On November 29, 2018 1:25:02 PM GMT+01:00, Segher Boessenkool
wrote:
>This will only be fixed from GCC 9 on, if the compiler adopts it. The
>kernel wants to support ancient GCC, so it will need to have a
>workaround
>for older GCC versions anyway.
What about backporting it, like Richard says?
On Thu, Nov 29, 2018 at 08:46:34PM +0900, Masahiro Yamada wrote:
> But, I'd like to ask if x86 people want to keep this macros.s approach.
> Revert 77b0bf55bc675 right now
> assuming the compiler will eventually solve the issue?
Yap, considering how elegant the compiler solution is and how much
pr
Resend to gcc@gcc.gnu.org to avoid spam filter
> From: Michael Matz
> > Sent: 07 October 2018 16:53
> ...
> > I think the examples I saw from Boris were all indirect inlines:
> >
> > static inline void foo() { asm("large-looking-but-small-asm"); }
> > static void bar1() { ... foo() ... }
> >
On 10/7/18 1:06 PM, Nadav Amit wrote:
> at 9:46 AM, Richard Biener wrote:
>
>> On October 7, 2018 6:09:30 PM GMT+02:00, Nadav Amit wrote:
>>> at 2:18 AM, Borislav Petkov wrote:
>>>
Hi people,
this is an attempt to see whether gcc's inline asm heuristic when
estimating inline
On October 7, 2018 6:09:30 PM GMT+02:00, Nadav Amit wrote:
>at 2:18 AM, Borislav Petkov wrote:
>
>> Hi people,
>>
>> this is an attempt to see whether gcc's inline asm heuristic when
>> estimating inline asm statements' cost for better inlining can be
>> improved.
>>
>> AFAIU, the problematic a
Second try after being blocked by gcc mailing list:
at 9:09 AM, Nadav Amit mailto:na...@vmware.com>> wrote:
at 2:18 AM, Borislav Petkov mailto:b...@alien8.de>> wrote:
Hi people,
this is an attempt to see whether gcc's inline asm heuristic when
estimating inline asm statements' cost for better i
On Sun, Oct 07, 2018 at 08:22:28AM -0500, Segher Boessenkool wrote:
> GCC already estimates the *size* of inline asm, and this is required
> *for correctness*.
I didn't say it didn't - but the heuristic could use improving.
> So I guess the real issue is that the inline asm size estimate for x86
Hi people,
this is an attempt to see whether gcc's inline asm heuristic when
estimating inline asm statements' cost for better inlining can be
improved.
AFAIU, the problematic arises when one ends up using a lot of inline
asm statements in the kernel but due to the inline asm cost estimation
heur
