- linaro-toolchain - lists.linaro.org

by Yvan Roux

== Progress == o Linaro GCC/Validation * Completed 6.4 and 7.2 branch merges * Snapshots delayed due to gerrit config upgrade issues * Investigating upstream bugzilla PR81863 * Other patches are still pending on upstream reviews o Misc * Various meetings and discussions. == Plan == o Complete monthly snapshot and binary releases o PR81863, ...

7 years, 8 months

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[ACTIVITY] 14 - 18 August 2017

by Prathamesh Kulkarni

== This Week == * type promotion (7/10) - Refactored patch - Resolved all functional regressions on arm, aarch64, ppc64. * PR78809 (1/10) * Misc (2/10) - pinged patches for malloc propagation and PR78736 - Public holiday == Next Week == - Validation and Benchmarking of type-promotion pass - PR78809

7 years, 8 months

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Q: reasons for lack of support for C++ in OP-TEE?

by Godmar Back

In a recent github thread <https://github.com/OP-TEE/optee_os/issues/1708#issuecomment-320245973> it was suggested that I ask this list about what the exact reasons for the lack of C++ support are, and how/if they break down by C++ feature so as to gauge a possible investment in remedying this situation at least partially. In other words, suppose I changed the build process to include libstdc++, libgcc, and libgcc_eh (and/or other runtime support commonly linked with C++ programs), what features of C++ would work/still fail? And what implementation work would be required to implement the missing features? On a related note, are there intrinsic properties of the secure environment that may conflict with running C++ code, if any? Thank you. - Godmar

7 years, 9 months

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[ACTIVITY] Week 32

by Yvan Roux

== Progress == o Linaro GCC/Validation * Delivered GCC 6 and 7 2017.08 release candidates binaries * Preparing backports for 2017.08 source snapshots * reviewed infra patches o Misc * Various meetings and discussions. == Plan == o Complete backports and branch merges for snapshots o Tuesday off

7 years, 9 months

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[ACTIVITY] 07/08 - 11/08

by Yao Qi

# Progress # * TCWG-1159,New design of GDB/GDBserver target description. [3/10] Split the patch series, and post unrelated stuff first. Patches will be easily reviewed in this way. * TCWG-561, Handle unavailable memory during frame unwinding. [2/10] Committed the first 4 patches, and leave the rest 4 patches for review. * TCWG-1162, Test GDB+OpenOCD with AArch64 boards. [4/10] Resolved the newlib issue. Get my first newlib patch merged. Successfully run GDB testsuite with QEMU system mode. It should be similar to running with OpenOCD. * Upstream review. [1/10] ** Review some memory leaks fixes. ** One patch about armv8.3 pointer authentication. Next week: * On holiday, and back on Thu. * TCWG-1162, triage the aarch64-elf GDB test result with QEMU. * TCWG-1159, rebase my GDB target description patches, and post v4. -- Yao Qi

7 years, 9 months

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[ANNOUNCE] Linaro Binary Toolchain Release-Candidate GCC 6.4-2017.08-rc1

by Yvan Roux

The Linaro Binary Toolchain ============================ The Linaro GCC 6.4-2017.08-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: (sources) http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.4-2017.08-rc1/ (binaries) http://snapshots.linaro.org/components/toolchain/binaries/6.4-2017.08-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/ A description of the arm and AArch64 target triples can be found at: https://collaborate.linaro.org/display/TCWGPUB/ARM+and+AArch64+Target+Tripl… 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 6.4-2017.08-rc1 http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.4-2017.08-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-local/linaro_binutils-2_27-branch) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob_plain;f=bin… Linaro GDB 8.0 (gdb-8.0-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/toolchain NEWS for GCC 6 (as of Linaro GCC 6.4-2017.08-rc1) ================================================== * Previous MinGW hosted version of Linaro GCC C preprocessor failed to convert character set used for string, character constants, etc. This is fixed in this release. Linaro bugzilla #3040 : CC1 and cc1plus cannot convert UTF-8. https://bugs.linaro.org/show_bug.cgi?id=3040 * The Linaro GCC 6.3-2017.05 snapshot added support for -mpure-code option to ARMv7-M and ARMv8-M targets. This option ensures functions are put into sections that contain only code and no data. * The GDB version was upgraded from GDB 8.0. * Previous versions of the Linaro GCC 6 toolchain, when -static -E/—dynamic-list are passed to the linker, might create executables with dynamic sections which aren’t supported by run-time. This was exhibited in Perf Tools build system and has been fixed upstream and backported into Linaro Binutils 2.27 branch. Linaro bugzilla #2926 : Perf tools compiled statically for AArch64 with Linaro release 6.1 and later ones was not statically linked. https://bugs.linaro.org/show_bug.cgi?id=2926 * The Linaro GCC 6.3-2017.03 snapshot fixed some ILP32 issues (TLS, exception handling, …) and these have been incorporated into this release. * Previous versions of the Linaro GCC 6 toolchain were incorrectly generating floating-point code for soft-float Linux targets (arm-linux-gnueabi, and armeb-linux-gnueabi). This escaped detection until recently because the soft-float targeted toolchains were configured to use general-purpose registers for passing floating-point values (which is what you would expect for soft-float toolchains) and the intra-routine floating-code was not noticed. The issue would only show up on targets that were run on hardware that truly didn't have floating-point hardware where the kernel did not trap and emulate floating-point routines. This has been solved in Linaro GCC 6.3-2017.02-rc2 by configuring the toolchain (using --with-float=soft) to generate code without any floating-point instructions at all (-mfloat-abi=soft). https://review.linaro.org/#/c/16968/2 This change should not break compatibility between existing binaries compiled with these toolchains since the float-point parameter passing ABI is still the same. * A bug/regression in the compiler has been identified whereby the target function that is invoked when calling a "weak" function directly is the "strong" override, whereas when calling the function via a pointer the "weak" implementation is used. This would be noticed as inconsistent function invocation when invoking directly vs. invoking via function pointer. This issue only affected 32-bit arm targets. This regression has been fixed upstream and backported into Linaro GCC 6.3-2017.02-rc2. GCC 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 Linaro bugzilla #2562: ARM GCC 5.2 call weak function instead of strong when called through pointer https://bugs.linaro.org/show_bug.cgi?id=2562 * MS Windows does not support symlinks and the MS Windows archive extractor does not properly deep copy the symlink target files/directories into the symlinked directory structure when unpacking the toolchain archive. This causes problems with missing dependencies when using the Linaro mingw toolchains, as identified in the following 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 This has been solved by copying files rather than using symlinks when the mingw targetted toolchain archives are created. https://review.linaro.org/#/c/16415/ * Users of Linaro's toolchain have encountered problems when building projects with Autotools (specifically libtool): https://bugs.linaro.org/show_bug.cgi?id=2764 The Linaro binary toolchain release contained files with a .la suffix as artifacts of the toolchain build process. These .la files are helper files for libtool, but unlike a gcc install tree, they are not position independent and contain full paths. Since these artifacts contain absolute paths they can actually mislead user invocation of libtool into not finding required libraries (because they reference the build tree, not the install location) and hence breaking Autotools builds. These *.la file artifacts have been removed from Linaro toolchain binaries because they are unnecessary for users. * The Linaro GCC 6.3-2017.01 snapshot added further enablement for ARMv8-M and these have been incorporated into this release. * Compiling and statically linking some SPEC2006int tests against tcmalloc have been failing due to a problem with glibc's memory allocator function overrides. This was fixed upstream: https://sourceware.org/bugzilla/show_bug.cgi?id=20432 Backported into Linaro glibc 2.23: 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 2665915cfc46aa6403bb2efd473c523d3167e0cb Author: Andre Vieira (lists) <Andre.SimoesDiasVieira(a)arm.com> Date: Thu Jun 16 12:23:51 2016 +0100 Re-enable malloc_lock for newlib-nano * Backported rawmemchr patch into Linaro newlib 2.4. commit e7b1ee2ea6aa3ee1da41976407410e6202a098c5 Author: Wilco Dijkstra <Wilco.Dijkstra(a)arm.com> Date: Thu May 12 16:16:58 2016 +0000 Add rawmemchr * Backported strlen fix when using Thumb-2 and -Os -marm into Linaro newlib 2.4. commit 5c02bcc086a96b174e1b9e1445a4a1770070107a Author: Thomas Preud'homme <thomas.preudhomme(a)arm.com> Date: Wed May 11 17:18:48 2016 -0400 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 5c9403eaf40951f8a4f55ed65f661b485ff44be7 Author: David Hoover <spm2(a)dangerous.li> Date: Thu Apr 21 07:12:24 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, Linaro GCC 6.3-2017.01, Linaro GCC 6.3-2017.02, Linaro GCC 6.3-2017.03, Linaro GCC 6.3-2017.04, Linaro GCC 6.3-2017.05, Linaro GCC 6.3-2017.06 and Linaro GCC 6.4-2017.07 . 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/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.02/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.03/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.04/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.05/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.06/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.4-2017.07/ 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

7 years, 9 months

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[ANNOUNCE] Linaro Binary Toolchain Release-Candidate GCC 7.1-2017.08-rc1

by Yvan Roux

The Linaro Binary Toolchain ============================ The Linaro GCC 7.1-2017.08-rc1 Release-Candidate is now available. *Notice*: GCC 7.1 ABI change for arm*-*-* targets, and note for aarch64*-*-* targets >From GCC 7.1 release notes: On ARM targets (arm*-*-*), a bug introduced in GCC 5 that affects conformance to the procedure call standard (AAPCS) has been fixed. The bug affects some C++ code where class objects are passed by value to functions and could result in incorrect or inconsistent code being generated. This is an ABI change. If the option -Wpsabi is enabled (on by default) the compiler will emit a diagnostic note for code that might be affected. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77728 GCC 5 and GCC 6 releases will continue to be affected by the ABI bug, since changing ABI in these releases is not practical. A warning enabled by -Wpsabi option was added to GCC 5 and GCC 6 toolchains to diagnose codebases that might be affected by the ABI bug. Additionally, this same bug was present in AArch64 backend in development versions of GCC 7. There was no releases of GCC with this bug present in AArch64 backend, therefore the release notes does not mention this. However, be advised that any code bases built with development versions of GCC 7 need to be recompiled with released version of GCC 7 to conform to ABI. For an explanation of GCC 7 series changes please see the following website: https://gcc.gnu.org/gcc-7/changes.html For help in porting to GCC 7 please see the following explanation: https://gcc.gnu.org/gcc-7/porting_to.html Download release-candidate packages from: (sources) http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.1-2017.08-rc1/ (binaries) http://snapshots.linaro.org/components/toolchain/binaries/7.1-2017.08-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/ A description of the arm and AArch64 target triples can be found at: https://collaborate.linaro.org/display/TCWGPUB/ARM+and+AArch64+Target+Tripl… 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 7.1-2017.08-rc1 http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.1-2017.08-rc1/ FSF glibc 2.25 (release/2.25) https://lists.gnu.org/archive/html/info-gnu/2017-02/msg00002.html Newlib 2.5 (newlib-2_5_0 tag) https://sourceware.org/ml/newlib/2016/msg01191.html GNU Binutils 2.28 (linaro-local/linaro_binutils-2_28-branch) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob_plain;f=bin… FSF GDB 8.0 (gdb-8.0-branch) https://sourceware.org/ml/gdb-announce/2017/msg00003.html Linaro toolchain package git branches are hosted at: http://git.linaro.org/toolchain NEWS for GCC 7 (as of Linaro GCC 7.1-2017.08-rc1) ===========================[ANNOUNCE] Linaro Binary Toolchain Release-Candidate GCC 7.1-2017.08-rc1======================= * The Linaro GCC 7.1-2017.07 snapshot added prefetching configuration improvement for AArch64 targets and laid groundwork to enabling prefetching in more cases. * Previous MinGW hosted version of Linaro GCC C preprocessor failed to convert character set used for string, character constants, etc. This is fixed in this release. Linaro bugzilla #3040 : CC1 and cc1plus cannot convert UTF-8. https://bugs.linaro.org/show_bug.cgi?id=3040 * Performance related backports from the following snapshots have been included: Linaro GCC 7.1-2017.05, Linaro GCC 7.1-2017.06 and Linaro GCC 7.1-2017.07.

