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2020-12-09 Thread BuBleik SAL via Gcc
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Re: Help with PR97872

2020-12-09 Thread Hongtao Liu via Gcc
It seems better with your PR97872 fix on i386. Cat test.c typedef char v16qi __attribute__ ((vector_size(16))); v16qi f1(v16qi a, v16qi b) { return (a & b) != 0; } before f1(char __vector(16), char __vector(16)): pand %xmm1, %xmm0 pxor %xmm1, %xmm1 pcmpeqb %xmm1, %xmm0 pcmpeqd %xmm1, %xmm1 pand

Move STV(scalars_to_vector) RTL pass from i386 to target independent

2020-12-09 Thread Dinar Temirbulatov via Gcc
Hi, I have observed that STV2 pass added ~20% on CPU2006 456.hmmer with mostly by transforming V4SI operations. Looking at the pass itself, it looks like it might be transformed into RTL architecture-independent, and the pass deals only not wide integer operations. I think it might be useful on oth

Re: cacheflush.2

2020-12-09 Thread Alejandro Colomar (man-pages) via Gcc
Hi Heinrich, It looks like a bug (or at least an undocumented divergence from GCC) in Clang/LLVM. Or I couldn't find the documentation for it. Clang uses 'char *': https://github.com/llvm/llvm-project/blob/7faf62a80bfc3a9dfe34133681fcc31f8e8d658b/clang/include/clang/Basic/Builtins.def#L583 GCC

Re: No warning for module global variable which is set but never used

2020-12-09 Thread webmaster
I have the following Code C\C++: static int foo = 0; static void bar(void) { foo = 1; } Here it is clear for the compiler that the variable foo can only be accessed from the same modul and not from ther modules. From the explanations before I understand that the variable is removed due to op

Re: No warning for module global variable which is set but never used

2020-12-09 Thread webmaster
I'm talking about C/C++ :-) Ursprüngliche Nachricht Von: Tobias Burnus Datum: 09.12.20 13:15 (GMT+01:00) An: webmaster Betreff: Re: No warning for module global variable which is set but never used The example below is for Fortran – but the same applies to C++ modulesand to

Re: Possible leaks observed in GCC.

2020-12-09 Thread Paul Floyd
On 12/9/20 1:44 PM, Tomar, Sourabh Singh via Gcc wrote: Hi Folks, I observed some leaks using valgrind while compiling a sample program using GCC. ==32090== Using Valgrind-3.13.0 and LibVEX; rerun with -h for copyright info Also 3.13 is rather old. 3.16.1 is the current release - not that

Re: Possible leaks observed in GCC.

2020-12-09 Thread Jakub Jelinek via Gcc
On Wed, Dec 09, 2020 at 12:55:40PM +, Jonathan Wakely via Gcc wrote: > > > I observed some leaks using valgrind while compiling a sample program > > > using GCC. > > > > This seems more appropriate for gcc-h...@gcc.gnu.org instead. > > > > > Could anyone aware of these details provide any insi

Re: Possible leaks observed in GCC.

2020-12-09 Thread Jonathan Wakely via Gcc
On Wed, 9 Dec 2020 at 12:53, Jonathan Wakely wrote: > > On Wed, 9 Dec 2020 at 12:45, Tomar, Sourabh Singh via Gcc > wrote: > > > > Hi Folks, > > > > I observed some leaks using valgrind while compiling a sample program using > > GCC. > > This seems more appropriate for gcc-h...@gcc.gnu.org inste

Re: Possible leaks observed in GCC.

2020-12-09 Thread Paul Floyd
On 12/9/20 1:44 PM, Tomar, Sourabh Singh via Gcc wrote: Hi Folks, I observed some leaks using valgrind while compiling a sample program using GCC. Could anyone aware of these details provide any insights to these leaks ? ==32090== Rerun with --leak-check=full to see details of leaked memory

Re: Possible leaks observed in GCC.

2020-12-09 Thread Jonathan Wakely via Gcc
On Wed, 9 Dec 2020 at 12:45, Tomar, Sourabh Singh via Gcc wrote: > > Hi Folks, > > I observed some leaks using valgrind while compiling a sample program using > GCC. This seems more appropriate for gcc-h...@gcc.gnu.org instead. > Could anyone aware of these details provide any insights to these

Possible leaks observed in GCC.

2020-12-09 Thread Tomar, Sourabh Singh via Gcc
Hi Folks, I observed some leaks using valgrind while compiling a sample program using GCC. Could anyone aware of these details provide any insights to these leaks ? Command line Details: $ valgrind gcc main.c -g ==32090== Memcheck, a memory error detector ==32090== Copyright (C) 2002-2017, and G

Re: No warning for module global variable which is set but never used

2020-12-09 Thread webmaster
Ahh, ok. With these explanation I understand that the compiler does remove it because of optimatizion. This is somehow good and bad.  Good that unused variable does not consume any memory. Bad that developer is not informed that variable can be removed. Ursprüngliche Nachricht V

Re: Help with PR97872

2020-12-09 Thread Prathamesh Kulkarni via Gcc
On Tue, 8 Dec 2020 at 14:36, Prathamesh Kulkarni wrote: > > On Mon, 7 Dec 2020 at 17:37, Hongtao Liu wrote: > > > > On Mon, Dec 7, 2020 at 7:11 PM Prathamesh Kulkarni > > wrote: > > > > > > On Mon, 7 Dec 2020 at 16:15, Hongtao Liu wrote: > > > > > > > > On Mon, Dec 7, 2020 at 5:47 PM Richard Bi

Re: [EXTERNAL]Re: MIPS Maintainer

2020-12-09 Thread Maciej W. Rozycki
On Tue, 8 Dec 2020, Chao-ying Fu wrote: > >  Well, it's up to the GCC steering committee really to appoint maintainers > > , however you can post patches and help > > with getting reviews through right away.  There hasn't been much traffic > > with the MIPS po

Re: No warning for module global variable which is set but never used

2020-12-09 Thread David Brown
On 09/12/2020 11:00, Jakub Jelinek wrote: > On Wed, Dec 09, 2020 at 10:50:22AM +0100, David Brown wrote: >> I'd say that it makes sense to have such a warning as a natural >> enhancement to the existing "-Wunused-but-set-variable" warning. But I > > That is not really possible. > The -Wunused-but

Re: No warning for module global variable which is set but never used

2020-12-09 Thread Jakub Jelinek via Gcc
On Wed, Dec 09, 2020 at 10:50:22AM +0100, David Brown wrote: > I'd say that it makes sense to have such a warning as a natural > enhancement to the existing "-Wunused-but-set-variable" warning. But I That is not really possible. The -Wunused-but-set-* warning works by having two bits for the DECL

Re: No warning for module global variable which is set but never used

2020-12-09 Thread David Brown
On 09/12/2020 10:25, webmaster wrote: > Hello,I'm wondering why GCC does not throw any warning when a module global > variable is set (write) but never used (read).Is this behavior wanted? Does > it makes sense to add such warning?Greets > How do you expect the compiler to know if the variable

Re: No warning for module global variable which is set but never used

2020-12-09 Thread Jonathan Wakely via Gcc
On Wed, 9 Dec 2020 at 09:28, webmaster wrote: > > Hello,I'm wondering why GCC does not throw any warning when a module global > variable is set (write) but never used (read).Is this behavior wanted? Does > it makes sense to add such warning?Greets This question seems to be more appropriate for

No warning for module global variable which is set but never used

2020-12-09 Thread webmaster
Hello,I'm wondering why GCC does not throw any warning when a module global variable is set (write) but never used (read).Is this behavior wanted? Does it makes sense to add such warning?Greets