GCC Code Coverage Report

Directory: ../
Coverage: low: ≥ 0% medium: ≥ 75.0% high: ≥ 90.0%
Coverage Exec / Excl / Total
Lines: 97.0% 353 / 6 / 370
Functions: 100.0% 37 / 0 / 37
Branches: 62.8% 418 / 20 / 686
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 <llvm/IR/Module.h>
6 #include <llvm/IR/Verifier.h>
7
8 #include <SourceFile.h>
9 #include <global/GlobalResourceManager.h>
10 #include <irgenerator/NameMangling.h>
11 #include <symboltablebuilder/SymbolTableBuilder.h>
12
13 namespace spice::compiler {
14
15 992 IRGenerator::IRGenerator(GlobalResourceManager &resourceManager, SourceFile *sourceFile)
16 992 : CompilerPass(resourceManager, sourceFile), context(cliOptions.useLTO ? resourceManager.ltoContext : sourceFile->context),
17
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 992 builder(sourceFile->builder), module(sourceFile->llvmModule.get()), conversionManager(sourceFile, this),
18
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 1984 stdFunctionManager(sourceFile, resourceManager, module) {
19 // Attach information to the module
20
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 992 module->setTargetTriple(cliOptions.targetTriple);
21
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 992 module->setDataLayout(sourceFile->targetMachine->createDataLayout());
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 992 module->setPICLevel(llvm::PICLevel::BigPIC);
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 992 module->setPIELevel(llvm::PIELevel::Large);
24
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 992 module->setUwtable(llvm::UWTableKind::Default);
25
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 992 module->setFramePointer(llvm::FramePointerKind::All);
26
27 // Add module identifier metadata
28
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 992 llvm::NamedMDNode *identifierMetadata = module->getOrInsertNamedMetadata("llvm.ident");
29
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 992 identifierMetadata->addOperand(llvm::MDNode::get(context, llvm::MDString::get(context, PRODUCER_STRING)));
30
31 // Initialize debug info generator
32
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 992 if (cliOptions.instrumentation.generateDebugInfo)
33
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 24 diGenerator.initialize(sourceFile->fileName, sourceFile->fileDir);
34 992 }
35
36 992 std::any IRGenerator::visitEntry(const EntryNode *node) {
37 // Generate IR
38
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 992 visitChildren(node);
39
40 // Generate test main if required
41
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 992 if (sourceFile->isMainFile && cliOptions.generateTestMain)
42 4 generateTestMain();
43
44 // Execute deferred VTable initializations
45
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 1388 for (DeferredLogic &deferredVTableInit : deferredVTableInitializations)
46
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 396 deferredVTableInit.execute();
47
48 // Finalize debug info generator
49 992 diGenerator.finalize();
50
51 // Verify module
52 992 verifyModule(node->codeLoc);
53
54
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 992 return nullptr;
55 }
56
57 40378 llvm::AllocaInst *IRGenerator::insertAlloca(llvm::Type *llvmType, std::string varName) {
58
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 40378 if (!cliOptions.namesForIRValues)
59 ✗ varName = "";
60
61
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 40378 if (allocaInsertInst != nullptr) { // If there is already an alloca inst, insert right after that
62
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 28718 llvm::AllocaInst *allocaInst = builder.CreateAlloca(llvmType, nullptr, varName);
63
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 28718 allocaInst->setDebugLoc(llvm::DebugLoc());
64 28718 allocaInst->moveAfter(allocaInsertInst);
65 28718 allocaInsertInst = allocaInst;
66 } else { // This is the first alloca inst in the current function -> insert at the entry block
67 // Save current basic block and move insert cursor to entry block of the current function
68 11660 llvm::BasicBlock *currentBlock = builder.GetInsertBlock();
69 11660 builder.SetInsertPoint(allocaInsertBlock, allocaInsertBlock->begin());
70
71 // Allocate the size of the given LLVM type
72
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 11660 allocaInsertInst = builder.CreateAlloca(llvmType, nullptr, varName);
73
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 11660 allocaInsertInst->setDebugLoc(llvm::DebugLoc());
74
75 // Restore old basic block
76 11660 builder.SetInsertPoint(currentBlock);
77 }
78
79 // Insert lifetime start marker
80
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 40378 if (cliOptions.useLifetimeMarkers)
81 59 builder.CreateLifetimeStart(allocaInsertInst);
82
83 40378 return allocaInsertInst;
84 }
85
