On Mon, Mar 9, 2015 at 8:26 PM, Robbert Krebbers
wrote:
> I was wondering whether GCC uses 6.5.16.1p3 of the C11 standard as a license
> to perform certain optimizations. If so, could anyone provide me an example
> program.
>
> In particular, I am interested about the "then the overlap shall be ex
Dear Richard,
On 03/10/2015 09:51 AM, Richard Biener wrote:
struct X { int i; int j; };
int foo (struct X *p, struct X *q)
{
q->j = 1;
p->i = 0;
return q->j;
}
will optimize to return 1. If *p and *q were allowed to overlap
(&p->i == &q->j)
this would invoke undefined behavior.
Than
On Mon, Mar 9, 2015 at 11:59 PM, Steven Bosscher wrote:
> On Mon, Mar 9, 2015 at 7:59 PM, vax mzn wrote:
>> w.r.t, https://gcc.gnu.org/wiki/Speedup_areas where we want to improve the
>> performance of splay trees.
>>
>> The function `splay_tree_node splay_tree_lookup (splay_tree,
>> splay_tree_k
On Tue, Mar 10, 2015 at 10:11 AM, Robbert Krebbers
wrote:
> Dear Richard,
>
> On 03/10/2015 09:51 AM, Richard Biener wrote:
>>
>> struct X { int i; int j; };
>>
>> int foo (struct X *p, struct X *q)
>> {
>>q->j = 1;
>>p->i = 0;
>>return q->j;
>> }
>>
>> will optimize to return 1. If *
Hi,
I'm still working on a private backend on gcc 4.9.2. My processor provides
instructions with 2 delay slots. I'm well aware that this feature is very
uncommon and not fully tested. Nevertheless I submit the problem and the
solution I've found.
The bug is located in the function try_merge_de
Me again :)
I enhanced my patch because it was not generalized for instructions with N
delay_slots.
Selim
try_merge_patch2
Description: try_merge_patch2
Hi fellow developers,
I'm happy to inform you that the move of Newlib/Cygwin from the src CVS
repository to the new, combined GIT repository is now final.
Here's how to access the new GIT repository:
Read-only:
git clone git://sourceware.org/git/newlib-cygwin.git
Read/Write:
git clone
On 03/09/2015 01:26 PM, Robbert Krebbers wrote:
I was wondering whether GCC uses 6.5.16.1p3 of the C11 standard as a
license to perform certain optimizations. If so, could anyone provide me
an example program.
In particular, I am interested about the "then the overlap shall be
exact" part of 6.5
Thank you for doing this! It cloned for me on the first try.
Any particular reason, the repo is called newlib-cygwin.git
and not the more general newlib.git. Cygwin isn't the
only user of newlib.
--joel
On 3/10/2015 10:38 AM, Corinna Vinschen wrote:
> Hi fellow developers,
>
>
> I'm happy to inf
On 03/10/2015 05:18 PM, Martin Sebor wrote:
I suspect every compiler relies on this requirement in certain
cases otherwise copying would require making use of temporary
storage. Here's an example:
Thanks, this example is indeed not already undefined by effective types,
nor 6.2.6.1p6.
An entire
On 03/10/2015 05:44 PM, Robbert Krebbers wrote:
On 03/10/2015 05:18 PM, Martin Sebor wrote:
I suspect every compiler relies on this requirement in certain
cases otherwise copying would require making use of temporary
storage. Here's an example:
Thanks, this example is indeed not already undefin
Hi Jakub,
I have one more question :)
This testcase seems to be correct... or not?
#pragma omp declare target
extern int G;
#pragma omp end declare target
int G;
int main ()
{
#pragma omp target update to(G)
return 0;
}
If yes, then we have a problem that the decl of G in varpool_node::ge
On Tue, 10 Mar 2015, Corinna Vinschen wrote:
> Hi fellow developers,
>
>
> I'm happy to inform you that the move of Newlib/Cygwin from the src CVS
> repository to the new, combined GIT repository is now final.
I note that this repository includes the include/ directory, in its larger
binutils-
On Mar 10 11:20, Joel Sherrill wrote:
> Thank you for doing this! It cloned for me on the first try.
>
> Any particular reason, the repo is called newlib-cygwin.git
> and not the more general newlib.git. Cygwin isn't the
> only user of newlib.
No, but Cygwin is part of the repo. It's a *combined
> This is a common problem. I guess newlib/cygwin got the oldest set
> and, afaik, the GCC toplevel stuff is kind of the master. It would
> be nice if we had some automatism in place to keep all former src
> repos in sync.
There was never any agreement on who the "master" was for toplevel
sourc
I am trying to track down a bug that I only see on Fedora 21 with the
GCC 4.9.2 compiler building x86_64 code. It might have started happening
earlier. GCC 4.8 built without this problem.
I am building the c-ares library as part of a larger project and getting
malloc failures. Valgrind claims tha
On Tue, 10 Mar 2015, Robbert Krebbers wrote:
> On 03/10/2015 05:44 PM, Robbert Krebbers wrote:
> > On 03/10/2015 05:18 PM, Martin Sebor wrote:
> > > I suspect every compiler relies on this requirement in certain
> > > cases otherwise copying would require making use of temporary
> > > storage. Her
This email is a follow-up to some earlier email I sent about
alignment of spills and fills but did not get any replies to.
https://gcc.gnu.org/ml/gcc/2015-03/msg00028.html
After looking into that I have decided to look more into dynamically
realigning the stack so that my spills and fills
18 matches
Mail list logo
