linaro-toolchain April 2017

linaro-toolchain@lists.linaro.org

9 participants
26 discussions

New IRC Channel for Linaro Toolchain Working Group

by Matthew Gretton-Dann

All, During Connect the suggestion was made that each working group should have its own IRC Channel for discussions and topics relating to the group in particular (as opposed to #linaro which is 'generic' Linaro conversations). Therefore I have just set up #linaro-tcwg on Freenode for the Toolchain Working Group. This channel is public and open to anyone who wants to talk with the TCWG group about anything toolchain related. Thanks, Matt -- Matthew Gretton-Dann Toolchain Working Group, Linaro

2 years, 9 months

[ACTIVITY] 24 - 28 April 2017

by Diana Picus

== Progress == * [ARM GlobalISel] Support div [TCWG-1103] [1/10] - Committed upstream * [ARM GlobalISel] Fix fallback path [TCWG-1110] [2/10] - Fixed and committed another issue * [ARM GlobalISel] Fix loading i<32 from the stack [TCWG-1065] [2/10] - Committed upstream * Remove environment variables [TCWG-1114] [1/10] - Committed a first patch towards fixing this * Misc [4/10] - Meetings, mailing lists, code reviews - Minor GlobalISel cleanups - Put up a cron job on llvm-tk1-test-02 to track GlobalSel TableGen'erated code for ARM and AArch64 == Plan == * Out of office on Monday * [ARM GlobalISel] Use TableGen for inst selector [TCWG-1037] * [ARM GlobalISel] Add support for struct / array args [TCWG-1033] * Maybe finish TCWG-1114

