bool nir_is_per_vertex_io(nir_variable *var, gl_shader_stage stage);
void nir_lower_io_types(nir_shader *shader);
-void nir_lower_regs_to_ssa_impl(nir_function_impl *impl);
-void nir_lower_regs_to_ssa(nir_shader *shader);
+bool nir_lower_regs_to_ssa_impl(nir_function_impl *impl);
+bool nir_lower_regs_to_ssa(nir_shader *shader);
bool nir_lower_vars_to_ssa(nir_shader *shader);
bool nir_remove_dead_variables(nir_shader *shader, nir_variable_mode modes);