Compiling GCC source
Hello everyone, I built gcc from the repo and it took around 2 hours but I am wondering should I wait two hours after every modification? Is there any way to recompile faster. That's very important as we will add some files and tests for OMPD. Thanks
Re: Compiling GCC source
Make sure to use all the cores available. make -j N e.g; make -j 8 On Mon, Feb 7, 2022, 12:26 AM Mohamed Atef via Gcc wrote: > Hello everyone, > I built gcc from the repo and it took around 2 hours but I am > wondering should I wait two hours after every modification? > Is there any way to recompile faster. > That's very important as we will add some files and tests for OMPD. > Thanks >
Re: Compiling GCC source
Hello, Only modified files will be recompiled, won't it? في الأحد، ٦ فبراير، ٢٠٢٢ ٩:٠٥ م Mir Immad كتب: > Make sure to use all the cores available. > > make -j N > > e.g; make -j 8 > > > On Mon, Feb 7, 2022, 12:26 AM Mohamed Atef via Gcc > wrote: > >> Hello everyone, >> I built gcc from the repo and it took around 2 hours but I am >> wondering should I wait two hours after every modification? >> Is there any way to recompile faster. >> That's very important as we will add some files and tests for OMPD. >> Thanks >> >
Re: Compiling GCC source
Yes, that is right. On Mon, Feb 7, 2022, 12:38 AM Mohamed Atef wrote: > Hello, > Only modified files will be recompiled, won't it? > > > في الأحد، ٦ فبراير، ٢٠٢٢ ٩:٠٥ م Mir Immad كتب: > >> Make sure to use all the cores available. >> >> make -j N >> >> e.g; make -j 8 >> >> >> On Mon, Feb 7, 2022, 12:26 AM Mohamed Atef via Gcc >> wrote: >> >>> Hello everyone, >>> I built gcc from the repo and it took around 2 hours but I am >>> wondering should I wait two hours after every modification? >>> Is there any way to recompile faster. >>> That's very important as we will add some files and tests for OMPD. >>> Thanks >>> >>
Re: Compiling GCC source
After i built it I tried make - j 8 and it's recompiling now i thought i will have messege like Every thing is up to date or there are no change done But it actually started to compile again في الأحد، ٦ فبراير، ٢٠٢٢ ٩:٠٨ م Mir Immad كتب: > Yes, that is right. > > On Mon, Feb 7, 2022, 12:38 AM Mohamed Atef > wrote: > >> Hello, >> Only modified files will be recompiled, won't it? >> >> >> في الأحد، ٦ فبراير، ٢٠٢٢ ٩:٠٥ م Mir Immad كتب: >> >>> Make sure to use all the cores available. >>> >>> make -j N >>> >>> e.g; make -j 8 >>> >>> >>> On Mon, Feb 7, 2022, 12:26 AM Mohamed Atef via Gcc >>> wrote: >>> Hello everyone, I built gcc from the repo and it took around 2 hours but I am wondering should I wait two hours after every modification? Is there any way to recompile faster. That's very important as we will add some files and tests for OMPD. Thanks >>>
Re: Compiling GCC source
The build system probably first tries to make sure if everything is in place and if there were any changes and re-compiles the new/changed files. How much time does it take when you try to rebuild? On Mon, Feb 7, 2022, 12:43 AM Mohamed Atef wrote: > After i built it > I tried make - j 8 and it's recompiling now i thought i will have messege > like > Every thing is up to date or there are no change done > But it actually started to compile again > > > في الأحد، ٦ فبراير، ٢٠٢٢ ٩:٠٨ م Mir Immad كتب: > >> Yes, that is right. >> >> On Mon, Feb 7, 2022, 12:38 AM Mohamed Atef >> wrote: >> >>> Hello, >>> Only modified files will be recompiled, won't it? >>> >>> >>> في الأحد، ٦ فبراير، ٢٠٢٢ ٩:٠٥ م Mir Immad كتب: >>> Make sure to use all the cores available. make -j N e.g; make -j 8 On Mon, Feb 7, 2022, 12:26 AM Mohamed Atef via Gcc wrote: > Hello everyone, > I built gcc from the repo and it took around 2 hours but I am > wondering should I wait two hours after every modification? > Is there any way to recompile faster. > That's very important as we will add some files and tests for OMPD. > Thanks >
Re: Compiling GCC source
