[Bug tree-optimization/120020] [Optimization opportunity] Optimize repeated inline assembly operations when semantically equivalent

[a1343922569 at outlook dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120020

--- Comment #6 from Jin Haobo <a1343922569 at outlook dot com> ---
Sorry, the code in my reproduction is wrong. I will re-show the C++ code. This
code is right, and Clang generate the right optimal assembly indeed.