7 years, 9 months

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[ACTIVITY] 31/07 - 04/08

by Yao Qi

# Progress # * TCWG-1159,New design of GDB/GDBserver target description. [3/10] Patches are still not reviewed. Keep going to change x86 target descriptions. Post two patches to clean up them first. * TCWG-561, Handle unavailable memory during frame unwinding. [3/10] Patches are posted. * PR 21818, GDB crashes with executable for armv5te. [1/10] Patch is tested, and to be posted. * Upstream review, [2/10] ** ADI patches review, advice on how to match the output in gdb tests, ** Some disassembly regression caused by my previous patches, ** Help people to triage their GDB issues because I don't have the env to reproduce them. * Misc, [1/10] # Plan # * TCWG-1162, Test GDB+OpenOCD with AArch64 boards. Post my newlib patches upstream, and continue to test with QEMU and OpenOCD respectively. * TCWG-1159, New design of GDB/GDBserver target description -- Yao Qi

7 years, 9 months

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[ACTIVITY] Week 31

by Yvan Roux

o Back from vacation Wednesday. == Progress == o Linaro GCC/Validation * Discussed/checked needs for newlib and binutils to include in binaries * Preparing RCs (release notes, ...) * pinged my unreviewed upstream patches * reviewed infra patches o Misc * Various meetings and discussions. == Plan == o 2017.08 GCC 6 and 7 release candidates, backports, ...

7 years, 9 months

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[ACTIVITY] 31st July - 4th August 2017

by Prathamesh Kulkarni

== This Week == * malloc propagation (2/10) - Submitted patch upstream * type promotion (4/10) - Verified ppc64 miscompilation with memcpy-bi.c is a latent issue. - Investigating another miscompilation on ppc64 with patch. - Experimenting with pass placement. * bugs (3/10) - PR78736: pinged upstream. - PR78888: submitted patch upstream. - Started looking at PR78809. - Committed patch add include-guard to tree-vrp.h. * Misc (1/10) - Meetings == Next Week == - Type promotion, PR78809, malloc propagation

7 years, 9 months

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[ACTIVITY] 24 - 28 July 2017

by Prathamesh Kulkarni

== This Week == * malloc propagation (4/10) - Resolved bootstrap comparison failure - Patch passes validation with and without LTO. - Working on handling indirect calls. * type promotion (3/10) - Created patche for resolving ICE with armv3/armv5t. - Have got a hack-ish patch to address interference between type promotion and widening_mul/bswap optimizations, but needs improvement. * Misc (3/10) - Meetings - Visa interview == Next Week == - Continue with malloc propagation, type promotion

7 years, 9 months

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[ACTIVITY] 24 - 28 July

by Yao Qi

# Progress # * TCWG-1159,New design of GDB/GDBserver target description. [3/10] Looks people who can review my patches is on holiday, so I committed 7 patches and leave the rest 19 patches there. Need to think about how to make people more confident on these patches. * PR 21717, PR 21555, fixed. Pushed to master and 8.0 branch. [1/10] * TCWG-1162, Test GDB+OpenOCD with AArch64 boards. [3/10] I can run gdb regression tests with OpenOCD on HiKey. After I power cycle the board, the first several tests can run, but the following tests failed because the board goes to an odd state. Something wrong in OpenOCD side. Try GDB aarch64 bare-metal debugging with QEMU, and then find a bug in newlib which doesn't initialize FPU, so some FPU instruction will trigger und exception. * TCWG-561, Handle unavailable memory during frame unwinding. [2/10] Lear C++ move assignment and move constructor. Finish the code, and testing the patches. * Send my GDB target description talk abstract to Linaro SFO17. * Misc [1/10] # Plan # * Mon and Tue off. * TCWG-561, TCWG-1159. -- Yao Qi

7 years, 9 months

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Problems with Aarch64 vmull_p64 and vmull_high_p64

by Jeffrey Walton

Hi Everyone, I'm working on a early LeMaker HiKey with GCC 4.9.2. I believe everything is fully patched. I'm using the builtin's because the intrinsics are missing. I lifted it from https://gcc.gnu.org/ml/gcc-patches/2015-05/msg01976.html. Any ideas on this issue? hikey$ g++ -march=armv8-a test.cxx -c test.cxx: In function ‘poly128_t VMULL_P64(poly64_t, poly64_t)’: test.cxx:10:1: error: unrecognizable insn: } ^ (insn 9 8 12 2 (set (reg:TI 73 [ D.17869 ]) (unspec:TI [ (reg:DI 75) (reg:DI 76) ] UNSPEC_PMULL)) test.cxx:9 -1 (nil)) test.cxx:10:1: internal compiler error: in extract_insn, at recog.c:2202 Please submit a full bug report, Thanks in advance. Jeff ********** hikey:cryptopp-fork$ cat test.cxx #include <arm_neon.h> #include <arm_acle.h> #define GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) #if (GCC_VERSION >= 40800) && (GCC_VERSION < 50000) inline poly128_t VMULL_P64(poly64_t a, poly64_t b) { return __builtin_aarch64_crypto_pmulldi_ppp (a, b); } inline poly128_t VMULL_HIGH_P64(poly64x2_t a, poly64x2_t b) { return __builtin_aarch64_crypto_pmullv2di_ppp (a, b); } #else # define VMULL_P64(a, b) vmull_p64(a, b) # define VMULL_HIGH_P64(a, b) vmull_high_p64(a, b) #endif int main(int argc, char* argv[]) { const poly64_t a1={0x9090909090909090}, b1={0xb0b0b0b0b0b0b0b0}; const poly8x16_t a2={0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0xa0,0xa0,0xa0,0xa0,0xa0,0xa0,0xa0,0xa0}, b2={0xc0,0xc0,0xc0,0xc0,0xc0,0xc0,0xc0,0xc0,0xe0,0xe0,0xe0,0xe0,0xe0,0xe0,0xe0,0xe0}; const poly128_t r1 = VMULL_P64(a1, b1); const poly128_t r2 = VMULL_HIGH_P64((poly64x2_t)(a2), (poly64x2_t)(b2)); return 0; } ********** $ cat /proc/cpuinfo Processor : AArch64 Processor rev 3 (aarch64) processor : 0 processor : 1 processor : 2 processor : 3 processor : 4 processor : 5 processor : 6 processor : 7 Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 CPU implementer : 0x41 CPU architecture: AArch64 CPU variant : 0x0 CPU part : 0xd03 CPU revision : 3 Hardware : HiKey Development Board ********** $ gcc --version gcc (Debian/Linaro 4.9.2-10) 4.9.2 Copyright (C) 2014 Free Software Foundation, Inc. $ lsb_release -a No LSB modules are available. Distributor ID: Debian Description: Debian GNU/Linux 8.9 (jessie) Release: 8.9 Codename: jessie

7 years, 9 months

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[ACTIVITY] 24 - 28 July

by Peter Smith

4 day week. [TCWG-614] Range Extension Thunks - Rebased due to upstream refactoring - Pinged but no upstream review progress [Compiler-rt] Clang no longer always uses base PCS for all the builtins it expands such as the _Complex helpers. - Added tests to make sure RTABI 4.1.2 Floating Point helpers all use softfp in Clang D35538 and llvm D35904. - Reviewer pointed out useful script update_llc_test_checks.py that can simplify writing of llc tests. Well worth checking out [LLD] Looks like lld use in Android may be becoming more likely, major blocking feature is lack of Cortex-A53 erratum fix 843419. - I've commented on the upstream PR https://bugs.llvm.org/show_bug.cgi?id=33463 - I've written some test cases and have started a prototype implementation Submitted Linaro Connect presentation proposal for Functional Safety and Development tools. Plans: In priority order: - range extension thunks - Cortex-A53 843419 - Compiler-rt

7 years, 9 months

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[ACTIVITY] 24 - 28 July 2017

by Diana Picus

== Progress == * TCWG-1205 - Minor tweaks to Jenkins LLVM jobs [1/10] - Sent a few patches to make the Jenkins jobs more friendly and/or fix them for new changes in the upstream release script * TCWG-1206 - Investigate timeouts on buildbots [1/10] - Had some mysterious timeouts on some of the buildbots - Didn't manage to reproduce, will keep an eye out in case it happens again * TCWG-1199, 1200 - LLVM 5.0.0 for ARM and AArch64 [1/10] - RC1 is out, there are some failures in some libunwind and sanitizer tests; reported upstream * TCWG-1194 - [ARM GlobalISel] Support simple, static globals [4/10] - Committed some simple stuff and sent a patch for upstream review * TCWG-1209 - [MIR] Print ARM constant pools [1/10] - Printing target-specific constant pools is trivial, but testing is a bit problematic - All current MIR tests read in and then print out the same MIR, which means that we'd have to add support for target-specific constant pools in the parser as well - This is complicated by the fact that at a first glance the parser doesn't seem to handle any other target-specific stuff and I'm not sure it's ok to pull ARMConstantPool into it * Misc [2/10] - Mailing lists, code reviews, meetings == Plan == * Figure out what to do about TCWG-1209 * More code reviews and global isel

7 years, 9 months

1
0
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[ACTIVITY] 17 - 21 July

by Yao Qi

# Progress # * TCWG-1159,New design of GDB/GDBserver target description. [1/10] Commit one patch of v3. No review comments. Usually it means I don't review patches, so other people don't review my patches. * PR 21555. [3/10] Think it again, and fix it with a better approach. Patches are posted. * PR 21717. [2/10] Fix a bug on getting/setting FPSCR on VFPv2. I am surprised that we don't find it before. Testing patches. * TCWG-1162, Test GDB+OpenOCD with AArch64 boards. [1/10] Blocked by OpenOCD bugs. Chat with OpenOCD maintainer to make sure these bugs are opened in the right place. * TCWG-561, [3/10] I finish the patches, but not confident because I use copy-and-swap idiom for the first time. Need more time to bake it, write unit tests, etc. Maybe, still need to read "More effective C++" further. * TCWG-1162, Test GDB+OpenOCD with AArch64 boards. Blocked by OpenOCD bugs. Chat with OpenOCD maintainer to make sure these bugs are opened in the right place. Matthew (who contributed OpenOCD AArch64) pinged me on irc, but he lost connection immediately. Probably, he contact me for the OpenOCD bugs. * Think about presenting GDB target description work in Linaro SFO17, may add some SVE stuff if possible, to make it more attractive. # Plan # * TCWG-1159, * PR 21717, 21555, * TCWG-561, * Register the presentation for Linaro SFO17, -- Yao Qi

7 years, 9 months

1
0
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[ACTIVITY] 17 - 21 July 2017

by Diana Picus

== Progress == * [ARM GlobalISel] Support globals [6/10] - This is going to be very hairy because of all the different relocation models (PIC, ROPI etc), differences between ELF and MachO, and differences between targets with MOVT or without it - Started adding support for simple, statically linked globals, it might take me a while to get all the pseudoinstructions right even for this simple case * Misc [4/10] - Meetings, mailing lists, code reviews, buildbots == Plan == * More GlobalISel * More code reviews

7 years, 9 months

1
0
0 0

[ACTIVITY] 17-21 July 2017

by Christophe Lyon

== Progress == * Infrastructure/validation: - minor fixes in the release jobs * Benchmarking: - fixes on reporting scripts - using more iterations didn't produce more stable results (still noise) - trying to reboot the boards before running the benchs * GCC upstream validation: - further reduced noise ("random" pass/failures) - sent a patch to fix an aarch64 problem with -mstrict-align * misc (conf-calls, meetings, emails, ....) == Next == Holidays until August 21st

7 years, 9 months

1
0
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[ACTIVITY] 10 - 14 July 2017

by Peter Smith

[TCWG-614] Range Thunks Finally managed to get some review on the entirety of the Range Thunks patches. Have reorganised the patches and wrote some documentation to make it easier to review. Responded to all review comments so far. Compiler-rt A long tail of frustration. Managed to get a hello world semi-hosting test case running on the latest QEMU running newlib-nano. This was much more difficult than I expected due to: - The semihosting startup code of newlib does a semi-hosting call for top of memory regardless of whether the heap and stack location have been identified in a linker-script. - The QEMU semihosting response to top of memory is not helpful leaving the stack location in an invalid memory location (latest QEMU requires emulation of a board and not a generic machine) - QEMU doesn't data-abort when writing to a stack location, so my return address is helpfully read back as 0x0 Worked around by providing a large enough memory size to QEMU that the semihosting call for top of memory returns 0, allowing newlib to use the values in the linker script. Will probably need to spend some time to write my own startup code that just uses the linker script for the heap and stack. Building compiler-rt for v6-m and v7-m has been much more difficult than I expected as well. I've managed to find a configuration that works, although it relies on some experimental work in moving compiler-rt to the runtimes directory. Plans for next week: - LLD is top priority - Get testing for compiler-rt working via qemu on v7-m, the recipe that works for build does not support testing. I've got to either extract the cmake magic flags or find a way to plumb through the runes that make the tests work to the recipe I've got. - On holiday Thursday, Friday and the following Monday

7 years, 10 months

1
0
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[ACTIVITY] 10-13 July 2017

by Christophe Lyon

* Short week (Friday off) == Progress == * Infrastructure/validation: * Benchmarking: - production scripts are now up-to-date, still observing noise on some benchmarks - fixed a couple of small issues with the scripts * GCC upstream validation: - working on further reducing noise ("random" pass/failures) - reported/fixed a few regressions - committed testsuite patch with de-require-stack-check - looking at a problem with unaligned accesses * misc (conf-calls, meetings, emails, ....)

