.reserve(node->actualSize);
306
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 340 for (const AssignExprNode *itemNode : node->itemLst->args) {
307
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 294 auto item = std::any_cast<LLVMExprResult>(visit(itemNode));
308 294 canBeConstant &= item.constant != nullptr;
309 294 item.node = itemNode;
310
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 294 itemResults.push_back(item);
311 }
312
313 // Get LLVM type of item and array
314
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 46 assert(!itemResults.empty());
315
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 46 const QualType &firstItemSTy = node->itemLst->args.front()->getEvaluatedSymbolType(manIdx);
316
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 46 llvm::Type *itemType = firstItemSTy.toLLVMType(sourceFile);
317
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 46 llvm::ArrayType *arrayType = llvm::ArrayType::get(itemType, node->actualSize);
318
319
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 46 if (canBeConstant) { // All items are constants, so we can create a global constant array
320 // Collect constants
321 44 std::vector<llvm::Constant *> constants;
322
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 333 for (const LLVMExprResult &exprResult : itemResults) {
323 // Delete potential constant globals, that were already created a layer below
324
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 289 if (exprResult.constant->getType()->isArrayTy())
325
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 22 module->getNamedGlobal(exprResult.ptr->getName())->eraseFromParent();
326
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 289 constants.push_back(exprResult.constant);
327 }
328
329 // Create global array
330
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 44 llvm::Constant *constantArray = llvm::ConstantArray::get(arrayType, constants);
331
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 44 llvm::Value *arrayAddr = createGlobalConst(ANON_GLOBAL_ARRAY_NAME, constantArray);
332
333
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 44 return LLVMExprResult{.constant = constantArray, .ptr = arrayAddr};
334 44 } 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 46 }
356
357 268 std::any IRGenerator::visitStructInstantiation(const StructInstantiationNode *node) {
358 // Get struct object
359
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 268 const Struct *spiceStruct = node->instantiatedStructs.at(manIdx);
360
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 268 assert(spiceStruct != nullptr);
361 268 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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 268 bool canBeConstant = !spiceStruct->hasReferenceFields();
365
366 // Get struct type
367
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 268 assert(spiceStruct->entry != nullptr);
368
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 268 const auto structType = reinterpret_cast<llvm::StructType *>(spiceStruct->entry->getQualType().toLLVMType(sourceFile));
369
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 268 assert(structType != nullptr);
370
371
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 268 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
377 258 std::vector<LLVMExprResult> fieldValueResults;
378
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 258 fieldValueResults.reserve(spiceStruct->fieldTypes.size());
379
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 629 for (const AssignExprNode *fieldValueNode : node->fieldLst->args) {
380
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 371 auto fieldValue = std::any_cast<LLVMExprResult>(visit(fieldValueNode));
381 371 fieldValue.node = fieldValueNode;
382
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 371 fieldValueResults.push_back(fieldValue);
383 371 canBeConstant &= fieldValue.constant != nullptr;
384 }
385
386
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 258 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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 233 llvm::Value *structAddr = insertAlloca(structType);
402 233 const size_t interfaceCount = spiceStruct->interfaceTypes.size();
403 233 const size_t fieldCount = spiceStruct->fieldTypes.size();
404 233 size_t i = 0;
405
406 // Store interface values at their corresponding offsets
407
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 233 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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 524 for (; i < interfaceCount + fieldCount; i++) {
419
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 291 LLVMExprResult &exprResult = fieldValueResults.at(i);
420 // Get field value
421
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 291 llvm::Value *itemValue = fieldTypes.at(i).isRef() ? resolveAddress(exprResult) : resolveValue(exprResult.node, exprResult);
422 // Get field address
423
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 291 llvm::Value *currentFieldAddress = insertStructGEP(structType, structAddr, i);
