YJIT: port call threshold logic from Rust to C for performance (#8628)

* Port call threshold logic from Rust to C for performance

* Prefix global/field names with yjit_

* Fix linker error

* Fix preprocessor condition for rb_yjit_threshold_hit

* Fix third linker issue

* Exclude yjit_calls_at_interv from RJIT bindgen

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Co-authored-by: Takashi Kokubun <takashikkbn@gmail.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/vm_core.h b/vm_core.h
index 6f2fca6537..acad6280be 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -524,6 +524,8 @@ struct rb_iseq_constant_body {
 #if USE_YJIT
     // YJIT stores some data on each iseq.
     void *yjit_payload;
+    // Used to estimate how frequently this ISEQ gets called
+    uint64_t yjit_calls_at_interv;
 #endif
 };