45 mins and i am waiting في الأحد، ٦ فبراير، ٢٠٢٢ ٩:١٨ م Mir Immad كتب: > The build system probably first tries to make sure if everything is in > place and if there were any changes and re-compiles the new/changed files. > > How much time does it take when you try to rebuild? > > On Mon, Feb 7, 2022, 12:43 AM Mohamed Atef > wrote: > >> After i built it >> I tried make - j 8 and it's recompiling now i thought i will have messege >> like >> Every thing is up to date or there are no change done >> But it actually started to compile again >> >> >> في الأحد، ٦ فبراير، ٢٠٢٢ ٩:٠٨ م Mir Immad كتب: >> >>> Yes, that is right. >>> >>> On Mon, Feb 7, 2022, 12:38 AM Mohamed Atef >>> wrote: >>> Hello, Only modified files will be recompiled, won't it? في الأحد، ٦ فبراير، ٢٠٢٢ ٩:٠٥ م Mir Immad كتب: > Make sure to use all the cores available. > > make -j N > > e.g; make -j 8 > > > On Mon, Feb 7, 2022, 12:26 AM Mohamed Atef via Gcc > wrote: > >> Hello everyone, >> I built gcc from the repo and it took around 2 hours but I am >> wondering should I wait two hours after every modification? >> Is there any way to recompile faster. >> That's very important as we will add some files and tests for OMPD. >> Thanks >> >
Query regarding generating NOTE instruction at GIMPLE level
Hello, Is it possible to generate a NOTE instruction at GIMPLE level? My use case scenario is as below - I want to create a note for __builtin_xyz(_x) such that there is a placeholder just before function call and in RTL pass, I want to modify/assign register number at this placeholder location. _x = (unsigned int) _y; __builtin_xyz(_x);//_x is constant expression For above builtin function call, I want to insert a note just before the function call. I tried generating GIMPLE_NOP instruction as below - _x = (unsigned int) _y; GIMPLE_NOP __builtin_xyz(_x); But as per my understanding, a NOTE instruction behaves similar to GIMPLE_NOP that is to create a placeholder for some computation. 1. Is there any attribute that can be added to GIMPLE instruction? If yes, then there must be a mechanism that translates those attributes to NOTE instructions in the RTL pass? 2. Is there any different approach on achieving above goal? Thanks and Regards, Shubham
Re: Compiling GCC source
Hello, On Sun, Feb 06 2022, Mohamed Atef via Gcc wrote: > Hello everyone, > I built gcc from the repo and it took around 2 hours but I am > wondering should I wait two hours after every modification? > Is there any way to recompile faster. > That's very important as we will add some files and tests for OMPD. Of course it depends on the hardware that you use but generally no, it should not take hours, certainly not to recompile after simple modifications. Above all, at configure time: 1) Make sure that you disable bootstrap by passing --disable-bootstrap If you make any modifications to the compiler, please make sure you test them with bootstrap enabled before you submit them upstream, though. 2) If you use x86_64, you can speed up compilation by disabling building of 32-bit libraries by using --disable-multilib. 3) Only select languages that you need. For example, if you just need C, C++ and Fortran, use: --enable-languages=c,c++,fortran Again, the final test should cover every language you might have affected, but for OMPT the above could suffice. And of course, pass an appropriate -j option to make. This should help to significantly reduce build times for you. Martin
gcc-12-20220206 is now available
Snapshot gcc-12-20220206 is now available on https://gcc.gnu.org/pub/gcc/snapshots/12-20220206/ and on various mirrors, see http://gcc.gnu.org/mirrors.html for details. This snapshot has been generated from the GCC 12 git branch with the following options: git://gcc.gnu.org/git/gcc.git branch master revision 8eb329e963593342855b6072e5692659107337b7 You'll find: gcc-12-20220206.tar.xz Complete GCC SHA256=15a67d1e569a366ff277cdf7c2fd678d83850c5266535e76ce677a635d90fbd8 SHA1=52cc96ccae5fa91d0894d85859174257f5ee54f7 Diffs from 12-20220130 are available in the diffs/ subdirectory. When a particular snapshot is ready for public consumption the LATEST-12 link is updated and a message is sent to the gcc list. Please do not use a snapshot before it has been announced that way.
