search for: r327254

Teresa, Peter, Thanks for your help! I need to re-run my experiments as the compiler I used did not have the latest changes like r327254. The fact that the decision about routing calls through jump table entries is made early may be problematic. In my experiments with FreeBSD kernel, ThinLTO produced thousands jump table entries compared to only dozens with full LTO. As for re-ordering jump table entries, I don’t think it’s going to...

...email example, it seems like the file static i=53 could > be constant propagated since there are no other defs, and the code in > get_fptr simplified during the compile step, but I assume this is part of a > more complex example where it is not possible to do this? Also note that > with r327254 we started importing global variables. Do you know why we > don't import in your case? I wonder if it has to do with it being CFI > inserted code? > > Teresa > > On Tue, Apr 17, 2018 at 9:17 AM <dmitry.mikulin at sony.com> wrote: > >> I watched Teresa’s talk on...

...fference if there are unused jump table entries. Peter On Thu, Apr 19, 2018 at 6:09 PM, via llvm-dev <llvm-dev at lists.llvm.org> wrote: > Teresa, Peter, > > Thanks for your help! > I need to re-run my experiments as the compiler I used did not have the > latest changes like r327254. > The fact that the decision about routing calls through jump table entries > is made early may be problematic. In my experiments with FreeBSD kernel, > ThinLTO produced thousands jump table entries compared to only dozens with > full LTO. As for re-ordering jump table entries, I don’t...

...! In your original email example, it seems like the file static i=53 could be constant propagated since there are no other defs, and the code in get_fptr simplified during the compile step, but I assume this is part of a more complex example where it is not possible to do this? Also note that with r327254 we started importing global variables. Do you know why we don't import in your case? I wonder if it has to do with it being CFI inserted code? Teresa On Tue, Apr 17, 2018 at 9:17 AM <dmitry.mikulin at sony.com> wrote: > I watched Teresa’s talk on ThinLTO from last year’s CppCon, an...

...e are unused jump table entries. Peter On Thu, Apr 19, 2018 at 6:09 PM, via llvm-dev <llvm-dev at lists.llvm.org<mailto:llvm-dev at lists.llvm.org>> wrote: Teresa, Peter, Thanks for your help! I need to re-run my experiments as the compiler I used did not have the latest changes like r327254. The fact that the decision about routing calls through jump table entries is made early may be problematic. In my experiments with FreeBSD kernel, ThinLTO produced thousands jump table entries compared to only dozens with full LTO. As for re-ordering jump table entries, I don’t think it’s going to...

.... > > Peter > > On Thu, Apr 19, 2018 at 6:09 PM, via llvm-dev <llvm-dev at lists.llvm.org> > wrote: > >> Teresa, Peter, >> >> Thanks for your help! >> I need to re-run my experiments as the compiler I used did not have the >> latest changes like r327254. >> The fact that the decision about routing calls through jump table entries >> is made early may be problematic. In my experiments with FreeBSD kernel, >> ThinLTO produced thousands jump table entries compared to only dozens with >> full LTO. As for re-ordering jump table...

...! In your original email example, it seems like the file static i=53 could be constant propagated since there are no other defs, and the code in get_fptr simplified during the compile step, but I assume this is part of a more complex example where it is not possible to do this? Also note that with r327254 we started importing global variables. Do you know why we don't import in your case? I wonder if it has to do with it being CFI inserted code? Teresa On Tue, Apr 17, 2018 at 9:17 AM <dmitry.mikulin at sony.com<mailto:dmitry.mikulin at sony.com>> wrote: I watched Teresa’s talk on...

.... >> >> Peter >> >> On Thu, Apr 19, 2018 at 6:09 PM, via llvm-dev <llvm-dev at lists.llvm.org> wrote: >> Teresa, Peter, >> >> Thanks for your help! >> I need to re-run my experiments as the compiler I used did not have the latest changes like r327254. >> The fact that the decision about routing calls through jump table entries is made early may be problematic. In my experiments with FreeBSD kernel, ThinLTO produced thousands jump table entries compared to only dozens with full LTO. As for re-ordering jump table entries, I don’t think it’s...

...eter >>> >>> On Thu, Apr 19, 2018 at 6:09 PM, via llvm-dev <llvm-dev at lists.llvm.org> wrote: >>> Teresa, Peter, >>> >>> Thanks for your help! >>> I need to re-run my experiments as the compiler I used did not have the latest changes like r327254. >>> The fact that the decision about routing calls through jump table entries is made early may be problematic. In my experiments with FreeBSD kernel, ThinLTO produced thousands jump table entries compared to only dozens with full LTO. As for re-ordering jump table entries, I don’t think...

...er >>> >>> On Thu, Apr 19, 2018 at 6:09 PM, via llvm-dev <llvm-dev at lists.llvm.org> wrote: >>> Teresa, Peter, >>> >>> Thanks for your help! >>> I need to re-run my experiments as the compiler I used did not have the latest changes like r327254. >>> The fact that the decision about routing calls through jump table entries is made early may be problematic. In my experiments with FreeBSD kernel, ThinLTO produced thousands jump table entries compared to only dozens with full LTO. As for re-ordering jump table entries, I don’t think...

