- linaro-toolchain - lists.linaro.org

by Peter Maydell

Progress: * "aarch64 preparation" patchset now in upstream QEMU master. For clarity: this doesn't enable anything by itself, but it's an important foundation for the work being done by people including Linaro, SuSE and Virtual Open Systems, and getting it upstream is both helpful for that work and an indication of progress. * posted a new version of mach-virt patchset (with a PL011 UART) * various planning meetings/calls * put together a "testing" quality branch that integrates the "-cpu host", "mach-virt" and OVS work on KVM v8 control: git://git.linaro.org/people/pmaydell/qemu-arm.git aarch64-kvm -- PMM

11 years, 11 months

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[ANNOUNCE] Linaro GCC 4.8 and 4.7 2013.09 released

by Christophe Lyon

The Linaro Toolchain Working Group is pleased to announce the release of both Linaro GCC 4.8 and Linaro GCC 4.7. Linaro GCC 4.8 2013.09 is the sixth release in the 4.8 series. Based off the latest GCC 4.8.1+svn202157 release, it includes performance improvements and bug fixes. Interesting changes include: * Updates to GCC 4.8.1+svn202157 * Improved AArch64 support (instructions, intrinsics). * Backports for bug fixes (PR56315,PR46975,PR57708,PR56979,PR57431,PR58041). Linaro GCC 4.7 2013.09 is the eighteenth release in the 4.7. Based off the latest GCC 4.7.4+svn202210 release, this is the fifth release after entering maintenance. Interesting changes include: * Updates to GCC 4.7.4+svn202210 The source tarballs are available from: https://launchpad.net/gcc-linaro/+milestone/4.8-2013.09 https://launchpad.net/gcc-linaro/+milestone/4.7-2013.09 Downloads are available from the Linaro GCC page on Launchpad: https://launchpad.net/gcc-linaro More information on the features and issues are available from the release pages: https://launchpad.net/gcc-linaro/4.8/4.8-2013.09 https://launchpad.net/gcc-linaro/4.7/4.7-2013.09 Mailing list: http://lists.linaro.org/mailman/listinfo/linaro-toolchain Bugs: https://bugs.launchpad.net/gcc-linaro/ Questions? https://ask.linaro.org/ Interested in commercial support? Inquire at support(a)linaro.org

11 years, 11 months

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help testing/upstreaming: [PATCH] libatomic is now supported on AArch64

by Michael Hudson-Doyle

--- Hi all, The reason for my most recent question on the list was that I was investigating if gccgo targeting aarch64 would work. It turns out that it's really close (to building and working for trivial programs, at least): it depends on libatomic which explicitly does not support AArch64, but when you try to build it, it appears to work fine. Hence this patch. Would it be possible for someone to: a) test this for me, or b) explain to me how to test it myself, and/or c) send this upstream, or d) offer advice on how to get it upstream myself? I'd sort of prefer the "explain to me" versions as I also want to run the gccgo/libgo tests :) If someone knows why libatomic unsupports aarch64, that'd be even better (maybe it's just that the sync intrinsics it uses weren't supported by gcc on aarch64 at the time?). Cheers, mwh libatomic/configure.tgt | 5 ----- 1 file changed, 5 deletions(-) diff --git a/libatomic/configure.tgt b/libatomic/configure.tgt index b9e5d6c..7eaab38 100644 --- a/libatomic/configure.tgt +++ b/libatomic/configure.tgt @@ -95,11 +95,6 @@ fi # Other system configury case "${target}" in - aarch64*) - # This is currently not supported in AArch64. - UNSUPPORTED=1 - ;; - arm*-*-linux*) # OS support for atomic primitives. config_path="${config_path} linux/arm posix" -- 1.8.1.2

11 years, 11 months

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running the tests after building a cross-gcc

by Michael Hudson-Doyle

Hi, Thanks to the advice from this list I've managed to build GCC targeting aarch64 (thanks!). Is there some way I can now run the tests in a Foundation model? I don't really know how this would work -- I guess using aarch64-unknown-linux-gnu-gcc etc to build binaries, scp them onto the model, run them and parse the output. Is this the sort of thing that people do? Cheers, mwh

11 years, 11 months

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[ACTIVITY] Week 36

by Yvan Roux

Short week (2 days off). == Progress == * 4.8 2013.09 backports: - Reviewed and committed several * Wiki cleanup: - Started to review some pages. * LRA: - Refactored the two posted patches in one. == Next == * Backports and Releases. * LRA * Book hotel/plane for Connect

