On Fri, Oct 28, 2011 at 11:44:17AM -0700, Richard Henderson wrote:
> > A wild guess, though untested, because I don't have a reproducer:
> >
> > 2011-10-28 Jakub Jelinek <ja...@redhat.com>
> >
> > * tree-vect-stmts.c (vectorizable_shift): If op1 is vect_external_def
> > and has different type from op0, cast it to op0's type before the
> > loop first.
>
> I suspect the problem is in optabs.c, not here.
Possible. Though, if I disable all "ashl<mode>3", "lshr<mode>3" and
"ashr<mode>3" expanders in sse.md, I get without the above patch ICEs on
e.g.
long long d[64], e, j[64];
void
f4 (void)
{
int i;
for (i = 0; i < 64; i++)
j[i] = d[i] << e;
}
with -O3 -mxop and -O3 -mavx2 and the patch fixes those.
Jakub
