GCC Code Coverage Report

Directory: ../
Coverage: low: ≥ 0% medium: ≥ 75.0% high: ≥ 90.0%
Coverage Exec / Excl / Total
Lines: 86.6% 251 / 1 / 291
Functions: 92.3% 12 / 0 / 13
Branches: 50.0% 276 / 4 / 556
src/irgenerator/DebugInfoGenerator.cpp
Line Branch Exec Source
1 // Copyright (c) 2021-2026 ChilliBits. All rights reserved.
2
3 #include "DebugInfoGenerator.h"
4
5 #include <driver/Driver.h>
6 #include <irgenerator/IRGenerator.h>
7 #include <irgenerator/NameMangling.h>
8 #include <model/Function.h>
9 #include <model/Struct.h>
10 #include <util/CustomHashFunctions.h>
11 #include <util/FileUtil.h>
12
13 #include <llvm/BinaryFormat/Dwarf.h>
14 #include <llvm/IR/Module.h>
15
16 namespace spice::compiler {
17
18
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 2562 DebugInfoGenerator::DebugInfoGenerator(IRGenerator *irGenerator) : irGenerator(irGenerator) {}
19
20 59 void DebugInfoGenerator::initialize(const std::string &sourceFileName, std::filesystem::path sourceFileDir) {
21 59 llvm::Module *module = irGenerator->module;
22 59 llvm::LLVMContext &context = irGenerator->context;
23
24 // Create DIBuilder
25
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 59 diBuilder = std::make_unique<llvm::DIBuilder>(*module);
26
27 // Create compilation unit
28
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 59 std::filesystem::path absolutePath = absolute(sourceFileDir / sourceFileName);
29 59 absolutePath.make_preferred();
30 59 sourceFileDir.make_preferred();
31
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 118 llvm::DIFile *cuDiFile = diBuilder->createFile(absolutePath.string(), sourceFileDir.string());
32
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 118 compileUnit = diBuilder->createCompileUnit(
33
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 59 llvm::dwarf::DW_LANG_C_plus_plus_14, cuDiFile, PRODUCER_STRING, irGenerator->cliOptions.optLevel > OptLevel::O0, "", 0, "",
34 llvm::DICompileUnit::FullDebug, 0, false, false, llvm::DICompileUnit::DebugNameTableKind::None);
35
36
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 59 module->addModuleFlag(llvm::Module::Max, "Dwarf Version", 5);
37
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 59 module->addModuleFlag(llvm::Module::Warning, "Debug Info Version", llvm::DEBUG_METADATA_VERSION);
38
39 // Create another DIFile as scope for subprograms
40
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 118 diFile = diBuilder->createFile(sourceFileName, sourceFileDir.string());
41
42
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 59 pointerWidth = irGenerator->module->getDataLayout().getPointerSizeInBits();
43
44 // Initialize primitive debug types
45
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 59 doubleTy = diBuilder->createBasicType("double", 64, llvm::dwarf::DW_ATE_float);
46
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 59 intTy = diBuilder->createBasicType("int", 32, llvm::dwarf::DW_ATE_signed);
47
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 59 uIntTy = diBuilder->createBasicType("unsigned int", 32, llvm::dwarf::DW_ATE_unsigned);
48
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 59 shortTy = diBuilder->createBasicType("short", 16, llvm::dwarf::DW_ATE_signed);
49
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 59 uShortTy = diBuilder->createBasicType("unsigned short", 16, llvm::dwarf::DW_ATE_unsigned);
50
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 59 longTy = diBuilder->createBasicType("long", 64, llvm::dwarf::DW_ATE_signed);
51
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 59 uLongTy = diBuilder->createBasicType("unsigned long", 64, llvm::dwarf::DW_ATE_unsigned);
52
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 59 byteTy = diBuilder->createBasicType("byte", 8, llvm::dwarf::DW_ATE_unsigned);
53
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 59 charTy = diBuilder->createBasicType("char", 8, llvm::dwarf::DW_ATE_unsigned_char);
54
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 118 stringTy = diBuilder->createPointerType(charTy, pointerWidth);
55
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 59 boolTy = diBuilder->createBasicType("bool", 8, llvm::dwarf::DW_ATE_boolean);
56
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 59 voidTy = diBuilder->createBasicType("void", 0, llvm::dwarf::DW_ATE_unsigned);
57
58 // Initialize lambda fat ptr type
59
