vtn_function_emit(struct vtn_builder *b, struct vtn_function *func,
vtn_instruction_handler instruction_handler)
{
+ static int force_unstructured = -1;
+ if (force_unstructured < 0) {
+ force_unstructured =
+ env_var_as_boolean("MESA_SPIRV_FORCE_UNSTRUCTURED", false);
+ }
+
nir_builder_init(&b->nb, func->impl);
b->func = func;
b->nb.cursor = nir_after_cf_list(&func->impl->body);
b->has_loop_continue = false;
b->phi_table = _mesa_pointer_hash_table_create(b);
- if (b->shader->info.stage == MESA_SHADER_KERNEL) {
+ if (b->shader->info.stage == MESA_SHADER_KERNEL || force_unstructured) {
b->func->impl->structured = false;
vtn_emit_cf_func_unstructured(b, func, instruction_handler);
} else {