86 35033 llvm::AllocaInst *IRGenerator::insertAlloca(const QualType &qualType, const std::string &varName) {
87 35033 llvm::Type *llvmType = qualType.toLLVMType(sourceFile);
88
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 35033 llvm::AllocaInst *alloca = insertAlloca(llvmType, varName);
89
90 // Insert type metadata
91
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 35033 if (cliOptions.useTBAAMetadata)
92 9 mdGenerator.generateTypeMetadata(allocaInsertInst, qualType);
93
94 35033 return alloca;
95 }
96
97 77453 llvm::LoadInst *IRGenerator::insertLoad(llvm::Type *llvmType, llvm::Value *ptr, bool isVolatile,
98 const std::string &varName) const {
99
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 77453 assert(ptr->getType()->isPointerTy());
100
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 77453 return builder.CreateLoad(llvmType, ptr, isVolatile, cliOptions.namesForIRValues ? varName : "");
101 }
102
103 70173 llvm::LoadInst *IRGenerator::insertLoad(const QualType &qualType, llvm::Value *ptr, bool isVolatile, const std::string &varName) {
104 70173 llvm::Type *llvmType = qualType.toLLVMType(sourceFile);
105 70173 llvm::LoadInst *load = insertLoad(llvmType, ptr, isVolatile, varName);
106
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 70173 if (cliOptions.useTBAAMetadata)
107 8 mdGenerator.generateTBAAMetadata(load, qualType);
108 70173 return load;
109 }
110
111 41691 llvm::StoreInst *IRGenerator::insertStore(llvm::Value *val, llvm::Value *ptr, bool isVolatile) const {
112
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 41691 assert(ptr->getType()->isPointerTy());
113 41691 return builder.CreateStore(val, ptr, isVolatile);
114 }
115
116 12565 void IRGenerator::insertStore(llvm::Value *val, llvm::Value *ptr, const QualType &qualType, bool isVolatile) {
117 12565 llvm::StoreInst *store = insertStore(val, ptr, isVolatile);
118
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 12565 if (cliOptions.useTBAAMetadata)
119 9 mdGenerator.generateTBAAMetadata(store, qualType);
120 12565 }
121
122 19741 llvm::Value *IRGenerator::insertInBoundsGEP(llvm::Type *type, llvm::Value *basePtr, llvm::ArrayRef<llvm::Value *> indices,
123 std::string varName) const {
124
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 19741 assert(basePtr->getType()->isPointerTy());
125
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 19741 assert(!indices.empty());
126
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 56364 assert(std::ranges::all_of(indices, [](const llvm::Value *index) {
127 const llvm::Type *indexType = index->getType();
128 return indexType->isIntegerTy(32) || indexType->isIntegerTy(64);
129 }));
130
131
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 19741 if (!cliOptions.namesForIRValues)
132 ✗ varName.clear();
133
134 // Insert GEP
135
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 19741 return builder.CreateInBoundsGEP(type, basePtr, indices, varName);
136 }
137
138 5575 llvm::Value *IRGenerator::insertStructGEP(llvm::Type *type, llvm::Value *basePtr, unsigned int index, std::string varName) const {
139
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 5575 assert(basePtr->getType()->isPointerTy());
140
141
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 5575 if (!cliOptions.namesForIRValues)
142 ✗ varName.clear();
143
144 // If we use index 0 we can use the base pointer directly
145
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 5575 if (index == 0)
146 1946 return basePtr;
147
148 // Insert GEP
149
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 3629 return builder.CreateStructGEP(type, basePtr, index, varName);
150 }
151
152 47104 llvm::Value *IRGenerator::resolveValue(const ExprNode *node) {
153 // Visit the given AST node
154
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 47104 auto exprResult = any_cast<LLVMExprResult>(visit(node));
155
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 94208 return resolveValue(node, exprResult);
156 }
157
158 53729 llvm::Value *IRGenerator::resolveValue(const ExprNode *node, LLVMExprResult &exprResult) {
159 53729 return resolveValue(node->getEvaluatedSymbolType(manIdx), exprResult);
160 }
161
162 103670 llvm::Value *IRGenerator::resolveValue(const QualType &qualType, LLVMExprResult &exprResult) {
163 // Check if the value is already present
164
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 103670 if (exprResult.value != nullptr)
165 33548 return exprResult.value;
166
167 // Check if a constant is present
168
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 70122 if (exprResult.constant != nullptr) {
169 18362 materializeConstant(exprResult);
170 18362 return exprResult.value;
171 }
172
173
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 51760 assert(exprResult.ptr != nullptr || exprResult.refPtr != nullptr);
174
175 // De-reference if reference type
176
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 51760 const bool isVolatile = exprResult.entry && exprResult.entry->isVolatile;