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 59 llvm::PointerType *ptrTy = irGenerator->builder.getPtrTy();
60
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 59 llvm::IntegerType *int64Ty = irGenerator->builder.getInt64Ty();
61 59 const llvm::DataLayout &dataLayout = module->getDataLayout();
62
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 59 const llvm::StructLayout *structLayout = dataLayout.getStructLayout(irGenerator->llvmTypes.lambdaFatPtrType);
63
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 59 const uint32_t alignInBits = dataLayout.getABITypeAlign(irGenerator->llvmTypes.lambdaFatPtrType).value();
64
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 59 const uint32_t ptrAlignInBits = dataLayout.getABITypeAlign(ptrTy).value();
65
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 59 const uint32_t int64Width = dataLayout.getTypeSizeInBits(int64Ty);
66
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 59 const uint32_t int64AlignInBits = dataLayout.getABITypeAlign(int64Ty).value();
67
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 59 const uint64_t fctPtrOffset = structLayout->getElementOffsetInBits(0);
68
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 59 const uint64_t capturesOffset = structLayout->getElementOffsetInBits(1);
69
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 59 const uint64_t captureSizeOffset = structLayout->getElementOffsetInBits(2);
70
71
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 118 llvm::DIType *voidPtrDIType = diBuilder->createPointerType(voidTy, pointerWidth, ptrAlignInBits);
72
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 118 fatPtrTy = diBuilder->createStructType(diFile, "_lambda", diFile, 0, structLayout->getSizeInBits(), alignInBits,
73 llvm::DINode::FlagTypePassByValue | llvm::DINode::FlagNonTrivial, nullptr, {}, 0,
74
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 59 nullptr, "_lambda");
75
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 59 const auto firstType = diBuilder->createMemberType(fatPtrTy, "fct", diFile, 0, pointerWidth, ptrAlignInBits, fctPtrOffset,
76 llvm::DINode::FlagZero, voidPtrDIType);
77
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 59 const auto secondType = diBuilder->createMemberType(fatPtrTy, "captures", diFile, 0, pointerWidth, ptrAlignInBits,
78 capturesOffset, llvm::DINode::FlagZero, voidPtrDIType);
79
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 59 const auto thirdType = diBuilder->createMemberType(fatPtrTy, "captureSize", diFile, 0, int64Width, int64AlignInBits,
80 captureSizeOffset, llvm::DINode::FlagZero, uLongTy);
81
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 59 fatPtrTy->replaceElements(llvm::MDTuple::get(context, {firstType, secondType, thirdType}));
82 59 }
83
84 40974 void DebugInfoGenerator::generateFunctionDebugInfo(llvm::Function *llvmFunction, const Function *spiceFunc, bool isLambda) {
85
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 40974 if (!irGenerator->cliOptions.instrumentation.generateDebugInfo)
86 40091 return;
87
88 883 const ASTNode *node = spiceFunc->declNode;
89
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 883 const uint32_t lineNo = spiceFunc->getDeclCodeLoc().line;
90
91 // Prepare flags
92 883 llvm::DIScope *scope = diFile;
93 883 llvm::DINode::DIFlags flags = llvm::DINode::FlagPrototyped;
94
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 883 if (spiceFunc->entry && spiceFunc->entry->getQualType().isPublic())
95
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 773 flags |= llvm::DINode::FlagPublic;
96
97 // Prepare spFlags
98 883 llvm::DISubprogram::DISPFlags spFlags = llvm::DISubprogram::SPFlagDefinition;
99
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 883 if (isLambda)
100 ✗ spFlags |= llvm::DISubprogram::SPFlagLocalToUnit;
101
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 883 if (spiceFunc->isVirtual) {
102
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 106 if (spiceFunc->thisType.is(TY_INTERFACE))
103 ✗ spFlags |= llvm::DISubprogram::SPFlagPureVirtual;
104 else
105
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 106 spFlags |= llvm::DISubprogram::SPFlagVirtual;
106 }
107
108 // Collect arguments
109
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 883 std::vector<llvm::Metadata *> argTypes;
110
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 883 if (spiceFunc->isProcedure())
