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nir/vars_to_ssa: Remove an unnecessary deref_arry_type check 

Only fully-qualified direct derefs, collected in direct_deref_nodes,
are checked for aliasing, so it is already known up front that they
have only array derefs of type direct.

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Caio Marcelo de Oliveira Filho 2018-04-10 23:13:39 -07:00 committed by Jason Ekstrand
parent 1c9bccdeb8
commit fac9dd1b93
1 changed files with 5 additions and 4 deletions
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9
src/compiler/nir/nir_lower_vars_to_ssa.c
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@ -298,15 +298,16 @@ deref_may_be_aliased_node(struct deref_node *node, nir_deref *deref,
switch (deref->child->deref_type) {
case nir_deref_type_array: {
nir_deref_array *arr = nir_deref_as_array(deref->child);
if (arr->deref_array_type == nir_deref_array_type_indirect)
return true;
/* This is a child of one of the derefs in direct_deref_nodes,
* so we know it is direct.
*/
assert(arr->deref_array_type == nir_deref_array_type_direct);
/* If there is an indirect at this level, we're aliased. */
if (node->indirect)
return true;
assert(arr->deref_array_type == nir_deref_array_type_direct);
if (node->children[arr->base_offset] &&
deref_may_be_aliased_node(node->children[arr->base_offset],
deref->child, state))