11 years, 11 months

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[ACTIVITY] 2 - 6 September 2013

by Venkataramanan Kumar

== Progress == * Libssp support for AArch64 TCWG 23: NFS mounted from build system into the model and ran cross eglibc tests for a fresh SVN checkout. Had some failures. Looking at library missing issues. * Backports Completed backports and merge requests. Yvan helping out to commit 201411. == Plan == * Post RFC patch for Libssp support for AArch64 in GCC * Continue testing the patch for Libssp support for AArch64 in GCC and glibc TCWG-23. == Issues == * LTO/PGO work stopped now since libssp support priority is more. Misc ------- 9-Sep-2013 AMD Bangalore holiday.

11 years, 11 months

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[ACTIVITY] 2 - 6 September 2013

by Kugan

== Progress == * spec2k comparison between ARM and x86 - More benchmarks analysed. - Plan to complete first iteration for spec2k-int benchmarks this week * Addressing patch review - Woking on vrp based zero/sign extension elimination based on feedback - Started addressing comments for divmod optimization == Plan == * Continue with spec2k comparison between ARM and x86 * Wiki Cleanup

11 years, 11 months

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[ACTIVITY] 2 - 6 September 2013

by Omair Javaid

== Progress == * GDB Record and Replay (TCWG-197) Completed writing most of gdb process record Thumb32 instruction handling code. Created test data for various types of Thumb32 instructions Performed testing fixed some coding mistakes and bugs. * Visa Application Filled US visa application online for LCU13. Prepared US visa documentation to file visa immediately after coming back from UK. Made travel arrangement for UK visit. == Plan == * GDB Record and Replay Integrate gdb process record thumb32 support patch with gdb source and perform testing. Submit patch upstream. * Travel and Visas Collect travel information and travel to Cambridge UK by Sunday. * Days Off Thursday and Friday off for a small visit to Dubai before reaching UK on Sunday.

11 years, 11 months

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[Activity] Sept week 1

by Rob Savoye

== Progress == * Started setting up a GCC git mirror on git.linaro.org. * Tweaked Cbuildv2 & Jenkins to work with GIT repositories as well as source tarballs. * Jenkins now "bootstraps" a cross compiler by building the native GCC, and then using that to compile the cross GCC. * Got aarch64-none-elf building with newlib via Cbuildv2. * Finished binary tarball release support in Cbuildv2. * Almost got Canadian crosses building via Cbuildv2. * Continued work on Jenkins/Cbuildv2 integration. * Added ccache support to Cbuildv2. * Cbuildv2 now works on Fedora as well as Ubuntu. == Plan == * Finish setting up GCC git repository with Linaro branches fetched from svn and bzr. * Add support for building source tarballs. * Continuing with Jenkins/Cbuildv2 integration. (waiting for GCC git repository to be complete) * Get Jenkins to upload binary & source tarballs to snapshots.linaro.org. * Finish getting Canadian Cross builds working in Cbuildv2. == Issues == * Still waiting for Odroid hardware to get shipped. * Waiting for git-bzr-ng to be installed on git.linaro.org. * Git-svn is incredibly slow on initial fetch. (fetching the linaro/gcc-4_8-branch has been running over 24 hours)

11 years, 11 months

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[ACTIVITY] Week 36

by Will Newton

== Progress == * Worked on getting glibc benchtests into shape for string functions * More wiki cleanup (done?) * Backports and release of eglibc 2.18 2013.09 * Booked Cambridge trip for Sept 17th == Issues == * None == Plan == * More improvements to glibc benchtests for strings/malloc if possible * Get back to malloc and stack guard work -- Will Newton Toolchain Working Group, Linaro

11 years, 11 months

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[ACTIVITY] 2-6 Sept 2013

by Christophe Lyon

== Progress == * Backports for 2013.09: - committed several - reviewed - submitted a few new ones * Wiki pages cleanup * GCC trunk cross-validation: - need to work around results instabilities caused by incomplete threads support in QEMU. == Next == * Release 2013.09 next week after completing the latest backports. * Resume investigation on perfomance regression with peeling disabled. * GCC trunk validation: work on reporting * Book hotel/plane for Connect

