- linaro-toolchain - lists.linaro.org

[ACTIVITY] 6 - 10 February 2017

by Diana Picus

== Progress == * [ARM GlobalISel] Add support for fp arguments [TCWG-1029] [5/10] - Committed support for single precision hard float and soft-fp ABIs - Work in progress on supporting double precision * Misc [5/10] - Meetings, mailing lists, code reviews - Reverted / fixed a few patches that broke the buildbots - Tested and uploaded binaries for release candidate 2 on AArch64 == Plan == * More GlobalISel

9 years, 2 months

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Compiler selection for log10/Qsort on ARM64

by Bharat Bhushan

Hi All, I am working on log10/qsort benchmarks on ARM64 (ARMv8) processor, I want to check if we have experience with these benchmarks. Actually i am looking for a compiler version which gives best results with these benchmarks and specific compiler optimization (in my case is see O3 gives best numbers) ? I have tried GCC-4.9 and GCC-6.2 with log10 benchmark and my observations are: 1) With gcc 4.9 - 140 us 2) With GCC 6.2 - 150 us My compilation flags are "-O3 -ftree-vectorize -funroll-all-loops --param max-inline-insns-auto=550 --param case-values-threshold=30 -falign-functions=32 -ftracer" So it seems like gcc-6.2 is better, am i missing something, should i use some better compiler flags? Thanks -Bharat

9 years, 3 months

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[Activity] 30 Jan - 3 Feb 2017

by Yao Qi

~ Progress ~ * AArch64 OpenOCD. [6/10] Solder and desolder the JTAG joint on HiKey. Tried different JTAG options, but still can't get OpenOCD working. * Patches review. [3/10] ** ILP32 GDB. Help cavium to reduce fails from 500 to 70. GDB patch is OK, but there are still some regressions on ilp32 vs. lp64 on aarch64. Steve is still investigating on them. ** SVE GDB. Remove MAX_REGISTER_SIZE. Look people tend to agree the way removing MAX_REGISTER_SIZE. Looking forward to Alan's patches :) ** Kernel awareness debugging. Reviewed the cover letter of IBM's patches. Want to share the common kernel debugging part between IBM and Linaro. * Schengen visa. [1/10] Fill in more in application form. Document preparation. ~ Plan ~ * Kernel awareness debugging. Continue reviewing IBM's patches, and figure out how to share the code. * Go to London for visa application on Friday. -- Yao Qi

9 years, 3 months

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[ACTIVITY] 30 Jan-3 Feb 2017

by Christophe Lyon

== Progress == * Validation - prototyping better use of containers for validations * GCC - reported a few failures upstream * misc (conf-calls, meetings, emails, ....) == Next == * ABE & Jenkins jobs patches reviews and bug fixes * GCC: - bug fixing

9 years, 3 months

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[ACTIVITY] Week 05

by Yvan Roux

== Progress == o Linaro GCC/Validation (7/10) * GCC 4.9 2017.01: - prepared final release * GCC 5.4 2017.01: - sources and binaries ready to publish * GCC 6.3 2017.02: - Cherry-picked bug fix into release branch - ready for RC2 * Lot of release notes iterations and discussions * Backports reviews * Tree reassociation: on-going o Misc (3/10) * Various meetings and discussions. == Plan == o Releases... o Tree reassociation

9 years, 3 months

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[ACTIVITY] 30 Jan - 3 Feb 2017

by Omair Javaid

=== This Week === LLDB ARM/AArch64 hardware breakpoints [TCWG-717] [9/10] -- Wrote multi-threaded implementation of hardware breakpoints. -- Added thread specific handlers to create hardware breakpoints. -- Basic multi-threaded test application works after some fixes and debugging. -- Committed fix for LLDB AArch64 android gcc build failure Miscellaneous Activities [1/10] -- Meetings, Emails etc. === Next Week === LLDB ARM/AArch64 hardware breakpoints [TCWG-717] -- Write LLDB testsuite test cases for hardware breakpoints -- Code clean-up and first version patch submission -- Start work on Arm register context changes for hardware breakpoints.

