[Bug middle-end/91623] [8 Regression] -msse4.1 -O3 segfault in /usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/include/smmintrin.h:270:10

[soap at gentoo dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91623

--- Comment #19 from David Seifert <soap at gentoo dot org> ---
(In reply to Jakub Jelinek from comment #17)
> Can't reproduce, compiles without any ICE since the above mentioned commits.
> In #c15 you are clearing testing with GCC 9.2.0, but that is expected, the
> bug has not been fixed in 9.2.0 which has been released in August 2019, but
> rather has been backported to the 9 branch in October 2019, so you need at
> least 9.2.1 20191022 snapshot

Would it be possible to just get the code backport to GCC 7 too? I know the GCC
7 branch is closed, but we could add the patch in Gentoo. I tried backporting
your mainline patch but compilation bailed out on missing "vector_cst_elt".