nir/propagate_invariant: Skip unknown vars
If we can't find the variable from the deref, just assume it isn't invariant and continue on. This can happen if, for instance, we're writing to a deref that points into an SSBO. Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
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@ -71,7 +71,7 @@ add_var(nir_variable *var, struct set *invariants)
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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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return var->data.invariant || _mesa_set_search(invariants, var);
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return var && (var->data.invariant || _mesa_set_search(invariants, var));
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}
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static void
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