YJIT: Optimize local variables when EP == BP (take 2) (#10607)

* Revert "Revert "YJIT: Optimize local variables when EP == BP" (#10584)"

This reverts commit c8783441952217c18e523749c821f82cd7e5d222.

* YJIT: Take care of GC references in ISEQ invariants

Co-authored-by: Alan Wu <[email protected]>

---------

Co-authored-by: Alan Wu <[email protected]>

1 files changed, 5 insertions, 0 deletions

diff --git a/vm.c b/vm.c
index 646b92accf..902ac48847 100644
--- a/vm.c
+++ b/vm.c
@@ -1007,6 +1007,11 @@ vm_make_env_each(const rb_execution_context_t * const ec, rb_control_frame_t *co
     }
 #endif
 
+    // Invalidate JIT code that assumes cfp->ep == vm_base_ptr(cfp).
+    if (env->iseq) {
+        rb_yjit_invalidate_ep_is_bp(env->iseq);
+    }
+
     return (VALUE)env;
 }