- linaro-toolchain - lists.linaro.org

[ANNOUNCE] Linaro GCC 4.9 2014.10 released

by Yvan Roux

The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2014.10 release of the Linaro GCC 4.9 source package. Linaro GCC 4.9 2014.10 is the seventh Linaro GCC source package release. It is based on FSF GCC 4.9.2-pre+svn216130 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. The Linaro TCWG provides stable[1] quarterly releases and monthly enginering[2] releases. Interesting changes in this GCC source package release include * Updates to GCC 4.9.2-pre+svn216130 * Backport of [AArch64] Define TARGET_FLAGS_REGNUM * Backport of PR target/61565 * Backport of [AArch64] libitm: Improve _ITM_beginTransaction * Backport of [AArch64] Fix *extr_insv_lower_reg<mode> pattern * Backport of [AArch64] Use CC_Z and CC_NZ with csinc and similar instructions * Backport of [AArch32] Implement and vectorize lceil, lfloor, lround optabs with new ARMv8-A instructions * Backport of [AArch64] Improve epilogue unwind info rth * Backport of [AArch64] Add a mode to operand 1 of sibcall_value_insn * Backport of [AArch64] Add a builtin for rbit(q?)_p8; add intrinsics and tests * Backport of [AArch32/AArch64] Schedule alu_ext for Cortex-A53 * Backport of [AArch64] Remove varargs from aarch64_simd_expand_args * Backport of [AArch64] Tidy: remove unused qualifier_const_pointer * Backport of [AArch32/AArch64] Add scheduling info for ARMv8-A FPU new instructions in Cortex-A53 * Backport of [AArch32] Convert FP mnemonics to UAL. * Backport of [AArch32] Enable auto-vectorization for copysignf * Backport of [AArch32][tests] Make input and output arrays 128-bit aligned in vectorisation tests * Backport of [AArch64] Add crtfastmath * Backport of PR target/56846 libstdc++ * Backport of PR target/63209 * Backport of [Ree] Ensure inserted copy don't change the number of hard registers * Backport of [AArch64] Fix force_simd macro in vdup_lane_2 * Backport of [AArch32] Disallow -mfpu=neon for unsuitable architectures * Backport of [AArch32] movmisalign<mode>_neon_load * Backport of [AArch64] Add constraint letter for stack_protect_test pattern * Backport of [AArch64] Auto-generate the "BUILTIN_" macros 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 bugzilla against GCC product: http://bugs.linaro.org/enter_bug.cgi?product=GCC * 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, 6 months

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Q about using AArch64 gdb with target running in AArch32 state

by Qu, Strong

Hi, I start to use Linary AArch64 toolchain recently and just joined this maillist. I went through some of the archived threads but didn't read all of them. So bear me if I'm asking dumb question or old question which had been answered before. For our use case, we are running the gdb client at early state of boot. So the ARMv8 target might be running into any EL and into either AArch64 or AArch32 state. My questions are: 1) Is the aarch64-none-elf-gdb.exe good for both AArch64 and AArch32 or I have to run the arm-none-eabi-gdb.exe if the target running in AArch32 state? 2) If the target is in AArch64 state, can I use the aarch64-none-elf-gdb.exe to load binary built for AArch32 to the target? I'm really appreciated if anybody can help me on these two questions. Thanks in advance, StrongQ

11 years, 6 months

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[ACTIVITY] 13th - 17th October

by Bernie Ogden

cbuild2 benchmarking - TCWG-360 [3/10] * A few small enhancements and bug-fixes * Tried to run spec2006 on Juno, looks tricky libm profiling - CARD-1693 [3/10] * Pulled together lapack + blas * Looked a bit at how it exercises libm on x86 * Tried to look at how it exercises libm on Juno, looks tricky Meetings/mail/etc [4/10] * Featuring some fun with backups and ARM performance review season =Plan= * cbuild2 benchmarking - keep chipping away at spec/juno * libm profiling - attempt to assemble an AArch64 setup that works for me * further performance review/corporate admin will take up extra time this week, but should then fall back to normal levels =Issues= State of the setup on our Junos

11 years, 6 months

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[Activity] Oct 13-19

by Rob Savoye

== Progress == * Part way through integrating Cbuild2/Jenkins with Gerrit. (#1692, 8/10) - Implemented functions to use the REST API to Gerrit via SSH. - Integrated into build and test processes. * Meetings and Misc (2/10) - Ordered 10 Snapdragon boards == Plan == * Finish Gerrit integration with Cbuild2 and Jenkins. (#1692) - Find a way the buildslave user can use the SSH connection to Gerrit. * Start merging the linaro branch in DejaGnu to master to get ready for the next release. * Start getting ready for the lab move, do what I can ahead of time. == Issues == * Gerrit comments via REST strip out all newlines, so I need to limit the message size after a test run.