7 years, 10 months

2
1
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[ACTIVITY] 10 - 14 July 2017

by Prathamesh Kulkarni

== This Week == * PR78736 (2/10) - Submitted patch upstream * type-promotion (3/10) - Scheduling path-splitting before type-promotion fixes the regression with path-split-1.c - Created patch to fix issues with type-promotion interfering with widening_mul and bswap optimizations * malloc-propagation (4/10) - Updated patch, passes bootstrap+test on x86_64 - Working through ICE's with lto-bootstrap * Misc (1/10) - Meetings

7 years, 10 months

1
0
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[ACTIVITY] 10 - 14 July 2017

by Diana Picus

== Progress == * TCWG-1187 - [ARM GlobalISel] Support G_FCMP for s64 [5/10] - Committed upstream - Also refactored the existing code a bit * TCWG-1190 - [ARM GlobalISel] Support G_BR and G_BRCOND [2/10] - Committed upstream * TCWG-1191 - Test zorg patch [1/10] - Test a patch for running the test-suite with the CMake producer on the buildbots * Misc [3/10] - Meetings, mailing lists, code reviews, buildbots == Plan == * More GlobalISel * More code reviews

7 years, 10 months

1
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[ACTIVITY] 10 -14 July

by Yao Qi

# Progress # * TCWG-1159,New design of GDB/GDBserver target description. [2/10] v3 are posted, after fixing some regressions introduced by improper merge. No comments from upstream yet. * PR 21555. [2/10] Has already a fix, but I am not satisfied. Post an RFC for a discussion in general. My fix is to fix each GDB backend one by one, while my RFC is about fixing it in GDB core side. * TCWG-1162, Test GDB+OpenOCD with AArch64 boards. [4/10] OpenOCD doesn't support semi-hosting, so I pass --specs=nosys.specs to aarch64-none-elf gcc, but linker can't find a symbol from newlib. Looks nobody tests aarch64-none-elf gcc with --specs=nosys.specs before. Hack in newlib here and there, and get compiler/linker happy. I can download code to HiKey via OpenOCD, but "continue" becomes "single step". Open two OpenOCD bugs upstream. My work is blocked by OpenOCD bugs. * Upstream patches review. [2/10] ** Review sparc64 adi patch v3, ** Investigate and review the patch fixing GDB crashes on amd64-linux, ** Review Alan H.'s patch, and discuss on the design, ** Some conversation with Maciej on MIPS16 and microMIPS disassembler, because my disassembler rework breaks MIPS. # Plan # * PR 21555, * TCWG-1159 * TCWG-561, # Issue # * TCWG-1162 is blocked by OpenOCD bugs. -- Yao Qi

7 years, 10 months

1
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[ANNOUNCE] Linaro GCC 6 and 7 2017.07 source snapshots

by Yvan Roux

The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2017.07 snapshot of Linaro GCC 6 and 7 source packages. o The GCC 7 series introduced an ABI change for ARM targets by fixing a bug (present since GCC 5, see link below) that affects conformance to the procedure call standard (AAPCS). The bug affects some C++ code where class objects are passed by value to functions and could result in incorrect or inconsistent code being generated. If the option -Wpsabi is enabled (on by default) the compiler will emit a diagnostic note for code that might be affected by this ABI change. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77728 For an explanation of the changes please see the following website: https://gcc.gnu.org/gcc-7/changes.html o Linaro GCC 7 monthly snapshot[1] is based on FSF GCC 7.1+svn250046 and includes performance improvements and bug fixes backported from mainline GCC. The contents of this snapshot will be part of the 2017.08 stable[2] quarterly release. This snapshot tarball is available on: http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.1-2017.07/ Interesting changes in this GCC source package snapshot include: * Updates to GCC 7.1+svn250046 * Backport of [Bugfix] [AArch32] PR target/71778 ICE using non-constant argument to Neon intrinsic that requires constant arguments * Backport of [Bugfix] [AArch64] PR target/71663 aarch64 Vector initialization can be improved slightly * Backport of [AArch32] Enable FP16 vector arithmetic operations * Backport of [AArch32] Fix ARM bootstrap failure due to an odd warning * Backport of [AArch32] Modify idiv costs for Cortex-A53 * Backport of [AArch64] Add combine pattern for storing lane zero of a vector * Backport of [AArch64] Add HF vector modes to lane-to-lane INS pattern * Backport of [AArch64] Add prefetch configuration to aarch64 backend * Backport of [AArch64] Adjust costs so udiv is preferred over sdiv when both are valid * Backport of [AArch64] Allow CMP+SHIFT when comparing with zero * Backport of [AArch64] Allow const0_rtx operand for atomic compare-exchange patterns * Backport of [AArch64] Emit tighter strong atomic compare-exchange loop when comparing against zero * Backport of [AArch64] Enable -fprefetch-loop-arrays at given optimization level * Backport of [AArch64] Fix -fstack-check with really big frames on aarch64 * Backport of [AArch64] Fix subreg bug in scalar copysign * Backport of [AArch64] Peephole for SUBS * Backport of [AArch64] Simplify call, call_value, sibcall, sibcall_value patterns * Backport of [AArch64] Update prefetch tuning parameters for qdf24xx. * Backport of [AArch64] Use SUBS for parallel subtraction and comparison with immediate * Backport of [Misc] Add debug counter for loop array prefetching * Backport of [Misc] Improve debug output of loop data prefetching * Backport of [Cleanup] [AArch32] Complete legend for ARM register allocation in arm.h * Backport of [Cleanup] [AArch32] Fix comment for cmse_nonsecure_call_clear_caller_saved * Backport of [Cleanup] [AArch32] Fix typo in comment in arm_expand_prologue * Backport of [Testsuite] [AArch32] Add MOVT testing for ARMv8-M Baseline * Backport of [Testsuite] Add dg-require-stack-check * Backport of [Testsuite] Fix stack-check-1.c o Linaro GCC 6 monthly snapshot[1] is based on FSF GCC 6.4+svn250045 and includes performance improvements and bug fixes backported from mainline GCC. This snapshot contents will be part of the 2017.08 stable[2] quarterly release. This snapshot tarball is available on: http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.4-2017.07/ Interesting changes in this GCC source package snapshot include: * Updates to GCC 6.4+svn250045 * Linaro BZ #3040 -- CC1 and cc1plus cannot convert UTF-8: Regenerate intl configure * Backport of [AArch64] Fix -fstack-check with really big frames on aarch64 * Backport of [Testsuite] Add dg-require-stack-check * Backport of [Testsuite] Fix stack-check-1.c o 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 * Interested in commercial support? inquire at "Linaro support": mailto:support@linaro.org [1]. Source package snapshots are defined when the compiler is only put through unit-testing and full validation is not performed. [2]. Stable source package releases are defined as releases where the full Linaro Toolchain validation plan is executed.

7 years, 10 months

1
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[ACTIVITY] 3 - 7 July 2017

by Peter Smith

Achievements: Some progress on Range Thunks. [TCWG-614] - I have all the enabling patches that allow assignAddresses() to be run multiple times committed. - Need review for the actual range thunks implementation itself. Compiler-rt [TCWG-1156] - Clang (as opposed to llvm) is assuming that all builtins for ARM are mandated to have a soft-float interface. I have a tentative patch but need to test it a bit more first. - Found out a bit more about the structure of how compiler-rt, and why it behaves differently when I use the default target and auto-detection of toolkit as opposed to supplying the target via options. -- There is quite a bit of hidden magic and hacks going on in the default case, some of it I don't think is quite right. For example Compiler-rt seems to conflate architecture with abi. Set myself the task of getting compiler-rt tests running on v6-m with testing on qemu. - v6-m is the only auto-detected default target that I haven't been able to reproduce results on. - A review claimed that tests had been run on qemu, and I'm now trying to work out how to reproduce this with clang and an arm-none-eabi sysroot. -- Not having a lot of luck so far, latest qemu only supports emulation of 2 cortex-m3 dev-boards and I have yet to make a standalone program that works [*] -- I'm not looking forward to plumbing in the options to make the arm-none-eabi testing work. [*] I thought I would try semi-hosting first, but it turns out the default semihosting startup code supplied with arm-none-eabi replaces my heap and stack locations with a semi-hosting call to get top of memory which qemu gives an inappropriate result for a dev-board emulation with non contiguous memory. Would like to see if I can get this working via a quick experiment to rewrite the start-up code, although for the full tests I may fall back to retargeting the IO via an emulated serial port. Plans: - First priority is range thunks for lld - Second priority is getting a v6m test of compiler-rt to check for any latent problems - Submit clang patch when I know it works for all the supported platforms - Look into v7-m support, particularly v7-m + single precision floating point.

7 years, 10 months

1
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[ACTIVITY] 03 - 07 July

by Yao Qi

# Progress # * TCWG-1159, New design of GDB/GDBserver target description. [7/10] It takes me a lot of time making the patch series v3 work, to address review comments, to fix regressions, and to make sure each commit doesn't break build. Almost done. Looks 30 patches in one series is my limit, and wonder how does other people manage large patch series. * Help people runing GDB tests, and get some fails. It turns out we encounter PR 21555. [1/10] * Misc, [2/10] # Plan # * TCWG-1159 * PR 21555 * TCWG-561, -- Yao Qi

7 years, 10 months

1
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[ACTIVITY] Week 27

by Yvan Roux

== Progress == o Linaro GCC/Validation (6/10) * libgomp/mingw patch: Upstream review still pending * pc-relative-literal-loads patch for GCC 6 branch: Upstream review still pending reviewed fxi for trunk. * GCC 7 2017.07 backports: done * Prepared GCC 6 and 7 branch merges * Linaro bugzilla #3102: - reduce testcase for a different issue - investigation on-going o Misc (3/10) * Various meetings and discussions. * Office move == Plan == o 2017.07 snapshots and on-going bugzillas

7 years, 10 months

1
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[ACTIVITY] 3 July - 7 July 2017

by Prathamesh Kulkarni

== This Week == * PR78736 (4/10) - Improved patch to not warn for enums with equal value ranges - Caused fallouts in libgomp and libgfortran - Large kernel fallout! * type promotion (5/10) - Looking at interference between path-splitting and type-promotion optimizations - miscompilation of memcpy-bi.c on * Misc (1/10) - Meetings == Next Week == - Continue ongoing tasks

7 years, 10 months

1
0
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[ACTIVITY] 3-7 June 2017

by Christophe Lyon

== Progress == * Infrastructure/validation: - abe patch for bug #3040 committed, now we need to fix regression-detection because it builds a toolchain that does not support this fix (lacks a gcc patch) - upgrade of dejagnu used for binutils validation fixed the random errors we were seeing * Benchmarking: - production scripts were not up-to-date, but the new ones have a conflict/dependency on ntp * GCC upstream validation: - working on further reducing noise ("random" pass/failures) - reported/fixed a few regressions - committed testsuite patch with de-require-stack-check * misc (conf-calls, meetings, emails, ....)

