linaro-toolchain

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5682 discussions

by Andrew Stubbs

Continued work on 64-bit shifts in core registers. This has now been posted to gcc-patches, and is awaiting review. 64-bit shifts in NEON are also working correctly, but the register allocator chooses not to use them most of the time. I've begun trying to work out why, but it's quite involved in ira-costs.c and will take some unpicking, I think. Attempted to create a Linaro GCC 4.7 branch, but my test build failed, so that'll have to wait until it's stabilized a little.

14 years, 1 month

sysroots for the next binary toolchain release

by Michael Hope

Hi Marcin, Ricardo. How is the work on pre-built sysroots coming along? I'd like to use/reference them in the next binary toolchain release. I'm looking for: * Scripts that produce the sysroots * A README that covers what they contain and how to reproduce them * Test plan * An official tagged branch holding the above * A tarball release of the above * A tarball release of the different sysroots * Done in a way so they easily integrate with the binary builds[1] and are useful to others as a sysroot * Relocatable * Usable on win32 and Linux all hosted somewhere. Zhenqiang and I can test and give you feedback. For reference, here's the README for the binary builds: http://launchpadlibrarian.net/90998258/README.txt Here's the simple script I used to make a libc only sysroot: http://bazaar.launchpad.net/~linaro-toolchain-dev/crosstool-ng/linaro/view/… I used chdist as I don't know multistrap. I guessed and added build-dep support to download the build dependencies. It also fixes up the absolute symlinks to relative. -- Michael [1] https://launchpad.net/linaro-toolchain-binaries

14 years, 1 month

[Activity] Week 4 - W/e 27th January

by Ramana Radhakrishnan

==Progress=== * Fixed PR48308 on FSF trunk. Needs backporting to FSF GCC 4.6 branch * Fixed a number of failing testcases on trunk. * Read up on Partial-partial PRE . Slow progress but getting a handle on the theory now. A couple of approaches being benchmarked . Still slow progress. * Debugged Andrew's issues with 64 bit shifts. Nice that skype screen sharing works well on Ubuntu. * Started notes for Connect 2012.q1. * Looked into the strd / strexd failure on the testcase in trunk. Looked at a small patch to implement sync_lock_releasedi for ARM but needs some more time and effort. Filed issue https://bugs.launchpad.net/gcc-linaro/+bug/922474 === Plans === * Finish 1x AFDS * Continue with partial-partial PRE . * Finish backport of fix for PR50313 to appropriate branches * Start preparing for Connect 2012.q1 * Do something about the PGO and ABI patches next week. Absences. * Feb 6-10 : Linaro Connect Q1.12. * Feb 13- 18 : Holiday.

14 years, 1 month

[ACTIVITY] weekly status

by Ken Werner

Hi, * libunwind * reviewed small patch from T. R. of Nokia who provided a bugfix in case unwind instructions are popping VFP registers * exchanged mails with P. W. from Bosch who encountered a crash in case DWARF info is involved * OpenEmbedded * changed Qt build to respect the optimization flags * wrote a script around QEMU to measure the memory footprint using named pipes to communicate with the serial console of the guest * rebuilt the minimal, sato and qt4e images using the gcc-linaro-arm-linux-gnueabi-2012.01-20120125_linux (optimization levels: -O2, -O3 -fno-tree-vectorize and -O3) * collected/updated the ELF size and memory footprint results: * https://docs.google.com/spreadsheet/ccc?key=0AmsCLxCMnnISdDNQSEM2ZHIxd3dVNj… * https://docs.google.com/spreadsheet/ccc?key=0AmsCLxCMnnISdHFtZll0OWdiTlhpdj… * uploaded the image packs to: http://people.linaro.org/~kwerner/oe-core/ * prepared the environment to build the images using -O1 Regards, Ken

14 years, 1 month

[ACTIVITY] Jan 23 - Jan 27

by Ulrich Weigand

== GDB == * Committed follow-on patch to fix cosmetic issues resulting from the remote "info proc" patch set. == GCC == * Created 4.6 backport branch including Richard's subreg forward- propagation branch, the modes-tieable patch, and the combine.c regression fix, and evaluated for correctness and performance. Investigation of performance regressions uncovered a problem in the register allocator: tied subregs (validly) cause somewhat larger register pressure in certain cases, and this caused the 4.6 IRA to generate spills. Note that the 4.7 IRA is still able to allocate every pseudo in the very same code; this is a result of Vladmir's significant IRA rewrite in 4.7 ... * Investigated Ramana's vld1 patches, and a problem with excessive vmov's in the PR 51819 test case pointed out by Ramana. It turns out that when we extract a lane from a vector to memory using an offsetted address, we move the value through a core register instead of simply computing the address and using vst1. I'm working on a patch to address this. Mit freundlichen Gruessen / Best Regards Ulrich Weigand -- Dr. Ulrich Weigand | Phone: +49-7031/16-3727 STSM, GNU compiler and toolchain for Linux on System z and Cell/B.E. IBM Deutschland Research & Development GmbH Vorsitzender des Aufsichtsrats: Martin Jetter | Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen | Registergericht: Amtsgericht Stuttgart, HRB 243294