11 years, 6 months

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[ACTIVITY] 13 October 2014 to 17 October 2014.

by Venkataramanan Kumar

= Progress == * Core mark benchmark and report for PGO and PGO + LTO (TCWG-544) (6/10) Going by CPU cycles adding LTO gains in x86 and degrades in Aarch64 . Looked at hot functions and examining assembly the code generation seems to be same. X86_64 does alignment of code. Also branch misses decreased in X86_64 compared to Aarch64 with -flto + -O3. Also profiled for instruction counts on Aarch64 with linaro compiler. These profiles say that we are executing less instructions with LTO and PGO for Aarch64. * PR 63173- Reproduced the issue and changed the test case to work with trunk. Now Looks like someone else has a patch for it. (1/10). so will work on other bugs. * Misc [3/10] Internal work, emails, AMD meetings and 1-1 with inline manger. 1-1 with Maxim, christophe and 1-1 with ryan == Plan == * Coremark benchmark and profiling. Investigate trunk degradation for O3+ PGO + LTO and report. == leaves == Diwali holiday (22-24)

11 years, 6 months

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[ACTIVITY] Week 42

by Charles Baylis

== Progress == Sick leave [2/10] Patch submission for vldN_lane [1/10] Attempting to run SPEC2k6 on Juno [6/10] Misc [1/10] irc support, openjdk suspected compiler bug, meetings, mailing lists

11 years, 6 months

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[ACTIVITY] Week 42

by Yvan Roux

== Issues == * Still no network at home and will not be fixed before at least one week :( == Progress == * GCC 4.9 2014.10 (8/10) - Merged FSF 4.9 branch - Released Linaro 4.9 2014.10 * Misc: (2/10) - Various meetings. == Plan == * Analyse some failures that occur only in --enable-release.

11 years, 6 months

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[ACTIVITY] 13 - 17 October 2014

by Omair Javaid

== Progress == Catch up with work after return from Eid ul Adha and Annual Holidays [7/10] * Hong Kong visa application * UPS repairs and office cleanup * Catching up with work, gdb roadmap and open/running cards. * Emails/Patch scrolling/Meetings etc * Sick day off on Monday GDB Tracepoints/Fast Tracepoints support on arm [TCWG-480] [3/10] * Getting re-synced with code where I left. == Plan == Further progress on GDB Tracepoints/Fast Tracepoints support on arm [TCWG-480] Investigate possibility of AArch64 trace-point work without availability of hardware. Check for GDB status on ARM and AArch64 vs x86.

11 years, 6 months

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[Weekly] 13-17 OCT 2014

by Michael Collison

== This week == * GCC Modularization Project (5/10) - Reviewed previous documentation by Joseph Meyers - Reviewed source base to understand issues * Linaro bugzilla 602 - gcc 4.7.3 compiler internal error while building hsail components (3/10) - Reproduced with 4.7. Triage indicates coding error (operands reversed) - Continuing investigation to determine if issue exists with 4.8 and 4.9 * Linaro bugzilla 539 - .LTHUNK symbols are surviving (1/10) - Preliminary investigation and triage * Misc. (1/10) - Conference calls == Next week == - Draft plan for GCC modularization for review - Resolve bugzilla 602 - Continue investigation of bugzilla 602 - conduct interview with Prathamesh Kulkarni

11 years, 6 months

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[ACTIVITY] 13 - 17 October 2014

by Kugan

== Progress == * Zero/sign extension elimination with widening types (TCWG-546 - 9/10) - Fixed ICEs and now can build the cross compiler and do the regression testing with qemu - some test-cases are failing due to condition that rely on overflow; this need fixing. - Bootstrapping on AArch64 still fails (but much later than previously). - Verified CRC is optimized * Improve block memory operations by GCC (TCWG-142 - 1/10) - Looked at the changes since the card was drafted == Plan == * Continue with Zero/sign extension pass.

11 years, 6 months

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[ACTIVITY] 13-17 October 2014

by Christophe Lyon

== Progress == * GCC trunk/4.9 validation (CARD-647) (3/10) - committed testsuite patch to test if -shared is supported - forcing -mword-relocations flags when compiling testglue works on my Ubuntu machines, but does not in the Compute Farm RHEL5 servers. - investigating why, all the more as it made me incorrectly report failures in the 4.9 branch * Validation (2/10) - compared cbuild2 schroot-test branch and master the results of this manual run does not seem to match Jenkins results * Neon intrinsics tests (1/10) - fixed .exp harness to support parallelization - looking at how to pre-support fp16, will probably skip it for now, and add dedicated tests later * AArch64 sanitizer (1/10) - GCC trunk seems to need to cherry pick a sanitizer patch when building using recent kernel headers - tried to use Jenkins to build trunk and trunk+cherry-pick, but the results are not consistent needs more investigation * Misc (3/10) - calls, meetings, irc == Next == * GCC trunk/4.9 cross-validation - fix -mword-relocations support - investigate abi_check test * AArch64 sanitizer * Neon intrisics tests update * cbuild2: - analyze previous results (mostly check the logs....) - look at backport-test script + logs Short next week: off Wednesday/Thursday

