GCC Code Coverage Report

Directory:	../
File:	src/irgenerator/GenVTable.cpp
Date:	2024-11-22 23:10:59

	Exec	Total	Coverage
Lines:	92	92	100.0%
Functions:	4	4	100.0%
Branches:	90	166	54.2%

  
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      // Copyright (c) 2021-2024 ChilliBits. All rights reserved.
    
      #include "IRGenerator.h"
    
      #include <llvm/IR/Module.h>
    
      #include <SourceFile.h>
    
      #include <irgenerator/NameMangling.h>
    
      namespace spice::compiler {
    
      249
      llvm::Constant *IRGenerator::generateTypeInfoName(StructBase *spiceStruct) const {
    
        // Resolve mangled type info name and mangled global name
    
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      249
        const std::string globalName = NameMangling::mangleTypeInfoName(spiceStruct);
    
        // Generate global string constant
    
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      249
        builder.CreateGlobalStringPtr(NameMangling::mangleTypeInfoValue(spiceStruct->name), globalName, 0, module);
    
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      249
        llvm::GlobalVariable *global = module->getNamedGlobal(globalName);
    
        // Set global attributes
    
      249
        global->setConstant(true);
    
      249
        global->setDSOLocal(true);
    
      249
        global->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::None);
    
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      249
        global->setLinkage(llvm::GlobalValue::ExternalLinkage);
    
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      249
        global->setComdat(module->getOrInsertComdat(globalName));
    
      249
        return spiceStruct->vTableData.typeInfoName = global;
    
      249
      }
    
      249
      llvm::Constant *IRGenerator::generateTypeInfo(StructBase *spiceStruct) const {
    
        // Generate type info name
    
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      249
        llvm::Constant *typeInfoName = generateTypeInfoName(spiceStruct);
    
        // Generate LLVM type for type info
    
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      249
        const std::string mangledName = NameMangling::mangleTypeInfo(spiceStruct);
    
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      249
        llvm::PointerType *ptrTy = builder.getPtrTy();
    
      249
        QualTypeList interfaceTypes;
    
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      249
        if (spiceStruct->entry->getQualType().is(TY_STRUCT)) {
    
      141
          const auto spiceStructEnsured = reinterpret_cast<Struct *>(spiceStruct);
    
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      141
          interfaceTypes = spiceStructEnsured->interfaceTypes;
    
        }
    
        // Build type info LLVM type
    
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      498
        std::vector<llvm::Type *> typeInfoFieldTypes = {ptrTy, ptrTy};
    
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      354
        for (size_t i = 0; i < interfaceTypes.size(); i++)
    
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      105
          typeInfoFieldTypes.push_back(ptrTy);
    
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      249
        spiceStruct->vTableData.typeInfoType = llvm::StructType::get(context, typeInfoFieldTypes);
    
        // Generate type info values
    
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      249
        llvm::Constant *typeInfoVTable = llvm::Constant::getNullValue(ptrTy);
    
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      498
        if (!sourceFile->isRttiRT()) {
    
          // Add external global pointer for TypeInfo vtable
    
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      213
          assert(sourceFile->isRuntimeModuleAvailable(RuntimeModule::RTTI_RT));
    
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      213
          const std::string typeInfoMangledName = NameMangling::mangleVTable("TypeInfo");
    
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      213
          llvm::Constant *typeInfoExtPtr = module->getOrInsertGlobal(typeInfoMangledName, builder.getPtrTy());
    
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      213
          typeInfoVTable = llvm::ConstantExpr::getInBoundsGetElementPtr(ptrTy, typeInfoExtPtr, builder.getInt64(2));
    
      213
        }
    
      249
        std::vector<llvm::Constant *> fieldValues;
    
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      249
        fieldValues.push_back(typeInfoVTable);
    
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      249
        fieldValues.push_back(typeInfoName);
    
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      354
        for (const QualType &interfaceType : interfaceTypes) {
    
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      105
          const Interface *interface = interfaceType.getInterface(nullptr);
    
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      105
          assert(interface != nullptr && interface->vTableData.typeInfo != nullptr);
    
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      105
          const std::string interfaceMangledName = NameMangling::mangleTypeInfo(interface);
    
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      105
          llvm::Constant *global = module->getOrInsertGlobal(interfaceMangledName, builder.getPtrTy());
    
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      105
          fieldValues.push_back(global);
    
      105
        }
    
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      249
        llvm::Constant *typeInfo = llvm::ConstantStruct::get(spiceStruct->vTableData.typeInfoType, fieldValues);
    
