- linaro-toolchain - lists.linaro.org

[ACTIVITY] 18th - 22nd August 2014

by Venkataramanan Kumar

== Progress == * TCWG-180 Debugging - LTO bootstrap failure in Aarch64 with GCC 4.9. (4/10) Completed. Patch that sets same tune parameters solves the bootstrap compare errors in Branch. Closed the JIRA cards. There are still LTO IR streaming issues in trunk which needs to tracked down and fixed at tree level. and no plans of doing that now. * TCWG-520 ICE in linaro compiler for ARMv7 target. Bisected the revision in trunk which fixes that. Backported and tested and fixes tha bug. (4/10) * Others (2/10) * Bug migration from launchpad * Meetings Christophe, Ryan, Maxim and GCC status meeting * Misc and internal meeting. * setup LLVM. == Plan == * Continue Bug fix (TCWG 520). * Benchmark Core mark with LTO (TCWG-181). * Upstream patch review. == MISC == * Local Holiday on 29th August

10 years, 10 months

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[ACTIVITY] Week 34

by Yvan Roux

4 Days week. == Issues == * none. == Progress == * GCC 4.9 2014.09 (8/10) - Prepared all remaining revisions to backport - Reviews done - Validation done - Reports analysis ongoing. - Some newly introduced intrinsics tests on vca* are failing, analyzing the issue. == Next == * Complete backports. * launchpad bugs migration.

10 years, 10 months

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[ACTIVITY] 18-22 August 2014

by Kugan

== Progress == * TCWG-413 - Release benchmarking (2/10) - Analysed all the patches gone into the release for performance impact * TCWG-521 - Analysed Coremark and Spec2k for uxt/sxt optimizations TCWG-521(3/10) - Studied Coremark and have additional patches in development for missing cases. * bswap pr43550 (No card yet) (3/10) - Looked at the pr and it is not fixable with VRP - An alternate approach based patch is in testing to fix this. * 1 day off Sick (2/10) == Paln == * Continue with TCWG-521 and bswap pr43550

10 years, 10 months

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[Weekly] 18-22 AUG 2014

by Michael Collison

== This week == * TCWG-515 - Neon intrinsic testing part 1 (1/10) - Attempting testing on ARM targets; resolving build failures * TCWG-524 - Neon intrinsic testing part 4 (2/10) - Completed AARCH64 testing with no regressions found * TCWG-525 - Neon intrinsic testing part 5 (2/10) - Completed AARCH64 testing with no regressions found * Launchpad 1312931- gcc 4.8 internal compiler error: in add_stores, at var-tracking.c (3/10) - Resolved, tested and requested code review on linaro 4.8 branch - Resolved and tested on linaro 4.9 branch. - Reviewing test results * Linaro Connect Presentation (2/10) - Met with Maxim and Will to prepare outline - Began writing "Optimization Levels" portion of presentation == Next week == - Continue Neon intrinsic testing including getting ARM portion to execute - Complete "Optimization Levels" portion of Linaro Connect presentation - Resolve Launchpad 1312931 on Linaro 4.9 branch

10 years, 10 months

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[ACTIVITY] 18-22 August 2014

by Christophe Lyon

== Progress == * GCC trunk/4.9 cross-validation (5/10) - analysed reports sent during my holidays - troubleshooting problems with the compute farm (semaphores exhaustion, spurious parallel make failures, ...) * 2014.09 release - reviewed backport requests * LCU14 preparation (slides) (1/10) * Misc (conf calls, meetings) (410) - usual 1:1 and team calls - bugzilla triage - launchpad - bugzilla migration == Next == * GCC trunk/4.9 cross-validation * bug #306 (bootstrap failure on i686) * AArch64 linsanitizer * Neon intrinsic tests * prepare documents for Wang

10 years, 10 months

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[ACTIVITY] Week 34

by Renato Golin

== Progress == * Automation Framework (CARD-1378 2/10) - Changing D01s to 16 cores with taskset + schroot * LLVM 3.5 Release (TCWG-476 2/10) - Broken compiler-rt div/mod backported to 3.5 rc3 - Tested and released RC3 (possibly the last) * Toolchain (CARD-862 2/10) - Found problems with .fpu/.cpu directives in GAS - Trying to find a fix and join with the fpu parsing fix in LLVM * Background (4/10) - Code review (lots!), meetings, discussions(lots!), etc. - Self-hosting broken badly, bisecting bootstraped problems is hard == Plan == * Continue discussions about asm directives, parsing * Continue investigating buildbot failure * Move bots to CMake, enable compiler-rt * LLVM/Android lightning talk * LPC: LLVM Toolchain presentation * Change compilation to make Clang/LLVM non-NEON by default * Enable D01s as buildbots

