On Sat, Nov 15, 2014 at 06:59:23AM -0600, Segher Boessenkool wrote:
> On Fri, Nov 14, 2014 at 08:35:48PM +0100, Bernd Schmidt wrote:
> > On 11/14/2014 08:19 PM, Segher Boessenkool wrote:
> > >+ /* If I2 is a PARALLEL of two SETs of REGs (and perhaps some CLOBBERs),
> > >+ make those two SETs s
On Tue, Nov 25, 2014 at 11:35:14AM -0700, Jeff Law wrote:
> On 11/14/14 12:19, Segher Boessenkool wrote:
> >If I2 is a PARALLEL of two SETs, split it into two instructions, I1
> >and I2. If there already was an I1, rename it to I0. If there
> >already was an I0, don't do anything.
> >
> >This sur
On 11/14/14 12:19, Segher Boessenkool wrote:
If I2 is a PARALLEL of two SETs, split it into two instructions, I1
and I2. If there already was an I1, rename it to I0. If there
already was an I0, don't do anything.
This surprisingly simple patch is enough to let combine handle such
PARALLELs pro
On Fri, Nov 14, 2014 at 08:35:48PM +0100, Bernd Schmidt wrote:
> On 11/14/2014 08:19 PM, Segher Boessenkool wrote:
> >+ /* If I2 is a PARALLEL of two SETs of REGs (and perhaps some CLOBBERs),
> >+ make those two SETs separate I1 and I2 insns, and make an I0 that is
> >+ the original I1. *
On 11/14/2014 08:19 PM, Segher Boessenkool wrote:
+ /* If I2 is a PARALLEL of two SETs of REGs (and perhaps some CLOBBERs),
+ make those two SETs separate I1 and I2 insns, and make an I0 that is
+ the original I1. */
+ if (i0 == 0
+ && GET_CODE (PATTERN (i2)) == PARALLEL
+ &&
If I2 is a PARALLEL of two SETs, split it into two instructions, I1
and I2. If there already was an I1, rename it to I0. If there
already was an I0, don't do anything.
This surprisingly simple patch is enough to let combine handle such
PARALLELs properly.
2014-11-14 Segher Boessenkool
gcc/
