[Bug tree-optimization/65893] ifcombine not done anymore on expansion of va_arg

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65893

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
IMHO it makes sense to move stdarg a bit earlier, after pass_dce.