177
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 51760 if (exprResult.refPtr != nullptr && exprResult.ptr == nullptr)
178
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 1152 exprResult.ptr = insertLoad(builder.getPtrTy(), exprResult.refPtr, isVolatile);
179
180 // Load the value from the pointer
181
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 51760 const QualType referencedType = qualType.removeReferenceWrapper();
182
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 51760 exprResult.value = insertLoad(referencedType, exprResult.ptr, isVolatile);
183
184 51760 return exprResult.value;
185 }
186
187 2989 llvm::Value *IRGenerator::resolveAddress(const ASTNode *node) {
188 // Visit the given AST node
189
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 2989 auto exprResult = any_cast<LLVMExprResult>(visit(node));
190
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 5978 return resolveAddress(exprResult);
191 }
192
193 22993 llvm::Value *IRGenerator::resolveAddress(LLVMExprResult &exprResult) {
194 // Check if an address is already present
195
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 22993 if (exprResult.ptr != nullptr)
196 19394 return exprResult.ptr;
197
198 // Check if the reference address is already present
199
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 3599 const bool isVolatile = exprResult.entry && exprResult.entry->isVolatile;
200
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 3599 if (exprResult.refPtr != nullptr && exprResult.ptr == nullptr) {
201
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 2841 exprResult.ptr = insertLoad(builder.getPtrTy(), exprResult.refPtr, isVolatile);
202 2841 return exprResult.ptr;
203 }
204
205 // If not, store the value or constant
206 758 materializeConstant(exprResult);
207
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 758 assert(exprResult.value != nullptr);
208
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 1510 exprResult.ptr = insertAlloca(exprResult.value->getType(), exprResult.entry ? exprResult.entry->name : "");
209 758 insertStore(exprResult.value, exprResult.ptr, isVolatile);
210
211 758 return exprResult.ptr;
212 }
213
214 2659 llvm::Constant *IRGenerator::getDefaultValueForSymbolType(const QualType &symbolType) { // NOLINT(misc-no-recursion)
215 // Double
216
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 2659 if (symbolType.is(TY_DOUBLE))
217
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 4 return llvm::ConstantFP::get(context, llvm::APFloat(0.0));
218
219 // Int
220
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 2655 if (symbolType.is(TY_INT))
221 360 return builder.getInt32(0);
222
223 // Short
224
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 2295 if (symbolType.is(TY_SHORT))
225 12 return builder.getInt16(0);
226
227 // Long
228
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 2283 if (symbolType.is(TY_LONG))
229 992 return builder.getInt64(0);
230
231 // Byte or char
232
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 1291 if (symbolType.isOneOf({TY_BYTE, TY_CHAR}))
233 20 return builder.getInt8(0);
234
235 // String
236
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 1271 if (symbolType.is(TY_STRING)) {
237
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 392 llvm::GlobalVariable *globalString = builder.CreateGlobalString("", "");
238
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 392 if (cliOptions.comparableOutput)
239
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 392 globalString->setAlignment(llvm::Align(4));
240 392 return globalString;
241 }
242
243 // Bool
244
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 879 if (symbolType.is(TY_BOOL))
245 33 return builder.getFalse();
246
247 // Pointer or reference
248
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 846 if (symbolType.isOneOf({TY_PTR, TY_REF}))
249 789 return llvm::Constant::getNullValue(builder.getPtrTy());
250
251 // Array
252
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 57 if (symbolType.isArray()) {
253 // Get array size
254
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 14 const size_t arraySize = symbolType.getArraySize();
255
256 // Get default value for item
257
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 14 llvm::Constant *defaultItemValue = getDefaultValueForSymbolType(symbolType.getContained());
258
259 // Retrieve array and item type
260
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 14 llvm::Type *itemType = symbolType.getContained().toLLVMType(sourceFile);
261
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 14 llvm::ArrayType *arrayType = llvm::ArrayType::get(itemType, arraySize);
262
263 // Create a constant array with n times the default value
264
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 14 const std::vector itemConstants(arraySize, defaultItemValue);