9 years, 3 months

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[ACTIVITY] 30 Jan - 3 Feb 2017

by Prathamesh Kulkarni

== This Week == * TCWG-1006 (2/10) - Created prototype patch for propagating returns_nonnull along the same lines as malloc. * TCWG-1010 (2/10) - Continuing to work on prototype for bitwise dce * ICE with __builtin_abs with -fgimple (2/10) - Posted patch upstream * Sick leave (2/10) * Misc (2/10) - Setting up docker on tcwg-ex40-01 - Meetings == Next Week == - TCWG-1010, TCWG-548

9 years, 3 months

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[ANNOUNCE] Linaro Binary Toolchain Release-Candidate GCC 6.3-2017.02-rc1

by Ryan Arnold

The Linaro Binary Toolchain ============================ The Linaro GCC 6.3-2017.02-rc1 Release-Candidate is now available. The GCC 6 Release series has significant changes from the GCC 5 release series. For an explanation of the changes please see the following website: https://gcc.gnu.org/gcc-6/changes.html For help in porting to GCC 6 please see the following explanation: https://gcc.gnu.org/gcc-6/porting_to.html Download release-candidate packages from: http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.02-rc1/ http://snapshots.linaro.org/components/toolchain/binaries/6.3-2017.02-rc1/ Previous snapshots and release-candidates are at: http://snapshots.linaro.org/components/toolchain/binaries/ Previous releases are at: http://releases.linaro.org/components/toolchain/binaries/ Host Requirements ================== Linaro officially supports the current and previous Ubuntu LTS releases (as of the time of this release). This does not mean that the toolchain will not work on other/older Linux distributions. See the following for the life-time of Ubuntu LTS releases. https://wiki.ubuntu.com/Releases The host system upon which the cross-compiler will run requires a minimum of glibc 2.14, because of API changes to glibc's memcpy API. https://bugs.linaro.org/show_bug.cgi?id=1869 Package Versions ================= Linaro GCC 6.3-2017.02-rc1 http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.02-rc1/ Linaro glibc 2.23 (linaro/2.23/master) https://lists.gnu.org/archive/html/info-gnu/2016-02/msg00009.html Linaro newlib 2.4-2016.03 (linaro_2.4-branch) https://sourceware.org/ml/newlib/2016/msg00370.html Linaro binutils 2.27 (linaro_binutils-2_27-branch) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob_plain;f=bin… Linaro GDB 7.12 (gdb-7.12-branch) https://lists.gnu.org/archive/html/info-gnu/2016-10/msg00007.html Linaro toolchain package git branches are hosted at: http://git.linaro.org/?a=project_list&s=toolchain%2F&btnS=Search NEWS for GCC 6 (as of Linaro GCC 6.3-2017.02-rc1) ================================================== * The mingw toolchains are now archived using the rsync -L option in order to avoid problems with Windows extractors and symbolic links. https://review.linaro.org/#/c/16415/ This resolves the following user bugs: https://bugs.linaro.org/show_bug.cgi?id=2684 https://bugs.linaro.org/show_bug.cgi?id=2192 https://bugs.linaro.org/show_bug.cgi?id=2762 * The soft-float targeted toolchains have now been configured to generate code using -mfloat-abi=soft. This makes arm-linux-gnueabi and armeb-linux-gnueabi toolchains use the "soft" FP ABI instead of "softfp". Historically, TCWG's toolchains provided both "soft" and "softfp" multilibs, but when switching from crosstool-ng to cbuildv2/abe (which support a single multilib) "softfp" multilib was choosen. Using "-mfloat-abi=soft" is a better choice for a gnueabi toolchain, since it doesn't require cores to have a floating-point unit. This change should not break compatibility for toolchain users since the ABI will stay the same. The compiler and glibc libraries will not refernce FP instructions. * Removed .la files from binary toolchain archive as these files break autotools builds. https://bugs.linaro.org/show_bug.cgi?id=2764 * The Linaro GCC 6.3-2017.01 snapshot added further enablement for ARMv8-M. * The Linaro GCC 6.2-2016.12 snapshot added various AArch64 bugfixes and optimizations. * Backported glibc patch to simplify static malloc interposition [BZ #20432] to correct user identified issue. commit 058b5a41d56b9a8860dede14d97dd443792d064b Author: Florian Weimer <fweimer(a)redhat.com> Date: Fri Aug 26 22:40:27 2016 +0200 malloc: Simplify static malloc interposition [BZ #20432] * Host binaries for x86_64 linux hosts now have symbols and debug information stripped in order to reduce the size of the