- linaro-toolchain - lists.linaro.org

Re: linaro-toolchain Digest, Vol 52, Issue 16

by 박주형

Thanks for the reply, Will Newton. Then can we expect the fix to be included for the official Android toolchain 2014.11? And, thanks for explaining the culprit of this bug, Jongsung Kim! :) On Wed, Oct 29, 2014 at 9:00 PM, <linaro-toolchain-request(a)lists.linaro.org> wrote: > Send linaro-toolchain mailing list submissions to > linaro-toolchain(a)lists.linaro.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.linaro.org/mailman/listinfo/linaro-toolchain > or, via email, send a message with subject or body 'help' to > linaro-toolchain-request(a)lists.linaro.org > > You can reach the person managing the list at > linaro-toolchain-owner(a)lists.linaro.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of linaro-toolchain digest..." > > > Today's Topics: > > 1. RE: Enabling back linker plugin for Linaro Android toolchain > (Jongsung Kim) > 2. Re: Enabling back linker plugin for Linaro Android toolchain > (Will Newton) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 29 Oct 2014 11:26:30 +0900 > From: "Jongsung Kim" <neidhard.kim(a)lge.com> > To: '???' <qkrwngud825(a)gmail.com>, <linaro-android(a)lists.linaro.org>, > <linaro-toolchain(a)lists.linaro.org> > Subject: RE: Enabling back linker plugin for Linaro Android toolchain > Message-ID: <012f01cff31f$c01cea90$4056bfb0$(a)lge.com> > Content-Type: text/plain; charset="UTF-8" > > The version-string from binutils-linaro looks to be blamed. It once was: > > GNU ld (crosstool-NG linaro-1.13.1-4.7-2013.04-20130415 - Linaro GCC > 2013.04) 2.23.1 > > and the linker plugin works with this version of Linaro prebuilt > toolchain. Now it is: > > GNU ld (crosstool-NG linaro-1.13.1-4.8-2014.04 - Linaro GCC 4.8-2014.04) > 2.24.0.20140311 Linaro 2014.03 > GNU ld (crosstool-NG linaro-1.13.1-4.9-2014.08 - Linaro GCC 4.9-2014.08) > 2.24.0.20140801 Linaro 2014.08 > > and the linker plugin is not supported: > > $ arm-linux-gnueabihf-gcc -flto -fuse-linker-plugin -o hello hello.c > arm-linux-gnueabihf-gcc: error: -fuse-linker-plugin is not supported in > this configuration > > Look into gcc/configure script. It uses the version of ld to determine > whether ld supports linker plugin. It extracts the version by doing > something like: > > $ arm-linux-gnueabihf-ld --version | sed 1q | sed -n -e 's,^.*[ > ]$[0-9][0-9]*\.[0-9][0-9]*.*$$,\1,p' > > and it will extract the last 2014.03 or 2014.08. By using proper > substitution expression like 's,^GNU ld (.*) $[0-9][.0-9]*$.*$,\1,p', the > script may enable linker plugin. > > However, patching the script looks like a bad idea, because it doesn?t > help handling the version of gold: > > GNU gold (GNU Binutils for Ubuntu 2.24) 1.11 > GNU gold (crosstool-NG linaro-1.13.1-4.7-2013.04-20130415 - Linaro GCC > 2013.04 2.23.1) 1.11 > GNU gold (crosstool-NG linaro-1.13.1-4.8-2014.04 - Linaro GCC 4.8-2014.04 > 2.24.0.20140311 Linaro 2014.03) 1.11 > GNU gold (crosstool-NG linaro-1.13.1-4.9-2014.08 - Linaro GCC 4.9-2014.08 > 2.24.0.20140801 Linaro 2014.08) 1.11 > > I couldn?t find a reasonable general expression to extract the version. > > > From: linaro-toolchain-bounces(a)lists.linaro.org [mailto: > linaro-toolchain-bounces(a)lists.linaro.org] On Behalf Of ??? > Sent: Monday, October 27, 2014 10:15 PM > To: linaro-android(a)lists.linaro.org; linaro-toolchain(a)lists.linaro.org > Subject: Enabling back linker plugin for Linaro Android toolchain > > I'm using Linaro Android toolchain's arm-eabi- for compiling my Android > Linux kernel with LTO. > > The main benefits of my kernel is that it uses > LTO(Link-Time-Optimizations). > (Patches found here: https://github.com/andikleen/linux-misc) > > But now, it's broken with Linaro Android toolchains from 2014.09~ > > Building Linux kernel with LTO requires Linker plugin with the toolchain. > > > But for some reason, linker plugin is disabled with 2014.09 and 2014.10 > (Which I used from here : > https://android-build.linaro.org/builds/~linaro-android/toolchain-4.9-2014.… > https://android-build.linaro.org/builds/~linaro-android/toolchain-4.9-2014.