10 years, 10 months

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[ACTIVITY] 18th - 22nd August 2014

by Bernie Ogden

=Progress= cbuild2 benchmarking - TCWG-360 [5/10] * Proposed a plan for benchmark storage * A bit more thought on cross-running * Prototyped script to launch/run/release on LAVA targets (e.g. wg) ** The 'run' part is pretty much independent of the 'LAVA' part lowlevellock.h commentary - ???? [2/10] * In response to a patch review, added some comments to this fairly obscure file * Took longer than expected, but the end's in sight so I guess I'll finish * I know a bit more about futexes and threads now Meetings/mail/etc [3/10] =Plan= Holiday. Back on 1st September.

10 years, 10 months

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[ACTIVITY] 11 - 15 August 2014

by Omair Javaid

== Progress == Arm gdb record-replay bug fix [4/10] [TCWG-314] * Testing of all patches on x86 and arm machines. * Patch submission upstream after sync up with latest gdb trunk. AArch64 gdb record-replay bug fix [3/10] [TCWG-503][TCWG-498] * Debugging of testsuite failures with apm and foundation mode. * Patch series update after sync up with latest trunk. GDB Tracepoints/Fast Tracepoints support on arm [2/10] [TCWG-480] * Search for previously submitted patches, wiki info and other documentation. * Started with initial study and code understanding. Miscellaneous [1/10] * Research GDB record/replay usage scenarios. * Meetings/emails and installation/configurations etc == Plan == AArch64 gdb record-replay bug fix [TCWG-503][TCWG-498] * Fix test failures if possible otherwise submit updated patches. GDB Tracepoints/Fast Tracepoints support on arm [TCWG-480] * Further study and investigate a missing functionality on arm. Verify GDB non-stop debug support on ARM. [TCWG-246]

10 years, 10 months

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[ACTIVITY] 11 - 15 August 2014

by Kugan

== Progress == * Looked at implementation options for backlog cards and closed/postponed cards that doss not benefit or cards that require excessive re-architecture that will not be possible now. (5/10) - TCWG-468 - Postponed after detailed study and discussion. - TCWG-412 (Support literal/constant pool sharing (wont-fix): As it is, intra procedularl literal pool fix happens in TARGET_MACHINE_DEPENDENT_REORG with arm_reorg. It is quite complex and somewahat hacky. it would become even more messy if we are to record these information and reuse it for whole program as a way to share literal poool. Additionally A-profile (which is Linaro's focus) dosent benefit from this as we use movw/movt instead. Therefore decided to clsoe this as wont fix. * TCWG-413 - Release benchmarking (2/10) - Benchmarking or release for a15 and a57 * Analysed coremark and spec2k for uxt/sxt optimizations (3/11) - Studied coremark and have additional patches in development for missing cases. * Misc - Looked at bug database and monitored patches relevant to arm/aasrch64 == Paln == * Look at open uxt/sxt bugs in gcc bugzilla * Study coremark and then spec2k for uxt/sxt

10 years, 10 months

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[Activity] Aug 11-16

by Rob Savoye

== Progress == * Reviewed a big pile of benchmarking patches for cbuild2. (TCWG 1378 - 2/10). * Worked on stabilizing "Backport" Jenkins job (TCWG 1378 - 6/10). * Meetings and Misc (2/10) == Plan == * Keep tracking down Jenkins issues with Backport job. * Get my D01 board working finally, since I killed my Odroid U2. * Do more thorough testing of SSH performance improvements.