265
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 14 return llvm::ConstantArray::get(arrayType, itemConstants);
266 14 }
267
268 // Function or procedure
269
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 43 if (symbolType.isOneOf({TY_FUNCTION, TY_PROCEDURE})) {
270
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 16 if (!llvmTypes.fatPtrType)
271
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 8 llvmTypes.fatPtrType = llvm::StructType::get(context, {builder.getPtrTy(), builder.getPtrTy()});
272
273
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 16 llvm::Constant *ptrDefaultValue = getDefaultValueForSymbolType(QualType(TY_PTR));
274
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 16 return llvm::ConstantStruct::get(llvmTypes.fatPtrType, {ptrDefaultValue, ptrDefaultValue});
275 }
276
277 // Struct
278
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 27 if (symbolType.is(TY_STRUCT)) {
279 // Retrieve field count
280
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 26 Scope *structScope = symbolType.getBodyScope();
281
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 26 assert(structScope != nullptr);
282
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 26 const size_t fieldCount = structScope->getFieldCount();
283
284 // Get default values for all fields of the struct
285 26 std::vector<llvm::Constant *> fieldConstants;
286
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 26 fieldConstants.reserve(fieldCount);
287
288 // Add default value for each struct field
289
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 89 for (size_t i = 0; i < fieldCount; i++) {
290 // Get entry of the field
291
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 63 const SymbolTableEntry *fieldEntry = structScope->lookupField(i);
292
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 63 assert(fieldEntry != nullptr && fieldEntry->isField());
293
294 // Retrieve default field value
295 llvm::Constant *defaultFieldValue;
296
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 63 if (const auto fieldNode = dynamic_cast<FieldNode *>(fieldEntry->declNode); fieldNode && fieldNode->defaultValue)
297
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 4 defaultFieldValue = getConst(fieldNode->defaultValue->getCompileTimeValue(), fieldEntry->getQualType(), fieldNode);
298 else
299
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 59 defaultFieldValue = getDefaultValueForSymbolType(fieldEntry->getQualType());
300
301
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 63 fieldConstants.push_back(defaultFieldValue);
302 }
303
304
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 26 const auto structType = reinterpret_cast<llvm::StructType *>(symbolType.toLLVMType(sourceFile));
305
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 26 return llvm::ConstantStruct::get(structType, fieldConstants);
306 26 }
307
308 // Interface
309
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 1 if (symbolType.is(TY_INTERFACE)) {
310 1 const auto structType = reinterpret_cast<llvm::StructType *>(symbolType.toLLVMType(sourceFile));
311 1 return llvm::ConstantStruct::get(structType, llvm::Constant::getNullValue(builder.getPtrTy()));
312 }
313
314 − throw CompilerError(INTERNAL_ERROR, "Cannot determine default value for symbol type"); // GCOV_EXCL_LINE
315 }
316
317 18455 llvm::Constant *IRGenerator::getConst(const CompileTimeValue &compileTimeValue, const QualType &type, const ASTNode *node) const {
318
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 18455 if (type.is(TY_DOUBLE))
319
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 623 return llvm::ConstantFP::get(context, llvm::APFloat(compileTimeValue.doubleValue));
320
321
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 17832 if (type.is(TY_INT))
322 3728 return builder.getInt32(compileTimeValue.intValue);
323
324
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 14104 if (type.is(TY_SHORT))
325 879 return builder.getInt16(compileTimeValue.shortValue);
326
327
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 13225 if (type.is(TY_LONG))
328 6586 return builder.getInt64(compileTimeValue.longValue);
329
330
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 6639 if (type.isOneOf({TY_BYTE, TY_CHAR}))
331 2519 return builder.getInt8(compileTimeValue.charValue);
332
333
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 4120 if (type.is(TY_STRING)) {
334 2137 const std::string &stringValue = resourceManager.compileTimeStringValues.at(compileTimeValue.stringValueOffset);
335
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 6411 return createGlobalStringConst(ANON_GLOBAL_STRING_NAME, stringValue, node->codeLoc);
336 }
337
338
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 1983 if (type.is(TY_BOOL))
339 1983 return builder.getInt1(compileTimeValue.boolValue);
340
341 ✗ if (type.is(TY_PTR))
