GCC Code Coverage Report

Directory: ../
Coverage: low: ≥ 0% medium: ≥ 75.0% high: ≥ 90.0%
Coverage Exec / Excl / Total
Lines: 91.6% 469 / 0 / 512
Functions: 96.4% 27 / 0 / 28
Branches: 50.2% 582 / 0 / 1160
src/irgenerator/GenImplicit.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 <ast/ASTNodes.h>
7 #include <ast/Attributes.h>
8 #include <driver/Driver.h>
9 #include <global/GlobalResourceManager.h>
10 #include <model/Function.h>
11 #include <symboltablebuilder/SymbolTableBuilder.h>
12 #include <typechecker/FunctionManager.h>
13
14 #include <llvm/IR/Module.h>
15
16 namespace spice::compiler {
17
18 // String placeholders for builtin testing output
19 static const char *const TEST_ALL_START_MSG = "[==========] Running %d test(s) from %d source file(s)\n";
20 static const char *const TEST_ALL_END_MSG = "[==========] Ran %d test(s) from %d source file(s)\n";
21 static const char *const TEST_FILE_START_MSG = "[----------] Running %d test(s) from %s\n";
22 static const char *const TEST_FILE_END_MSG = "[----------] Ran %d test(s) from %s\n\n";
23 static const char *const TEST_CASE_RUN_MSG = "[ RUN ] %s\n";
24 static const char *const TEST_CASE_SUCCESS_MSG = "\033[1m\033[32m[ PASSED ]\033[0m\033[22m %s\n";
25 static const char *const TEST_CASE_FAILED_MSG = "\033[1m\033[31m[ FAILED ]\033[0m\033[22m %s\n";
26 static const char *const TEST_CASE_SKIPPED_MSG = "\033[1m\033[33m[ SKIPPED ]\033[0m\033[22m %s\n";
27
28 241 llvm::Value *IRGenerator::doImplicitCast(llvm::Value *src, QualType dstSTy, QualType srcSTy) {
29
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 241 assert(srcSTy != dstSTy); // We only need to cast implicitly, if the types do not match exactly
30
31 // Unpack the pointers until a pointer of another type is met
32 241 size_t loadCounter = 0;
33
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 241 while (srcSTy.isPtr()) {
34 ✗ src = insertLoad(srcSTy, src);
35 ✗ srcSTy = srcSTy.getContained();
36 ✗ dstSTy = dstSTy.getContained();
37 ✗ loadCounter++;
38 }
39 // GEP or bit-cast
40
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 241 if (dstSTy.isArray() && srcSTy.isArray()) { // Special case that is used for passing arrays as pointer to functions
41
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 241 llvm::Value *indices[2] = {builder.getInt64(0), builder.getInt32(0)};
42
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 241 src = insertInBoundsGEP(srcSTy.toLLVMType(sourceFile), src, indices);
43 } else {
44 ✗ src = insertLoad(srcSTy, src);
45 ✗ src = builder.CreateBitCast(src, dstSTy.toLLVMType(sourceFile));
46 }
47 // Pack the pointers together again
48
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 241 for (; loadCounter > 0; loadCounter--) {
49 ✗ llvm::Value *newActualArg = insertAlloca(srcSTy);
50 ✗ insertStore(src, newActualArg);
51 ✗ src = newActualArg;
52 }
53 241 return src;
54 }
55
56 469 llvm::Value *IRGenerator::getUpcastedStructPtr(llvm::Value *structPtr, const QualType &dstType, const QualType &srcType) const {
57 // Adjusts a pointer to a struct instance so it points at the embedded subobject the destination type
58 // refers to. This backs the explicit 'cast<Base*>(derived)' / 'cast<Interface*>(struct)' conversions.
59 // When the struct carries a vtable prefix (because it implements interfaces), the composed base no longer
60 // sits at offset 0, so the pointer has to be advanced via a GEP. For subobjects that already sit at offset
61 // 0 (e.g. the leading interface field), insertStructGEP() with index 0 is a no-op and returns the pointer
62 // unchanged, so no superfluous IR is emitted. If the given pair of types is not such an upcast, the
63 // pointer is returned unchanged.
64
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 469 QualType dstPointee = dstType.removeReferenceWrapper();
65
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 469 QualType srcPointee = srcType.removeReferenceWrapper();
66 // Both sides are pointers ('structPtr' is the pointer value itself), so look one level deeper
67
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 469 if (dstPointee.isPtr() && srcPointee.isPtr()) {
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 469 dstPointee = dstPointee.getContained();
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 469 srcPointee = srcPointee.getContained();
70 }
71 // Bail out if this is not an interface/composed-base upcast that requires a pointer adjustment
72
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 469 if (!srcPointee.is(TY_STRUCT))
73 ✗ return structPtr;
74
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 469 if (!dstPointee.matchesInterfaceImplementedByStruct(srcPointee) && !dstPointee.matchesComposedBaseOfStruct(srcPointee))
75 ✗ return structPtr;
76
77 469 QualType walkType = srcPointee;
78
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 1292 while (!walkType.matches(dstPointee, false, true, true)) {
79
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 830 assert(walkType.is(TY_STRUCT));
80
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 830 Scope *structScope = walkType.getBodyScope();
81
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 830 assert(structScope != nullptr);
82
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 830 const Struct *spiceStruct = walkType.getStruct(nullptr);
83
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 830 assert(spiceStruct != nullptr);
84
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 830 llvm::Type *llvmStructType = walkType.toLLVMType(sourceFile);
85 // Implicit (interface) fields are inserted before the explicit fields, so their count is the difference
86 // between the total field count and the number of explicit fields.
