- linaro-toolchain - lists.linaro.org

[ANNOUNCE] Linaro GCC 4.9 2014.07 released

by Yvan Roux

The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2014.07 stable release of the Linaro GCC 4.9 source package. Linaro GCC 4.9 2014.07 is the fourth Linaro GCC source package release in the 4.9 series. It is based on FSF GCC 4.9.1+svn212419 and includes performance improvements and bug fixes. 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 approaches version 4.9.1. The Linaro TCWG will provide monthly stable[1] source package releases until FSF GCC 4.9.1 is released. At that point Linaro GCC 4.9 will merge in FSF GCC 4.9.1 and, release Linaro GCC 4.9.1, and then return to a schedule of stable quarterly releases and monthly engineering[2] releases. Interesting changes in this GCC source package release include: * Updates to GCC 4.9.1-pre+svn212419 * Backport of [AArch32] Wrap long literals in HOST_WIDE_INT_C in aarch-common.c * Backport of [AArch32] Rewrite TLC Intrinsics. * Backport of [AArch32] Remove vzip, vuzp, vtrn builtins and cleanup * Backport of [AArch32] Use enum name instead of integer value for PARAM_SCHED_PRESSURE_ALGORITHM. * Backport of [AArch32] Vectorise bswap* * Backport of [AArch32] Fix PR/61331 * Backport of [AArch32] Fix PR target/61154 * Backport of [AArch32] Use mov_imm type for movw operations consistently * Backport of [AArch32] Remove XFmode from ARM backend. * Backport of [AArch64] Rewrite REV Intrinsics. * Backport of [AArch64] Implement HARD_REGNO_CALLER_SAVE_MODE. * Backport of [AArch64] Support tail indirect function call. * Backport of [AArch64] Fix stack protector for ILP32 * Backport of [AArch64] ILP32 dynamic linker * Backport of [AArch64] Correct signedness of builtins, remove casts from arm_neon.h * Backport of [AArch64] clarify stack layout diagram * Backport of [AArch64] Implement movmem for the benefit of inline memcpy * Backport of [AArch64] Fix REG_CFA_RESTORE mode. * Backport of [AArch64] Fix layout of frame layout code. * Backport of [AArch64] Fix some reg-to-reg move scheduler types. * Backport of [AArch64] Implement CRC32 ACLE intrinsics + testsuite. * Backport of [AArch64] Implement ADD in vector registers for 32-bit scalar values. * Backport of [AArch32/AArch64] TARGET_ATOMIC_ASSIGN_EXPAND_FENV AArch64 * Backport of [AArch32/AArch64] Use signed chars in gcc.dg/pr60114.c. * Backport of [AArch32/AArch64] Rewrite UZP Intrinsics. * Backport of [AArch32/AArch64] Rewrite TRN Intrinsics. * Backport of [AArch32/AArch64] Rewrite EXT Intrinsics. * Backport of [genattrtab] Fix memory corruption, allocate enough memory for all bypassed reservations * Backport of Fix PR c/60114 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.

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[ACTIVITY] 7 - 11 July 2014

by Will Newton

== Progress == * More work on launchpad bugs (3/10) - Moved gdb bugs over to bugzilla and closed down Launchpad tracker - Found secret location of Linaro eglibc bugs in Launchpad! - Triaged, moved, closed as many bugs as possible, some still remain * Respin of binutils 2.24 2014.07 release (1/10) * Get binutils ARM testsuite all passing on EABI, mostly on OABI (2/10) * glibc patch review and build warning fixes (2/10, CARD-341) * Annual leave on Friday (2/10) == Issues == * None == Plan == * 4 days in Berlin * Travel to Cauldron -- Will Newton Toolchain Working Group, Linaro

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linaro prepackaged binary for aarch64 static libfdt.a?

by Claudio Fontana

Hello Will and list, do you have a prepackaged static libfdt.a for aarch64? I think it's part of some of the released images you provide, but maybe you have it also available as a single package? Thank you, Claudio

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[ACTIVITY] July 7-13

by Maxim Kuvyrkov

== Week of July 7th == - Continued working on toolchain testing improvements (CARD-1378, 6/10) -- Further Jenkins fixes and improvements -- Various bits of build farm administration -- Investigated feasibility of [really] remote cross-testing -- yes, it is feasible! - STREAM performance regression (TCWG-388, 2/10) -- Resumed patch submission (now that testing is working much better) - Various meetings and discussions (2/10) -- Maxim Kuvyrkov www.linaro.org

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[ACTIVITY] June 30-6

by Maxim Kuvyrkov

== Week of June 30th == - Continued working on toolchain testing improvements (CARD-1378, 6/10) -- Troubleshooted Jenkins jobs -- Various cbuild2 improvements - Migrated master VM of TCWG dev environment to AWS (2/10) -- It is now at tcwg-dev-env-master.linaro.org - Various meetings and discussions (2/10) -- Attempted to test QEMU's aarch32 crypto support -- Organized travel for GCC GSoC student to GNU Tools Cauldron. Thanks Linaro for providing sponsorship for this! -- Maxim Kuvyrkov www.linaro.org

