https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88919
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-01-21
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Passes for me on x86_64-linux. Can you investigate a bit more? The key
observation should be that compared to before the rev. the loop
for (int i = 0; i < 512; ++i)
{
x[2*i] = x[2*i] << (i+1);
x[2*i+1] = x[2*i+1] << (i+1);
}
should be vectorized using a vector << vector shift (rather than
vector << scalar).
