[PATCH 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.