https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109509
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
when working on another testcase I noticed our inlining itself creates a lot of
garbage - copies can pile up, esp. when not optimizing. The PR79416 testcase
is similar than yours but using asm("nop") and thus not running into PTA
scalability.
