To vectorize to vec8/16 or vec4 (without vec3), we can't incrementally add
components to a load/store. This patch loops vectorization so that two new
vec2/4/8 operations can be combined into a larger operation.
fossil-db (GFX10.3):
Totals from 22 (0.02% of 139391) affected shaders:
SpillVGPRs: 1749 -> 1771 (+1.26%)
CodeSize: 901212 -> 892532 (-0.96%); split: -1.19%, +0.22%
Scratch: 178176 -> 184320 (+3.45%)
Instrs: 159358 -> 158027 (-0.84%); split: -0.99%, +0.16%
Cycles: 37046772 -> 36738544 (-0.83%); split: -1.00%, +0.17%
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10384>
Rhys Perry
89b759c4f9