Exemplo n.º 1
0
//===----------------------------------------------------------------------===//
// Here, we discover the layout of every column that will be accessed. A
// column's layout includes three pieces of information:
//
// 1. The starting memory address (where the first value of the column is)
// 2. The stride length
// 3. Whether the column is in columnar layout
//===----------------------------------------------------------------------===//
std::vector<TileGroup::ColumnLayout> TileGroup::GetColumnLayouts(
    CodeGen &codegen, llvm::Value *tile_group_ptr,
    llvm::Value *column_layout_infos) const {
  // Call RuntimeFunctions::GetTileGroupLayout()
  uint32_t num_cols = schema_.GetColumnCount();
  codegen.Call(
      RuntimeFunctionsProxy::GetTileGroupLayout,
      {tile_group_ptr, column_layout_infos, codegen.Const32(num_cols)});

  // Collect <start, stride, is_columnar> triplets of all columns
  std::vector<TileGroup::ColumnLayout> layouts;
  auto *layout_type = ColumnLayoutInfoProxy::GetType(codegen);
  for (uint32_t col_id = 0; col_id < num_cols; col_id++) {
    auto *start = codegen->CreateLoad(codegen->CreateConstInBoundsGEP2_32(
        layout_type, column_layout_infos, col_id, 0));
    auto *stride = codegen->CreateLoad(codegen->CreateConstInBoundsGEP2_32(
        layout_type, column_layout_infos, col_id, 1));
    auto *columnar = codegen->CreateLoad(codegen->CreateConstInBoundsGEP2_32(
        layout_type, column_layout_infos, col_id, 2));
    layouts.push_back(ColumnLayout{col_id, start, stride, columnar});
  }
  return layouts;
}
Exemplo n.º 2
0
// Pull out the 'start_pos_' instance member from the provided Sorter instance
llvm::Value *Sorter::GetStartPosition(CodeGen &codegen,
                                      llvm::Value *sorter_ptr) const {
  auto *sorter_type = SorterProxy::GetType(codegen);
  return codegen->CreateLoad(
      codegen->CreateConstInBoundsGEP2_32(sorter_type, sorter_ptr, 0, 0));
}
Exemplo n.º 3
0
llvm::Value *Sorter::GetNumberOfStoredTuples(CodeGen &codegen,
                                             llvm::Value *sorter_ptr) const {
  auto *sorter_type = SorterProxy::GetType(codegen);
  return codegen->CreateLoad(
      codegen->CreateConstInBoundsGEP2_32(sorter_type, sorter_ptr, 0, 3));
}