[Bug ipa/99309] [13/14 Regression] Segmentation fault with __builtin_constant_p usage at -O2

[sjames at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99309

--- Comment #19 from Sam James <sjames at gcc dot gnu.org> ---
fixed-but-no-testcase for the original, dunno if a gimple testcase is possible
now that it is latent (not got the hang of that yet, as dumps aren't seemingly
very usable even as a basis for that)