i965/cfg: Add a foreach_inst_in_block_safe macro.

Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
2014-07-10 17:30:40 -07:00
parent c51b0861e4
commit 26624b85e7
1 changed files with 8 additions and 0 deletions
@@ -120,6 +120,14 @@ struct cfg_t {
        __inst != __block->end->next;                          \
        __inst = (__type *)__inst->next)

+#define foreach_inst_in_block_safe(__type, __inst, __block)    \
+   for (__type *__inst = (__type *)__block->start,             \
+               *__next = (__type *)__inst->next,               \
+               *__end = (__type *)__block->end->next->next;    \
+        __next != __end;                                       \
+        __inst = __next,                                       \
+        __next = (__type *)__next->next)
+
 #define foreach_inst_in_block_reverse(__type, __inst, __block) \
   for (__type *__inst = (__type *)__block->end;               \
        __inst != __block->start->prev;                        \