GCC Code Coverage Report

Directory: ../
Coverage: low: ≥ 0% medium: ≥ 75.0% high: ≥ 90.0%
Coverage Exec / Excl / Total
Lines: 97.4% 368 / 6 / 384
Functions: 95.5% 42 / 0 / 44
Branches: 62.3% 421 / 20 / 696
src/irgenerator/IRGenerator.cpp
Line Branch Exec Source
1 // Copyright (c) 2021-2026 ChilliBits. All rights reserved.
2
3 #include "IRGenerator.h"
4
5 #include <SourceFile.h>
6 #include <driver/Driver.h>
7 #include <global/GlobalResourceManager.h>
8 #include <symboltablebuilder/SymbolTableBuilder.h>
9 #include <typechecker/FunctionManager.h>
10
11 #include <llvm/IR/Module.h>
12 #include <llvm/IR/Verifier.h>
13
14 namespace spice::compiler {
15
16 1118 IRGenerator::IRGenerator(GlobalResourceManager &resourceManager, SourceFile *sourceFile)
17 1118 : CompilerPass(resourceManager, sourceFile), context(cliOptions.useLTO ? resourceManager.ltoContext : sourceFile->context),
18
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 1118 builder(sourceFile->builder), module(sourceFile->llvmModule.get()), conversionManager(sourceFile, this),
19
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 2236 stdFunctionManager(sourceFile, resourceManager, module) {
20 // Attach information to the module
21
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 1118 module->setTargetTriple(cliOptions.targetTriple);
22
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 1118 module->setDataLayout(sourceFile->targetMachine->createDataLayout());
23
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 1118 if (cliOptions.outputContainer == OutputContainer::SHARED_LIBRARY) {
24
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 1 module->setPICLevel(llvm::PICLevel::SmallPIC);
25
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 1 module->setPIELevel(llvm::PIELevel::Default);
26 } else {
27
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 1117 module->setPICLevel(llvm::PICLevel::BigPIC);
28
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 1117 module->setPIELevel(llvm::PIELevel::Large);
29 }
30
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 1118 module->setUwtable(llvm::UWTableKind::Default);
31
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 1118 module->setFramePointer(llvm::FramePointerKind::All);
32
33 // Add module identifier metadata
34
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 1118 llvm::NamedMDNode *identifierMetadata = module->getOrInsertNamedMetadata("llvm.ident");
35
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 1118 identifierMetadata->addOperand(llvm::MDNode::get(context, llvm::MDString::get(context, PRODUCER_STRING)));
36
37 // Initialize debug info generator
38
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 1118 if (cliOptions.instrumentation.generateDebugInfo)
39
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 24 diGenerator.initialize(sourceFile->fileName, sourceFile->fileDir);
40 1118 }
41
42 1118 std::any IRGenerator::visitEntry(const EntryNode *node) {
43 // Generate IR
44
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 1118 visitChildren(node);
45
46 // Generate test main if required
47
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 1118 if (sourceFile->isMainFile && cliOptions.generateTestMain)
48 4 generateTestMain();
49
50 // Execute deferred VTable initializations
51
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 2744 for (DeferredLogic &deferredVTableInit : deferredVTableInitializations)
52
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 508 deferredVTableInit.execute();
53
54 // Finalize debug info generator
55 1118 diGenerator.finalize();
56
57 // Verify module
58 1118 verifyModule(node->codeLoc);
59
60
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 2236 return nullptr;
61 }
62
63 47305 llvm::AllocaInst *IRGenerator::insertAlloca(llvm::Type *llvmType, const std::string &varName) {
64
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 47305 if (allocaInsertInst != nullptr) { // If there is already an alloca inst, insert right after that
65
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 33534 llvm::AllocaInst *allocaInst = builder.CreateAlloca(llvmType, nullptr, varName);
66
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 33534 allocaInst->setDebugLoc(llvm::DebugLoc());
67 33534 allocaInst->moveAfter(allocaInsertInst);
68 33534 allocaInsertInst = allocaInst;
69 } else { // This is the first alloca inst in the current function -> insert at the entry block
70 // Save current basic block and move insert cursor to entry block of the current function
71 13771 llvm::BasicBlock *currentBlock = builder.GetInsertBlock();
72 13771 builder.SetInsertPoint(allocaInsertBlock, allocaInsertBlock->begin());
73
74 // Allocate the size of the given LLVM type
75
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 13771 allocaInsertInst = builder.CreateAlloca(llvmType, nullptr, varName);
76
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 13771 allocaInsertInst->setDebugLoc(llvm::DebugLoc());
77
78 // Restore old basic block
79 13771 builder.SetInsertPoint(currentBlock);
80 }
81
82 // Insert lifetime start marker
83
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 47305 if (cliOptions.useLifetimeMarkers)
