On Tue, Oct 4, 2016 at 2:50 AM, Richard Biener wrote:
> On Tue, 4 Oct 2016, Marc Glisse wrote:
>
>> On Tue, 4 Oct 2016, Richard Biener wrote:
>>
>> > Possibly. Though then for FP we also want - abs (a) -> copysign (a, -1).
>>
>> I thought this might fix PR 62055, but at least on x86_64, we genera
On Wed, 5 Oct 2016, Richard Biener wrote:
> On Tue, 4 Oct 2016, Joseph Myers wrote:
>
> > On Tue, 4 Oct 2016, Richard Biener wrote:
> >
> > > On Tue, 4 Oct 2016, Joseph Myers wrote:
> > >
> > > > On Tue, 4 Oct 2016, Richard Biener wrote:
> > > >
> > > > > Possibly. Though then for FP we also
On Tue, 4 Oct 2016, Joseph Myers wrote:
> On Tue, 4 Oct 2016, Richard Biener wrote:
>
> > On Tue, 4 Oct 2016, Joseph Myers wrote:
> >
> > > On Tue, 4 Oct 2016, Richard Biener wrote:
> > >
> > > > Possibly. Though then for FP we also want - abs (a) -> copysign (a,
> > > > -1).
> > >
> > > For
On Tue, 4 Oct 2016, Richard Biener wrote:
> On Tue, 4 Oct 2016, Joseph Myers wrote:
>
> > On Tue, 4 Oct 2016, Richard Biener wrote:
> >
> > > Possibly. Though then for FP we also want - abs (a) -> copysign (a, -1).
> >
> > For architectures such as powerpc that have a negated-abs instruction,
On Tue, 4 Oct 2016, Joseph Myers wrote:
> On Tue, 4 Oct 2016, Richard Biener wrote:
>
> > Possibly. Though then for FP we also want - abs (a) -> copysign (a, -1).
>
> For architectures such as powerpc that have a negated-abs instruction,
> does it get properly generated from the copysign code?
On Tue, 4 Oct 2016, Richard Biener wrote:
> Possibly. Though then for FP we also want - abs (a) -> copysign (a, -1).
For architectures such as powerpc that have a negated-abs instruction,
does it get properly generated from the copysign code? (The relevant
pattern in rs6000.md uses (neg (abs)
On Tue, 4 Oct 2016, Marc Glisse wrote:
> On Tue, 4 Oct 2016, Richard Biener wrote:
>
> > Possibly. Though then for FP we also want - abs (a) -> copysign (a, -1).
>
> I thought this might fix PR 62055, but at least on x86_64, we generate much
> worse code for copysign(,-1) than for -abs :-(
I w
On Tue, 4 Oct 2016, Richard Biener wrote:
Possibly. Though then for FP we also want - abs (a) -> copysign (a, -1).
I thought this might fix PR 62055, but at least on x86_64, we generate
much worse code for copysign(,-1) than for -abs :-(
--
Marc Glisse
On Fri, 30 Sep 2016, Andrew Pinski wrote:
> On Thu, Sep 29, 2016 at 8:23 PM, Richard Biener wrote:
> > On Thu, 29 Sep 2016, Richard Biener wrote:
> >
> >> On Wed, 28 Sep 2016, Joseph Myers wrote:
> >>
> >> > On Wed, 28 Sep 2016, Richard Biener wrote:
> >> >
> >> > > Index: gcc/testsuite/gcc.dg/pr
On Thu, Sep 29, 2016 at 8:23 PM, Richard Biener wrote:
> On Thu, 29 Sep 2016, Richard Biener wrote:
>
>> On Wed, 28 Sep 2016, Joseph Myers wrote:
>>
>> > On Wed, 28 Sep 2016, Richard Biener wrote:
>> >
>> > > Index: gcc/testsuite/gcc.dg/pr55152.c
>> > >
On Thu, 29 Sep 2016, Richard Biener wrote:
> On Wed, 28 Sep 2016, Joseph Myers wrote:
>
> > On Wed, 28 Sep 2016, Richard Biener wrote:
> >
> > > Index: gcc/testsuite/gcc.dg/pr55152.c
> > > ===
> > > --- gcc/testsuite/gcc.dg/pr55152.
On Wed, 28 Sep 2016, Joseph Myers wrote:
> On Wed, 28 Sep 2016, Richard Biener wrote:
>
> > Index: gcc/testsuite/gcc.dg/pr55152.c
> > ===
> > --- gcc/testsuite/gcc.dg/pr55152.c (revision 0)
> > +++ gcc/testsuite/gcc.dg/pr55152.c (w
On Wed, 28 Sep 2016, Richard Biener wrote:
> Index: gcc/testsuite/gcc.dg/pr55152.c
> ===
> --- gcc/testsuite/gcc.dg/pr55152.c(revision 0)
> +++ gcc/testsuite/gcc.dg/pr55152.c(working copy)
> @@ -0,0 +1,13 @@
> +/* { dg-do comp
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