10 years, 10 months

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[ACTIVITY] 8th - 14th August 2014

by Bernie Ogden

=Progress= cbuild2 benchmarking - TCWG-360 [4/10] * Some disagreements with gerrit * One of my patches broke bare metal builds (now fixed) * More review of the way we store benchmark sources Other - [5/10] * Meetings, mail, etc (featuring newlib build options, defaults, cbuild vs benchmark scripts) * Learned to use git-send-email, bent it to my will * Authentication pain on ARM-side Holiday - [1/10] =Plan= cbuild2 benchmarking * Finish source/data storage plan * Figure out how benchmark cross-running will work, get started on it Holiday next week (25th - 29th August)

10 years, 10 months

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[Weekly] 11-15 AUG 2014

by Michael Collison

== This week == * TCWG-515 - Neon intrinsic testing part 1 (3/10) - Completed testing with internal compiler error discovered compiling with -Og and -g - GCC bugzilla report 62040 already exists for this issue * TCWG-518 - Neon intrinsic testing part 2 (2/10) - Completed testing with no regressions found * TCWG-519 - Neon intrinsic testing part 3 (2/10) - Completed testing with no regressions found * Reviewed branch merge of Linaro 4.8 and 4.9 with FSF trees (3/10] == Next week == * Continue with neon intrinsic testing * Investigate bug 373 - [gcc-4.9][android][armv8] internal compiler error * Develop outline for Linaro Connect presentation

10 years, 10 months

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[ACTIVITY] 8th - 14th August 2014

by Venkataramanan Kumar

== Progress == * TCWG-180 Debugging - LTO bootstrap failure in Aarch64 with GCC 4.9. (6/10) Analyzed tree dumps between stage2 and stage3 compilers. Noted that extra gimple declarations in stage2 compiler. Also inline minimum parameters in gimple.c.048i.inline were different. Richard Beiner found that way we hash the string literals was different between stage2 and stage3 compilers. Tested the patch, he posted on trunk but it does not solve the comparison failures. Also GCC garbage collector parameters for expansion and maximum heap size varies between stage 2 and stage3. Setting this parameters to same value in stage2 and stage3 builds fixes bootstrap failures in Aarch64. These fixes are for trunk and stage 1 5.0. Ref: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62077 Still need to find a work around for release branches Testing these patches on AMD64 /Aarch64 machines. * Others (2/10) * Upstream patch review. * 1-1 Meeting Christophe. * Misc and internal meeting. * setup LLVM. * Friday national holiday (2/10). == Plan == * Continue LTO bootstrap issue. * Benchmark Core mark with LTO. * Upstream patch review. == MISC == None .

10 years, 10 months

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[ACTIVITY] Week 31 - 32 - 33

by Yvan Roux

-------------------------------------------------------------------------------- Week 31 -------------------------------------------------------------------------------- Short week, one day off (2/10) == Issues == * none. == Progress == * Respinned Linaro GCC 4.9-2014.07 (1/10) * Linaro GCC 4.9 2014.08 (6/10) - Prepared backports for release (38 revisions) - validation on-going * Misc: (1/10) - Various meetings. -------------------------------------------------------------------------------- Week 32 -------------------------------------------------------------------------------- On vacation :) == Issues == * none. == Progress == * GCC 4.9 2014.08 (3/0) - Analysed backports validation results. - Committed all backports. -------------------------------------------------------------------------------- Week 33 -------------------------------------------------------------------------------- Still on vacation :) == Issues == * none. == Progress == * GCC 4.9 2014.08 (2/0) - Merged FSF 4.9 branch into Linaro one - Released 2014.08 source tarball * GCC 4.8 2014.08 (2/0) - Merged FSF 4.8 branch into Linaro one - Released 2014.08 source tarball == Next == * Back to work on Tuesday

10 years, 10 months

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[ANNOUNCE] Linaro GCC 4.9 and 4.8 2014.08 released