6 years, 11 months

[ANNOUNCE] Linaro Binary Toolchain Release-Candidate GCC 5.4-2017.05-rc1

by Yvan Roux

The Linaro Binary Toolchain ============================ The Linaro GCC 5.4-2017.05-rc1 Release-Candidate is now available. Notice: All Linaro GCC 5 series toolchain users should migrate to the latest version of the Linaro GCC 5 toolchain in order to mitigate potential security exposure to CVE-2015-7547. See the NEWS section below for details. Download release-candidate packages from: (sources) http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2017.05-rc1/ (binaries) http://snapshots.linaro.org/components/toolchain/binaries/5.4-2017.05-rc1/ Previous snapshots and release-candidates are at: http://snapshots.linaro.org/components/toolchain/binaries/ Previous releases are at: http://releases.linaro.org/components/toolchain/binaries/ A description of the arm and Aarch64 target triples can be found at: https://collaborate.linaro.org/display/TCWGPUB/ARM+and+AArch64+Target+Tripl… Host Requirements ================== Linaro officially supports the current and previous Ubuntu LTS releases (as of the time of this release). This does not mean that the toolchain will not work on other/older Linux distributions. See the following for the life-time of Ubuntu LTS releases. https://wiki.ubuntu.com/Releases The host system upon which the cross-compiler will run requires a minimum of glibc 2.14, because of API changes to glibc's memcpy API. https://bugs.linaro.org/show_bug.cgi?id=1869 Package Versions ================= Linaro GCC 5.4-2017.05-rc1 http://releases.linaro.org/components/toolchain/gcc-linaro/5.4-2017.05-rc1/ Linaro glibc 2.21 (linaro/2.21) https://lists.gnu.org/archive/html/info-gnu/2015-02/msg00001.html Linaro newlib 2.1.0-2014.09 (linaro_newlib-branch) https://sourceware.org/ml/newlib/2013/msg01128.html Linaro binutils 2.25 (linaro_binutils-2_25-branch) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob_plain;f=bin… FSF GDB 7.12 (gdb-7.12-branch) https://lists.gnu.org/archive/html/info-gnu/2016-10/msg00007.html Linaro toolchain package git branches are hosted at: http://git.linaro.org/toolchain NEWS for GCC 5 (as of Linaro GCC 5.4-2017.05-rc1) ================================================== * Include GCC fix for Linaro bugzilla #2785: Internal compiler error using -mtune=cortex-a57.cortex-a53. https://bugs.linaro.org/show_bug.cgi?id=2785 * The soft-float targeted toolchains have now been configured to generate code using -mfloat-abi=soft. This makes arm-linux-gnueabi and armeb-linux-gnueabi toolchains use the “soft” FP ABI instead of “softfp”. Historically, TCWG’s toolchains provided both “soft” and “softfp” multilibs, but when switching from crosstool-ng to cbuildv2/abe (which support a single multilib) “softfp” multilib was choosen. Using “-mfloat-abi=soft” is a better choice for a gnueabi toolchain, since it doesn’t require cores to have a floating-point unit. This change should not break compatibility for toolchain users since the ABI will stay the same. The compiler and glibc libraries will not refernce FP instructions. * Include GCC fix for Linaro bugzilla #2562: ARM GCC 5.2 call weak function instead of strong when called through pointer https://bugs.linaro.org/show_bug.cgi?id=2562 * Include GCC fix for Linaro bugzilla #1925: [regression] FAIL: libgomp.fortran/retval1.f90 -O1 execution test https://bugs.linaro.org/show_bug.cgi?id=1925 * Include GCC fix for Linaro bugzilla #2185: aarch64-linux-gnu-g++ internal compiler error: in curr_insn_transform https://bugs.linaro.org/show_bug.cgi?id=2185 * Backported glibc patch to simplify static malloc interposition [BZ #20432] to correct user identified issue. commit 058b5a41d56b9a8860dede14d97dd443792d064b Author: Florian Weimer Date: Fri Aug 26 22:40:27 2016 +0200 malloc: Simplify static malloc interposition [BZ #20432] * Host binaries for x86_64 linux hosts now have symbols and debug information stripped in order to reduce the size of the toolchain binary archives. This reduces the archive size from 1.1G to 580M for aarch64-linux-gnu target with the gcc-5-branch. * Removed .la files from binary toolchain archive as these files break autotools builds. https://bugs.linaro.org/show_bug.cgi?id=2764 * The mingw toolchains are now archived using the rsync -L option in order to avoid problems with Windows extractors and symbolic links. https://review.linaro.org/#/c/16415/ This resolves the following user bugs: https://bugs.linaro.org/show_bug.cgi?id=2684 https://bugs.linaro.org/show_bug.cgi?id=2192 https://bugs.linaro.org/show_bug.cgi?id=2762 * Copy the libwinpthread DLL into the bin directories so it gets into the tmp directory before tar is run. https://review.linaro.org/#/c/13723/ * Increment binutils release date to 2016_02 to reflect the most recent commit: commit ef90a4718f535cbe6345b4e7168baea7b1972abf Author: Matthew Wahab <matthew.wahab(a)arm.com> Date: Tue Jan 12 16:35:30 2016 +0000 [ARM] Support ARMv8.2 RAS extension. * Baremetal sysroot names now contain 'newlib' rather than 'glibc'. * Manifests now contain relative paths rather than absolute paths. * Now generating proper manifest files. * Fixed pi requeue support in glibc 2.21 while allowing the existing 2.21 minimum kernel default setting. This was checked into the linaro/2.21/master branch. commit a68cafa11c500d8a49a3014c43c5152859d037ae Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Tue May 17 10:16:39 2016 -0300 Add runtime check for __ASSUME_REQUEUE_PI (BZ# 18463) commit 6e5cb616b5b442ce8b2664ad673c0acf42a490ac Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Mon May 16 19:01:10 2016 -0300 Remove __ASSUME_SET_ROBUST_LIST commit 9ac61c0047295696cbcdbc26bdc174c7bd25a3c8 Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Mon May 16 10:35:25 2016 -0300 Remove __ASSUME_FUTEX_LOCK_PI * Backported support into GCC for Cortex-A32, Cortex-A35, and Cortex-R8. * Applied fix for CVE-2015-7547 - A stack-based buffer overflow in glibc's getaddrinfo() was corrected in glibc 2.23 and backported into glibc 2.21. https://sourceware.org/ml/libc-alpha/2016-02/msg00416.html * ARMv8.1 Instruction Support - ARMv8.1 instructions support was checked into GCC and binutils. It has been backported into Linaro GCC 5.3 and Linaro binutils 2.25. * Backported -Bsymbolic-functions into Linaro binutils 2.25. * Performance related backports from Linaro GCC 5.2-2015.11, Linaro GCC 5.2-2015.12, and Linaro GCC 5.3-2016.01-1, Linaro GCC 5.3-2016.02, Linaro GCC 5.3-2016.03, Linaro GCC 5.3-2016.04, Linaro GCC 5.4-2016.06, Linaro GCC 5.4-2016.10, Linaro GCC 5.4-2016.12, Linaro GCC 5.4-2017.02 and Linaro GCC 5.4-2017.04 have been included. See the following Linaro GCC snapshots: http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.2-2015.11/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2015.12/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.01-1/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.02 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.03 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.04 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2016.06 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2016.10 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2016.12 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2017.02 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2017.04 Contact Linaro =============== File bugs at http://bugs.linaro.org For Linaro member support see http://support.linaro.org For Linaro community support email linaro-toolchain(a)lists.linaro.org

6 years, 11 months

[ACTIVITY] 24-28 April 2017

by Christophe Lyon

Short week (3 days off) == Progress == * Infrastructure: - patch reviews * Benchmarking: - troubleshooting systems configs * misc (conf-calls, meetings, emails, ....) == Next == * short week: Off Monday * benchmarking