84 54 builder.CreateLifetimeStart(allocaInsertInst);
85
86 47305 return allocaInsertInst;
87 }
88
89 40833 llvm::AllocaInst *IRGenerator::insertAlloca(const QualType &qualType, const std::string &varName) {
90 40833 llvm::Type *llvmType = qualType.toLLVMType(sourceFile);
91 40833 llvm::AllocaInst *alloca = insertAlloca(llvmType, varName);
92
93 // Insert type metadata
94
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 40833 if (cliOptions.useTBAAMetadata)
95 9 mdGenerator.generateTypeMetadata(allocaInsertInst, qualType);
96
97 40833 return alloca;
98 }
99
100 92059 llvm::LoadInst *IRGenerator::insertLoad(llvm::Type *llvmType, llvm::Value *ptr, bool isVolatile,
101 const std::string &varName) const {
102
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 92059 assert(ptr->getType()->isPointerTy());
103
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 92059 return builder.CreateLoad(llvmType, ptr, isVolatile, varName);
104 }
105
106 81951 llvm::LoadInst *IRGenerator::insertLoad(const QualType &qualType, llvm::Value *ptr, bool isVolatile, const std::string &varName) {
107 81951 llvm::Type *llvmType = qualType.toLLVMType(sourceFile);
108 81951 llvm::LoadInst *load = insertLoad(llvmType, ptr, isVolatile, varName);
109
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 81951 if (cliOptions.useTBAAMetadata)
110 6 mdGenerator.generateTBAAMetadata(load, qualType);
111 81951 return load;
112 }
113
114 49010 llvm::StoreInst *IRGenerator::insertStore(llvm::Value *val, llvm::Value *ptr, bool isVolatile) const {
115
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 49010 assert(ptr->getType()->isPointerTy());
116 49010 return builder.CreateStore(val, ptr, isVolatile);
117 }
118
119 14822 void IRGenerator::insertStore(llvm::Value *val, llvm::Value *ptr, const QualType &qualType, bool isVolatile) {
120 14822 llvm::StoreInst *store = insertStore(val, ptr, isVolatile);
121
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 14822 if (cliOptions.useTBAAMetadata)
122 9 mdGenerator.generateTBAAMetadata(store, qualType);
123 14822 }
124
125 24092 llvm::Value *IRGenerator::insertInBoundsGEP(llvm::Type *type, llvm::Value *basePtr, llvm::ArrayRef<llvm::Value *> indices,
126 const std::string &varName) const {
127
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 24092 assert(basePtr->getType()->isPointerTy());
128
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 24092 assert(!indices.empty());
129
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 69143 assert(std::ranges::all_of(indices, [](const llvm::Value *index) {
130 const llvm::Type *indexType = index->getType();
131 return indexType->isIntegerTy(32) || indexType->isIntegerTy(64);
132 }));
133
134 // Insert GEP
135
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 24092 return builder.CreateInBoundsGEP(type, basePtr, indices, varName);
136 }
137
138 7001 llvm::Value *IRGenerator::insertStructGEP(llvm::Type *type, llvm::Value *basePtr, unsigned int index,
139 const std::string &varName) const {
140
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 7001 assert(basePtr->getType()->isPointerTy());
141
142 // If we use index 0 we can use the base pointer directly
143
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 7001 if (index == 0)
144 2310 return basePtr;
145
146 // Insert GEP
147
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 4691 return builder.CreateStructGEP(type, basePtr, index, varName);
148 }
149
150 54651 llvm::Value *IRGenerator::resolveValue(const ExprNode *node) {
151 // Visit the given AST node
152
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 54651 auto exprResult = any_cast<LLVMExprResult>(visit(node));
153
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 109302 return resolveValue(node, exprResult);
154 }
155
156 61027 llvm::Value *IRGenerator::resolveValue(const ExprNode *node, LLVMExprResult &exprResult) {
157 61027 return resolveValue(node->getEvaluatedSymbolType(manIdx), exprResult);
158 }
159
160 119049 llvm::Value *IRGenerator::resolveValue(const QualType &qualType, LLVMExprResult &exprResult) {
161 // Check if the value is already present
162
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 119049 if (exprResult.value != nullptr)
163 37873 return exprResult.value;
164
165 // Check if a constant is present
166
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 81176 if (exprResult.constant != nullptr) {
167 21508 materializeConstant(exprResult);
168 21508 return exprResult.value;
169 }
170
171
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 59668 assert(exprResult.ptr != nullptr || exprResult.refPtr != nullptr);
172
173 // De-reference if reference type
174
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 59668 const bool isVolatile = exprResult.entry && exprResult.entry->isVolatile;
175
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 59668 if (exprResult.refPtr != nullptr && exprResult.ptr == nullptr)
176
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 712 exprResult.ptr = insertLoad(builder.getPtrTy(), exprResult.refPtr, isVolatile);
177
178 // Load the value from the pointer
179
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 59668 const QualType referencedType = qualType.removeReferenceWrapper();