87
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 830 const size_t implicitFieldCount = structScope->getFieldCount() - spiceStruct->fieldTypes.size();
88
89 // Case 1: the destination is an interface implemented directly by the struct -> step into its implicit field
90
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 830 if (dstPointee.is(TY_INTERFACE)) {
91 7 bool found = false;
92
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 7 for (size_t i = 0; i < implicitFieldCount; i++) {
93
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 7 const SymbolTableEntry *implicitField = structScope->lookupField(i);
94
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 7 if (dstPointee.matches(implicitField->getQualType(), false, true, true)) {
95
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 7 structPtr = insertStructGEP(llvmStructType, structPtr, implicitField->orderIndex);
96 7 found = true;
97 7 break;
98 }
99 }
100
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 7 assert(found);
101 (void)found;
102 7 return structPtr;
103 }
104
105 // Case 2: the destination is a composed base struct -> step into the first explicit (composed) field
106
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 823 const SymbolTableEntry *baseField = structScope->lookupField(implicitFieldCount);
107
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 823 assert(baseField != nullptr && baseField->getQualType().isComposition());
108
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 823 structPtr = insertStructGEP(llvmStructType, structPtr, baseField->orderIndex);
109
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 823 walkType = baseField->getQualType();
110 }
111 462 return structPtr;
112 }
113
114 135431 void IRGenerator::generateScopeCleanup(const StmtLstNode *node) {
115 135431 diGenerator.setSourceLocation(node->closingBraceCodeLoc);
116
117 // Do not clean up if the block is already terminated
118
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 135431 if (blockAlreadyTerminated)
119 41411 return;
120
121 // Call all dtor functions
122 94020 const auto &[dtorFunctionsToCall, heapVarsToFree] = node->resourcesToCleanup.at(manIdx);
123
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 199776 for (auto [entry, dtor] : dtorFunctionsToCall)
124
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 5868 generateCtorOrDtorCall(entry, dtor, {});
125
126 // Deallocate all heap variables that go out of scope and are currently owned
127
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 188475 for (const SymbolTableEntry *entry : heapVarsToFree)
128
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 435 generateDeallocCall(getAddress(entry));
129
130 // Generate lifetime end markers
131
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 94020 if (cliOptions.useLifetimeMarkers) {
132
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 3682 for (const SymbolTableEntry *var : currentScope->getVarsGoingOutOfScope()) {
133
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 510 llvm::Value *address = getAddress(var);
134
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 510 if (address != nullptr)
135
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 466 builder.CreateLifetimeEnd(address);
136 1586 }
137 }
138 }
139
140 /**
141 * Generate cleanup code (dtor calls, deallocations) for every scope between the given node (exclusive) and the given
142 * target scope (inclusive). This is required for jumps that leave more than one scope at once (e.g. break/continue/return),
143 * since those skip the normal fall-through cleanup that visitStmtLst() generates for each of the enclosing scopes.
144 *
145 * @param node Node the jump originates from
146 * @param targetScope Outermost scope that is left by the jump; cleanup is generated for this scope as well
147 */
148 37015 void IRGenerator::generateScopeCleanupUpTo(const ASTNode *node, const Scope *targetScope) {
149
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 37015 assert(targetScope != nullptr);
150 37015 const StmtLstNode *scope = node->getNextOuterStmtLst();
151 37015 const Scope *scopeLevel = currentScope;
152 while (true) {
153 56689 generateScopeCleanup(scope);
154
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 56689 if (scopeLevel == targetScope)
155 37015 break;
156
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 19674 assert(scope->parent != nullptr && scopeLevel->parent != nullptr);
157 19674 scope = scope->parent->getNextOuterStmtLst();
158 19674 scopeLevel = scopeLevel->parent;
159 }
160 37015 }
161
162 10728 void IRGenerator::generateFctDecl(const Function *fct, const std::vector<llvm::Value *> &args) const {
163 // Retrieve metadata for the function
164
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 10728 const std::string mangledName = fct->getMangledName();
165
166 // Function is not defined in the current module -> declare it
167
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 10728 if (!module->getFunction(mangledName)) {
168 2633 std::vector<llvm::Type *> paramTypes;
169
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 8632 for (const llvm::Value *argValue : args)
170
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 3366 paramTypes.push_back(argValue->getType());
171
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 2633 llvm::Type *returnType = fct->isFunction() ? fct->returnType.toLLVMType(sourceFile) : builder.getVoidTy();
172
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 2633 llvm::FunctionType *fctType = llvm::FunctionType::get(returnType, paramTypes, false);
173
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 2633 module->getOrInsertFunction(mangledName, fctType);
174
175
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 2633 if (fct->isMethod()) {
176 // Get callee function
177
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 2633 llvm::Function *callee = module->getFunction(mangledName);
178
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 2633 assert(callee != nullptr);
179
180 // Set attributes to 'this' param
181 // Get 'this' entry
182
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 7899 const SymbolTableEntry *thisEntry = fct->bodyScope->lookupStrict(THIS_VARIABLE_NAME);
183
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 2633 assert(thisEntry != nullptr);
184
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 2633 llvm::Type *structType = thisEntry->getQualType().getContained().toLLVMType(sourceFile);
185
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 2633 assert(structType != nullptr);
186
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 2633 callee->addParamAttr(0, llvm::Attribute::NoUndef);
187
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 2633 callee->addParamAttr(0, llvm::Attribute::NonNull);
188
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 2633 callee->addDereferenceableParamAttr(0, module->getDataLayout().getTypeStoreSize(structType));
189
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 2633 callee->addParamAttr(0, llvm::Attribute::getWithAlignment(context, module->getDataLayout().getABITypeAlign(structType)));
190 }
191 2633 }
192 10728 }
193
194 10728 llvm::CallInst *IRGenerator::generateFctCall(const Function *fct, const std::vector<llvm::Value *> &args) const {
195 // Retrieve metadata for the function
196
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 10728 const std::string mangledName = fct->getMangledName();
197
198 // Get callee function
199
