linaro-toolchain

linaro-toolchain@lists.linaro.org

5 participants
5682 discussions

Will this ARM64 erratum patch be backported to this month's Linaro GCC 4.9 release?

by Panshilin (Peter)

Dear all concerned: ARM has reported it's 53's bug:AArch64 multiply-accumulate instruction might produce incorrect result and developed the patch descriped below. will the patch be backported to Linaro 4.9 this month's release. https://gcc.gnu.org/ml/gcc-cvs/2014-10/msg00335.html thanks Peter

11 years, 4 months

[ACTIVITY] 27th - 31st October

by Bernie Ogden

cbuild2 benchmarking - TCWG-360 [8/10] * Scripts build SPEC 2006 tools on x86_64 and arm, not yet on AArch64 * Scripts cross-build for x86 to arm and aarch64 * Cross-built binaries refuse to run Meetings/mail/etc - [2/10] =Plan= cbuild2 benchmarking * Make cross-built binaries run, collect reports * Build tools for AArch64 (lower priority) libm exerising * Work through list of benchmarks, see what I find

11 years, 4 months

[ACTIVITY] 27 - 31 October 2014

by Venkataramanan Kumar

= Progress == * TCWG-544 - Investigate core mark performance with both at -O3 with LTO + PGO (6/10) * Misc [3/10] emails, linaro and AMD meetings and 1-1 with inline manger. 1-1 with christophe. * Tried to reproduce Bug 63653 (1/10) == Plan == * Continue core mark performance with both at -O3 with LTO + PGO. * Continue Bugfix 63653

11 years, 4 months

[ACTIVITY] 27 - 31 October 2014

by Will Newton

== Progress == * Holiday on Monday (2/10) * Upstream work (4/10, CARD-341) - Patch review - Look into malloc hooks issue - Understand Cortex-A53 ld patch - Applied patches * Investigate libm optimization opportunities and benchmarks (2/10) * Email, meetings, review, etc. (2/10) == Issues == * None == Plan == * Follow up single thread optimization discussions * Finish review doc -- Will Newton Toolchain Working Group, Linaro

11 years, 4 months

[ACTIVITY] 27 - 31 October 2014

by Omair Javaid

== Progress == GDB Tracepoints/Fast Tracepoints support on arm [TCWG-480] [3/10] -- Investigate arm hardware debugging capabilities in linux kernel. ARM/AArch64 GDB testsuite failures investigation [TCWG-507] [4/10] Trying out patches that add support for gdbserver catch vfork/fork [TCWG-507] [2/10] Miscellaneous [1/10] -- Meetings, Emails etc -- Annual Review 2014 == Plan == Monday/Tuesday Public Holidays in Pakistan. Fix watchpoints-reuse-slot tests for arm somehow to allow skipping unsupported tests Also investigate the same on AArch64. [TCWG-507] Re-submit some hanging patches after a bit of rework to grab attention.

11 years, 4 months

[Weekly] 27-31 OCT 2014

by Michael Collison

== This week == * GCC Modularization Project (7/10) - Decided on work near term work objectives with Andrew Macleod - Began flattening header files - gimple-streamer.h (complete) - tree-streamer.h (complete) - lto-streamer.h (complete) - tree-core.h (In progress) - cfgloop.h (In Progress - df.h (In progress) * Vector Extensions Project (2/10) - Design work on C++ classes - Call with Charles Baylis to discuss libvpx benchmark * Misc. (1/10) - Conference calls - ARM required online training == Next week == - Continue flattening of header files on GCC modularization project - Further review of libvpx and vector extensions design work

11 years, 4 months

[ACTIVITY] 27-31 October 2014

by Kugan

== Progress == * Zero/sign extension elimination with widening types (TCWG-546 - 10/10) - Fixed regression failures - Fixed bootstrapping issues for ARM and AArch64 - Re-factored and added some comments - x86-64 Bootstrapped and regression tested for all languages with forced promotion. There is 6 differences in scanning for certain instructions. All the execution tests are passing. Needs further investigation. == Plan == * Continue with Zero/sign extension pass. - Benchmarking - Get patch ready for upstream discussion * Improve block memory operations by GCC (TCWG-142) - Start work on this

11 years, 4 months

[ACTIVITY] 27-31 October 2014

by Christophe Lyon

== Progress == * GCC trunk/4.9 cross-validation (1/10) - submitted a couple of patches to clean testsuite cases * Neon intrinsic tests (1/10) - submitted patch to avoid running the tests on ARM targets w/o Neon - started adding new tests - created 2 PR about intrinsic tests failing on AArch64_be (1 assigned to Venkat, 1 to me) * AArch64 sanitizer (1/10) - submitted a patch upstream to allow supporting both older and newer kernels No feedback so far. * GCC 4.8 and 4.9 releases (3/10) - preparing both releases including ARM's latest fixes for the A53 erratum - had to respin mid-week after new fix was committed - LINK_SPEC patch not committed yet in 4.8, and committed in 4.9 after I made the branch merge. - now checking results with references. Several FAIL appear. TBC. * cbuild2 schroot and master branches comparison (1/10) - re-ran schroot branch after cleaning spurious "-static" flag left in dejagnu configuration - better results, faster * Misc (3/10) - calls, meetings == Next == * GCC 4.8 and 4.9 releases: hopefully, after branch merge review * AArch64 sanitizer * Neon intrinsics tests update * cbuild2: - analyze previous results - look at backport-test and tcwgweb scripts + logs

11 years, 4 months

[ACTIVITY] Week 44

by Renato Golin

== Progress == * US LLVM Dev Mtg (4/6) * Buildbots (TCWG-76 1/6) - Fixing last bugs of the libcxx bot - One last failure being looked at * Background (1/6) - Code review, meetings, discussions, etc. - Meeting with Google/ARM/Qualcomm about Android+LLVM * Two days off == Plan == * Investigate last libcxx bug * Move lab/office

11 years, 4 months

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, 4 months

Jump to page:

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

linaro-toolchain