[Bug tree-optimization/66419] [6 regression] FAIL: gcc.target/aarch64/aapcs64/va_arg-6.c execution, -O3 -g

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66419

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Ah, because we detect it as subchain which fails to consider gaps.