https://git.ruby-lang.org/ruby.git/commit/?id=f80069820e

From f80069820e1f7d44ef9c385254d498468a352021 Mon Sep 17 00:00:00 2001
From: Alan Wu <XrXr@u...>
Date: Fri, 22 Oct 2021 13:41:34 -0400
Subject: YJIT: Don't take VM lock on constant IC fill when disabled

While theoretically it's fine to take the lock and then immediately release
it, we don't need to do it when YJIT is off.
---
 yjit_iface.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/yjit_iface.c b/yjit_iface.c
index 73b51fd50d..870a8d1efd 100644
--- a/yjit_iface.c
+++ b/yjit_iface.c
@@ -592,6 +592,8 @@ rb_yjit_constant_state_changed(void) https://github.com/ruby/ruby/blob/trunk/yjit_iface.c#L592
 void
 rb_yjit_constant_ic_update(const rb_iseq_t *iseq, IC ic)
 {
+    if (!rb_yjit_enabled_p()) return;
+
     // We can't generate code in these situations, so no need to invalidate.
     // See gen_opt_getinlinecache.
     if (ic->entry->ic_cref || rb_multi_ractor_p()) {
-- 
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