// 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)};
}