11 years, 1 month

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[ACTIVITY] July 7th - 11th

by Bernie Ogden

=Progress= memcpy regression on A9 - TCWG-390 [6/10] * Not down to the branch predictor after all * Can be fixed for A9 with explicit pld, but this isn't free cbuild2 benchmarking - TCWG-360 [1/10] * Dug out my branch, merged in trunk, refreshed memory Meetings/mail/etc [3/10] * Including a little patch review for Roland's lowlevellock.h (TCWG-435) =Plan= Close TCWG-390 as wontfix Lots more cbuild2 benchmark automation Keep up with lowlevellock.h

11 years, 1 month

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[ACTIVITY] 07-11 JULY 2014

by Venkataramanan Kumar

== Progress == * Recovered from flu on leave 7th and 8th July (4/10) =LTO bootstrap -tcwg180 (2/10)= Git bisect experiments shows bootstrap compare errors apprearing and disappearing at trunk at different revisons. Alteast 3 revisons LTO bootstrap passes r210740 2488876068f541a341472c3aeedadccc255f0696 PASS r210854 271fe9cf111f6b581451bbfb4d346757877896cd PASS r210973 487fea840105dbb0ff516b797e7d86bea82ef74a PASS It is hard to do backport of revisons which fixes this bug. Need to discuss with LTO people in GCC mailing list =Reload spill fix -tcwg180 (2/10)= Emailed my status on benchmarking https://gcc.gnu.org/ml/gcc-patches/2014-07/msg00450.html This bug cannot be fixed without performance degradation. So if it cannot be up streamed, the reporter can use the patch to build his package atleast. Planning to close this bug if I did not receive any comments from maintainers. =Misc (2/10)= * GCC internal team meeting * Meeting with Ryan == Plan == * Benchmark coremark -O3 vs -O3 -flto. * Email to marcus on ABI for large memory model in Aarch64. * Cauldron preparation. == Planed leaves == * Jul 18- 25: Travel to Cambridge.

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[ACTIVITY] 7-11 July 2014

by Kugan

== Progress == - 8th and 9th on holiday (4/10) - Zero/sign extension elimination (TCWG-291) 3/10 * Patch one is accepted * Posted the modified patch 2 after some discussions * Started analysing the code generated for coremark and spec2k * Looks there are more places that can be improved. I will post additional patches after completing it - Launchpad bugs (3/10) * https://bugs.launchpad.net/gcc-linaro/+bug/1320965 * https://bugs.launchpad.net/gcc-linaro/+bug/1331112 == Plan == - sha1 regressions - 15th and 16th on holiday

11 years, 1 month

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[ACTIVITY] Week 28

by Zhenqiang Chen

== Progress == * One day off. * Test and send out the local NLS patch for community review (1/10). * Test ccmp patches. Can not reproduce a FAIL in previous regression test with the latest trunk(TCWG-488, 1/10). * Test codes to skip arm_split_constant (TCWG-486, 3/10). Performance results seam OK for spec2000, coremark dhystone and eembc. * R/M toolchain related work (3/10). == Plans == * Ping pending patches. * Update ccmp patches. == Planed leaves == * Jul. 15 - 25: Travel to Cambridge. * Aug. 4 -8: Annual leaves.

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[Weekly] 07-11 JULY 2014

by Michael Collison

== This week == Provide ldp/stp peephole optimization for Aarch64 [TCWG-446] [0/10] - Halted development due to duplicate ARM development project by Bin Cheng Launchpad 1318831 - Invalid unpoisoning of stack redzones on ARM [3/10] - Verifying test results Launchpad 1267761 - miscompilation of unsigned comparison on aarch64 [2/10] - Testing under way on Jenkins Neon intrinsic tests [4/10] - background work to gain familiarity with effort Misc Meetings [1/10] == Next week == - Verify testing on Launchpad 1267761 and 1318831 - Begin investigating compiler bugs discovered by neon intrinsic tests == Future ==

11 years, 1 month

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[ACTIVITY] 7-11 July 2014

by Christophe Lyon

== Progress == * GCC trunk cross-validation - reported a few regressions * Automation Framework (2/10) - looked at Jenkins configuration & logs of some failures * AArch64 libsanitizer (1/10) - tried to use cbuild2 in the lab to build & test on HW, but all my build attempts failed for various reasons * Neon intrinsics tests (3/10) - feedback from upstream requests some renaming changes + GNU coding style fixes - since reformating the existing testsuite is a manual and error-prone task, it will bring additional delay in improving GCC testsuite. - it's probably more efficient to run the existing tests regularly and start reporting & fixing the bugs identified, not waiting for the full conversion - updated the existing tests for fp16 and poly* types support with GCC (reference built with armcc) - interestingly, compiling the original testcases with armcc for aarch64 caused ICE on 28 source files. * Misc (meetings, conf-calls, ....) (4/10) == Next == Holidays for 2 weeks

