linaro-toolchain September 2013

linaro-toolchain@lists.linaro.org

14 participants
54 discussions

by Will Newton

== Progress == * Committed glibc realloc test * Committed glibc malloc integer overflow patches and requested CVE number * More work on glibc malloc benchmarking * Investigated AArch64 gdb issue and submitted a patch * Investigated gas NEON issue and submitted a patch == Issues == * None == Plan == * Visit Linaro in Cambridge from Tuesday to Thursday (see you there!) * Submit glibc malloc benchmark * Get benchmark numbers for tweaked memcpy * Start glibc pointer guard work -- Will Newton Toolchain Working Group, Linaro

10 years, 7 months

[ACTIVITY] Week 37

by Renato Golin

== Progress == * Patches - Committed lzma fix for cross-compilation - Split ARMv7 fixes in three patches, committed - Reviewed many ARM patches * ImageMagick benchmark - Using IM's convert to test compiler performance - LLVM seems pretty good on x86_64, par on A15 and behind on A9 when compared to gcc 4.7 - http://people.linaro.org/~rengolin/llvm/scripts/ * Profiling - Found a serious bug in LLVM when emitting profile information - mcount segfaults on prelude, luckily only on x86. :D * Phoronix - Found out that our problems with Phoronix were not unique - Might need a bit more of work to get the build scripts changed - And A bit more to get the data out of the reports == Plan == * Profile IM's convert on A9 (after finding out why it's not generating gmon.out) * Hoping to find low-hanging SLP-vectorizer fruits... fingers crossed! * Try something on Jenkins, hopefully it'll be easy to get Phoronix and ImageMagick running on it

10 years, 7 months

[ACTIVITY] report week 37

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

10 years, 7 months

[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

10 years, 7 months

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

10 years, 7 months

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

10 years, 7 months

[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

10 years, 7 months

[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.

10 years, 7 months

[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

10 years, 7 months

[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.

10 years, 7 months

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linaro-toolchain September 2013