Actually, please hold off on this. The test in general is just faulty. I'll get something more complete later on.
Sorry for the noise, Bill On Thu, 2016-01-28 at 11:45 -0600, Bill Schmidt wrote: > Hi, > > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65546 discusses the failure > of gcc.dg/vect/costmodel/ppc/costmodel-vect-31a.c. The test fails > differently on GCC 4.9 and 5 than it does on GCC 6. For GCC 6, the test > case is faulty, as we only expect to see the "vectorization not > profitable" statement when misaligned loads/stores are not efficient on > the target hardware. This patch fixes the test for GCC 6. > > Something else is going on in the earlier releases, which I plan to look > at separately. > > Verified on powerpc64le-unknown-linux-gnu. Is this okay for trunk? > > Thanks, > Bill > > > 2016-01-28 Bill Schmidt <wschm...@linux.vnet.ibm.com> > > PR target/65546 > * gcc.dg/vect/costmodel/ppc/costmodel-vect-31a.c: Disable check > for "vectorization not profitable" when the target supports > misaligned loads and stores. > > > Index: gcc/testsuite/gcc.dg/vect/costmodel/ppc/costmodel-vect-31a.c > =================================================================== > --- gcc/testsuite/gcc.dg/vect/costmodel/ppc/costmodel-vect-31a.c > (revision 232890) > +++ gcc/testsuite/gcc.dg/vect/costmodel/ppc/costmodel-vect-31a.c > (working copy) > @@ -46,5 +46,5 @@ int main (void) > return main1 (); > } > > -/* { dg-final { scan-tree-dump-times "vectorization not profitable" 1 "vect" > } } */ > +/* { dg-final { scan-tree-dump-times "vectorization not profitable" 1 "vect" > { target { ! vect_hw_misalign } } } } */ > /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 0 "vect" { target > { ! vect_hw_misalign } } } } */ > >