424 // Store the item value
425
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 291 const bool storeVolatile = exprResult.entry != nullptr && exprResult.entry->isVolatile;
426
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 291 insertStore(itemValue, currentFieldAddress, storeVolatile);
427 }
428
429 // Attach address to anonymous symbol to keep track of de-allocation
430
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 233 SymbolTableEntry *returnSymbol = currentScope->symbolTable.lookupAnonymous(node->codeLoc);
431
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 233 if (returnSymbol != nullptr)
432
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 9 returnSymbol->updateAddress(structAddr);
433
434
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 466 return LLVMExprResult{.ptr = structAddr};
435 }
436 258 }
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
491 // In case of captures, add attribute to captures argument
492
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 8 if (hasCaptures) {
493
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 4 lambda->addParamAttr(0, llvm::Attribute::NoUndef);
494
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 4 lambda->addParamAttr(0, llvm::Attribute::NonNull);
495
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 4 lambda->addDereferenceableParamAttr(0, module->getDataLayout().getPointerSize());
496 }
497
498 // Add debug info
499
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 8 diGenerator.generateFunctionDebugInfo(lambda, &spiceFunc, true);
500
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 8 diGenerator.setSourceLocation(node);
501
502 // Save alloca insert markers
503 8 llvm::BasicBlock *allocaInsertBlockOrig = allocaInsertBlock;
504 8 llvm::Instruction *allocaInsertInstOrig = allocaInsertInst;
505 8 llvm::BasicBlock *bOrig = builder.GetInsertBlock();
506
507 // Create entry block
508
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 8 llvm::BasicBlock *bEntry = createBlock();
509
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 8 switchToBlock(bEntry, lambda);
510
511 // Reset alloca insert markers to this block
512 8 allocaInsertBlock = bEntry;
513 8 allocaInsertInst = nullptr;
514
515 // Declare result variable
516
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 24 SymbolTableEntry *resultEntry = currentScope->lookupStrict(RETURN_VARIABLE_NAME);
517
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 8 assert(resultEntry != nullptr);
518
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 8 llvm::Value *resultAddr = insertAlloca(returnType, RETURN_VARIABLE_NAME);
519
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 8 resultEntry->updateAddress(resultAddr);
520 // Generate debug info
521
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 16 diGenerator.generateLocalVarDebugInfo(RETURN_VARIABLE_NAME, resultAddr);
522
523 // Store function argument values
524 8 llvm::Value *captureStructPtrPtr = nullptr;
525
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 18 for (auto &arg : lambda->args()) {
526 // Get parameter info
527 10 const size_t argNumber = arg.getArgNo();
528
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 10 auto [paramName, paramSymbol] = paramInfoList.at(argNumber);
529 // Allocate space for it
530
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 10 llvm::Type *paramType = funcType->getParamType(argNumber);
531
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 10 llvm::Value *paramAddress = insertAlloca(paramType, paramName);
532 // Update the symbol table entry
533
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 10 const bool isCapturesStruct = hasCaptures && argNumber == 0;
534
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 10 if (isCapturesStruct)
535 4 captureStructPtrPtr = paramAddress;
536 else
537
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 6 paramSymbol->updateAddress(paramAddress);
538 // Store the value at the new address
539
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 10 insertStore(&arg, paramAddress);
540 // Generate debug info
541
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 10 if (!isCapturesStruct)
542
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 6 diGenerator.generateLocalVarDebugInfo(paramName, paramAddress, argNumber + 1);
543 10 }
544
545 // Store the default values for optional function args
546
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 8 if (node->paramLst) {
547
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 4 const std::vector<DeclStmtNode *> params = node->paramLst->params;
548
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 4 for (; argIdx < params.size(); argIdx++)
549 ✗ visit(params.at(argIdx));
550 4 }
551
552 // Extract captures from captures struct
553
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 8 if (hasCaptures) {
554
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 4 assert(!paramInfoList.empty());
555