180
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 59668 exprResult.value = insertLoad(referencedType, exprResult.ptr, isVolatile);
181
182 59668 return exprResult.value;
183 }
184
185 3816 llvm::Value *IRGenerator::resolveAddress(const ASTNode *node) {
186 // Visit the given AST node
187
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 3816 auto exprResult = any_cast<LLVMExprResult>(visit(node));
188
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 7632 return resolveAddress(exprResult);
189 }
190
191 35344 llvm::Value *IRGenerator::resolveAddress(LLVMExprResult &exprResult) {
192 // Check if an address is already present
193
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 35344 if (exprResult.ptr != nullptr)
194 29521 return exprResult.ptr;
195
196 // Check if the reference address is already present
197
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 5823 const bool isVolatile = exprResult.entry && exprResult.entry->isVolatile;
198
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 5823 if (exprResult.refPtr != nullptr && exprResult.ptr == nullptr) {
199
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 4828 exprResult.ptr = insertLoad(builder.getPtrTy(), exprResult.refPtr, isVolatile);
200 4828 return exprResult.ptr;
201 }
202
203 // If not, store the value or constant
204 995 materializeConstant(exprResult);
205
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 995 assert(exprResult.value != nullptr);
206
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 1990 exprResult.ptr = insertAlloca(exprResult.value->getType(), exprResult.entry ? exprResult.entry->name : "");
207 995 insertStore(exprResult.value, exprResult.ptr, isVolatile);
208
209 995 return exprResult.ptr;
210 }
211
212 3200 llvm::Constant *IRGenerator::getDefaultValueForSymbolType(const QualType &symbolType) { // NOLINT(misc-no-recursion)
213 // Double
214
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 3200 if (symbolType.is(TY_DOUBLE))
215
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 8 return llvm::ConstantFP::get(context, llvm::APFloat(0.0));
216
217 // Int
218
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 3192 if (symbolType.is(TY_INT))
219 433 return builder.getInt32(0);
220
221 // Short
222
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 2759 if (symbolType.is(TY_SHORT))
223 8 return builder.getInt16(0);
224
225 // Long
226
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 2751 if (symbolType.is(TY_LONG))
227 1160 return builder.getInt64(0);
228
229 // Byte or char
230
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 1591 if (symbolType.isOneOf({TY_BYTE, TY_CHAR}))
231 30 return builder.getInt8(0);
232
233 // String
234
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 1561 if (symbolType.is(TY_STRING)) {
235
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 444 llvm::GlobalVariable *globalString = builder.CreateGlobalString("", "");
236
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 444 if (cliOptions.comparableOutput)
237
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 444 globalString->setAlignment(llvm::Align(4));
238 444 return globalString;
239 }
240
241 // Bool
242
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 1117 if (symbolType.is(TY_BOOL))
243 53 return builder.getFalse();
244
245 // Pointer or reference
246
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 1064 if (symbolType.isOneOf({TY_PTR, TY_REF}))
247 1001 return llvm::Constant::getNullValue(builder.getPtrTy());
248
249 // Array
250
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 63 if (symbolType.isArray()) {
251 // Get array size
252
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 14 const size_t arraySize = symbolType.getArraySize();
253
254 // Get default value for item
255
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 14 llvm::Constant *defaultItemValue = getDefaultValueForSymbolType(symbolType.getContained());
256
257 // Retrieve array and item type
258
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 14 llvm::Type *itemType = symbolType.getContained().toLLVMType(sourceFile);
259
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 14 llvm::ArrayType *arrayType = llvm::ArrayType::get(itemType, arraySize);
260
261 // Create a constant array with n times the default value
262
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 28 const std::vector itemConstants(arraySize, defaultItemValue);
263
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 14 return llvm::ConstantArray::get(arrayType, itemConstants);
264 14 }
265
266 // Function or procedure
267
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 49 if (symbolType.isOneOf({TY_FUNCTION, TY_PROCEDURE})) {
268
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 22 if (!llvmTypes.fatPtrType)
269
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 10 llvmTypes.fatPtrType = llvm::StructType::get(context, {builder.getPtrTy(), builder.getPtrTy()});
270
271
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 22 llvm::Constant *ptrDefaultValue = getDefaultValueForSymbolType(QualType(TY_PTR));
272
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 22 return llvm::ConstantStruct::get(llvmTypes.fatPtrType, {ptrDefaultValue, ptrDefaultValue});