11 years, 1 month

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[ACTIVITY] Week 28

by Renato Golin

== Progress == * Monday holiday * Automation Framework (CARD-1378 6/8) - TCWG D01 moved in, Chromebooks out - Movng LLVM buildbots to D01s - D01s have no NEON support... :S - We might have to move some Chromes back in - Moving hackboxes to Chromebook 2s * Background (2/8) - Code review, meetings, discussions, etc. == Plan == * Deal with NEON issue in the rack * Finish Cauldron presentation * Try to get the D01s as buildbots, even without NEON

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[ACTIVITY] 30 June - 4 July 2014

by Omair Javaid

== Progress == * AArch64 GDB reverse watchpoints issue. [TCWG-503] [4/10] -- Found a new fix in generic process record implementation. Testing stalled by too many 2500 failures seen on arm-linux-gdb in general and some 850 record/replay implementation. * AArch64 GDB handling of functions with empty prologue. [TCWG-504] [4/10] -- Analysis of prologue generated by aarch64-gcc -- Make an understanding of code implementation for arm-linux-gdb. -- Try to reproduce reported bugs. * Testing and Analysis of testsuite failures in arm-linux-gdb [TCWG-509] [1/10] * Browsing gdb related upstream discussions. [1/10] == Plan == * AArch64 GDB reverse watchpoints issue. [TCWG-503] -- Test and submit fix for target record for the case where we cant step breakpoints. * Investigate issues in arm-linux-gdb testsuite results. [TCWG-509] * Travel preparations to UK for Tools cauldron and TCWG sprint. -- Obtain health certificate for international travelers. * On Holiday from 14th to 17th July 2014.

11 years, 1 month

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[ACTIVITY] June 30th - July 4th

by Bernie Ogden

=Progress= memcpy regression on A9 - TCWG-390 [7/10] * Tweaked bench.py some more * Cobbled together a bare metal version of cortex-strings benchmark * Was surprised to find that the problem does not relate to Linux * Have some evidence that points at the branch predictor Meetings/mail/etc [3/10] =Plan= See if A9 performance is recoverable without sacrificing other targets Push some of my improvements into the cortex-strings repo Possibly write up my cortex-strings-benchmarking-in-lava method Back to cbuild benchmark automation

11 years, 1 month

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[ACTIVITY] Week 27

by Yvan Roux

== Issues == * TCWG build machine disks start to be full. == Progress == * TCWG-496 : Linaro GCC 4.9 2014.07 (5/10) - Still worked on backports validation. - Manual/Jenkins/cbuildv2/schroot validation and results comparison. * Misc: (5/10) - Various meetings. - Office relocation == Next == * FSF branch merge for 2014.07 * Complete validation and backports.

11 years, 1 month

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[ACTIVITY] 30 June - 4 July 2014

by Kugan

== Progress == Zero/sign extension elimination (TCWG-291) 10/10 - Patch updated based on review comments. - Regression tested with standard set-up - Created test-cases. - Set-up additional architectures for validation * aarch64-none-elf --with-abi=ilp32 (Foundation model) * aarch64-none-linux-gnu --with-abi=ilp32 seems to be broken. * Set-up qemu based s390x-ibm-linux * Tried x86_64-linux -mx32 but ran into many issues. - Patch now waiting for s390x-ibm-linux. All others are OK. - will post once the results are available == Plan ==. - Spec2k regressions - sha1 regressions - 8th and 9th on holiday.

11 years, 1 month

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[Weekly] 30 JUNE -04 JULY 2014

by Michael Collison

== This week == Provide ldp/stp peephole optimization for Aarch64 [TCWG-446] [6/10] - Investigated options for improving ldp/stp pairing and developed patch - Testing underway Launchpad 1267761 - miscompilation of unsigned comparison on aarch64 [1/10] - Backported revision 206529 from trunk - Testing under way on Jenkins Launchpad 1296942 - marked fixed released based on backport by Yvan Roux [1/10] - July 4th holiday [2/10] == Next week == Complete testing on Launchpad 1267761 and TCWG-446 and initiate code review == Future == Travel to Cambridge on July 11th for Cauldron and TCWG Spring

11 years, 1 month

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[ACTIVITY] Week 27

by Zhenqiang Chen

== Issue == * None. == Progress == * Enable binutils plugins for Linaro crosstool-ng samples (lp: 1335316). * Update ccmp patches (TCWG-488, 5/10) - Update two ccmp patches according to comments - Enhance the patch to handle cmov instructions. * Constant optimization (TCWG-486, 2/10): Logs show most negative constants used in logic operators (AND, IOR and XOR) are UNSIGNED before expand. * Loop2_invariant heuristics tune (TCWG-469, 1/10). Update and committed a patch @r212256. * R/M toolchain related work (2/10). == Plans == * Ping pending patches. * Continue on constant optimization.

