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nir/opt_uniform_subgroup: wire up mbcnt_amd path

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Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38867>
This commit is contained in:
Georg Lehmann 2025-12-09 15:37:49 +01:00 • committed by Marge Bot
parent 5778436e99
commit e648e551c1
1 changed files with 2 additions and 3 deletions
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5
src/compiler/nir/nir_opt_uniform_subgroup.c
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@ -21,7 +21,6 @@ ballot_bit_count(nir_builder *b, nir_def *ballot)
static nir_def *
count_active_invocations(nir_builder *b, nir_def *value, bool inclusive,
bool has_mbcnt_amd,
const nir_lower_subgroups_options *options)
{
/* For the non-inclusive case, the two paths are functionally the same.
@ -39,7 +38,7 @@ count_active_invocations(nir_builder *b, nir_def *value, bool inclusive,
* When those conditions are met, the inclusive count is the exclusive
* count plus one.
*/
if (has_mbcnt_amd) {
if (options->lower_ballot_bit_count_to_mbcnt_amd) {
return nir_mbcnt_amd(b, value, nir_imm_int(b, (int)inclusive));
} else {
nir_def *mask =
@ -116,7 +115,7 @@ opt_uniform_subgroup_instr(nir_builder *b, nir_intrinsic_instr *intrin, void *_s
} else {
count = count_active_invocations(b, ballot,
intrin->intrinsic == nir_intrinsic_inclusive_scan,
false, options);
options);
}
const unsigned bit_size = intrin->src[0].ssa->bit_size;