273 }
274
275 // Struct
276
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 27 if (symbolType.is(TY_STRUCT)) {
277 // Retrieve field count
278
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 26 Scope *structScope = symbolType.getBodyScope();
279
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 26 assert(structScope != nullptr);
280
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 26 const size_t fieldCount = structScope->getFieldCount();
281
282 // Get default values for all fields of the struct
283 26 std::vector<llvm::Constant *> fieldConstants;
284
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 26 fieldConstants.reserve(fieldCount);
285
286 // Add default value for each struct field
287
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 89 for (size_t i = 0; i < fieldCount; i++) {
288 // Get entry of the field
289
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 63 const SymbolTableEntry *fieldEntry = structScope->lookupField(i);
290
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 63 assert(fieldEntry != nullptr && fieldEntry->isField());
291
292 // Retrieve default field value
293 llvm::Constant *defaultFieldValue;
294
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 63 if (const auto fieldNode = dynamic_cast<FieldNode *>(fieldEntry->declNode); fieldNode && fieldNode->defaultValue)
295
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 4 defaultFieldValue = getConst(fieldNode->defaultValue->getCompileTimeValue(manIdx), fieldEntry->getQualType(), fieldNode);
296 else
297
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 59 defaultFieldValue = getDefaultValueForSymbolType(fieldEntry->getQualType());
298
299
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 63 fieldConstants.push_back(defaultFieldValue);
300 }
301
302
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 26 const auto structType = reinterpret_cast<llvm::StructType *>(symbolType.toLLVMType(sourceFile));
303
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 26 return llvm::ConstantStruct::get(structType, fieldConstants);
304 26 }
305
306 // Interface
307
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 1 if (symbolType.is(TY_INTERFACE)) {
308 1 const auto structType = reinterpret_cast<llvm::StructType *>(symbolType.toLLVMType(sourceFile));
309 1 return llvm::ConstantStruct::get(structType, llvm::Constant::getNullValue(builder.getPtrTy()));
310 }
311
312 − throw CompilerError(INTERNAL_ERROR, "Cannot determine default value for symbol type"); // GCOV_EXCL_LINE
313 }
314
315 21535 llvm::Constant *IRGenerator::getConst(const CompileTimeValue &compileTimeValue, const QualType &type, const ASTNode *node) const {
316
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 21535 if (type.is(TY_DOUBLE))
317
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 688 return llvm::ConstantFP::get(context, llvm::APFloat(compileTimeValue.doubleValue));
318
319
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 20847 if (type.is(TY_INT))
320 4195 return builder.getInt32(compileTimeValue.intValue);
321
322
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 16652 if (type.is(TY_SHORT))
323 902 return builder.getInt16(compileTimeValue.shortValue);
324
325
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 15750 if (type.is(TY_LONG))
326 7937 return builder.getInt64(compileTimeValue.longValue);
327
328
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 7813 if (type.isOneOf({TY_BYTE, TY_CHAR}))
329 2902 return builder.getInt8(compileTimeValue.charValue);
330
331
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 4911 if (type.is(TY_STRING)) {
332 2649 const std::string &stringValue = resourceManager.compileTimeStringValues.at(compileTimeValue.stringValueOffset);
333
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 7947 return createGlobalStringConst(ANON_GLOBAL_STRING_NAME, stringValue, node->codeLoc);
334 }
335
336
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 2262 if (type.is(TY_BOOL))
337 2262 return builder.getInt1(compileTimeValue.boolValue);
338
339 ✗ if (type.is(TY_PTR))
340 ✗ return llvm::Constant::getNullValue(builder.getPtrTy());
341
342 − throw CompilerError(UNHANDLED_BRANCH, "Constant fall-through"); // GCOV_EXCL_LINE
343 }
344
345 41012 llvm::BasicBlock *IRGenerator::createBlock(const std::string &blockName /*=""*/) const {
346
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 41012 return llvm::BasicBlock::Create(context, blockName);
347 }
348
349 41012 void IRGenerator::switchToBlock(llvm::BasicBlock *block, llvm::Function *parentFct /*=nullptr*/) {
350
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 41012 assert(block->getParent() == nullptr); // Ensure that the block was not added to a function already
351 // If no parent function were passed, use the current function
352
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 41012 if (!parentFct)
353 27183 parentFct = builder.GetInsertBlock()->getParent();
354 // Append block to current function
355 41012 parentFct->insert(parentFct->end(), block);
356 // Set insert point to the block
357 41012 builder.SetInsertPoint(block);
358 41012 blockAlreadyTerminated = false;