toolchain binary archives. This reduces the archive size from 1.5G to 600M for aarch64-linux-gnu target with the gcc-6-branch. * The GDB version was upgraded from GDB 7.11 in the Linaro GCC 6.1-2016.08 release to GDB 7.12 in the Linaro GCC 6.2-2016.11 release. * The Linaro GCC 6.2-2016.10 snapshot added AArch32 support for ARMv8.2 and ARMv8m, as well as some AArch64 fixes for ARMv8.2, and bug fixes merged from FSF GCC 6.2. This is available in the binary toolchain as of Linaro GCC 6.2-2016.11. * Basic tuning support for the Qualcomm qdf24xx was added to the Linaro GCC 6.2-2016.10 snapshot and is available in the binary toolchain as of Linaro GCC 6.2-2016.11. * IFUNC was disabled for baremetal targets, as it was causing test-suite failures, and is presently a Linux only feature. * The gold linker was added to this binary release. * Backported malloc_lock fix into Linaro newlib 2.4. commit 022bd2995640626d9efb6a839884c5e1c7c5e133 Author: Christophe Lyon <christophe.lyon(a)linaro.org> Date: Wed Oct 19 14:11:50 2016 +0200 Re-enable malloc_lock for newlib-nano * Backported rawmemchr patch into Linaro newlib 2.4. commit 5357441171f2409fb759112bc6a00d3e672374d9 Author: Christophe Lyon <christophe.lyon(a)linaro.org> Date: Wed Oct 19 14:09:51 2016 +0200 Add rawmemchr * Backported strlen fix when using Thumb-2 and -Os -marm into Linaro newlib 2.4. commit f194ff4d5e1e304ac2a8d438d7abcbffd2dba757 Author: Christophe Lyon <christophe.lyon(a)linaro.org> Date: Wed Oct 19 14:05:23 2016 +0200 Fix strlen using Thumb-2 with -Os -marm * Backported fix for semihosting ARM when heapinfo not provided by debugger into Linaro newlib 2.4. commit bda499cb9d2b97075f74df9bfb38b23ff4d12ac2 Author: Christophe Lyon <christophe.lyon(a)linaro.org> Date: Wed Oct 19 13:59:52 2016 +0200 Fixed semihosting for ARM when heapinfo not provided by debugger. * Merged latest FSF glibc release/2.23/master into Linaro glibc 2.23. * Backported __ASSUME_REQUEUE_PI check Linaro glibc 2.23 branch. commit 2d20c3bf918cd94ebd4106693adb3a5c9272baba Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Tue May 17 10:16:39 2016 -0300 Add runtime check for __ASSUME_REQUEUE_PI (BZ# 18463) * Backported removal of __ASSUME_SET_ROBUST_LIST from Linaro glibc 2.23 branch. commit bb8f09d72756186a3d82a1f7b2adcf8bc1fbaed1 Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Mon May 16 19:01:10 2016 -0300 Remove __ASSUME_SET_ROBUST_LIST * Backported removal of __ASSUME_FUTEX_LOCK_PI from Linaro glibc 2.23 branch. commit e48b4e7fed0de06dd7832ead48bea8ebc813a204 Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Mon May 16 10:35:25 2016 -0300 Remove __ASSUME_FUTEX_LOCK_PI * Merged latest FSF binutils-2_27-branch into linaro_binutils-2_27-branch. * The libwinpthread DLL is now copied into the host bin directory to satisfy mingw package dependencies. * Backported GNU Linker fix. commit fbc6c6763e70cb2376e2de990c7fc54c0ee44a59 Author: Nick Clifton <nickc(a)redhat.com> Date: Tue Aug 23 09:45:11 2016 +0100 Fix seg-fault in ARM linker when trying to parse a binary file. * Backported GNU Assembler fix for PR 20364 commit 5fe7ebe5ab43750abf8f490b785d99a1e598e7fd Author: Nick Clifton <nickc(a)redhat.com> Date: Fri Aug 5 10:37:57 2016 +0100 Fix the generation of alignment frags in code sections for AArch64. https://sourceware.org/bugzilla/show_bug.cgi?id=20364 * Performance related backports from the following snapshots have been included: Linaro GCC 6.1-2016.06, Linaro GCC 6.1-2016.07, Linaro GCC 6.1-2016.08, Linaro GCC 6.2-2016.09, Linaro GCC 6.2-2016.10, Linaro GCC 6.2-2016.11, Linaro GCC 6.2-2016.12, and Linaro GCC 6.3-2017.01. See the following Linaro GCC snapshots: http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.1-2016.06/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.1-2016.07/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.1-2016.08/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.2-2016.09/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.2-2016.10/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.2-2016.11/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.2-2016.12/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.01/ Contact Linaro =============== File bugs at http://bugs.linaro.org For Linaro member support see http://support.linaro.org For Linaro community support email linaro-toolchain(a)lists.linaro.org -- Ryan S. Arnold | Director - Linaro Core Technology and Tools ryan.arnold(a)linaro.org | ryanarn on #linaro-tcwg @ freenode.irc.net T: +1-612-424-1861

