On Wed, 1 Feb 2017, Nathan Sidwell wrote:
> On 02/01/2017 10:18 AM, Richard Biener wrote:
>
> > True. Updated patch below.
> >
> > Richard.
> >
> > 2017-02-01 Richard Biener
> >
> > PR cp/14179
> > cp/
> > * cp-gimplify.c (cp_fold): When folding a CONSTRUCTOR copy
> > it la
On 02/01/2017 10:18 AM, Richard Biener wrote:
True. Updated patch below.
Richard.
2017-02-01 Richard Biener
PR cp/14179
cp/
* cp-gimplify.c (cp_fold): When folding a CONSTRUCTOR copy
it lazily on the first changed element only and copy it
fully upfr
On Wed, Feb 01, 2017 at 04:18:49PM +0100, Richard Biener wrote:
> 2017-02-01 Richard Biener
>
> PR cp/14179
> cp/
> * cp-gimplify.c (cp_fold): When folding a CONSTRUCTOR copy
> it lazily on the first changed element only and copy it
> fully upfront, only storing ch
On Wed, 1 Feb 2017, Nathan Sidwell wrote:
> On 02/01/2017 09:03 AM, Richard Biener wrote:
> >
> > Currently we copy CONSTRUCTORs we cp_fold even if no elements fold
> > (we throw the copy away then). That's wasteful and we can easily
> > do the copying on-demand. For simplicity the following re
On 02/01/2017 09:03 AM, Richard Biener wrote:
Currently we copy CONSTRUCTORs we cp_fold even if no elements fold
(we throw the copy away then). That's wasteful and we can easily
do the copying on-demand. For simplicity the following resorts
to memcpy-ing the whole original vector on the first
On Wed, 1 Feb 2017, Jakub Jelinek wrote:
> On Wed, Feb 01, 2017 at 03:35:49PM +0100, Richard Biener wrote:
> > > > changed = false;
> > > > break;
> > > > }
> > > > - changed = true;
> > > > + if (! changed)
> >
On Wed, Feb 01, 2017 at 03:35:49PM +0100, Richard Biener wrote:
> > > changed = false;
> > > break;
> > > }
> > > - changed = true;
> > > + if (! changed)
> > > + {
> > > + nelts = elts->copy ();
> >
> > Isn't the above
On Wed, 1 Feb 2017, Jakub Jelinek wrote:
> On Wed, Feb 01, 2017 at 03:03:15PM +0100, Richard Biener wrote:
> > 2017-02-01 Richard Biener
> >
> > PR cp/14179
> > cp/
> > * cp-gimplify.c (cp_fold): When folding a CONSTRUCTOR copy
> > it lazily on the first changed element only an
On Wed, Feb 01, 2017 at 03:03:15PM +0100, Richard Biener wrote:
> 2017-02-01 Richard Biener
>
> PR cp/14179
> cp/
> * cp-gimplify.c (cp_fold): When folding a CONSTRUCTOR copy
> it lazily on the first changed element only and copy it
> fully upfront, only storing ch
Currently we copy CONSTRUCTORs we cp_fold even if no elements fold
(we throw the copy away then). That's wasteful and we can easily
do the copying on-demand. For simplicity the following resorts
to memcpy-ing the whole original vector on the first change
and only overwrites changed elements in t
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