https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79216
Eric Botcazou changed:
What|Removed |Added
Resolution|--- |FIXED
Status|NEW
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79216
--- Comment #10 from H. Peter Anvin ---
It is not. I guess I'd like to modify the request to allow
__attribute__((scalar_storage_order())) to be specified for scalar *pointer*.
That would bring the 90% up to 99% at the very least; the inability
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79216
--- Comment #9 from Eric Botcazou ---
> I guess I'm confused why it would not be possible to specify the endianness
> of a scalar, or perhaps far more importantly a pointer to a scalar. Other
> than that, this feature seems to do 90% of what I w
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79216
--- Comment #8 from H. Peter Anvin ---
I guess I'm confused why it would not be possible to specify the endianness of
a scalar, or perhaps far more importantly a pointer to a scalar. Other than
that, this feature seems to do 90% of what I was as
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79216
--- Comment #7 from Eric Botcazou ---
> As in, I would expect that:
>
> struct foo __attribute__((scalar_storage_order("big-endian")))
> {
> uint32_t bar;
> } foo;
>
> uint32_t *baz = &foo.bar;
>
> ... would give an error on a littleendian
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79216
Eric Botcazou changed:
What|Removed |Added
Status|UNCONFIRMED |NEW
Last reconfirmed|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79216
Richard Biener changed:
What|Removed |Added
CC||ebotcazou at gcc dot gnu.org
--- Commen
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79216
--- Comment #4 from H. Peter Anvin ---
As in, I would expect that:
struct foo __attribute__((scalar_storage_order("big-endian")))
{
uint32_t bar;
} foo;
uint32_t *baz = &foo.bar;
... would give an error on a littleendian architecture and a
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79216
--- Comment #3 from H. Peter Anvin ---
It does indeed, I don't know why I missed it. The only thing that I really see
as a problem with it is that it doesn't allow the assignment of endianness to
scalar pointers, e.g.:
uint32_t __attribute__((s
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79216
--- Comment #2 from joseph at codesourcery dot com ---
Does the scalar_storage_order attribute added in GCC 6 help for at least
some of this?
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79216
--- Comment #1 from H. Peter Anvin ---
The idea being that assignments to/from such a data item would make the
compiler generate the appropriate byte-swapping instructions appropriate for
the architecture. If part of a packed structure, this wou
11 matches
Mail list logo