9 years, 3 months

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[ANNOUNCE] Linaro Binary Toolchain Release-Candidate GCC 4.9-2017.01-rc1

by Ryan Arnold

The Linaro Binary Toolchain ============================ The Linaro GCC 4.9-2017.01-rc1 Release-Candidate is now available. This is a courtesy toolchain. The Linaro GCC 4.9 toolchain is officially out of maintenance. This release is being provided in order to merge in the last FSF GCC 4.9 branch changes into the Linaro GCC 4.9 release. Notice: All Linaro GCC 4.9 series toolchain users should migrate to the latest version of the Linaro GCC 4 toolchain in order to mitigate potential security exposure to CVE-2015-7547. See the NEWS section below for details. Download release-candidate packages from: http://snapshots.linaro.org/components/toolchain/gcc-linaro/4.9-2017.01-rc1/ http://snapshots.linaro.org/components/toolchain/binaries/4.9-2017.01-rc1/ Previous snapshots and release-candidates are at: http://snapshots.linaro.org/components/toolchain/binaries/ Previous releases are at: http://releases.linaro.org/components/toolchain/binaries/ Host Requirements ================== Linaro officially supports the current and previous Ubuntu LTS releases (as of the time of this release). This does not mean that the toolchain will not work on other/older Linux distributions. See the following for the life-time of Ubuntu LTS releases. https://wiki.ubuntu.com/Releases The host system upon which the cross-compiler will run requires a minimum of glibc 2.14, because of API changes to glibc's memcpy API. https://bugs.linaro.org/show_bug.cgi?id=1869 Package Versions ================= Linaro GCC 4.9-2017.01-rc1 FSF eglibc 2.19 (linaro_eglibc-2_19) Linaro newlib 2.1.0-2014.09 (linaro_newlib-branch) Linaro binutils 2.24 (linaro_binutils-2_24-branch) FSF GDB 7.10 (gdb-7.10-branch) Linaro toolchain package git branches are hosted at: https://git.linaro.org/toolchain NEWS for GCC 4.9 (as of Linaro GCC 4.9-2017.01-rc1) ================================================== * The soft-float targeted toolchains have switched to -mfloat-abi=soft from -mfloat-abi=softfp. This makes arm-linux-gnueabi and armeb-linux-gnueabi toolchains use “soft” FP ABI instead of “softfp”. Historically, TCWG’s toolchains provided both “soft” and “softfp” multilibs, but when switching from crosstool-ng to cbuildv2/abe (which support a single multilib) “softfp” multilib was choosen. Using “-mfloat-abi=soft” is a better choice for a gnueabi toolchain, since it doesn’t require cores to have a floating-point unit. This change should not break compatibility for toolchain users since the ABI will stay the same. The compiler and glibc libraries will not refernce FP instructions. * Removed .la files from binary installation as these files break autotools builds. https://bugs.linaro.org/show_bug.cgi?id=2764 * Host binaries for x86_64 linux hosts now have symbols and debug information stripped in order to reduce the size of the toolchain binary archives. This reduces the archive size from 830M to 480M for aarch64-linux-gnu target with the gcc-4.9-branch. * The armv8l-linux-gnueabihf targetted toolchain is now built using --with-mode=thumb (like all of the other cross toolchains) rather than the default which is ARM mode. * Applied fix for CVE-2015-7545 - A stack-based buffer overflow in glibc's getaddrinfo() was corrected in glibc 2.23 and backported into Linaro eglibc 2.19 (linaro_eglibc-2_19). https://sourceware.org/ml/libc-alpha/2016-02/msg00416.html * See the following Linaro GCC snapshot: http://snapshots.linaro.org/components/toolchain/gcc-linaro/4.9-2015.10/ Contact Linaro =============== File bugs at http://bugs.linaro.org For Linaro member support see http://support.linaro.org For Linaro community support email linaro-toolchain(a)lists.linaro.org -- Ryan S. Arnold | Director - Linaro Core Technology and Tools ryan.arnold(a)linaro.org | ryanarn on #linaro-tcwg @ freenode.irc.net