        // Generate global variable
    
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      249
        module->getOrInsertGlobal(mangledName, spiceStruct->vTableData.typeInfoType);
    
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      249
        llvm::GlobalVariable *global = module->getNamedGlobal(mangledName);
    
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      249
        global->setInitializer(typeInfo);
    
        // Set global attributes
    
      249
        global->setConstant(true);
    
      249
        global->setDSOLocal(true);
    
      249
        global->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::None);
    
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      249
        global->setLinkage(llvm::GlobalValue::ExternalLinkage);
    
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      249
        global->setComdat(module->getOrInsertComdat(mangledName));
    
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      249
        global->setAlignment(llvm::MaybeAlign(8));
    
      249
        return spiceStruct->vTableData.typeInfo = global;
    
      249
      }
    
      249
      llvm::Constant *IRGenerator::generateVTable(StructBase *spiceStruct) const {
    
        // Retrieve virtual method count
    
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      249
        const std::vector<Function *> virtualMethods = spiceStruct->scope->getVirtualMethods();
    
      249
        const size_t virtualMethodCount = virtualMethods.size();
    
      249
        const size_t arrayElementCount = virtualMethodCount + 2; // +2 for nullptr and TypeInfo
    
        // Generate type info data structures
    
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      249
        generateTypeInfo(spiceStruct);
    
        // Generate VTable type
    
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      249
        llvm::ArrayType *vtableArrayTy = llvm::ArrayType::get(builder.getPtrTy(), arrayElementCount);
    
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      249
        spiceStruct->vTableData.vtableType = llvm::StructType::get(context, vtableArrayTy, false);
    
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      249
        const std::string mangledName = NameMangling::mangleVTable(spiceStruct);
    
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      249
        module->getOrInsertGlobal(mangledName, spiceStruct->vTableData.vtableType);
    
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      249
        llvm::GlobalVariable *global = module->getNamedGlobal(mangledName);
    
        // Set global attributes
    
      249
        global->setConstant(true);
    
      249
        global->setDSOLocal(true);
    
      249
        global->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global);
    
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      249
        global->setLinkage(llvm::GlobalValue::ExternalLinkage);
    
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      249
        global->setComdat(module->getOrInsertComdat(mangledName));
    
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      249
        global->setAlignment(llvm::MaybeAlign(8));
    
      249
        return spiceStruct->vTableData.vtable = global;
    
      249
      }
    
      249
      void IRGenerator::generateVTableInitializer(const StructBase *spiceStruct) const {
    
        // Retrieve virtual method count
    
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      249
        assert(spiceStruct->scope);
    
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      249
        const std::vector<Function *> virtualMethods = spiceStruct->scope->getVirtualMethods();
    
      249
        const size_t virtualMethodCount = virtualMethods.size();
    
      249
        const size_t arrayElementCount = virtualMethodCount + 2; // +2 for nullptr and TypeInfo
    
        // Generate VTable type
    
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      249
        llvm::PointerType *ptrTy = builder.getPtrTy();
    
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      249
        llvm::ArrayType *vtableArrayTy = llvm::ArrayType::get(ptrTy, arrayElementCount);
    
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      249
        assert(spiceStruct->vTableData.vtableType);
    
        // Generate VTable values
    
      249
        std::vector<llvm::Constant *> arrayValues;
    
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      249
        arrayValues.push_back(llvm::Constant::getNullValue(ptrTy)); // nullptr as safety guard
    
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      249
        arrayValues.push_back(spiceStruct->vTableData.typeInfo);    // TypeInfo to identify the type for the VTable
    
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      801
        for (Function *virtualMethod : virtualMethods) {
    
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      552
          assert(spiceStruct->scope->type == ScopeType::INTERFACE || virtualMethod->llvmFunction != nullptr);
    
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      552
          arrayValues.push_back(virtualMethod->llvmFunction ? virtualMethod->llvmFunction : llvm::Constant::getNullValue(ptrTy));
    
        }
    
        // Generate VTable struct
    
      249
        std::vector<llvm::Constant *> fieldValues;
    
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      249
        fieldValues.push_back(llvm::ConstantArray::get(vtableArrayTy, arrayValues));
    
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      249
        llvm::Constant *initializer = llvm::ConstantStruct::get(spiceStruct->vTableData.vtableType, fieldValues);
    
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      249
        const std::string mangledName = NameMangling::mangleVTable(spiceStruct);
    
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      249
        llvm::GlobalVariable *global = module->getNamedGlobal(mangledName);
    
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      249
        assert(global != nullptr);
    
