- linaro-toolchain - lists.linaro.org

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.

13 years, 10 months

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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

13 years, 10 months

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[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.

13 years, 10 months

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[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

13 years, 10 months

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[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

13 years, 10 months

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[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

13 years, 10 months

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[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

13 years, 10 months

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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

13 years, 10 months

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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

13 years, 10 months

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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>.

13 years, 10 months

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[ANNOUNCE] Linaro Toolchain Binaries 2012.01 released

by Michael Hope

The Linaro Toolchain Working Group is pleased to announce the release of the Linaro Toolchain Binaries, a pre-built version of Linaro GCC and Linaro GDB that runs on generic Linux or Windows and targets the glibc Linaro Evaluation Build. This is the first release. Releases will be made each month shortly after the corresponding source release. Uses include: * Cross compiling ARM applications from your laptop * Remote debugging * Build the Linux kernel for your board What's included: * Linaro GCC 2012.01 * Linaro GDB 2011.12 * A statically linked gdbserver * A system root * Manuals under share/doc/ The system root contains the basic header files and libraries to link your programs against. The Linux version is supported on Ubuntu 10.04.3 and 11.10, Debian 6.0.2, Fedora 16, openSUSE 12.1, Red Hat Enterprise Linux Workstation 5.7 and later, and should run on any Linux Standard Base 3.0 compatible distribution. Please see the README about running on x86_64 hosts. The Windows version is supported on Windows XP Pro SP3, Windows Vista Business SP2, and Windows 7 Pro SP1. The binaries and build scripts are available from: https://launchpad.net/linaro-toolchain-binaries/trunk/2012.01 Need help? Ask a question on https://ask.linaro.org/ Already on Launchpad? Submit a bug at https://bugs.launchpad.net/linaro-toolchain-binaries On IRC? See us on #linaro on Freenode. Other ways that you can contact us or get involved are listed at https://wiki.linaro.org/GettingInvolved. -- Michael

13 years, 10 months

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Re: -fsched-pressure options

by Michael Hope

On Wed, Jan 25, 2012 at 2:33 AM, Ulrich Weigand <Ulrich.Weigand(a)de.ibm.com> wrote: > > Michael, Åsa, > > as discussed in today's performance call, the 4.6 backport of Richard's > sched-pressure enhancements is available here: > https://code.launchpad.net/~rsandifo/gcc-linaro/alt-sched-pressure-4.6 > > To activate the feature, you need to use the options: > > -fsched-pressure -fsched-pressure-algorithm=model Åsa, I think we're ready to spawn benchmark jobs through the build farm. I've made a front end: http://ex.seabright.co.nz/helpers/scheduler/spawn to make it a little easier to use. To spawn a benchmark run, enter a job called benchmarks-<buildname> such as benchmarks-gcc-linaro-4.6+bzr106857~rsandifo~alt-sched-pressure-4.6 and spawn it into the 'test' queue. See the page for how to change the flags and benchmarks that are run. The results end up at: http://ex.seabright.co.nz/benchmarks/ which needs the password from: https://wiki.linaro.org/Internal/ToolChain I've spawned Ulrich's job into the queue as a test run. Let's see how it goes. If it works, you can spawn the ancestor (benchmarks-gcc-linaro-4.6+bzr106856) and later do a diffbench on the results. -- Michael

13 years, 10 months

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Bug triaging: 739305 "[armhf] libffi variadic support"

by Asa Sandahl

Hi, I am looking at ticket 739305 "[armhf] libffi variadic support" which still has status "New" for Linaro gcc. https://bugs.launchpad.net/ubuntu/+source/libffi/+bug/739305 If I understand correctly, David's patch is included in libffi in Oneiric, but not yet backported to Linaro gcc? What is the correct thing to do with this ticket for Linaro GCC? I was thinking it could be set to "Triaged", waiting for an appropriate time to backport. Regards Åsa

13 years, 10 months

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Linaro GCC mentioned in Phoronix article

by Christian Robottom Reis

Spotted this in a Phoronix article today: Overall it seems that most of the computational tests are performing better with the newer Ubuntu 11.10 and 12.04 user-space packages, which upgrades the GNU Compiler Collection to the 4.6 series over the 4.5 release found in Ubuntu 11.04. The 4.6 compiler upgrade with greater ARMv7 architecture enhancements is likely what can be attributed to most of the performance improvements found in this article. [...] See the results for yourself at: http://www.phoronix.com/scan.php?page=article&item=nvidia_tegra2_ubuntu&num… Good job, -- Christian Robottom Reis, Engineering VP Brazil (GMT-3) | [+55] 16 9112 6430 | [+1] 612 216 4935 Linaro.org: Open Source Software for ARM SoCs

13 years, 10 months

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agenda for tomorrow's call.

by Ramana Radhakrishnan

https://wiki.linaro.org/WorkingGroups/ToolChain/Meetings/2012-01-24 do folks have anything to add to this ? Ramana

13 years, 10 months

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[ACTIVITY] 16th - 20th January

by Andrew Stubbs

* Linaro Continued work on 64-bit multiplies. Cleaned up the patches a lot. Started testing work to check for correctness. Ironed out a few bugs. My turn for patch review week. * Other Spent most of the week in San Diego attending the formerly-known-as CodeSourcery annual meeting, now Mentor Graphics' ESD TOOLS team annual meeting.