9 years, 3 months

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[ACTIVITY] Week 04

by Yvan Roux

o Teaching activity (4/10) == Progress == o Linaro GCC/Validation (5/10) * GCC 4.9 2017.01: - prepared source and binaries for RC1 - release notes to be finalized for publication * GCC 5.4 2017.01 - Rebuilt binaries for the release - Release notes almost completed * Reviews * Back to tree reassociation o Misc (1/10) * Various meetings and discussions. == Plan == o GCC 4.9 release o Backports review o Tree reassociation

9 years, 3 months

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[ACTVITY] 23-27 January 2017

by Christophe Lyon

== Progress == * Validation - working on improvements for containers startup - other improvements/bug fixes * GCC - reported a few failures upstream * misc (conf-calls, meetings, emails, ....) - bugzilla followup == Next == * ABE & Jenkins jobs patches reviews and bug fixes * GCC

9 years, 3 months

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[ACTIVITY] 23 - 27 January 2017

by Omair Javaid

=== This Week === LLDB ARM/AArch64 hardware breakpoints [TCWG-717] [6/10] -- Fixed hardware breakpoints routines in LLDB AArch64 register context. -- Code tweaks in NativeProcessLinux/NativeThreadLinux/ProcessGDBRemote -- Hardware breakpoint working with single threaded applications -- Submitted a fix for LLDB AArch64 android gcc build failure -- Wrote single and multi threaded test applications for test hardware breakpoints. Monitor LLDB buildbot for minimum down time. [TCWG-712] [2/10] -- Investigate random test failures on Arm and add them to flakey tests. -- Buildbot down due to UPS failure -- Got UPS fixed. Restart builders and testers. Miscellaneous Activities [2/10] -- Meetings, Emails etc. -- Hungary visa passport collection -- Background study about GDB Linux Kernel awareness === Next Week === LLDB ARM/AArch64 hardware breakpoints [TCWG-717] -- Continue work on hardware breakpoint register context routines Arm/AArch64 -- Find a way to install hardware breakpoints on multiple threads.

9 years, 3 months

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[ACTIVITY] Jan 23 - Jan 27

by Yao Qi

# Progress # * TCWG-984, PR 20939, GDB aborts if there is an error in disassembly. Done. All patches are committed to mainline. [3/10] * Patch reviews, a lot, [5/10] ** Hold one of ILP32 BFD patch because it may affect aarch64 GDB, Reviewed ILP32 GDB patch, and convince them not to add new target descriptions for ILP32, to make our life easier in the future. Otherwise, we need two copies of target description for each new hardware feature, such as v8.3, SVE, etc. ** Try to hold one disassembler options patch, which affects ARM and GDB. Gave some comments on the interface design, but looks I am late. ** Finish the review on DW_OP_implicit_value. Met some grey area in DWARF spec. * Atomicity of concurrent modification on ptrace. [1/10] It is unclear weather debugging can modify memory for one thread while other threads are running. After the discussions with some kernel guy, PTRACE_POKETEXT is atomic, but GDB use it in a non-atomic way when writing 2-byte aligned 32-bit thumb-2 instruction. Suggested a workaround upstreams. * Misc, meeting [1/10] # Plan # * ILP32 patch review. * Carefully read IBM's kernel debugging patches. * Set up AArch64 bare debugging with GDB, OpenOCD, JTAG and HiKey. Soldering is needed. -- Yao Qi

9 years, 3 months

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[ACTIVITY] 23 - 27 January 2017

by Peter Smith

[TCWG-614] Range extension thunks - LLD now uses synthetic sections for Thunks. ARM Thunks now have symbols and mapping symbols. As a side-effect we can now create local symbols in synthetic sections so I've added them to the ARM PLT sections. [Misc] - Wrote 3 lines of lld 4.0 release notes for ARM - Some upstream patch review in rtdyld and ilp32 support in the assembler - Presented my personal Linaro objectives to the TCWG leads. Plans for next week: - Complete Fosdem presentation, will be leaving early Friday to catch the Eurostar - Respond to any post commit review comments on Thunks - Start work on range extension thunks, the previous commits to use synthetic sections were pre-requisites to range extension thunks, but added little new user-visible functionality. Planned absences: - Fosdem 2017 will need to leave early on Friday 4th Feb - Holiday 21st Feb to 1st March - Linaro Connect 6th to 10th March Euro LLVM 27-28 March (Linaro's request and cost-code)

