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agx: optimize elect()

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Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29179>
This commit is contained in:
Alyssa Rosenzweig
2024-05-06 22:23:59 -04:00
committed by Marge Bot
parent bc26e11c2a
commit bcffc84306
1 changed files with 6 additions and 1 deletions
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src/asahi/compiler/agx_nir_lower_subgroups.c
+6 -1
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@@ -50,6 +50,12 @@ lower(nir_builder *b, nir_intrinsic_instr *intr, void *data)
return true;
}
case nir_intrinsic_elect: {
nir_def *active_id = nir_load_active_subgroup_invocation_agx(b, 16);
nir_def_rewrite_uses(&intr->def, nir_ieq_imm(b, active_id, 0));
return true;
}
case nir_intrinsic_first_invocation: {
nir_def *active_id = nir_load_active_subgroup_invocation_agx(b, 16);
nir_def *is_first = nir_ieq_imm(b, active_id, 0);
@@ -202,7 +208,6 @@ agx_nir_lower_subgroups(nir_shader *s)
.lower_relative_shuffle = true,
.lower_rotate_to_shuffle = true,
.lower_subgroup_masks = true,
.lower_elect = true,
.lower_reduce = true,
.ballot_components = 1,
.ballot_bit_size = 32,