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[ACTIVITY] 30 June - 4 July 2014

by Christophe Lyon

== Progress == * Released gcc-linaro-4.7-2014.06 final (1/10) * GCC trunk / 4.9 branch (2/10) - reported regressions - tested a preprocessor patch from Dodji (after his previous version broke trunk build on ARM/AArch64*linux targets) - fixed bugs in comparison script * Neon intrinsics tests: (1/10) - handled feedback & resent updated patches - approved by Ramana for AArch32, waiting for AArch64 maintainer approval * cbuilvd1 scheduler (1/10) - restarted Calxedas - started looking at its implementation - removed some obsolete jobs * cbuildv2 / jenkins - cloned Schroot project to benefit from its stability and use the same build matrix as BuildFarm * Misc (mettings, conf calls) (3/10) * Internal (meetings, office relocation) (2/10) == Next == * Neon intrinsics tests * AArch64 libsanitizer * GCC-trunk cross validation follow-up * cbuildv1 scheduler investigation and documentation == Future == * Holidays July 12th-27th

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Re: Bug#727621: armel: std::future appears to be broken?

by Matthias Klose

Am 05.07.2014 17:36, schrieb Emilio Pozuelo Monfort: > Control: reassign -1 gcc4.8,gcc4.9 > > Hi, > > This is still a problem with GCC 4.9. Is there any progress on this? This is > making aegisub FTBFS on armel, blocking the libass transition. afaik, no. See also https://gcc.gnu.org/ml/gcc/2014-07/msg00000.html

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[ACTIVITY] Week 27

by Renato Golin

== Progress == * Toolchain (CARD-862 2/9) - Investigating LLD, MCLinker * Automation Framework (CARD-1378 4/9) - Lots of validation and lab meetings - Planning and designing a new rack: - Replace all chromebooks with D01s * Background (3/9) - Code review, meetings, discussions, etc. - A bit more on Cauldron's presentation - Revamping LLVM plan, TCWG mission, Validation docs * Some illness... == Plan == More rack stuff... Monday holiday.

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[ACTIVITY] 30 June - 4 July 2014

by Will Newton

== Progress == * Patch review, testing and follow-up (3/10, CARD-341) - glibc 2.20 freeze still not announced - submit more warning fix patches - reviewed series of gdb thumb prologue patches * Get postgresql malloc benchmark using unix domain sockets (2/10, TCWG-441) * Built releases of eglibc and binutils for 2014.07 (3/10) * Started looking at moving binutils and gdb bugs in launchpad to bugzilla (1/10) * Other small things (1/10) - Investigated a couple of other small issues for various people - Meetings == Issues == * None == Plan == * Clear up more old bugs and move to bugzilla/JIRA/upstream * malloc benchmarking * glibc patches -- Will Newton Toolchain Working Group, Linaro

11 years, 1 month

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URGENT: Cant build linaro toolchain : exact commands

by -- --

11 years, 1 month

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[ANNOUNCE] Linaro GCC 4.7 2014.06 released

by Christophe Lyon

The Linaro Toolchain Working Group is pleased to announce the 2014.06 release of Linaro GCC 4.7. As announced at Linaro Connect USA 2013 Linaro GCC moved to a pattern of quarterly stable releases, with engineering releases in the intervening months. This is the third stable release, and contains no known regressions compared to the 2014.04 release. Linaro GCC 4.7 2014.06 is the twenty forth release in the 4.7 series. Based off the latest GCC 4.7.5+svn211571 release, this is the eleventh release after entering maintenance and the final one. Interesting changes include: * Updates to GCC 4.7.4+svn211571 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@linaro.org

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[ACTIVITY] 23 - 27 June 2014

by Omair Javaid

== Progress == * AArch64 GDB reverse watchpoints issues. [TCWG-503] [6/10] -- Proposed a fix which failed testing now working on an alternate fix in gdb process record target implementation. * Further progress on AArch64 GDB handling of functions with empty prologue. [TCWG-504] [2/10] -- Analysed different type of obj files and how they are being handled by gdb. * Investigate and improve ARM gdb frame unwinding [TCWG-157] [1/10] -- Try to reproduce reported bugs. * Miscellaneous [1/10] -- Setting up gdb remote testing with hackboxes. -- Meetings etc. == Plan == * AArch64 GDB reverse watchpoints issue. [TCWG-503] -- Figure out a new fix in gdb process record implementation, test it and then justify it. * AArch64 GDB handling of functions with empty prologue. [TCWG-504] -- Further investigation.

