On 01/02/2022 11:15, Tvrtko Ursulin wrote:
From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Quicky and dirty hack based on some old ideas. Thought maybe the approach might
interest the Arm port guys. But with IS_GEN_RANGE removed easy gains are not so
big so meh.. Maybe some more easy wins with IS_DISPLAY_VER but I haven't looked
into that side.
3884664 449681 6720 4341065 423d49 i915.ko.tip
3599989 429034 6688 4035711 3d947f i915.ko.noigp
Note debug kconfig so everything is inflated. Whether or not the relative gain
would change with production kconfig I am not sure.
Non debug build for the record:
text data bss dec hex filename
2188446 20528 2944 2211918 21c04e i915.ko.tip
1926865 17776 2944 1947585 1db7c1 i915.ko.noigpu
So around ~12% of the driver eliminated as dead code with the easy and
incomplete approach. Not bad considering no clean split on Gen12, gen
based if-ladder are mostly untouched and no LTO.
Regards,
Tvrtko