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 10728 llvm::Function *callee = module->getFunction(mangledName);
200
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 10728 assert(callee != nullptr);
201
202 // Generate function call
203
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 10728 llvm::CallInst *callInst = builder.CreateCall(callee, args);
204
205 // Set attributes to 'this' param
206
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 10728 if (fct->isMethod()) {
207 // Get 'this' entry
208
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 32184 const SymbolTableEntry *thisEntry = fct->bodyScope->lookupStrict(THIS_VARIABLE_NAME);
209
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 10728 assert(thisEntry != nullptr);
210
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 10728 llvm::Type *structType = thisEntry->getQualType().getContained().toLLVMType(sourceFile);
211
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 10728 assert(structType != nullptr);
212
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 10728 callInst->addParamAttr(0, llvm::Attribute::NoUndef);
213
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 10728 callInst->addParamAttr(0, llvm::Attribute::NonNull);
214
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 10728 callInst->addDereferenceableParamAttr(0, module->getDataLayout().getTypeStoreSize(structType));
215
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 10728 callInst->addParamAttr(0, llvm::Attribute::getWithAlignment(context, module->getDataLayout().getABITypeAlign(structType)));
216 }
217
218 10728 return callInst;
219 10728 }
220
221 ✗ llvm::Value *IRGenerator::generateFctDeclAndCall(const Function *fct, const std::vector<llvm::Value *> &args) const {
222 ✗ generateFctDecl(fct, args);
223 ✗ return generateFctCall(fct, args);
224 }
225
226 10728 void IRGenerator::generateProcDeclAndCall(const Function *proc, const std::vector<llvm::Value *> &args) const {
227 10728 generateFctDecl(proc, args);
228 10728 (void)generateFctCall(proc, args);
229 10728 }
230
231 8064 void IRGenerator::generateCtorOrDtorCall(const SymbolTableEntry *entry, const Function *ctorOrDtor,
232 const std::vector<llvm::Value *> &args) {
233 // Retrieve address of the struct variable. For fields this is the 'this' variable, otherwise use the normal address
234 llvm::Value *structAddr;
235
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 8064 if (entry->isField()) {
236 // Take 'this' var as base pointer
237
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 3417 const SymbolTableEntry *thisVar = currentScope->lookupStrict(THIS_VARIABLE_NAME);
238
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 1139 assert(thisVar != nullptr);
239
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 1139 assert(thisVar->getQualType().isPtr() && thisVar->getQualType().getContained().is(TY_STRUCT));
240
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 1139 llvm::Type *thisType = thisVar->getQualType().getContained().toLLVMType(sourceFile);
241
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 1139 llvm::Value *thisPtr = insertLoad(builder.getPtrTy(), getAddress(thisVar));
242 // Add field offset
243
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 1139 structAddr = insertStructGEP(thisType, thisPtr, entry->orderIndex);
244 } else {
245 6925 structAddr = getAddress(entry);
246 // For optional parameter initializers we need this exception
247
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 6925 if (!structAddr)
248 263 return;
249 }
250
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 7801 assert(structAddr != nullptr);
251 7801 generateCtorOrDtorCall(structAddr, ctorOrDtor, args);
252 }
253
254 10728 void IRGenerator::generateCtorOrDtorCall(llvm::Value *structAddr, const Function *ctorOrDtor,
255 const std::vector<llvm::Value *> &args) const {
256 // Build parameter list
257
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 21456 std::vector argValues = {structAddr};
258
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 21456 argValues.insert(argValues.end(), args.begin(), args.end());
259
260 // Generate function call
261
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 10728 generateProcDeclAndCall(ctorOrDtor, argValues);
262 10728 }
263
264 594 void IRGenerator::generateDeallocCall(llvm::Value *variableAddress) const {
265 // Abort if the address is not set. This can happen when leaving the scope of a dtor, which already freed the heap memory
266
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 594 if (!variableAddress)
267 276 return;
268
269 // In case of string runtime, call free manually. Otherwise, use the memory_rt implementation of sDealloc()
270
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 636 if (sourceFile->isStringRT()) {
271 ✗ llvm::Function *freeFct = stdFunctionManager.getFreeFct();
272 ✗ builder.CreateCall(freeFct, variableAddress);
273 } else {
274 318 llvm::Function *deallocFct = stdFunctionManager.getDeallocBytePtrRefFct();
275
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 318 builder.CreateCall(deallocFct, variableAddress);
276 }
277 }
278
279 4 llvm::Function *IRGenerator::generateImplicitFunction(const std::function<void()> &generateBody, const Function *spiceFunc) {
280 // Only focus on method procedures
281
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 4 const ASTNode *node = spiceFunc->entry->declNode;
282
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 4 assert(spiceFunc->isFunction());
283
284 // Only generate if used
285
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 4 if (!spiceFunc->used)
286 ✗ return nullptr;
287
288 // Retrieve return type
289
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 4 llvm::Type *returnType = spiceFunc->returnType.toLLVMType(sourceFile);
290
291 // Get 'this' entry
292 4 std::vector<llvm::Type *> paramTypes;
293
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 4 const SymbolTableEntry *thisEntry = nullptr;
294
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 4 if (spiceFunc->isMethod()) {
295 ✗ thisEntry = spiceFunc->bodyScope->lookupStrict(THIS_VARIABLE_NAME);
296 ✗ assert(thisEntry != nullptr);
297 ✗ paramTypes.push_back(builder.getPtrTy());
298 }
299
300 // Get parameter types
301
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 8 for (const auto &[qualType, isOptional] : spiceFunc->paramList) {
302 ✗ assert(!isOptional);
303 ✗ paramTypes.push_back(qualType.toLLVMType(sourceFile));
304 }
305
306 // Get function linkage
307
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 4 const bool isPublic = spiceFunc->entry->getQualType().isPublic();
308
309 // Create function
310
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 4 const std::string mangledName = spiceFunc->getMangledName();
311
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 4 llvm::FunctionType *fctType = llvm::FunctionType::get(returnType, paramTypes, false);
312
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 4 const llvm::GlobalObject::LinkageTypes linkage = getSymbolLinkageType(isPublic);
313
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 4 llvm::Function *fct = llvm::Function::Create(fctType, linkage, mangledName, module);
314
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 4 fct->addFnAttr(llvm::Attribute::MustProgress);
315
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 4 addCommonFctAttrs(fct);
316
317 // Set attributes to 'this' param
318
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 4 if (spiceFunc->isMethod()) {