11 years, 11 months

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[ACTIVITY] Week 36

by Renato Golin

== Progress == * Cross-compilation - Cleaning up v7A cores and features in Clang - Writing document on how to cross-build using Clang/LLVM - Creating bugs to deal with the issues found - Adding LZMA library dep to cross-build in LLVM - https://cards.linaro.org/browse/TCWG-200 * Divmod 64 - Long discussions about libcalls using registers with ARM - Trying to revive my old patch due to future improvements from ARM - It should also help future improvements on value_in_regs attributes, as well as other library calls in registers or with multiple return values - https://cards.linaro.org/browse/TCWG-199 * Maintenance - Patch reviews, discussions, as usual - Investigating breaking test-suite bot - Added two pandas to the lab for general use == Plan == * See that all patches created this week get through * Have a look at automating Phoronix (via Jenkins) * Find SLP-vectorizer regressions on ARM and fix them

11 years, 11 months

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[ACTIVITY] report week 36

by Peter Maydell

Progress: * rebased and fixed last issues in aarch64 prep patchset, sent it out with a note that I'm going to put it in a pullreq to be applied unless any further comments come up in review * reviewed Christoffer's GIC save/restore patchset * reviewed and cleaned up toolchain's QEMU wiki pages -- PMM

11 years, 11 months

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[ANNOUNCE] Linaro eglibc 2.18 2013.09 released.

by Will Newton

### About Linaro eglibc Linaro eglibc is a release of the eglibc C library with bug fixes and enhancements for ARM platforms. eglibc is a variant of the GNU libc designed to work well on embedded systems. ### Linaro eglibc 2.18 2013.09 The Linaro Toolchain Working Group is pleased to announce the 2013.09 release of Linaro eglibc 2.18, the first release in the 2.18 series. This release is based on the latest upstream eglibc 2.18 stable branch, but with additional features and bug fixes. #### Additional Features * None #### Bug Fixes * Fix for clone(2) built for Thumb2. ### Source #### Release Tarball * https://releases.linaro.org/13.09/components/toolchain/eglibc-linaro #### Development Tree * git://git.linaro.org/toolchain/eglibc.git This release was built from the `linaro_eglibc-2_18-2013_09_release` tag. ### Feedback and Support Subscribe to the important Linaro mailing lists and join our IRC channels to stay on top of Linaro development. * Linaro Toolchain Development [mailing list](http://lists.linaro.org/mailman/listinfo/linaro-toolchain) * Linaro Toolchain IRC channel on irc.freenode.net at `#linaro-tcwg` * Questions? [ask Linaro](http://ask.linaro.org/). * Interested in commercial support? inquire at [Linaro support](mailto:support@linaro.org) -- Will Newton Toolchain Working Group, Linaro

11 years, 11 months

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Two Pandas

by Renato Golin

Hi folks, Since we won't be using Pandas for buildbots any more, I decided to put them in the lab for general use. This is not LAVA or CBuild managed, and the purpose is to test, and possibly benchmark, small applications, build systems, native compilation, generated code, etc, in real hardware. For this purpose, the Pandas are great, so there you have it. There is no reservation mechanisms, but the etiquette is to "who" and "top", and if you're the only active user, go for it. Multiple users can use a single board if only testing, compiling, running code, but if someone is benchmarking, would be polite to use the other board. They're sporting a Linaro 13.03 release with kernel 3.5.0. If you need/want access to them, just let me know. cheers, --renato

11 years, 11 months

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[ACTIVITY] 26-30 August 2013

by Christophe Lyon

== Progress == * Backports for 2013.09: - updated list, assigned some to team members - submitted several requests - quite a few of them exposed dependencies, making it necessary to make several attempts. * Aarch64 frame layout: posted sample code using large frame on gcc-patches to get feedback. * Disable-peeling: resumed regression investigation. * Wiki pages cleanup * trunk validation: - continued to work on internal validation of trunk using our compute farm (build+cross validation) to help catch regressions early. == Plan == * Finish backports, sort out dependencies problems. * Disable-peeling: investigate regression * More wiki pages cleanup * trunk validation: improve reporting * install Ubuntu on Chromebook

