aco: limit hard clauses to 63 instructions
See https://reviews.llvm.org/D127391
fossil-db (gfx1100):
Totals from 4 (0.00% of 161689) affected shaders:
Latency: 24545 -> 24539 (-0.02%)
InvThroughput: 102867 -> 102835 (-0.03%)
fossil-db (navi10):
Totals from 4 (0.00% of 161220) affected shaders:
Latency: 25969 -> 25959 (-0.04%)
InvThroughput: 112917 -> 112869 (-0.04%)
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17710>