Hi. According to Arm Mali GPU Datasheet 2020.pdf document there are several modes for maximum thread count, for Mali G76 it is 2 such modes, 768 threads for 0-32 work registers, and 384 for 33-64 work registers.
Is it possible that register spilling can happen if compiler decides that it is better to use only 0-32 work registers and double number of threads for higher performance? For example, kernel exceeded 0-32 range by only 1 additional register and this register can be spilled to global memory, but on the other hand we have double number of threads. If it is the case is there a way to control compiler not to use register spilling in such case, but use full 0-64 range of registers without spilling and only half of threads? Is cl_arm_thread_limit_hint extension can be used for it?
Not at this time, sorry.P