by Yvan Roux

The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2014.08 stable release of both Linaro GCC 4.9 and Linaro GCC 4.8 source package. With the imminent release of ARMv8 hardware and the recent release of the GCC 4.9 compiler the Linaro TCWG will be focusing on stabilization and performance of the compiler as the FSF GCC compiler. The Linaro TCWG provides stable[1] quarterly releases and monthly engineering[2] releases. Linaro GCC 4.9 2014.08 is the fifth Linaro GCC source package release and first stable one in the 4.9 series. It is based on FSF GCC 4.9.2-pre+svn213803 and includes performance improvements and bug fixes. Interesting changes in this GCC source package release include: * Updates to GCC 4.9.2-pre+svn213803 * Backport of [AArch64] Drop ISB after FPCR write. * Backport of [AArch64] Remove from arm_neon.h functions not in the spec * Backport of [AArch32] Fix check for __FAST_MATH in arm_neon.h * Backport of [AArch64] fix and enable non-const shuffle for bigendian using TBL instruction * Backport of [AArch64] Fix constraint vec_unpack_trunk * Backport of [AArch32] Cortex-A5 rtx costs table * Backport of [AArch32] Handle clz, rbit types in arm pipeline descriptions * Backport of [AArch64] Fix argument types for some high_lane* intrinsics implemented in assembly * Backport of [AArch64] Handle fcvta[su] and frint in RTX cost function * Backport of [AArch64] Prologue rewrite + performance. Linaro GCC 4.8 2014.08 is the fourteenth release in the 4.8 series and is in maintenance. Based off the latest GCC 4.8.4+svn213802 release, it includes performance improvements and bug fixes. Interesting changes in this GCC source package release include: * Updates to GCC 4.8.4+svn213802 * Backport of Fix [AArch32] for PR sanitizer/58543 * Backport of Fix [AArch64] for PR target/59744 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@ * Bug reports should be filed in Launchpad against "Linaro GCC project": http://bugs.launchpad.net/gcc-linaro/+filebug. * Questions? "ask Linaro": http://ask.linaro.org/. * Interested in commercial support? inquire at "Linaro support":mailto: support(a)linaro.org [1] Stable source package releases are defined as releases where the full Linaro Toolchain validation plan is executed. [2] Engineering source package releases are defined as releases where the compiler is only put through unit-testing and full validation is not performed.

10 years, 10 months

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[ACTIVITY] 11 - 15 August 2014

by Will Newton

= Progress == * Upstream work (4/10, CARD-341) - Patch review (gdb, binutils) - glibc testsuites for ARM and AArch64 * Booting upstream kernel on Chromebook (4/10) - Tried u-boot path but Google's shipped NV u-boot is broken in several ways - Fall back to trying to boot a signed upstream kernel - Gets halfway through boot then seems to turn the regulators off * Malloc application benchmarking (2/10, TCWG-441) - Add pdf library benchmark to benchmark suite - Improve argument parsing and result plotting - Seem to be hitting some new issue with mounting memory cgroup within docker == Issues == * None == Plan == * Iron out issues with malloc benchmark framework * Get Chromebook booting -- Will Newton Toolchain Working Group, Linaro

10 years, 10 months

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[ACTIVITY] Week 33

by Renato Golin

== Progress == * Benchmarks (CARD-716 2/10) - Wrapping up SPEC run, some results - Fix missing tests, running with -ffast-math * Toolchain (CARD-862 4/10) - A few more assembler fixes - http://llvm.org/PR20462 - http://llvm.org/PR20595 - Some vectorizer cleanups - http://llvm.org/PR20655 * Background (4/10) - Code review, meetings, discussions, etc. - Trying D01s again as buildbots == Plan == * Pick some more toolchain bugs to work on * Release 3.5 tests and benchmarks * Move bots to CMake, enable compiler-rt * Change compilation to make Clang/LLVM non-NEON by default * Enable D01s as buildbots

10 years, 10 months

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[ACTIVITY] Week 33

by Zhenqiang Chen

== Issues == * None. == Progress == * Update "Keep constants in register when expanding" patch according to comments (TCWG-486, 3/10). * Refine ccmp patches since the old ones can not apply (TCWG-488, 2/10). * Check PR62151, it was exposed by my commit r211885. But the root cause was r208165. * R/M toolchain related work (5/10) == Plans == * Ping pending patches. == Planed leaves == * Aug. 18 - 26.

10 years, 10 months

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configure: error: Link tests are not allowed after GCC_NO_EXECUTABLES

by Črt Gorup

Hi, I am trying to build a working environment with Angstrom Linux, QT5 for Toradex Apalis iMX6 module and additional QT5 SDK for my host machine. The compilation of Angstrom with additional QT5 layer went fine. However, there are some problems when building toolchain for the host machine (command meta-toolchain-qt5). It seems that there is a problem with configuration of linaro gcc runtime 4.8. The reported error is: "checking dynamic linker characteristics... configure: error: Link tests are not allowed after GCC_NO_EXECUTABLES". The log file is in the attachment. Does anyone have any idea how to fix this problem? I am using Ubuntu 14.04. Thanks in advance, Crt Gorup

10 years, 10 months

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Linaro arm-linux-gnueabihf-gdb versus Ubuntu gdb-multiarch

by ssinfod ssinfod

Hello, I'm trying to perform cross platform remote debugging from my x86 computer to a remote ARM device. (ex: Beagle Bone Black) I'm using Ubuntu 14.04 and Eclipse CDT. I installed the Ubuntu package gcc-arm-linux-gnueabihf but the gdb debugger is not in that package. Therefore, I'm wondering if I should use the Linaro toolchain (which include arm-linux-gnueabihf-gdb) or if I should install the Ubuntu gdb-multiarch package. What is the difference between gdb-multiarch and arm-linux-gnueabihf-gdb ? Is it better to use gdb-multiarch ? Thanks ssinfod

