[wesnoth-commits] [wesnoth/wesnoth] 629df4: Slight optimisation of canvas::set_variables using...

[Steve Cotton]

  Branch: refs/heads/master
  Home:   https://github.com/wesnoth/wesnoth
  Commit: 629df4e76caa93617b924e432411a62e57ca64c4
      https://github.com/wesnoth/wesnoth/commit/629df4e76caa93617b924e432411a62e57ca64c4
  Author: Steve Cotton <steve at octalot.co.uk>
  Date:   2021-06-09 (Wed, 09 Jun 2021)

  Changed paths:
    M src/formula/callable.hpp
    M src/gui/core/canvas.cpp
    M src/gui/core/canvas.hpp

  Log Message:
  -----------
  Slight optimisation of canvas::set_variables using std::move

Doesn't make much difference for release builds built with GCC,
it takes between 1% and 7% off the cost of std::update_canvas().
Calculated using the time taken by gui2::widget::get_best_size()
as a reference.

It's a tiny improvement, but it's also a tiny change, and the
improvement is in the loop that's MP lobby's performance problem,
as described in issue #5578.