14 years, 1 month

[ACTIVITY] report week 04

by Peter Maydell

RAG: Red: Amber: Green: Current Milestones: || || Planned || Estimate || Actual || ||cp15-rework || 2012-01-06 || 2012-02-20 || || ||qemu-kvm-getting-started || 2012-03-04?|| 2012-03-04?|| || (for blueprint definitions: https://wiki.linaro.org/PeterMaydell/QemuKVM) Historical Milestones: ||a15-usermode-support || 2011-11-10 || 2011-11-10 || 2011-10-27 || ||upstream-omap3-cleanup || 2011-11-10 || 2011-12-15 || 2011-12-12 || ||initial-a15-system-model || 2012-01-27 || 2012-01-27 || 2012-01-17 || == cp15-rework == * discussions with Rusty == qemu-kvm-getting-started == * wrote patches for the A15 Fast Models boot-wrapper that allow you to pass the kernel/initrd/kernel command line via a parameter to the model rather than having to hard code them into an ELF file along with the boot-wrapper. This should make life a lot easier for the validation folk. * various discussions with validation/etc about what you can and can't do with a model and what the best setup is going to be * sorted out a Debian fs to use for KVM guest : this is needed because the kernel module doesn't do Thumb or VFP yet. * started on rearranging and improving the writeup/HOWTO on the wiki == other == * target-arm/arm-devs queues pushed upstream [Calxeda Highbank model is now in upstream QEMU] * helping Will Deacon track down what looks like a race condition in Linux's handling of VFP on SMP where signal handlers are involved * a QEMU Object Model patch series has landed upstream -- this will be a nasty rebase for qemu-linaro next week I think

14 years, 1 month

[ACTIVITY] w04

by Asa Sandahl

Hi! * -o2/-o3 benchmarking: Worked on and shared charts for the -o2/-o3 benchmark runs with gcc-linaro-4.6-2012.01. I have created charts for both the score of the benchmarks and the sizes (text segment) of the executables. Making improvements continuously as I get feedback from the team. The charts are stored in GoogleDocs: https://docs.google.com/a/linaro.org/leaf?id=0B1IP4dZWVaxZOGZlM2UwMGQtOGQyZ… * gcc4.7 benchmarking: Did benchmark runs on a late revision of gcc4.7. Next week I will process the data and list regressions/improvements against gcc4.6.2 and gcc-linaro-4.6-2012.01. * v8: Investigated possibility of running SunSpider stand-alone on the v8 engine. Found out that there is a stand-alone driver included in WebKit. Have built v8 on x86 and ARM (on ARM it takes ~18 min) and run SunSpider and the v8 benchmark suite. Next step I will try to build with another toolchain. It is not Make but SCons that controls the build, so I am not sure how to do that. https://wiki.linaro.org/AsaSandahl/Sandbox/JavaScriptBenchmarks * Bug triaging: I have triaged all "easy" ones in the list of new tickets. Michael will help me look through the rest of new and incomplete bugs which are mostly old ones (waiting for someone to take some action) or very tricky ones. Regards Åsa

14 years, 1 month

Re: GDB 7.4 released

by Michael Hope

On Wed, Jan 25, 2012 at 7:02 AM, Ulrich Weigand <Ulrich.Weigand(a)de.ibm.com> wrote: > > Hi Michael, > > GDB 7.4 has finally been released. What do we need to do to get the > 7.4-branch imported into Launchpad? I think last time (for 7.3) you did > that somehow ... Done as: lp:~linaro-toolchain-dev/gdb/7.4 and documented at: https://wiki.linaro.org/MichaelHope/Sandbox/GDBImport -- Michael

14 years, 1 month

QEMU A15 guest writeup

by Michael Hope

Peter, could you review: https://wiki.linaro.org/WorkingGroups/ToolChain/QEMUARMGuestQ411 please? I'm interesting in anything I've missed or exaggerated. The audience is the TSC or people outside Linaro who are interested in a summary of the changes. -- Michael

14 years, 1 month

Fwd: [cbuild] qemu-linaro-0~20120118+gitcc8661e armv7l completed

by Michael Hope

Hi Zygmunt. I've enabled the ARM native build on the QEMU auto builders. These are built in the validation lab on the Natty based tcpanda boards and end up on control under ~cbuild/cbuild/build/qemu-$version/qemu-$something.tar.xz. I've uploaded this build to http://people.linaro.org/~michaelh/incoming/qemu-armv7l-natty-cbuild236-tcp…. There's something wrong with embedding of the version number into the name. A quick 'does it run' test passes. Peter, could you check the configure log at: http://builds.linaro.org/toolchain/qemu-linaro-0~20120118+gitcc8661e/logs/a… and see if there's anything missing. The auto builders fire with each commit so there's always something up to date. You can list the builds at: http://ex.seabright.co.nz/helpers/buildlog/qemu and see the raw results at: http://builds.linaro.org/toolchain/qemu-linaro-0~20120118+gitcc8661e/logs/a… (after a lag) -- Michael ---------- Forwarded message ---------- From: Linaro Toolchain Builder <michael.hope+cbuild(a)linaro.org> Date: Thu, Jan 26, 2012 at 11:14 AM Subject: [cbuild] qemu-linaro-0~20120118+gitcc8661e armv7l completed To: "linaro-toolchain-builds(a)lists.launchpad.net" <linaro-toolchain-builds(a)lists.launchpad.net> tcpanda05 finished running job qemu-linaro-0~20120118+gitcc8661e on armv7l-natty-cbuild236-tcpanda05-cortexa9r1. The results are here: http://builds.linaro.org/toolchain/qemu-linaro-0~20120118+gitcc8661e 9 PASS 9 TEST This email is sent from a cbuild (https://launchpad.net/cbuild) based bot which is administered by Michael Hope <michael.hope(a)linaro.org>.

14 years, 1 month

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