359 41012 }
360
361 12152 void IRGenerator::terminateBlock(const StmtLstNode *stmtLstNode) {
362 12152 diGenerator.setSourceLocation(stmtLstNode->closingBraceCodeLoc);
363 12152 generateScopeCleanup(stmtLstNode);
364 12152 blockAlreadyTerminated = true;
365 12152 }
366
367 15035 void IRGenerator::insertJump(llvm::BasicBlock *targetBlock) {
368
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 15035 if (blockAlreadyTerminated)
369 4300 return;
370 10735 builder.CreateBr(targetBlock);
371 10735 blockAlreadyTerminated = true;
372 }
373
374 11301 void IRGenerator::insertCondJump(llvm::Value *condition, llvm::BasicBlock *trueBlock, llvm::BasicBlock *falseBlock,
375 Likelihood likelihood /*=UNSPECIFIED*/) {
376
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 11301 if (blockAlreadyTerminated)
377 ✗ return;
378 11301 llvm::BranchInst *jumpInst = builder.CreateCondBr(condition, trueBlock, falseBlock);
379 11301 blockAlreadyTerminated = true;
380
381
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 11301 if (likelihood != Likelihood::UNSPECIFIED)
382 1465 mdGenerator.generateBranchWeightsMetadata(jumpInst, likelihood);
383 }
384
385 13829 void IRGenerator::verifyFunction(const llvm::Function *fct, const CodeLoc &codeLoc) const {
386 // Skip the verifying step if the verifier was disabled manually or debug info is emitted
387
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 13829 if (cliOptions.disableVerifier)
388 ✗ return;
389
390 // Verify function
391 13829 std::string output;
392
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 13829 llvm::raw_string_ostream oss(output);
393 − if (llvm::verifyFunction(*fct, &oss)) // LCOV_EXCL_LINE
394 − throw CompilerError(codeLoc, INVALID_FUNCTION, output); // LCOV_EXCL_LINE
395 13829 }
396
397 1118 void IRGenerator::verifyModule(const CodeLoc &codeLoc) const {
398 // Skip the verifying step if the verifier was disabled manually or debug info is emitted
399
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 1118 if (cliOptions.disableVerifier)
400 ✗ return;
401
402 // Verify module
403 1118 std::string output;
404
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 1118 llvm::raw_string_ostream oss(output);
405 − if (llvm::verifyModule(*module, &oss)) // LCOV_EXCL_LINE
406 − throw CompilerError(codeLoc, INVALID_MODULE, output); // LCOV_EXCL_LINE
407 1118 }
408
409 7005 LLVMExprResult IRGenerator::doAssignment(const ASTNode *lhsNode, const ExprNode *rhsNode, const ASTNode *node) {
410 // Get entry of left side
411
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 7005 auto exprResult = std::any_cast<LLVMExprResult>(visit(lhsNode));
412 7005 SymbolTableEntry *entry = exprResult.entry;
413
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 7005 llvm::Value *lhsAddress = entry != nullptr && entry->getQualType().isRef() ? exprResult.refPtr : resolveAddress(exprResult);
414
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 14010 return doAssignment(lhsAddress, entry, rhsNode, node);
415 }
416
417 16701 LLVMExprResult IRGenerator::doAssignment(llvm::Value *lhsAddress, SymbolTableEntry *lhsEntry, const ExprNode *rhsNode,
418 const ASTNode *node, bool isDecl) {
419 // Get symbol type of right side
420
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 16701 const QualType &rhsSType = rhsNode->getEvaluatedSymbolType(manIdx);
421
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 16701 auto rhs = std::any_cast<LLVMExprResult>(visit(rhsNode));
422
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 33402 return doAssignment(lhsAddress, lhsEntry, rhs, rhsSType, node, isDecl);
423 }
424
425 16879 LLVMExprResult IRGenerator::doAssignment(llvm::Value *lhsAddress, SymbolTableEntry *lhsEntry, LLVMExprResult &rhs,
426 const QualType &rhsSType, const ASTNode *node, bool isDecl) {
427 // Deduce some information about the assignment
428
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 16879 const bool isRefAssign = lhsEntry != nullptr && lhsEntry->getQualType().isRef();
429
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 16879 const bool needsCopy = !isRefAssign && rhsSType.removeReferenceWrapper().is(TY_STRUCT) && !rhs.isTemporary();
430
431
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 16879 if (isRefAssign) {
432
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 757 assert(lhsEntry != nullptr);
433
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 757 if (isDecl) { // Reference gets initially assigned
434 // Get address of right side
435 430 llvm::Value *rhsAddress = resolveAddress(rhs);
436
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 430 assert(rhsAddress != nullptr);
437
438 // Store lhs pointer to rhs
439
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 430 llvm::Value *refAddress = insertAlloca(builder.getPtrTy());
440 430 lhsEntry->updateAddress(refAddress);
441 430 insertStore(rhsAddress, refAddress);
442
443 430 return LLVMExprResult{.value = rhsAddress, .ptr = refAddress, .entry = lhsEntry};
444 }
445
446 // Reference to reference assignment (only for struct fields that are not initialized yet)
447 // These are only allowed inside a ctor body. In other cases, the value of the reference gets assigned, not the ref itself.