… > ) > > LTO build works flawlessly with 2014.08. > > With 2014.09 and 2014.10, I get the following error : > cc1: error: -fno-fat-lto-objects are supported only with linker plugin > > If I explicitly remove " -fno-fat-lto-objects " from the Makefile, the > linker fails to link all of the object files. > > > I would like to ask Linaro to enable back the Linker plugin support :) > > Thanks in advance.. > > > > > ------------------------------ > > Message: 2 > Date: Wed, 29 Oct 2014 09:12:53 +0000 > From: Will Newton <will.newton(a)linaro.org> > To: Jongsung Kim <neidhard.kim(a)lge.com> > Cc: ??? <qkrwngud825(a)gmail.com>, linaro-android(a)lists.linaro.org, > Linaro Toolchain <linaro-toolchain(a)lists.linaro.org> > Subject: Re: Enabling back linker plugin for Linaro Android toolchain > Message-ID: > <CANu=DmhPdCGYw0=hCs9tmkbCU6hMLLMJnYS-u_JGz= > p17Bgonw(a)mail.gmail.com> > Content-Type: text/plain; charset=UTF-8 > > On 29 October 2014 02:26, Jongsung Kim <neidhard.kim(a)lge.com> wrote: > > The version-string from binutils-linaro looks to be blamed. It once was: > > > > GNU ld (crosstool-NG linaro-1.13.1-4.7-2013.04-20130415 - Linaro GCC > 2013.04) 2.23.1 > > > > and the linker plugin works with this version of Linaro prebuilt > toolchain. Now it is: > > > > GNU ld (crosstool-NG linaro-1.13.1-4.8-2014.04 - Linaro GCC 4.8-2014.04) > 2.24.0.20140311 Linaro 2014.03 > > GNU ld (crosstool-NG linaro-1.13.1-4.9-2014.08 - Linaro GCC 4.9-2014.08) > 2.24.0.20140801 Linaro 2014.08 > > > > and the linker plugin is not supported: > > > > $ arm-linux-gnueabihf-gcc -flto -fuse-linker-plugin -o hello hello.c > > arm-linux-gnueabihf-gcc: error: -fuse-linker-plugin is not supported in > this configuration > > > > Look into gcc/configure script. It uses the version of ld to determine > whether ld supports linker plugin. It extracts the version by doing > something like: > > > > $ arm-linux-gnueabihf-ld --version | sed 1q | sed -n -e 's,^.*[ > ]$[0-9][0-9]*\.[0-9][0-9]*.*$$,\1,p' > > > > and it will extract the last 2014.03 or 2014.08. By using proper > substitution expression like 's,^GNU ld (.*) $[0-9][.0-9]*$.*$,\1,p', the > script may enable linker plugin. > > > > However, patching the script looks like a bad idea, because it doesn?t > help handling the version of gold: > > > > GNU gold (GNU Binutils for Ubuntu 2.24) 1.11 > > GNU gold (crosstool-NG linaro-1.13.1-4.7-2013.04-20130415 - Linaro GCC > 2013.04 2.23.1) 1.11 > > GNU gold (crosstool-NG linaro-1.13.1-4.8-2014.04 - Linaro GCC > 4.8-2014.04 2.24.0.20140311 Linaro 2014.03) 1.11 > > GNU gold (crosstool-NG linaro-1.13.1-4.9-2014.08 - Linaro GCC > 4.9-2014.08 2.24.0.20140801 Linaro 2014.08) 1.11 > > > > I couldn?t find a reasonable general expression to extract the version. > > This should be fixed in binutils-linaro-2.24-2014.11. > > > From: linaro-toolchain-bounces(a)lists.linaro.org [mailto: > linaro-toolchain-bounces(a)lists.linaro.org] On Behalf Of ??? > > Sent: Monday, October 27, 2014 10:15 PM > > To: linaro-android(a)lists.linaro.org; linaro-toolchain(a)lists.linaro.org > > Subject: Enabling back linker plugin for Linaro Android toolchain > > > > I'm using Linaro Android toolchain's arm-eabi- for compiling my Android > Linux kernel with LTO. > > > > The main benefits of my kernel is that it uses > LTO(Link-Time-Optimizations). > > (Patches found here: https://github.com/andikleen/linux-misc) > > > > But now, it's broken with Linaro Android toolchains from 2014.09~ > > > > Building Linux kernel with LTO requires Linker plugin with the toolchain. > > > > > > But for some reason, linker plugin is disabled with 2014.09 and 2014.10 > > (Which I used from here : > https://android-build.linaro.org/builds/~linaro-android/toolchain-4.9-2014.… > https://android-build.linaro.org/builds/~linaro-android/toolchain-4.9-2014.… > ) > > > > LTO build works flawlessly with 2014.08. > > > > With 2014.09 and 2014.10, I get the following error : > > cc1: error: -fno-fat-lto-objects are supported only with linker plugin > > > > If I explicitly remove " -fno-fat-lto-objects " from the Makefile, the > linker fails to link all of the object files. > > > > > > I would like to ask Linaro to enable back the Linker plugin support :) > > > > Thanks in advance.. > > > > > > _______________________________________________ > > linaro-toolchain mailing list > > linaro-toolchain(a)lists.linaro.org > > http://lists.linaro.org/mailman/listinfo/linaro-toolchain > > > > -- > Will Newton > Toolchain Working Group, Linaro > > > > ------------------------------ > > _______________________________________________ > linaro-toolchain mailing list > linaro-toolchain(a)lists.linaro.org > http://lists.linaro.org/mailman/listinfo/linaro-toolchain > > > End of linaro-toolchain Digest, Vol 52, Issue 16 > ************************************************ >