11 years, 11 months

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[ACTIVITY] 26 -30 August 2013

by Venkataramanan Kumar

== Progress == * Libssp support for AArch64 TCWG 23: My approach to Cross testing eglibc from host failed since it needs the build directories to be shared. Mounting the image in build system and building eglic will not help as the changes will not be reflected, in the image booted in V8 model dyanamically. The test system only issues command via ssh but does not copy binary to the model. Need to try creating NFS mount from build system into the model. * Backports Lots of back porting and merging. 201624 and 201666 can be back ported together. Merge request submitted. 201406 to linaro branch. Small test case comment change. But the test case fails in linaro 4.8, but passes in trunk. It needs other revisions to be back ported, since vectorization improvement in trunk. I tried back porting all relevant versions r199402,r200394,r200600, r201282. But still fails since interface of function get_loop has changed in trunk somewhere. For 201411 look like need to hand pick and apply changes in arm.md file. since lot of changes gone in that file and simple merge will not be good. Also it may need some other revision to backport. * TCWG-209, Looked at wiki pages, Christophe assigned to me and gave some comments about updating/deleting them. == Plan == * Post RFC patch for Libssp support for AArch64 in GCC * GCC patch for gprof accepted, need to post patch in glibc. * Continue testing the patch for Libssp support for AArch64 in GCC and glibc TCWG-23. Try NFS mouting into the model. * Backport 201411 201406 from trunk. == Issues == * LTO/PGO work stopped now since libssp support priority is more.

11 years, 11 months

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[ACTIVITY] Week 35

by Zhenqiang Chen

== Issues == * None == Progress == * Conditional compare (CCMP) - Design tens of test cases to verify the codes. - Handle CCMP in vrp pass. If the compare in CCMP can be simplified, CCMP will be converted to a copy, compare or a bit operator. - Investigating to handle CCMP in jump-thread related optimization. - Investigating bootstrap issue when expanding conditional compare to optimized RTL. . It seams that there are illegal combinations of different compares since bootstrap OK if the two compares of CCMP have the same CODE. . Current check bases on function "arm_select_dominance_cc_mode". Need narrow down the root cause. == Plan == * Continue on conditional compare. == Panned leaves == * Sept. 3-6: internal meeting.

11 years, 11 months

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[ACTIVITY] Week 35

by Kugan

== Progress == * spec2k comparison between ARM and x86 - Initiated discussion and addressing the feedback - Looking at register allocation (IRA + Reload) for reduced test case and comparing with x86 - Analysed few more spec2k benchmarks * Back-porting - All the back ports are checked and reviewed. Thanks Yvan. == Plan == * Continue with spec2k comparison between ARM and x86 * Wiki Cleanup

11 years, 11 months

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[ACTIVITY] Aug week 4

by Rob Savoye

== Progress == * More work on Jenkins/Cbuildv2 integration. * Finished reviewing all 81 wiki pages I had to review. * Added a 'dryrun' option to Cbuildv2 that displays all configure and make command lines without executing them as a learning aid. * Added 'make check' to toolchain builds via Jenkins/Cbuildv2. * Added a simple "Hello World" test case in C++ to toolchain builds in Cbuildv2 to make sure the fresh build minimally works. * Added several more sections to the Cbuildv2 Usage wiki page. * Cbuildv2 can now downloads and builds several projects/ (QT, GTK, etc...) as a toolchain test. * Got the LAVA team to make many tweaks to Jenkins and other stuff to support TCWG needs for Cbuildv2. Now Jenkins does a toolchain build of all supported architectures for each commit to GCC upstream. * Two small wildland fires this week, plus 3 motorcycle accidents. == Plan == * More work on binary releases via Cbuildv2. * Import test results into Jenkins. * Continued work on Jenkins/Cbuildv2 integration. == Issues == * Libmudflap, needs -ldl, or make check fails when linking with --as-needed (used on Ubuntu by default). * On chromebook using a raring chroot, 'make check' for mpfr has these three test cases: tasinh, tcot, and tcsc which consume all the memory and hang when run with the other infrastructure libraries via Cbuildv2. The ttan and tsinh tests segfault, and tgamma return an incorrect result. These same test cases all pass if I use Cbuildv2 to only build and test mpfr. Weird...

11 years, 11 months

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[ACTIVITY] 24 - 28 August 2013

by Omair Javaid

== Progress == * GDB Record and Replay (TCWG-197) Wrote instruction type decoder code for ARM Thumb32 instructions. Wrote stub handlers for different type of Thumb32 instructions. Wrote process record handlers for various type of load/store instruction. Wrote a testing utility to test record and replay instruction decoding code. * Visa Application Received email notifcation for UK visa issuance for upcoming trip to Cambridge. Filled out US visa application form DS-160, gathering information required to complete my application. == Plan == * GDB Record and Replay Continue to write code for decoding and recording thumb32 instructions. Try to find a way to generate test data of various instructions to test record and replay code. * Travel and Visas Go to UK visa application center to collect my passport back. Apply for US visa and make an appointment for the interview for the week of 23rd September. Prepare for UK travel for the week of 14th September.

