let kill_instruction() report if changes were made

This let us take others actions if no changes have been made
and allow simpler call to this function since its effect on
'repeat_phase' can be directly returned.

Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/flow.h b/flow.h
index 6743db1e..8e96f62f 100644
--- a/flow.h
+++ b/flow.h
@@ -26,14 +26,14 @@ extern void kill_bb(struct basic_block *);
 extern void kill_use(pseudo_t *);
 extern void kill_unreachable_bbs(struct entrypoint *ep);
 
-extern void kill_insn(struct instruction *, int force);
-static inline void kill_instruction(struct instruction *insn)
+extern int kill_insn(struct instruction *, int force);
+static inline int kill_instruction(struct instruction *insn)
 {
-	kill_insn(insn, 0);
+	return kill_insn(insn, 0);
 }
-static inline void kill_instruction_force(struct instruction *insn)
+static inline int kill_instruction_force(struct instruction *insn)
 {
-	kill_insn(insn, 1);
+	return kill_insn(insn, 1);
 }
 
 void check_access(struct instruction *insn);