11 years, 9 months

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Enabling back linker plugin for Linaro Android toolchain

by 박주형

I'm using Linaro Android toolchain's arm-eabi- for compiling my Android Linux kernel with LTO. The main benefits of my kernel is that it uses LTO(Link-Time-Optimizations). (Patches found here: https://github.com/andikleen/linux-misc) But now, it's broken with Linaro Android toolchains from 2014.09~ Building Linux kernel with LTO requires Linker plugin with the toolchain. But for some reason, linker plugin is disabled with 2014.09 and 2014.10 (Which I used from here : https://android-build.linaro.org/builds/~linaro-android/toolchain-4.9-2014.… https://android-build.linaro.org/builds/~linaro-android/toolchain-4.9-2014.… ) LTO build works flawlessly with 2014.08. With 2014.09 and 2014.10, I get the following error : cc1: error: -fno-fat-lto-objects are supported only with linker plugin If I explicitly remove " -fno-fat-lto-objects " from the Makefile, the linker fails to link all of the object files. I would like to ask Linaro to enable back the Linker plugin support :) Thanks in advance..

11 years, 9 months

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Linaro Lab Maintenance impacts to the November Toolchain Quarterly release

by Ryan Arnold

Hi All, There will be lab downtime in the month of November, and rather than jeopardize the November quarterly binary toolchain release we've decided to take some steps to ensure that it takes place on time. The November binary toolchain quarterly release will contain some ARM64 erratum fixes. These are already in the Linaro GCC 4.9 2014.10 source package release. The November binary toolchain quarterly release will contain these fixes, and will be delivered as planned, but will be based on the Linaro GCC 4.9 2014.10 package. We will not have a November Linaro GCC 4.9 2014.11 source package release. The December release will be the next Linaro GCC 4.9 source package release. -- Ryan S. Arnold Linaro Toolchain Working Group - Engineering Manager www.linaro.org

11 years, 9 months

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[ACTIVITY] 20th - 24th October

by Bernie Ogden

cbuild2 benchmarking - TCWG-360 [2/10] * Figured out how to cook my own OE images * Started remembering how to build spec libm exercising - CARD-1693 [2/10] * Borrowed a usable Juno * Found that lapack tests segfault on AArch64 * Ran linpack hpl, didn't observe it exercising libm much ** Haven't ruled out Bernie-error yet, though Upstream - CARD-341 [1/10] * Respun lowlevellock.h comments Meetings/mail/etc [5/10] * A lot of time (>3/10) in performance review and other annual ARM admin * Some back and forth about difficulties of userspace access to ID registers =Plan= Get spec2006 working via my scripts Find a good HPL libm exerciser Spend a lot less time on ARM admin

11 years, 9 months

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[ACTIVITY] 20 - 24 October 2014

by Omair Javaid

== Progress == Further progress on GDB Tracepoints/Fast Tracepoints support on arm [TCWG-480] [6/10] -- Debugging and trying out some code enabling tracepoints in gdbserver -- Research on past tracepoint patches and x86 vs arm architecture comparison ARM/AArch64 GDB testsuite failures investigation [2/10] Miscellaneous [2/10] -- Meetings, Emails etc -- Fix SSH configurations -- Patch Scrolling -- Hong Kong visa process -- Multiple Dr visits due to continued sickness == Plan == Further progress on GDB Tracepoints/Fast Tracepoints support on arm [TCWG-480] Fix internet latency issues from lab hardware.

11 years, 9 months

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[ACTIVITY] 20 - 24 October 2014

by Venkataramanan Kumar

= Progress == * Short week was in vacation (22-24 October) * Updated perf profile numbers for instruction count and documented my analysis for Linaro compiler's O3 + LTO comparison on Aarch64 vs X86_64 (TCWG-544) (2/10) * Misc [2/10] emails, AMD meetings and 1-1 with inline manger. 1-1 with christophe. == Plan == * Coremark benchmark and profiling. Investigate trunk degradation for O3+ PGO + LTO and report.

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[ACTIVITY] 20 - 24 October 2014

by Kugan

== Progress == * Zero/sign extension elimination with widening types (TCWG-546 - 10/10) - Re-wrote the pass from the results of experiments so far - Fixed most of the regression failures - 5 tests are still failing from C/C++/Fortran regression suite. == Plan == * Continue with Zero/sign extension pass. - Get bootstrapping for ARM and AArch64 working - Fix remaining regression failures - Add detail dumps - Remove unnecessary copies (it is now being removed dead code elimination pass) - Get patch ready for upstream discussion

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[Weekly] 20-24 OCT 2014

by Michael Collison

== This week == * GCC Modularization Project (5/10) - Reviewed Re-Architecture GNU Cauldron videos by Andrew Macleod - Reviewed tree/gimple source base * Linaro bugzilla 602 - gcc 4.7.3 compiler internal error while building hsail components (2/10) - Resolved bug by determining that 4.7 compiler was assinging a incorrect VFP register to a parameter - Issue was fixed in 4.8 by adding call to arm_hard_regno_ok which disallowed register * vector Extensions Project (2/10) - Preliminary design work on C++ classes and libvpx review * Misc. (1/10) - Conducted interview with Prathamesh Kulkarni - Conference calls == Next week == - GCC Modularization draft plan to TCWG group for review - Understand status of Re-Architecture work by Andrew Macleod - Further review of libvpx and vector extensions design work

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[ACTIVITY] Week 43

by Charles Baylis

=== Progress === SPEC Benchmarking [5/10] . managed to run SPEC2k . managed to run integer parts of SPEC2k6 . spec2xxx-report fails . can't run full suite as LAVA Junos have insufficient disk NEON error reporting bugs #403/#418 [3/10] . ongoing mailing list discussions vldN_lane patches [1/10] . respun and committed Misc [1/10] === Plan === Talk to Tejas @ ARM about AArch64 NEON loads/stores Review prep Move office Day off at some point (likely Wednesday)

