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nir/opt_load_store_vectorize: improve ssbo/global alias analysis

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If either the global access or the ssbo access is restrict, they shouldn't
alias.

No fossil-db changes.

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14227>
This commit is contained in:
Rhys Perry 2021-03-09 16:11:12 +00:00 • committed by Marge Bot
parent ac8afe3f44
commit c56cf157c5
1 changed files with 13 additions and 0 deletions
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13
src/compiler/nir/nir_opt_load_store_vectorize.c
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@ -926,6 +926,19 @@ bindings_different_restrict(nir_shader *shader, struct entry *a, struct entry *b
a_var = a->key->var;
b_var = b->key->var;
different_bindings = a_var != b_var;
} else if (!!a->key->resource != !!b->key->resource) {
/* comparing global and ssbo access */
different_bindings = true;
if (a->key->resource) {
nir_binding a_res = nir_chase_binding(nir_src_for_ssa(a->key->resource));
a_var = nir_get_binding_variable(shader, a_res);
}
if (b->key->resource) {
nir_binding b_res = nir_chase_binding(nir_src_for_ssa(b->key->resource));
b_var = nir_get_binding_variable(shader, b_res);
}
} else {
return false;
}