448
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 327 const bool isInitialFieldRefAssign = isInCtorBody && rhsSType.isRef() && rhs.entry && lhsEntry->isField();
449 // Assigning the result variable
450 327 const bool isReturnValAssign = lhsEntry->name == RETURN_VARIABLE_NAME;
451
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 327 if (isInitialFieldRefAssign || isReturnValAssign) {
452 // Get address of right side
453 224 llvm::Value *referencedAddress = resolveAddress(rhs);
454
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 224 assert(referencedAddress != nullptr);
455
456 // Store the rhs* to the lhs**
457 224 insertStore(referencedAddress, lhsAddress);
458
459 224 return LLVMExprResult{.value = referencedAddress, .ptr = lhsAddress, .entry = lhsEntry};
460 }
461
462 // Load referenced address
463
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 103 lhsAddress = insertLoad(builder.getPtrTy(), lhsAddress);
464 }
465
466
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 16225 if (isDecl && rhsSType.is(TY_STRUCT) && rhs.isTemporary()) {
467
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 1180 assert(lhsEntry != nullptr);
468 // Directly set the address to the lhs entry (temp stealing)
469 1180 llvm::Value *rhsAddress = resolveAddress(rhs);
470 1180 lhsEntry->updateAddress(rhsAddress);
471 1180 rhs.entry = lhsEntry;
472 1180 return rhs;
473 }
474
475 // Allocate new memory if the lhs address does not exist
476
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 15045 if (!lhsAddress) {
477
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 8231 assert(lhsEntry != nullptr);
478
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 8231 lhsAddress = insertAlloca(lhsEntry->getQualType());
479 8231 lhsEntry->updateAddress(lhsAddress);
480 }
481
482 // Check if we try to assign an array by value to a pointer. Here we have to store the address of the first element to the lhs
483
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 15045 if (lhsEntry && lhsEntry->getQualType().isPtr() && rhsSType.isArray() && rhsSType.getArraySize() != ARRAY_SIZE_UNKNOWN) {
484 // Get address of right side
485
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 2 llvm::Value *rhsAddress = resolveAddress(rhs);
486
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 2 assert(rhsAddress != nullptr);
487
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 2 llvm::Type *elementTy = rhsSType.toLLVMType(sourceFile);
488
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 2 llvm::Value *indices[2] = {builder.getInt64(0), builder.getInt32(0)};
489
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 2 llvm::Value *firstItemAddress = insertInBoundsGEP(elementTy, rhsAddress, indices);
490
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 2 insertStore(firstItemAddress, lhsAddress);
491 2 return LLVMExprResult{.value = rhsAddress, .ptr = lhsAddress, .entry = lhsEntry};
492 }
493
494 // Handle operator overloads
495
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 15043 if (!isDecl && conversionManager.callsOverloadedOpFct(node, DEFAULT_OP_IDX)) {
496 103 ResolverFct lhsV = [&] { return static_cast<llvm::Value *>(nullptr); };
497
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 103 ResolverFct rhsV = [&] { return resolveValue(rhsSType, rhs); };
498 206 ResolverFct lhsP = [&] { return lhsAddress; };
499 206 ResolverFct rhsP = [&] { return resolveAddress(rhs); };
500 103 return conversionManager.callOperatorOverloadFct<2>(node, {lhsV, lhsP, rhsV, rhsP}, DEFAULT_OP_IDX);
501 103 }
502
503 // Check if we need to copy the rhs to the lhs. This happens for structs
504
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 14940 if (needsCopy) {
505 // Get address of right side
506
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 164 llvm::Value *rhsAddress = resolveAddress(rhs);
507
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 164 assert(rhsAddress != nullptr);
508
509
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 164 const QualType rhsSTypeNonRef = rhsSType.removeReferenceWrapper().toNonConst();
510
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 164 if (rhsSTypeNonRef.isTriviallyCopyable(node)) {
511 // Create shallow copy
512
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 125 llvm::Type *rhsType = rhsSTypeNonRef.toLLVMType(sourceFile);
513
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 125 const std::string copyName = lhsEntry ? lhsEntry->name : "";
514
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 125 generateShallowCopy(rhsAddress, rhsType, lhsAddress, lhsEntry && lhsEntry->isVolatile);
515 125 } else {
516 // Check if we have a copy ctor
517
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 39 Scope *structScope = rhsSTypeNonRef.getBodyScope();
518
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 117 const ArgList args = {{rhsSTypeNonRef.toConstRef(node), rhs.isTemporary()}};
519
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 39 const Function *copyCtor = FunctionManager::lookup(structScope, CTOR_FUNCTION_NAME, rhsSTypeNonRef, args, true);