111
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 398 argTypes.push_back(voidTy);
112 else
113
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 485 argTypes.push_back(getDITypeForQualType(node, spiceFunc->returnType)); // Add result type
114
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 883 if (spiceFunc->isMethod())
115
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 627 argTypes.push_back(getDITypeForQualType(node, spiceFunc->thisType)); // Add this type
116
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 883 if (isLambda) {
117 ✗ llvm::DICompositeType *captureStructType = generateCaptureStructDebugInfo(spiceFunc);
118 ✗ scope = captureStructType;
119 ✗ llvm::DIType *captureStructPtr = diBuilder->createPointerType(captureStructType, pointerWidth);
120 ✗ argTypes.push_back(captureStructPtr); // Add this type
121 }
122
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 2511 for (const QualType &argType : spiceFunc->getParamTypes()) // Add arg types
123
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 1628 argTypes.push_back(getDITypeForQualType(node, argType));
124
125 // Create function type
126
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 883 llvm::DISubroutineType *functionTy = diBuilder->createSubroutineType(diBuilder->getOrCreateTypeArray(argTypes));
127
128
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 883 const std::string mangledName = spiceFunc->getMangledName();
129 llvm::DISubprogram *subprogram;
130
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 883 const std::string &name = spiceFunc->name;
131
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 883 if (spiceFunc->isMethod()) {
132
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 627 subprogram = diBuilder->createMethod(scope, name, mangledName, diFile, lineNo, functionTy, 0, 0, nullptr, flags, spFlags);
133 } else {
134
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 512 subprogram = diBuilder->createFunction(scope, name, mangledName, diFile, lineNo, functionTy, lineNo, flags, spFlags);
135 }
136
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 883 subprogram->replaceRetainedNodes({});
137
138 // Add debug info to LLVM function
139
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 883 llvmFunction->setSubprogram(subprogram);
140 // Add scope to lexicalBlocks
141
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 883 lexicalBlocks.push(subprogram);
142 883 }
143
144 41417 void DebugInfoGenerator::concludeFunctionDebugInfo() {
145
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 41417 if (!irGenerator->cliOptions.instrumentation.generateDebugInfo)
146 40534 return;
147
148
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 883 assert(!lexicalBlocks.empty());
149 883 lexicalBlocks.pop();
150 }
151
152 37781 void DebugInfoGenerator::pushLexicalBlock(const ASTNode *node) {
153
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 37781 if (!irGenerator->cliOptions.instrumentation.generateDebugInfo)
154 36885 return;
155
156 896 const uint32_t line = node->codeLoc.line;
157 896 const uint32_t col = node->codeLoc.col;
158 896 llvm::DILexicalBlock *lexicalBlock = diBuilder->createLexicalBlock(lexicalBlocks.top(), diFile, line, col);
159
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 896 lexicalBlocks.push(lexicalBlock);
160 }
161
162 37781 void DebugInfoGenerator::popLexicalBlock() {
163
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 37781 if (!irGenerator->cliOptions.instrumentation.generateDebugInfo)
164 36885 return;
165
166
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 896 assert(!lexicalBlocks.empty());
167 896 lexicalBlocks.pop();
168 }
169
170 ✗ llvm::DICompositeType *DebugInfoGenerator::generateCaptureStructDebugInfo(const Function *spiceFunc) {
171 ✗ const CaptureMap &captures = spiceFunc->bodyScope->symbolTable.captures;
172 ✗ const ASTNode *node = spiceFunc->declNode;
173 ✗ const uint32_t lineNo = node->codeLoc.line;
174
175 // Get LLVM type for struct
176 ✗ std::vector<llvm::Type *> fieldTypes;
177 ✗ std::vector<const SymbolTableEntry *> fieldEntries;
178 ✗ QualTypeList fieldSymbolTypes;
179 ✗ for (const auto &capture : captures | std::views::values) {
180 ✗ QualType captureType = capture.capturedSymbol->getQualType();
181
182 // Capture by reference
183 ✗ if (capture.getMode() == BY_REFERENCE)