9 years, 3 months

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[ACTIVITY] 23 - 27 January 2017

by Diana Picus

== Progress == * National holiday on Tuesday [2/10] * [AArch64] Investigate PR30225 [TCWG-1021] [2/10] - This was a bug related to the code alignment factor for the debug frame - Decided it was not a correctness issue and the size savings for using a different factor are probably not noticeable in practice, so I closed the bug * [ARM GlobalISel] Add support for integers < 32 bits wide [TCWG-980] [1/10] - Committed all 3 patches upstream, reworked the third one a bit * [ARM GlobalISel] Add support for pointers [TCWG-1028] [1/10] - Started working on a patch * Misc [4/10] - Mailing list, code reviews, meetings - Buildbots: reverted 2 sets of patches, noticed an issue with some buildbots (which Renato ended up investigating) - FOSDEM slides == Plan == * [ARM GlobalISel] Add support for pointers [TCWG-1028]

9 years, 3 months

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[ACTIVITY] 16 - 20 January 2017

by Omair Javaid

=== This Week === Investigate LLDB testsuite failures on Pine64 target (AArch32 and AArch64 modes) [TCWG-1012] [4/10] -- Capture tests leaving behind runaway processes, found 3 so far. -- Capture random failures and mark them flakey. ARM/AArch64 hardware breakpoints [TCWG-717] [5/10] -- Code review and prepared debug environment -- Looked into Android Arm64 build failure with debug info. Miscellaneous Activities [1/10] -- Meetings, Emails etc. === Next Week === ARM/AArch64 hardware breakpoints [TCWG-717] -- Fix hardware breakpoints routines in LLDB AArch64 register context. Investigate LLDB testsuite failures on Pine64 target (AArch32 and AArch64 modes) [TCWG-1012] -- Keep and eye on tests marked flakey or any new random failures.

9 years, 3 months

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[ACTIVITY] Week 03

by Yvan Roux

o Teaching activity (2/10) == Progress == o Linaro GCC/Validation (5/10) * GCC 4.9 snapshot: - completed snapshot process - waiting for linaro bug #1118 status before releasing or re-spinning the snapshot. https://bugs.linaro.org/show_bug.cgi?id=1118 * Made an published GCC 5.4 RC2, preparing the release o Misc (3/10) * Various meetings and discussions. == Plan == o GCC 4.9 snapshot and binaries o GCC 5.4 release

9 years, 3 months

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[ACTIVITY] 16 - 20 Jan 2017

by Prathamesh Kulkarni

== This Week == * TCWG-1005 (malloc attr propagation) (4/10) - Extended for pointer comparisons - Patch review from Kugan - Removed some cruft from the patch * TCWG-1010 (bitwise dce propagation) (4/10) - Started working on prototype * Misc (2/10) - Looked at Wheader-guard - Building chromium with gcc - Meetings == Next Week == - TCWG-1005, TCWG-1010

9 years, 3 months

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[ACTIVITY] 16-20 January 2017

by Christophe Lyon

== Progress == * Validation - improvements and bug fixes * GCC - reported a few failures upstream - analyzing a bug report on our 4.9 branch * misc (conf-calls, meetings, emails, ....) - bugzilla followup - Connect registration: done == Next == * ABE & Jenkins jobs patches reviews and bug fixes * GCC: - bug fixing

9 years, 3 months

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[Activity] 16 - 20 Jan

by Yao Qi

~ Progress ~ * TCWG-984, PR 20939, GDB aborts if there is an error in disassembly. [3/10] It is a blocker to 7.12.1 release. Fixed it in 7.12 branch. Address comments and manage reviewer's expectations on the patches for mainline. * Approved two Alan's SVE GDB preparatory patches. [1/10] * Reviewed Dave Martin's SVE user space VL control API. [1/10] Can't figure out a case that debugger or debugger user wants to change VL. * Review DWARF patch in big endian on DW_OP_implicit_value. [2/10] Played with the patch, and use part of it in existing gdb tests. Found other GDB bugs, and fixed them. Some readings on DWARF 5. Will post my patches next week and continue reviewing the DWARF patch. * Booked Hungary visa appointment. * Training. [3/10] ~ Plan ~ * TCWG-984, GDB aborts if there is an error in disassembly. * Carefully read IBM's kernel debugging patches. * Set up AArch64 bare debugging with GDB, OpenOCD, JTAG and HiKey. Soldering is needed. -- Yao Qi

