Hello.
Many significant changes has landed in mainline and will be released as GCC 8.1.
I decided to use various GCC configs we have and test how there configuration
differ
in size and also binary size.
This is first part where I measured binary size, speed comparison will follow.
Configuration
On Tue, Mar 6, 2018 at 11:12 AM, Martin Liška wrote:
> Hello.
>
> Many significant changes has landed in mainline and will be released as GCC
> 8.1.
> I decided to use various GCC configs we have and test how there configuration
> differ
> in size and also binary size.
>
> This is first part whe
Hi,
For the following test-case,
int a;
__attribute__((noinline))
static void foo()
{
a = 3;
}
int main()
{
a = 4;
foo ();
return a;
}
I assume it's safe to remove "a = 4" since 'a' would be overwritten
by call to foo ?
IIUC, ipa-reference pass does mod/ref analysis to compute side-eff
Hi,
Thank you Richard and Honza for the suggestions. If I understand correctly,
the issue is that LTO file format keeps changing per compiler versions, so
we need a more “stable” representation and the first step for that would be
to “stabilize” representations for lto-cgraph and symbol table ? Co
On Tue, Mar 6, 2018 at 1:00 PM, Prathamesh Kulkarni
wrote:
> Hi,
> For the following test-case,
>
> int a;
>
> __attribute__((noinline))
> static void foo()
> {
> a = 3;
> }
>
> int main()
> {
> a = 4;
> foo ();
> return a;
> }
>
> I assume it's safe to remove "a = 4" since 'a' would be o
On Tue, Mar 6, 2018 at 2:30 PM, Hrishikesh Kulkarni
wrote:
> Hi,
>
> Thank you Richard and Honza for the suggestions. If I understand correctly,
> the issue is that LTO file format keeps changing per compiler versions, so
> we need a more “stable” representation and the first step for that would b
> On Tue, Mar 6, 2018 at 2:30 PM, Hrishikesh Kulkarni
> wrote:
> > Hi,
> >
> > Thank you Richard and Honza for the suggestions. If I understand correctly,
> > the issue is that LTO file format keeps changing per compiler versions, so
> > we need a more “stable” representation and the first step fo
> On Tue, Mar 6, 2018 at 11:12 AM, Martin Liška wrote:
> > Hello.
> >
> > Many significant changes has landed in mainline and will be released as GCC
> > 8.1.
> > I decided to use various GCC configs we have and test how there
> > configuration differ
> > in size and also binary size.
> >
> > Th
> On Tue, Mar 6, 2018 at 2:30 PM, Hrishikesh Kulkarni
> wrote:
> > Hi,
> >
> > Thank you Richard and Honza for the suggestions. If I understand correctly,
> > the issue is that LTO file format keeps changing per compiler versions, so
> > we need a more “stable” representation and the first step fo
On Tue, Mar 6, 2018 at 4:02 PM, Jan Hubicka wrote:
>> On Tue, Mar 6, 2018 at 2:30 PM, Hrishikesh Kulkarni
>> wrote:
>> > Hi,
>> >
>> > Thank you Richard and Honza for the suggestions. If I understand correctly,
>> > the issue is that LTO file format keeps changing per compiler versions, so
>> > w
On Tue, 2018-03-06 at 11:14 +0100, Martin Liška wrote:
> Hello.
>
> Many significant changes has landed in mainline and will be released
> as GCC 8.1.
> I decided to use various GCC configs we have and test how there
> configuration differ
> in size and also binary size.
>
> This is first part wh
Hi all,
The problem described here probably only affects targets whose ABI allow to
pass structured
arguments of certain size via registers.
If the mode of the parameter type is BLKmode, in the callee, during RTL
expanding,
a stack slot will be reserved for this parameter, and the incoming val
> On Tue, Mar 6, 2018 at 4:02 PM, Jan Hubicka wrote:
> >> On Tue, Mar 6, 2018 at 2:30 PM, Hrishikesh Kulkarni
> >> wrote:
> >> > Hi,
> >> >
> >> > Thank you Richard and Honza for the suggestions. If I understand
> >> > correctly,
> >> > the issue is that LTO file format keeps changing per compil
On Tue, Mar 6, 2018 at 2:28 PM, Richard Biener
wrote:
> On Tue, Mar 6, 2018 at 1:00 PM, Prathamesh Kulkarni
> wrote:
>> Hi,
>> For the following test-case,
>>
>> int a;
>>
>> __attribute__((noinline))
>> static void foo()
>> {
>> a = 3;
>> }
>>
>> int main()
>> {
>> a = 4;
>> foo ();
>> r
On Tue, Mar 6, 2018 at 4:21 PM, Renlin Li wrote:
> Hi all,
>
> The problem described here probably only affects targets whose ABI allow to
> pass structured
> arguments of certain size via registers.
>
> If the mode of the parameter type is BLKmode, in the callee, during RTL
> expanding,
> a stack
On Tue, Mar 6, 2018 at 4:50 PM, Bin.Cheng wrote:
> On Tue, Mar 6, 2018 at 2:28 PM, Richard Biener
> wrote:
>> On Tue, Mar 6, 2018 at 1:00 PM, Prathamesh Kulkarni
>> wrote:
>>> Hi,
>>> For the following test-case,
>>>
>>> int a;
>>>
>>> __attribute__((noinline))
>>> static void foo()
>>> {
>>>
On 03/06/2018 04:13 PM, David Malcolm wrote:
On Tue, 2018-03-06 at 11:14 +0100, Martin Liška wrote:
Hello.