13 years, 10 months

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[Activity] Week 3

by Ramana Radhakrishnan

Mostly bug hunting week with some time on Partial partial PRE. ==Progress=== * Fixed PR50313 - backport submitted to Linaro 4.6 branch for testing - Testing on FSF GCC 4.6 branch as well currently. * Followed up on PR48308 fix . No reply yet. * Triaged some of the test failures that we are currently seeing on FSF trunk. Reported a few bugs upstream which I think are now fixed. There are still too many vect failures for my liking ( nearly 30 odd unique) . Some of them are testisms and some of them probably need a bit of knowledge in the vectoriser. So could do with a hand here in case someone has some free time and needs things to look at . * Read up on Partial-partial PRE . Slow progress but getting a handle on the theory now. * Handed over the vld1 / vldm work to Uli - found another case where the compiler could do better while fixing up PR51819. Essentially in loop end code where we have cleanup code involving single elements from the vector, the backend prefers to move this to an integer register and store the value to memory which is just silly - See https://pastebin.linaro.org/385 * Fixed PR51819. Backported fix to Linaro 4.6 branch - The FSF 4.6 branch *doesn't* show this particular problem. === Plans === * Continue with partial-partial PRE . * Finish submitting PGO patch and ABI tests patch * Finish backporting PR50313 fix to the correct repositories. * Follow up on PR48308 and investigate this a bit further. * Start preparing for Connect 2012.q1 Absences. * Feb 6-10 : Linaro Connect Q1.12. * Feb 13- 18 : Holiday.

13 years, 10 months

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KVM tasks draft

by Michael Hope

I've taken the KVM Epic spec: https://wiki.linaro.org/WorkingGroups/ToolChain/Specs/KVMEpic and split this into a list of tasks: https://docs.google.com/spreadsheet/ccc?key=0Ap7fWLePADFVdHA3cTg1R3R2U2pzZ0… Mouse over the little orange triangle to see notes on what an item means.. There's a '1' in the column of each group that a task affects. I haven't put durations down. Some things are already under way outside Linaro. Comments? Feel free to edit directly. -- Michael

13 years, 10 months

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[ACTIVITY] Jan 16 - Jan 20

by Ulrich Weigand

== GDB == * Fixed some final minor issues with remote "info proc". Committed patch set to implement remote "info proc" (LP #804411) and remote core file generation (LP #804406) to mainline. Backported to Linaro GDB 7.3. == GCC == * Created patch to fix optimization failures on x86_64 exposed by Richard's subreg forward-propagation patch. * Set up Richard's loop-microbenchmarks suite and verified that the subreg forward-propagation patch causes no regression anywhere, and shows measurable improvements on some cases in GCC mainline. With the Linaro GCC 4.6 backport, results don't look as good; still investigating the cause. * Started looking into Ramana's vld1 patches. 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

13 years, 10 months

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[ACTIVITY] weekly status

by Ken Werner

Hi, * hacked the external toolchain recipe to use the latest version of the binary toolchain this kind of reverts the multiarch changes since oe doesn't support it yet * built the minimal, sato and qt images for armv7-a in three different flavors (-O2, -O3 -fno-tree-vectorize, -O3) using gcc-linaro-arm-linux-gnueabi-2012.01-20120112+bzr2318~linux see: http://people.linaro.org/~kwerner/oe-core/ * encountered that binutils 2.22 (the gas) fails to build with -O3 due to a warning about an unitialized variable I'm not convinced this is a real bug, I'll look at it as time permits workaround: --disable-werror * all nine of them (the images) are booting within qemu using vexpress_defconfig! There is one glitche with the mouse pointer: it doesn't match to the one of the SDL/VNC window as the guest pointer sometime accelerates faster that the host pointer I can hardly imagine this is due to miscompiled code * Extracted size informations about the generated ELF files: https://docs.google.com/spreadsheet/ccc?key=0AmsCLxCMnnISdDNQSEM2ZHIxd3dVNj… Regards, Ken