9 years, 3 months

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[Activity] 16 - 20 January 2017

by Peter Smith

[TCWG-614] Range extension thunks Started process of upstreaming the conversion of Thunks to SyntheticSections. - Patch 1 of 3 committed, move Thunk Creation later in the link step. - Patch 2 of 3 add support for local symbol creation in upstream review - Patch 3 of 3 waiting for patch 2 Made a patch to output mapping symbols in PLT to test local symbol creation. Not recommending this for inclusion in lld yet, but have included as a way of testing 2. Responded to comment on implementation and overall Thunks proposal. Plans for next week: Yet more range extension work, hope to get patches 2 and 3 above committed.

9 years, 3 months

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[ACTIVITY] 16 - 20 January 2017

by Diana Picus

== Progress == * Out of office Mon-Wed [6/10] * [ARM] Use AddDefaultPred everywhere [TCWG-987] - Committed upstream * LLVM AArch64 4.0.0 [ TCWG-1008] [1/10] - Ran the tests for rc1, everything went smoothly * [AArch64] Investigate PR30225 [TCWG-1021] [1/10] - Someone noticed that llvm-mc is using a different code/data alignment factor for the call frame information than gas, trying to figure out if that would actually confuse a debugger * Misc [2/10] - Mailing lists, code reviews, meetings etc

9 years, 3 months

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[ANNOUNCE] Linaro Binary Toolchain Release-Candidate GCC 5.4-2017.01-rc2

by Ryan Arnold

The Linaro Binary Toolchain ============================ The Linaro GCC 5.4-2017.01-rc2 Release-Candidate is now available. Notice: All Linaro GCC 5 series toolchain users should migrate to the latest version of the Linaro GCC 5 toolchain in order to mitigate potential security exposure to CVE-2015-7547. See the NEWS section below for details. Download release-candidate packages from: http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2017.01-rc2/ http://snapshots.linaro.org/components/toolchain/binaries/5.4-2017.01-rc2/ Previous snapshots and release-candidates are at: http://snapshots.linaro.org/components/toolchain/binaries/ Previous releases are at: http://releases.linaro.org/components/toolchain/binaries/ Host Requirements ================== Linaro officially supports the current and previous Ubuntu LTS releases (as of the time of this release). This does not mean that the toolchain will not work on other/older Linux distributions. See the following for the life-time of Ubuntu LTS releases. https://wiki.ubuntu.com/Releases The host system upon which the cross-compiler will run requires a minimum of glibc 2.14, because of API changes to glibc's memcpy API. https://bugs.linaro.org/show_bug.cgi?id=1869 Package Versions ================= Linaro GCC 5.4-2017.01-rc2 Linaro glibc 2.21 (linaro/2.21) Linaro newlib 2.1.0-2014.09 (linaro_newlib-branch) Linaro binutils 2.25 (linaro_binutils-2_25-branch) FSF GDB 7.12 (gdb-7.12-branch) Linaro toolchain package git branches are hosted at: http://git.linaro.org/?a=project_list&s=toolchain%2F&btnS=Search NEWS for Linaro GCC 5.4-2017.01-rc2 ==================================== * Include GCC fix for upstream bugzilla PR target/78253: [5/6/7 Regression] [ARM] call weak function instead of strong when called through pointer https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78253 * Include GCC fix for Linaro bugzilla #1925: [regression] FAIL: libgomp.fortran/retval1.f90 -O1 execution test https://bugs.linaro.org/show_bug.cgi?id=1925 * Include GCC fix for Linaro bugzilla #2185: aarch64-linux-gnu-g++ internal compiler error: in curr_insn_transform https://bugs.linaro.org/show_bug.cgi?id=2185 * Copy the libwinpthread DLL into the bin directories so it gets into the tmp directory before tar is run. https://review.linaro.org/#/c/13723/ * Increment binutils release date to 2016_02 to reflect the most recent commit: commit ef90a4718f535cbe6345b4e7168baea7b1972abf Author: Matthew Wahab <matthew.wahab(a)arm.com> Date: Tue Jan 12 16:35:30 2016 +0000 [ARM] Support ARMv8.2 RAS extension. * Baremetal sysroot names now contain 'newlib' rather than 'glibc'. * Manifests now contain relative paths rather than absolute paths. * Now generating proper manifest files. * Fixed pi requeue support in glibc 2.21 while allowing the existing 2.21 minimum kernel default setting. This was checked into the linaro/2.21/master branch. commit a68cafa11c500d8a49a3014c43c5152859d037ae Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Tue May 17 10:16:39 2016 -0300 Add runtime check for __ASSUME_REQUEUE_PI (BZ# 18463) commit 6e5cb616b5b442ce8b2664ad673c0acf42a490ac Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Mon May 16 19:01:10 2016 -0300 Remove __ASSUME_SET_ROBUST_LIST commit 9ac61c0047295696cbcdbc26bdc174c7bd25a3c8 Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Mon May 16 10:35:25 2016 -0300 Remove __ASSUME_FUTEX_LOCK_PI * Backported support into GCC for Cortex-A32, Cortex-A35, and Cortex-R8. * Applied fix for CVE-2015-7547 - A stack-based buffer overflow in glibc's getaddrinfo() was corrected in glibc 2.23 and backported into glibc 2.21. https://sourceware.org/ml/libc-alpha/2016-02/msg00416.html * ARMv8.1 Instruction Support - ARMv8.1 instructions support was checked into GCC and binutils. It has been backported into Linaro GCC 5.3 and Linaro binutils 2.25. * Backported -Bsymbolic-functions into Linaro binutils 2.25. * Performance related backports from Linaro GCC 5.2-2015.11, Linaro GCC 5.2-2015.12, and Linaro GCC 5.3-2016.01-1, Linaro GCC 5.3-2016.02, Linaro GCC 5.3-2016.03, Linaro GCC 5.3-2016.04, Linaro GCC 5.4-2016.06, Linaro GCC 5.4-2016.10 and Linaro GCC 5.4-2016.12 have been included. See the following Linaro GCC snapshots: http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.2-2015.11/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2015.12/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.01-1/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.02 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.03 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.04 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2016.06 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2016.10 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2016.12 Contact Linaro =============== File bugs at http://bugs.linaro.org For Linaro member support see http://support.linaro.org For Linaro community support email linaro-toolchain(a)lists.linaro.org -- Ryan S. Arnold | Director - Linaro Core Technology and Tools ryan.arnold(a)linaro.org | ryanarn on #linaro-tcwg @ freenode.irc.net T: +1-612-424-1861

