https://git.ruby-lang.org/ruby.git/commit/?id=c4b99d6a42

From c4b99d6a427060cadde7f5561c5a3db626bc26ba Mon Sep 17 00:00:00 2001
From: Maxime Chevalier-Boisvert <maxime.chevalierboisvert@s...>
Date: Mon, 23 Aug 2021 10:43:39 -0400
Subject: Add ASM comment

---
 yjit_codegen.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/yjit_codegen.c b/yjit_codegen.c
index ca4718380e..127027ffa7 100644
--- a/yjit_codegen.c
+++ b/yjit_codegen.c
@@ -1454,6 +1454,7 @@ gen_get_ivar(jitstate_t *jit, ctx_t *ctx, const int max_chain_depth, VALUE compt https://github.com/ruby/ruby/blob/trunk/yjit_codegen.c#L1454
 
             // Guard that the variable is not Qundef
             // TODO: use cmov to push Qnil in this case
+            ADD_COMMENT(cb, "guard value not Qundef");
             cmp(cb, REG1, imm_opnd(Qundef));
             je_ptr(cb, COUNTED_EXIT(side_exit, getivar_undef));
 
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