+#define mir_foreach_successor(blk, v) \
+ struct midgard_block *v; \
+ struct midgard_block **_v; \
+ for (_v = &blk->successors[0], \
+ v = *_v; \
+ v != NULL && _v < &blk->successors[2]; \
+ _v++, v = *_v) \
+
+/* Based on set_foreach, expanded with automatic type casts */
+
+#define mir_foreach_predecessor(blk, v) \
+ struct set_entry *_entry_##v; \
+ struct midgard_block *v; \
+ for (_entry_##v = _mesa_set_next_entry(blk->predecessors, NULL), \
+ v = (struct midgard_block *) (_entry_##v ? _entry_##v->key : NULL); \
+ _entry_##v != NULL; \
+ _entry_##v = _mesa_set_next_entry(blk->predecessors, _entry_##v), \
+ v = (struct midgard_block *) (_entry_##v ? _entry_##v->key : NULL))
+
+#define mir_foreach_src(ins, v) \
+ for (unsigned v = 0; v < ARRAY_SIZE(ins->ssa_args.src); ++v)
+