On Sun, Dec 17, 2017 at 03:14:08AM +, Segher Boessenkool wrote:
> Hi!
>
> On Mon, Dec 11, 2017 at 02:18:53PM +, James Greenhalgh wrote:
> >
> > In simplify_set we try transforming the paradoxical subreg expression:
> >
> > (set FOO (subreg:M (mem:N BAR) 0))
> >
> > in to:
> >
> > (set
Hi!
On Mon, Dec 11, 2017 at 02:18:53PM +, James Greenhalgh wrote:
>
> In simplify_set we try transforming the paradoxical subreg expression:
>
> (set FOO (subreg:M (mem:N BAR) 0))
>
> in to:
>
> (set FOO (zero_extend:M (mem:N BAR)))
>
> However, this code does not consider the case wh
I was happily going to close PR 55549, but it looks like we are trying the
same transformation in a second place in that file :-(
On Mon, 11 Dec 2017, James Greenhalgh wrote:
Hi,
In simplify_set we try transforming the paradoxical subreg expression:
(set FOO (subreg:M (mem:N BAR) 0))
in to
On 12/11/2017 07:18 AM, James Greenhalgh wrote:
>
> Hi,
>
> In simplify_set we try transforming the paradoxical subreg expression:
>
> (set FOO (subreg:M (mem:N BAR) 0))
>
> in to:
>
> (set FOO (zero_extend:M (mem:N BAR)))
>
> However, this code does not consider the case where M is a vec
Hi,
In simplify_set we try transforming the paradoxical subreg expression:
(set FOO (subreg:M (mem:N BAR) 0))
in to:
(set FOO (zero_extend:M (mem:N BAR)))
However, this code does not consider the case where M is a vector
mode, allowing it to construct (for example):
(zero_extend:V4SI (