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 4 unpackCapturesToLocalVariables(captures, captureStructPtrPtr, capturesStructType);
556 }
557
558 // Visit body
559
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 8 visit(node->body);
560
561 // Create return statement if the block is not terminated yet
562
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 8 if (!blockAlreadyTerminated) {
563 ✗ llvm::Value *result = insertLoad(returnType, resultEntry->getAddress());
564 ✗ builder.CreateRet(result);
565 }
566
567 // Pop capture addresses
568
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 8 if (hasCaptures)
569
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 10 for (const auto &capture : captures | std::views::values)
570
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 6 capture.capturedSymbol->popAddress();
571
572 // Conclude debug info for function
573
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 8 diGenerator.concludeFunctionDebugInfo();
574
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 8 diGenerator.setSourceLocation(node);
575
576 // Restore alloca insert markers
577
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 8 builder.SetInsertPoint(bOrig);
578 8 blockAlreadyTerminated = false;
579 8 allocaInsertBlock = allocaInsertBlockOrig;
580 8 allocaInsertInst = allocaInsertInstOrig;
581
582 // Change back to original scope
583 8 currentScope = currentScope->parent;
584
585 // Verify function
586
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 8 verifyFunction(lambda, node->codeLoc);
587
588 // Captures, create a struct { <fct-ptr>, <capture struct ptr> }
589
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 8 llvm::Value *result = buildFatFctPtr(bodyScope, capturesStructType, lambda);
590
591
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 16 return LLVMExprResult{.ptr = result, .node = node};
592 8 }
593
594 26 std::any IRGenerator::visitLambdaProc(const LambdaProcNode *node) {
595
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 26 Function spiceFunc = node->manifestations.at(manIdx);
596 26 ParamInfoList paramInfoList;
597 26 std::vector<llvm::Type *> paramTypes;
598
599 // Change scope
600
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 26 Scope *bodyScope = currentScope = currentScope->getChildScope(node->getScopeId());
601
602 // If there are captures, we pass them in a struct as the first function argument
603 26 const CaptureMap &captures = bodyScope->symbolTable.captures;
604 26 const bool hasCaptures = !captures.empty();
605 26 llvm::Type *capturesStructType = nullptr;
606
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 26 if (hasCaptures) {
607 // Create captures struct type
608
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 11 capturesStructType = buildCapturesContainerType(captures);
609 // Add the captures struct as first parameter
610
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 11 paramInfoList.emplace_back(CAPTURES_PARAM_NAME, nullptr);
611
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 11 paramTypes.push_back(builder.getPtrTy()); // The captures struct is always passed as pointer
612 }
613
614 // Visit parameters
615 26 size_t argIdx = 0;
616
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 26 if (node->hasParams) {
617 5 const size_t numOfParams = spiceFunc.paramList.size();
618
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 5 paramInfoList.reserve(numOfParams);
619
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 5 paramTypes.reserve(numOfParams);
620
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 12 for (; argIdx < numOfParams; argIdx++) {
621
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 7 const DeclStmtNode *param = node->paramLst->params.at(argIdx);
622 // Get symbol table entry of param
623
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 7 SymbolTableEntry *paramSymbol = currentScope->lookupStrict(param->varName);
624
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 7 assert(paramSymbol != nullptr);
625 // Retrieve type of param
626
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 7 llvm::Type *paramType = spiceFunc.getParamTypes().at(argIdx).toLLVMType(sourceFile);
627 // Add it to the lists
628
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 7 paramInfoList.emplace_back(param->varName, paramSymbol);
629
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 7 paramTypes.push_back(paramType);
630 }
631 }
632
633 // Create function or implement declared function
634
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 26 spiceFunc.mangleSuffix = "." + std::to_string(manIdx);
635
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 26 const std::string mangledName = spiceFunc.getMangledName();
636
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 26 llvm::FunctionType *funcType = llvm::FunctionType::get(builder.getVoidTy(), paramTypes, false);
637
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 26 module->getOrInsertFunction(mangledName, funcType);
638
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 26 llvm::Function *lambda = module->getFunction(mangledName);
