On Fri, 27 Jul 2018, Richard Earnshaw (lists) wrote:
> The c-c++-common/spec-barrier-1.c test will fail on any target that has
> not been updated (it deliberately doesn't check for
> __HAVE_SPECULATION_BARRIER before trying to use the new intrinsic). The
> test contains a comment to that effect.
On 27/07/18 01:46, Paul Koning wrote:
>
>
>> On Jul 26, 2018, at 7:34 PM, Joseph Myers wrote:
>>
>> On Wed, 25 Jul 2018, Richard Earnshaw (lists) wrote:
>>
> Port maintainers DO need to decide what to do about speculation, even if
> it is explicitly that no mitigation is needed.
> On Jul 26, 2018, at 7:34 PM, Joseph Myers wrote:
>
> On Wed, 25 Jul 2018, Richard Earnshaw (lists) wrote:
>
Port maintainers DO need to decide what to do about speculation, even if
it is explicitly that no mitigation is needed.
>>>
>>> Agreed. But I didn't yet see a request for
On Wed, 25 Jul 2018, Richard Earnshaw (lists) wrote:
> >> Port maintainers DO need to decide what to do about speculation, even if
> >> it is explicitly that no mitigation is needed.
> >
> > Agreed. But I didn't yet see a request for maintainers to decide that?
> >
>
> consider it made, then
On Thu, Jul 26, 2018 at 3:06 PM Richard Earnshaw (lists)
wrote:
>
> On 26/07/18 13:41, Richard Biener wrote:
> > On Thu, Jul 26, 2018 at 12:03 PM Richard Earnshaw (lists)
> > wrote:
> >>
> >> On 25/07/18 14:47, Richard Biener wrote:
> >>> On Wed, Jul 25, 2018 at 2:41 PM Richard Earnshaw (lists)
On 26/07/18 13:41, Richard Biener wrote:
> On Thu, Jul 26, 2018 at 12:03 PM Richard Earnshaw (lists)
> wrote:
>>
>> On 25/07/18 14:47, Richard Biener wrote:
>>> On Wed, Jul 25, 2018 at 2:41 PM Richard Earnshaw (lists)
>>> wrote:
On 25/07/18 11:36, Richard Biener wrote:
> On Wed,
On Thu, Jul 26, 2018 at 12:03 PM Richard Earnshaw (lists)
wrote:
>
> On 25/07/18 14:47, Richard Biener wrote:
> > On Wed, Jul 25, 2018 at 2:41 PM Richard Earnshaw (lists)
> > wrote:
> >>
> >> On 25/07/18 11:36, Richard Biener wrote:
> >>> On Wed, Jul 25, 2018 at 11:49 AM Richard Earnshaw (lists)
On 25/07/18 14:47, Richard Biener wrote:
> On Wed, Jul 25, 2018 at 2:41 PM Richard Earnshaw (lists)
> wrote:
>>
>> On 25/07/18 11:36, Richard Biener wrote:
>>> On Wed, Jul 25, 2018 at 11:49 AM Richard Earnshaw (lists)
>>> wrote:
On 24/07/18 18:26, Richard Biener wrote:
> On Mon,
On Wed, Jul 25, 2018 at 8:03 PM Richard Earnshaw (lists)
wrote:
>
> On 24/07/18 18:26, Richard Biener wrote:
> > So, please make resolve_overloaded_builtin return a no-op on such targets
> > which means you can remove the above warning. Maybe such targets
> > shouldn't advertise / initialize the
On 24/07/18 18:26, Richard Biener wrote:
> So, please make resolve_overloaded_builtin return a no-op on such targets
> which means you can remove the above warning. Maybe such targets
> shouldn't advertise / initialize the builtins at all?
So I tried to make resolve_overloaded_builtin collapse
On Wed, Jul 25, 2018 at 2:41 PM Richard Earnshaw (lists)
wrote:
>
> On 25/07/18 11:36, Richard Biener wrote:
> > On Wed, Jul 25, 2018 at 11:49 AM Richard Earnshaw (lists)
> > wrote:
> >>
> >> On 24/07/18 18:26, Richard Biener wrote:
> >>> On Mon, Jul 9, 2018 at 6:40 PM Richard Earnshaw
> >>>
On 25/07/18 11:36, Richard Biener wrote:
> On Wed, Jul 25, 2018 at 11:49 AM Richard Earnshaw (lists)
> wrote:
>>
>> On 24/07/18 18:26, Richard Biener wrote:
>>> On Mon, Jul 9, 2018 at 6:40 PM Richard Earnshaw
>>> wrote:
This patch defines a new intrinsic function
On Wed, Jul 25, 2018 at 11:49 AM Richard Earnshaw (lists)
wrote:
>
> On 24/07/18 18:26, Richard Biener wrote:
> > On Mon, Jul 9, 2018 at 6:40 PM Richard Earnshaw
> > wrote:
> >>
> >>
> >> This patch defines a new intrinsic function
> >> __builtin_speculation_safe_value. A generic default
On 24/07/18 18:26, Richard Biener wrote:
> On Mon, Jul 9, 2018 at 6:40 PM Richard Earnshaw
> wrote:
>>
>>
>> This patch defines a new intrinsic function
>> __builtin_speculation_safe_value. A generic default implementation is
>> defined which will attempt to use the backend pattern
>>
On Mon, Jul 9, 2018 at 6:40 PM Richard Earnshaw
wrote:
>
>
> This patch defines a new intrinsic function
> __builtin_speculation_safe_value. A generic default implementation is
> defined which will attempt to use the backend pattern
> "speculation_safe_barrier". If this pattern is not defined,
Ping.
This patch needs reviewing an appropriate maintainer.
I'm aware that the documentation needs extending a bit to provide some
example use cases as discussed in the follow-up to the generic
discussion, but the rest of the patch still stands.
R.
On 09/07/18 17:38, Richard Earnshaw wrote:
>
This patch defines a new intrinsic function
__builtin_speculation_safe_value. A generic default implementation is
defined which will attempt to use the backend pattern
"speculation_safe_barrier". If this pattern is not defined, or if it
is not available, then the compiler will emit a warning,
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