make_usage() kill the corresponding instruction when the last
user have been removed. This is often desired but not always.
Make a new version __remove_usage() taking a flag telling if
we want to kill the instruction or not.
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@xxxxxxxxx>
---
simplify.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/simplify.c b/simplify.c
index 0a3207404..247c591d7 100644
--- a/simplify.c
+++ b/simplify.c
@@ -184,23 +184,28 @@ out:
return count;
}
-static inline void remove_usage(pseudo_t p, pseudo_t *usep)
+static inline void __remove_usage(pseudo_t p, pseudo_t *usep, int kill)
{
if (has_use_list(p)) {
if (p->type == PSEUDO_SYM)
repeat_phase |= REPEAT_SYMBOL_CLEANUP;
delete_pseudo_user_list_entry(&p->users, usep, 1);
- if (!p->users)
+ if (kill && !p->users)
kill_instruction(p->def);
}
}
+static inline void remove_usage(pseudo_t p, pseudo_t *usep)
+{
+ __remove_usage(p, usep, 1);
+}
+
void kill_use(pseudo_t *usep)
{
if (usep) {
pseudo_t p = *usep;
*usep = VOID;
- remove_usage(p, usep);
+ __remove_usage(p, usep, 1);
}
}
--
2.16.2
--
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