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Re: [Boolean Vector, patch 1/5] Introduce boolean vector to be used as a vector comparison type
- From: Richard Biener <richard dot guenther at gmail dot com>
- To: Ilya Enkovich <enkovich dot gnu at gmail dot com>
- Cc: Andreas Schwab <schwab at suse dot de>, gcc-patches <gcc-patches at gcc dot gnu dot org>, Jeff Law <law at redhat dot com>
- Date: Fri, 23 Oct 2015 14:51:27 +0200
- Subject: Re: [Boolean Vector, patch 1/5] Introduce boolean vector to be used as a vector comparison type
- Authentication-results: sourceware.org; auth=none
- References: <20151002135921 dot GE26618 at msticlxl57 dot ims dot intel dot com> <mvmbnbrmcrw dot fsf at hawking dot suse dot de> <CAMbmDYb9MhPrrs+L50XAQA8N_aYvd+TACEQ-BFbRtduPjH7V+g at mail dot gmail dot com> <mvm7fmfmbnv dot fsf at hawking dot suse dot de> <20151022162105 dot GB23452 at msticlxl57 dot ims dot intel dot com> <CAFiYyc3aRo-=kW-qD3xCaCkTVkJ=Zbaq-pZhvAd7XJo=QSpsxg at mail dot gmail dot com> <20151023111240 dot GC23452 at msticlxl57 dot ims dot intel dot com>
On Fri, Oct 23, 2015 at 1:12 PM, Ilya Enkovich <enkovich.gnu@gmail.com> wrote:
> On 23 Oct 11:40, Richard Biener wrote:
>> On Thu, Oct 22, 2015 at 6:21 PM, Ilya Enkovich <enkovich.gnu@gmail.com> wrote:
>> > On 22 Oct 12:37, Andreas Schwab wrote:
>> >> Ilya Enkovich <enkovich.gnu@gmail.com> writes:
>> >>
>> >> > 2015-10-22 13:13 GMT+03:00 Andreas Schwab <schwab@suse.de>:
>> >> >> FAIL: gcc.c-torture/compile/pr54713-1.c -O0 (internal compiler error)
>> >> >
>> >> > Can't reproduce it on i386. What's config used?
>> >>
>> >> http://gcc.gnu.org/ml/gcc-testresults/2015-10/msg02350.html
>> >> http://gcc.gnu.org/ml/gcc-testresults/2015-10/msg02361.html
>> >> http://gcc.gnu.org/ml/gcc-testresults/2015-10/msg02396.html
>> >>
>> >> Andreas.
>> >>
>> >> --
>> >> Andreas Schwab, SUSE Labs, schwab@suse.de
>> >> GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7
>> >> "And now for something completely different."
>> >
>> > Thanks!
>> > The problem is in wrong mboolean vector size in case target cannot provide a mode for it. I tested it on i386 with vector extension switched off, but with extensions off vector modes still exist, thus I missed this case. Here is a patch to fix it. Bootstrapped and regtested on powerpc64le-unknown-linux-gnu. I see disappeared fails:
>> >
>> > gcc.c-torture/compile/pr54713-2.c -O0 (test for excess errors)
>> > gcc.c-torture/compile/pr54713-3.c -O0 (test for excess errors)
>> >
>> > I believe other targets should be fixed as well.
>> >
>> > Thanks,
>> > Ilya
>> > --
>> > gcc/
>> >
>> > 2015-10-22 Ilya Enkovich <enkovich.gnu@gmail.com>
>> >
>> > * tree.c (build_truth_vector_type): Support BLK mode
>> > returned for boolean vector.
>> >
>> >
>> > diff --git a/gcc/tree.c b/gcc/tree.c
>> > index 7d10dd6..836b69a 100644
>> > --- a/gcc/tree.c
>> > +++ b/gcc/tree.c
>> > @@ -10654,8 +10654,12 @@ build_truth_vector_type (unsigned nunits, unsigned vector_size)
>> >
>> > gcc_assert (mask_mode != VOIDmode);
>> >
>> > - unsigned HOST_WIDE_INT esize = GET_MODE_BITSIZE (mask_mode) / nunits;
>> > - gcc_assert (esize * nunits == GET_MODE_BITSIZE (mask_mode));
>> > + unsigned HOST_WIDE_INT vsize = GET_MODE_BITSIZE (mask_mode);
>> > + if (!vsize)
>>
>> This should better check for mask_mode == BLKmode instead?
>
> Here is a version with BLKmode check. I bootstrapped it on powerpc64le-unknown-linux-gnu (c,c++,fotran only) and checked pr54713-2.c, pr54713-3.c are fixed by this patch. Is it OK for trunk?
Ok.
Richard.
> Thanks,
> Ilya
> --
> gcc/
>
> 2015-10-23 Ilya Enkovich <enkovich.gnu@gmail.com>
>
> PR middle-end/68066
> * tree.c (build_truth_vector_type): Support BLK mode
> returned for boolean vector.
>
>
> diff --git a/gcc/tree.c b/gcc/tree.c
> index 09df67e..79bbd07 100644
> --- a/gcc/tree.c
> +++ b/gcc/tree.c
> @@ -10671,8 +10671,14 @@ build_truth_vector_type (unsigned nunits, unsigned vector_size)
>
> gcc_assert (mask_mode != VOIDmode);
>
> - unsigned HOST_WIDE_INT esize = GET_MODE_BITSIZE (mask_mode) / nunits;
> - gcc_assert (esize * nunits == GET_MODE_BITSIZE (mask_mode));
> + unsigned HOST_WIDE_INT vsize;
> + if (mask_mode == BLKmode)
> + vsize = vector_size * BITS_PER_UNIT;
> + else
> + vsize = GET_MODE_BITSIZE (mask_mode);
> +
> + unsigned HOST_WIDE_INT esize = vsize / nunits;
> + gcc_assert (esize * nunits == vsize);
>
> tree bool_type = build_nonstandard_boolean_type (esize);
>