520
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 39 if (copyCtor != nullptr) {
521 // Call copy ctor
522
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 78 generateCtorOrDtorCall(lhsAddress, copyCtor, {rhsAddress});
523 } else {
524 ✗ const std::string structName = rhsSTypeNonRef.getName();
525 ✗ const std::string msg = "Cannot copy struct '" + structName + "', as it is not trivially copyable and has no copy ctor";
526 ✗ throw SemanticError(node, COPY_CTOR_REQUIRED, msg);
527 ✗ }
528 39 }
529 164 return LLVMExprResult{.ptr = lhsAddress, .entry = lhsEntry};
530 }
531
532 // Optimization: If we have the address of both sides, we can do a memcpy instead of loading and storing the value
533 14776 llvm::Value *rhsValue = nullptr;
534
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 14776 if (rhsSType.is(TY_STRUCT) && rhs.value == nullptr && rhs.constant == nullptr) {
535 // Create shallow copy
536
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 229 const QualType rhsSTypeNonRef = rhsSType.removeReferenceWrapper().toNonConst();
537
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 229 llvm::Type *rhsType = rhsSTypeNonRef.toLLVMType(sourceFile);
538
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 229 llvm::Value *rhsAddress = resolveAddress(rhs);
539
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 229 assert(rhsAddress != nullptr);
540
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 230 const std::string copyName = lhsEntry ? lhsEntry->name : "";
541
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 229 generateShallowCopy(rhsAddress, rhsType, lhsAddress, lhsEntry && lhsEntry->isVolatile);
542 229 } else {
543 // We can load the value from the right side and store it to the left side
544 // Retrieve value of the right side
545 14547 rhsValue = resolveValue(rhsSType, rhs);
546 // Store the value to the address
547 14547 insertStore(rhsValue, lhsAddress, rhsSType);
548 }
549
550 14776 return LLVMExprResult{.value = rhsValue, .ptr = lhsAddress, .entry = lhsEntry};
551
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 103 }
552
553 415 void IRGenerator::generateShallowCopy(llvm::Value *oldAddress, llvm::Type *varType, llvm::Value *targetAddress,
554 bool isVolatile) const {
555 // Retrieve size to copy
556
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 415 const llvm::TypeSize typeSize = module->getDataLayout().getTypeAllocSize(varType);
557
558 // Create values for memcpy intrinsic
559
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 415 llvm::Value *structSize = builder.getInt64(typeSize);
560
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 415 llvm::Value *copyVolatile = builder.getInt1(isVolatile);
561
562 // Call memcpy intrinsic to execute the shallow copy
563
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 415 llvm::Function *memcpyFct = stdFunctionManager.getMemcpyIntrinsic();
564
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 415 assert(targetAddress != nullptr);
565
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 415 builder.CreateCall(memcpyFct, {targetAddress, oldAddress, structSize, copyVolatile});
566 415 }
567
568 29332 void IRGenerator::autoDeReferencePtr(llvm::Value *&ptr, QualType &symbolType) {
569
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 51615 while (symbolType.isPtr() || symbolType.isRef()) {
570
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 22283 ptr = insertLoad(symbolType, ptr);
571
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 22283 symbolType = symbolType.getContained();
572 }
573 29332 }
574
575 59 llvm::GlobalVariable *IRGenerator::createGlobalConst(const std::string &baseName, llvm::Constant *constant) const {
576 // Get unused name
577
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 59 const std::string globalName = getUnusedGlobalName(baseName);
578 // Create global
579
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 59 module->getOrInsertGlobal(globalName, constant->getType());
580
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 59 llvm::GlobalVariable *global = module->getNamedGlobal(globalName);
581 // Set initializer to the given constant
582
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 59 global->setInitializer(constant);
583 59 global->setConstant(true);
584
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 59 global->setLinkage(llvm::GlobalValue::PrivateLinkage);
585 59 global->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global);
586 59 return global;
587 59 }
588
589 3584 llvm::GlobalVariable *IRGenerator::createGlobalStringConst(const std::string &baseName, const std::string &value) const {
590 // Get unused name
591
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 3584 const std::string globalName = getUnusedGlobalName(baseName);
592 // Create global
593
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 3584 builder.CreateGlobalString(value, globalName, 0, module);
594
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 3584 llvm::GlobalVariable *global = module->getNamedGlobal(globalName);