11 years, 6 months

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[ACTIVITY] 13 - 17 October 2014

by Will Newton

== Progress == * Respin of malloc single-thread optimizations (4/10, TCWG-436) - Create a generic header, include AArch64 in series * Further work on malloc app benchmark framework (4/10, TCWG-441) - Cleaned up, improved reliability, added comments - Committed to cortex-malloc.git * Email, meetings, etc. (1/10) * Upstream work (1/10, CARD-341) - glibc patch review and pings - Look into some bug reports and testsuite failures == Issues == * Electricians and gas engineers turning off power/heating at various points == Plan == * Hopefully get some resolution of single thread atomic stuff for glibc -- Will Newton Toolchain Working Group, Linaro

11 years, 6 months

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[ACTIVITY] Week 42

by Renato Golin

== Progress == * Linux Plumbers (6/10) - Attended conference, Android/Tools/LLVM tracks - Presented 2 talks (GCC+LLVM and LLVM+ARM) * Buildbots (TCWG-76 2/10) - Made the Compiler-RT bot green! Now on to the libc++ one * Background (2/10) - Code review, meetings, discussions, etc. - Internet upgrade, re-wiring the house, building works == Plan == * Add libc++abi buildbot * Follow up on the fpu issues on Clang/asm

11 years, 6 months

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Prebuilt binary download for gcc-linaro 4.8.4

by Rick Liu

Hi, In release 14.08, Linaro GCC 4.8 2014.08 is based off GCC 4.8.4+svn213802. [http://releases.linaro.org/14.08/components/toolchain/gcc-linaro/4.8] However, in toolchain/binaries, [http://releases.linaro.org/14.08/components/toolchain/binaries] I can't find the download for the prebuilt binaries for gcc-linaro-arm-linux-gnueabihf-4.8. I only found the download for 4.9 version. It seems the last 4.8 version binary existed in 2014.04 release only? [http://releases.linaro.org/14.04/components/toolchain/binaries] Where can I get the prebuilt binary of gcc-linaro-arm-linux-gnueabihf-4.8-2014.08_linux.tar.bz2? Thanks, Rick

11 years, 6 months

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Re: [PATCH] ARM: Blacklist GCC 4.8.0 to GCC 4.8.2 - PR58854 (fwd)

by Nicolas Pitre

FYI. The whole thread is available here: http://article.gmane.org/gmane.linux.ports.arm.omap/119412 ---------- Forwarded message ---------- Date: Thu, 16 Oct 2014 01:18:01 +0100 From: Russell King - ARM Linux <linux(a)arm.linux.org.uk> To: Peter Hurley <peter(a)hurleysoftware.com> Cc: Nathan Lynch <Nathan_Lynch(a)mentor.com>, David Laight <David.Laight(a)ACULAB.COM>, Otavio Salvador <otavio(a)ossystems.com.br>, Linus Torvalds <torvalds(a)linux-foundation.org>, Nicolas Pitre <nico(a)fluxnic.net>, Linux OMAP Mailing List <linux-omap(a)vger.kernel.org>, linux-arm-kernel(a)lists.infradead.org Message-ID: <20141016001801.GQ12379(a)n2100.arm.linux.org.uk> Subject: Re: [PATCH] ARM: Blacklist GCC 4.8.0 to GCC 4.8.2 - PR58854 On Wed, Oct 15, 2014 at 06:18:30PM -0400, Peter Hurley wrote: > On 10/15/2014 05:56 PM, Russell King wrote: > > I was in two minds whether to include 4.8.3 as Linaro released a buggy > > toolchain which identifies itself as 4.8.3, but I decided that's also > > a distro problem. IMHO Linaro should really think about taking that > > compiler down given the seriousness of this bug and it being > > indistinguishable from the fixed stock version. > > Maybe it's unfair to blame them; Linaro just took a snapshot and > released what was there. > > If gcc is going to retain the "change release number then add all the > new features" model, some kind of prerelease indicator would help > eliminate this kind of problem. And that indicator should be both > a preprocessor define and parseable from the command line :) My comment is not to attribute blame to them, my comment is entirely on a technical level. My reasoning is that the bug is just as prevalent in userspace, though it will occur less often. Any program which uses signal handlers is a candidate for exactly the same kind of corruption, since you can receive that signal between the point that the stack pointer is modified and the function loads the parent context. Of course, there are ways around that: don't use signal handlers, or if you do, use alternate signal stacks. Neither of those can be guaranteed for any program though. So, let me put this another way: a compiler with this bug is _completely_ unsuitable for use for compiling programs for use under the Linux kernel _as well_ as the Linux kernel itself. The difference is that the Linaro compilers come with an expectation that they are usable on ARM... whereas stock versions cover a lot more and so the ARM arch is probably very small number of their users. Hence why I recommend that Linaro takes down their buggy compiler. Their 4.8.3 version should not be used *anywhere*, just the same as the stock 4.8 to 4.8.2 inclusive should also not be used anywhere on ARM either.