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[ACTIVITY] 20-24 October 2014

by Christophe Lyon

Short week, 2 days off == Progress == * GCC trunk/4.9 cross-validation (2/10) - committed testsuite patch to support forcing -mword-relocations option when compiling testglue.c * Neon intrinsics tests (2/10) - committed the 1st batch (21 commits) * AArch64 sanitizer - libsanitizer internal data depend on the kernel headers version used to build the toolchain, old_[gu]id_t type changed in 3.15.3. - discussing the best way to address this * Misc (2/10) - calls, meetings == Next == * 4.8 branch merge for next release * GCC trunk/4.9 cross-validation - investigate abi_check test, probably another testsuite harness configuration issue * AArch64 sanitizer * Neon intrinsics tests update * cbuild2: - analyze previous results - look at backport-test script + logs

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[ACTIVITY] Week 43

by Renato Golin

== Progress == * Automation Framework (CARD-1378 1/10) - Setting up Junos with ARM * Toolchain (CARD-862 1/10) - Some progress on fpu parser issue - Produced a lot more work for the near future * Buildbots (TCWG-76 4/10) - Setting up a libc++ buildbot, working on reducing failures - Some bots broken, bisecting * Background (4/10) - Code review, meetings, discussions, etc. - Annual review - More lab move planning - EuroLLVM meetings and planning == Plan == * US LLVM whole next week

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[ACTIVITY] 20 - 24 October 2014

by Will Newton

== Progress == * Released Linaro glibc 2.20 2014.11 (2/10) * Released Linaro binutils 2.24 2014.11-2 (2/10) * Investigate gdb and Coresight integration possibilities (1/10) * Email, meetings, etc. (1/10) * Upstream work (4/10, CARD-341) - Patch review - Look binutils testsuite failures on ARM, submit patch == Issues == * None == Plan == * Monday off * Support release process -- Will Newton Toolchain Working Group, Linaro

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[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, 9 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

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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

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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.

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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)

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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

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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, 9 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, 9 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, 9 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, 9 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, 9 months

1
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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, 9 months

1
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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, 9 months

1
0
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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, 9 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, 9 months

2
1
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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, 9 months

1
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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, 9 months

1
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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, 9 months

1
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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, 9 months

1
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0 0

[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, 9 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, 9 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, 9 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, 9 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, 9 months

1
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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, 9 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, 9 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, 9 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, 9 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, 9 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, 10 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, 10 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, 10 months

1
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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, 10 months

1
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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, 10 months

3
5
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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, 10 months

1
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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, 10 months

1
0
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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, 10 months

1
0
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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, 10 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, 10 months

1
0
0 0

[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, 10 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, 10 months

1
0
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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, 10 months

1
0
0 0

[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, 10 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, 10 months

2
1
0 0

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, 10 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, 10 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, 10 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, 10 months

1
0
0 0

[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, 10 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, 10 months

1
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[ANNOUNCE] Linaro GCC 4.9 2014.09 released

by Yvan Roux

The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2014.09 release of the Linaro GCC 4.9 source package. Linaro GCC 4.9 2014.08 is the sixth Linaro GCC source package release. It is based on FSF GCC 4.9.2-pre+svn214896 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+svn214896 * Backport of [AArch32] TARGET_ATOMIC_ASSIGN_EXPAND_FENV hook * Backport of [AArch32] Enable arm target in ira-shrinkwrap-prep* testcases * Backport of [AArch32] fix check_effective_target_arm_nothumb * Backport of Do not convert cast + __builtin_round into __builtin_lround unless -fno-math-errno is used * Backport of [AArch64] Fix Thumb2 testsuite fallout * Backport of [AArch64_be] Fix vec_select hi/lo mask confusions. * Backport of [AArch64_be] Don't fold reduction intrinsics * Backport of [AArch64] Fix offset glitch in load reg pair pattern * Backport of [AArch64][2/2] Add constrain to address offset in storewb_pair/loadwb_pair insns * Backport of [AArch64] Improve TARGET_LEGITIMIZE_ADDRESS_P hook * Backport of [AArch64] Removed unused get_lane and dup_lane builtins. * Backport of [sched-deps] Generalise usage of macro fusion to work on any two insns * Backport of [doc] Document clrsb optab and fix some inconsistencies * Backport of [AArch64] Some aarch64-builtins.c cleanup. * Backport of Guard transformation to lrint by -fno-math-errno * Backport of [AArch32] Adjust clz, rbit and rev patterns for -mrestrict-it * Backport of [AArch32/AArch64] Add CRC32 scheduling information to Cortex-A53 and Cortex-A57 * Backport of [AArch64] Use REG_P and CONST_INT_P instead of GET_CODE + comparison * Backport of [AArch64] Prefer dup to zip for vec_perm_const; enable dup for bigendian; * Backport of [AArch32] TARGET_ATOMIC_ASSIGN_EXPAND_FENV hook * Backport of [AArch64] Use MOVN to generate 64-bit negative immediates where sensible * Backport of [AArch64] Delete f_sels, f_seld types, use fcsel instead * Backport of PR target/60606 target/61330 fix ICE * Backport of [AArch64] PR target/63190 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, 10 months