9 years, 3 months

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[ACTIVITY] 09 - 13 January 2017

by Omair Javaid

=== This Week === Monitor LLDB buildbot for minimum down time. [TCWG-712] [1/10] -- LLDB Arm build was broken and then fixed upstream but a buildbot script bug. -- Fixed buildbot script to make sure not every type of build is refreshed after a breakage. Investigate LLDB testsuite failures on Pine64 target (AArch32 and AArch64 modes) [TCWG-1012] [3/10] -- Investigated and fixed TestRegisterVariables (https://reviews.llvm.org/D28666) -- Fixed a log issue which I initially thought was a bug. (https://reviews.llvm.org/rL291889) -- No further AArch64 failures except for one test timedout needs further investigation. -- Some tests fail randomly on AArch32 but pass when run individually. More investigation needed. LLDB Arm/AArch64 Investigate and fix testsuite crashes (Pine64 Crashes) [TCWG-792] [2/10] -- There was some problem occuring when multiple versions of python are installed on tester. -- Also some tests are leaving behind runaway processes. -- Cleaned up testers removed python issue ended up reducing test time to 3 minutes. -- Trying to track runaway processes. Miscellaneous Activities [4/10] -- Travel to Islamabad for Hungary visa interview (9th-10th Jan 2017). -- Meetings, Emails etc. === Next Week === ARM/AArch64 hardware breakpoints [TCWG-717] -- Investigate current status and create task breakdown. Investigate LLDB testsuite failures on Pine64 target (AArch32 and AArch64 modes) [TCWG-1012] -- Further tracking on runaway processes when running AArch32 testsuite. -- Investigation of timedout tests on AArch64.

9 years, 3 months

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[ACTIVITY] Week 02

by Yvan Roux

o Teaching activity (4/10) == Progress == o Linaro GCC/Validation (4/10) * Merge FSF GCC 6 branch into Linaro one * Backports reviews * Delivered snapshot of 6.3-2017.01 source package * Merge FSF 4.9 branch into Linaro one o Misc (2/10) * Various meetings and discussions. == Plan == o Last GCC 4.9 snapshot o GCC 5.4 release

9 years, 3 months

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