[Bug target/101956] Miss vectorization from v4hi to v4df

[crazylht at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101956

--- Comment #2 from Hongtao.liu <crazylht at gmail dot com> ---


(In reply to Hongtao.liu from comment #1)
> test4.c:4:9: missed:   conversion not supported by target.
> 
> SLP expect {zero_,}extendv4hiv4df?
Typo floatv4hiv4df
> 
> loop vectorizer can automatically try extendv8hiv8si + extendv4siv4df
and floatv4siv4df here.
> void
> foo1 (double* p, short* q, int n)
> {
>     for (int i = 0; i != n; i++)
>       p[i] = q[i];
> }