[Qemu-devel] [PATCH 09/22] exec-all: shrink tb->invalid to uint8_t

[Emilio G. Cota]

To avoid wasting a byte. I don't have any use in mind for this byte,
but I think it's good to leave this byte explicitly free for future use.
See this discussion for how the u16 came to be:
  https://lists.gnu.org/archive/html/qemu-devel/2016-07/msg04564.html
We could use a bool but in some systems that would take > 1 byte.

Signed-off-by: Emilio G. Cota <address@hidden>
---
 include/exec/exec-all.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h
index 8326e7d..a388756 100644
--- a/include/exec/exec-all.h
+++ b/include/exec/exec-all.h
@@ -327,7 +327,7 @@ struct TranslationBlock {
 #define CF_USE_ICOUNT  0x20000
 #define CF_IGNORE_ICOUNT 0x40000 /* Do not generate icount code */
 
-    uint16_t invalid;
+    uint8_t invalid;
 
     void *tc_ptr;    /* pointer to the translated code */
     uint8_t *tc_search;  /* pointer to search data */
-- 
2.7.4