[PATCH v2 0/6] MR773: Draft: vkd3d-shader/ir: Try harder to move `break's to the end of loops.

[Giovanni Mascellani (＠giomasce)]

This goes atop !764. The last three commits belong to this MR.

Since we want to get rid of loops and `break's as much as possible, we try to move `break's out of selection constructs as much as possible so it's easier to match them with loops. This MR introduces a few other tricks to help that.

--
  v2: vkd3d-shader/ir: Move breaks out of selections again after having optimized loops.
      vkd3d-shader/ir: Append code to the non-breaking branch if there is breaking one.
      vkd3d-shader/ir: Prepare for changing the destination list in vsir_cfg_optimize_recurse().
      vkd3d-shader/ir: Remove loops that terminate with a `break'.
      vkd3d-shader/ir: Count how many jumps target each loop.

https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/773