[Intel SPR] Progress of GCC support for Intel SPR features
Hello everyone! I have some questions to ask: 1. How does GCC support Sapphrie Rapids CPU now? 2. Does GCC 11 fully support all the features of SPR? From the release note, it seems that 5g ISA (fp16)/hfni is not supported yet. 3. What is the simulation tool used by GCC to verify SPR characteristics? Is it open source? Thanks for all the help, yancheng
Re: [Intel SPR] Progress of GCC support for Intel SPR features
On Sun, Feb 6, 2022 at 5:59 PM LiYancheng via Gcc wrote: > > Hello everyone! > > I have some questions to ask: > > 1. How does GCC support Sapphrie Rapids CPU now? > > 2. Does GCC 11 fully support all the features of SPR? > From the release note, it seems that 5g ISA (fp16)/hfni is > not supported yet. It will be included in GCC 12 which should be released in less than 4 months. > > 3. What is the simulation tool used by GCC to verify SPR characteristics? > Is it open source? Intel is doing the patching to GCC and binutils so I suspect they verify using their internal tools and I highly doubt it is free source. Thanks, Andrew Pinski > > Thanks for all the help, > > yancheng >
Re: [Intel SPR] Progress of GCC support for Intel SPR features
On 2022/2/7 10:03, Andrew Pinski wrote: On Sun, Feb 6, 2022 at 5:59 PM LiYancheng via Gcc wrote: Hello everyone! I have some questions to ask: 1. How does GCC support Sapphrie Rapids CPU now? 2. Does GCC 11 fully support all the features of SPR? From the release note, it seems that 5g ISA (fp16)/hfni is not supported yet. It will be included in GCC 12 which should be released in less than 4 months. Thank you for your reply！ 3. What is the simulation tool used by GCC to verify SPR characteristics? Is it open source? Intel is doing the patching to GCC and binutils so I suspect they verify using their internal tools and I highly doubt it is free source. Thanks, Andrew Pinski Any suggestions from Intel? Thanks! yancheng Thanks for all the help, yancheng
Re: [Intel SPR] Progress of GCC support for Intel SPR features
On Mon, Feb 7, 2022 at 11:16 AM LiYancheng via Gcc wrote: > > > On 2022/2/7 10:03, Andrew Pinski wrote: > > On Sun, Feb 6, 2022 at 5:59 PM LiYancheng via Gcc wrote: > >> Hello everyone! > >> > >> I have some questions to ask: > >> > >> 1. How does GCC support Sapphrie Rapids CPU now? > >> > >> 2. Does GCC 11 fully support all the features of SPR? > >> From the release note, it seems that 5g ISA (fp16)/hfni is > >> not supported yet. > > It will be included in GCC 12 which should be released in less than 4 > > months. > Thank you for your reply！ > >> 3. What is the simulation tool used by GCC to verify SPR characteristics? > >> Is it open source? > > Intel is doing the patching to GCC and binutils so I suspect they > > verify using their internal tools and I highly doubt it is free > > source. > > > > > > Thanks, > > Andrew Pinski > > > Any suggestions from Intel? > You can use Intel SDE(software-development-emulator) refer to https://www.intel.com/content/www/us/en/developer/articles/tool/software-development-emulator.html. And please use GCC12(main trunk, not released yet), and binutils 2.38(main trunk, not released yet). > Thanks! > > yancheng > > >> Thanks for all the help, > >> > >> yancheng > >> -- BR, Hongtao
