similar to: [LLVMdev] Question on Machine Combiner Pass

Hello All, (I'm only one step above a user, so would appreciate any technical answers thoroughly explained. But if you're in a real rush, I could just forward your reply to a local wizard for translation.) With the script below, I use rsync to mirror the /boot partition and the / (without /boot) partition on to removable ATA/IDE hard drives. (Insertion/removal of mirror drives are

Hi, This might sound like a n00b question, but I've honestly never done this with a Linux machine... (it is running Centos3) We have a 1U mail server with two 36GB SCSI drives in a hardware mirror config. There's no more room for any other drives in the case. It's filling up, so we now have two 74GB drives ready to take their place. Possible solutions that I've come up

In fact to commit the change before dealing with worst-case performance is a good idea because here we have 2 different issues. But the main idea of this RFC is an attempt to show the better approach to to these kinds of transformations and to suggest to use this approach in the future. At the same time, I'm trying to explain that this patch is not the performance one because the

Hi I had some doubts regarding what all the init application should do: >> so, that should that application do? >> - mount /dev/hda1 /new-root >> - cd /new-root >> - run-init 1. Of what I understand, before exitting, init should mount the realroot and execute the init process. Is realroot the '/' or the empty directory created (in the cpio archive) ?

This conflict is with many optimizations incl. copy prop, coalescing, hoisting etc. Each could increase register pressure and with similar impact. Attempts to control the register pressure locally (within an optimization pass) tend to get hard to tune and maintain. Would it be a better way to describe eg in metadata how to undo an optimization? Optimizations that attempt to reduce pressure like

On Jul 15, 2012, at 9:20 AM, Borja Ferrer <borja.ferav at gmail.com> wrote: > Jakob, one more hint, I've placed some asserts around the code you added and noticed that the InlineSpiller::insertReload() function is not being called. > > 2012/7/14 Borja Ferrer <borja.ferav at gmail.com> > Hello Jakob, > > I'm still getting the error, I can give you any other

Hi, I am recovering a CentOS 5.4 system. I've copied all partitions into the recovery system. I've installed grub boot loader. However, the original system is using /dev/sdb1 for root (/), while the recovery system is using LVM (/dev/vg0/lv1) for root (/). When recovery system boots, I got the panic error: * Mounting /dev/sdb1 on /sysroot * Mount: mounting

I''m running snv93. I''m trying to install a windows hvm domU using the virt-install command: /usr/bin/virt-install -n windowsts -r 2048 -s 20 -f /data/domU/windowsts --hvm --vnc -c /dev/dsk/c0t0d0s2 The vncviewer is unable to open a connection to the xend VNC server and is failing with the Connection refused (146) error message. xend is set up with the following properties:

Dear Sirs, I've a question belonging to the run-init utility. I'm trying to boot a full linux system from ram. Therefore I provide a kernel and initrd from a tftp server. The full rootfs is provided through a nfs-server and is at time a cpio-archive. That archive shall be copied to the local client and mounted in a tmpfs partition. After that, I want replace the oldroot bei the root

First, I am not a RedHat or linux newbie. I simply have not had to do what I am getting ready to do, and I want to see if I am going to run into a problems... My HDA drive is failing (I can hear the occasional click from it and I am seeing Smart errors, the transfer rate is slow but all my data is there). I have 3 partitions on it, the /, /boot/ and my game servers (this is also the drive the

All llvm-devs, We're going to introduce the new possible implementation for such optimizations as reciprocal estimation instead of fdiv. In short it's a replacement of fdiv instruction (which is very expensive in most of CPUs) with alternative sequence of instructions which is usually cheaper but has appropriate precision (see genReciprocalDiv in lib/Target/X86/X86InstrInfo.cpp for

Is there a formal, or preferred, method for importing a physical CentOS machine into a VMware instance? I know they make software to move Windows machines, but I couldn't find one to handle our CentOS servers. I have done something via scp/sftp in the past, which *seemed* to work, but if there's a better way I'm more than interested in hearing the process. Thanks! Scott

Sent from my Verizon Wireless 4G LTE DROID On Nov 19, 2016 10:26 AM, Sanjay Patel <spatel at rotateright.com<mailto:spatel at rotateright.com>> wrote: > > If I have my FMA intrinsics story straight now (thanks for the explanation, Hal!), I think it raises another question about IR canonicalization (and may affect the proposed revision to IR FMF): No, I think that we specifically

Hello everyone, With the release drawing near, it would be great to get the release notes into better shape. You can see the notes from rc2 online here: https://prereleases.llvm.org/11.0.0/#rc2 The release notes are typically the first thing people look at after the release, so it's a great opportunity to highlight the work that's been done since the last release. If you can think of

The potential advantage I was considering would be more accurate cost modeling in the vectorizer, inliner, etc. Like min/max, this is another case where the sum of the IR parts is greater than the actual cost. Beyond that, it seems odd to me that we'd choose the longer IR expression of something that could be represented in a minimal form. I know we make practical concessions in IR based on

Thanks! Committed in 158581772fc8f3d6c601ceba14a08285e46cb7e9 On Tue, Sep 15, 2020 at 4:23 PM Ahsan Saghir <saghir.ibm at gmail.com> wrote: > > Hi Hans, > Here are the PowerPC release notes for 11.0.0: > > Optimization: > > Improved Loop Unroll-and-Jam legality checks, allowing it to handle more than two level loop nests > Improved Loop Unroll to be able

Committed to 11.x as b6efbd6b5f22d0a251d2fba9a5d24ac21760b1cc. Thanks! On Thu, Oct 1, 2020 at 3:29 AM Lang Hames <lhames at gmail.com> wrote: > > Hi Hans, > > Apologies if I got here too late, but just in case I didn't here are some JIT release notes for 11.0.0: > > - LLJIT now supports execution of static inits / deinits via the LLJIT::initialize and

On 9/4/2012 11:16 AM, Khaled Mohammed wrote: > > Is there an option to do sret demotion via a register? if yes, do we > have a Target to see an example implementation? Hi Khaled, Check out X86TargetLowering::LowerReturn, and the call to getSRetReturnReg. The SRetReturnReg looks like a hack (each target that uses it, declares this variable individually), but that seems to be the

I am migrating off of a 40GIG hda to a new 160GIG sda disk. I plan on installing 4.2 from scratch. But after that what is the correct way do transfer all the data from hda (home partition really) to the new sda home partition? I presume there is just a couple files in /etc to restore also. Like hosts, passwd. Anything else? Other suggestions welcome also. this is my first time migrating to a

Hi, it seems like SelectionDAGBuilder expects returning of vectors (structures/arrays) to be lowered in either of the two ways: 1. Flatten the complex data types to simple data types, and return them using registers (done by TargetLowering::LowerCallTo) 2. sret demotion: return the address of the complex data type via a stack pointer Is there an option to do sret demotion via a register? if yes,