13 years, 10 months

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[ACTIVITY] report week 03

by Peter Maydell

RAG: Red: Amber: Green: A15 vexpress system model sufficient for KVM guest now done Current Milestones: || || Planned || Estimate || Actual || ||cp15-rework || 2012-01-06 || 2012-02-20 || || ||initial-a15-system-model || 2012-01-27 || 2012-01-27 || 2012-01-17 || ||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 || == cp15-rework == * some (slow) progress on this * made a list of the missing pieces in my current patchset and knocked off a few of the easier ones * fortunately this blueprint isn't really a critical blocker for KVM work any more == initial-a15-system-model == * vexpress-a15 now submitted upstream (in review) and in qemu-linaro * ...so this blueprint is complete * NB: doesn't boot in KVM but this is a trivial kernel-side issue == other == * this category seems to take most of my time :-( * patch review: still Calxeda, Samsung * patch review: softfloat type fixes * identified some bugs in softfloat and arm code that surface if a softfloat type is 64 bits (at the moment it is 32 bits in practice but it is being proposed to widen it) * wrote up the issues to be solved so somebody else can do qemu-linaro releases * got qemu-jeos building for ARM [an attempt at making qemu testing easier by having an automated "build toolchain/kernel/initrd" setup] * retested QEMU fused-multiply-accumulate against an A15 FPGA

13 years, 10 months

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Narrowing down regressions on trunk

by Michael Hope

Hi Åsa. The GCC 4.7 release is coming up and the ARM testsuite shows a lot of regressions: http://ex.seabright.co.nz/helpers/testlog/gcc-4.7~svn183205/logs/armv7l-nat… We've been running three builds a week: http://ex.seabright.co.nz/helpers/buildlog/gcc-4.7~svn and can use the result to track down the range of commits where a fault was introduced or exposed. Could you please look through the results and narrow down where each failure appeared? I've uploaded all of the results to: http://people.linaro.org/~michaelh/incoming/trunks.tar.xz One way is to look at the testsuite-diff.txt in each build as it should show the change in test results between one build and the next but might be incomplete. Another way is to pull the failures out of gcc-testsuite.txt and do a diff against the previous version. The output should be a revision range for each of the current failures. Script it up. Don't do it by hand. I'm not that mean. Ta, -- Michael

13 years, 10 months

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[ACTIVITY] w03

by Asa Sandahl

* Started with bug triaging, looked at four different bugs (including Michael's example). Challenging, but interesting. Got great help from Ramana and Andrew. * -o2/-o3 benchmark runs with gcc-linaro-4.6-2012.01 done. coremark, eembc, denbench, pybench and spec2000. Uploaded all results ~linaro-toolchain-wg/linaro-toolchain-benchmarks/private-runs. Posted results for -o2-neon vs -o3-neon-novect. Working on charts including also -o3-neon and -os. Got a bit too occupied with making the matplotlib charts look pretty. I will try to get all results posted next week. * Started the add-sunspider-as-a-benchmark blueprint in the background. Built the v8-engine stand alone on x86 (just with default options). It has a sample shell included. You can feed it with .js-files. Tried the v8 benchmark, which also comes with the engine. Regards Åsa

13 years, 10 months

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Absence next week (Jan 21-29, 2012)

by Zhenqiang Chen

Hi all, I will be out for vacation during Chinese Spring Festival (Jan 21-29, 2012). For emergency, call me at +86-13817948562. Best regards! -Zhenqiang

13 years, 10 months

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[ACTIVITY] Week 03

by Zhenqiang Chen

Summary: * Enhance crosstool-ng build process. Details: 1. Linaro crosstool-ng patches: * Update and commit the patch to strip debug sections. * rm *-cc.exe symblink for win32. * enable gdb for win32 (lp:918479) * Update README to add flip dependence for build. 2. Verify the following bugs and change status to "Fix Committed" * lp:906729 baremetal libc headers and libraries are in inconsistent places * lP:906077 binaries: baremetal include files are in the wrong place * lP:894527 binaries: remove all symlinks from the Windows build * lp:889984 binaries: should step across helper functions * lp:906662 binaries: pgversion can get out of sync with product 3. Analyzed bugs * lp:915137 Link failure due to absolute paths: Need more information to reproduce. * lp:p18478 wind32 doesn't have pkg-config: Try to build pkg-config for mingw32 host. But failed since it required preinstalled glib2. And configure error if cross building the glib. * lp:894528 binaries: can't run if the patch contains whitespace. Can not reproduce it on cygwin, but still have issue in DOS cmdline 4. Verify the prerelease binary package on windows. And find and workaround a gdb document name issue since filename on windows is case insensitive (lp:909195). 5. Raise the gcc trunk build fail issue to crosstool-ng mail-list. But not confirm "-EL" is the final root cause. Need more investigation. Planned Absence: * Jan 21-29, 2012 Chinese Spring Festival Best regards! -Zhenqiang

13 years, 10 months

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