342 ✗ return llvm::Constant::getNullValue(builder.getPtrTy());
343
344 − throw CompilerError(UNHANDLED_BRANCH, "Constant fall-through"); // GCOV_EXCL_LINE
345 }
346
347 34948 llvm::BasicBlock *IRGenerator::createBlock(const std::string &blockName /*=""*/) const {
348
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 34948 return llvm::BasicBlock::Create(context, blockName);
349 }
350
351 34948 void IRGenerator::switchToBlock(llvm::BasicBlock *block, llvm::Function *parentFct /*=nullptr*/) {
352
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 34948 assert(block->getParent() == nullptr); // Ensure that the block was not added to a function already
353 // If no parent function were passed, use the current function
354
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 34948 if (!parentFct)
355 23220 parentFct = builder.GetInsertBlock()->getParent();
356 // Append block to current function
357 34948 parentFct->insert(parentFct->end(), block);
358 // Set insert point to the block
359 34948 builder.SetInsertPoint(block);
360 34948 blockAlreadyTerminated = false;
361 34948 }
362
363 10391 void IRGenerator::terminateBlock(const StmtLstNode *stmtLstNode) {
364 10391 diGenerator.setSourceLocation(stmtLstNode->closingBraceCodeLoc);
365 10391 generateScopeCleanup(stmtLstNode);
366 10391 blockAlreadyTerminated = true;
367 10391 }
368
369 12851 void IRGenerator::insertJump(llvm::BasicBlock *targetBlock) {
370
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 12851 if (blockAlreadyTerminated)
371 3674 return;
372 9177 builder.CreateBr(targetBlock);
373 9177 blockAlreadyTerminated = true;
374 }
375
376 9642 void IRGenerator::insertCondJump(llvm::Value *condition, llvm::BasicBlock *trueBlock, llvm::BasicBlock *falseBlock,
377 Likelihood likelihood /*=UNSPECIFIED*/) {
378
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 9642 if (blockAlreadyTerminated)
379 ✗ return;
380 9642 llvm::BranchInst *jumpInst = builder.CreateCondBr(condition, trueBlock, falseBlock);
381 9642 blockAlreadyTerminated = true;
382
383
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 9642 if (likelihood != Likelihood::UNSPECIFIED)
384 1222 mdGenerator.generateBranchWeightsMetadata(jumpInst, likelihood);
385 }
386
387 11728 void IRGenerator::verifyFunction(const llvm::Function *fct, const CodeLoc &codeLoc) const {
388 // Skip the verifying step if the verifier was disabled manually or debug info is emitted
389
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 11728 if (cliOptions.disableVerifier || cliOptions.instrumentation.generateDebugInfo)
390 207 return;
391
392 // Verify function
393 11521 std::string output;
394
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 11521 llvm::raw_string_ostream oss(output);
395 − if (llvm::verifyFunction(*fct, &oss)) // LCOV_EXCL_LINE
396 − throw CompilerError(codeLoc, INVALID_FUNCTION, output); // LCOV_EXCL_LINE
397 11521 }
398
399 992 void IRGenerator::verifyModule(const CodeLoc &codeLoc) const {
400 // Skip the verifying step if the verifier was disabled manually or debug info is emitted
401
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 992 if (cliOptions.disableVerifier || cliOptions.instrumentation.generateDebugInfo)
402 25 return;
403
404 // Verify module
405 967 std::string output;
406
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 967 llvm::raw_string_ostream oss(output);
407 − if (llvm::verifyModule(*module, &oss)) // LCOV_EXCL_LINE
408 − throw CompilerError(codeLoc, INVALID_MODULE, output); // LCOV_EXCL_LINE
409 967 }
410
411 5768 LLVMExprResult IRGenerator::doAssignment(const ASTNode *lhsNode, const ExprNode *rhsNode, const ASTNode *node) {
412 // Get entry of left side
413
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 5768 auto [value, constant, ptr, refPtr, entry, _] = std::any_cast<LLVMExprResult>(visit(lhsNode));
414
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 5768 llvm::Value *lhsAddress = entry != nullptr && entry->getQualType().isRef() ? refPtr : ptr;
415
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 11536 return doAssignment(lhsAddress, entry, rhsNode, node);
416 }
417
418 13978 LLVMExprResult IRGenerator::doAssignment(llvm::Value *lhsAddress, SymbolTableEntry *lhsEntry, const ExprNode *rhsNode,
419 const ASTNode *node, bool isDecl) {
420 // Get symbol type of right side
421
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 13978 const QualType &rhsSType = rhsNode->getEvaluatedSymbolType(manIdx);
422
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 13978 auto rhs = std::any_cast<LLVMExprResult>(visit(rhsNode));
423
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 27956 return doAssignment(lhsAddress, lhsEntry, rhs, rhsSType, node, isDecl);
424 }
425
426 14096 LLVMExprResult IRGenerator::doAssignment(llvm::Value *lhsAddress, SymbolTableEntry *lhsEntry, LLVMExprResult &rhs,
427 const QualType &rhsSType, const ASTNode *node, bool isDecl) {
428 // Deduce some information about the assignment