639
640 // Set attributes to function
641 26 lambda->setDSOLocal(true);
642
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 26 lambda->setLinkage(llvm::Function::PrivateLinkage);
643
644 // In case of captures, add attribute to captures argument
645
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 26 if (hasCaptures) {
646
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 11 lambda->addParamAttr(0, llvm::Attribute::NoUndef);
647
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 11 lambda->addParamAttr(0, llvm::Attribute::NonNull);
648
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 11 lambda->addDereferenceableParamAttr(0, module->getDataLayout().getPointerSize());
649 }
650
651 // Add debug info
652
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 26 diGenerator.generateFunctionDebugInfo(lambda, &spiceFunc, true);
653
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 26 diGenerator.setSourceLocation(node);
654
655 // Save alloca insert markers
656 26 llvm::BasicBlock *allocaInsertBlockOrig = allocaInsertBlock;
657 26 llvm::Instruction *allocaInsertInstOrig = allocaInsertInst;
658 26 llvm::BasicBlock *bOrig = builder.GetInsertBlock();
659
660 // Create entry block
661
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 26 llvm::BasicBlock *bEntry = createBlock();
662
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 26 switchToBlock(bEntry, lambda);
663
664 // Reset alloca insert markers to this block
665 26 allocaInsertBlock = bEntry;
666 26 allocaInsertInst = nullptr;
667
668 // Save values of parameters to locals
669 26 llvm::Value *captureStructPtrPtr = nullptr;
670
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 44 for (auto &arg : lambda->args()) {
671 // Get information about the parameter
672 18 const size_t argNumber = arg.getArgNo();
673
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 18 auto [paramName, paramSymbol] = paramInfoList.at(argNumber);
674 // Allocate space for it
675
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 18 llvm::Type *paramType = funcType->getParamType(argNumber);
676
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 18 llvm::Value *paramAddress = insertAlloca(paramType, paramName);
677 // Update the symbol table entry
678
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 18 const bool isCapturesStruct = hasCaptures && argNumber == 0;
679
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 18 if (isCapturesStruct)
680 11 captureStructPtrPtr = paramAddress;
681 else
682
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 7 paramSymbol->updateAddress(paramAddress);
683 // Store the value at the new address
684
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 18 insertStore(&arg, paramAddress);
685 // Generate debug info
686
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 18 if (!isCapturesStruct)
687
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 7 diGenerator.generateLocalVarDebugInfo(paramName, paramAddress, argNumber + 1);
688 18 }
689
690 // Store the default values for optional function args
691
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 26 if (node->paramLst) {
692
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 5 const std::vector<DeclStmtNode *> params = node->paramLst->params;
693
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 5 for (; argIdx < params.size(); argIdx++)
694 ✗ visit(params.at(argIdx));
695 5 }
696
697 // Extract captures from captures struct
698
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 26 if (hasCaptures) {
699
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 11 assert(!paramInfoList.empty());
700
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 11 unpackCapturesToLocalVariables(captures, captureStructPtrPtr, capturesStructType);
701 }
702
703 // Visit body
704
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 26 visit(node->body);
705
706 // Create return statement if the block is not terminated yet
707
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 26 if (!blockAlreadyTerminated)
708
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 26 builder.CreateRetVoid();
709
710 // Pop capture addresses
711
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 26 if (hasCaptures)
712
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 29 for (const auto &capture : captures | std::views::values)
713
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 18 capture.capturedSymbol->popAddress();
714
715 // Conclude debug info for function
716
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 26 diGenerator.concludeFunctionDebugInfo();
717
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 26 diGenerator.setSourceLocation(node);
718
719 // Restore alloca insert markers
720
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 26 builder.SetInsertPoint(bOrig);
721 26 blockAlreadyTerminated = false;
722 26 allocaInsertBlock = allocaInsertBlockOrig;
723 26 allocaInsertInst = allocaInsertInstOrig;
724
725 // Change back to original scope
726 26 currentScope = currentScope->parent;
727
