Re: vector_size attribute?

[Randy Dunlap <rdunlap@xenotime.net>]

On Tue, 31 May 2011 04:22:37 -0700 Christopher Li wrote:

> On Sun, May 29, 2011 at 9:26 AM, Avi Kivity <avi@redhat.com> wrote:
> > On 05/29/2011 06:57 PM, Randy Dunlap wrote:
> >> typedef u32 __attribute__((vector_size(16))) sse128_t;
> >
> > I guess sparse should be taught about it.  It's needed so that gcc asm
> > constraints are aware of what memory is touched when running an sse
> > instruction.
> >
> > (probably ignoring it for now should be sufficient)
> 
> I just submit a change to ignore that attribute. Works fine with
> the trivial test case.

Works on kernel source tree also (of course).  Thanks.


> Chris
> 
> commit d8b20ec2324b09b164b298fbab6b4265b6886929
> Author: Christopher Li <sparse@chrisli.org>
> Date:   Tue May 31 04:05:37 2011 -0700
> 
>     Ignore attribute vector_size
> 
>     Report by Randy Dunlap, attribute vector_size is causing
>     error. Ignore it for now.
> 
>     Signed-off-by: Christopher Li <sparse@chrisli.org>
> 
> diff --git a/parse.c b/parse.c
> index 9e79ef0..57f369b 100644
> --- a/parse.c
> +++ b/parse.c
> @@ -563,6 +563,7 @@ const char *ignored_attributes[] = {
>         "__unused__",
>         "used",
>         "__used__",
> +       "vector_size",
>         "visibility",
>         "__visibility__",
>         "warn_unused_result",
> diff --git a/validation/attr_vector_size.c b/validation/attr_vector_size.c
> new file mode 100644
> index 0000000..6982922
> --- /dev/null
> +++ b/validation/attr_vector_size.c
> @@ -0,0 +1,7 @@
> +typedef unsigned int u32;
> +typedef u32 __attribute__((vector_size(16))) sse128_t;
> +
> +/*
> + * check-name: attribute vector_size
> + */
> +


---
~Randy
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