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On Wed, Apr 29, 2015 at 10:05 AM, David Blaikie <dblaikie at gmail.com> wrote: > > > On Wed, Apr 29, 2015 at 9:48 AM, Teresa Johnson <tejohnson at google.com> > wrote: >> >> Ok, thanks for the suggestion. I will rework the tests to do that. > > > In case you haven't found it already, %T in the lit syntax gives you a > uniquely named directory for the test Actually %T is just the base...

GCC LTO works ok for the test case with both bfd and gold linker. David On Tue, Oct 4, 2016 at 6:58 AM, Teresa Johnson <tejohnson at google.com> wrote: > > > On Mon, Oct 3, 2016 at 6:15 PM, Teresa Johnson <tejohnson at google.com> > wrote: > >> >> >> On Mon, Oct 3, 2016 at 5:24 PM, Xinliang David Li <xinliangli at gmail.com> >> wrote: >> >&g...

On Wed, Apr 29, 2015 at 11:19 AM, David Blaikie <dblaikie at gmail.com> wrote: > > > On Wed, Apr 29, 2015 at 10:55 AM, Teresa Johnson <tejohnson at google.com> > wrote: >> >> On Wed, Apr 29, 2015 at 10:05 AM, David Blaikie <dblaikie at gmail.com> >> wrote: >> > >> > >> > On Wed, Apr 29, 2015 at 9:48 AM, Teresa Johnson <tejohnson at google.com> >> >...

...c > $ objdump -t libmore.so |grep hello > 0000000000000000 *UND* 0000000000000000 hello_world > Same issue reproduces with just -flto (not just -flto=thin). So this is a general issue with ld.bfd interactions with LLVMgold.so. > > On Mon, Oct 3, 2016 at 4:40 PM, Teresa Johnson <tejohnson at google.com> > wrote: > >> >> >> On Mon, Oct 3, 2016 at 3:53 PM, Xinliang David Li <xinliangli at gmail.com> >> wrote: >> >>> What is the linker command line buidling liblldb.so? is libgcc.a passed >>> in? >&g...

..._raw_version,plx --- > -r=a.o,__llvm_profile_raw_version,l 8,9c8,9 < -r=b.o,__llvm_profile_raw_version,x < -r=b.o,__llvm_profile_filename,x --- > -r=b.o,__llvm_profile_raw_version,l > -r=b.o,__llvm_profile_filename,l I.e. with lld they are all marked as exported. Peter, any ideas? Teresa On Wed, May 9, 2018 at 9:52 AM Teresa Johnson <tejohnson at google.com> wrote: > Sorry, operator error. I can reproduce now. Interestingly, this does not > reproduce using gold, and they utilize the same underlying LTO API. Let me > dig a little using save-temps and see where they...

Thanks Easwaran. This is what we've observed as well, where the old PM inliner was only looking hot/cold callee information, which have signficantly smaller boosts/penalties compared to callsite information. Teresa, do you know if there is some documentation/video/presentation on how PGO information is represented in LLVM and what information is passed via the IR? I'm finding some difficulty in getting the big picture via the code. Graham Yiu LLVM Compiler Development IBM Toronto Software Lab Office: (9...

LLD revision is r331862. To add, I had initially tried it on r328903, which also reproduced the issue. On Wed, May 9, 2018 at 9:26 AM Pirama Arumuga Nainar <pirama at google.com> wrote: > Hi Teresa, > > Thanks for looking into this. I hadn't initially tried ToT, but it > reproduces in ToT as well when I tried. > > $ ./clang --version > > clang version 7.0.0 (trunk 331879) (llvm/trunk 331888) > Target: x86_64-unknown-linux-gnu > Thread model: posix > Installe...

No problem! I want to make sure you aren't blocked on trying ThinLTO. Thanks, Teresa On Mon, Aug 15, 2016 at 2:50 PM, Taewook Oh <twoh at fb.com> wrote: > Hello Teresa, > > > > Sorry I was working on another LLVM issue that more urgent for us, so > didn’t have much time to work on smaller test case. I’ll try the new API > and see if the issus is gone. T...

On Thu, Mar 24, 2016 at 6:35 PM, Duncan P. N. Exon Smith < dexonsmith at apple.com> wrote: > > > On 2016-Mar-24, at 12:58, Teresa Johnson <tejohnson at google.com> wrote: > > > > > > > > On Thu, Mar 24, 2016 at 6:35 AM, Duncan Exon Smith <dexonsmith at apple.com> > wrote: > > > > > > On Mar 24, 2016, at 6:22 AM, Teresa Johnson <tejohnson at google.com> > wrote:...

Ok, thanks for the suggestion. I will rework the tests to do that. Teresa On Wed, Apr 29, 2015 at 9:47 AM, Eric Christopher <echristo at gmail.com> wrote: > > > On Wed, Apr 29, 2015 at 9:36 AM Justin Bogner <mail at justinbogner.com> wrote: >> >> Teresa Johnson <tejohnson at google.com> writes: >> > On Wed, Apr 29, 2015 at...