7 years, 10 months

1
0
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[ACTIVITY] 3 - 7 July 2017

by Diana Picus

== Progress == * TCWG-1155 - Move ASAN 39bit bot to GlobalISel [1/10] - The bot is finally upstream and working well * TCWG-1172 - [ARM GlobalISel] Support G_FCMP for s32 [7/10] - Committed support for 32-bit floating point compares, both hardware and software * TCWG-1141 - Add "push" capability [1/10] - Finally committed llvm-push * Misc [1/10] - Mailing lists, meetings, buildbots == Plan == * TCWG-1187 - [ARM GlobalISel] Support G_FCMP for s64

7 years, 10 months

1
0
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[ACTIVITY] 26 - 30 June 2017

by Peter Smith

== Activity == - Rebased and posted for review all my range-thunks work for LLD as there had been some interest from some individuals on IRC in trying out the patch. -- Seems to work for them -- Hoped that this might provoke upstream into looking and reviewing the patches but no such luck. - Landed the patch that sets _GLOBAL_OFFSET_TABLE_ so that FreeBSD can link on ARM - Some other small lld patches - Investigations into whether an X86 patch might affect CFI generation for AArch64. Spent some time banging my head against the compiler-rt build system to try and see if I can get a cross-compiled build and test run on Qemu when my compiler-rt target != the default target (i.e. I want to build clang with ARM and AArch64 targets and cross-build and test all the ARM compiler-rt targets from that) - Thwarted by what seems to be inconsistent decisions about auto-detection of options, what is an architecture, target, sub-target and abi. - By passing in all auto-generated options by steam I'm still hitting some problems with some tests that have an external assembly file. Found numerous other small inconsistencies that I'll need to write up. == Plans == - Ping the Range Thunks reviews again. - Compiler-rt Aim to get to the point where I can write a coherent mail to llvm-dev explaining what I think is wrong and what I think needs changing.

7 years, 10 months

1
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[ACTIVITY] Week 26

by Yvan Roux

== Progress == o Linaro GCC/Validation (7/10) * Fixed AArch64 GCC options documentation ARM part clean-up on-going * libgomp/mingw patch: Upstream review pending * pc-relative-literal-loads patch for GCC 6 branch: Upstream review pending reviewed fxi for trunk. * Following upstream discussions on stack clash CVE: - One AArch64 specific commit done (backport in our branch on-going) - Fix still under discussion upstream, nothing committed yet * catching-up with re-association work * libunwind support o Misc (3/10) * Various meetings and discussions. == Plan == o backports for 2017.07, CVE, ...

7 years, 10 months

1
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[ACTIVITY] 26 - 30 June 2017

by Prathamesh Kulkarni

== This Week == * Type promotion (6/10) - Created patch to fix ICE with pr81083.c on ppc64 - Investigated mis-compilation of memcpy-bi.c on ppc64 * Malloc propagation (1/10) - Working on patch based on feedback received. * Public Holiday (2/10) * Misc (1/10) - Meetings == Next Week == - Type promotion: Look at miscompilation bug, and investigate performance regression for path splitting optimization - Malloc propagation

7 years, 10 months

1
0
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[ACTIVITY] 26 - 30 June 2017

by Diana Picus

== Progress == * TCWG-1155 - Move ASAN 39bit bot to GlobalISel [1/10] - Moved to the public silent master, ready for the final move on Monday if it's stable until then * TCWG-1172 - [ARM GlobalISel] Support G_FCMP [5/10] - Most of the functionality is implemented, but I intend to do a lot of refactoring before committing * TCWG-1174 - [ARM GlobalISel] Support G_SELECT [1/10] - Committed upstream * Misc [3/10] - Mailing lists, buildbots, discussions == Plan == * Wrap up TCWG-1172 * More GlobalISel * More code reviews

7 years, 10 months

1
0
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[ACTIVITY] 26 - 30 June

by Yao Qi

# Progress # * TCWG-1159, New design of GDB/GDBserver target description. [4/10] People agree on the direction this patch series goes to! Still need to polish v3. Started to write v3 to address comments, split patches, and rebase patches, etc... My Cauldron talk "A flexible GDB target description for processor diversity " is registered. * TCWG-561, Handle unavailable memory during frame unwinding. [2/10] Decided how to do it, coding. * Investigate the usage of obstack in GNU toolchain. [1/10] We recently add a convenient class wrapper for obstack in GDB, and I think it is better to "upstream" it to inlcude/ so that GCC can use it as well. Did some archeology on C++ transition in GCC, find some difficulties. Still good to know some GCC maintainers' preference on C++. * Travel, [1/10] ** US EVUS enrollment, to update my US visa information. ** Figure out the Cauldron flight. * Misc, meeting, [2/10]. # Plan # * TCWG-1159, patch v3. -- Yao Qi

7 years, 10 months

1
0
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[ACTIVITY] 26-30 June 2017

by Christophe Lyon

== Progress == * Infrastructure/validation: - iterated on patch for bug #3040: 1 abe patch to use libiconv, 1 linaro-gcc-6 patch (partial backport to make enable-nls and libiconv work together) * Benchmarking: - noticed large differences in bench results from one run to another while looking at "deprecated it block" patch - trying less aggressive configuration * GCC upstream validation: - working on further reducing noise ("random" pass/failures) - reported/fixed a few regressions - committed testsuite patch (for arm-neon flags) * misc (conf-calls, meetings, emails, ....)

7 years, 10 months

1
0
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[ACTIVITY] 19 -23 June

by Yao Qi

# Progress # * TCWG-1159, New design of GDB/GDBserver target description. [3/10] Update patches to address review comments. Commit three patches. Need to post V3. * TCWG-561, Handle unavailable memory during frame unwinding. [2/10] Think about the plan. * Upstream patches review. [3/10] ** Review IBM kernel-awareness patches. ** Review sparc64 adi patch. ** Review Alan's patch on removing MAX_REGISTER_SIZE. Evaluate other better but expensive approach. * Misc, [2/10] Write a STL container allocator which uses stack instead of heap. Underestimate the complexity of C++. Need to replace some std::vector with my vector with stack_allocator in GDB. It should be also useful to Alan. # Plan # * TCWG-1159, send v3. * TCWG-561, Handle unavailable memory during frame unwinding. -- Yao Qi

7 years, 10 months

1
0
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[ACTIVITY] 19 - 23 June 2017

by Peter Smith

[TCWG-614] Range extension thunks - No progress on upstream reviews from maintainers this week I have received some interest on IRC and on at least one of the reviews from other people wanting the feature so I'm hoping that this may speed up the process. - I've committed to rebasing and posting the full patch-set for review so that interested people can take it and test. PR31159 Tracked down why LLD wasn't correctly linking ARM BSD port - lld only provides a dummy absolute value for _GLOBAL_OFFSET_TABLE_ - llvm-mc doesn't transform .word _GLOBAL_OFFSET_TABLE_ - . into R_ARM_BASE_PREL like GNU as does, this relocation doesn't use the value of _GLOBAL_OFFSET_TABLE_ . Instead we get R_ARM_REL32 which needs _GLOBAL_OFFSET_TABLE_ to be set correctly. PR335511 - Patch accepted upstream will commit today Misc: - lld consultancy for Android - Help to fix build error on clang for ARM colleague - Query on lld behaviour with respect to .ARM.extab, I think lld behaviour is within spec, but it may be producing larger files so probably enough to argue the case for a small patch. -No time to spend on compiler-rt this week Plans: - Post all the range-thunk patches for the people interested in it. - Commit patches accepted last week

7 years, 10 months

1
0
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[ACTIVITY] 19 - 23 June 2017

by Diana Picus

== Progress == * Out of office on Friday [2/10] * TCWG-1155 - Move ASAN 39bit bot to GlobalISel [1/10] - Committed a quick fix and started seeing green builds on this, we can probably move it upstream soon * TCWG-836 - Replace D01s by Scaleway boards [2/10] - Set up a selfhost buildbot on one of the Scaleway boards - It is very, very slow, I did some performance experiments but there's probably more that can be attempted here * TCWG-1172 - [ARM GlobalISel] Support G_FCMP [2/10] - The hard float part is implemented, fiddling with the soft float now - Forked some of that work into a different story for supporting G_SELECT * TCWG-1174 - [ARM GlobalISel] Support G_SELECT [1/10] - In progress * Misc [2/10] - Mailing lists, code reviews - TCWG-1136 - LLVM 4.0.1 - Spun up and uploaded the final release candidate - TCWG-1177 - Investigate failure on clang-cmake-aarch64-lld - Bisected and reverted a commit upstream == Plan == * More GlobalISel * More buildbots * More code reviews

7 years, 10 months

1
0
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[ACTIVITY] Week 25

by Yvan Roux

== Progress == o Linaro GCC/Validation (7/10) * Prepared a fix for libgomp/mingw build issue. Submitted upstream * Analysed ubuntu bug report on unsupported relocations: - https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1695093 - Identified it as upstream PR 79041 - Fix submitted upstream * Following upstream discussions on stack clash CVE - Releases re-spins will done once the issue will be fixed upstream o Misc (3/10) * Various meetings and discussions. == Plan == o CVE, on-going patches and infra

7 years, 10 months

1
0
0 0

[ACTIVITY] 19-23 June 2017

by Christophe Lyon

== Progress == * Infrastructure/validation: - looking at bug #3040 * Benchmarking: * GCC upstream validation: - working on further reducing noise ("random" pass/failures) - reported a few regressions - sent a couple of patches (testsuite, ARM_FEATURE_COPROC) * misc (conf-calls, meetings, emails, ....)

7 years, 10 months

1
0
0 0

[ACTIVITY] Week 24

by Yvan Roux

== Progress == o Linaro GCC/Validation (7/10) * backports and branch merges for linaro branches 5, 6 and 7 * released GCC 6 and 7 2017.06 sources snapshots * Fxed GCC 5 branch merge * analyzed various infrastructure instabilities * Mingw32 libgomp build issue due to configure issue, working on a fix o Misc (3/10) * Various meetings and discussions. == Plan == o complete GCC 5 sources snapshot o Fix libgomp problem and continue on re-association

7 years, 11 months

1
0
0 0

[ACTIVITY] 12 - 16 June 2017

by Diana Picus

== Progress == * TCWG-1172 - [ARM GlobalISel] Support G_FCMP [2/10] - In progress * TCWG-1168 - [ARM GlobalISel] Support G_ICMP [3/10] - Done, going to commit upstream * TCWG-1136 - LLVM 4.0.1 [1/10] - Spinned up rc3 * TCWG-1155 - Move ASAN 39bit bot to GlobalISel [2/10] - Investigated the timeouts in the test-suite and reported upstream - Sent a patch to increase the threshold for those tests on AArch64, waiting for feedback * TCWG-1166 - Investigate Clang diag-flags.cpp failure [1/10] - Bisected and reverted upstream * Misc [1/10] - Mailing lists, meetings etc == Plan == * Wrap up TCWG-1168 and 1172

7 years, 11 months

1
0
0 0

[ACTIVITY] 12 - 16 June 2017

by Yao Qi

# Progress # * TCWG-1159, New design of GDB/GDBserver target description. [1/10] Finish writing the commit log and changelog. Patches are posted. * TCWG-1167, Test AArch32 GDB on AArch64 Linux kernel. [3/10] Such configuration shows one regression. It is whether condition checked failed UDF triggers Undefined Instruction Exception or not. GDB's assumption is NO, but Peter M. told me that it is implementation defined, so GDB has to handle both. * gdb/objdump disassembler unification. Done. [1/10] Commit the the left over patch. * Pick up Alan H.'s C++ template patch, and post it again. Learned a lot on C++ 11 default template parameter and SFINAE. Patch is committed. * Upstreams review. [3/10] ** Encourage people to build GDB with CLANG. Resist the objections from other people, and write the "policy" about using other compilers to build GDB. ** Review IBM's kernel-awareness v4 patches. * Misc, [2/10]. # Plan # Get chance to back to my interrupted works: * TCWG-333, Fix gdb.base/func-ptrs.exp fails in thumb mode. * TCWG-561, Handle unavailable memory during frame unwinding. -- Yao Qi

7 years, 11 months

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[ACTIVITY] 12-16 June 2017

by Christophe Lyon

== Progress == * Infrastructure/validation: - still some random results, and still ssh connexion problems with several machines - improving abe-bisect script * Benchmarking: * GCC: - 'deprecated IT-blocks' patch: looking at the generated code to understand the regressions * GCC upstream validation: - reported a couple of regressions on trunk, a few bisects, helped validating some ARM patches - working on further reducing noise ("random" pass/failures) - include qemu traces in the logs when a testcase aborts, to help debug * misc (conf-calls, meetings, emails, ....)

