// Iterate over the tuples in the sorter in batches/vectors of the given size void Sorter::VectorizedIterate( CodeGen &codegen, llvm::Value *sorter_ptr, uint32_t vector_size, uint64_t offset, Sorter::VectorizedIterateCallback &callback) const { llvm::Value *start_pos = codegen.Load(SorterProxy::tuples_start, sorter_ptr); llvm::Value *num_tuples = NumTuples(codegen, sorter_ptr); num_tuples = codegen->CreateTrunc(num_tuples, codegen.Int32Type()); if (offset != 0) { start_pos = codegen->CreateConstInBoundsGEP1_32(codegen.CharPtrType(), start_pos, offset); num_tuples = codegen->CreateSub(num_tuples, codegen.Const32(offset)); } lang::VectorizedLoop loop(codegen, num_tuples, vector_size, {}); { // Current loop range auto curr_range = loop.GetCurrentRange(); // Provide an accessor into the sorted space SorterAccess sorter_access(*this, start_pos); // Issue the callback callback.ProcessEntries(codegen, curr_range.start, curr_range.end, sorter_access); // That's it loop.LoopEnd(codegen, {}); } }
codegen::Value Sorter::SorterAccess::LoadRowValue( CodeGen &codegen, Sorter::SorterAccess::Row &row, uint32_t column_index) const { if (row.row_pos_ == nullptr) { auto *addr = codegen->CreateInBoundsGEP(codegen.CharPtrType(), start_pos_, row.row_idx_); row.row_pos_ = codegen->CreateLoad(addr); } const auto &storage_format = sorter_.GetStorageFormat(); UpdateableStorage::NullBitmap null_bitmap(codegen, storage_format, row.row_pos_); return storage_format.GetValue(codegen, row.row_pos_, column_index, null_bitmap); }
void Varchar::GetTypeForMaterialization(CodeGen &codegen, llvm::Type *&val_type, llvm::Type *&len_type) const { val_type = codegen.CharPtrType(); len_type = codegen.Int32Type(); }
Value Varchar::GetNullValue(CodeGen &codegen) const { return Value{Type{TypeId(), true}, codegen.NullPtr(codegen.CharPtrType()), codegen.Const32(0), codegen.ConstBool(true)}; }