11 years, 6 months

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[ACTIVITY] Week 41

by Charles Baylis

== Progress == Neon vld/vst [4/10] . submitted v2 of vldN_lane patch (respin of patches 1&2 only) . continued ML discussion about patches 3&4. Tried out jenkins/cbuild infrastructure [1/10] . hardest part was getting git.linaro.org/people to hold my test tree . https://wiki.linaro.org/Platform/Systems/GitServer#Creating_new_repositories . if it doesn't work, ask ITS to check you are in the git-users group . still need to find where the results go. bug 403/418 wrong line number on neon error messages [2/10] . experimented with a couple of ways to solve this bug 715 [2/10] . investigated and closed as only affects deprecated old ABI Misc [1/10] == Plan == Benchmark 2014.10 release Continue bug 403/418 work

11 years, 6 months

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[ACTIVITY] 6 - 10 October 2014

by Will Newton

== Progress == * Further work on malloc single-thread optimizations (2/10, TCWG-436) - Still pending some resolution on direction from upstream * Upstream work (1/10, CARD-341) - Patch review - Applied binutils patch for missing AArch64 relocs * Further work on malloc app benchmark framework (2/10, TCWG-441) - Found a possible way to get memory statistics without hacks, should improve speed and reliability of the benchmark framework * Email, meetings, etc. (1/10) * Thursday and Friday annual leave (4/10) == Issues == * None == Plan == * Get malloc app benchmark framework into shape and committed * Figure out direction for malloc single thread optimization work -- Will Newton Toolchain Working Group, Linaro

11 years, 7 months

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[ACTIVITY] 6th - 10th October

by Bernie Ogden

cbuild2 benchmarking - TCWG-360 [7/10] * Fixed/worked around some especially resilient bugs ** Mostly relate to running benchmarks through LAVA, which may be less important in the near future * Wrote a doc * Upstreamed some code that works about as I want it to Meetings/mail/etc [3/10] =Plan= cbuild2 benchmarking * Work through TODO list from connect * Tidy up behaviour on shutdown * Storage issues * (Maybe) persuade a LAVA Juno to work for benchmarking or configure spec Hopefully pick up something else

11 years, 7 months

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[ACTIVITY] Week 41

by Yvan Roux

== Issues == * None. == Progress == * GCC 4.9 2014.10 (6/10) - Completed remaining backports. - Looked at some regression (1 backport reverted) * TCWG 59 : Improve libunwind AArch64 support (1/10) - Reviewed AArch64 patch. * Misc: (3/10) - Various meetings. == Plan == * FSF branch merge and 2014.10 release.

11 years, 7 months

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[ACTIVITY] 6 October 2014 to 10 October 2014.

by Venkataramanan Kumar

= Progress == * Core mark benchmark and report for PGO and PGO + LTO (4/10) More profiling and collected numbers and reported. JIRA card TCWG-181 updated. Adding LTO gains in x86 and degrades in Aarch64 . * Addressed machine bring up issues, debugged and installed necessary packages for both x86 and Aarch64 (1/10) * PR 62308 - Analyzed RTL dumps. Looks to be similar issue solved in trunk. Git bisected and found the passing revision in trunk. posted my comments. waiting for feedback. (2/10) * Misc [3/10] Internal work, emails, AMD meetings and 1-1 with inline manger. 1-1 with Maxim, christophe and 1-1 with ryan Linaro status call == Plan == * Coremark benchmark and profiling for PGO and PGO + LTO. Investigate LTO degradation causes and report. * Investigate PR 63173 * Setup Cbuildv2 build in internal machine. == Issues == Experiencing Hardware connection issues and kernel instability issues with my local machines.

11 years, 7 months

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[ACTIVITY] 6-10 October 2014

by Kugan

== Holiday == * Public Holiday (2/10) * Leave (4/10) == Progress == * Zero/sign extension elimination with widening types (4/10) - Started experimented with a pass for widening type. - Verified for one simple test-case. - Bootstrapping is failing and looking into it. == Plan == * Continue with Zero/sign extension pass.

11 years, 7 months

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[ACTIVITY] Week 41

by Renato Golin

== Progress == * Automation Framework (CARD-1378 1/10) - Planning LAVA server for new TCWG gateway * Buildbots (TCWG-76 7/10) - Fixing Compiler-RT buildbot (from 69 to 4 failures) * Background (2/10) - Code review, meetings, discussions, etc. - Re-testing a change in inst combine that broke bots before - Reviewing CMake builder for Windows builds - Discussing clang-reformat on lld's codebase == Plan == * Continue fixing the Compiler-RT buildbot * Present 2 talks at Linux Plumbers

11 years, 7 months

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[ACTIVITY] 6-10 October 2014

by Christophe Lyon

== Progress == * GCC trunk/4.9 cross-validation (CARD-647) (2/10) - trunk build for aarch64 reported to fail because libsanitizer requires an update. Pinged libsanitizers maintainers but got no answer so far. - posted testsuite patch to test if -shared is supported - managed to find how to force target-dependent -mword-relocations flags to compile testglue, without needing a testuite patch :-) * Validation (3/10) - compared cbuild2 schroot-test branch using (default) shared libs and forcing static libs Using static libs causes many unresolved and unsupported tests - compared using unix.exp and arm-linux.exp: the latter causes creates instability in the results * Neon intrinsics tests (2/10) - rebased on trunk, applied requested changes - the make-check parallelization support has changed mid-September, took some time to discover that my .exp harness was now incompatible. * Misc (3/10) - calls/meetings == Next == * GCC trunk/4.9 cross-validation - continue investigation of abi_check test * Neon intrinsic tests update, trying to take float16 types into account * cbuild2: - compare results + validation time of stable and schroot-test branches - look at backport-test script + logs