595 // If the output should be comparable, fix alignment to 4 bytes
596
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 3584 if (cliOptions.comparableOutput)
597
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 3584 global->setAlignment(llvm::Align(4));
598 3584 return global;
599 3584 }
600
601 3584 llvm::GlobalVariable *IRGenerator::createGlobalStringConst(const std::string &baseName, const std::string &value,
602 const CodeLoc &codeLoc) const {
603 3584 llvm::GlobalVariable *global = createGlobalStringConst(baseName, value);
604 // Create debug info
605
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 3584 if (cliOptions.instrumentation.generateDebugInfo)
606
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 44 diGenerator.generateGlobalStringDebugInfo(global, global->getName().str(), value.length(), codeLoc);
607 3584 return global;
608 }
609
610 5932 std::string IRGenerator::getUnusedGlobalName(const std::string &baseName) const {
611 // Find an unused global name
612 5932 std::string globalName;
613 5932 unsigned int suffixNumber = 0;
614 do {
615
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 146892 globalName = baseName + std::to_string(suffixNumber);
616 146892 suffixNumber++;
617
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 146892 } while (module->getNamedGlobal(globalName) != nullptr);
618 5932 return globalName;
619 ✗ }
620
621 22503 void IRGenerator::materializeConstant(LLVMExprResult &exprResult) {
622 // Skip results, that do not contain a constant or already have a value
623
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 22503 if (exprResult.value != nullptr || exprResult.constant == nullptr)
624 581 return;
625
626 // Default case: the value to the constant
627 21922 exprResult.value = exprResult.constant;
628 }
629
630 16151 bool IRGenerator::isSymbolDSOLocal(bool isPublic) const {
631 // If we are compiling a shared library and export the global symbol, we need to drop dso_local
632 // because it may be interposed by other shared objects by the dynamic linker.
633
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 16151 return !(isPublic && cliOptions.outputContainer == OutputContainer::SHARED_LIBRARY);
634 }
635
636 7650 llvm::GlobalValue::LinkageTypes IRGenerator::getSymbolLinkageType(bool isPublic) const {
637
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 7650 return isPublic ? llvm::GlobalValue::ExternalLinkage : llvm::GlobalValue::PrivateLinkage;
638 }
639
640 1524 void IRGenerator::attachComdatToSymbol(llvm::GlobalVariable *global, const std::string &comdatName, bool isPublic) const {
641 // MachO does not support comdat annotations
642
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 1524 if (isPublic && cliOptions.targetTriple.getObjectFormat() != llvm::Triple::MachO)
643
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 1446 global->setComdat(module->getOrInsertComdat(comdatName));
644 1524 }
645
646 2155 std::string IRGenerator::getIRString(llvm::Module *llvmModule, const CliOptions &cliOptions) {
647
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 2155 assert(llvmModule != nullptr); // Make sure the module hasn't been moved away
648
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 2155 const bool eliminateTarget = cliOptions.comparableOutput && cliOptions.isNativeTarget;
649
650 // Backup target triple and data layout
651
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 2155 const llvm::Triple targetTriple = llvmModule->getTargetTriple();
652
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 2155 const std::string targetDataLayout = llvmModule->getDataLayoutStr();
653 // Remove target triple and data layout
654
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 2155 if (eliminateTarget) {
655 2057 llvmModule->setTargetTriple(llvm::Triple());
656
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 2057 llvmModule->setDataLayout("");
657 }
658
659 // Get IR string
660 2155 std::string output;
661
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 2155 llvm::raw_string_ostream oss(output);
662
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 2155 llvmModule->print(oss, nullptr);
663
664 // Restore target triple and data layout
665
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 2155 if (eliminateTarget) {
666
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 2057 llvmModule->setTargetTriple(targetTriple);
667
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 2057 llvmModule->setDataLayout(targetDataLayout);
668 }
669
670 2155 return output;
671 2155 }
672
673 /**
674 * Returns the operator function list for the current manifestation and the given node
675 *
676 * @param node Node to retrieve the op fct pointer list from
677 * @return Op fct pointer list
678 */
679 29964 const std::vector<const Function *> &IRGenerator::getOpFctPointers(const ASTNode *node) const {
680
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 29964 assert(node->getOpFctPointers()->size() > manIdx);
681 29964 return node->getOpFctPointers()->at(manIdx);
682 }
683
684 } // namespace spice::compiler
685