1
1
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Weird problem building the 2014.08 toolchain in i686-lucid

by Bernhard Rosenkränzer

Hi, I'm having some very odd problems building the 2014.08 toolchain respin -- in the cbuild1 i686-lucid env, building glibc fails with [ERROR] ../sysdeps/unix/sysv/linux/bits/sched.h:127:14: error: variably modified '__bits' at file scope [ERROR] ../sysdeps/unix/sysv/linux/bits/sched.h:127:14: error: variably modified '__bits' at file scope [ERROR] ../sysdeps/unix/sysv/linux/bits/sigset.h:29:23: error: variably modified '__val' at file scope [ERROR] ../sysdeps/unix/sysv/linux/bits/sigset.h:29:23: error: variably modified '__val' at file scope [ERROR] ../misc/sys/select.h:69:15: error: variably modified 'fds_bits' at file scope [ERROR] ../misc/sys/select.h:69:15: error: variably modified 'fds_bits' at file scope [ERROR] /cbuild/slaves/oorts/crosstool-ng/builds/aarch64_be-linux-gnu-linux/install/aarch64_be-linux-gnu/libc/usr/include/linux/posix_types.h:25:16: error: variably modified 'fds_bits' at file scope [ERROR] /cbuild/slaves/oorts/crosstool-ng/builds/aarch64_be-linux-gnu-linux/install/aarch64_be-linux-gnu/libc/usr/include/asm/sigcontext.h:33:2: error: requested alignment is not a positive power of 2 [ERROR] /cbuild/slaves/oorts/crosstool-ng/builds/aarch64_be-linux-gnu-linux/install/aarch64_be-linux-gnu/libc/usr/include/asm/sigcontext.h:53:2: error: unknown type name '__uint128_t' [ERROR] /cbuild/slaves/oorts/crosstool-ng/builds/aarch64_be-linux-gnu-linux/install/aarch64_be-linux-gnu/libc/usr/include/linux/posix_types.h:25:16: error: variably modified 'fds_bits' at file scope [ERROR] /cbuild/slaves/oorts/crosstool-ng/builds/aarch64_be-linux-gnu-linux/install/aarch64_be-linux-gnu/libc/usr/include/asm/sigcontext.h:33:2: error: requested alignment is not a positive power of 2 [ERROR] /cbuild/slaves/oorts/crosstool-ng/builds/aarch64_be-linux-gnu-linux/install/aarch64_be-linux-gnu/libc/usr/include/asm/sigcontext.h:53:2: error: unknown type name '__uint128_t' [ERROR] ../ports/sysdeps/unix/sysv/linux/aarch64/sys/user.h:32:3: error: unknown type name '__uint128_t' [ERROR] ../ports/sysdeps/unix/sysv/linux/aarch64/sys/user.h:32:3: error: unknown type name '__uint128_t' (Yes, the fix is to get rid of cbuild1 and more importantly the requirement for 32-bit builds in a prehistoric environment - it builds just fine on 64-bit present-day boxes... But I don't think we want to make that change in a respin). The "variably modified" errors remain even after hardcoding typedef struct { __cpu_mask __bits[16]; } cpu_set_t; instead of relying on __CPU_SETSIZE and __NCPUBITS, and the line where it complains about alignment not being a positive power of 2 actually hardcodes an alignment of 16. Have you run into those before? ttyl bero

11 years, 10 months

2
1
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[ACTIVITY] 1 - 5 September 2014

by Omair Javaid

== Progress == Debug KGDB with gdb for testing [4/10] LCU14 slides preparation and study for presentation. [2/10] Miscellaneous [4/10] * Configure to use hackbox to test aarch64 gdb remote configs * Retrieve gdb test results in different configurations. * Emails/Patch scrolling/Meetings etc == Plan == patch updates and re submission. Figure ARM and AArch64 gdb missing features. Prepare and travel LCU14

11 years, 10 months

1
0
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[ACTIVITY] 1st - 4th September

by Bernie Ogden

=Progress= cbuild2 benchmarking - TCWG-360 [8/10] * Got an end-to-end run in my test environment * Patched tests to run more selectively (in review) Meetings/mail/etc - [2/10] =Plan= cbuild2 benchmarking: * Clean up some lose ends * Sort out source/results storage glibc: * Finish comments in lowlevellock.h (if time)

11 years, 10 months

1
0
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[ACTIVITY] Week 36

by Yvan Roux

4 days week. == Issues == * Unfortunate cbuild schroot-branch merge, silently brake the validation, and we had to revert a commit in our FSF repo. * aarch64 bare valdiation was broken all week, now workaround but it still have to be fixed. == Progress == * GCC 4.9 2014.09 (6/10) - Completed new backports. - Started FSF 4.9 branch merge for 2014.09 - Investigated validation breakages. * Misc: - Various meetings (2/10) == Next == - 4.9 2014.09 release. - Prepare LCU hacking session - Travel to CA

11 years, 10 months

1
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[Weekly] 01-05 SEPT 2014

by Michael Collison

== This week == * USA Holiday, Monday September 1st * TCWG-534 - Neon intrinsic testing part 8 (2/10) - Tested final eighteen neon intrinsics on ARM with no regressions identified - Unable to test on aarch64 due to test harness issues * Linaro Bugzilla 331 - [4.9 Regression] ICE in final_scan_insn, at final.c:2952 (aarch64-linux-gnu) (2/10) - Bug fix investigation * Launchpad 1312931- gcc 4.8 internal compiler error: in add_stores, at var-tracking.c (2/10) - validation test results review and code review submission * Misc. (2/10) - Linaro Connect presentation finalization and conference call - 1:1 with Christophe == Next week == - Complete Neon intrinsic testing on Aarch64 - Identify bug fix for Linaro Bugzilla 331 - Investigate failures identified in Neon intrinsic testing

