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ac/nir: remove sleeps from gfx12 streamout code

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This is faster.

Acked-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30063>
This commit is contained in:
Marek Olšák
2024-06-22 23:10:24 -04:00
committed by Marge Bot
parent 1b2cd628b8
commit 11272a8d82
1 changed files with 0 additions and 11 deletions
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11
src/amd/common/ac_nir_lower_ngg.c
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@@ -1945,14 +1945,6 @@ ngg_build_streamout_buffer_info(nir_builder *b,
} else {
/* The NIR version of the above using nir_atomic_op_ordered_add_gfx12_amd. */
enum { NUM_ATOMICS_IN_FLIGHT = 6 };
unsigned atomic_latency = 230; /* TODO: set the correct value depending on the chip */
/* Set the sleep time to latency/num_atomics minus some lost time estimate due to wave
* scheduling.
*/
unsigned sleep_time = MAX2(1, atomic_latency / NUM_ATOMICS_IN_FLIGHT);
if (sleep_time > 10)
sleep_time -= 10;
nir_variable *result_ring[NUM_ATOMICS_IN_FLIGHT] = {0};
for (unsigned i = 0; i < NUM_ATOMICS_IN_FLIGHT; i++)
@@ -2002,9 +1994,6 @@ ngg_build_streamout_buffer_info(nir_builder *b,
nir_jump(b, nir_jump_break);
}
nir_pop_if(b, if_break);
/* Sleep and try again. */
ac_nir_sleep(b, sleep_time);
}
}
nir_pop_loop(b, loop);