429
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 14096 const bool isRefAssign = lhsEntry != nullptr && lhsEntry->getQualType().isRef();
430
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 14096 const bool needsCopy = !isRefAssign && rhsSType.removeReferenceWrapper().is(TY_STRUCT) && !rhs.isTemporary();
431
432
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 14096 if (isRefAssign) {
433
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 504 assert(lhsEntry != nullptr);
434
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 504 if (isDecl) { // Reference gets initially assigned
435 // Get address of right side
436 254 llvm::Value *rhsAddress = resolveAddress(rhs);
437
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 254 assert(rhsAddress != nullptr);
438
439 // Store lhs pointer to rhs
440
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 254 llvm::Value *refAddress = insertAlloca(builder.getPtrTy());
441 254 lhsEntry->updateAddress(refAddress);
442 254 insertStore(rhsAddress, refAddress);
443
444 254 return LLVMExprResult{.value = rhsAddress, .ptr = refAddress, .entry = lhsEntry};
445 }
446
447 // Reference to reference assignment (only for struct fields that are not initialized yet)
448 // These are only allowed inside a ctor body. In other cases, the value of the reference gets assigned, not the ref itself.
449
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 250 const bool isInitialFieldRefAssign = isInCtorBody && rhsSType.isRef() && rhs.entry && lhsEntry->isField();
450 // Assigning the result variable
451 250 const bool isReturnValAssign = lhsEntry->name == RETURN_VARIABLE_NAME;
452
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 250 if (isInitialFieldRefAssign || isReturnValAssign) {
453 // Get address of right side
454 169 llvm::Value *referencedAddress = resolveAddress(rhs);
455
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 169 assert(referencedAddress != nullptr);
456
457 // Store the rhs* to the lhs**
458 169 insertStore(referencedAddress, lhsAddress);
459
460 169 return LLVMExprResult{.value = referencedAddress, .ptr = lhsAddress, .entry = lhsEntry};
461 }
462
463 // Load referenced address
464
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 162 lhsAddress = insertLoad(builder.getPtrTy(), lhsAddress);
465 }
466
467
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 13673 if (isDecl && rhsSType.is(TY_STRUCT) && rhs.isTemporary()) {
468
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 955 assert(lhsEntry != nullptr);
469 // Directly set the address to the lhs entry (temp stealing)
470 955 llvm::Value *rhsAddress = resolveAddress(rhs);
471 955 lhsEntry->updateAddress(rhsAddress);
472 955 rhs.entry = lhsEntry;
473 955 return rhs;
474 }
475
476 // Allocate new memory if the lhs address does not exist
477
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 12718 if (!lhsAddress) {
478
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 7089 assert(lhsEntry != nullptr);
479
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 7089 lhsAddress = insertAlloca(lhsEntry->getQualType());
480 7089 lhsEntry->updateAddress(lhsAddress);
481 }
482
483 // 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
484
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 12718 if (lhsEntry && lhsEntry->getQualType().isPtr() && rhsSType.isArray() && rhsSType.getArraySize() != ARRAY_SIZE_UNKNOWN) {
485 // Get address of right side
486
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 2 llvm::Value *rhsAddress = resolveAddress(rhs);
487
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 2 assert(rhsAddress != nullptr);
488
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 2 llvm::Type *elementTy = rhsSType.toLLVMType(sourceFile);
489
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 2 llvm::Value *indices[2] = {builder.getInt64(0), builder.getInt32(0)};
490
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 2 llvm::Value *firstItemAddress = insertInBoundsGEP(elementTy, rhsAddress, indices);
491
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 2 insertStore(firstItemAddress, lhsAddress);
492 2 return LLVMExprResult{.value = rhsAddress, .ptr = lhsAddress, .entry = lhsEntry};
493 }
494
495 // Check if we need to copy the rhs to the lhs. This happens for structs
496
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 12716 if (needsCopy) {
497 // Get address of right side
498
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 182 llvm::Value *rhsAddress = resolveAddress(rhs);
499
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 182 assert(rhsAddress != nullptr);
500
501
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 182 const QualType rhsSTypeNonRef = rhsSType.removeReferenceWrapper().toNonConst();
502
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 182 if (rhsSTypeNonRef.isTriviallyCopyable(node)) {
503 // Create shallow copy