7 years, 11 months

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[ANNOUNCE] Linaro GCC 6 and 7 2017.06 source snapshots

by Yvan Roux

The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2017.06 snapshot of Linaro GCC 6 and 7 source packages. o The GCC 7 series introduced an ABI change for ARM targets by fixing a bug (present since GCC 5, see link below) that affects conformance to the procedure call standard (AAPCS). The bug affects some C++ code where class objects are passed by value to functions and could result in incorrect or inconsistent code being generated. If the option -Wpsabi is enabled (on by default) the compiler will emit a diagnostic note for code that might be affected by this ABI change. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77728 For an explanation of the changes please see the following website: https://gcc.gnu.org/gcc-7/changes.html o Linaro GCC 7 monthly snapshot[1] is based on FSF GCC 7.1+svn249190 and includes performance improvements and bug fixes backported from mainline GCC. The contents of this snapshot will be part of the 2017.08 stable[2] quarterly release. This snapshot tarball is available on: http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.1-2017.06/ Interesting changes in this GCC source package snapshot include: * Updates to GCC 7.1+svn249190 * Backport of [Bugfix] [AArch32] PR target/71607 Fix ICE when loading constant * Backport of [Bugfix] [AArch64] PR target/80671 config/aarch64/cortex-a57-fma-steering.c:416: bad statement order * Backport of [Bugfix] PR tree-optimization/79697 unused realloc(0, n) not eliminated * Backport of [Bugfix] PR tree-optimization/80613 ICE in is_gimple_reg_type with -O2 * Backport of [AArch32] Add a new target hook to compute the frame layout * Backport of [AArch32] Add fuchsia support to libgcc * Backport of [AArch32] FreeBSD arm libgcc config.host * Backport of [AArch32] Model Cortex-A53 load forwarding * Backport of [AArch64] Accept more addressing modes for PRFM * Backport of [AArch64] Add aes and sha reservations for Thunderx2t99 * Backport of [AArch64] Add crc reservations for Thunderx2t99 * Backport of [AArch64] Improve float to int moves * Backport of [AArch64] Set jump alignment to 4 for Cortex cores * Backport of [AArch64] Tighten move constraints for symbolic operands * Backport of [Misc] Check the alternate cost model just as costs_lt_p * Backport of [Misc] Record equivalences for spill registers * Backport of [Testsuite] [AArch32] Only test tls-disable-literal-pool.c if target supports native TLS * Backport of [Testsuite] [AArch32] Replace absolute line numbers in gcc.target/arm * Backport of [Testsuite] [AArch64] Replace absolute line numbers in gcc.target/aarch64 o Linaro GCC 6 monthly snapshot[1] is based on FSF GCC 6.3+svn249140 and includes performance improvements and bug fixes backported from mainline GCC. This snapshot contents will be part of the 2017.08 stable[2] quarterly release. This snapshot tarball is available on: http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.06/ Interesting changes in this GCC source package snapshot include: * Updates to GCC 6.3+svn249140 o 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 * Interested in commercial support? inquire at "Linaro support": mailto:support@linaro.org [1]. Source package snapshots are defined when the compiler is only put through unit-testing and full validation is not performed. [2]. Stable source package releases are defined as releases where the full Linaro Toolchain validation plan is executed.

7 years, 11 months

1
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[ACTIVITY] 05 - 09 June 2017

by Peter Smith

== Progress == LLD - Committed refactoring patches to enable long range thunks. This should unblock progress towards upstreaming patches. - Rebased and sent out for review first patches in series. Expecting slow but steady progress as I hope to not need much more large scale refactoring. == Plans == Compiler-rt - Investigated cross-compilation and testing via qemu user mode emulation. It seems to be possible to do so, although fiddly to set up Plans for this week: - LLD long range thunks - Build up a task list for compiler-rt - Likely take Friday on holiday

7 years, 11 months

1
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[ACTIVITY] Week 23

by Yvan Roux

== Progress == o Linaro GCC/Validation (7/10) * Completed and released 7.1-2017.05 release * Preparing backports for 2017.06 source snapshot * Checked upstream status w/r to merge regression observed: issue fixed * Investigating mingw32 libgomp build issue * Switched abe/stable to abe/tested branch o Misc (3/10) * Various meetings and discussions. == Plan == o 2017.06 snapshot o Fix libgomp problem and continue on re-association

7 years, 11 months

1
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[ACTIVITY] 5 - 9 June 2017

by Diana Picus

== Progress == * [ARM GlobalISel] Support AND, OR, XOR [TCWG-1157] [2/10] - Committed upstream * [ARM GlobalISel] Fix arm-irtranslator test [TCWG-1146] [1/10] - Committed upstream * [GlobalISel] Remove the G_SEQUENCE node [TCWG-1138] [1/10] - Removed the G_SEQUENCE node from the ARM backend * [ARM GlobalISel] Support mod [TCWG-1105] [2/10] - Have some patches downstream for handling this - Not sure it's the best way to go, so I've been asking for some guidance before moving forward with it * [Helpers] Add "push" capability [TCWG-1141] [2/10] - Almost ready, will send a pull request next week * Misc [2/10] - Mailing lists, meetings, buildbot monitoring - Opened a backport request for Ubuntu Xenial binutils for an lld bug that is affecting our buildbots == Plan == * More GlobalISel * Check if our internal buildmaster works now, try to setup some buildbots

7 years, 11 months

1
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[ACTIVITY] 05 - 09 June 2017

by Yao Qi

* One day off on Monday [2/10] # Progress # * GDB 8.0 is released! TCWG-1050. Done. * GDB target description changes. [5/10] It is needed for adding SVE in GDB. Change GDB target description, and start from x86-linux. The more I write the code, the more right I believe the change is. Patches are done, but still need to complete commit log, changelog, and polish the code. Write an abstract about it for GNU Cauldron. Spend some time thinking about a good title. * Upstreams review. [1/10] ** Review some Alan H.'s patches. ** Review the OpenRISC patches. * Misc, [2/10] ** Follow up the OpenOCD work. Create two epics for the following work. ** Meetings. # Plan # * Post my target descriptions changes upstreams. * Post some leftover patches about GDB and OBJDUMP disassembler unification. -- Yao Qi

7 years, 11 months

1
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[ACTIVITY] 5-9 June 2017

by Christophe Lyon

Short week (Monday off) == Progress == * Infrastructure/validation: - reviews - noticed ~random results in one binutils test on apm/tk1, didn't understand the problem yet. Manual runs all succeeded :( * Benchmarking: - comparison script/job - reviews * GCC: - benchmarking old 'deprecated IT-blocks' patch. Seems to confirm large regressions on some benchmarks, and non-functional on at least one bench. - sent updated testsuite patch to support -march=armv5t runtestflags after dejagnu update - testing: checked a config --with-cpu=arm10tdmi instead of forcing -march-armv5t via runtestflags, to see how the validation results differ: not much, so if my previous patch is not accepted, I might change the configurations I use for non-regression testing - reported a couple of regressions on trunk * misc (conf-calls, meetings, emails, ....)

7 years, 11 months

1
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[ANNOUNCE] Linaro Binary Toolchain Release GCC 7.1-2017.05

by Yvan Roux

The Linaro Binary Toolchain ============================ The Linaro GCC 7.1-2017.05 Release is now available. *Notice*: GCC 7.1 ABI change for arm*-*-* targets, and note for aarch64*-*-* targets >From GCC 7.1 release notes: On ARM targets (arm*-*-*), a bug introduced in GCC 5 that affects conformance to the procedure call standard (AAPCS) has been fixed. The bug affects some C++ code where class objects are passed by value to functions and could result in incorrect or inconsistent code being generated. This is an ABI change. If the option -Wpsabi is enabled (on by default) the compiler will emit a diagnostic note for code that might be affected. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77728 GCC 5 and GCC 6 releases will continue to be affected by the ABI bug, since changing ABI in these releases is not practical. A warning enabled by -Wpsabi option was added to GCC 5 and GCC 6 toolchains to diagnose codebases that might be affected by the ABI bug. Additionally, this same bug was present in AArch64 backend in development versions of GCC 7. There was no releases of GCC with this bug present in AArch64 backend, therefore the release notes does not mention this. However, be advised that any code bases built with development versions of GCC 7 need to be recompiled with released version of GCC 7 to conform to ABI. For an explanation of GCC 7 series changes please see the following website: https://gcc.gnu.org/gcc-7/changes.html For help in porting to GCC 7 please see the following explanation: https://gcc.gnu.org/gcc-7/porting_to.html Download release packages from: (sources) http://releases.linaro.org/components/toolchain/gcc-linaro/7.1-2017.05/ (binaries) http://releases.linaro.org/components/toolchain/binaries/7.1-2017.05/ 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/ A description of the arm and AArch64 target triples can be found at: https://collaborate.linaro.org/display/TCWGPUB/ARM+and+AArch64+Target+Tripl… 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 7.1-2017.05 http://releases.linaro.org/components/toolchain/gcc-linaro/7.1-2017.05/ FSF glibc 2.25 (release/2.25) https://lists.gnu.org/archive/html/info-gnu/2017-02/msg00002.html Newlib 2.5 (newlib-2_5_0 tag) https://sourceware.org/ml/newlib/2016/msg01191.html GNU Binutils 2.28 (binutils-2_28-branch) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob_plain;f=bin… FSF GDB 8.0 (gdb-8.0-branch) https://sourceware.org/ml/gdb-announce/2017/msg00003.html Linaro toolchain package git branches are hosted at: http://git.linaro.org/toolchain NEWS for GCC 7 (as of Linaro GCC 7.1-2017.05) ============================================== * Performance related backports from the following snapshots have been included: Linaro GCC 7.1-2017.05. See the following Linaro GCC snapshots: http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.1-2017.05/ 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

7 years, 11 months

1
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[ACTIVITY] 29 May - 2 June 2017

by Peter Smith

Progress - Long range thunks Committed a couple of refactorings on .ARM.exidf and SHF_LINK_ORDER support. With luck final patch for SHF_LINK_ORDER will be approved next week Submitted patches to convert existing Thunk Implementation to use InputSectionDescriptions. Hopefully these ones are broken down into small enough parts for upstream to look at. - Tracked down https://bugs.llvm.org/show_bug.cgi?id=33136 libc++ failing ~100 tests with std::bad_cast exception when built in release mode. Was down to global-merge incorrectly merging globals that were not DSO local. Looks to have been fixed quickly - llvm-mc Helped out with D33436 review on how to do interworking branches in assembler D33492 accepted, will commit next week. Plans: - Long range thunks Continue with slow progress towards upstreaming - Investigate compiler-rt

7 years, 11 months

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[ACTIVITY] Week 22

by Yvan Roux

== Progress == o Linaro GCC/Validation (7/10) * Deployed 7.1 release candidate * Catching up with re-association development * Preparing switch to abe/tested branch o Misc (3/10) * Various meetings and discussions. == Plan == o release 7.1 2017.05 o Continue on re-association

7 years, 11 months

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[ACTIVITY] 29 May - 2 June 2017

by Diana Picus

== Progress == * [GlobalISel] AArch64 test-suite and self-host [TCWG-1074] [3/10] - Reported and investigated a codegen issue introduced by one of Quentin's patches, which was appearing while selfhosting with GlobalISel - Ran the test-suite and self-host again after it was fixed * [ARM GlobalISel] Add support for struct / array args [TCWG-1033] [3/10] - Committed the lowering part upstream - Still needs support in the rest of the pipeline but that will be a different issue * [Helper scripts] Add "push" capability [TCWG-1141] [1/10] - Started writing tests * Misc [3/10] - Meetings, mailing lists, babysitting the buildbots - [GlobalISel] Run precommit for Daniel's patch [TCWG-1142]: did another run for this - LLVM 4.0.1 [TCWG-1136]: ran rc2 on ARM and AArch64 == Plan == * [ARM GlobalISel] Fix arm-irtranslator test [TCWG-1146] * Replace D01s by Scaleway boards [TCWG-836] * More GlobalISel stuff

