本文整理汇总了C++中DICompositeType::isDerivedType方法的典型用法代码示例。如果您正苦于以下问题：C++ DICompositeType::isDerivedType方法的具体用法？C++ DICompositeType::isDerivedType怎么用？C++ DICompositeType::isDerivedType使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类DICompositeType的用法示例。
在下文中一共展示了DICompositeType::isDerivedType方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: diCu
std::unique_ptr<StructInfo> StructInfo::getFromGlobalPointer(Module *module, llvm::StringRef name)
{
GlobalVariable *var = module->getGlobalVariable(name, false);
if (!var || !var->getType() || !var->getType()->isPointerTy()) {
assert(false);
llvm::errs() << "StructInfo: Cannot get global variable " << name << ", or it is not a pointer." << '\n';
return nullptr;
}
PointerType *varDeref = dyn_cast<PointerType>(var->getType()->getElementType());
if (!varDeref || !varDeref->getElementType())
{
assert(false);
llvm::errs() << "StructInfo: Pointer not valid." << '\n';
return nullptr;
}
StructType *structType = dyn_cast<StructType>(varDeref->getElementType());
if (!structType) {
assert(false);
llvm::errs() << "StructInfo: Cannot get struct type." << '\n';
return nullptr;
}
NamedMDNode *mdCuNodes = module->getNamedMetadata("llvm.dbg.cu");
if (!mdCuNodes) {
assert(false);
llvm::errs() << "StructInfo: Cannot find metadata." << '\n';
return nullptr;
}
std::shared_ptr<DITypeIdentifierMap> typeIdentifierMap(new DITypeIdentifierMap(generateDITypeIdentifierMap(mdCuNodes)));
DICompositeType *diStructType = nullptr;
for ( unsigned i = 0; i < mdCuNodes->getNumOperands() && !diStructType; ++i )
{
DICompileUnit diCu(mdCuNodes->getOperand(i));
for ( unsigned j = 0; j < diCu.getGlobalVariables().getNumElements(); ++j )
{
DIGlobalVariable diGlobalVar(diCu.getGlobalVariables().getElement(j));
if (diGlobalVar.getName() != name) {
continue;
}
//Go through pointers until we reach a structure
DIType diStructType(diGlobalVar.getType());
while (diStructType.isDerivedType() && !diStructType.isCompositeType()) {
diStructType = std::unique_ptr<DIDerivedType>(new DIDerivedType(diStructType))->getTypeDerivedFrom().resolve(*typeIdentifierMap);
}
if (!diStructType.isCompositeType()) {
llvm::errs() << "StructInfo: Global variable " << name << " does not point to a composite type: " << diStructType.getName() << '\n';
assert(false);
return nullptr;
}
return std::unique_ptr<StructInfo>(new StructInfo(
module,
structType,
new DICompositeType(diStructType),
typeIdentifierMap));
}
}
assert(false);
llvm::errs() << "StructInfo: Did not find global variable " << name << " in debug information." << '\n';
return nullptr;
}