504
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 105 llvm::Type *rhsType = rhsSTypeNonRef.toLLVMType(sourceFile);
505
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 110 const std::string copyName = lhsEntry ? lhsEntry->name : "";
506
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 105 generateShallowCopy(rhsAddress, rhsType, lhsAddress, lhsEntry && lhsEntry->isVolatile);
507 105 } else {
508 // Check if we have a copy ctor
509
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 77 Scope *structScope = rhsSTypeNonRef.getBodyScope();
510
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 231 const ArgList args = {{rhsSTypeNonRef.toConstRef(node), rhs.isTemporary()}};
511
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 77 const Function *copyCtor = FunctionManager::lookup(structScope, CTOR_FUNCTION_NAME, rhsSTypeNonRef, args, true);
512
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 77 if (copyCtor != nullptr) {
513 // Call copy ctor
514
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 231 generateCtorOrDtorCall(lhsAddress, copyCtor, {rhsAddress});
515 } else {
516 ✗ const std::string structName = rhsSTypeNonRef.getName();
517 ✗ const std::string msg = "Cannot copy struct '" + structName + "', as it is not trivially copyable and has no copy ctor";
518 ✗ throw SemanticError(node, COPY_CTOR_REQUIRED, msg);
519 ✗ }
520 77 }
521 182 return LLVMExprResult{.ptr = lhsAddress, .entry = lhsEntry};
522 }
523
524 // Optimization: If we have the address of both sides, we can do a memcpy instead of loading and storing the value
525 12534 llvm::Value *rhsValue = nullptr;
526
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 12534 if (rhsSType.is(TY_STRUCT) && rhs.value == nullptr && rhs.constant == nullptr) {
527 // Create shallow copy
528
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 223 const QualType rhsSTypeNonRef = rhsSType.removeReferenceWrapper().toNonConst();
529
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 223 llvm::Type *rhsType = rhsSTypeNonRef.toLLVMType(sourceFile);
530
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 223 llvm::Value *rhsAddress = resolveAddress(rhs);
531
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 223 assert(rhsAddress != nullptr);
532
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 224 const std::string copyName = lhsEntry ? lhsEntry->name : "";
533
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 223 generateShallowCopy(rhsAddress, rhsType, lhsAddress, lhsEntry && lhsEntry->isVolatile);
534 223 } else {
535 // We can load the value from the right side and store it to the left side
536 // Retrieve value of the right side
537 12311 rhsValue = resolveValue(rhsSType, rhs);
538 // Store the value to the address
539 12311 insertStore(rhsValue, lhsAddress, rhsSType);
540 }
541
542 12534 return LLVMExprResult{.value = rhsValue, .ptr = lhsAddress, .entry = lhsEntry};
543 }
544
545 367 void IRGenerator::generateShallowCopy(llvm::Value *oldAddress, llvm::Type *varType, llvm::Value *targetAddress,
546 bool isVolatile) const {
547 // Retrieve size to copy
548
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 367 const llvm::TypeSize typeSize = module->getDataLayout().getTypeAllocSize(varType);
549
550 // Create values for memcpy intrinsic
551
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 367 llvm::Value *structSize = builder.getInt64(typeSize);
552
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 367 llvm::Value *copyVolatile = builder.getInt1(isVolatile);
553
554 // Call memcpy intrinsic to execute the shallow copy
555
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 367 llvm::Function *memcpyFct = stdFunctionManager.getMemcpyIntrinsic();
556
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 367 assert(targetAddress != nullptr);
557
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 367 builder.CreateCall(memcpyFct, {targetAddress, oldAddress, structSize, copyVolatile});
558 367 }
559
560 23291 void IRGenerator::autoDeReferencePtr(llvm::Value *&ptr, QualType &symbolType) {
561
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 41704 while (symbolType.isPtr() || symbolType.isRef()) {
562
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 18413 ptr = insertLoad(symbolType, ptr);
563
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 18413 symbolType = symbolType.getContained();
564 }
565 23291 }
566
567 57 llvm::GlobalVariable *IRGenerator::createGlobalConst(const std::string &baseName, llvm::Constant *constant) const {
568 // Get unused name
569
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 57 const std::string globalName = getUnusedGlobalName(baseName);
570 // Create global
571
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 57 module->getOrInsertGlobal(globalName, constant->getType());
572
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 57 llvm::GlobalVariable *global = module->getNamedGlobal(globalName);