11 years, 10 months

1
0
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[ACTIVITY] 1-5 September 2014

by Venkataramanan Kumar

== Progress == * TCWG-181 - Bench marking core mark with LTO (2/10) Measured -O3 -flto vs -O3 on Aarch64 machine with Linaro GCC and Trunk FSF GCC on Aarch64 and X86_64. Performance in both cases seems to be same level. Planning to remeasure in trunk now. * TCWG-531 Fix invalid use of vector register (3/10). Completed fixing. patch tested on Aarch64 machine and up streamed the patch to FSF trunk. * TCWG-532 Fix abinit fails to build on AArch64 (2/10) Bug does not appear in trunk. Case of missing back port. Did git bisect experiments in trunk and found that r213078 solves the problem. Case of code generation for loading labels at -O0 getting fixed after changes to IRA register class. * Cbuildv2 preparation for hack session in LCU14.(1/10) * Others (2/10) * Meetings Christophe, Ryan, Maxim and GCC status meeting * Misc and internal meeting. * Cbuildv2 preparation for hack session in LCU14. == Plan == * Continue testing fix for TCWG-532 * Continue backport fix for TCWG-531. * Continue Benchmark Core mark with LTO (TCWG-181). * TCWG-533 Creating scripting to run git bisect with cbuild2. * Cbuildv2 preparation for hack session in LCU14.

11 years, 10 months

1
0
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[ACTIVITY] 1 - 5 September 2014

by Kugan

== Progress == * Regression on alphaev68-linux-gnu due to uxt/sxt commit (6/10) - posted patch for promoted type based VRP after fixing issues found in bootstrapping and regression testing. But had to drop this as this might have performance implications. https://gcc.gnu.org/ml/gcc-patches/2014-09/msg00288.html - Proposed setting a flag to indicating overflow/wrap so that we can remove uxt/sxt safely. * Preparation for connect hacking session (2/10) - Started with materials for the discussions. * misc (2/10) - Visa - Meetings == Issues == - Value range data generated by VRP is not reliable for uxt/sxt removal as wrapping/overflow is not propagated. - Patch for Calculating range in promoted type is rejected - Proposed propagating additional flag (with some tweaking to preserve size) so that this information is available at the time we deicide on uxt/sxt redundancy - If this cannot be agreed, this patch has to be reverted == Plan == * finalize overflow/wrap propagation * prepare for connect

11 years, 10 months

1
0
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[ACTIVITY] 1 - 5 September 2014

by Will Newton

== Progress == * Email, meetings, etc. (1/10) * Upstream work (1/10, CARD-341) - Patch review * LCU14 slides and review (4/10) * More work on malloc app benchmark framework (4/10, TCWG-441) - Ironed out a few bugs and sources of noise - Still need to find a broader range of workloads == Issues == * None == Plan == * Look into malloc single thread optimization patches situation * Find more workloads to add to malloc benchmarks -- Will Newton Toolchain Working Group, Linaro

11 years, 11 months

1
0
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[ACTIVITY] Week 36

by Renato Golin

== Progress == * Automation Framework (CARD-1378 2/10) - Configuring D01s into a three-schroot box - Turned out unstable, reverting to 4-core setup * Toolchain (CARD-862 0/10) - Re-committed vectorizer patch with MSVC2012-friendly code * LLVM 3.5 Release (TCWG-476 1/10) - Final release out, all done * Buildbots (TCWG-76 4/10) - Adding support for CMake on buildbot Zorg's interface - Making the CMake builds test without NEON - Created a compiler-rt bot, found some bugs, investigating - Submitting changes upstream, will be up soon * Background (3/10) - Code review, meetings, discussions, etc. - Presentations (Connect, LPC) == Plan == * Migrate stack unwinding to VFP for ARMv7+ in compiler-rt * Start implementing fpu stuff in assembler (parser/attributes) * Finish LPC presentations

11 years, 11 months

1
0
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[ACTIVITY] 1-5 September 2014

by Christophe Lyon

== Progress == * GCC trunk/4.9 cross-validation (1/10) - monitoring results - noticed failures on newly introduced tests when running on armeb. Kyrill will fix his tests. * bug #306 (bootstrap failure on i686) (1/10) - unable to reproduce it * AArch64 libsanitizer (3/10) - asan and most of ubsan tests now pass - submitted a gcc patch to enable it - thread sanitizer does not work yet * Neon intrinsic tests (1/10) - ran the whole testsuite on aarch64* and arm* targets on gcc trunk - reported an ICE on aarch64*; was a duplicated, fixed today by Carrot - there are still several tests failing at runtime, need time to reduce the testcases * Misc (conf calls, meetings, ...) (4/10) - usual 1:1 and team calls - bugzilla management == Next == * GCC trunk/4.9 cross-validation monitoring * AArch64 thread sanitizer * Neon intrinsic tests * Connect preparation (hacking sessions)