...On Thu, Apr 19, 2018 at 6:09 PM, via llvm-dev <llvm-dev at lists.llvm.org> > wrote: > >>> Teresa, Peter, > >>> > >>> Thanks for your help! > >>> I need to re-run my experiments as the compiler I used did not have > the latest changes like r327254. > >>> The fact that the decision about routing calls through jump table > entries is made early may be problematic. In my experiments with FreeBSD > kernel, ThinLTO produced thousands jump table entries compared to only > dozens with full LTO. As for re-ordering jump table ent...

...;>> On Thu, Apr 19, 2018 at 6:09 PM, via llvm-dev <llvm-dev at lists.llvm.org> wrote: > >>> Teresa, Peter, > >>> > >>> Thanks for your help! > >>> I need to re-run my experiments as the compiler I used did not have the latest changes like r327254. > >>> The fact that the decision about routing calls through jump table entries is made early may be problematic. In my experiments with FreeBSD kernel, ThinLTO produced thousands jump table entries compared to only dozens with full LTO. As for re-ordering jump table entries, I don’t t...

...On Thu, Apr 19, 2018 at 6:09 PM, via llvm-dev <llvm-dev at lists.llvm.org> > wrote: > >>> Teresa, Peter, > >>> > >>> Thanks for your help! > >>> I need to re-run my experiments as the compiler I used did not have > the latest changes like r327254. > >>> The fact that the decision about routing calls through jump table > entries is made early may be problematic. In my experiments with FreeBSD > kernel, ThinLTO produced thousands jump table entries compared to only > dozens with full LTO. As for re-ordering jump table ent...

...r 19, 2018 at 6:09 PM, via llvm-dev <llvm-dev at lists.llvm.org> wrote: > > >>> Teresa, Peter, > > >>> > > >>> Thanks for your help! > > >>> I need to re-run my experiments as the compiler I used did not have the latest changes like r327254. > > >>> The fact that the decision about routing calls through jump table entries is made early may be problematic. In my experiments with FreeBSD kernel, ThinLTO produced thousands jump table entries compared to only dozens with full LTO. As for re-ordering jump table entries, I do...

...at 6:09 PM, via llvm-dev < > llvm-dev at lists.llvm.org> wrote: > > >>> Teresa, Peter, > > >>> > > >>> Thanks for your help! > > >>> I need to re-run my experiments as the compiler I used did not have > the latest changes like r327254. > > >>> The fact that the decision about routing calls through jump table > entries is made early may be problematic. In my experiments with FreeBSD > kernel, ThinLTO produced thousands jump table entries compared to only > dozens with full LTO. As for re-ordering jump tabl...

...M, via llvm-dev <llvm-dev at lists.llvm.org> wrote: > > > >>> Teresa, Peter, > > > >>> > > > >>> Thanks for your help! > > > >>> I need to re-run my experiments as the compiler I used did not have the latest changes like r327254. > > > >>> The fact that the decision about routing calls through jump table entries is made early may be problematic. In my experiments with FreeBSD kernel, ThinLTO produced thousands jump table entries compared to only dozens with full LTO. As for re-ordering jump table entries,...

...m-dev < > llvm-dev at lists.llvm.org> wrote: > > > >>> Teresa, Peter, > > > >>> > > > >>> Thanks for your help! > > > >>> I need to re-run my experiments as the compiler I used did not > have the latest changes like r327254. > > > >>> The fact that the decision about routing calls through jump table > entries is made early may be problematic. In my experiments with FreeBSD > kernel, ThinLTO produced thousands jump table entries compared to only > dozens with full LTO. As for re-ordering jump...

...-dev at lists.llvm.org> wrote: > > > > >>> Teresa, Peter, > > > > >>> > > > > >>> Thanks for your help! > > > > >>> I need to re-run my experiments as the compiler I used did not > have the latest changes like r327254. > > > > >>> The fact that the decision about routing calls through jump > table entries is made early may be problematic. In my experiments with > FreeBSD kernel, ThinLTO produced thousands jump table entries compared to > only dozens with full LTO. As for re-ordering...

...llvm-dev at lists.llvm.org> wrote: > > > > >>> Teresa, Peter, > > > > >>> > > > > >>> Thanks for your help! > > > > >>> I need to re-run my experiments as the compiler I used did not have the latest changes like r327254. > > > > >>> The fact that the decision about routing calls through jump table entries is made early may be problematic. In my experiments with FreeBSD kernel, ThinLTO produced thousands jump table entries compared to only dozens with full LTO. As for re-ordering jump table ent...

...rg> wrote: > > > > > >>> Teresa, Peter, > > > > > >>> > > > > > >>> Thanks for your help! > > > > > >>> I need to re-run my experiments as the compiler I used did not > have the latest changes like r327254. > > > > > >>> The fact that the decision about routing calls through jump > table entries is made early may be problematic. In my experiments with > FreeBSD kernel, ThinLTO produced thousands jump table entries compared to > only dozens with full LTO. As for re-ord...