7 years, 11 months

1
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[ACTIVITY] 29 May-2 June 2017

by Christophe Lyon

== Progress == * Infrastructure: - improvements in binutils Jenkins jobs, to track regressions rather than always report 'failed'. Pass ratio can still be very low in some configs (eg arm-pe) * Benchmarking: - work around problems with many simultaneous ssh connexions for remote cross-compilation * GCC: - benchmarked old 'deprecated IT-blocks' patch. - reported a few regressions in trunk - looking at testsuite-isms: problems with some multilibs after dejagnu upgrade (where multilib flags are now prepended, rather than appended previously) * misc (conf-calls, meetings, emails, ....) == Next == * Short week (off Monday) * Benchmarking scripts * GCC

7 years, 11 months

1
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[ACTIVITY] 22 - 26 May 2017

by Peter Smith

Progress - Long range thunks Made some more progress on the refactoring needed to merge the representations for the script and non-script cases. Close to getting the .ARM.exidx sections converted. - Some thoughts on https://reviews.llvm.org/D33436 to do with ARM/Thumb interworking in the assembler. -- Discovered that gold and lld get the case of a relocation to a Thumb non STT_FUNC symbol with bit 0 clear wrong. Both linkers attempt to interwork (they shouldn't as the symbol is not STT_FUNC) but identify the symbol as ARM due to bit 0 being clear. Luckily these are corner cases only brought up by hand-written assembler. - Investigation into https://bugs.llvm.org/show_bug.cgi?id=33136 libc++ failing ~100 tests with std::bad_cast exception when built in release mode (clean upstream build uses debug). -- Reduced failing test to std::cout << std::endl; the std::bad_cast comes from an out of range index into a vector of available locales. -- Current thought is that this could be a codegen bug as I can only reproduce in Release (-O3) and not RelWithDebInfo (-O2). Plans for next week: - Long range thunks Make more progress on refactoring. Should get .ARM.exidx patches upstream, next step to convert long range thunks themselves. - Work on diagnosing PR33136.

7 years, 11 months

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[ANNOUNCE] Linaro Binary Toolchain Release-Candidate GCC 7.1-2017.05-rc1

by Yvan Roux

The Linaro Binary Toolchain ============================ The Linaro GCC 7.1-2017.05-rc1 Release-Candidate is now available. *Notice*: GCC 7.1 ABI change for arm*-*-* targets, and note for aarch64*-*-* targets >From GCC 7.1 release notes: On ARM targets (arm*-*-*), a bug introduced in GCC 5 that affects conformance to the procedure call standard (AAPCS) has been fixed. The bug affects some C++ code where class objects are passed by value to functions and could result in incorrect or inconsistent code being generated. This is an ABI change. If the option -Wpsabi is enabled (on by default) the compiler will emit a diagnostic note for code that might be affected. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77728 GCC 5 and GCC 6 releases will continue to be affected by the ABI bug, since changing ABI in these releases is not practical. A warning enabled by -Wpsabi option was added to GCC 5 and GCC 6 toolchains to diagnose codebases that might be affected by the ABI bug. Additionally, this same bug was present in AArch64 backend in development versions of GCC 7. There was no releases of GCC with this bug present in AArch64 backend, therefore the release notes does not mention this. However, be advised that any code bases built with development versions of GCC 7 need to be recompiled with released version of GCC 7 to conform to ABI. For an explanation of GCC 7 series changes please see the following website: https://gcc.gnu.org/gcc-7/changes.html For help in porting to GCC 7 please see the following explanation: https://gcc.gnu.org/gcc-7/porting_to.html Download release-candidate packages from: (sources) http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.1-2017.05-rc1/ (binaries) http://snapshots.linaro.org/components/toolchain/binaries/7.1-2017.05-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/ A description of the arm and AArch64 target triples can be found at: https://collaborate.linaro.org/display/TCWGPUB/ARM+and+AArch64+Target+Tripl… 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 7.1-2017.05-rc1 http://releases.linaro.org/components/toolchain/gcc-linaro/7.1-2017.05-rc1/ FSF glibc 2.25 (release/2.25) https://lists.gnu.org/archive/html/info-gnu/2017-02/msg00002.html Newlib 2.5 (newlib-2_5_0 tag) https://sourceware.org/ml/newlib/2016/msg01191.html GNU Binutils 2.28 (binutils-2_28-branch) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob_plain;f=bin… FSF GDB 8.0 (gdb-8.0-branch) https://sourceware.org/ml/gdb-announce/2017/msg00001.html Linaro toolchain package git branches are hosted at: http://git.linaro.org/toolchain NEWS for GCC 7 (as of Linaro GCC 7.1-2017.05-rc1) ================================================== * Performance related backports from the following snapshots have been included: Linaro GCC 7.1-2017.05. See the following Linaro GCC snapshots: http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.1-2017.05/ 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

7 years, 11 months

1
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[ACTIVITY] 22-24 May 2017

by Christophe Lyon

Short week (Off Thursday/Friday) == Progress == * Infrastructure: - improvements in binutils Jenkins jobs, to track regressions rather than always report 'failed' * Benchmarking: - polishing scripts * GCC: * misc (conf-calls, meetings, emails, ....) == Next == * Benchmarking scripts * GCC: rebase old patches and re-benchmark

7 years, 11 months

1
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[ACTIVITY] Week 21

by Yvan Roux

* Two days off (4/10) == Progress == o Linaro GCC/Validation (5/10) * Deployed 6.3 and 5,4 2017.05 releases (source and binaries) * Updated components for 7.1 2017.05 release candidate * Finishing release notes before deployment o Misc (1/10) * Various meetings and discussions. == Plan == o Deploy 7.1-rc1 and prepare release o Upstream monitoring reporting o Back on compiler development

7 years, 11 months

1
0
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ACTIVITY 22 - 26 May 2016

by Prathamesh Kulkarni

== This Week == * TCWG-1005 (4/10) - Reworking the patch with suggested improvements * PR80806 (1/10) - Rejected patch, based on discussions with Martin and Jeff - Submitted patch to remove dead call to memset in value-prof.c * type promotion (2/10) - Discussions with Kugan - Trying out different test-cases and going through the patch/ML discussions * TCWG-1129 (1/10) - Understanding EH in gcc * Validation (1/10) - Cross compiling boost for ARM * Misc (1/10) - Meetings - Pinged patch for PR78736. == Next Week == - GCC: TCWG-1005, type promotion, TCWG-1129, bugs - Validation: Add Boost to tcwg-buildapp

7 years, 11 months

1
0
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[ACTIVITY] 22 - 26 May 2017

by Yao Qi

# Progress # * GDB 8.0 release. TCWG-1050, [1/10] Blocked by one MingW build issue. Should be the last one. * gdb and objdump disassembler unification. [3/10] Patches are approved. Rebase them, re-test them, and push them in. Clean up some leftovers. * GDB target description changes. [5/10] Finish the design in GDBserver. Finish the prototype of both GDB and GDBserver. Re-org them to some extent. * GDB crossbuild w/ docker. [1/0] Inspired by QEMU build, take a look docker and think about how to use docker to build/test GDB for different targets. # Plan # * Holiday, and back to office on 6th June. * Post RFC v2 on GDB target description changes. * Upstream the patches of clean up to gdb and objdump disassembler unification. -- Yao Qi

7 years, 11 months

1
0
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[ACTIVITY] 22 - 26 May 2017

by Diana Picus

== Progress == * Bank holiday on Thursday [2/10] * [ARM GlobalISel] Add support for struct / array args [TCWG-1033] [5/10] - The array stuff is ready to commit, but SVN was down this morning so I'll commit next week * [GlobalISel] Run precommit for Daniel's patch [TCWG-1142] [2/10] - Ran precommit both manually and in Jenkins - Had some trouble with Jenkins and with the patch (it was based on the wrong revision) - In the end it was still too slow, so I'll probably get another patch next week * Misc [1/10] - Meetings, mailing lists, buildbots == Plan == * [ARM GlobalISel] Add support for struct / array args [TCWG-1033] - Finally commit this thing! * Add "push" capability to helper scripts [TCWG-1141] - This will be useful for working with Jenkins

7 years, 11 months

1
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[ANNOUNCE] Linaro Binary Toolchain Release GCC 6.3-2017.05

by Yvan Roux

The Linaro Binary Toolchain ============================ The Linaro GCC 6.3-2017.05 Release 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 packages from: (sources) http://releases.linaro.org/components/toolchain/gcc-linaro/6.3-2017.05/ (binaries) http://releases.linaro.org/components/toolchain/binaries/6.3-2017.05/ 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/ A description of the arm and Aarch64 target triples can be found at: https://collaborate.linaro.org/display/TCWGPUB/ARM+and+AArch64+Target+Tripl… 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 6.3-2017.05 http://releases.linaro.org/components/toolchain/gcc-linaro/6.3-2017.05/ 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-local/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/toolchain NEWS for GCC 6 (as of Linaro GCC 6.3-2017.05) ============================================== * Previous versions of the Linaro GCC 6 toolchain, when -static -E/—dynamic-list are passed to the linker, might create executables with dynamic sections which aren’t supported by run-time. This was exhibited in Perf Tools build system and has been fixed upstream and backported into Linaro Binutils 2.27 branch. Linaro bugzilla #2926 : Perf tools compiled statically for AArch64 with Linaro release 6.1 and later ones was not statically linked. https://bugs.linaro.org/show_bug.cgi?id=2926 * The Linaro GCC 6.3-2017.03 snapshot fixed some ILP32 issues (TLS, exception handling, …) and these have been incorporated into this release. * Previous versions of the Linaro GCC 6 toolchain were incorrectly generating floating-point code for soft-float Linux targets (arm-linux-gnueabi, and armeb-linux-gnueabi). This escaped detection until recently because the soft-float targeted toolchains were configured to use general-purpose registers for passing floating-point values (which is what you would expect for soft-float toolchains) and the intra-routine floating-code was not noticed. The issue would only show up on targets that were run on hardware that truly didn't have floating-point hardware where the kernel did not trap and emulate floating-point routines. This has been solved in Linaro GCC 6.3-2017.02-rc2 by configuring the toolchain (using --with-float=soft) to generate code without any floating-point instructions at all (-mfloat-abi=soft). https://review.linaro.org/#/c/16968/2 This change should not break compatibility between existing binaries compiled with these toolchains since the float-point parameter passing ABI is still the same. * A bug/regression in the compiler has been identified whereby the target function that is invoked when calling a "weak" function directly is the "strong" override, whereas when calling the function via a pointer the "weak" implementation is used. This would be noticed as inconsistent function invocation when invoking directly vs. invoking via function pointer. This issue only affected 32-bit arm targets. This regression has been fixed upstream and backported into Linaro GCC 6.3-2017.02-rc2. GCC 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 Linaro bugzilla #2562: ARM GCC 5.2 call weak function instead of strong when called through pointer https://bugs.linaro.org/show_bug.cgi?id=2562 * MS Windows does not support symlinks and the MS Windows archive extractor does not properly deep copy the symlink target files/directories into the symlinked directory structure when unpacking the toolchain archive. This causes problems with missing dependencies when using the Linaro mingw toolchains, as identified in the following 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 This has been solved by copying files rather than using symlinks when the mingw targetted toolchain archives are created. https://review.linaro.org/#/c/16415/ * Users of Linaro's toolchain have encountered problems when building projects with Autotools (specifically libtool): https://bugs.linaro.org/show_bug.cgi?id=2764 The Linaro binary toolchain release contained files with a .la suffix as artifacts of the toolchain build process. These .la files are helper files for libtool, but unlike a gcc install tree, they are not position independent and contain full paths. Since these artifacts contain absolute paths they can actually mislead user invocation of libtool into not finding required libraries (because they reference the build tree, not the install location) and hence breaking Autotools builds. These *.la file artifacts have been removed from Linaro toolchain binaries because they are unnecessary for users. * The Linaro GCC 6.3-2017.01 snapshot added further enablement for ARMv8-M and these have been incorporated into this release. * Compiling and statically linking some SPEC2006int tests against tcmalloc have been failing due to a problem with glibc's memory allocator function overrides. This was fixed upstream: https://sourceware.org/bugzilla/show_bug.cgi?id=20432 Backported into Linaro glibc 2.23: 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 2665915cfc46aa6403bb2efd473c523d3167e0cb Author: Andre Vieira (lists) <Andre.SimoesDiasVieira(a)arm.com> Date: Thu Jun 16 12:23:51 2016 +0100 Re-enable malloc_lock for newlib-nano * Backported rawmemchr patch into Linaro newlib 2.4. commit e7b1ee2ea6aa3ee1da41976407410e6202a098c5 Author: Wilco Dijkstra <Wilco.Dijkstra(a)arm.com> Date: Thu May 12 16:16:58 2016 +0000 Add rawmemchr * Backported strlen fix when using Thumb-2 and -Os -marm into Linaro newlib 2.4. commit 5c02bcc086a96b174e1b9e1445a4a1770070107a Author: Thomas Preud'homme <thomas.preudhomme(a)arm.com> Date: Wed May 11 17:18:48 2016 -0400 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 5c9403eaf40951f8a4f55ed65f661b485ff44be7 Author: David Hoover <spm2(a)dangerous.li> Date: Thu Apr 21 07:12:24 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, Linaro GCC 6.3-2017.01, Linaro GCC 6.3-2017.02, Linaro GCC 6.3-2017.03 and Linaro GCC 6.3-2017.04. 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/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.02/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.03/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.04/ 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

