# Not understand 1. [wmb](https://chatgpt.com/share/6804a04b-3c7c-8012-88f4-6afbcadc4fb9) [並行程式設計: Atomics 操作 - Store-Buffer](https://hackmd.io/@sysprog/concurrency/%2F%40sysprog%2Fconcurrency-atomics#Store-Buffer): the example code has no effect on aarch64 and x64. [store forward有可能失效](https://easyperf.net/blog/2018/03/09/Store-forwarding) based on [**The microarchitecture of Intel, AMD, and VIA CPUs** - An optimization guide for assembly programmers and compiler makers](https://www.agner.org/optimize/microarchitecture.pdf) 4.