50de3f80a8
The following patches will add support for an additional optimisation so this function will no longer just optimise varying constants. Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de> Reviewed-by: Marek Olšák <marek.olsak@amd.com> Reviewed-by: Eric Anholt <eric@anholt.net>