728 // Verify function
729
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 26 verifyFunction(lambda, node->codeLoc);
730
731 // Create a struct { <fct-ptr>, <capture struct ptr> }
732
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 26 llvm::Value *result = buildFatFctPtr(bodyScope, capturesStructType, lambda);
733
734
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 52 return LLVMExprResult{.ptr = result, .node = node};
735 26 }
736
737 1 std::any IRGenerator::visitLambdaExpr(const LambdaExprNode *node) {
738
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 1 const Function &spiceFunc = node->manifestations.at(manIdx);
739 1 ParamInfoList paramInfoList;
740 1 std::vector<llvm::Type *> paramTypes;
741
742 // Change scope
743
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 1 Scope *bodyScope = currentScope = currentScope->getChildScope(node->getScopeId());
744
745 // If there are captures, we pass them in a struct as the first function argument
746 1 const CaptureMap &captures = bodyScope->symbolTable.captures;
747 1 const bool hasCaptures = !captures.empty();
748 1 llvm::Type *capturesStructType = nullptr;
749
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 1 if (hasCaptures) {
750 // Create captures struct type
751 ✗ capturesStructType = buildCapturesContainerType(captures);
752 // Add the captures struct as first parameter
753 ✗ paramInfoList.emplace_back(CAPTURES_PARAM_NAME, nullptr);
754 ✗ paramTypes.push_back(builder.getPtrTy()); // The capture struct is always passed as pointer
755 }
756
757 // Visit parameters
758 1 size_t argIdx = 0;
759
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 1 if (node->hasParams) {
760 1 const size_t numOfParams = spiceFunc.paramList.size();
761
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 1 paramInfoList.reserve(numOfParams);
762
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 1 paramTypes.reserve(numOfParams);
763
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 3 for (; argIdx < numOfParams; argIdx++) {
764
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 2 const DeclStmtNode *param = node->paramLst->params.at(argIdx);
765 // Get symbol table entry of param
766
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 2 SymbolTableEntry *paramSymbol = currentScope->lookupStrict(param->varName);
767
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 2 assert(paramSymbol != nullptr);
768 // Retrieve type of param
769
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 2 llvm::Type *paramType = spiceFunc.getParamTypes().at(argIdx).toLLVMType(sourceFile);
770 // Add it to the lists
771
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 2 paramInfoList.emplace_back(param->varName, paramSymbol);
772
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 2 paramTypes.push_back(paramType);
773 }
774 }
775
776 // Get return type
777
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 1 llvm::Type *returnType = builder.getVoidTy();
778
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 1 if (spiceFunc.isFunction())
779
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 1 returnType = spiceFunc.returnType.toLLVMType(sourceFile);
780
781 // Create function or implement declared function
782
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 1 const std::string mangledName = spiceFunc.getMangledName();
783
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 1 llvm::FunctionType *funcType = llvm::FunctionType::get(returnType, paramTypes, false);
784
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 1 module->getOrInsertFunction(mangledName, funcType);
785
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 1 llvm::Function *lambda = module->getFunction(mangledName);
786
787 // Set attributes to function
788 1 lambda->setDSOLocal(true);
789
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 1 lambda->setLinkage(llvm::Function::PrivateLinkage);
790
791 // In case of captures, add attribute to captures argument
792
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 1 if (hasCaptures) {
793 ✗ lambda->addParamAttr(0, llvm::Attribute::NoUndef);
794 ✗ lambda->addParamAttr(0, llvm::Attribute::NonNull);
795 ✗ lambda->addDereferenceableParamAttr(0, module->getDataLayout().getPointerSize());
796 }
797
798 // Add debug info
799
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 1 diGenerator.generateFunctionDebugInfo(lambda, &spiceFunc, true);
800
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 1 diGenerator.setSourceLocation(node);
801
802 // Save alloca insert markers
803 1 llvm::BasicBlock *allocaInsertBlockOrig = allocaInsertBlock;
804 1 llvm::Instruction *allocaInsertInstOrig = allocaInsertInst;
805 1 llvm::BasicBlock *bOrig = builder.GetInsertBlock();
806
807 // Create entry block
808
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 1 llvm::BasicBlock *bEntry = createBlock();
809
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 1 switchToBlock(bEntry, lambda);
810
811 // Reset alloca insert markers to this block
812 1 allocaInsertBlock = bEntry;
813 1 allocaInsertInst = nullptr;