319 ✗ fct->addParamAttr(0, llvm::Attribute::NoUndef);
320 ✗ fct->addParamAttr(0, llvm::Attribute::NonNull);
321 ✗ assert(thisEntry != nullptr);
322 ✗ llvm::Type *structType = thisEntry->getQualType().getContained().toLLVMType(sourceFile);
323 ✗ assert(structType != nullptr);
324 ✗ fct->addDereferenceableParamAttr(0, module->getDataLayout().getTypeStoreSize(structType));
325 ✗ fct->addParamAttr(0, llvm::Attribute::getWithAlignment(context, module->getDataLayout().getABITypeAlign(structType)));
326 }
327
328 // Add debug info
329
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 4 diGenerator.generateFunctionDebugInfo(fct, spiceFunc);
330
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 4 if (node != nullptr)
331 ✗ diGenerator.setSourceLocation(node);
332
333 // Change to body scope
334
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 4 changeToScope(spiceFunc->getScopeName(), ScopeType::FUNC_PROC_BODY);
335
336 // Create entry block
337
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 4 llvm::BasicBlock *bEntry = createBlock();
338
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 4 switchToBlock(bEntry, fct);
339
340 // Reset alloca insert markers to this block
341 4 allocaInsertBlock = bEntry;
342
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 4 allocaInsertInst = nullptr;
343
344 // Store first argument to 'this' symbol
345
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 4 if (spiceFunc->isMethod()) {
346 ✗ assert(thisEntry != nullptr);
347 // Allocate space for the parameter
348 ✗ llvm::Value *thisAddress = insertAlloca(paramTypes.front(), THIS_VARIABLE_NAME);
349 // Update the symbol table entry
350 ✗ updateAddress(thisEntry, thisAddress);
351 // Generate debug info
352 ✗ diGenerator.generateLocalVarDebugInfo(THIS_VARIABLE_NAME, thisAddress, 1);
353 // Store the value at the new address
354 ✗ insertStore(fct->arg_begin(), thisAddress);
355 }
356
357 // Generate body
358
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 4 generateBody();
359
360 // Conclude debug info for function
361
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 4 diGenerator.concludeFunctionDebugInfo();
362
363 // Verify function
364 // Use the code location of the declaration node if available. Otherwise, (e.g. in case of test main) use an artificial code loc
365
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 4 const CodeLoc codeLoc = node != nullptr ? node->codeLoc : CodeLoc(1, 1, sourceFile);
366
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 4 verifyFunction(fct, codeLoc);
367
368 // Change to parent scope
369
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 4 changeToParentScope(ScopeType::FUNC_PROC_BODY);
370
371 4 return fct;
372 4 }
373
374 3767 llvm::Function *IRGenerator::generateImplicitProcedure(const std::function<void()> &generateBody, const Function *spiceProc) {
375 // Only focus on method procedures
376 3767 const ASTNode *node = spiceProc->entry->declNode;
377
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 3767 assert(node != nullptr);
378
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 3767 assert(spiceProc->isProcedure());
379
380 // Only generate if used
381
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 3767 if (!spiceProc->used)
382 2868 return nullptr;
383
384 // Get 'this' entry
385 899 std::vector<llvm::Type *> paramTypes;
386
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 899 const SymbolTableEntry *thisEntry = nullptr;
387
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 899 if (spiceProc->isMethod()) {
388
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 2697 thisEntry = spiceProc->bodyScope->lookupStrict(THIS_VARIABLE_NAME);
389
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 899 assert(thisEntry != nullptr);
390
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 899 paramTypes.push_back(builder.getPtrTy());
391 }
392
393 // Get parameter types
394
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 2039 for (const auto &[qualType, isOptional] : spiceProc->paramList) {
395
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 241 assert(!isOptional);
396
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 241 paramTypes.push_back(qualType.toLLVMType(sourceFile));
397 }
398
399 // Get function linkage
400
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 899 const bool isPublic = spiceProc->entry->getQualType().isPublic();
401
402 // Create function
403
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 899 const std::string mangledName = spiceProc->getMangledName();
404
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 899 llvm::FunctionType *fctType = llvm::FunctionType::get(builder.getVoidTy(), paramTypes, false);
405
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 899 const llvm::GlobalObject::LinkageTypes linkage = getSymbolLinkageType(isPublic);
406
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 899 llvm::Function *fct = llvm::Function::Create(fctType, linkage, mangledName, module);
407
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 899 fct->addFnAttr(llvm::Attribute::MustProgress);
408
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 899 addCommonFctAttrs(fct);
409
410 // Set attributes to 'this' param
411
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 899 if (spiceProc->isMethod()) {
412
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 899 fct->addParamAttr(0, llvm::Attribute::NoUndef);
413
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 899 fct->addParamAttr(0, llvm::Attribute::NonNull);
414
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 899 assert(thisEntry != nullptr);
415
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 899 llvm::Type *structType = thisEntry->getQualType().getContained().toLLVMType(sourceFile);
416
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 899 assert(structType != nullptr);
417
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 899 fct->addDereferenceableParamAttr(0, module->getDataLayout().getTypeStoreSize(structType));
418
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 899 fct->addParamAttr(0, llvm::Attribute::getWithAlignment(context, module->getDataLayout().getABITypeAlign(structType)));
419 }
420
421 // Add debug info
422
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 899 diGenerator.generateFunctionDebugInfo(fct, spiceProc);
423
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 899 diGenerator.setSourceLocation(node);
424
425 // Change to body scope
426
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 899 changeToScope(spiceProc->getScopeName(), ScopeType::FUNC_PROC_BODY);
427
428 // Create entry block
429
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 899 llvm::BasicBlock *bEntry = createBlock();
430
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 899 switchToBlock(bEntry, fct);
431
432 // Reset alloca insert markers to this block
433 899 allocaInsertBlock = bEntry;
434
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 899 allocaInsertInst = nullptr;
435
436 // Store first argument to 'this' symbol
437
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 899 if (spiceProc->isMethod()) {
438
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 899 assert(thisEntry != nullptr);
439 // Allocate space for the parameter
440
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 899 llvm::Value *thisAddress = insertAlloca(paramTypes.front(), THIS_VARIABLE_NAME);
441 // Update the symbol table entry
442
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 899 updateAddress(thisEntry, thisAddress);