7 years, 11 months

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[ANNOUNCE] Linaro Binary Toolchain Release GCC 5.4-2017.05

by Yvan Roux

The Linaro Binary Toolchain ============================ The Linaro GCC 5.4-2017.05 Release 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 packages from: (sources) http://releases.linaro.org/components/toolchain/gcc-linaro/5.4-2017.05/ (binaries) http://releases.linaro.org/components/toolchain/binaries/5.4-2017.05/ 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/ A description of the arm and Aarch64 target triples can be found at: https://collaborate.linaro.org/display/TCWGPUB/ARM+and+AArch64+Target+Tripl… 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 5.4-2017.05 http://releases.linaro.org/components/toolchain/gcc-linaro/5.4-2017.05/ Linaro glibc 2.21 (linaro/2.21) https://lists.gnu.org/archive/html/info-gnu/2015-02/msg00001.html Linaro newlib 2.1.0-2014.09 (linaro_newlib-branch) https://sourceware.org/ml/newlib/2013/msg01128.html Linaro binutils 2.25 (linaro_binutils-2_25-branch) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob_plain;f=bin… FSF 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/toolchain NEWS for GCC 5 (as of Linaro GCC 5.4-2017.05) ============================================== * Include GCC fix for Linaro bugzilla #2785: Internal compiler error using -mtune=cortex-a57.cortex-a53. https://bugs.linaro.org/show_bug.cgi?id=2785 * 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. * Include GCC fix for Linaro bugzilla #2562: ARM GCC 5.2 call weak function instead of strong when called through pointer https://bugs.linaro.org/show_bug.cgi?id=2562 * 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 * Backported glibc patch to simplify static malloc interposition [BZ #20432] to correct user identified issue. commit 058b5a41d56b9a8860dede14d97dd443792d064b Author: Florian Weimer 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 1.1G to 580M for aarch64-linux-gnu target with the gcc-5-branch. * Removed .la files from binary toolchain archive as these files break autotools builds. https://bugs.linaro.org/show_bug.cgi?id=2764 * 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 * 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, Linaro GCC 5.4-2016.12, Linaro GCC 5.4-2017.02 and Linaro GCC 5.4-2017.04 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 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2017.02 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2017.04 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

7 years, 11 months

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[ACTIVITY] 15 - 19 May 2017

by Yao Qi

# Progress # * TCWG-178, confirm that longjmp.exp fails disappear on glibc with --enable-systemtap. [1/10] * GDB 8.0 release. TCWG-1050, [3/10] ** Fix a regression that command "tty" is missing. ** Review Thomas's patch handling non-FPU tests. Suggested to merge it to 8.0 branch. * Post my patches on gdb and objdump disassembler unification. [1/10] All binutils patches are approved. I'll push them in if no comments gdb side. * GDB target description changes. [4/10] People like my RFC, but Pedro requested the design and plan in GDBserver, because he has concern that my patch seres put GDB into an intermediate state. It will last a long time if we can't provide the design in GDBserver. * Upstream patches review. [1/10] Review 10~ patches about dwarf pieces. * Take care of Linux kernel awareness upstreams. Sync with Omair, and ask to ping to IBM to update their patches. # Plan # * Continue the GDB target description change discussions. * Push my approved patches. -- Yao Qi

7 years, 11 months

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[ACTIVITY] Week 20

by Yvan Roux

== Progress == o Linaro GCC/Validation (7/10) * Completed and deployed release automation job * Completed and deployed GCC 5, 6 and 7 2017.05 source snapshots * Completed stable release binaries (5.4 and 6.3 2017.05), ready for publication. * Preparing 7.1 2017.05 release candidate o Misc (3/10) * Various meetings and discussions. == Plan == o Finish 7.1 rc o Upstream monitoring reporting o Off Thursday and Friday

7 years, 11 months

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[ACTIVITY] 15 - 19 May 2017

by Diana Picus

== Progress == * [ARM GlobalISel] TableGen ISel for ADD/SUB [TCWG-1119] [1/10] - Committed upstream * [GlobalISel] AArch64 test-suite and self-host [TCWG-1074] [3/10] - Found that we can't self-host anymore with GlobalISel, we get a segfault in one of the tests - After investigations it turned out to be because we run out of stack space - Discussed upstream and did a couple more experimental runs with various other patches / flags * [ARM GlobalISel] Add support for struct / array args [TCWG-1033] [3/10] - Work in progress on supporting arrays * Misc [3/10] - Meetings, mailing lists, buildbots - Investigated some timeouts that have started showing up in some of our buildbots; will probably have to wrap up next week == Plan == * [ARM GlobalISel] Add support for struct / array args [TCWG-1033] * [GlobalISel] AArch64 test-suite and self-host [TCWG-1074]

7 years, 12 months

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[ACTIVITY] 15-19 May 2017

by Christophe Lyon

== Progress == * Infrastructure: - cleanup patches * Benchmarking: - runs on TK1 now OK too - polishing scripts * GCC: - preparing improvements for trunk validation (dejagnu upgrade, ...) * misc (conf-calls, meetings, emails, ....) == Next == * short week (Off Thursday/Friday)

7 years, 12 months

1
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[ACTIVITY] 15 - 19 May 2017

by Prathamesh Kulkarni

== This Week == * TCWG-1005 (6/10) - Reworked patch based on upstream feedback - Working through ICE's caused with the changes. * PR80806 (2/10) - Submitted patch upstream * type promotion (1/10) - Going thru Kugan's patch and mailing list discussions. * Misc (1/10) - Meetings == Next Week == - TCWG-1005, gcc bugs

7 years, 12 months

1
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[ANNOUNCE] Linaro GCC 5, 6 and 7 2017.05 source snapshots

by Yvan Roux

The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2017.05 snapshot of Linaro GCC 5, 6 and 7 source packages. o The GCC 7 series introduced an ABI change for ARM targets by fixing a bug (present since GCC 5, see link below) that affects conformance to the procedure call standard (AAPCS). The bug affects some C++ code where class objects are passed by value to functions and could result in incorrect or inconsistent code being generated. If the option -Wpsabi is enabled (on by default) the compiler will emit a diagnostic note for code that might be affected by this ABI change. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77728 For an explanation of the changes please see the following website: https://gcc.gnu.org/gcc-7/changes.html o Linaro GCC 7 monthly snapshot[1] is based on FSF GCC 7.1+svn247824 and includes performance improvements and bug fixes backported from mainline GCC. The contents of this snapshot will be used for the first stable[2] quarterly release in the GCC 7 series. This snapshot tarball is available on: http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.1-2017.05/ Interesting changes in this GCC source package snapshot include: * Updates to GCC 7.1+svn247824 * Backport of [AArch32] Allow combination of aprofile and rmprofile multilibs * Backport of [AArch32] Define TM_MULTILIB_CONFIG for ARM multilib * Backport of [AArch32] Rename FPSCR builtins to correct names * Backport of [AArch32] Set mode for success result of atomic compare and swap * Backport of [AArch64] Enable AUTOPREFETCHER_WEAK with -mcpu=generic * Backport of [AArch64] Improve address cost for -mcpu=generic * Backport of [AArch64] Update alignment for -mcpu=generic * Backport of [Testsuite] Require c99_runtime for pr78622.c o Linaro GCC 6 monthly snapshot[1] is based on FSF GCC 6.3+svn247789 and includes performance improvements and bug fixes backported from mainline GCC. This snapshot contents will be part of the 2017.08 stable[2] quarterly release. This snapshot tarball is available on: http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.05/ Interesting changes in this GCC source package snapshot include: * Updates to GCC 6.3+svn247789 * Backport of [Bugfix] [AArch32] PR target/71607: Fix ICE when loading constant * Backport of [AArch32] Add support for -mpure-code option * Backport of [AArch32] Enable Purecode for ARMv8-M Baseline * Backport of [AArch32] Fix arm-netbsdelf bootstrap * Backport of [AArch32] Fix pure-code test * Backport of [AArch32] Fix testism with pure-code tests for non Cortex-M targets * Backport of [AArch32] Fix type for .init_array.* and .fini_array.* sections * Backport of [AArch64] Fix type for 1-element load * Backport of [AArch64] Model Cortex-A53 load forwarding o Linaro GCC 5 monthly snapshot[1] is based on FSF GCC 5.4+svn247822 and includes performance improvements and bug fixes backported from mainline GCC. This snapshot contents will be part of the next maintenance release. This snapshot tarball is available on: http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2017.05/ Interesting changes in this GCC source package snapshot include: * Updates to GCC 5.4+svn247822 o 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@

7 years, 12 months

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[ACTIVITY] 8 - 12 May 2017

by Peter Smith

Achievements: Spent all week on investigating a potential problem with the Gold --fix-cortex-a53-843419 erratum fix (The ADRP on 0xff8/0xffc boundary) - Managed to reproduce with a smaller example, although still using LTO - Diagnosed the cause of object with errata stubs being relocated after the stub table has been relocated -- Most likely to hit LTO as the object from the LTO plugin will always be last in the task queue, but the stub table is relocated when the object that "owns" it is relocated, this is often not the LTO object. -- In theory it should be reproducible without LTO and a linker script -- Workaround for LTO is to create an Output Section just for LTO (The stub table is always owned by the LTO object) Plans for next week: - See if I can reproduce Gold errata problem without LTO - Report Gold errata problem upstream - Get back to LLD range thunk work - Investigate SBREL32 relocation support in LLD, upstream PR32924 - Look at fixing missing Thumb2 modified immediate fixup PR28647

8 years

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[ACTIVITY] Weeks 19

by Yvan Roux

* Day off (2/10) == Progress == o Linaro GCC/Validation (5/10) * GCC 5, 6 and 7 2017.05 source snapshots: - Completed backports - Troubleshot GCC 5 and 5 branch merges regressions * Re-working release automation job o Misc (3/10) * Various meetings and discussions. == Plan == o Complete monthly snapshots and releases o Continue release automation

8 years

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[ACTIVITY] 8 - 12 May 2017

by Prathamesh Kulkarni

== This Week == * PR77644 (2/10) - Committed to trunk * PR78736 (1/10) - Upstream reviews * PR80613 (1/10) - Committed to trunk * TCWG-1005 (1/10) - Looking how to handle indirect calls * Sick leave (4/10) - Eye infection * Misc (1/10) - Meetings == Next Week == - TCWG-1005, TCWG-1129, gcc bugs

8 years

1
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[ACTIVITY] 8-12 May 2017

by Christophe Lyon

Short week (1 day off) == Progress == * Infrastructure: - patch reviews - worked around regression-detection failures caused by some tests in tcwg-regression - added job to check our gcc-7 toolchain when a component is updated * Benchmarking: - troubleshooting systems configs - at last, first run on aarch64 triggered via jenkins * Snaphots - backports & reviews * GCC: - reported a few regressions upstream * misc (conf-calls, meetings, emails, ....) == Next == * benchmarking

