>> It shouldn't be too hard to add the support. I suspect the person who did
>> the
>> initial support may have been on a machine without vector shifts.
>
> Nope, because it was originally done by Aldy who did the VMX support
> which had vector shifts.
OTOH the support for vector lowering was w
On Tue, Feb 24, 2009 at 2:01 PM, Michael Meissner
wrote:
> On Tue, Feb 24, 2009 at 01:19:44PM -0800, Bingfeng Mei wrote:
>> Yes, I am aware of both types of vector shift. Our target VLIW
>> actually supports both and I have implemented all related patterns
>> in our porting. But it would be still
On Tue, Feb 24, 2009 at 01:19:44PM -0800, Bingfeng Mei wrote:
> Yes, I am aware of both types of vector shift. Our target VLIW
> actually supports both and I have implemented all related patterns
> in our porting. But it would be still nice to allow programmer
> explicitly use vector shift, prefer
; From: Michael Meissner [mailto:meiss...@linux.vnet.ibm.com]
> Sent: 24 February 2009 21:07
> To: Bingfeng Mei
> Cc: gcc@gcc.gnu.org
> Subject: Re: Native support for vector shift
>
> On Tue, Feb 24, 2009 at 06:15:37AM -0800, Bingfeng Mei wrote:
> > Hello,
> > For the
On Tue, Feb 24, 2009 at 06:15:37AM -0800, Bingfeng Mei wrote:
> Hello,
> For the targets that support vectors, we can write the following code:
>
> typedef shortV4H __attribute__ ((vector_size (8)));
>
> V4H tst(V4H a, V4H b){
> return a + b;
> }
>
> Other operators such as -, *, |, &, ^
;
short b;
c = a + b;
Instead of using
c = a + (V4H){b, b, b, b};
This can be useful.
> -Original Message-
> From: Joseph Myers [mailto:jos...@codesourcery.com]
> Sent: 24 February 2009 18:52
> To: Bingfeng Mei
> Cc: gcc@gcc.gnu.org
> Subject: Re: Native support for ve
On Tue, 24 Feb 2009, Bingfeng Mei wrote:
> Currently, we have to use intrinsics to support such shift. Isn't syntax
> of vector shift intuitive enough to be supported natively? Someone may
> argue it breaks the C language. But vector is a GCC extension anyway.
> Support for vector add/sub/etc a
> Currently, we have to use intrinsics to support such shift. Isn't syntax of
> vector
> shift intuitive enough to be supported natively? Someone may argue it breaks
> the
> C language. But vector is a GCC extension anyway. Support for vector
> add/sub/etc
> already break C syntax. Any thought?