11 years, 7 months

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[ACTIVITY] 29th September - 3rd October

by Bernie Ogden

cbuild2 benchmarking - TCWG-360 [7/10] * Cleaned up and upstreamed some code that works * Fixed a couple of issues raised by LAVA people ** No longer scraping the logs ** No longer assuming stable IP addresses lowlevellock.h comments - CARD-341 [1/10] * Respun based on Carlos' comments Meetings/mail/etc - [2/10] =Plan= cbuild2 benchmarking * Upstream code-with-fixes * Write a doc * Invite people to start using this thing ** Assuming that the storage questions get resolved * Work through list of tweaks Get up to speed on glibc vector math thread

11 years, 7 months

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[ACTIVITY] 29 September - 3 October 2014

by Will Newton

== Progress == * Investigate a number of bugs in Linaro toolchain (2/10) - Submitted patches for cbuild build failure with eglibc and i686 - Investigated BZ #675, gdb baud rate issue. Should be fixed by switch to cbuild - AArch64 PIE support seems to be ok? * Submitted a patch to add all missing relocs from AArch64 ABI 1.0 to binutils (1/10) * Email, meetings, etc. (1/10) * More malloc single-thread optimizations (6/10, TCWG-436) - Patches submitted to the list == Issues == * None == Plan == * More atomics work * Tidy up and commit malloc app benchmarks * Out Thursday and Friday for a wedding -- Will Newton Toolchain Working Group, Linaro

11 years, 7 months

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[ACTIVITY] Week 40

by Yvan Roux

== Issues == * None. == Progress == * GCC 4.9 2014.10 (6/10) - Tracked validation issues, Jenkins/Cbuild2 now fixed and usable. - Backported and validated ~30 revisions. - Commits in svn branch ongoing. * TCWG 59 : Improve libunwind AArch64 support (3/10) - Looked at upstream AArch64 patch review request. - Looked at testsuite failures * Misc: (1/10) - Various meetings. - AArch64 Libunwind upstream patch review. == Plan == * Finish backports commits in our FSF svn branch. * FSF branch merge. * Libunwind.

11 years, 7 months

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[ACTIVITY] 29 September - 3 October 2014

by Kugan

== Progress == * LR register not used in leaf functions (TCWG-539) (1/10) Reviewed Jiong's changes. * bug #412 (2/10) - Seems to have been fixed but since there is not specific test-case except that it happens with spec2k gcc, need more work to be entirely sure. * AArch64 Spec2006 int regression (1/10) - Looked at bug databases and mailing list archive for more information * armv3 (bug #85 and bug #410) (2/10) - Looked at both the outstanding bug to find more information - proposed using -mno-lra for armv3 after discussion with the team * Misc (2/10) - Public holiday (2/10) - Annual Leave (2/10) == Plan == * zero/sign extension elimination with widening types == Holidays == * 06/10/2014 - Public holiday * 07/10/2014 and 07/10/2014 - Annual leave

11 years, 7 months

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[Weekly] 29 SEPT - 3 OCT 2014

by Michael Collison

== This week == * TCWG-515 - Neon intrinsic testing part 1 (5/10) - Developed fix for vclz DejaGnu failure - Tested on ARM hardware * Linaro bugzilla 602 - gcc 4.7.3 compiler internal error while building hsail components (1/10) - Unable to reproduce with either Linaro 4.8 or 4.9 * Linaro Bugzilla 540 - Median of three has unneeded register moves (1/10) - Results of Triage indicate generated code has improved though still not optimal - No plans for further improvement * Misc. (1/10) - Completed ARM annual review paperwork * Out sick Friday, October 3rd (2/10) == Next week == - Full validation testing on vclz bug fix - Create patch for vclz bug fix and send to gcc-patches list - Resolve any blocking issues to patch for bugzilla 331

11 years, 7 months

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[ACTIVITY] 29 September - 3 October 2014

by Venkataramanan Kumar

= Progress == * Core mark benchmark and report for PGO and PGO + LTO (2/10) Collected benchmark scores and report sent internally. Adding PGO benefits coremark. LTO seems to hurt. More runs and profiling next week. Tired few experiments with -funroll-all-loops and seems to benefit. * Misc [2/10] Internal meeting and 1-1 with Ryan and inline manger. Revisited and closed PR61442 Short week leave on 29 Sep, 2 and 3rd Oct (6/10). == Plan == * Coremark benchmark and profiling for PGO and PGO + LTO * Investigate PR 62308 * Setup Cbuildv2 build in internal machine.

