[Bug c/107831] Missed optimization: -fclash-stack-protection causes unnecessary code generation for dynamic stack allocations that are clearly less than a page

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107831

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Alloca itself doesn't touch the stack on many architectures, and the code
doesn't have to have a function call in between.