YJIT: Remove duplicate cfp->iseq accessor

yjit.c

@@ -798,13 +798,6 @@ rb_set_cfp_sp(struct rb_control_frame_struct *cfp, VALUE *sp)
     cfp->sp = sp;
 }
 
-rb_iseq_t *
-rb_cfp_get_iseq(struct rb_control_frame_struct *cfp)
-{
-    // TODO(alan) could assert frame type here to make sure that it's a ruby frame with an iseq.
-    return (rb_iseq_t*)cfp->iseq;
-}
-
 VALUE
 rb_get_cfp_self(struct rb_control_frame_struct *cfp)
 {

yjit/bindgen/src/main.rs

@@ -307,7 +307,6 @@ fn main() {
         .allowlist_function("rb_yjit_iseq_builtin_attrs")
         .allowlist_function("rb_yjit_builtin_function")
         .allowlist_function("rb_set_cfp_(pc|sp)")
-        .allowlist_function("rb_cfp_get_iseq")
         .allowlist_function("rb_yjit_multi_ractor_p")
         .allowlist_function("rb_c_method_tracing_currently_enabled")
         .allowlist_function("rb_full_cfunc_return")

yjit/src/core.rs

@@ -2518,7 +2518,7 @@ fn branch_stub_hit_body(branch_ptr: *const c_void, target_idx: u32, ec: EcPtr) -
         let cfp = get_ec_cfp(ec);
         let original_interp_sp = get_cfp_sp(cfp);
 
-        let running_iseq = rb_cfp_get_iseq(cfp);
+        let running_iseq = get_cfp_iseq(cfp);
         let reconned_pc = rb_iseq_pc_at_idx(running_iseq, target_blockid.idx.into());
         let reconned_sp = original_interp_sp.offset(target_ctx.sp_offset.into());
         // Unlike in the interpreter, our `leave` doesn't write to the caller's