814
815 // Save values of parameters to locals
816 1 llvm::Value *captureStructPtrPtr = nullptr;
817
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 3 for (auto &arg : lambda->args()) {
818 // Get information about the parameter
819 2 const size_t argNumber = arg.getArgNo();
820
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 2 auto [paramName, paramSymbol] = paramInfoList.at(argNumber);
821 // Allocate space for it
822
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 2 llvm::Type *paramType = funcType->getParamType(argNumber);
823
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 2 llvm::Value *paramAddress = insertAlloca(paramType, paramName);
824 // Update the symbol table entry
825
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 2 const bool isCapturesStruct = hasCaptures && argNumber == 0;
826
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 2 if (isCapturesStruct)
827 ✗ captureStructPtrPtr = paramAddress;
828 else
829
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 2 paramSymbol->updateAddress(paramAddress);
830 // Store the value at the new address
831
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 2 insertStore(&arg, paramAddress);
832 // Generate debug info
833
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 2 if (!isCapturesStruct)
834
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 2 diGenerator.generateLocalVarDebugInfo(paramName, paramAddress, argNumber + 1);
835 2 }
836
837 // Store the default values for optional function args
838
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 1 if (node->paramLst) {
839
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 1 const std::vector<DeclStmtNode *> params = node->paramLst->params;
840
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 1 for (; argIdx < params.size(); argIdx++)
841 ✗ visit(params.at(argIdx));
842 1 }
843
844 // Extract captures from captures struct
845
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 1 if (hasCaptures) {
846 ✗ assert(!paramInfoList.empty());
847 ✗ unpackCapturesToLocalVariables(captures, captureStructPtrPtr, capturesStructType);
848 }
849
850 // Visit lambda expression
851
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 1 llvm::Value *exprResult = resolveValue(node->lambdaExpr);
852
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 1 builder.CreateRet(exprResult);
853
854 // Pop capture addresses
855
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 1 if (hasCaptures)
856 ✗ for (const auto &val : captures | std::views::values)
857 ✗ val.capturedSymbol->popAddress();
858
859 // Conclude debug info for function
860
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 1 diGenerator.concludeFunctionDebugInfo();
861
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 1 diGenerator.setSourceLocation(node);
862
863 // Restore alloca insert markers
864
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 1 builder.SetInsertPoint(bOrig);
865 1 blockAlreadyTerminated = false;
866 1 allocaInsertBlock = allocaInsertBlockOrig;
867 1 allocaInsertInst = allocaInsertInstOrig;
868
869 // Change back to original scope
870 1 currentScope = currentScope->parent;
871
872 // Verify function
873
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 1 verifyFunction(lambda, node->codeLoc);
874 // Create a struct { <fct-ptr>, <capture struct ptr> }
875
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 1 llvm::Value *result = buildFatFctPtr(bodyScope, capturesStructType, lambda);
876
877
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 2 return LLVMExprResult{.ptr = result, .node = node};
878 1 }
879
880 1862 std::any IRGenerator::visitDataType(const DataTypeNode *node) {
881 // Only set the source location if this is not the root scope
882
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 1862 if (currentScope != rootScope && !node->isParamType && !node->isReturnType && !node->isFieldType)
883
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 1119 diGenerator.setSourceLocation(node);
884 // Retrieve symbol type
885
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 1862 const QualType symbolType = node->getEvaluatedSymbolType(manIdx);
886
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 1862 assert(!symbolType.is(TY_DYN)); // Symbol type should not be dyn anymore at this point
887
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 1862 return symbolType.toLLVMType(sourceFile);
888 }
889
890 39 llvm::Value *IRGenerator::buildFatFctPtr(Scope *bodyScope, llvm::Type *capturesStructType, llvm::Value *lambda) {
891 // Create capture struct if required
892 39 llvm::Value *capturesPtr = nullptr;
893
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 39 if (capturesStructType != nullptr) {
894
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 15 assert(bodyScope != nullptr);
895 // If we have a single capture of ptr type, we can directly store it into the fat ptr. Otherwise, we need a stack allocated
896 // struct to store the captures in a memory-efficient manner and store a pointer to that struct to the fat ptr.