184 ✗ captureType = captureType.toRef(node);
185
186 ✗ fieldEntries.push_back(capture.capturedSymbol);
187 ✗ fieldSymbolTypes.push_back(captureType);
188 ✗ fieldTypes.push_back(captureType.toLLVMType(irGenerator->sourceFile));
189 }
190 ✗ llvm::StructType *structType = llvm::StructType::get(irGenerator->context, fieldTypes);
191 ✗ const llvm::StructLayout *structLayout = irGenerator->module->getDataLayout().getStructLayout(structType);
192 ✗ const size_t alignInBits = irGenerator->module->getDataLayout().getABITypeAlign(structType).value();
193
194 ✗ llvm::DIScope *scope = lexicalBlocks.top();
195 llvm::DICompositeType *structDiType =
196 ✗ diBuilder->createClassType(scope, "", diFile, lineNo, structLayout->getSizeInBits(), alignInBits, 0,
197 llvm::DINode::FlagTypePassByValue | llvm::DINode::FlagNonTrivial, nullptr, {});
198
199 ✗ std::vector<llvm::Metadata *> fieldDITypes;
200 ✗ for (size_t i = 0; i < fieldEntries.size(); i++) {
201 ✗ llvm::DIType *fieldDiType = getDITypeForQualType(node, fieldSymbolTypes.at(i));
202 ✗ const std::string &fieldName = fieldEntries.at(i)->name;
203 ✗ const size_t offsetInBits = structLayout->getElementOffsetInBits(i);
204 ✗ const size_t fieldSize = fieldDiType->getSizeInBits();
205 ✗ const size_t fieldAlign = fieldDiType->getAlignInBits();
206 ✗ llvm::DIDerivedType *fieldDiDerivedType = diBuilder->createMemberType(
207 ✗ structDiType, fieldName, diFile, lineNo, fieldSize, fieldAlign, offsetInBits, llvm::DINode::FlagZero, fieldDiType);
208 ✗ fieldDITypes.push_back(fieldDiDerivedType);
209 }
210 ✗ structDiType->replaceElements(llvm::MDTuple::get(irGenerator->context, fieldDITypes));
211
212 ✗ return structDiType;
213 ✗ }
214
215 2711 void DebugInfoGenerator::generateGlobalVarDebugInfo(llvm::GlobalVariable *global, const SymbolTableEntry *globalEntry) {
216
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 2711 if (!irGenerator->cliOptions.instrumentation.generateDebugInfo)
217 2684 return;
218
219
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 27 const uint32_t lineNo = globalEntry->getDeclCodeLoc().line;
220
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 27 const llvm::StringRef name = global->getName();
221
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 27 llvm::DIType *type = getDITypeForQualType(globalEntry->declNode, globalEntry->getQualType());
222
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 27 const bool isLocal = globalEntry->getQualType().isPublic();
223
224
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 27 global->addDebugInfo(diBuilder->createGlobalVariableExpression(compileUnit, name, name, diFile, lineNo, type, isLocal));
225 }
226
227 135 void DebugInfoGenerator::generateGlobalStringDebugInfo(llvm::GlobalVariable *global, const std::string &name, size_t length,
228 const CodeLoc &codeLoc) const {
229 135 const uint32_t lineNo = codeLoc.line;
230 135 const size_t sizeInBits = (length + 1) * 8; // +1 because of null-terminator
231
232
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 135 llvm::DIStringType *stringType = diBuilder->createStringType(name, sizeInBits);
233
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 135 global->addDebugInfo(diBuilder->createGlobalVariableExpression(compileUnit, name, name, diFile, lineNo, stringType, true));
234 135 }
235
236 126762 void DebugInfoGenerator::generateLocalVarDebugInfo(const std::string &varName, llvm::Value *address, size_t argNumber) {
237
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 126762 if (!irGenerator->cliOptions.instrumentation.generateDebugInfo)
238 124267 return;
239
240 // Get symbol table entry
241 2495 const SymbolTableEntry *variableEntry = irGenerator->currentScope->lookupStrict(varName);
242
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 2495 assert(variableEntry != nullptr);
243 // Build debug info
244 2495 llvm::DIScope *scope = lexicalBlocks.top();
245 2495 llvm::DIType *diType = getDITypeForQualType(variableEntry->declNode, variableEntry->getQualType());
246 2495 const uint32_t lineNo = variableEntry->declNode->codeLoc.line;
247
248 llvm::DILocalVariable *varInfo;
249
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 2495 if (argNumber != SIZE_MAX)
250
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 1371 varInfo = diBuilder->createParameterVariable(scope, varName, argNumber, diFile, lineNo, diType);
251 else
252
