On 10/28/2011 11:41 AM, Jakub Jelinek wrote: > On Fri, Oct 28, 2011 at 06:50:49PM +0200, Jakub Jelinek wrote: >> On Fri, Oct 28, 2011 at 09:07:31AM -0700, Richard Henderson wrote: >>> I think this is the same problem as Jakub is attacking here: >>> >>> http://gcc.gnu.org/ml/gcc-patches/2011-10/msg02503.html >> >> It has been checked in already. But my patch only deals >> with the vector << vector case, vector << scalar (including >> vector << scalar implemented using vector << vector) supposedly still >> needs fold_const somewhere if the type sizes disagree. > > 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. I'll try to look at it later today. r~