897
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 15 if (capturesStructType->isPointerTy()) {
898 6 const CaptureMap &captures = bodyScope->symbolTable.captures;
899
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 6 assert(captures.size() == 1);
900 6 const Capture &capture = captures.begin()->second;
901
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 6 if (capture.getMode() == BY_VALUE) {
902 1 llvm::Type *varType = capture.capturedSymbol->getQualType().toLLVMType(sourceFile);
903
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 2 capturesPtr = insertLoad(varType, capture.capturedSymbol->getAddress());
904 } else {
905 5 capturesPtr = capture.capturedSymbol->getAddress();
906 }
907 } else {
908
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 9 capturesPtr = insertAlloca(capturesStructType, CAPTURES_PARAM_NAME);
909 9 size_t captureIdx = 0;
910
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 27 for (const auto &capture : bodyScope->symbolTable.captures | std::views::values) {
911 18 const SymbolTableEntry *capturedEntry = capture.capturedSymbol;
912 // Get address or value of captured variable, depending on the capturing mode
913
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 18 llvm::Value *capturedValue = capturedEntry->getAddress();
914
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 18 assert(capturedValue != nullptr);
915
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 18 if (capture.getMode() == BY_VALUE) {
916
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 15 llvm::Type *captureType = capturedEntry->getQualType().toLLVMType(sourceFile);
917
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 30 capturedValue = insertLoad(captureType, capturedValue);
918 }
919 // Store it in the capture struct
920
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 18 llvm::Value *captureAddress = insertStructGEP(capturesStructType, capturesPtr, captureIdx);
921
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 18 insertStore(capturedValue, captureAddress);
922 18 captureIdx++;
923 }
924 }
925 }
926
927 // Create fat ptr struct type if not exists yet
928
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 39 if (!llvmTypes.fatPtrType)
929
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 18 llvmTypes.fatPtrType = llvm::StructType::get(context, {builder.getPtrTy(), builder.getPtrTy()});
930
931 // Create fat pointer
932
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 78 llvm::Value *fatFctPtr = insertAlloca(llvmTypes.fatPtrType, "fat.ptr");
933
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 39 llvm::Value *fctPtr = insertStructGEP(llvmTypes.fatPtrType, fatFctPtr, 0);
934 39 insertStore(lambda, fctPtr);
935
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 39 llvm::Value *capturePtr = insertStructGEP(llvmTypes.fatPtrType, fatFctPtr, 1);
936
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 39 insertStore(capturesPtr != nullptr ? capturesPtr : llvm::PoisonValue::get(builder.getPtrTy()), capturePtr);
937
938 39 return fatFctPtr;
939 }
940
941 15 llvm::Type *IRGenerator::buildCapturesContainerType(const CaptureMap &captures) const {
942
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 15 assert(!captures.empty());
943
944 // If we have only one capture that is a ptr, we can just use that ptr type
945 15 const Capture &capture = captures.begin()->second;
946
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 15 if (captures.size() == 1 && (capture.capturedSymbol->getQualType().isPtr() || capture.getMode() == BY_REFERENCE))
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 6 return builder.getPtrTy();
948
949 // Create captures struct type
950 9 std::vector<llvm::Type *> captureTypes;
951
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 27 for (const auto &c : captures | std::views::values) {
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 18 if (c.getMode() == BY_VALUE)
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 15 captureTypes.push_back(c.capturedSymbol->getQualType().toLLVMType(sourceFile));
954 else
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 3 captureTypes.push_back(builder.getPtrTy());
956 }
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 9 return llvm::StructType::get(context, captureTypes);
958 9 }
959
960 15 void IRGenerator::unpackCapturesToLocalVariables(const CaptureMap &captures, llvm::Value *val, llvm::Type *structType) {
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 15 assert(!captures.empty());
962 // If we have only one capture that is a ptr, we can just load the ptr
963 15 const Capture &capture = captures.begin()->second;
964
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 15 if (captures.size() == 1 && (capture.capturedSymbol->getQualType().isPtr() || capture.getMode() == BY_REFERENCE)) {
965 // Interpret capturesPtr as ptr to the first and only capture
966 6 llvm::Value *captureAddress = val;
967 6 capture.capturedSymbol->pushAddress(captureAddress);
968 // Generate debug info
969
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 6 diGenerator.generateLocalVarDebugInfo(capture.getName(), captureAddress);
970 } else {
971 // Interpret capturesPtr as ptr to the captures struct
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 9 llvm::Value *capturesPtr = insertLoad(builder.getPtrTy(), val);
973
974 9 size_t captureIdx = 0;
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 27 for (const auto &[name, c] : captures) {
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 18 const std::string valueName = c.getMode() == BY_REFERENCE ? name + ".addr" : name;
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 18 llvm::Value *captureAddress = insertStructGEP(structType, capturesPtr, captureIdx, valueName);
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 18 c.capturedSymbol->pushAddress(captureAddress);
979 // Generate debug info
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 18 diGenerator.generateLocalVarDebugInfo(c.getName(), captureAddress);
981 18 captureIdx++;
982 18 }
983 }
984 15 }
985
986 } // namespace spice::compiler
987