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nir/lower_memory_model: remove empty lowered barriers

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Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36080>
This commit is contained in:
Rhys Perry 2025-07-04 15:51:25 +01:00 • committed by Marge Bot
parent 0512ba8743
commit d4b329219e
1 changed files with 7 additions and 2 deletions
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9
src/compiler/nir/nir_lower_memory_model.c
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@ -112,6 +112,11 @@ visit_instr(nir_instr *instr, uint32_t *cur_modes, unsigned vis_avail_sem)
unsigned semantics = nir_intrinsic_memory_semantics(intrin);
nir_intrinsic_set_memory_semantics(
intrin, semantics & ~vis_avail_sem);
if (nir_intrinsic_memory_semantics(intrin) == 0 &&
nir_intrinsic_execution_scope(intrin) <= SCOPE_INVOCATION)
nir_instr_remove(instr);
return true;
}
@ -151,7 +156,7 @@ lower_make_visible(nir_cf_node *cf_node, uint32_t *cur_modes)
switch (cf_node->type) {
case nir_cf_node_block: {
nir_block *block = nir_cf_node_as_block(cf_node);
nir_foreach_instr(instr, block)
nir_foreach_instr_safe(instr, block)
progress |= visit_instr(instr, cur_modes, NIR_MEMORY_MAKE_VISIBLE);
break;
}
@ -191,7 +196,7 @@ lower_make_available(nir_cf_node *cf_node, uint32_t *cur_modes)
switch (cf_node->type) {
case nir_cf_node_block: {
nir_block *block = nir_cf_node_as_block(cf_node);
nir_foreach_instr_reverse(instr, block)
nir_foreach_instr_reverse_safe(instr, block)
progress |= visit_instr(instr, cur_modes, NIR_MEMORY_MAKE_AVAILABLE);
break;
}