443 // Generate debug info
444
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 1798 diGenerator.generateLocalVarDebugInfo(THIS_VARIABLE_NAME, thisAddress, 1);
445 // Store the value at the new address
446
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 899 insertStore(fct->arg_begin(), thisAddress);
447 }
448
449 // Generate body
450
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 899 generateBody();
451
452 // Create return instruction
453
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 899 builder.CreateRetVoid();
454
455 // Conclude debug info for function
456
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 899 diGenerator.concludeFunctionDebugInfo();
457
458 // Verify function
459
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 899 verifyFunction(fct, node->codeLoc);
460
461 // Change to parent scope
462
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 899 changeToParentScope(ScopeType::FUNC_PROC_BODY);
463
464 899 return fct;
465 899 }
466
467 6200 void IRGenerator::generateCtorBodyPreamble(Scope *bodyScope) {
468 // Retrieve struct scope
469 6200 Scope *structScope = bodyScope->parent;
470
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 6200 assert(structScope != nullptr);
471
472 // Get struct address
473
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 18600 const SymbolTableEntry *thisEntry = bodyScope->lookupStrict(THIS_VARIABLE_NAME);
474
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 6200 assert(thisEntry != nullptr);
475
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 6200 llvm::Value *thisPtrPtr = getAddress(thisEntry);
476
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 6200 assert(thisPtrPtr != nullptr);
477 6200 llvm::Value *thisPtr = nullptr;
478
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 6200 const QualType structSymbolType = thisEntry->getQualType().getBase();
479
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 6200 llvm::Type *structType = structSymbolType.toLLVMType(sourceFile);
480
481 // Store VTable to first struct field if required
482
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 6200 const Struct *spiceStruct = structSymbolType.getStruct(nullptr);
483
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 6200 assert(spiceStruct != nullptr);
484
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 6200 if (spiceStruct->vTableData.vtable != nullptr) {
485
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 1368 assert(spiceStruct->vTableData.vtableType != nullptr);
486 // Store VTable to field address at index 0
487
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 1368 thisPtr = insertLoad(builder.getPtrTy(), thisPtrPtr);
488
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 1368 llvm::Value *indices[3] = {builder.getInt64(0), builder.getInt32(0), builder.getInt32(2)};
489
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 1368 llvm::Value *gepResult = insertInBoundsGEP(spiceStruct->vTableData.vtableType, spiceStruct->vTableData.vtable, indices);
490
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 1368 insertStore(gepResult, thisPtr);
491 }
492
493
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 6200 const size_t fieldCount = structScope->getFieldCount();
494
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 21330 for (size_t fieldIdx = 0; fieldIdx < fieldCount; fieldIdx++) {
495
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 15130 const SymbolTableEntry *fieldSymbol = structScope->lookupField(fieldIdx);
496
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 15130 assert(fieldSymbol != nullptr && fieldSymbol->isField());
497
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 15130 if (fieldSymbol->isImplicitField)
498 1261 continue;
499
500 // Call ctor for struct fields
501
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 13869 const QualType &fieldType = fieldSymbol->getQualType();
502
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 13869 const auto fieldNode = spice_pointer_cast<FieldNode *>(fieldSymbol->declNode);
503
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 13869 if (fieldType.is(TY_STRUCT)) {
504 // Lookup ctor function and call if available
505
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 3411 Scope *matchScope = fieldType.getBodyScope();
506
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 10233 if (const Function *ctorFunction = FunctionManager::lookup(matchScope, CTOR_FUNCTION_NAME, fieldType, {}, false)) {
507
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 1879 if (!thisPtr)
508
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 375 thisPtr = insertLoad(builder.getPtrTy(), thisPtrPtr);
509
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 1879 llvm::Value *fieldAddress = insertStructGEP(structType, thisPtr, fieldIdx);
510
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 1879 generateCtorOrDtorCall(fieldAddress, ctorFunction, {});
511 }
512 3411 continue;
513 3411 }
514
515 // Store default field values
516
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 10458 if (fieldNode->defaultValue != nullptr || cliOptions.buildMode != BuildMode::RELEASE) {
517 // Retrieve field address
518
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 10458 if (!thisPtr)
519
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 3237 thisPtr = insertLoad(builder.getPtrTy(), thisPtrPtr);
520
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 10458 llvm::Value *fieldAddress = insertStructGEP(structType, thisPtr, fieldIdx);
521 // Retrieve default value
522 llvm::Value *value;
523
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 10458 if (fieldNode->defaultValue != nullptr) {
524 // To resolve the default value, we need to temporarily change to the manifestation of the current struct instantiation
525 5909 const size_t oldManIdx = manIdx; // Save manifestation index
526 5909 manIdx = spiceStruct->manifestationIndex;
527
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 5909 value = resolveValue(fieldNode->defaultValue);
528 5909 manIdx = oldManIdx; // Restore manifestation index
529 } else {
530
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 4549 assert(cliOptions.buildMode == BuildMode::DEBUG || cliOptions.buildMode == BuildMode::TEST);
531
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 4549 value = getDefaultValueForSymbolType(fieldType);
532 }
533 // Store default value
534
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 10458 insertStore(value, fieldAddress);
535 }
536 }
537 6200 }
538
539 146 void IRGenerator::generateDefaultCtor(const Function *ctorFunction) {
540
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 146 assert(ctorFunction->implicitDefault && ctorFunction->name == CTOR_FUNCTION_NAME);
541 258 const std::function<void()> generateBody = [&] { generateCtorBodyPreamble(ctorFunction->bodyScope); };
542
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 146 generateImplicitProcedure(generateBody, ctorFunction);
543 146 }
544
545 236 void IRGenerator::generateCopyCtorBodyPreamble(const Function *copyCtorFunction) {
546 // Retrieve struct scope
547 236 Scope *structScope = copyCtorFunction->bodyScope->parent;
548
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 236 assert(structScope != nullptr);
549
550 // Get struct address
551
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 708 const SymbolTableEntry *thisEntry = copyCtorFunction->bodyScope->lookupStrict(THIS_VARIABLE_NAME);
552