11 years, 7 months

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[Activity] Aug 28 - Oct 5

by Rob Savoye

== Progress == * Fixed test infrastructure bugs (TCWG 1378 - 8/10). - Installed Foundation Model on all Hetzner machines so aarch64 bare metal testing works. - Refactored all board support files to eliminate duplication to reduce maintainance headaches. Fixed ldflags so now getting good results. - Backport job is working good now. - Worked on Gerrit/Jenkins integration, with the goal of having the notifications work *after* the test and validation is done. - More work on optimizing SSH connections by reducing extraneous commands in the test framework. - Recreated stable branch from master now that results are much better. * Meetings and Misc (2/10) * Fixed National Park internal wireless network, getting access to much better bandwidth than the crappy Guest one. :-) == Plan == * Escape Yosemite, hard during a great weather window, and being the only person in my group with a job... * Continue fixing remote testing support, merge "boards" branch into master, then make it stable after more testing.

11 years, 7 months

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[ACTIVITY] Week 40

by Charles Baylis

== Progress == Closed bug #405 (not a bug) NEON load/store . reworked patches not to do type-punning [9/10] . investigated alternative ways to solve poor code generation with array of vector types Started investigating NEON bugs 403, 418 [1/10] == Plan == NEON load/store - submit new patches, continue upstream discussion Try out validation infrastructure for my own patches

11 years, 7 months

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[ACTIVITY] 29 September - 3 October 2014

by Christophe Lyon

== Progres == * GCC trunk/4.9 cross-validation (CARD-647) (3/10) - aarch64 address sanitizer tests currently all fail at execution under qemu because they try to reserve 50GB of memory. Tried to push the limits with no success so far. - working on fixing support for testcases generating a shared lib - newly introduced abi_check for aarch64 fails on my side, probable testsuite configuration problem. * Linaro branches - updated backports spreadsheet - reviewed backports prepared by Yvan * Validation (3/10) - manually running builds+validations to compare master and chroot branches, see the diffs between static and dynamic libs in terms of PASS/FAIL, .... * Neon intrinsics tests (1/10) - No need to comply to the GNU coding style since it's imported from and existing testsuite. - only minor changes requested - should help having the 1st subset committed soon * Misc (3/10) - calls/meetings - bugzilla admin etc..

11 years, 7 months

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[ACTIVITY] Week 40

by Renato Golin

== Progress == * Automation Framework (CARD-1378 5/10) - Broken Chromebooks in the lab - Setting up AMD machine - Setting up Juno boards * Background (5/10) - Code review, meetings, discussions, etc. - Writing LPC presentations - Broken buildbots == Plan == * Spend less time fiddling with hardware... * Fix the Compiler-RT buildbot * FPU parser (PR20787) * .fpu in assembler (PR20757) * -mpfu in driver (PR20700)

11 years, 7 months

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[PATCH 1/2] lib/make.sh: Add support for installing headers for i686 and x86_64

by Will Newton

--- lib/make.sh | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/lib/make.sh b/lib/make.sh index fb7137c..b917ece 100755 --- a/lib/make.sh +++ b/lib/make.sh @@ -460,8 +460,15 @@ make_install() local srcdir="`get_srcdir $1 ${2:+$2}`" if test `echo ${target} | grep -c aarch64` -gt 0; then dryrun "make ${make_opts} -C ${srcdir} headers_install ARCH=arm64 INSTALL_HDR_PATH=${sysroots}/usr" - else + elif test `echo ${target} | grep -c i.86` -gt 0; then + dryrun "make ${make_opts} -C ${srcdir} headers_install ARCH=i386 INSTALL_HDR_PATH=${sysroots}/usr" + elif test `echo ${target} | grep -c x86_64` -gt 0; then + dryrun "make ${make_opts} -C ${srcdir} headers_install ARCH=x86_64 INSTALL_HDR_PATH=${sysroots}/usr" + elif test `echo ${target} | grep -c arm` -gt 0; then dryrun "make ${make_opts} -C ${srcdir} headers_install ARCH=arm INSTALL_HDR_PATH=${sysroots}/usr" + else + warning "Unknown arch for make headers_install!" + return 1 fi if test $? != "0"; then warning "Make headers_install failed!" -- 1.9.3

11 years, 7 months

3
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[ACTIVITY] 8th - 26th September

by Bernie Ogden

cbuild2 benchmarking - TCWG-360 [9/10] * Knocked off a lot of rough edges * Now working fairly robustly lowlevellock.h comments - CARD-341 [4/10] * Got a bit stuck trying to follow condvar locking * But wasn't really needed to describe the code in question LCA [10/10] LCA recovery day [2/10] Meetings/mail/etc [5/10] =Plan= cbuild2 benchmarking: * Push upstream for others to look at * Sort out storage story for benchmark sources and results * Try to get working on a Juno (in LAVA, therefore on OE) * Look at our Jenkins scripts with a view to figuring out how to hook in * Work through list of bits 'n' pieces to fix - + Don't scrape logs (bad for server) + Don't fail on network timeouts + Extra target control knobs - disable ASLR, set a nasty nice value, maybe hugepages + Set appropriate flags automatically for cross-builds

11 years, 7 months

1
0
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[ACTIVITY] 22 - 26 September 2014

by Will Newton

== Progress == * Monday off to recover from Connect (2/10) * Catch up on email (1/10) * Upstream work (1/10, CARD-341) - Patch review * Investigate malloc single-thread optimizations (1/10, TCWG-436) - More exploratory work on atomics * Investigate binutils support for full range of AArch64 relocs (1/10) * Annual leave Thursday and Friday (4/10) == Issues == * None == Plan == * More work on atomics * Figure out how to make an LLVM cross compiler with gas/ld -- Will Newton Toolchain Working Group, Linaro