573 // Set initializer to the given constant
574
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 57 global->setInitializer(constant);
575 57 global->setConstant(true);
576
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 57 global->setLinkage(llvm::GlobalValue::PrivateLinkage);
577 57 global->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global);
578 57 return global;
579 57 }
580
581 2980 llvm::GlobalVariable *IRGenerator::createGlobalStringConst(const std::string &baseName, const std::string &value) const {
582 // Get unused name
583
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 2980 const std::string globalName = getUnusedGlobalName(baseName);
584 // Create global
585
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 2980 builder.CreateGlobalString(value, globalName, 0, module);
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 2980 llvm::GlobalVariable *global = module->getNamedGlobal(globalName);
587 // If the output should be comparable, fix alignment to 4 bytes
588
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 2980 if (cliOptions.comparableOutput)
589
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 2980 global->setAlignment(llvm::Align(4));
590 2980 return global;
591 2980 }
592
593 2980 llvm::GlobalVariable *IRGenerator::createGlobalStringConst(const std::string &baseName, const std::string &value,
594 const CodeLoc &codeLoc) const {
595 2980 llvm::GlobalVariable *global = createGlobalStringConst(baseName, value);
596 // Create debug info
597
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 2980 if (cliOptions.instrumentation.generateDebugInfo)
598
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 48 diGenerator.generateGlobalStringDebugInfo(global, global->getName().str(), value.length(), codeLoc);
599 2980 return global;
600 }
601
602 4987 std::string IRGenerator::getUnusedGlobalName(const std::string &baseName) const {
603 // Find an unused global name
604 4987 std::string globalName;
605 4987 unsigned int suffixNumber = 0;
606 do {
607
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 130560 globalName = baseName + std::to_string(suffixNumber);
608 130560 suffixNumber++;
609
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 130560 } while (module->getNamedGlobal(globalName) != nullptr);
610 4987 return globalName;
611 ✗ }
612
613 19120 void IRGenerator::materializeConstant(LLVMExprResult &exprResult) {
614 // Skip results, that do not contain a constant or already have a value
615
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 19120 if (exprResult.value != nullptr || exprResult.constant == nullptr)
616 401 return;
617
618 // Default case: the value to the constant
619 18719 exprResult.value = exprResult.constant;
620 }
621
622 1907 std::string IRGenerator::getIRString(llvm::Module *llvmModule, const CliOptions &cliOptions) {
623
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 1907 assert(llvmModule != nullptr); // Make sure the module hasn't been moved away
624
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 1907 const bool eliminateTarget = cliOptions.comparableOutput && cliOptions.isNativeTarget;
625
626 // Backup target triple and data layout
627
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 1907 const llvm::Triple targetTriple = llvmModule->getTargetTriple();
628
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 1907 const std::string targetDataLayout = llvmModule->getDataLayoutStr();
629 // Remove target triple and data layout
630
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 1907 if (eliminateTarget) {
631 1809 llvmModule->setTargetTriple(llvm::Triple());
632
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 1809 llvmModule->setDataLayout("");
633 }
634
635 // Get IR string
636 1907 std::string output;
637
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 1907 llvm::raw_string_ostream oss(output);
638
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 1907 llvmModule->print(oss, nullptr);
639
640 // Restore target triple and data layout
641
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 1907 if (eliminateTarget) {
642
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 1809 llvmModule->setTargetTriple(targetTriple);
643
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 1809 llvmModule->setDataLayout(targetDataLayout);
644 }
645
646 1907 return output;
647 1907 }
648
649 /**
650 * Returns the operator function list for the current manifestation and the given node
651 *
652 * @param node Node to retrieve the op fct pointer list from
653 * @return Op fct pointer list
654 */
655 19910 const std::vector<const Function *> &IRGenerator::getOpFctPointers(const ASTNode *node) const {
656
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 19910 assert(node->getOpFctPointers()->size() > manIdx);
657 19910 return node->getOpFctPointers()->at(manIdx);
658 }
659
660 } // namespace spice::compiler
661