Many significant changes has landed in mainline and will be released
as GCC 8.1.
I decided to use various GCC configs we have and test how there
configuration differ
in size and also binar
On 3/5/18 9:33 AM, Segher Boessenkool wrote:
> On Mon, Mar 05, 2018 at 08:01:14AM +0100, Eric Botcazou wrote:
>> Apparently the authors of the SPARC psABI thought that the last part of your
>> sentence is an interpolation and that the (historical) requirements were
>> vague
>> enough to allow th
Hi Bin,
On Tue, Mar 06 2018, Bin Cheng wrote:
> On Tue, Mar 6, 2018 at 2:28 PM, Richard Biener
>>
>> Do you think the situation happens often enough to make this worthwhile?
> There is one probably more useful case. Program may use global flags
> controlling
> how it does (heavy) computation. Su
On 03/06/2018 09:28 AM, Richard Biener wrote:
> On Tue, Mar 6, 2018 at 1:00 PM, Prathamesh Kulkarni
> wrote:
>> Hi,
>> For the following test-case,
>>
>> int a;
>>
>> __attribute__((noinline))
>> static void foo()
>> {
>> a = 3;
>> }
>>
>> int main()
>> {
>> a = 4;
>> foo ();
>> return a;
On Tue, Mar 6, 2018 at 4:44 PM, Martin Jambor wrote:
> Hi Bin,
>
> On Tue, Mar 06 2018, Bin Cheng wrote:
>> On Tue, Mar 6, 2018 at 2:28 PM, Richard Biener
>>>
>>> Do you think the situation happens often enough to make this worthwhile?
>> There is one probably more useful case. Program may use gl
On Tue, Mar 6, 2018 at 4:50 PM, Bin.Cheng wrote:
> On Tue, Mar 6, 2018 at 4:44 PM, Martin Jambor wrote:
>> Hi Bin,
>>
>> On Tue, Mar 06 2018, Bin Cheng wrote:
>>> On Tue, Mar 6, 2018 at 2:28 PM, Richard Biener
Do you think the situation happens often enough to make this worthwhile?
>>>
Hi.
This is speed comparison of GCC 8 builds compared to my system GCC 7.3.0
which is built with PGO bootstrap.
I run empty C and C++ source file, tramp3d and the rest are some big beasts
from GCC source file. Feel free to suggest another test candidates? Note
that first column defines how many
On Tue, Mar 6, 2018 at 5:50 PM, Martin Liška wrote:
> Hi.
>
> This is speed comparison of GCC 8 builds compared to my system GCC 7.3.0
> which is built with PGO bootstrap.
>
> I run empty C and C++ source file, tramp3d and the rest are some big beasts
> from GCC source file. Feel free to suggest a
On 03/06/2018 05:18 PM, Martin Liška wrote:
Yes, in bytes. Would be nicer to have it in MB ;) It would be easily
readable. I'll fix that.
Hi.
I'm sending updated binary size statistics for both cc1 and cc1plus
in MB.
Martin
gcc-8-build-stats-v2.pdf.bz2
Description: application/bzip
gcc-8-
On 03/06/2018 07:16 PM, Bin.Cheng wrote:
On Tue, Mar 6, 2018 at 5:50 PM, Martin Liška wrote:
Hi.
This is speed comparison of GCC 8 builds compared to my system GCC 7.3.0
which is built with PGO bootstrap.
I run empty C and C++ source file, tramp3d and the rest are some big beasts
from GCC sou
Hi Richard,
On 06/03/18 16:04, Richard Biener wrote:
On Tue, Mar 6, 2018 at 4:21 PM, Renlin Li wrote:
Hi all,
The problem described here probably only affects targets whose ABI allow to
pass structured
arguments of certain size via registers.
If the mode of the parameter type is BLKmode, in
On 4 March 2018 at 02:40, Ray McAllister wrote:
> Hi, I'm totally blind. I do most of my programming in BASIC, but I use C++
> now and then, actually, for drawing fractals. I code graphics. I've been
> using Dev-C++ because it's the only thing I can find compatible with my
> screen reader. I do
Hello Chaitanya,
On Fri, Mar 02 2018, Sai Chaitanya wrote:
> Hello,
> I am Chaitanya.while checking the organisation for GSOC I am very
> confused,sir I have skills in C,C++, Java and little bit of python,till now
> I didn't take part in any big projects.
> Please guide me which organisation and w
CCing Andi Kleen, mentor of this project.
Regards,
Prathamesh
On 3 March 2018 at 16:22, Prateek Kalra wrote:
> Hello GCC Community,
> My name is Prateek Kalra.I am pursuing integrated dual
> degree(B.tech+M.tech) in Computer Science Software Engineering,from Gautam
> Buddha University,Greater No
Hello, Tejas,
On Fri, Mar 02 2018, Joseph Myers wrote:
> On Fri, 2 Mar 2018, Tejas Joshi wrote:
>
>> I have some university level experience of working and programming assembly
>> language under Intel 80386DX architecture. I think it may help for
>> implementing supports for other architectures. J
Hello Prateek,
On Sat, Mar 03 2018, Prateek Kalra wrote:
> Hello GCC Community,
> My name is Prateek Kalra.I am pursuing integrated dual
> degree(B.tech+M.tech) in Computer Science Software Engineering,from Gautam
> Buddha University,Greater Noida.I am currently in 8th semester of the
> programme.
Any one for help me
I want to ask question about the ideas
reply please
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