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 236 assert(thisEntry != nullptr);
553 236 llvm::Value *thisPtrPtr = getAddress(thisEntry);
554
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 236 assert(thisPtrPtr != nullptr);
555 236 llvm::Value *thisPtr = nullptr;
556
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 236 llvm::Type *structType = thisEntry->getQualType().getBase().toLLVMType(sourceFile);
557
558 // Retrieve the value of the original struct, which is the only function parameter
559 236 llvm::Value *originalThisPtr = builder.GetInsertBlock()->getParent()->getArg(1);
560
561 236 const size_t fieldCount = structScope->getFieldCount();
562
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 914 for (size_t fieldIdx = 0; fieldIdx < fieldCount; fieldIdx++) {
563
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 678 const SymbolTableEntry *fieldSymbol = structScope->lookupField(fieldIdx);
564
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 678 assert(fieldSymbol != nullptr && fieldSymbol->isField());
565
566 // Retrieve the address of the original field (copy source)
567
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 678 llvm::Value *originalFieldAddress = insertStructGEP(structType, originalThisPtr, fieldIdx);
568
569 678 const QualType &fieldType = fieldSymbol->getQualType();
570
571 // Call copy ctor for struct fields
572
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 678 if (fieldType.is(TY_STRUCT) && !fieldType.isTriviallyCopyable(nullptr)) {
573 // Lookup copy ctor function and call if available
574
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 392 Scope *matchScope = fieldType.getBodyScope();
575
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 1176 const ArgList args = {{fieldType.toConstRef(nullptr), false /* we have the field as storage */}};
576
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 392 const Function *copyCtor = FunctionManager::lookup(matchScope, CTOR_FUNCTION_NAME, fieldType, args, false);
577
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 392 assert(copyCtor != nullptr);
578
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 784 generateCtorOrDtorCall(fieldSymbol, copyCtor, {originalFieldAddress});
579 392 continue;
580 392 }
581
582 // Retrieve the address of the new field (copy dest)
583
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 286 if (!thisPtr)
584
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 145 thisPtr = insertLoad(builder.getPtrTy(), thisPtrPtr);
585
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 286 llvm::Value *fieldAddress = insertStructGEP(structType, thisPtr, fieldIdx);
586
587 // For owning heap fields, copy the underlying heap storage
588
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 286 if (fieldType.isHeap()) {
589
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 3 assert(fieldType.isPtr());
590
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 3 llvm::Type *pointeeType = fieldType.getContained().toLLVMType(sourceFile);
591
592 // Retrieve original heap address
593
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 3 llvm::Value *originalHeapAddress = insertLoad(builder.getPtrTy(), originalFieldAddress);
594
595 // Insert check for nullptr
596
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 6 llvm::BasicBlock *bThen = createBlock("nullptrcheck.then");
597
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 3 llvm::BasicBlock *bExit = createBlock("nullptrcheck.exit");
598
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 3 llvm::Value *condValue = builder.CreateICmpNE(originalHeapAddress, llvm::Constant::getNullValue(builder.getPtrTy()));
599 3 insertCondJump(condValue, bThen, bExit);
600
601 // Fill then block
602 3 switchToBlock(bThen);
603
604 // Allocate new space on the heap
605 3 llvm::Function *unsafeAllocFct = stdFunctionManager.getAllocUnsafeLongFct();
606
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 3 const size_t typeSizeInBytes = module->getDataLayout().getTypeSizeInBits(pointeeType) / 8;
607 3 llvm::ConstantInt *typeSize = builder.getInt64(typeSizeInBytes);
608
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 3 llvm::Value *newHeapAddress = builder.CreateCall(unsafeAllocFct, {typeSize});
609 3 insertStore(newHeapAddress, fieldAddress);
610
611 // Copy data from the old heap storage to the new one
612 3 generateShallowCopy(originalHeapAddress, pointeeType, newHeapAddress, false);
613 3 insertJump(bExit);
614
615 // Switch to exit block
616 3 switchToBlock(bExit);
617
618 3 continue;
619 3 }
620
621 // Shallow copy
622 283 llvm::Type *type = fieldType.toLLVMType(sourceFile);
623 283 generateShallowCopy(originalFieldAddress, type, fieldAddress, false);
624 }
625 236 }
626
627 1858 void IRGenerator::generateDefaultCopyCtor(const Function *copyCtorFunction) {
628
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 1858 assert(copyCtorFunction->implicitDefault && copyCtorFunction->name == CTOR_FUNCTION_NAME);
629 2094 const std::function<void()> generateBody = [&] { generateCopyCtorBodyPreamble(copyCtorFunction); };
630
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 1858 generateImplicitProcedure(generateBody, copyCtorFunction);
631 1858 }
632
633 5 void IRGenerator::generateMoveCtorBodyPreamble(const Function *moveCtorFunction) {
634 // Retrieve struct scope
635 5 Scope *structScope = moveCtorFunction->bodyScope->parent;
636
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 5 assert(structScope != nullptr);
637
638 // Get struct address
639
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 15 const SymbolTableEntry *thisEntry = moveCtorFunction->bodyScope->lookupStrict(THIS_VARIABLE_NAME);
640
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 5 assert(thisEntry != nullptr);
641 5 llvm::Value *thisPtrPtr = getAddress(thisEntry);
642
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 5 assert(thisPtrPtr != nullptr);
643 5 llvm::Value *thisPtr = nullptr;
644
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 5 llvm::Type *structType = thisEntry->getQualType().getBase().toLLVMType(sourceFile);
645
646 // Retrieve the value of the original (source) struct, which is the only function parameter
647 5 llvm::Value *originalThisPtr = builder.GetInsertBlock()->getParent()->getArg(1);
648
649 5 const size_t fieldCount = structScope->getFieldCount();
650
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 12 for (size_t fieldIdx = 0; fieldIdx < fieldCount; fieldIdx++) {
651
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 7 const SymbolTableEntry *fieldSymbol = structScope->lookupField(fieldIdx);
652
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 7 assert(fieldSymbol != nullptr && fieldSymbol->isField());
653
654 // Retrieve the address of the original field (move source)
655
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 7 llvm::Value *originalFieldAddress = insertStructGEP(structType, originalThisPtr, fieldIdx);
656
657 7 const QualType &fieldType = fieldSymbol->getQualType();
658
659 // Call move ctor for struct fields if available, otherwise fall back to copy or shallow copy
660
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 7 if (fieldType.is(TY_STRUCT)) {
661 2 Scope *matchScope = fieldType.getBodyScope();
662 // First try to find a move ctor (non-const ref param). We scan the manifestations directly via
663 // findMoveCtor rather than FunctionManager::lookup with a non-const ref arg, because lookup permits
664 // const-param-to-non-const-arg "constify" matching and may return the copy ctor as a false positive.
