YJIT: Add a live ISeq counter

It's an estimator for application size and could be used as a
compilation heuristic later.

Co-authored-by: Maxime Chevalier-Boisvert <[email protected]>
Co-authored-by: Takashi Kokubun <[email protected]>

1 files changed, 2 insertions, 0 deletions

diff --git a/iseq.c b/iseq.c
index 0bd4b2812b..1c7bafc5a2 100644
--- a/iseq.c
+++ b/iseq.c
@@ -168,6 +168,8 @@ rb_iseq_free(const rb_iseq_t *iseq)
         rb_rjit_free_iseq(iseq); /* Notify RJIT */
 #if USE_YJIT
         rb_yjit_iseq_free(body->yjit_payload);
+        RUBY_ASSERT(rb_yjit_live_iseq_count > 0);
+        rb_yjit_live_iseq_count--;
 #endif
         ruby_xfree((void *)body->iseq_encoded);
         ruby_xfree((void *)body->insns_info.body);