11 years, 7 months

1
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[ACTIVITY] Week 39

by Yvan Roux

2 post-connect days off (4/10) == Issues == * Validation is in an "under construction" state. == Progress == * GCC 4.9 2014.10 (4/10) - Analysed validation issues with our cbuild2 branches. * Misc: (2/10) - Catch up with mails. - Various meetings. - AArch64 Libunwind upstream patch review. == Plan == * Catch up with backports * Audit validation failures

11 years, 7 months

1
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[Weekly] 22-26 SEPT 2014

by Michael Collison

== This week == * TCWG-515 - Neon intrinsic testing part 1 (6/10) - developed reduced test case to demonstrated vclz DejaGnu failure - Created upstream bug (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63365) - Bug triage discovered issue occurs in copy propagation * Linaro Bugzilla 331 - [4.9 Regression] ICE in final_scan_insn, at final.c:2952 (aarch64-linux-gnu) (2/10) - Completed validation testing and sent to gcc-patches for trunk review * Linaro bugzilla 602 - gcc 4.7.3 compiler internal error while building hsail components (1/10) - Bug triage * Misc. (1/10) - 1:1 Meetings == Next week == - Identify solution for upstream bug 63365 - Triage bugzilla 602 - Resolve any blocking issues to patch for bugzilla 331

11 years, 7 months

1
0
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[ACTIVITY] 22-26 Sept 2014

by Kugan

== Progress == * LR register not used in leaf functions (TCWG-539) (2/10) Posted the patch after regression testing https://gcc.gnu.org/ml/gcc-patches/2014-09/msg01833.html * AArch64 Spec2006 int regression (3/10) - After struggling to boot Juno, found the combination that works - Ran spec2006 int benchmarks to try reproduce - waiting for more information to continue * Launchpad bugs (LP1331112, LP1332640. LP1331126 and LP1320965) (3/10) - Set-up cbuild2 and spec2k on aarch64 board - ran aarch32 and aarch64 in aarch64 board with 09.2014 - Updated the bug entries with the results * Misc (2/10) - Connect recovery (2/10) == Plan == * 29/09/2014 - Public holiday * Get back to zero/sign extension with pass to promote operations

11 years, 7 months

1
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[Activity] 22 - 26

by Venkataramanan Kumar

== Progress == * Connect recovery [6/10] Very short week short week travel back from connect 22nd - 23rd travel. 25th - sick leave. * Backport - Bug 676 - CSE did not optimize the redundant cmp instruction on aarch64 [2/10]. Checked the issue by building latest trunk, linaro branch and by adding the patch on top of linaro branch . Validated the code generated at -O2 and it seemed to be optimal and bug does not occur. Discussed with Christophe and decided to rebackport it along with 211881. It was reverted because of an libjava bug which is fixed in 211881. Used back flip to back port, git review was not automatically working. So manually amended by adding the change log for combined backport of revisions 209643 and 211881. * Misc [2/10] Prepared notes on LCU14 to AMD team. Examined spec benchmark in internal Aarch64 hardware for a support issue. Internal meeting and 1-1 with manager. == Plan == * Coremark benchmark and report for PGO and PGO + LTO * Get profiles on trunk for PGO and PGO + LTO * 29/9/2014 - Personal day off * 2/10/2014 - 3/10/2014- Dusserra Holidays Leave

11 years, 7 months

1
0
0 0

[ACTIVITY] Week 39

by Charles Baylis

== Progress == * Connect recovery [4/10] * NEON load/stores (TCWG-516 [5/10]) . initial review of my vldN_lane asm()->__builtin patches is promising . the other patches for other loads/stores are wrong. Have been investigating (with upstream) how much bigger the can of worms is. * Misc [1/10] . LCA15 travel . bug investigation (#405) == Plan == * more NEON load/store

11 years, 7 months

1
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[ACTIVITY] 22-26 Sept 2014

by Christophe Lyon

Short week, 2 days holiday (4/10) == Progress == * GCC trunk/4.9 cross-validation (2/10) - reported a few new FAILs - trying to allocate time to fix new FAILs introduced in the 4.9 branch on devirt-28a.C, mostly because a testsuite configuration problem. - fixed reporting of email-driven validations * AArch64 libsanitizer - finally committed asan+ubsan support for AArch64! * Misc (4/10) * email catch-up * calls/meetings * updated backports speadsheet, backlog now > 75 * bugzilla management == Next == * GCC trunk/4.9 cross-validation: - actually reproduce+propose fixes for a couple of regressions recently observed * AArch64 thread sanitizer * Neon intrinsic tests * Analyze failures in Backport job in Jenkins * Analyze differences in validation results between using shared libs and static libs