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      249
        global->setInitializer(initializer);
    
      249
      }
    
      } // namespace spice::compiler

Line	Branch	Exec	Source
1			// Copyright (c) 2021-2024 ChilliBits. All rights reserved.
2
3			#include "IRGenerator.h"
4
5			#include <llvm/IR/Module.h>
6
7			#include <SourceFile.h>
8			#include <irgenerator/NameMangling.h>
9
10			namespace spice::compiler {
11
12		249	llvm::Constant IRGenerator::generateTypeInfoName(StructBase spiceStruct) const {
13			// Resolve mangled type info name and mangled global name
14	1/2 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken.	249	const std::string globalName = NameMangling::mangleTypeInfoName(spiceStruct);
15
16			// Generate global string constant
17	3/6 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken. ✓ Branch 4 taken 249 times. ✗ Branch 5 not taken. ✓ Branch 8 taken 249 times. ✗ Branch 9 not taken.	249	builder.CreateGlobalStringPtr(NameMangling::mangleTypeInfoValue(spiceStruct->name), globalName, 0, module);
18	1/2 ✓ Branch 2 taken 249 times. ✗ Branch 3 not taken.	249	llvm::GlobalVariable *global = module->getNamedGlobal(globalName);
19
20			// Set global attributes
21		249	global->setConstant(true);
22		249	global->setDSOLocal(true);
23		249	global->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::None);
24	1/2 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken.	249	global->setLinkage(llvm::GlobalValue::ExternalLinkage);
25	2/4 ✓ Branch 2 taken 249 times. ✗ Branch 3 not taken. ✓ Branch 5 taken 249 times. ✗ Branch 6 not taken.	249	global->setComdat(module->getOrInsertComdat(globalName));
26
27		249	return spiceStruct->vTableData.typeInfoName = global;
28		249	}
29
30		249	llvm::Constant IRGenerator::generateTypeInfo(StructBase spiceStruct) const {
31			// Generate type info name
32	1/2 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken.	249	llvm::Constant *typeInfoName = generateTypeInfoName(spiceStruct);
33
34			// Generate LLVM type for type info
35	1/2 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken.	249	const std::string mangledName = NameMangling::mangleTypeInfo(spiceStruct);
36	1/2 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken.	249	llvm::PointerType *ptrTy = builder.getPtrTy();
37
38		249	QualTypeList interfaceTypes;
39	4/6 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken. ✓ Branch 4 taken 249 times. ✗ Branch 5 not taken. ✓ Branch 6 taken 141 times. ✓ Branch 7 taken 108 times.	249	if (spiceStruct->entry->getQualType().is(TY_STRUCT)) {
40		141	const auto spiceStructEnsured = reinterpret_cast<Struct *>(spiceStruct);
41	1/2 ✓ Branch 1 taken 141 times. ✗ Branch 2 not taken.	141	interfaceTypes = spiceStructEnsured->interfaceTypes;
42			}
43
44			// Build type info LLVM type
45	1/2 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken.	498	std::vector<llvm::Type *> typeInfoFieldTypes = {ptrTy, ptrTy};
46	2/2 ✓ Branch 1 taken 105 times. ✓ Branch 2 taken 249 times.	354	for (size_t i = 0; i < interfaceTypes.size(); i++)
47	1/2 ✓ Branch 1 taken 105 times. ✗ Branch 2 not taken.	105	typeInfoFieldTypes.push_back(ptrTy);
48	1/2 ✓ Branch 2 taken 249 times. ✗ Branch 3 not taken.	249	spiceStruct->vTableData.typeInfoType = llvm::StructType::get(context, typeInfoFieldTypes);
49
50			// Generate type info values
51	1/2 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken.	249	llvm::Constant *typeInfoVTable = llvm::Constant::getNullValue(ptrTy);
52	3/4 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken. ✓ Branch 3 taken 213 times. ✓ Branch 4 taken 36 times.	498	if (!sourceFile->isRttiRT()) {
53			// Add external global pointer for TypeInfo vtable
54	2/4 ✓ Branch 1 taken 213 times. ✗ Branch 2 not taken. ✗ Branch 3 not taken. ✓ Branch 4 taken 213 times.	213	assert(sourceFile->isRuntimeModuleAvailable(RuntimeModule::RTTI_RT));
55	2/4 ✓ Branch 1 taken 213 times. ✗ Branch 2 not taken. ✓ Branch 4 taken 213 times. ✗ Branch 5 not taken.	213	const std::string typeInfoMangledName = NameMangling::mangleVTable("TypeInfo");
