[Bug tree-optimization/120780] Missed __builtin_dynamic_object_size optimization(?)

[siddhesh at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120780

--- Comment #20 from Siddhesh Poyarekar <siddhesh at gcc dot gnu.org> ---
I'll backport to the gcc-15 branch after it marinates on trunk for a day or so,
allowing various CIs to test it.