C++ StructType::setName方法代码示例

/// linkDefinedTypeBodies - Produce a body for an opaque type in the dest
/// module from a type definition in the source module.
void TypeMapTy::linkDefinedTypeBodies() {
  SmallVector<Type*, 16> Elements;
  SmallString<16> TmpName;
  
  // Note that processing entries in this loop (calling 'get') can add new
  // entries to the SrcDefinitionsToResolve vector.
  while (!SrcDefinitionsToResolve.empty()) {
    StructType *SrcSTy = SrcDefinitionsToResolve.pop_back_val();
    StructType *DstSTy = cast<StructType>(MappedTypes[SrcSTy]);
    
    // TypeMap is a many-to-one mapping, if there were multiple types that
    // provide a body for DstSTy then previous iterations of this loop may have
    // already handled it.  Just ignore this case.
    if (!DstSTy->isOpaque()) continue;
    assert(!SrcSTy->isOpaque() && "Not resolving a definition?");
    
    // Map the body of the source type over to a new body for the dest type.
    Elements.resize(SrcSTy->getNumElements());
    for (unsigned i = 0, e = Elements.size(); i != e; ++i)
      Elements[i] = getImpl(SrcSTy->getElementType(i));
    
    DstSTy->setBody(Elements, SrcSTy->isPacked());
    
    // If DstSTy has no name or has a longer name than STy, then viciously steal
    // STy's name.
    if (!SrcSTy->hasName()) continue;
    StringRef SrcName = SrcSTy->getName();
    
    if (!DstSTy->hasName() || DstSTy->getName().size() > SrcName.size()) {
      TmpName.insert(TmpName.end(), SrcName.begin(), SrcName.end());
      SrcSTy->setName("");
      DstSTy->setName(TmpName.str());
      TmpName.clear();
    }
  }
  
  DstResolvedOpaqueTypes.clear();
}

// Strip any named types of their names.
static void StripTypeNames(Module &M, bool PreserveDbgInfo) {
  TypeFinder StructTypes;
  StructTypes.run(M, false);

  for (unsigned i = 0, e = StructTypes.size(); i != e; ++i) {
    StructType *STy = StructTypes[i];
    if (STy->isLiteral() || STy->getName().empty()) continue;
    
    if (PreserveDbgInfo && STy->getName().startswith("llvm.dbg"))
      continue;

    STy->setName("");
  }
}

StructType *StructType::create(LLVMContext &Context, StringRef Name) {
  StructType *ST = new (Context.pImpl->TypeAllocator) StructType(Context);
  if (!Name.empty())
    ST->setName(Name);
  return ST;
}