56	2/4 ✓ Branch 1 taken 213 times. ✗ Branch 2 not taken. ✓ Branch 5 taken 213 times. ✗ Branch 6 not taken.	213	llvm::Constant *typeInfoExtPtr = module->getOrInsertGlobal(typeInfoMangledName, builder.getPtrTy());
57	2/4 ✓ Branch 1 taken 213 times. ✗ Branch 2 not taken. ✓ Branch 4 taken 213 times. ✗ Branch 5 not taken.	213	typeInfoVTable = llvm::ConstantExpr::getInBoundsGetElementPtr(ptrTy, typeInfoExtPtr, builder.getInt64(2));
58		213	}
59		249	std::vector<llvm::Constant *> fieldValues;
60	1/2 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken.	249	fieldValues.push_back(typeInfoVTable);
61	1/2 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken.	249	fieldValues.push_back(typeInfoName);
62	2/2 ✓ Branch 5 taken 105 times. ✓ Branch 6 taken 249 times.	354	for (const QualType &interfaceType : interfaceTypes) {
63	1/2 ✓ Branch 1 taken 105 times. ✗ Branch 2 not taken.	105	const Interface *interface = interfaceType.getInterface(nullptr);
64	2/4 ✓ Branch 0 taken 105 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 105 times. ✗ Branch 3 not taken.	105	assert(interface != nullptr && interface->vTableData.typeInfo != nullptr);
65	1/2 ✓ Branch 1 taken 105 times. ✗ Branch 2 not taken.	105	const std::string interfaceMangledName = NameMangling::mangleTypeInfo(interface);
66	2/4 ✓ Branch 1 taken 105 times. ✗ Branch 2 not taken. ✓ Branch 5 taken 105 times. ✗ Branch 6 not taken.	105	llvm::Constant *global = module->getOrInsertGlobal(interfaceMangledName, builder.getPtrTy());
67	1/2 ✓ Branch 1 taken 105 times. ✗ Branch 2 not taken.	105	fieldValues.push_back(global);
68		105	}
69	1/2 ✓ Branch 2 taken 249 times. ✗ Branch 3 not taken.	249	llvm::Constant *typeInfo = llvm::ConstantStruct::get(spiceStruct->vTableData.typeInfoType, fieldValues);
70
71			// Generate global variable
72	1/2 ✓ Branch 2 taken 249 times. ✗ Branch 3 not taken.	249	module->getOrInsertGlobal(mangledName, spiceStruct->vTableData.typeInfoType);
73	1/2 ✓ Branch 2 taken 249 times. ✗ Branch 3 not taken.	249	llvm::GlobalVariable *global = module->getNamedGlobal(mangledName);
74	1/2 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken.	249	global->setInitializer(typeInfo);
75
76			// Set global attributes
77		249	global->setConstant(true);
78		249	global->setDSOLocal(true);
79		249	global->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::None);
80	1/2 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken.	249	global->setLinkage(llvm::GlobalValue::ExternalLinkage);
81	2/4 ✓ Branch 2 taken 249 times. ✗ Branch 3 not taken. ✓ Branch 5 taken 249 times. ✗ Branch 6 not taken.	249	global->setComdat(module->getOrInsertComdat(mangledName));
82	2/4 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken. ✓ Branch 4 taken 249 times. ✗ Branch 5 not taken.	249	global->setAlignment(llvm::MaybeAlign(8));
83
84		249	return spiceStruct->vTableData.typeInfo = global;
85		249	}
86
87		249	llvm::Constant IRGenerator::generateVTable(StructBase spiceStruct) const {
88			// Retrieve virtual method count
89	1/2 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken.	249	const std::vector<Function *> virtualMethods = spiceStruct->scope->getVirtualMethods();
90		249	const size_t virtualMethodCount = virtualMethods.size();
91		249	const size_t arrayElementCount = virtualMethodCount + 2; // +2 for nullptr and TypeInfo
92
93			// Generate type info data structures
94	1/2 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken.	249	generateTypeInfo(spiceStruct);
95
96			// Generate VTable type
97	2/4 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken. ✓ Branch 4 taken 249 times. ✗ Branch 5 not taken.	249	llvm::ArrayType *vtableArrayTy = llvm::ArrayType::get(builder.getPtrTy(), arrayElementCount);
98	1/2 ✓ Branch 2 taken 249 times. ✗ Branch 3 not taken.	249	spiceStruct->vTableData.vtableType = llvm::StructType::get(context, vtableArrayTy, false);
99
100	1/2 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken.	249	const std::string mangledName = NameMangling::mangleVTable(spiceStruct);