11 years, 11 months

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[ACTIVITY] Week 35

by Yvan Roux

== Issues == * none == Progress == * Reviewed 4.8 backports. * LRA: - Gathered testsuite failures on AArch32 and AArch64 - Fixed an AArch64 issue. - Posted 2 patches upstream as an RFC. == Plan == * Monday off (Child care) * 4.8 backports * LRA

11 years, 11 months

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[ACTIVITY] Week 35

by Renato Golin

== Progress == * Investigating Cross-Compilation with LLVM - Gathering all options necessary to cross-compile - Cross-compiling Clang+LLVM with Clang to ARM - Writing down all issues found during the process * Investigating the Clang Driver - Refactoring some common decisions about targets - Adding new CPUs, cleaning a few areas == Plan == * Try to upstream some patches to make cross-compilation a bit easier * Write a document on how to cross-compile with Clang on LLVM website

11 years, 11 months

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[ACTIVITY] Week 35

by Will Newton

== Progress == * 4 day week (Bank Holiday Monday) * Wiki cleanup pretty much done * More malloc implementation work * Further investigation of ptmalloc to see if it can be improved * Fixed gdb build for non-Intel architectures * Found an issue with clone in glibc 2.18 and committed a fix * Committed strlen code to glibc == Issues == * None == Plan == * Get glibc patches applied upstream * More malloc * Look into stack guard and pointer guard stuff for ARM -- Will Newton Toolchain Working Group, Linaro

11 years, 11 months

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LLVM-Cross compiler for ARM

by pavan p m

Hello, Is there any LLVM cross-compiler built for ARM. If not, then could you provide some pointers where I could start creating one? -- Regards, Pavan

11 years, 11 months

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Any plans for "ifunc-ing" more glibc routines?

by Michael Hudson-Doyle

Hi all, There has been interest from LEG members to ensure that optimal library routines are used on their platforms. My understanding is that the "correct" way of doing this these days is to use ifuncs to select the best implementation for a given system. I see that glibc 2.18 contains an ifunc-ed version of memcpy. Does the TCWG have a hit list of other functions that might get the same treatment? If so, does it have a plan and the resources to implement them? If it's a matter of resources, I think LEG might be able to help there. Cheers, mwh

11 years, 11 months

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backport of memcpy ifunc work to 2.17

by Michael Hudson-Doyle

Hi, Apologies in advance for any chinese whispers effects that happen, but colleagues at Canonical are attempting to backport this change: https://sourceware.org/git/?p=glibc.git;a=commit;h=ae65139d140ac85808c0666c… to the (e)glibc in current versions of Ubuntu, 2.17, but are encountering mysterious segfaults when building. These are the additional patches being used: arm/define-sfi_breg-and-PC_OFS.patch arm/Add-Cortex-A15-optimized-NEON-and-VFP-memcpy-rou.patch arm/Make-multiarch-memcpy-always-use-NEON-when-compi.patch arm/Clean-up-__libc_ifunc_impl_list.patch arm/Make-armv7-memcpy-implementations-SFI-friendly.patch arm/Use-push-pop-mnemonics.patch arm/Support-avoiding-pc-as-destination-register.patch arm/BX_ALIGN_LOG2.patch arm/Pass-dl_hwcap-to-IFUNC-resolver-functions.patch -- all grabbed from glibc git. Are we missing something obvious? :) Cheers, mwh

11 years, 11 months

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[ACTIVITY] Aug 18-23

by Rob Savoye

== Progress == * Got Cbuildv2 building native on Odroid and Wandboard via Jenkins using the LAVA build farm. * Improved support for native builds in Cbuildv2. * Added building binary tarballs for releases. * Looked at two patches for multilib support. * Reviewed a bunch of wiki pages, updated some, deleted some, some were ok as is and still useful. * Registered for LCU13. * Ordered Odroid XU & U2 boards. * Put out 2 lightning caused wildland fires. * Ran weekend music festival fund raiser for a local non-profit. == Plan == * Review more wiki pages. * Improve binary tarball support in Cbuildv2. * Add 'make check' to Jenkins builds. * Get Jenkins to do automated builds on LAVA build farm. * Get lava-tool working.

