[llvm] [LICM]The store instruction is prevented from (PR #69413)

[via llvm-commits]

XingYuShuai wrote:

> As I have already explained to you, your code is not well-defined. There is nothing to fix in LLVM, you need to fix your code to use an atomic variable instead.

When Run_Index is atomic, there is no problem with open source version.  For details about the test cases and results, see：https://github.com/llvm/llvm-project/issues/68776#issuecomment-1769726795

And I also added my patch and retested the above test cases to keep consistent with the original version.
![image](https://github.com/llvm/llvm-project/assets/43949371/01f57f58-2881-4faa-9174-8e3ce4ad9d42)

Does that explain your problem? If you still have a problem, can you describe your problem in more detail? For example, in the test-code2.txt test case I provided, which variable is atomic? Thank you very much.



https://github.com/llvm/llvm-project/pull/69413