11 years, 1 month

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[ACTIVITY] June 23 - 27

by Bernie Ogden

=Progress= memset performance improvement - TCWG-156 [2/10] * Bugfixed/improved cortex-strings-bench-on-lava memcpy regression on A9 - TCWG-390 [6/10] * Scanned through lots of data * Learned some perf and some streamline * Still don't know what's going on here lowlevellock performance bugs - TCWG-435 [0/10] * Stalled until someone reacts to my pings Meetings/mail/etc [2/10] * Including some questions about whether we need softfloat support in binary releases =Plan= Keep prodding at memcpy with perf/streamline Explore repeatability of cortex-strings benchmark See how much quicker I can make cortex-strings benchmark without compromising repeatability Possibly try out a bare metal version of (a subset of) cortex-strings benchmark

11 years, 1 month

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[ACTIVITY] June 23 - 27

by Charles Baylis

* Analysis of PR61411 (CARD-341) [2/10] * Attempted to analyse VP8 decode performance on Aarch64 vs Aarch32 (TCWG-?) [6/10] . took a while to find compatible libvpx source and compilers :( . can't find a good way to profile on Aarch64, perf is broken, gprof results look implausible * Misc [2/10]

11 years, 1 month

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[ACTIVITY] Week 26

by Yvan Roux

== Issues == * None == Progress == * respin Linaro GCC 4.9 2014.06 (3/10) - Merged FSF 4.9 branch which includes the needed Big Endian fixes. - Validated and released Linaro GCC 4.9 2014.06-1 * TCWG-496 : Linaro GCC 4.9 2014.07 (4/10) - Reverted rev 209643 (AArch64 libjava issue). - Backports validation still ongoing. - Looked at Jenkins/cbuildv2/schroot validation issues. * Misc: (3/10) - Various meetings. == Next == * Office relocation planed on Thursday. * Complete validation and backports.

11 years, 1 month

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[ACTIVITY] Week 26

by Zhenqiang Chen

== Issues == * None == Progress == * Take care Linaro binaries release (1/10). * Send out ccmp patches for community review (TCWG-488, 1/10). * loop2_invariants heuristics tune (1/10, TCWG-469). One patch was committed @r212135. * Constant optimization (TCWG-486, 7/10 ) - Try to keep constant in register when expanding. But benchmark results show regression due to combine behavior changes. - Try to keep unsigned constant when expanding. For crc |= 0x8000, crc is unsigned short. If 0x8000 is represented as unsigned value, no need to split 0x8000. But in middle-end, wide_int_storage::set_len and trunc_int_for_mode always do sign extension. "trunc_int_for_mode (INTVAL (op), mode) == INTVAL (op)" is always checked when checking operand (e.g. in general_operand of recog.c). And in RTL, there is no "unsigned" information at all. == Plans == * Update ccmp patches according to comments. * Continue on constant optimization. * Ping pending patches.

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[ACTIVITY] 23 - 27 June 2014

by Kugan

== Progress == * Zero/sign extension elimination (TCWG-15) (10/10) - Posted two patches for review and gone through few iterations - Looked at flag_wrapv and !flag_strict_overflow regressions * ARM (and possibly some other targets) truncates negative values and this makes them incompatible with the value range in SSA. One solution is to ignore any gimple statements that load negative constants when eliminating zero/sign extension elimination. * We also loose the OVF(INF) information in tree when they are converted to wide_int and propagated to SSA. - Testing on a target that support PTR_EXTEND * Trying to set-up x86_64-linux with -mx32. Still not able to compile as I am getting various errors in glibc. Looking into it, == Plan == * Upstream zero/sign extension elimination activities

11 years, 1 month

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[Weekly] 23-27 JUNE 2014

by Michael Collison

== This week == Bug fixing: - Provide ldp/stp peephole optimization for Aarch64 [TCWG-446] [2/10] - Backported Launchpad 1318831 - Invalid unpoisoning of stack redzones on ARM [2/10] Investigation: - Launchpad 1267761 - miscompilation of unsigned comparison on aarch64 [3/10] Launchpad cleanup (3/10) : Bugs marked fix released: - Launchpad 1065509 - tetgen ftbfs in quantal on armhf using Linaro GCC 4.7 Bugs marked cannot reproduce: - Launchpad 1312931 - gcc 4.8 internal compiler error: in add_stores, at var-tracking.c:5918 Bugs marked incomplete: - Launchpad 1309122 - internal compiler error: in optimize_sc, at modulo-sched.c Bugs marked won't fix - Launchpad 1299354 - Floating Point Errors with Linaro GCC 4.7.3 - Launchpad 640521 - Incorrect function prologue with Thumb-1 high register variable == Next week == Launchpad 1267761 - miscompilation of unsigned comparison on aarch64 Provide ldp/stp peephole optimization for Aarch64 [TCWG-446]

11 years, 1 month

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[ACTIVITY] June 23-29

by Maxim Kuvyrkov

== Week of June 23rd == - Continued working on toolchain testing improvements (CARD-1378, 6/10) -- Various cleanups and improvements to cbuild2. -- Troubleshooting of Jenkins stability problems. -- Increasing test coverage for arm big-endian toolchains. - Various meetings and discussions (3/10) -- Maxim Kuvyrkov www.linaro.org