11 years, 11 months

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[ACTIVITY] 19 - 23 August 2013

by Kugan

== Progress == * spec2k comparison between ARM and x86 - Analysis ongoing - Preparing to post the results for internal discussions * Back-porting - Back ported all the assigned one - There are some make check failures for thread related test cases with qemu; investigating it == Plan == * Continue with spec2k comparison between ARM and x86 * Finish the back-ports

11 years, 11 months

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[ACTIVITY] 19 - 23 August 2013

by Venkataramanan Kumar

== Progress == 3 day week 21 August unwell and 23-August leave. * Libssp support for AArch64 TCWG 23: Sent RFC patch for review. http://sourceware.org/ml/libc-ports/2013-08/msg00044.html workign on cross testing eglibc from host. * Backport 201406 to linaro branch. Waiting for review. == Plan == * Post RFC patch for Libssp support for AArch64 in GCC * Continue testing the patch for Libssp support for AArch64 in GCC and glibc TCWG-23 * Backport 201411 201624 201666 from trunk == Issues == * LTO/PGO work stopped now since libssp support priority is more. * Waiting for Marcus feedback for Matt comments on gprof patches TCWG-20.

11 years, 11 months

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[ACTIVITY] Week 34

by Yvan Roux

== Issues == * none == Progress == * 2013-08 release: - Released 4.7 and 4.8 . * 4.8-2013.08 c++ and java reported issues: - Trying to reproduced the reported failures on x86 and a9hf, without success for the moment. * LRA: - Rebased the ongoing work on updated sources. - Preparing an upstream request for comment. == Plan == * Review roster * 4.8 backports * LRA

11 years, 11 months

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ACTIVITY] Week 34

by Zhenqiang Chen

== Issues == * None == Progress == * 2 day off. * Conditional compare - Send out RFC and basic support patches for community review. - Update and design test cases. - Investigating bootstrap issue when expanding conditional compare to optimized RTL. == Plan == * Continue on conditional compare. == Panned leaves == * Sept. 3-5: internal meeting.

11 years, 11 months

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[ACTIVITY] 19 - 23 August 2013

by Omair Javaid

== Progress == * GDB Record and Replay (TCWG-197) Studied ARM Thumb32 instruction encoding for thumb32 encoding Studied existing arm/thumb code for instruction decoding and recording Setup remote debug environment to debug arm native gdb record/replay code. * Spent a couple of hours reading gdb wiki pages and identified some improvement which I will make in coming weeks. * Prepared US visa application documents. == Plan == * GDB Record and Replay: write code for decoding and recording thumb32 instructions.

11 years, 12 months

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Re: ODroid testing

by Michael Hope

On 17 August 2013 14:36, Renato Golin <renato.golin(a)linaro.org> wrote: > On 17 August 2013 08:36, Michael Hope <michaelh(a)juju.net.nz> wrote: >> >> user/real is 3.81 so it was nicely CPU bound. The Wandboard runs at >> 1.0 GHz vs the U2 1.7 GHz and 142 / 1.7 = 83, which is very close to >> your 80 minutes. > > > Yes, on release builds, the SATA makes little difference. (+linaro-toolchain, which I dropped at the start) I had a hack and set up a chroot on my Tegra 3 OUYA to run distcc. With the Wandboard driving and a 'ninja make -j12', LLVM 3.3 built in 75 minutes (meh). You really need the 2 GiB of RAM - the 650 MiB left on the OUYA plus the occasional four 250 MiB g++ hurts. -- Michael

11 years, 12 months

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[ACTIVITY] Week 34

by Renato Golin

== Progress == * Nice holidays in Brittany. - Wine, cheese, more wine, some beaches... * ODroid buildbot still running... - After a long and hot week with all windows close (room temp > 25C), the bot has held stable no hotter than 63C and is running self-hosting (partial+full build) without a single hiccup. - I'd be very happy with them as buildbots (rather than Chromebooks) - I'd also be very happy to test the ODroid X2 (octo-A15/A7) == Plan == * Initial investigation on cross-compilation issues * Liaise with ARM on divmod issue (some ideas on ValueInRegs floating around)

11 years, 12 months

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[ACTIVITY] Week 34

by Will Newton

== Progress == * 4 day week (off Thursday) * Wrote a patch to fix gas NEON addressing mode bug and committed * Submit and respin of glibc malloc tests and fixes * Pushed cortex-malloc test and benchmark suite to git.l.o * More malloc work * Started wiki cleanup == Issues == * None == Plan == * Further malloc work * Get glibc patches applied upstream * Complete wiki cleanup -- Will Newton Toolchain Working Group, Linaro