11 years, 7 months

1
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[ACTIVITY] Week 39

by Renato Golin

== Progress == * Two days holiday * Toolchain (CARD-862 2/6) - http://llvm.org/PR20700 (-Wa,-mfpu in IAS) WIP - http://llvm.org/PR20702 (vadd #imm, fix vbic) FIXED * Background (4/6) - Code review, meetings, discussions, etc. - Catching up with reviews & emails post-connect == Plan == * Continue -Wa,-mfpu implementation in IAS * Start implementing fpu stuff in assembler * Fix the Compiler-RT buildbot * Add libc++abi buildbot

11 years, 7 months

1
0
0 0

updated stable branch

by Rob Savoye

I just updated the stable branch to match master, which in my testing has been reliable and stable. I also changed the following Jenkins jobs to use the stable branch: Backport, BuildFarm, BinaryRelease, SourceRelease. Note that now any Jenkins job that runs tests and validates them using the tcwgweb.sh script, the build and test run may succeed, but if there are any regressions, the dot will be Red now instead of Green. This primarily effects the Backport and the Release jobs. - rob -

11 years, 7 months

2
1
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updating stable branch today

by Rob Savoye

Unless anyone has a problem, I'm going to update the stable branch from master this afternoon. - rob -

11 years, 7 months

1
0
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Re: what options should to compile aarch64 by gcc 4.9.

by Yvan Roux

Hi Sugar, the toolchain you need is the one with the aarch64-linux-gnu triplet. Regards, Yvan On 18 September 2014 08:05, Sugar <shugelinux(a)gmail.com> wrote: > Hi yvan, > I saw linaro have released > gcc-linaro-arm-linux-gnueabihf-4.9-2014.08_linux.tar.bz2. I have compiled > cortex-a53 by 'arm-linux-gnueabihf', but its binary is 'ELF 32-bit LSB > executable', not 'ELF 64-bit'. > Is it only compile to aarch32? If I want to compile aarch64, which > toolchains I should choose? Or what options should pass to compiler. > > Thanks.

11 years, 7 months

1
0
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Toolchain for kernel 2.6.36

by Joel (Xi Zhou) Zhou

Hi all, I'm using ct-ng to rebuild Linaro toolchain (arm-linux-gnueabihf ) for Linux kernel 2.6.36. Ct-ng version: ct-ng-linaro-1.13.1-4.8-2014.01-01 There is a “FATAL: Kernel too old” message after mounting the rootfs. It turns out the default config using pre-built sysroot from Linaro website. After setting " CT_PREBUILT_SYSROOT=n" to build sysroot with lower kernel version, I get the following error: [EXTRA] Building final compiler [ERROR] /projects/broadcom-linux/joelz/opt/gcc-linaro-arm-linux-2.6-gnueabihf/arm-linux-gnueabihf/libc/usr/include/gnu/stubs.h:7:29: fatal error: gnu/stubs-soft.h: No such file or directory [ERROR] make[5]: *** [_muldi3.o] Error 1 [ERROR] make[4]: *** [multi-do] Error 1 I tried to put " -mfloat-abi=hard" as CFLAG in different place, still can't pass this error. If you have any idea how to fix it, please let me know. Thanks, Joel

11 years, 7 months

2
2
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[ACTIVITY] 8-12 September 2014

by Christophe Lyon

== Progress == * GCC trunk/4.9 cross-validation (2/10) - noticed a couple of newly introduced failing tests in some corner cases - improved notification of selected commits to help fill the backports speadsheet * AArch64 libsanitizer - answered Marcus/Andrew after their feedback * Misc (conf calls, meetings, ....) 6/10 - usual 1/1 and team calls - Connect preparation - travelled on Friday == Next == * Connect LCU14

11 years, 8 months

1
0
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[ACTIVITY] Week 37

by Renato Golin

== Progress == * Toolchain (CARD-862 6/10) - http://llvm.org/PR20529 (VFP unwind libcxxabi) - http://llvm.org/PR20700 (-Wa,-mfpu in IAS) - http://llvm.org/PR20702 (vadd #imm, fix vbic) * Buildbots (TCWG-76 1/10) - Three new ARMv7 buildbots with CMake are up - Another ARMv7 Benchmarking buildbot (tracking) * Background (3/10) - Code review, meetings, discussions, etc. - Connect preparations, taxi booking, etc == Plan == * Connect then... * Finish vadd, -mfpu * Start implementing fpu stuff in assembler * Fix the Compiler-RT buildbot * Work on LPC presentations

11 years, 8 months

1
0
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[ACTIVITY] 8 - 12 September 2014

by Will Newton

== Progress == * More work on malloc app benchmark framework (1/10, TCWG-441) - Postgres still has an issue with SELinux on Fedora... * Email, meetings, etc. (1/10) * Upstream work (3/10, CARD-341) - Patch review - Investigate glibc testsuite build failures on ARM * Investigate malloc single-thread optimizations (4/10, TCWG-436) - Atomics changes look like they will only help on AArch64 - Some improvements can be made to atomic code in general on ARM and AArch64 - Still need to look at locking * Peparing and packing for Connect (1/10) == Issues == * Electric/gas meter replacement and broken refrigerator consumed some time == Plan == * Linaro Connect -- Will Newton Toolchain Working Group, Linaro

11 years, 8 months

1
0
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