On 07/24/2018 07:18 PM, Segher Boessenkool wrote:
This patch allows combine to combine two insns into two. This helps
in many cases, by reducing instruction path length, and also allowing
further combinations to happen. PR85160 is a typical example of code
that it can improve.
I cannot state
On Wed, 1 Aug 2018 at 11:40, Segher Boessenkool
wrote:
>
> On Wed, Aug 01, 2018 at 10:27:31AM +0200, Christophe Lyon wrote:
> > On Tue, 31 Jul 2018 at 15:57, Segher Boessenkool
> > wrote:
> > > On Tue, Jul 31, 2018 at 02:34:06PM +0200, Christophe Lyon wrote:
> > > > Since this was committed, I've
On Wed, Aug 01, 2018 at 10:27:31AM +0200, Christophe Lyon wrote:
> On Tue, 31 Jul 2018 at 15:57, Segher Boessenkool
> wrote:
> > On Tue, Jul 31, 2018 at 02:34:06PM +0200, Christophe Lyon wrote:
> > > Since this was committed, I've noticed regressions
> > > on aarch64:
> > > FAIL: gcc.dg/zero_bits_
On Tue, 31 Jul 2018 at 15:57, Segher Boessenkool
wrote:
>
> Hi Christophe,
>
> On Tue, Jul 31, 2018 at 02:34:06PM +0200, Christophe Lyon wrote:
> > Since this was committed, I've noticed regressions
> > on aarch64:
> > FAIL: gcc.dg/zero_bits_compound-1.c scan-assembler-not \\(and:
>
> This went fr
On 31/07/18 14:57, Segher Boessenkool wrote:
> Hi Christophe,
>
> On Tue, Jul 31, 2018 at 02:34:06PM +0200, Christophe Lyon wrote:
>> Since this was committed, I've noticed regressions
>> on aarch64:
>> FAIL: gcc.dg/zero_bits_compound-1.c scan-assembler-not \\(and:
>
> This went from
> an
On Tue, Jul 31, 2018 at 05:39:37AM -0700, H.J. Lu wrote:
> For
>
> ---
> #define N 16
> float f[N];
> double d[N];
> int n[N];
>
> __attribute__((noinline)) void
> f3 (void)
> {
> int i;
> for (i = 0; i < N; i++)
> d[i] = f[i];
> }
> ---
>
> r263067 improved -O3 -mavx2 -mtune=generic -m6
Hi Christophe,
On Tue, Jul 31, 2018 at 02:34:06PM +0200, Christophe Lyon wrote:
> Since this was committed, I've noticed regressions
> on aarch64:
> FAIL: gcc.dg/zero_bits_compound-1.c scan-assembler-not \\(and:
This went from
and w0, w0, 255
lsl w1, w0, 8
orr
Christophe Lyon writes:
> On Mon, 30 Jul 2018 at 18:09, Segher Boessenkool
> wrote:
>>
>> On Tue, Jul 24, 2018 at 05:18:41PM +, Segher Boessenkool wrote:
>> > This patch allows combine to combine two insns into two. This helps
>> > in many cases, by reducing instruction path length, and also
On Wed, Jul 25, 2018 at 1:28 AM, Richard Biener
wrote:
> On Tue, Jul 24, 2018 at 7:18 PM Segher Boessenkool
> wrote:
>>
>> This patch allows combine to combine two insns into two. This helps
>> in many cases, by reducing instruction path length, and also allowing
>> further combinations to happe
On Mon, 30 Jul 2018 at 18:09, Segher Boessenkool
wrote:
>
> On Tue, Jul 24, 2018 at 05:18:41PM +, Segher Boessenkool wrote:
> > This patch allows combine to combine two insns into two. This helps
> > in many cases, by reducing instruction path length, and also allowing
> > further combination
On Tue, Jul 24, 2018 at 05:18:41PM +, Segher Boessenkool wrote:
> This patch allows combine to combine two insns into two. This helps
> in many cases, by reducing instruction path length, and also allowing
> further combinations to happen. PR85160 is a typical example of code
> that it can im
On Wed, Jul 25, 2018 at 09:47:31AM -0400, David Malcolm wrote:
> > +/* Return whether X is just a single set, with the source
> > + a general_operand. */
> > +static bool
> > +is_just_move (rtx x)
> > +{
> > + if (INSN_P (x))
> > +x = PATTERN (x);
> > +
> > + return (GET_CODE (x) == SET &&
On Tue, 2018-07-24 at 17:18 +, Segher Boessenkool wrote:
> This patch allows combine to combine two insns into two. This helps
> in many cases, by reducing instruction path length, and also allowing
> further combinations to happen. PR85160 is a typical example of code
> that it can improve.
On Wed, Jul 25, 2018 at 11:50 AM Segher Boessenkool
wrote:
>
> On Wed, Jul 25, 2018 at 10:28:30AM +0200, Richard Biener wrote:
> > On Tue, Jul 24, 2018 at 7:18 PM Segher Boessenkool
> > wrote:
> > >
> > > This patch allows combine to combine two insns into two. This helps
> > > in many cases, by
On Wed, Jul 25, 2018 at 10:28:30AM +0200, Richard Biener wrote:
> On Tue, Jul 24, 2018 at 7:18 PM Segher Boessenkool
> wrote:
> >
> > This patch allows combine to combine two insns into two. This helps
> > in many cases, by reducing instruction path length, and also allowing
> > further combinati
On Tue, Jul 24, 2018 at 7:18 PM Segher Boessenkool
wrote:
>
> This patch allows combine to combine two insns into two. This helps
> in many cases, by reducing instruction path length, and also allowing
> further combinations to happen. PR85160 is a typical example of code
> that it can improve.
On 07/24/2018 11:18 AM, Segher Boessenkool wrote:
> This patch allows combine to combine two insns into two. This helps
> in many cases, by reducing instruction path length, and also allowing
> further combinations to happen. PR85160 is a typical example of code
> that it can improve.
>
> This p
This patch allows combine to combine two insns into two. This helps
in many cases, by reducing instruction path length, and also allowing
further combinations to happen. PR85160 is a typical example of code
that it can improve.
This patch does not allow such combinations if either of the origina
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