11 years, 12 months

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[ACTIVITY] report week 34

by Peter Maydell

Progress: * QEMU maintenance: ** versatile-pb PCI: sent kernel patchset, so this is off my queue now unless there are problems in review ** interviewing candidates for Linaro QEMU position ** sent pullreq for various accumulated QEMU patches now 1.7 development has opened up ** booked travel, hotels for Connect USA, KVM Forum -- PMM

11 years, 12 months

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building gcc-linaro for AArch64

by Michael Hudson-Doyle

Hi, I was trying to build a gcc-linaro that targets AArch64 (mostly following guides such as http://jk.ozlabs.org/docs/arm64-toolchain/) and failing, to be short and simple. Unfortunately I don't have the errors I was encountering to hand, so instead I'll ask: Is the build process for building aarch64-linux-gnu-gcc and friends documented anywhere? Cheers, mwh

12 years

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[ANNOUNCE] Linaro GCC 4.8 and 4.7 2013.08 released

by Yvan Roux

The Linaro Toolchain Working Group is pleased to announce the release of both Linaro GCC 4.8 and Linaro GCC 4.7. Linaro GCC 4.8 2013.08 is the fifth release in the 4.8 series. Based off the latest GCC 4.8.1+svn201477 release, it includes performance improvements and bug fixes. Interesting changes include: * Updates to GCC 4.8.1+svn201477 * Improved shrink-wrapping optimization. * Improved tail-calls optimization. * Improved AArch64 support (instructions, intrinsics). * Improved AArch64 vectorizer cost model. * Backports for bug fixes. Linaro GCC 4.7 2013.08 is the seventeenth release in the 4.7. Based off the latest GCC 4.7.4+svn201655 release, this is the fourth release after entering maintenance. Interesting changes include: * Updates to GCC 4.7.4+svn201655 The source tarballs are available from: https://launchpad.net/gcc-linaro/+milestone/4.8-2013.08 https://launchpad.net/gcc-linaro/+milestone/4.7-2013.08 Downloads are available from the Linaro GCC page on Launchpad: https://launchpad.net/gcc-linaro More information on the features and issues are available from the release pages: https://launchpad.net/gcc-linaro/4.8/4.8-2013.08 https://launchpad.net/gcc-linaro/4.7/4.7-2013.08 Mailing list: http://lists.linaro.org/mailman/listinfo/linaro-toolchain Bugs: https://bugs.launchpad.net/gcc-linaro/ Questions? https://ask.linaro.org/ Interested in commercial support? Inquire at support(a)linaro.org

12 years

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[ACTIVITY] Week 33

by Yvan Roux

4 days week. == Issues == * Calxedas are down. == Progress == * 2013-08 release: - Merged 4.7 FSF branch. - Reviewed 4.8 FSF branch merge. - Started 4.7 release process. * LRA: - Resumed AArch64 work. == Plan == * Release 4.7 and 4.8 * 4.8 backports * LRA

12 years

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[ACTIVITY] 12 - 16 August 2013

by Omair Javaid

== Progress == * Spent a couple of days studying existing patches and code changes made for reverse debug support. * Evaluated record n replay and reverse debug support by testing these features in various configuration with few forced code changes. * Evaluated catch syscall patch by running it on chrome book. * Finally submitted UK visa application. Spent a couple of days preparing documents getting them attested and took the trip to UK visa application center for application submission. * Independence Day Public Holiday on 14th August. == Plan == * Continue work on Reverse debug on arm major task next week is to study arm documentation and identify changes required for thumb32 support in process record and replay feature. * Review and update TCWG Libraries and Dev tools wiki pages.

12 years

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[ACTIVITY] 12 - 16 August 2013

by Venkataramanan Kumar

== Progress == * Libssp support for AArch64 TCWG 23: Understood the TCB datastructure. Sent a mail to the internal team on the changes needed and where to put stack gaurd slot in TCB. Got some comments from Matt. Worked on the changes in eglibc. Tested a simple stack smashing program in V8 model by moving the patched run time linker and glibc. Sent the RFC internally for review. * 4 day week 15-August India naional holiday. == Plan == * Post RFC patch for Libssp support for AArch64 in GCC and glibc TCWG-23 * Continue testing the patch for Libssp support for AArch64 in GCC and glibc TCWG-23 * Backport and test revision 201406 to linaro branch. == Issues == * LTO/PGO work stopped now since libssp support priority is more. * Waiting for Marcus feedback for Matt comments on gprof patches TCWG-20. Misc ------ 23-August availing leave.

