pub extern "C" fn gc_trigger(vmctx: *mut VMContext)Expand description
GC trigger: called by JIT code when alloc_ptr exceeds alloc_limit.
This function MUST be compiled with frame pointers preserved (the whole crate uses preserve_frame_pointers, and the Rust profile should have force-frame-pointers = true for the gc path).
The frame walker in gc_trigger reads RBP to walk the JIT stack.