volatile stores are never dead

so they shouldn't be killed.

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

1 files changed, 2 insertions, 0 deletions

diff --git a/memops.c b/memops.c
index 31fd2d3e..8020f2e6 100644
--- a/memops.c
+++ b/memops.c
@@ -215,6 +215,8 @@ static bool try_to_kill_store(pseudo_t pseudo, struct instruction *insn,
 			return false;
 		if (dom->opcode == OP_LOAD)
 			return false;
+		if (dom->is_volatile)
+			return false;
 		/* Yeehaa! Found one! */
 		kill_instruction_force(dom);
 	}