Disable liveness "dead" instruction by default.

The liveness instruction takes up about 10% of the bytecode bloat file.
It is not very useful, it is duplicate information that can be obtained
from the def/user chain.

This change disables the liveness instruction by default.
The caller can track_pseudo_death() if needed.

Signed-Off-By: Christopher Li <sparse@chrisli.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/lib.c b/lib.c
index cdc7195..42d47f0 100644
--- a/lib.c
+++ b/lib.c
@@ -205,7 +205,8 @@ int Wenum_mismatch = 1;
 int Wdo_while = 1;
 int Wuninitialized = 1;
 
-int dbg_entry;
+int dbg_entry = 0;
+int dbg_dead = 0;
 
 int preprocess_only;
 char *include;
@@ -405,6 +406,7 @@ static char **handle_switch_W(char *arg, char **next)
 
 static struct warning debugs[] = {
 	{ "entry", &dbg_entry},
+	{ "dead", &dbg_dead},
 };