101	1/2 ✓ Branch 2 taken 249 times. ✗ Branch 3 not taken.	249	module->getOrInsertGlobal(mangledName, spiceStruct->vTableData.vtableType);
102	1/2 ✓ Branch 2 taken 249 times. ✗ Branch 3 not taken.	249	llvm::GlobalVariable *global = module->getNamedGlobal(mangledName);
103
104			// Set global attributes
105		249	global->setConstant(true);
106		249	global->setDSOLocal(true);
107		249	global->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global);
108	1/2 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken.	249	global->setLinkage(llvm::GlobalValue::ExternalLinkage);
109	2/4 ✓ Branch 2 taken 249 times. ✗ Branch 3 not taken. ✓ Branch 5 taken 249 times. ✗ Branch 6 not taken.	249	global->setComdat(module->getOrInsertComdat(mangledName));
110	2/4 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken. ✓ Branch 4 taken 249 times. ✗ Branch 5 not taken.	249	global->setAlignment(llvm::MaybeAlign(8));
111
112		249	return spiceStruct->vTableData.vtable = global;
113		249	}
114
115		249	void IRGenerator::generateVTableInitializer(const StructBase *spiceStruct) const {
116			// Retrieve virtual method count
117	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 249 times.	249	assert(spiceStruct->scope);
118	1/2 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken.	249	const std::vector<Function *> virtualMethods = spiceStruct->scope->getVirtualMethods();
119		249	const size_t virtualMethodCount = virtualMethods.size();
120		249	const size_t arrayElementCount = virtualMethodCount + 2; // +2 for nullptr and TypeInfo
121
122			// Generate VTable type
123	1/2 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken.	249	llvm::PointerType *ptrTy = builder.getPtrTy();
124	1/2 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken.	249	llvm::ArrayType *vtableArrayTy = llvm::ArrayType::get(ptrTy, arrayElementCount);
125	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 249 times.	249	assert(spiceStruct->vTableData.vtableType);
126
127			// Generate VTable values
128		249	std::vector<llvm::Constant *> arrayValues;
129	2/4 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken. ✓ Branch 4 taken 249 times. ✗ Branch 5 not taken.	249	arrayValues.push_back(llvm::Constant::getNullValue(ptrTy)); // nullptr as safety guard
130	1/2 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken.	249	arrayValues.push_back(spiceStruct->vTableData.typeInfo); // TypeInfo to identify the type for the VTable
131	2/2 ✓ Branch 4 taken 552 times. ✓ Branch 5 taken 249 times.	801	for (Function *virtualMethod : virtualMethods) {
132	3/4 ✓ Branch 0 taken 272 times. ✓ Branch 1 taken 280 times. ✗ Branch 2 not taken. ✓ Branch 3 taken 272 times.	552	assert(spiceStruct->scope->type == ScopeType::INTERFACE \|\| virtualMethod->llvmFunction != nullptr);
133	4/6 ✓ Branch 0 taken 272 times. ✓ Branch 1 taken 280 times. ✓ Branch 3 taken 280 times. ✗ Branch 4 not taken. ✓ Branch 6 taken 552 times. ✗ Branch 7 not taken.	552	arrayValues.push_back(virtualMethod->llvmFunction ? virtualMethod->llvmFunction : llvm::Constant::getNullValue(ptrTy));
134			}
135
136			// Generate VTable struct
137		249	std::vector<llvm::Constant *> fieldValues;
138	2/4 ✓ Branch 2 taken 249 times. ✗ Branch 3 not taken. ✓ Branch 5 taken 249 times. ✗ Branch 6 not taken.	249	fieldValues.push_back(llvm::ConstantArray::get(vtableArrayTy, arrayValues));
139	1/2 ✓ Branch 2 taken 249 times. ✗ Branch 3 not taken.	249	llvm::Constant *initializer = llvm::ConstantStruct::get(spiceStruct->vTableData.vtableType, fieldValues);
140
141	1/2 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken.	249	const std::string mangledName = NameMangling::mangleVTable(spiceStruct);
142	1/2 ✓ Branch 2 taken 249 times. ✗ Branch 3 not taken.	249	llvm::GlobalVariable *global = module->getNamedGlobal(mangledName);
143	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 249 times.	249	assert(global != nullptr);
144	1/2 ✓ Branch 1 taken 249 times. ✗ Branch 2 not taken.	249	global->setInitializer(initializer);
145		249	}
146
147			} // namespace spice::compiler
148