665
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 2 if (const Function *moveCtor = FunctionManager::findMoveCtor(matchScope)) {
666
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 4 generateCtorOrDtorCall(fieldSymbol, moveCtor, {originalFieldAddress});
667 2 continue;
668 }
669 // No move ctor: fall back to copy ctor for non-trivially copyable types
670 ✗ if (!fieldType.isTriviallyCopyable(nullptr)) {
671 ✗ const ArgList copyArgs = {{fieldType.toConstRef(nullptr), false}};
672 ✗ const Function *copyCtor = FunctionManager::lookup(matchScope, CTOR_FUNCTION_NAME, fieldType, copyArgs, false);
673 ✗ assert(copyCtor != nullptr);
674 ✗ generateCtorOrDtorCall(fieldSymbol, copyCtor, {originalFieldAddress});
675 ✗ continue;
676 ✗ }
677 }
678
679 // Retrieve the address of the new field (move dest)
680
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 5 if (!thisPtr)
681
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 4 thisPtr = insertLoad(builder.getPtrTy(), thisPtrPtr);
682
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 5 llvm::Value *fieldAddress = insertStructGEP(structType, thisPtr, fieldIdx);
683
684 // For owning heap fields, transfer ownership: copy the pointer to the destination, and null out the source
685
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 5 if (fieldType.isHeap()) {
686
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 3 assert(fieldType.isPtr());
687
688 // Load original heap address
689
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 3 llvm::Value *originalHeapAddress = insertLoad(builder.getPtrTy(), originalFieldAddress);
690 // Store it in the destination field
691 3 insertStore(originalHeapAddress, fieldAddress);
692 // Null out the source field so its dtor does not free the storage
693 3 insertStore(llvm::Constant::getNullValue(builder.getPtrTy()), originalFieldAddress);
694
695 3 continue;
696 3 }
697
698 // Shallow copy non-heap, non-struct (or trivially copyable struct) fields
699 2 llvm::Type *type = fieldType.toLLVMType(sourceFile);
700 2 generateShallowCopy(originalFieldAddress, type, fieldAddress, false);
701 }
702 5 }
703
704 10 void IRGenerator::generateDefaultMoveCtor(const Function *moveCtorFunction) {
705
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 10 assert(moveCtorFunction->implicitDefault && moveCtorFunction->name == CTOR_FUNCTION_NAME);
706 15 const std::function<void()> generateBody = [&] { generateMoveCtorBodyPreamble(moveCtorFunction); };
707
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 10 generateImplicitProcedure(generateBody, moveCtorFunction);
708 10 }
709
710 546 void IRGenerator::generateDtorBodyPreamble(const Function *dtorFunction) {
711 // Retrieve struct scope
712 546 Scope *structScope = dtorFunction->bodyScope->parent;
713
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 546 assert(structScope != nullptr);
714
715 // Get struct address
716
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 1638 const SymbolTableEntry *thisEntry = dtorFunction->bodyScope->lookupStrict(THIS_VARIABLE_NAME);
717
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 546 assert(thisEntry != nullptr);
718 546 llvm::Value *thisPtrPtr = getAddress(thisEntry);
719
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 546 assert(thisPtrPtr != nullptr);
720 546 llvm::Value *thisPtr = nullptr;
721
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 546 llvm::Type *structType = thisEntry->getQualType().getBase().toLLVMType(sourceFile);
722
723 546 const size_t fieldCount = structScope->getFieldCount();
724
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 2027 for (size_t i = 0; i < fieldCount; i++) {
725 1481 const size_t fieldIdx = fieldCount - 1 - i; // Destruct fields in reverse order
726
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 1481 const SymbolTableEntry *fieldSymbol = structScope->lookupField(fieldIdx);
727
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 1481 assert(fieldSymbol != nullptr && fieldSymbol->isField());
728
729 // Call dtor for struct fields
730 1481 const QualType &fieldType = fieldSymbol->getQualType();
731
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 1481 if (fieldType.is(TY_STRUCT)) {
732 // Lookup dtor function and generate call if found
733
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 2406 if (const Function *dtorFct = FunctionManager::lookup(fieldType.getBodyScope(), DTOR_FUNCTION_NAME, fieldType, {}, false))
734
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 648 generateCtorOrDtorCall(fieldSymbol, dtorFct, {});
735 802 continue;
736 802 }
737
738 // Deallocate fields, that are stored on the heap
739
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 679 if (fieldType.isHeap()) {
740 // Retrieve field address
741
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 159 if (!thisPtr)
742
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 144 thisPtr = insertLoad(builder.getPtrTy(), thisPtrPtr);
743
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 159 llvm::Value *fieldAddress = insertStructGEP(structType, thisPtr, fieldIdx);
744 // Call dealloc function
745 159 generateDeallocCall(fieldAddress);
746 }
747 }
748 546 }
749
750 1753 void IRGenerator::generateDefaultDtor(const Function *dtorFunction) {
751
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 1753 assert(dtorFunction->implicitDefault && dtorFunction->name == DTOR_FUNCTION_NAME);
752 2299 const std::function<void()> generateBody = [&] { generateDtorBodyPreamble(dtorFunction); };
753
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 1753 generateImplicitProcedure(generateBody, dtorFunction);
754 1753 }
755
756 4 void IRGenerator::generateTestMain() {
757 // Collect all test functions
758 4 std::vector<const std::vector<const Function *> *> tests;
759
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 9 for (const auto &sourceFile : resourceManager.sourceFiles | std::views::values)
760
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 5 if (!sourceFile->testFunctions.empty())
761
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 5 tests.push_back(&sourceFile->testFunctions);
762
763 // Prepare printf function
764
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 4 llvm::Function *printfFct = stdFunctionManager.getPrintfFct();
765
766 // Prepare success and error messages
767
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 16 llvm::Constant *allStartMsg = createGlobalStringConst("allStartMsg", TEST_ALL_START_MSG, *rootScope->codeLoc);
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 16 llvm::Constant *allEndMsg = createGlobalStringConst("allEndMsg", TEST_ALL_END_MSG, *rootScope->codeLoc);
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 16 llvm::Constant *fileStartMsg = createGlobalStringConst("fileStartMsg", TEST_FILE_START_MSG, *rootScope->codeLoc);
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 16 llvm::Constant *fileEndMsg = createGlobalStringConst("fileEndMsg", TEST_FILE_END_MSG, *rootScope->codeLoc);
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 16 llvm::Constant *runMsg = createGlobalStringConst("runMsg", TEST_CASE_RUN_MSG, *rootScope->codeLoc);
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 16 llvm::Constant *successMsg = createGlobalStringConst("successMsg", TEST_CASE_SUCCESS_MSG, *rootScope->codeLoc);
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 16 llvm::Constant *errorMsg = createGlobalStringConst("errorMsg", TEST_CASE_FAILED_MSG, *rootScope->codeLoc);
774
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 16 llvm::Constant *skippedMsg = createGlobalStringConst("skippedMsg", TEST_CASE_SKIPPED_MSG, *rootScope->codeLoc);
775
776 // Prepare entry for test main
777