11 years, 11 months

1
0
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LLVM 3.5.0 Release

by Renato Golin

Folks, Clang+LLVM 3.5.0 was released yesterday (3rd Sep) and Linaro, as usual, have tested both ARM and AArch64 native builds. This is a major milestone for LLVM on ARM/AArch64, please read the release notes to find out more. http://llvm.org/releases/3.5.0/docs/ReleaseNotes.html You can download the native ARM binaries (and sources) at: http://llvm.org/releases/download.html#3.5.0 Since LLVM is natively a cross-compiler, you can download the binary to your host platform and compile to ARM or AArch64, but you'll need extra tools (linker, libc, etc). The main changes are: * EHABI is now enabled by default and it's compatible with both gcc_eh and libc++abi unwinding libraries. * The integrated assembler has got a complete makeover and is now enabled by default on ARM and AArch64. It supports most of what GCC produces and a good part of the hand-coded assembly we've seen in the wild. Please report bugs! * The current AArch64 back-end is the resulting of a merge between the existing back-end with Apple's own private back-end (that they open sourced). It's faster and as stable as the previous and has been further improved since the merge. * Compiler-RT has been integrated to the ARM/AArch64 CMake build, including the sanitizers, though the resulting quality is still beta. Please report bugs! This is the first time that Linaro has produced binaries for both ARM and AArch64 and we'll continue to do so for all major and minor releases from now on. If there is any patch on trunk for ARM/AArch64 that you need back-ported to 3.5.1 (and beyond), please let us know. 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 LLVM's bugzilla: http://www.llvm.org/bugs/ * Questions? "ask Linaro": http://ask.linaro.org/. * Interested in commercial support? Inquire at "Linaro support":mailto: support(a)linaro.org Regards, --renato

11 years, 11 months

1
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Re: [TCWG] American culture before LCU'14

by Rob Savoye

On 09/02/2014 01:36 PM, Renato Golin wrote: > Plus, the American culture that I like the most is steak. And bacon. I > think I'll pass. I won't be making it either. Around here, American culture is called the Rodeo. :-) - rob -

11 years, 11 months

2
1
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[ACTIVITY] 25 - 29 August 2014

by Omair Javaid

== Progress == Arm gdb record-replay pending patches up-streaming [3/10] * Update, test and resubmit patches AArch64 gdb record-replay patches up-streaming [3/10] * Update, test and resubmit patches Miscellaneous [4/10] * Configure git for replying to previous patch submission using send email. * PERF try out on chromebook * Update record-replay slides and debug using cdt integration. * Emails/Patch scrolling/Meetings etc == Plan == Up-streaming of all pending patches after updates. GDB Tracepoints/Fast Tracepoints support on arm [TCWG-480] LCU14 slides preparation and study for presentation.

11 years, 11 months

1
0
0 0

[Weekly] 25-29 AUG 2014

by Michael Collison

== This week == * TCWG-515 - Neon intrinsic testing part 1 (1/10) - Completed testing on ARM targets - Identified failure on vclz intrinsic at all optimization levels * TCWG-524 - Neon intrinsic testing part 4 (1/10) - Completed ARM testing with no regressions found * TCWG-525 - Neon intrinsic testing part 5 (1/10) - Completed ARM testing with no regressions found * TCWG-528 - Neon intrinsic testing part 6 (1/10) - Completed ARM testing with no regressions found * TCWG-529 - Neon intrinsic testing part 7 (1/10) - Completed ARM testing with no regressions found * Launchpad 1312931- gcc 4.8 internal compiler error: in add_stores, at var-tracking.c (2/10) - Resolved and tested on linaro 4.9 branch * Linaro Connect Presentation (2/10) - Completed "Optimization Levels" portion of presentatio * Misc. (2/10) - Launchpad to bugzilla transition - Conference calls with Ryan and Christophe * Issues - Delay in validating Launcpad 1312931 due to SchrootFarm instability - Unable to issue code review on Gerrit after server upgrade == Next week == - USA Holiday, Monday, september 1s - Continue Neon intrinsic testing - Finalize Linaro Connect presentation - Bug fixing

11 years, 11 months

1
0
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[ACTIVITY] 25th - 29th August 2014

by Venkataramanan Kumar

== Progress == * TCWG-181 - Bench marking core mark with LTO (2/10) Measuring -O3 -flto vs -O3 on Aarch64 machine with Linaro GCC and Trunk FSF GCC. * TCWG-520 ICE in linaro compiler for ARMv7 target (4/10). Completed fixing. patch tested on schroot. Backported revision from trunk using gerrit and jenkins. upstreamed the patch. * Others (2/10) * Meetings Christophe, Ryan, Maxim and GCC status meeting * Misc and internal meeting. * Discussed with Yvan on using gerrit and backflip script. 4 day week, Friday 29/8 was holiday. == Plan == * Another Bug fixing task . * Continue Benchmark Core mark with LTO (TCWG-181). * Upstream patch review. * Cbuildv2 preparation for hack session in LCU14.

11 years, 11 months

1
0
0 0

[ACTIVITY] 18 - 22 August 2014

by Kugan

== Progress == * Regression on alphaev68-linux-gnu due to uxt/sxt commit (7/10) - built cross alphaev68-linux-gnu and reproduces it with qemu. - Issue is due to PROMOTE_MODE definition and VRP truncating values. - discussed upstream and after a failed patch, it was suggested that the value ranges have to be calculated in promoted_mode precision. - Patch to do VRP in promoted_mode is in testing. There are few failures to fix. - An easier fix probably is to check the promoted mode against word_mode and disable uxt/sxt elimination. * TCWG-521 - Analysed Coremark and Spec2k for uxt/sxt optimizations TCWG-521(2/10) - Continue with Coremark and have additional patches in development for missing cases. * bswap pr43550 (No card yet) (1/10) - Finished regression testing. Will post the patch after resolving regression with alpha. == Paln == * Continue with VRP in promoted mode, TCWG-521 and bswap pr43550.

