similar to: Time zone issues when compiling R

AArch64AddressTypePromotion.cpp does a fair bit of work to help make these things work out well. It could probably be generalized for non-AArch64 targets as per the comment in the file header. > On Jun 26, 2014, at 10:42 AM, Sanjay Patel <spatel at rotateright.com> wrote: > > Cool HW trick. :) > Are those 'sxtw' ops free? > That’ll depend on the details of the

All, If we can speculatively execute a load instruction, why isn’t it safe to hoist it out by promoting it to a scalar in LICM pass? There is a comment in LICM pass that if a load/store is conditional then it is not safe because it would break the LLVM concurrency model (See commit 73bfa4a). It has an IR test for checking this in test/Transforms/LICM/scalar-promote-memmodel.ll However, I have

I think gcc is right. It inserted a branch for n == 0 (the cbz at the top), so that's not a problem. In all other regards, this is safe: if you examine the sequence of loads and stores, it eliminated all but the first load and all but the last store. How's that unsafe? If I had to guess, the bug here is that LLVM doesn't want to hoist the load over the condition (which it is right

Hi, I tried compiling the latest pre-release for R 3.3.3 for the NixOS Linux distribution [1], but the build fails during the "make check" phase because of the following 2 issues: 1) The "tools" test in "tests/Examples" requires network access, which it doesn't have in our build environment. Therefore, it fails as follows according to

Hi, Jiong, Thanks for the patch! It is a great start to support 32bit register in BPF. In the past, I have studied a little bit to see whether 32bit register support may reduce the number of unnecessary shifts on x86_64 and improve the performance. Looking through a few bpf programs and it looks like the opportunity is not great, but still nice to have if we have this capability. As you

Hi Sanjay, The behaviour I’m talking about I’ve actually pinned down to CodeGenPrepare not working too well with ISA’s that don’t have a good scaled load. I have a patch to fix it that is going through performance testing now. Your testcase seems specific to x86 – for aarch64 we get the rather spiffy: _Z3fooPii: // @_Z3fooPii // BB#0:

Thanks for the background on the concurrent memory model. So, is it sufficient that the loop entry is guarded by condition (cbz at top) for preventing the race? The loop entry will be guarded by condition if loop has been rotated by loop rotate pass. Since LICM runs after loop rotate, we can use ScalarEvolution::isLoopEntryGuardedByCond to check if we can speculatively execute load without

Ping From: Mandeep Singh Grang [mailto:mgrang at codeaurora.org] Sent: Tuesday, February 03, 2015 4:34 PM To: 'llvmdev at cs.uiuc.edu' Cc: 'ghoflehner at apple.com'; 'apazos at codeaurora.org'; mgrang at codeaurora.org Subject: Question on Machine Combiner Pass Hi, In the file lib/CodeGen/MachineCombiner.cpp I see that in the function

Dear R users, I have some environmental variables and I need to find the best combination of them in order to separate two main groups (coded 1 and 2). I have performed a discriminant analysis using the stepclass function as a method for selecting the most relevant environmental variables. The problem is that this function includes a parameter (start.vars) and my results change a lot when I

Thanks all. Amara, could you take a look? > On Nov 20, 2017, at 3:06 AM, Oliver Stannard <oliver.stannard at arm.com> wrote: > > Hi Quentin, > > I’ve raised: > https://bugs.llvm.org/show_bug.cgi?id=35359 <https://bugs.llvm.org/show_bug.cgi?id=35359> > https://bugs.llvm.org/show_bug.cgi?id=35360 <https://bugs.llvm.org/show_bug.cgi?id=35360> >

Hi Oliver, Thanks for trying this. Could you file a different PR for each of the problem you found and reference the umbrella PR: http://llvm.org/PR35347? <http://llvm.org/PR35347?> Thanks, -Quentin > On Nov 17, 2017, at 8:17 AM, Oliver Stannard <oliver.stannard at arm.com> wrote: > > Hi Quentin, > > One more reproducer, this time with small (<64bit) values

Some virtio-win drivers contain more files than just *.{cat,inf,sys}. They are filtered out currently, which prevents the drivers from being installed by PnP. Stop filtering driver files by extension, and copy all of them instead. Signed-off-by: Roman Kagan <rkagan@virtuozzo.com> --- v1 -> v2: - update unit test to match the changed behavior v2v/v2v_unit_tests.ml | 202

Instead of trying to split and parse elements from virtio-win paths, use the '*.inf' files supplied with the drivers to control how Windows drivers are installed. The following emails best explain how this works: https://www.redhat.com/archives/libguestfs/2015-October/msg00352.html https://www.redhat.com/archives/libguestfs/2015-November/msg00065.html Currently the product variant (eg.

On Tue, 2015-11-17 at 19:44 +0000, Richard W.M. Jones wrote: > I think one - maybe final? - problem. How can I tell the difference > between drivers for "client" versions of Windows (eg. Windows 7) > and server versions of Windows (eg. Windows 2008 Server)? > > It seems in many or most cases the drivers are identical, eg: > > $ md5sum viostor/2k12/amd64/*

I think one - maybe final? - problem. How can I tell the difference between drivers for "client" versions of Windows (eg. Windows 7) and server versions of Windows (eg. Windows 2008 Server)? It seems in many or most cases the drivers are identical, eg: $ md5sum viostor/2k12/amd64/* viostor/w8/amd64/* bbe250c13bf891fd7292ccab9908a63a viostor/2k12/amd64/viostor.cat

----- Original Message ----- > From: "Amnon Ilan" <ailan@redhat.com> > To: "Vadim Rozenfeld" <vrozenfe@redhat.com>, "Li Jin" <lijin@redhat.com> > Cc: "Richard W.M. Jones" <rjones@redhat.com>, "Roman Kagan" <rkagan@virtuozzo.com>, libguestfs@redhat.com, "Jeff > Nelson" <jenelson@redhat.com>,

I dual boot w8 and Arch Linux. Both are on the same ssd drive (each OS have of course a partition). Now I would like to virtualize w8 and run it inside Arch Linux using KVM/QEMU and Libvirt. w8 has already been installed on a ntfs partition. As it is brand new, it will not be difficult to reinstall it on a image.raw I have been reading some articles and found myself a little bit confused. 1-

Hello, This maybe a newbie question. I have a dataframe that looks like the sample at the bottom of the email. I have monthly precipitation data from several sites over several years. For each site, I need to extract years that have a complete series of 12 monthly precipitation values, while excluding that year for sites with incomplete data. I can't figure out how to do this gracefully

+Li Jin ----- Original Message ----- > From: "Vadim Rozenfeld" <vrozenfe@redhat.com> > To: "Richard W.M. Jones" <rjones@redhat.com> > Cc: "Roman Kagan" <rkagan@virtuozzo.com>, libguestfs@redhat.com, "Amnon Ilan" <ailan@redhat.com>, "Jeff Nelson" > <jenelson@redhat.com>, "Yan Vugenfirer"

I am using this command to install a w8 guest on my Archlinux host: virt-install --connect qemu:///system --name=tintinVM --ram 4096 --cpu host-model-only --os-variant=win7 --disk /dev/vg0/tintin,size=120,bus=virtio,sparse=false,format=raw --name="tintinVM" --network bridge=virbr0,model=virtio --graphics spice --cdrom /dev/cdrom The virtual machine window open and show the blue windows