On Thu, Jul 13, 2017 at 2:54 AM, Christudasan D <xander.cd at gmail.com> wrote: > Thank you Teresa. > > Yes, I would like to save the IR (*.bc and/or *.ll) after all > optimizations (especially thinLTO) are done and call *llc* separately. > Is there any specific document available online to see more about this > feature and various command-line switches that a compiler developer c...

On Tue, Oct 3, 2017 at 1:46 PM, Teresa Johnson via llvm-dev < llvm-dev at lists.llvm.org> wrote: > > > On Tue, Oct 3, 2017 at 1:38 PM, Graham Yiu <gyiu at ca.ibm.com> wrote: > >> Hi Teresa, >> >> Actually, enabling the new pass manager manually seems to have solved >> this issue, so this...

Sorry, operator error. I can reproduce now. Interestingly, this does not reproduce using gold, and they utilize the same underlying LTO API. Let me dig a little using save-temps and see where they diverge. Teresa On Wed, May 9, 2018 at 9:28 AM Pirama Arumuga Nainar <pirama at google.com> wrote: > LLD revision is r331862. To add, I had initially tried it on r328903, > which also reproduced the issue. > > On Wed, May 9, 2018 at 9:26 AM Pirama Arumuga Nainar <pirama at google.com> &g...

Thanks Peter, your patch does fix the reproducer. I filed https://bugs.llvm.org/show_bug.cgi?id=37422 to track this bug. I have no clue on how to resolve the tests - whether further cleanup is required in the code or in the tests. But if Teresa or you cannot get to it, I can, with some help, take a crack at fixing the tests. On Wed, May 9, 2018 at 11:26 AM Peter Collingbourne <peter at pcc.me.uk> wrote: > The problem is that ThinLTO is not dropping the non-prevailing > definitions, and they end up being emitted into the obje...

On Wed, Apr 18, 2018 at 4:49 PM, <dmitry.mikulin at sony.com> wrote: > Hi Teresa, > > Thanks for the info! > This example is my attempt to reduce FreeBSD kernel to something more > manageable :) > > I will take a look at why globals are not being imported in this case. > What’s the best tool to look into ThinLTO objects and their summaries? Most > dumpin...

...// __morestack lives in libgcc, a static library. >> if (&__morestack && Name == "__morestack") >> return (uint64_t)&__morestack; >> #endif >> #endif // __linux__ && __GLIBC__ >> >> >> On Mon, Oct 3, 2016 at 3:32 PM, Teresa Johnson <tejohnson at google.com> >> wrote: >> >>> >>> >>> On Mon, Oct 3, 2016 at 2:59 PM, Xinliang David Li <xinliangli at gmail.com> >>> wrote: >>> >>>> Is -fsplit-stack option used anywhere? My wild guess is that wi...

...aller test case for the -g issue? Now that I have pcc's patches merged I will try again to see if I can trigger it, probably with some larger internal benchmarks. But if you can give me more details on that problem that would be great. Let me know if you run into any other issues too! Thanks, Teresa On Mon, Aug 1, 2016 at 6:57 AM, Teresa Johnson <tejohnson at google.com> wrote: > > On Sat, Jul 30, 2016 at 6:45 AM, Teresa Johnson <tejohnson at google.com> > wrote: > >> Ok, good to know. >> >> Any luck on a smaller test case for either of the problems?...

I went ahead and replied to two of the review threads. I only considered the parts which would be left without the native wrapped bitcode support. Philip On 08/12/2015 01:24 PM, Teresa Johnson wrote: > I can remove the native wrapper portions of the associated patch and > add that later. Most of the support as I mentioned is for the bitcode > handling anyway, but I wanted to include a skeleton of the native > wrapper part. For the RFC, I wanted to show the end goal...

...morestack: #if defined(__i386__) || defined(__x86_64__) // __morestack lives in libgcc, a static library. if (&__morestack && Name == "__morestack") return (uint64_t)&__morestack; #endif #endif // __linux__ && __GLIBC__ On Mon, Oct 3, 2016 at 3:32 PM, Teresa Johnson <tejohnson at google.com> wrote: > > > On Mon, Oct 3, 2016 at 2:59 PM, Xinliang David Li <xinliangli at gmail.com> > wrote: > >> Is -fsplit-stack option used anywhere? My wild guess is that with ld.bfd, >> the thinLTO link for the DSO does not bring i...

Yes running LLVM performance test suite with LTO and Thin LTO enabled. Thanks, Siddharth On Fri, May 11, 2018 at 7:32 PM, Teresa Johnson <tejohnson at google.com> wrote: > I'm not completely sure what you are asking. Are you looking for > performance benchmarks to use for LTO and ThinLTO testing? Or are you > asking how to build/run with LTO and ThinLTO? Are you asking how to run > LLVM's performan...