Hi!
On 2023-04-12 1:18 p.m., Jakub Jelinek wrote:
> On Wed, Apr 12, 2023 at 01:05:14PM +0100, Pedro Alves wrote:
>>> I thought Ben has posted the details.
>>> In memory they look the same as 0 based arrays, but they often have
>>> different calling conventions (argument passing, returning), they
On 2023-04-06 12:03 p.m., Jakub Jelinek via Dwarf-discuss wrote:
> In GCC, one uses vector_size attribute to define such types, so say
> typedef int V __attribute__((vector_size (64)));
> where 64 is number of bytes the vector has (so for 4 byte int it is 16
> elements).
> I think Clang supports
On Wed, Apr 12, 2023 at 01:05:14PM +0100, Pedro Alves wrote:
> > I thought Ben has posted the details.
> > In memory they look the same as 0 based arrays, but they often have
> > different calling conventions (argument passing, returning), they support
> > various arithmetic operations on them, in
On 2023-04-06 1:03 p.m., Jakub Jelinek via Dwarf-discuss wrote:
> On Thu, Apr 06, 2023 at 07:52:32AM -0400, Ron Brender wrote:
>>> And we almost certainly want to allow vectors on DWARF expression stack;
>>
>> What is so special about vector types in this regard. What do you have
>> against
On 2023-04-06 12:03 p.m., Jakub Jelinek via Dwarf-discuss wrote:
>> define fixed-length vectors as special built-in types or is the goal to
>> support
>> arbitrary vector lengths?
>>
>> It might be good to maintain an upper limit on the size of a stack entry.
> I think it is better if consumers
I believe that all three points that you bring up here are correct and I
will fix them in V3 of my proposal.
On 4/6/23 03:44, Metzger, Markus T wrote:
Hello Ben,
This is version 2 of my vector types submission.
Differences from V1:
- Made the submission about vector types rather than
On 4/6/23 03:47, Metzger, Markus T wrote:
Hello Jakub, Ben,
On Wed, Apr 05, 2023 at 07:16:35PM -0700, Ben Woodard via Dwarf-discuss wrote:
To distinguish these vector types from regular C arrays, GCC's DWARF
describes a vector type as an array with the DW_AT_GNU_vector
attribute. Clang also
On 4/6/23 03:16, Jakub Jelinek wrote:
On Wed, Apr 05, 2023 at 07:16:35PM -0700, Ben Woodard via Dwarf-discuss wrote:
To distinguish these vector types from regular C arrays, GCC's DWARF
describes a vector type as an array with the DW_AT_GNU_vector
attribute. Clang also supports the GCC vector
On Thu, Apr 06, 2023 at 07:52:32AM -0400, Ron Brender wrote:
> Various thoughts...
>
> > Not sure if supporting dimensions in the way which is done
> > for arrays is needed (I believe vector types are always one-dimensional
> > indexed from 0).
>
> "always"? There are many element by element
Various thoughts...
> Not sure if supporting dimensions in the way which is done
> for arrays is needed (I believe vector types are always one-dimensional
> indexed from 0).
"always"? There are many element by element operations on multidimensional
arrays that might benefit
from use of vector
On Thu, Apr 06, 2023 at 10:47:02AM +, Metzger, Markus T wrote:
> >I don't think this is a good idea, we should go for
> >DW_TAG_vector_type
> >instead IMHO. DW_AT_GNU_vector used to be a good idea as an extension,
> >as mentioned the (generic) vector types are in many ways similar to arrays,
Hello Jakub, Ben,
>On Wed, Apr 05, 2023 at 07:16:35PM -0700, Ben Woodard via Dwarf-discuss wrote:
>> To distinguish these vector types from regular C arrays, GCC's DWARF
>> describes a vector type as an array with the DW_AT_GNU_vector
>> attribute. Clang also supports the GCC vector extensions,
Hello Ben,
>This is version 2 of my vector types submission.
>
>Differences from V1:
>- Made the submission about vector types rather than vector registers.
>- Substituted Pedro's much better introduction for my own with minor edits.
>- Removed the modifications to the DWARF Stack. The AMD
On Wed, Apr 05, 2023 at 07:16:35PM -0700, Ben Woodard via Dwarf-discuss wrote:
> To distinguish these vector types from regular C arrays, GCC's DWARF
> describes a vector type as an array with the DW_AT_GNU_vector
> attribute. Clang also supports the GCC vector extensions, and
> describes the
fstd.org
> Subject: [Dwarf-discuss] ISSUE: vector types. V2
>
> This is version 2 of my vector types submission.
>
> Differences from V1:
> - Made the submission about vector types rather than vector registers.
> - Substituted Pedro's much better introduction for my own with min
This is version 2 of my vector types submission.
Differences from V1:
- Made the submission about vector types rather than vector registers.
- Substituted Pedro's much better introduction for my own with minor edits.
- Removed the modifications to the DWARF Stack. The AMD people like
Pedro and
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