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 4 QualType functionType(TY_FUNCTION);
778
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 4 functionType.setQualifiers(TypeQualifiers::of(TY_FUNCTION));
779
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 4 functionType.makePublic();
780
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 8 SymbolTableEntry entry(MAIN_FUNCTION_NAME, functionType, rootScope, nullptr, 0, false);
781
782 // Prepare test main function
783
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 12 Function testMain(MAIN_FUNCTION_NAME, &entry, QualType(TY_DYN), QualType(TY_INT), {}, {}, nullptr);
784 4 testMain.used = true; // Mark as used to prevent removal
785 4 testMain.implicitDefault = true;
786 4 testMain.mangleFunctionName = false;
787
788 // Prepare scope
789
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 4 rootScope->createChildScope(testMain.getScopeName(), ScopeType::FUNC_PROC_BODY, nullptr);
790
791 // Generate
792 ✗ const std::function<void()> generateBody = [&] {
793 // Prepare result variable
794 4 std::vector<llvm::Value *> testCaseResults;
795
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 4 testCaseResults.reserve(tests.size());
796
797 // Print start message
798 5 const auto accFct = [&](size_t sum, const std::vector<const Function *> *innerVector) { return sum + innerVector->size(); };
799 4 const size_t totalTestCount = std::accumulate(tests.begin(), tests.end(), 0, accFct);
800
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 4 builder.CreateCall(printfFct, {allStartMsg, builder.getInt32(totalTestCount), builder.getInt32(tests.size())});
801
802 // Generate a call to each test function
803
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 13 for (const std::vector<const Function *> *testSuite : tests) {
804 // Print test suite prologue
805
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 5 const std::string fileName = testSuite->front()->bodyScope->sourceFile->fileName;
806
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 10 llvm::Constant *fileNameValue = createGlobalStringConst("fileName", fileName, testSuite->front()->getDeclCodeLoc());
807
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 5 builder.CreateCall(printfFct, {fileStartMsg, builder.getInt32(testSuite->size()), fileNameValue});
808
809
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 30 for (const Function *testFunction : *testSuite) {
810
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 10 assert(testFunction->isNormalFunction());
811
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 10 assert(testFunction->paramList.empty());
812
813 // Retrieve attribute list for the test function
814
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 10 assert(testFunction->declNode->isFctOrProcDef());
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 10 const auto fctDefNode = spice_pointer_cast<FctDefBaseNode *>(testFunction->declNode);
816
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 10 assert(fctDefNode->attrs != nullptr);
817 10 const AttrLstNode *attrs = fctDefNode->attrs->attrLst;
818
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 20 assert(attrs->getAttrValueByName(ATTR_TEST)->boolValue); // The test attribute must be present
819
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 20 const CompileTimeValue *testSkipAttr = attrs->getAttrValueByName(ATTR_TEST_SKIP);
820
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 10 const bool skipTest = testSkipAttr && testSkipAttr->boolValue;
821
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 20 const CompileTimeValue *testNameAttr = attrs->getAttrValueByName(ATTR_TEST_NAME);
822
823 // Prepare test name
824
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 10 std::stringstream testName;
825
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 10 testName << testFunction->name;
826
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 10 if (testNameAttr)
827
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 1 testName << " (" << resourceManager.compileTimeStringValues.at(testNameAttr->stringValueOffset) << ")";
828
829 // Print test case run message
830
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 30 llvm::Constant *testNameValue = createGlobalStringConst("testName", testName.str(), testFunction->getDeclCodeLoc());
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 10 builder.CreateCall(printfFct, {runMsg, testNameValue});
832
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 10 if (skipTest) {
834 // Print test case skip message
835
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 1 builder.CreateCall(printfFct, {skippedMsg, testNameValue});
836 1 continue;
837 }
838
839 // Test function is not defined in the current module -> declare it
840
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 9 const std::string mangledName = testFunction->getMangledName();
841
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 9 if (!module->getFunction(mangledName)) {
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 2 assert(testFunction->returnType.is(TY_BOOL));
843
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 2 assert(testFunction->paramList.empty());
844
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 2 llvm::FunctionType *fctType = llvm::FunctionType::get(builder.getInt1Ty(), {}, false);
845
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 2 module->getOrInsertFunction(mangledName, fctType);
846 }
847
848 // Call test function
849
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 9 llvm::Function *callee = module->getFunction(mangledName);
850
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 9 assert(callee != nullptr);
851
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 9 llvm::Value *testCaseResult = builder.CreateCall(callee);
852
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 9 testCaseResults.push_back(testCaseResult);
853
854 // Print test case result message
855
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 9 llvm::Value *message = builder.CreateSelect(testCaseResult, successMsg, errorMsg);
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 9 builder.CreateCall(printfFct, {message, testNameValue});
857
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 10 }
858
859 // Print test suite epilogue
860
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 5 builder.CreateCall(printfFct, {fileEndMsg, builder.getInt32(testSuite->size()), fileNameValue});
861 5 }
862
863 // Print end message
864
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 4 builder.CreateCall(printfFct, {allEndMsg, builder.getInt32(totalTestCount), builder.getInt32(tests.size())});
865
866 // Compute overall result
867
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 4 llvm::Value *overallResult = builder.getTrue();
868
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 17 for (llvm::Value *testCaseResult : testCaseResults)
869
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 9 overallResult = builder.CreateAnd(overallResult, testCaseResult);
870
871 // Return code must be 0 for success and 1 for failure, so we need to invert the result and zero extend to 32 bit
872
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 4 llvm::Value *overallResultNegated = builder.CreateNot(overallResult);
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 4 llvm::Value *exitCode = builder.CreateZExt(overallResultNegated, builder.getInt32Ty());
874
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 4 builder.CreateRet(exitCode);
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 8 };
876
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 4 generateImplicitFunction(generateBody, &testMain);
877 4 }
878
879 } // namespace spice::compiler
880