11 years, 1 month

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[ACTIVITY] June 16-22

by Maxim Kuvyrkov

== Week of June 16th == - Continued working on toolchain testing improvements (CARD-1378, 6/10) -- Refactored cbuild2's schroot support after Rob's review -- Posted updated patches - Started moving TCWG dev environment master vm to Linaro's AWS (1/10) -- This the the VM from where toolchain64.lava.schroot and maximk.schroot are synchronized. -- Once migrated, all TCWG admins can access it, not just me. - Various meetings and discussions (2/10) -- Maxim Kuvyrkov www.linaro.org

11 years, 1 month

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[ACTIVITY] June 9-15

by Maxim Kuvyrkov

== Week of June 9th == - Continued working on toolchain testing improvements (CARD-1378, 6/10) -- Added support for native testing inside schroot -- Troubleshooting of various problems -- Assisted Yvan in testing of the 2014.06 source release and general fire-fighting - Various meetings and discussions (2/10) - Interviewed 2 potential assignees (1/10) -- Maxim Kuvyrkov www.linaro.org

11 years, 1 month

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[ACTIVITY] 23 - 27 June 2014

by Will Newton

== Progress == * Patch review, testing and follow-up (4/10, CARD-341) - glibc 2.20 freeze upcoming - submit some warning fix patches * Add support for ARM HWCAP2 to glibc (2/10, TCWG-499) * Submit a patch for increasing ld max page size on ARM (1/10) * Reformatted backports spreadsheet for glibc, binutils and gdb (1/10) * Investigated language runtimes (1/10) * Meetings (1/10) == Issues == * None == Plan == * More glibc patch work for the freeze (1st July) * malloc benchmarking -- Will Newton Toolchain Working Group, Linaro

11 years, 1 month

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[ACTIVITY] 23-27 June 2014

by Christophe Lyon

== Progress == * GCC trunk cross-validation (CARD-647) (6/10) - email robot is now working - added list of "ignored" tests when reporting regressions, mainly because they are unstable when run under qemu (threads...) - a57+crypto FPU config looks OK - tried to use "contrib/test_summry" to send results, but that would flood gcc-testresults mailing-list - looked at impact of using CFLAGS/CFLAGS_FOR_TARGET etc upon libstdc++ tests. Needs deeper investigation - robustified scripts to handle more compute farm errors (random "interrupted system call") * AArch64 libsanitizer: no progress this week * Neon intrinsic tests: review started * Misc (meetings, conf-calls, ...) 4/10 - 4.7-2014.06 release done, benchmarks on-going == Next == * GCC cross-validation - look more deeply at the impact of the various CFLAGS (on testsuites results) * Neon intrinsic tests: - handle feedback * AArch64 libsanitzer: resume work * Publish 4.7-2014.06 release

11 years, 1 month

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[ACTIVITY] Week 26

by Renato Golin

== Progress == * Toolchain (CARD-862 1/10) - Testing Compiler-RT on autoconf/ARM - Checking LLD * Automation Framework (CARD-1378 6/10) - Writing script to manage TCWG rack - Testing D01 with new kernel - Testing Chromebook 2 vs. 1 vs. D01 for LLVM - Cleaning up failed Chromebooks - Pointlessly working on beagle bones * Background (3/10) - Code review, meetings, discussions, etc. - Starting the GCC + LLVM presentation == Plan == * continue trying to build compiler-rt with autoconf on ARM * continue working on the LLVM + GCC presentation * initial investigations on lld and MCLinker

11 years, 1 month

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[ANNOUNCE] Linaro GCC 4.9 2014.06-1 released

