Replacing all_registers Queries - Replacing all_registers Queries - 2026.1 English - UG903

The following are additional query recommendations:

• Avoid using all_registers whenever possible. This command often returns large collections of objects, which can impact performance. Replace it with get_cells or get_pins using specific name patterns to limit the scope of the query.
• Use clock objects instead of all_registers -clock when gathering all sequential elements in a clock domain. This provides equivalent coverage and is far more efficient. For example, use the first optimal command instead of the one that follows:

  set_multicycle_path –from [all_inputs] –to [get_clocks clk1]

  set_multicycle_path –from [all_inputs] –to [all_registers –clock clk1]

  Referencing a single clock object avoids listing potentially hundreds of thousands of sequential elements.