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 1124 varInfo = diBuilder->createAutoVariable(scope, varName, diFile, lineNo, diType);
253
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 2495 llvm::DIExpression *expr = diBuilder->createExpression();
254
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 2495 const llvm::DILocation *debugLocation = irGenerator->builder.getCurrentDebugLocation();
255
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 2495 assert(debugLocation != nullptr);
256
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 2495 diBuilder->insertDeclare(address, varInfo, expr, debugLocation, irGenerator->builder.GetInsertPoint());
257 }
258
259 932954 void DebugInfoGenerator::setSourceLocation(const CodeLoc &codeLoc) {
260
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 932954 if (!irGenerator->cliOptions.instrumentation.generateDebugInfo)
261 912672 return;
262
263
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 20282 assert(!lexicalBlocks.empty());
264 20282 llvm::DIScope *scope = lexicalBlocks.top();
265 20282 const llvm::DILocation *diCodeLoc = llvm::DILocation::get(scope->getContext(), codeLoc.line, codeLoc.col, scope);
266 20282 irGenerator->builder.SetCurrentDebugLocation(diCodeLoc);
267 }
268
269 2562 void DebugInfoGenerator::finalize() const {
270
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 2562 if (irGenerator->cliOptions.instrumentation.generateDebugInfo)
271 59 diBuilder->finalize();
272 2562 }
273
274 8159 llvm::DIType *DebugInfoGenerator::getDITypeForQualType(const ASTNode *node, const QualType &ty) { // NOLINT(*-no-recursion)
275 // Pointer type
276
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 8159 if (ty.isPtr()) {
277
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 1385 llvm::DIType *pointeeTy = getDITypeForQualType(node, ty.getContained());
278
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 2770 return diBuilder->createPointerType(pointeeTy, pointerWidth);
279 }
280
281 // Reference type
282
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 6774 if (ty.isRef()) {
283
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 913 llvm::DIType *referencedType = getDITypeForQualType(node, ty.getContained());
284
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 1826 return diBuilder->createReferenceType(llvm::dwarf::DW_TAG_reference_type, referencedType, pointerWidth);
285 }
286
287 // Array type
288
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 5861 if (ty.isArray()) {
289
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 2 llvm::DIType *itemTy = getDITypeForQualType(node, ty.getContained());
290
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 2 const size_t size = ty.getArraySize();
291
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 2 const llvm::DINodeArray subscripts = diBuilder->getOrCreateArray({});
292
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 2 return diBuilder->createArrayType(size, 0, itemTy, subscripts);
293 }
294
295 // Primitive types
296 llvm::DIType *baseDiType;
297
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 5859 switch (ty.getSuperType()) {
298 27 case TY_DOUBLE:
299 27 baseDiType = doubleTy;
300 27 break;
301 641 case TY_INT:
302
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 641 baseDiType = ty.isSigned() ? intTy : uIntTy;
303 641 break;
304 30 case TY_SHORT:
305
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 30 baseDiType = ty.isSigned() ? shortTy : uShortTy;
306 30 break;
307 1167 case TY_LONG:
308
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 1167 baseDiType = ty.isSigned() ? longTy : uLongTy;
309 1167 break;
310 269 case TY_BYTE:
311 269 baseDiType = byteTy;
312 269 break;
313 280 case TY_CHAR:
314 280 baseDiType = charTy;
315 280 break;
316 295 case TY_STRING:
317 295 baseDiType = stringTy;
318 295 break;
319 454 case TY_BOOL:
320 454 baseDiType = boolTy;
321 454 break;
322 2678 case TY_STRUCT: {
323 // Do cache lookup
324 2678 const size_t hashKey = std::hash<QualType>{}(ty);
325
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 2678 const auto it = structTypeCache.find(hashKey);
326
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 2678 if (it != structTypeCache.end())
327 2291 return it->second;
328
329 // Cache miss, generate struct type
330
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 387 const Struct *spiceStruct = ty.getStruct(node);
331
