[Bug target/117116] [15 regression] error: unrecognizable insn: with -march=znver3

[liuhongt at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117116

--- Comment #3 from Hongtao Liu <liuhongt at gcc dot gnu.org> ---
A simple testcase

typedef long long v4di __attribute__((vector_size(32)));

v4di
foo (long long a)
{
    return __extension__(v4di){(long long)foo, 1, 1, 1};
}

reproduced with -O2 -mavx2, failed at least since gcc4.8.1