[Mesa-dev] [PATCH] i965: Fix move_interpolation_to_top() pass.

[Matt Turner]

On Tue, Jul 26, 2016 at 1:19 PM, Kenneth Graunke <kenneth at whitecape.org> wrote:
> The pass I introduced in commit a2dc11a7818c04d8dc0324e8fcba98d60bae
> was entirely broken.  A missing "break" made the load_interpolated_input
> case always fall through to "default" and hit a "continue", making it
> not actually move any load_interpolated_input intrinsics at all.

Let's make a rule that non-obvious fallthroughs *must* be marked with
a /* fallthrough */ comment. That would have lead reviewers to notice
that something was strange. Coverity also makes noise about this, and
that would be nice to avoid as well.