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 387 assert(spiceStruct != nullptr);
332
333 // Retrieve information about the struct
334
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 387 const uint32_t lineNo = spiceStruct->getDeclCodeLoc().line;
335
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 387 llvm::Type *structType = spiceStruct->entry->getQualType().toLLVMType(irGenerator->sourceFile);
336
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 387 assert(structType != nullptr);
337 387 const llvm::DataLayout &dataLayout = irGenerator->module->getDataLayout();
338
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 387 const llvm::StructLayout *structLayout = dataLayout.getStructLayout(llvm::cast<llvm::StructType>(structType));
339
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 387 const uint32_t alignInBits = dataLayout.getABITypeAlign(structType).value();
340
341 // Create struct ty. Generic substantiations are named by their signature (e.g. Vector<int>), so that debuggers can
342 // tell the manifestations of a generic struct apart
343
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 387 const std::string structName = spiceStruct->getSignature();
344
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 387 const std::string mangledName = NameMangling::mangleStruct(*spiceStruct);
345
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 1161 llvm::DICompositeType *structDiType = diBuilder->createStructType(
346
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 774 diFile, structName, diFile, lineNo, structLayout->getSizeInBits(), alignInBits,
347 387 llvm::DINode::FlagTypePassByReference | llvm::DINode::FlagNonTrivial, nullptr, {}, 0, nullptr, mangledName);
348
349 // Insert into cache
350
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 387 structTypeCache.emplace(hashKey, structDiType);
351
352 // A synthesized vtable pointer takes up the first element of the LLVM struct type, which shifts all fields
353 // by one element
354
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 387 const size_t fieldElementOffset = spiceStruct->hasSynthesizedVTablePtr() ? 1 : 0;
355
356 // Collect DI types for fields
357 387 std::vector<llvm::Metadata *> fieldTypes;
358
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 1509 for (size_t i = 0; i < spiceStruct->scope->getFieldCount(); i++) {
359 // Get field entry
360
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 1122 const SymbolTableEntry *fieldEntry = spiceStruct->scope->lookupField(i);
361
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 1122 assert(fieldEntry != nullptr && fieldEntry->isField());
362
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 1122 if (fieldEntry->isImplicitField)
363 117 continue;
364
365
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 1005 const QualType &fieldType = fieldEntry->getQualType();
366 1005 const uint32_t fieldLineNo = fieldEntry->declNode->codeLoc.line;
367
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 1005 const size_t offsetInBits = structLayout->getElementOffsetInBits(i + fieldElementOffset);
368
369
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 1005 llvm::DIType *fieldDiType = getDITypeForQualType(node, fieldType);
370 llvm::DIDerivedType *fieldDiDerivedType =
371
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 1005 diBuilder->createMemberType(structDiType, fieldEntry->name, diFile, fieldLineNo, fieldDiType->getSizeInBits(),
372 fieldDiType->getAlignInBits(), offsetInBits, llvm::DINode::FlagZero, fieldDiType);
373
374
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 1005 fieldTypes.push_back(fieldDiDerivedType);
375 }
376
377 // Collect DI nodes for the template parameters of generic substantiations
378 387 std::vector<llvm::Metadata *> templateParams;
379
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 387 if (!spiceStruct->templateTypes.empty() && spiceStruct->isFullySubstantiated()) {
380 // The template parameters of a substantiation carry the concrete types, so the declared parameter names
381 // (e.g. 'T') have to be taken from the generic preset
382
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 310 const StructBase *nameSource = spiceStruct->isGenericSubstantiation() ? spiceStruct->genericPreset : spiceStruct;
383
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 310 const QualTypeList concreteTemplateTypes = spiceStruct->getConcreteTemplateTypes();
