[Bug rtl-optimization/89430] A missing ifcvt optimization to generate csel

[jiangning.liu at amperecomputing dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89430

--- Comment #4 from Jiangning Liu <jiangning.liu at amperecomputing dot com> ---
>    We need to be careful with loads
>    or stores, for instance a load might not trap, while a store would,
>    so if we see a dominating read access this doesn't mean that a later
>    write access would not trap.  

Why? For this case, there is a dominating load for the same address. I don't
see why it might trap. Any example?