by Yvan Roux

The Linaro Toolchain Working Group (TCWG) announces the 2014.06-1 release of the Linaro GCC 4.9 source package. This is a respin of the 2014.06 release which fixes some issues on AArch64 big-endian and in AArch64 libjava. Changes in this GCC source package release include: * Updates to GCC 4.9.1-pre+svn211964 * Revert backport of [AArch64] Define TARGET_FLAGS_REGNUM. * Backport of [AArch64] Cost model improvements. Please find the original 2014.06 release notes below: The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2014.06 stable release of the Linaro GCC 4.9 source package. Linaro GCC 4.9 2014.06 is the third Linaro GCC source package release in the 4.9 series. It is based on FSF GCC 4.9.1-pre+svn211054 and includes performance improvements and bug fixes. 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 approaches version 4.9.1. The Linaro TCWG will provide monthly stable[1] source package releases until FSF GCC 4.9.1 is released. At that point Linaro GCC 4.9 will merge in FSF GCC 4.9.1 and, release Linaro GCC 4.9.1, and then return to a schedule of stable quarterly releases and monthly engineering[2] releases. Interesting changes in this GCC source package release include: * Updates to GCC 4.9.1-pre+svn211054 * Backport of [AArch32] PR rtl-optimization/60663 * Backport of [AArch32] Suppress Redundant Flag Setting for Cortex-A15. * Backport of [AArch32] Support ORN for DIMode. * Backport of [AArch32] Optimise NotDI AND/OR ZeroExtendSI for ARMv7A. * Backport of [AArch32] Allow any register for DImode values in Thumb2. * Backport of [AArch32] Initialize new tune_params values. * Backport of [AArch32] Initialise T16-related fields in Cortex-A8 tuning struct. * Backport of [AArch32] Enable tail call optimization for long call. * Backport of [AArch64] TRY_EMPTY_VM_SPACE Change for ILP32. * Backport of [AArch64] Fix TLS for ILP32. * Backport of [AArch64] vrnd<*>_f64 patch. * Backport of [AArch64] Fix possible wrong code generation when comparing DImode values. * Backport of [AArch64] Add a space to memory asm code between base register and offset. * Backport of [AArch64] Fix aarch64_initial_elimination_offset calculation. * Backport of [AArch64] vqneg and vqabs intrinsics implementation. * Backport of [AArch64] Vreinterpret re-implemention. * Backport of [AArch64] Define TARGET_FLAGS_REGNUM. * Backport of [AArch64] Merge longlong.h from glibc tree. * Backport of [AArch64] add, sub, mul in TImode. * Backport of [AArch64] Add handling of bswap operations in rtx costs. * Backport of [AArch64] Fully support rotate on logical operations. * Backport of [AArch64] Use standard patterns for stack protection. * Backport of [AArch64] VDUP Testcases. * Backport of [AArch64] Vectorise bswap[16,32,64]. * Backport of [AArch64] Enable TBL for big-endian. * Backport of [AArch64] Reverse TBL indices for big-endian. * Backport of [AArch64] Relax modes_tieable_p and cannot_change_mode_class. * Backport of [AArch64] Improve vst4_lane intrinsics. * Backport of [AArch64] Rewrite and tests ZIP Intrinsics. * Backport of [AArch64] libitm Enabled. * Backport of [AArch64] Support full addressing modes for ldr/str in vectorization scenarios * Backport of [AArch32/AArch64] rtx costs (FMA, Cortex-A8, ...). * Backport of Fix warning in libgfortran configure script. * Backport of Remove PUSH_ARGS_REVERSED from the RTL expander 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.

11 years, 1 month

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Cannot find build.mk file

by shining_diamond＠mail.com

11 years, 1 month

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[ACTIVITY] 16 - 20 June 2014

by Omair Javaid

Sorry for sending this late this week. == Progress == * Ran gdb testsuite on arm and x86. Investigated failures on arm-native-gdbserver config. [2/10] * Investigate shared library gdb test failures with dejagnu on remote connections. [TCWG-504] [2/10] * Debug AArch64 GDB reverse watchpoints issue. [TCWG-503] [2/10] * Debug AArch64 GDB handling of functions with empty prologue. [TCWG-504] [2/10] * Understand gdb remote vs native feature parity patches. [1/10] [TCWG-263] * Miscellaneous [1/10] -- Setting up chromebook with 14.04 -- Meetings etc. == Plan == * Further progress on AArch64 GDB reverse watchpoints issue. [TCWG-503] * Further progress on AArch64 GDB handling of functions with empty prologue. [TCWG-504]

11 years, 1 month

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[Activity] June 16-22

by Rob Savoye

== Progress == * Track down and fix build, testing, and Jenkins issues. (TCWG - 1378 9/10) - Reinstalled everything needed for toolchain build and Jenkins on the repaired chromebooks. - Setup D01 and APM boards for toolchain building and testing, added them to the Jenkins matrix. - Updated qemu to the latest to get aarch32 & crypto support. * Meetings and Misc (1/10) == Plan == * Fix bare metal testing for aarch64. * Continue working with the D01 boards. * Track down and fix build, testing, and Jenkins issues. (TCWG - 1378) == Issues == * Gerrit triggers only build trunk, and not the branch specified in the review request.

11 years, 1 month

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[ACTIVITY] 16 - 20 June 2014

by Will Newton

== Progress == * More work on malloc microbenchmark (5/10, TCWG-160) - Script for plotting results - Analyze performance with SystemTap probe points - Tidy up and submit v3 * Further work on ld issue on master (1/10, CARD-341) * Patch review and testing (2/10, CARD-341) * Annual leave on Friday (2/10) * Still no luck on getting Ubuntu on wg boards == Issues == * None == Plan == * Make sure we have everything we need for glibc freeze at month end * malloc app benchmark work -- Will Newton Toolchain Working Group, Linaro