10 years, 10 months

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[ACTIVITY] 4 - 8 August 2014

by Omair Javaid

== Progress == BeagleBoard and Pandaboard setup for gdb testing [3/10] * Deployed debian linux on both boards * Installation of required packages for gdb testing * Run gdb native tests on Beagleboard, Pandaboard and Chromebook Arm gdb record-replay bug fix [6/10] [TCWG-314] * Applied previous asimd and vfp patches and test for failures * Fixed exception due to a bug in previous patches with latest trunk. * Fixed issues with solib trampoline code when stepping in reverse. Miscellaneous [1/10] * In pursuit of deploying linux on boards dd,ed my hard drive by accident and spent some time re-installing my desktop. == Plan == Arm record-replay bug fix [TCWG-314] * Test bug fixes with all previous patches and resubmit. Update and Submit Aarch64 record replay patches. Resume work on Aarch64 prologue analysis.

10 years, 10 months

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[ACTIVITY] 4th - 8th August 2014

by Bernie Ogden

=Progress= cbuild2 benchmarking- TCWG-360 [6/10] * Existed patches tidied up and gerritified * A few drive-by bugfixes * Cross-building support added and also gerritified lowlevellock patch [1/10] * Resubmitted bugfix, reacted to review * Some wrestling with space-mangling evil in mail clients Meetings/mail/etc [3/10] =Plan= Holiday Tuesday afternoon cbuild2 benchmarking * Get remote targets working * Maybe look at results gathering

10 years, 11 months

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[Weekly] 04-08 AUG 2014

by Michael Collison

== This week == * Linaro bugzilla 331 - [4.9 Regression] ICE in final_scan_insn, at final.c:2952 [4/10] - Triaged and investigating * Linaro bugzilla 307 - [Linaro 4.8] ICE in change_address_1, at emit-rtl.c:2019 [1/10] - Unable to validate. Further investigation before closing * TCWG-515 - Neon intrinsic bug testing [5/10] - Linaro Infrastructure headaches and setup. - May split into several blueprints targeting two to three tests - Require assistance debugging DejaGnu script error preventing some tests from running == Next week == - Continue with Neon intrinsic testing - Continue investigation into resolution for Linaro bugzilla 331

10 years, 11 months

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[ACTIVITY] Aug 4-10

by Rob Savoye

== Progress == * Fixed aarch64_be-none-elf builds and cross tests. (2/10) * Forked ancient RSH support in DejaGnu to be more SSH aware. SSH is now takes 1/4 of the time it used to for each remote execution test case. (TCWG 512 - 4/10) * Stabilized new ZSSH protocol in DejaGnu, also much faster than the current RSH/SSH support. (TCWG 512 - 3/10) * Meetings and Misc. (1/10) == Plan == * Get my D01 board working finally, since I killed my Odroid U2. * Review benchmarking patches. * Do more thorough testing of SSH performance improvements.

10 years, 11 months

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[ACTIVITY] 4 August - 8 August 2014

by Venkataramanan Kumar

== Progress == * TCWG-180 Debugging - LTO bootstrap failure in Aarch64 with GCC 4.9. (6/10) Tried to recompile object files that showed differences in GCC trunk on amd64 machine.It turned out that GCC make system always builds LTO files in “gcc” directory and uses prev-gcc/xg++ to build them. No differences when building stage2 and stage3 objects under same directory “gcc” in FSF trunk. Doing the same experiment with gcc 4.9 branch shows failure both in x86_64 and aarch64. Communicated the issue to Richard Beiner. Got some feedback on debugging from Honza and Richard. Tried passing –save-temps to BOOT_CFLAGS using FSF trunk, getting assembler errors. Need to come back to this problem after finding root cause. Read about LTO passes and wpa (partitioned ) vs non portioned mode. * Others (2/10) * Upstream patch review. * 1-1 Meeting Christophe. * Misc and internal meeting. * setup LLVM. * Friday off (2/10). == Plan == * Continue LTO bootstrap issue. * Benchmark Core mark with LTO. * Upstream patch review. == MISC == * National holiday on 15th August .

10 years, 11 months

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