11 years, 11 months

1
0
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[ACTIVITY] Week 35

by Yvan Roux

== Issues == * Multiple validation infrastructure issues (gerrit/jenkins/git.linaro.org) now fixed. * aarch64-none-elf is now really long to complete (~11hrs) whereas it was less than 1hr last week. == Progress == * GCC 4.9 2014.09 (3/10) - Committed last week backports - More backports under validation - vca* intrinsics test are faiures analysis ongoing. * Misc - Linaro GCC git repo migration: (2/10) + Discussed and test the migration with Milo, we'll be ready to move the coming week. - Upstream bugzilla: (2/10) + Fixed PR 62248 : Configure error with --with-fpu=fp-armv8 - Linaro bugzilla: (1/10) + Fixed #562 : New tests failed on linaro 4_9 branch - Various meetings: (1/10) - Helped Venkat with backports (1/10) - launchpad bug migration duty. == Next == * Off on Monday * Complete backports. * Back on AArch64 libunwind * Prepare Connect Hacking session

11 years, 11 months

1
0
0 0

[ACTIVITY] 25 - 29 August 2014

by Will Newton

== Progress == * Monday bank holiday (2/10) * Email, meetings, etc. (1/10) * Upstream work (1/10, CARD-341) - Patch review * Built releases of newlib, binutils and gdb for 2014.09 (2/10) * LCU14 research and slides (4/10) == Issues == * None == Plan == * Finish LCU slides * malloc benchmarking -- Will Newton Toolchain Working Group, Linaro

11 years, 11 months

1
0
0 0

[ACTIVITY] 25-29 August 2014

by Christophe Lyon

== Progress == * GCC trunk/4.9 cross-validation (1/10) - checking results * bug #306 (bootstrap failure on i686) (3/10) - fixed an incorrect backport than made GCC build to fail in stage1 - now trying to reproduce the original bug reported * AArch64 libsanitizer (2/10) - resumed work, debugged sysroot / chroot problems with cbuild2 thanks to Maxim * Misc (conf calls, meetings, ...) (4/10) - usual 1:1 and team calls - wrote some doc for Wang == Next == * GCC trunk/4.9 cross-validation monitoring * bug #306 (bootstrap failure on i686) * AArch64 libsanitizer * Neon intrinsic tests

11 years, 11 months

1
0
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[ACTIVITY] Week 35

by Renato Golin

Public holiday + personal holiday (2 days) * Toolchain (CARD-862 0/10) - Proposing change on assembler behaviour (PR20757) * LLVM 3.5 Release (TCWG-476 1/6) - Another critical bug found, rolling RC4 * Background (5/6) - Code review, meetings, discussions, etc. - Presentations (Connect, LPC) - Test-suite buildbot failure investigation - Setting D01 16-core trick on LLVM boards == Plan == * Continue investigating the test-suite failure * Release 3.5 final * Enable D01s as buildbots * Have a look at assembler issues (parser, directives' behaviour)

11 years, 11 months

1
0
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[ACTIVITY] 18 - 22 August 2014

by Omair Javaid

== Progress == GDB Tracepoints/Fast Tracepoints support on arm [TCWG-480] [4/10] * FAST tracepoints try out on arm chromebook with trampoline code borrowed from kernel. AArch64 gdb record-replay bug fix [TCWG-503][TCWG-498] [2/10] * Debugging of issues Miscellaneous [4/10] * Reading on PreLink for LCU14 Presentation * Reading on PERF tools for LCU14 Presentation * LCU14 slides preparation. * Emails/Patch scrolling/Meetings etc == Plan == GDB Tracepoints/Fast Tracepoints support on arm [TCWG-480] Some progress on AArch64 gdb record-replay bug fix [TCWG-503] [TCWG-498] LCU14 slides preparation and study for presentation.

11 years, 11 months

1
0
0 0

[ACTIVITY] 18 - 22 August 2014

by Will Newton

= Progress == * Upstream work (2/10, CARD-341) - Bug investigations - Applied a couple of patches * Booting upstream kernel on Chromebook (2/10) - Kernel booting and running - No builtin wifi but dongle works ok - Breakpoint issue fixed but the test still fails for some other reason, created upstream issue * Malloc application benchmarking (3/10, TCWG-441) - Various improvements of the scripts - Investigate benchmark variability in the presence of frequency scaling - Is it possible to get repeatable numbers on Intel i{7,5,3}? * Start looking at LCU session requirements (1/10) * Annual leave on Friday (2/10) == Issues == * None == Plan == * LCU session slides -- Will Newton Toolchain Working Group, Linaro

11 years, 11 months

1
0
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[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

11 years, 11 months

1
0
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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.

11 years, 11 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

11 years, 11 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

11 years, 11 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

11 years, 11 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

11 years, 11 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.

11 years, 11 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]

11 years, 11 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

11 years, 11 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.

11 years, 11 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)

11 years, 11 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

11 years, 11 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 .

11 years, 11 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

11 years, 11 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.

11 years, 11 months

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