12 years

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[ACTIVITY] Aug 12-16

by Kugan

== Progress == * spec2k comparison between ARM and x86 - Trying to reproduce some of the earlier optimization studies - Set up Acovea Trying milepost gcc * VRP based zero/sign extension elimination - Posted the modified patch == Plan == * Continue with spec2k comparison between ARM and x86 * Wiki Cleanup

12 years

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[ACTIVITY] Aug 12-18

by Rob Savoye

== Progress == * Made it back from the Tetons after a rainy climbing trip * Helped Vish with #357 * Cbuildv2 improvements for cross builds and binary releases * Wrote script to for better Jenkins support * Added more user parameters to Jenkins config page for building toolchains. == Plans == * More work on Cbuildv2 for building binary releases * Write more Cbuildv2 docs * More help on #357 * Start going through Wiki pages * Investigate lava-tool so Cbuildv2 can use Jenkins slaves remotely

12 years

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[ACTIVITY] Week 33

by Will Newton

== Progress == * Short week (3 days off to move house) * Submitted outstanding glibc patches after 2.18 release * Wrote some glibc allocator tests which have exposed some minor issues == Issues == * None == Plan == * Complete glibc allocator tests and submit them * Get malloc implementation functionally complete -- Will Newton Toolchain Working Group, Linaro

12 years

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[ACTIVITY] 12-16 Aug

by Christophe Lyon

== Progress == * 2013.08 4.8 release: - completed achievable backports (postponed some with problems to next release) - created & uploaded release. Will be announced next week along with 4.7 - Matthias a reported a problem in c++/java * Aarch64 frame layout: submitted sample code for internal discussion. * Wiki cleanup: started * trunk validation: - continued to work on internal validation of trunk using our compute farm (build+cross validation) to help catch regressions early. - validating every commit seems too heavy currently == Plan == next week off

12 years

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[ACTIVITY] Week 33

by Renato Golin

== Progress == * Connect / LLVM Meeting - Checking times, booking tickets, etc * Divmod - Some more divmod work, SelectionDAG changed enough to break my merge - Since it's only 64-bit support, we'll postpone implementation for a later date - Internal discussions with ARM, trying to approach it in a different way * Buildbots - Investigating MCJIT test failure in buildbot - Some other random breakages - Testing an ODroid U2 as a buildbot, will leave it running for a week non-stop - Checking why ClamAV has different output on Chromebook vs. ODroid/Panda/x86 * ODroid U2 - Testing ODroid vs. Chromebook / SDCard vs. External HD - ODroid with SDCard is faster than Chromebook with External HD! - The huge heat-sink, the possibility of adding a fan and its form factor make it a really good candidate for a buildbot * Background - Meetings with ARM, LLVMLinux - Interviewing potential candidates - Reviewing & committing patches, discussions, etc. * Cross-compilation - Preparing the terrain to start investigation == Plan == Another week off! :D

12 years

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[ACTIVITY] report week 33

by Peter Maydell

Progress: * v7 mach-virt upstreaming: ** sent out an RFC patchset implementing '-cpu host' for QEMU for v7 CPUs * QEMU maintenance: ** versatile-pb PCI issues came up again; testing kernel patches etc -- PMM

12 years

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code generation options for v8 compilers

by Padgett Don-B43265

Is there a way to generate A32 code with the gcc-linaro-aarch64- compilers? I looked at the bare metal and linux 2013.07 versions, but didn't see a way to do this. Also, the compiler doesn't complain about -mcpu=cortex-a53 or -mcpu=cortex-a57, but I get unknown cpu errors from the assembler for these options. It looks like it is the case today that there is just generic v8 code generation and more specialized code generation will come later. Is that right? Thanks, Don

12 years

2
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[ACTIVITY] Week 33

by Zhenqiang Chen

== Issues == * None == Progress == * Investigate and close lp:1208945 and lp:1210713. - For lp:1208945, libc.so.6 should be at /lib/arm-linux-gnueabihf. - For lp:1210713, aufs is not a part of standard linux kernel release. But aufs is supported by Ubuntu release. So maybe need it for future releases. * Conditional compare - Enhance reassoc pass to handle conditional compare - Investigating bootstrap issue when expanding conditional compare to optimized RTL. * Investigate LDTS tickets about multilib build issues. - Local builds are OK for Linaro GCC 4.7 and 4.8. == Plan == * Send out the conditional compare patches for review. == Panned leaves == * Aug. 19-20: annual leaves * Sept. 3-5: internal meeting.

12 years

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