+
+/** Returns the next block, disregarding structure
+ *
+ * The ordering is deterministic but has no guarantees beyond that. In
+ * particular, it is not guaranteed to be dominance-preserving.
+ */
+nir_block *nir_block_unstructured_next(nir_block *block);
+nir_block *nir_unstructured_start_block(nir_function_impl *impl);
+
+#define nir_foreach_block_unstructured(block, impl) \
+ for (nir_block *block = nir_unstructured_start_block(impl); block != NULL; \
+ block = nir_block_unstructured_next(block))
+
+#define nir_foreach_block_unstructured_safe(block, impl) \
+ for (nir_block *block = nir_unstructured_start_block(impl), \
+ *next = nir_block_unstructured_next(block); \
+ block != NULL; \
+ block = next, next = nir_block_unstructured_next(block))
+