384
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 310 assert(nameSource->templateTypes.size() == concreteTemplateTypes.size());
385
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 310 templateParams.reserve(concreteTemplateTypes.size());
386
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 785 for (size_t i = 0; i < concreteTemplateTypes.size(); i++) {
387
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 475 const std::string &paramName = nameSource->templateTypes.at(i).getSubType();
388
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 475 llvm::DIType *paramDiType = getDITypeForQualType(node, concreteTemplateTypes.at(i));
389
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 475 templateParams.push_back(diBuilder->createTemplateTypeParameter(compileUnit, paramName, paramDiType, false));
390 }
391 310 }
392
393 // Attach fields and template parameters. This may re-unique the struct type, so refresh all references to it
394 387 const llvm::DINodeArray templateParamArray =
395
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 387 templateParams.empty() ? llvm::DINodeArray() : diBuilder->getOrCreateArray(templateParams);
396
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 387 diBuilder->replaceArrays(structDiType, diBuilder->getOrCreateArray(fieldTypes), templateParamArray);
397
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 387 structTypeCache.at(hashKey) = structDiType;
398 387 baseDiType = structDiType;
399 387 break;
400 387 }
401 2 case TY_INTERFACE: {
402 // Do cache lookup
403 2 const size_t hashKey = std::hash<QualType>{}(ty);
404
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 2 const auto it = structTypeCache.find(hashKey);
405
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 2 if (it != structTypeCache.end())
406 1 return it->second;
407
408 // Cache miss, generate interface type
409
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 1 const Interface *spiceInterface = ty.getInterface(node);
410
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 1 assert(spiceInterface != nullptr);
411
412 // Retrieve information about the interface
413
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 1 const uint32_t lineNo = spiceInterface->getDeclCodeLoc().line;
414
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 1 llvm::Type *interfaceType = spiceInterface->entry->getQualType().toLLVMType(irGenerator->sourceFile);
415
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 1 assert(interfaceType != nullptr);
416
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 1 const llvm::DataLayout dataLayout = irGenerator->module->getDataLayout();
417
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 1 const llvm::StructLayout *structLayout = dataLayout.getStructLayout(llvm::cast<llvm::StructType>(interfaceType));
418
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 1 const uint32_t alignInBits = dataLayout.getABITypeAlign(interfaceType).value();
419
420 // Create interface ty
421
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 1 const std::string mangledName = NameMangling::mangleInterface(*spiceInterface);
422
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 3 llvm::DICompositeType *interfaceDiType = diBuilder->createStructType(
423
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 2 diFile, spiceInterface->name, diFile, lineNo, structLayout->getSizeInBits(), alignInBits,
424 1 llvm::DINode::FlagTypePassByReference | llvm::DINode::FlagNonTrivial, nullptr, {}, 0, nullptr, mangledName);
425
426 // Set vtable holder to itself for interfaces
427
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 1 interfaceDiType->replaceVTableHolder(interfaceDiType);
428 1 baseDiType = interfaceDiType;
429
430 // Insert into cache
431
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 1 structTypeCache.emplace(hashKey, interfaceDiType);
432
433 1 break;
434 1 }
435 16 case TY_FUNCTION: // fall-through
436 case TY_PROCEDURE:
437 16 baseDiType = fatPtrTy;
438 16 break;
439 ✗ default:
440 − throw CompilerError(UNHANDLED_BRANCH, "Debug Info Type fallthrough"); // GCOV_EXCL_LINE
441 }
442
443
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 3567 if (ty.isConst())
444 432 baseDiType = diBuilder->createQualifiedType(llvm::dwarf::DW_TAG_const_type, baseDiType);
445
446 3567 return baseDiType;
447 }
448
449 } // namespace spice::compiler
450