nir/propagate_invariant: Don't add NULL vars to the hash table
Fixes: 8410cf66d
"nir/propagate_invariant: Skip unknown vars"
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
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@ -65,12 +65,21 @@ add_cf_node(nir_cf_node *cf, struct set *invariants)
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static void
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add_var(nir_variable *var, struct set *invariants)
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{
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_mesa_set_add(invariants, var);
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/* Because we pass the result of nir_intrinsic_get_var directly to this
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* function, it's possible for var to be NULL if, for instance, there's a
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* cast somewhere in the chain.
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*/
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if (var != NULL)
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_mesa_set_add(invariants, var);
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}
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static bool
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var_is_invariant(nir_variable *var, struct set * invariants)
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{
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/* Because we pass the result of nir_intrinsic_get_var directly to this
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* function, it's possible for var to be NULL if, for instance, there's a
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* cast somewhere in the chain.
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*/
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return var && (var->data.invariant || _mesa_set_search(invariants, var));
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}
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