11 years, 1 month

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How to build linaro crosscompiler

by -- --

11 years, 1 month

3
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[ACTIVITY] 16 - 20 June

by Bernie Ogden

=Progress= memcpy regression on A9 - TCWG-390 [6/10] * cortex-strings benchmarks suggest this isn't just an outlier, nor entirely about preload * Quick test on A15 suggests a similar (less severe) issue * Got cortex-strings benchmarks more-or-less running via lava memset performance improvement - TCWG-156 [1/10] * GNU benchtests not as repeatable as hoped lowlevellock performance bugs - TCWG-435 [1/10] * Converted a bunch of inline functions into macros for coldfire Meetings/mail/etc [2/10] =Plan= Carry on generating memcpy data, develop some hypotheses Bugfix lava-ization of cortex-strings benchmarks as & when Explore repeatability of cortex-strings benchmark See how much quicker I can make cortex-strings benchmark without compromising repeatability Try to get lowlevellock.h committed for at least arm/aarch64

11 years, 1 month

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[ACTIVITY] 16 - 20 June

by Venkataramanan Kumar

== Progress == * TCWG-418 : Bug fix Reload spill failure (3/10) Bench marked coremark – no degradations with patch. CPU2000 runs – Workedon running them as native in chromebook. Issues with space. * TCWG-181 : LTO enablement (3/10) GCC 4.9 FSF no ICE . Linaro 14.07 release has ICE. GIT bisect experiments on trunk on Aarch64 hardware. * Misc: (2/10) - Various meetings . - PGO bootstrap runs on Aarch64 hardware - pass. * AMD team out on 19th (2/10). == Next == * GIT bisect experiments on LTO bootstrap. * Continue Benchmark reload spill failure fix * Explore on Large memory model support for aarch64 * Cbuildv2 release packaging on native.

11 years, 1 month

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[ACTIVITY] Week 24

by Yvan Roux

== Issues == * None == Progress == * TCWG-496 : Linaro GCC 4.9 2014.07 (8/10) - Backported all the identified needed trunk revisions. - All the patch reviews are OK. - Validation ongoing - Looked at Jenkins/cbuildv2/schroot validation issues. * Misc: (2/10) - TCWG-444 : Final Linaro GCC 4.7 release o Reviewed and approved FSF branch merge. - Various meetings. == Next == * Complete validation and backports.

11 years, 1 month

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Reg. Error during binutils build

by Gopalasubramanian, Ganesh

I got an error while trying to build the latest Linaro-binutils source (http://releases.linaro.org/14.06/components/toolchain/binutils-linaro/binut…). ../bfd/bfd.h:304:75: error: right-hand operand of comma expression has no effect [-Werror=unused-value] #define bfd_set_section_userdata(bfd, ptr, val) (((ptr)->userdata = (val)),TRUE) Found that the error is already resolved in FSF trunk (https://sourceware.org/ml/binutils/2014-01/msg00334.html). Is that on cards for backport? Regards Ganesh

11 years, 1 month

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[ACTIVITY] 16-20 June 2014

by Kugan

== Progress == * Benchmarking and regression testing (TCWG-468) (3/10) - More aarch64 spec2k benchmarking of patches and against fsf 4.9 release - Spec2k a15 benchmarking on chromebook * Zero/sign extension elimination (TCWG-15) (5/10) - Fixed regressions found and broke the patch into two - Looking at improving zero/sign extension elimination as it is not happening for one test-case now - Plan to benchmark the changes and post for review once this is done. * LP spec2k regression bugs (2/10) - #1320965 : Cant reproduce ICE but goes into infinite loop with -floop-interchange at -O3; Looking into it -#1330725 : Invalid as -fno-strict-overflow is needed for 254.gap. == Plan == * Benchmarking and spec2k bugs. * Upstream zero/sign extension elimination activities.

11 years, 1 month

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[ACTIVITY] Week 25

by Zhenqiang Chen

== Issues == * None. == Progress == * loop2-invariant heuristics tuning (TCWG-469, 2/10). Two patches were committed @r211818 and r211885. Another two are in review. * Test the rebased ccmp patches (TCWG-488, 2/10). * Send out a patch to enhance cprop pass by checking rtx_cost. Collect benchmark results and update the patch according to comments (TCWG-486, 6/10). == Plans == * Ping pending patches. * Continue on patches to optimize constant in loop.

11 years, 1 month

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[ACTIVITY] 16-20 June 2014

by Christophe Lyon

== Progress == * GCC trunk cross-validation (CARD-647) (5/10) - fixes to email-driven robot, now generating html reports - trouble shooting transcient problems with the compute farm - added a57+crypto FPU configuration, still under test - added libstdc++ reports * AArch64 libsanitizer (TCWG-58) - Started looking at results. Different errors when running on HW and under QEMU (where it goes in an infinite loop) * Misc (meetings, conf-calls, ...) 3/10 - 4.7-2014.06 branch merge completed. - 4.9 backports reviews - trouble shooting connexion to tcwgXXX boards == Next == * GCC cross-validation - more fixes and enhancements - continue testing of the email robot * Neon intrinsic tests: - discuss with upstream * AArch64 libsanitizer: - investigate generated code and cause for infinite loop * Make 4.7-2014.06 final release

11 years, 2 months

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