Method write_cache_ptr

crates/compiler-core/src/bytecode.rs:756–758

Store a pointer-sized value atomically in the pointer cache at `index`. Uses a single `AtomicUsize` store to prevent torn writes when multiple threads specialize the same instruction concurrently. # Safety - `index` must be in bounds. - `value` must be `0` or a valid `*const PyObject` encoded as `usize`. - Callers must follow the cache invalidation/upgrade protocol: invalidate the version guard

(&self, index: usize, value: usize)

    ///   invalidate the version guard before writing and publish the new
    ///   version after writing.
    pub unsafe fn write_cache_ptr(&self, index: usize, value: usize) {
        self.pointer_cache[index].store(value, Ordering::Relaxed);
    }

    /// Load a pointer-sized value atomically from the pointer cache at `index`.
    ///