6 years, 11 months

[ACTIVITY] 17 - 21 April

by Yao Qi

* Two days off, Mon and Tue [4/10] # Progress # * TCWG-1050, GDB 8.0 release. [2/10] 8.0 branch is created. Intel btrace python api patches are almost OK push to master and 8.0 branch. Patches should be pushed in soon. * TCWG-1040, Review SVE patches. [3/10] Write unit test to value/register conversion gdbarch hooks. C++-fy regcache so that I can easily verify the result in unit test. Still some fails, need to investigate further. They are needed to prove SVE changes are correct. * Upstream patches review [1/10] ** arm software single step patch review. There is still an open issue that the author didn't realize, that is, GDB has to understand there may be different kind of breakpoints on the same address. * Propose deprecate arm fpa support in GDB. I need to post the proposal in gdb-announce(a)sourceware.org this week, according to the deprecation process. # Plan # * Finish my unit test and post them for review (with regcache C++-fy patch). * Other issues on 8.0 release if any. -- Yao Qi

6 years, 12 months

[ACTIVITY] Weeks 16

by Yvan Roux

* Public Holiday (2/10) == Progress == o Linaro GCC/Validation (5/10) * Release Automation: - Deployed job to create snapshots/releases tags - Working on the missing jobs to complete automation process * GCC 7 preview release: - Mingw builds fixed after revert - Merged upstream GCC 7 and built binaries - Preapring Linaro GCC 7 branch o Misc (3/10) * Various meetings and discussions. == Plan == o Finalized 2017.05 RCs o Continue release automation

6 years, 12 months

[ACTIVITY] 17 - 21 April 2017

by Diana Picus

== Progress == * Out of office on Monday [2/10] * [ARM GlobalISel] Investigate divmod [TCWG-1086] - Broke this up into several smaller stories * [ARM GlobalISel] Support sub and mul [TCWG-1104] [1/10] - Committed upstream * [ARM GlobalISel] Support trunc [TCWG-1109] [1/10] - Committed upstream * [ARM GlobalISel] Support div [TCWG-1103] [2/10] - Mostly done, will upstream next week * [ARM GlobalISel] Fix fallback path [TCWG-1110] [2/10] - Oliver from ARM has started running csmith with GlobalISel and is finding several issues - Fixed one of them and committed upstream - Will commit another one next week * Misc [2/10] - Meetings, mailing lists, code reviews, buildbots - Minor cleanup in the ARM backend (renamed a subtarget feature to avoid future misuse) == Plan == * [ARM GlobalISel] Fix fallback path [TCWG-1110] * [ARM GlobalISel] Support div [TCWG-1103] * Resume [ARM GlobalISel] Use TableGen for inst selector [TCWG-1037]

6 years, 12 months

[ACTIVITY] 19 - 21 April 2017

by Peter Smith

3 day week,Monday and Tuesday off Achievements: [TCWG-614] Range Thunks - No review progress, blocked on a request for some refactoring to unify the address allocation. - Reworked my downstream patch stack in light of TCWG-1088 below. - Spent some time refactoring the code to try and make it easier to follow. [TCWG-1088] Refactoring of address assignment - Committed first patch reviewed last week - Sent out first couple of patches, no response from upstream, I'm hoping this is due to maintainers being on Easter holiday. Some upstream review on ILP32 patches. Plans for next week: - 2 day week, at ACCU2017 conference Wednesday to Friday. - Respond to any upstream review comments. - Find some small tasks to do to fit in the remainder of the time. Planned Absences - ACCU2017 next week (Wednesday to Friday)

6 years, 12 months

[ACTIVITY] 17 - 21 April 2017

by Prathamesh Kulkarni

== This Week == * PR79697 (2/10) - Updated patch on top of trunk, passes validation. * PR79715 (2/10) - Updated patch according to upstream feedback, passes native bootstrap * TCWG-1010 (4/10) - Playing with LLVM's bit-tracking DCE pass - WIP prototype * TCWG-1111 (1/10) - WIP patch * Misc (1/10) - Meetings == Next Week == - Submit and address upstream reviews for PR79697 and PR79715 - Submit malloc attr propagation for upstream review - TCWG-1111 - Try to resolve review 18103 (overriding cc/cxx)

6 years, 12 months

[ACTIVITY] 17-21 April, 2017

by Christophe Lyon

Monday off == Progress == * Infrastructure: - (lots of) patch reviews * Validation: - added tests to tcwg-regression - kernel-ci followup - binutils jenkins job: removed obsolete configs * Benchmarking: - updated patches, troubleshooting systems configs * GCC - finally succeeded to bootstrap gcc-5 on armv7 / backported fix for pr68390 - created setup for gcc-7-branch regression testing (in ST) * misc (conf-calls, meetings, emails, ....) == Next == * short week: Off Wed/Thu/Fri * benchmarking

6 years, 12 months

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linaro-toolchain April 2017