8 years

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[ACTIVITY] 8 - 12 May 2017

by Diana Picus

== Progress == * Remove environment variables [TCWG-1114] [1/10] - Committed * [ARM GlobalISel] TableGen ISel for ADD/SUB [TCWG-1119] [5/10] - Committed a change to the legalizer so that we widen narrow operations (since we only have patterns for the 32-bit versions) - Committed support for G_ANYEXT, which is introduced by the legalizer while widening things and which we need to handle in the rest of the pipeline - Have a patch in upstream review fixing a TableGen bug * [GlobalISel] AArch64 test-suite and self-host [TCWG-1074] [2/10] - Ran the test-suite and self-host on AArch64 for GlobalISel -O0 - Committed a tiny fix for a test-suite application that was failing because GlobalISel doesn't lower fabs to hardware operations, so we had to link with -lm * Misc [2/10] - Buildbots (reverted stuff), meetings, mailing lists - Helped organize another LLVM social in Stockholm; we got really good feedback so far == Plan == * [ARM GlobalISel] Add support for struct / array args [TCWG-1033] * Other GlobalISel stuff * Probably wrap up TCWG-1074, we're really close to making the switch

8 years

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[ACTIVITY] 08 - 12 May

by Yao Qi

# Progress # * GDB 8.0 release. TCWG-1050, [1/10] Nothing new. Make sure Linaro GCC 7 release can pick up GDB 8. * SVE GDB. TCWG-1040, [6/10] ** Finish sve gdb target description doc, and send it to Alan. The work needed in GDB side becomes more and more clear, however, it is still unclear in GDBserver side. ** Post my patches about unit test to value/register conversion gdbarch hooks. ** Post my RFCs to make GDB target descriptions more flexible. * Misc, [3/10] ** Learn C++ template. ** Some patches review upstream. # Plan # * Upstream my GDB disassembler patch, which unify the disassembler selection in both gdb and objdump. * Back to the work on handling function pointer assignment in thumb mode. TCWG-333. -- Yao Qi

8 years

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[ACTIVITY] Weeks 18

by Yvan Roux

* Day off (2/10) == Progress == o Linaro GCC/Validation (5/10) * Release Automation: - 6.3 2017.05 RC1: Done - Preparing Linaro GCC 7 snapshot and RC * Backport for 2017.05 source snapshots * Reviews... o Misc (3/10) * Various meetings and discussions. == Plan == o Make 2017.05 snapshots (6 and 7) o Continue release automation

8 years

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[ACTIVITY] 1 - 5 May 2017

by Peter Smith

Progress: - Re-implemented range thunks based on recent upstream changes and sent for review. No comments as yet. This is likely to be an ongoing conversation with upstream that won't take all my time up so I've been looking at some additional stuff outside of range thunks. - Looked at PR28647 in llvm-mc, preventing openssl from being compiled with clang. Investigated to the point where I know what we should do next to fix. Next steps will be implementation. - Looked into a problem reported internally in ARM in gold's erratum --fix-cortex-a53-843419 on a large program using LTO. The patch is not being applied correctly leading to segfaults at run-time. This is likely to take some time to pin down as simple attempts to reproduce have failed. There is an upstream PR reporting a similar set of symptoms that looks like it could be the same thing but there is no useful information or investigation in it: https://sourceware.org/bugzilla/show_bug.cgi?id=21062 - Looked into lld PR32924, someone asking for RWPI support in lld, someone at least is keen to get embedded systems support into lld. Plans: - Continue looking into above PRs

8 years

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[ACTIVITY] 1 - 5 May 2017

by Diana Picus

== Progress == * Monday off [2/10] * [ARM GlobalISel] Use TableGen for inst selector [TCWG-1037] [1/10] - Committed upstream * Remove environment variables [TCWG-1114] [1/10] - Almost ready to send another patch for review * Lund Linux Conference [6/10] == Plan == * [ARM GlobalISel] Add support for struct / array args [TCWG-1033] * Other GlobalISel stuff

8 years

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[ACTIVITY] 1-5 May

by Yao Qi

* Monday off. [2/10] # Progress # *GDB 8.0 release, TCWG-1050. [2/10] ** Intel btrace python api patches are pushed in, and all intel specific stuff are removed from the python apis before release, Phew! ** GDBserver arm-linux software single step. More issues are found, can't catch 8.0 release. ** 8.0 release candidate is created. * SVE, TCWG-1040, [5/10] ** All my regcache class-fy patches are committed. Unblock some Alan's patches. ** One patch review. ** Post preparatory patches for my value/register conversion unit test patches. ** Think about how to change GDB target descriptions for SVE, and write them down. Turns out these problems are not specific to SVE, they are already there but SVE make them worse that we should fix. Ongoing. * Upstream review, [1/10] ** Review one kernel-awareness patch. ** Review OpenRISC GDB patches. # Plan # * Finish the doc about GDB target description changes for SVE, and send it to Alan. * Upstream my patches about unit test to value/register conversion gdbarch hooks. * Upstream my GDB disassembler patch, which unify the disassembler selection in both gdb and objdump. -- Yao Qi

8 years

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[ACTIVITY] 1-5 May 2017

by Christophe Lyon

Short week (1 day off) == Progress == * Infrastructure: - patch reviews * Benchmarking: - troubleshooting systems configs * GCC: - reported a few regressions upstream * misc (conf-calls, meetings, emails, ....) == Next == * benchmarking * Monday off

8 years

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[ACTIVITY] 1 - 5 May 2017

by Prathamesh Kulkarni

== This Week == * TCWG-1005 (4/10) - Made some improvements to analysis, which increased candidates for malloc functions in gcc source. - Patch review from Kugan * PR78736 (2/10) - Submitted upstream for review * PR80613 (2/10) - Submitted patch but was rejected by Richard - "Fixed" the bug by partially reverting the commit that caused it. * Validation (1/10) - Committed patch to tcwg-buildapp for adding python source. * Misc (1/10) - Meetings == Next Week == - TCWG-1005, GCC bugs, validation

8 years

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[ANNOUNCE] Linaro Binary Toolchain Release-Candidate GCC 6.3-2017.05-rc1

by Yvan Roux

The Linaro Binary Toolchain ============================ The Linaro GCC 6.3-2017.05-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: (sources) http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.05-rc1/ (binaries) http://snapshots.linaro.org/components/toolchain/binaries/6.3-2017.05-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/ A description of the arm and Aarch64 target triples can be found at: https://collaborate.linaro.org/display/TCWGPUB/ARM+and+AArch64+Target+Tripl… 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 6.3-2017.05-rc1 http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.05-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-local/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/toolchain NEWS for GCC 6 (as of Linaro GCC 6.3-2017.05-rc1) ================================================== * Previous versions of the Linaro GCC 6 toolchain, when -static -E/—dynamic-list are passed to the linker, might create executables with dynamic sections which aren’t supported by run-time. This was exhibited in Perf Tools build system and has been fixed upstream and backported into Linaro Binutils 2.27 branch. Linaro bugzilla #2926 : Perf tools compiled statically for AArch64 with Linaro release 6.1 and later ones was not statically linked. https://bugs.linaro.org/show_bug.cgi?id=2926 * The Linaro GCC 6.3-2017.03 snapshot fixed some ILP32 issues (TLS, exception handling, …) and these have been incorporated into this release. * Previous versions of the Linaro GCC 6 toolchain were incorrectly generating floating-point code for soft-float Linux targets (arm-linux-gnueabi, and armeb-linux-gnueabi). This escaped detection until recently because the soft-float targeted toolchains were configured to use general-purpose registers for passing floating-point values (which is what you would expect for soft-float toolchains) and the intra-routine floating-code was not noticed. The issue would only show up on targets that were run on hardware that truly didn't have floating-point hardware where the kernel did not trap and emulate floating-point routines. This has been solved in Linaro GCC 6.3-2017.02-rc2 by configuring the toolchain (using --with-float=soft) to generate code without any floating-point instructions at all (-mfloat-abi=soft). https://review.linaro.org/#/c/16968/2 This change should not break compatibility between existing binaries compiled with these toolchains since the float-point parameter passing ABI is still the same. * A bug/regression in the compiler has been identified whereby the target function that is invoked when calling a "weak" function directly is the "strong" override, whereas when calling the function via a pointer the "weak" implementation is used. This would be noticed as inconsistent function invocation when invoking directly vs. invoking via function pointer. This issue only affected 32-bit arm targets. This regression has been fixed upstream and backported into Linaro GCC 6.3-2017.02-rc2. GCC 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 Linaro bugzilla #2562: ARM GCC 5.2 call weak function instead of strong when called through pointer https://bugs.linaro.org/show_bug.cgi?id=2562 * MS Windows does not support symlinks and the MS Windows archive extractor does not properly deep copy the symlink target files/directories into the symlinked directory structure when unpacking the toolchain archive. This causes problems with missing dependencies when using the Linaro mingw toolchains, as identified in the following 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 This has been solved by copying files rather than using symlinks when the mingw targetted toolchain archives are created. https://review.linaro.org/#/c/16415/ * Users of Linaro's toolchain have encountered problems when building projects with Autotools (specifically libtool): https://bugs.linaro.org/show_bug.cgi?id=2764 The Linaro binary toolchain release contained files with a .la suffix as artifacts of the toolchain build process. These .la files are helper files for libtool, but unlike a gcc install tree, they are not position independent and contain full paths. Since these artifacts contain absolute paths they can actually mislead user invocation of libtool into not finding required libraries (because they reference the build tree, not the install location) and hence breaking Autotools builds. These *.la file artifacts have been removed from Linaro toolchain binaries because they are unnecessary for users. * The Linaro GCC 6.3-2017.01 snapshot added further enablement for ARMv8-M and these have been incorporated into this release. * Compiling and statically linking some SPEC2006int tests against tcmalloc have been failing due to a problem with glibc's memory allocator function overrides. This was fixed upstream: https://sourceware.org/bugzilla/show_bug.cgi?id=20432 Backported into Linaro glibc 2.23: 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 2665915cfc46aa6403bb2efd473c523d3167e0cb Author: Andre Vieira (lists) <Andre.SimoesDiasVieira(a)arm.com> Date: Thu Jun 16 12:23:51 2016 +0100 Re-enable malloc_lock for newlib-nano * Backported rawmemchr patch into Linaro newlib 2.4. commit e7b1ee2ea6aa3ee1da41976407410e6202a098c5 Author: Wilco Dijkstra <Wilco.Dijkstra(a)arm.com> Date: Thu May 12 16:16:58 2016 +0000 Add rawmemchr * Backported strlen fix when using Thumb-2 and -Os -marm into Linaro newlib 2.4. commit 5c02bcc086a96b174e1b9e1445a4a1770070107a Author: Thomas Preud'homme <thomas.preudhomme(a)arm.com> Date: Wed May 11 17:18:48 2016 -0400 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 5c9403eaf40951f8a4f55ed65f661b485ff44be7 Author: David Hoover <spm2(a)dangerous.li> Date: Thu Apr 21 07:12:24 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, Linaro GCC 6.3-2017.01, Linaro GCC 6.3-2017.02, Linaro GCC 6.3-2017.03 and Linaro GCC 6.3-2017.04. 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/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.02/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.03/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.04/ 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

8 years

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[ACTIVITY] 24 - 28 April

by Yao Qi

# Progress # * TCWG-1050, GDB 8.0 release. [4/10] ** Fix the new fails about the size of wchar_t on aarch64, by setting it to 4 in default. Patch is pushed to master and 8.0 branch. ** Intel btrace python api patches are ready to commit. No idea why he doesn't push yet. * TCWG-1040, Review SVE patches. [4/10] ** Review some SVE GDB patches, and approved part of them. Leave the controversial part there. Some of them are blocked by my Class-fy regcache patches. ** Class-fy regcache. Patches are approved. Will push them in later. Then, I'll update my unit test to value/register conversion gdbarch hooks, and post them next week. ** GDB target description change, the preparation for adding more hardware features, like PAUTH and SVE, and their arbitrary combinations. GDB side changes are done, and take i386-linux as an example to demonstrate the the benefit of the changes. * Misc, [2/10] ** Rebase my GDB disassembler patch, which unify the disassembler selection in both gdb and objdump. ** Explain the GDB behavior to Linaro kernel guy who is working on single-step in kgdb. ** Read some paper on dynamic slicing, and think about how to do it on GDB for aarch64/arm. # Plan # * Holiday on Monday. * Review kernel-awareness patches, * Upstream my patches about unit test to value/register conversion gdbarch hooks. * Post my GDB target description change as an RFC, collect comments, and think about the changes in GDBserver side (which is harder). -- Yao Qi

8 years

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[ACTIVITY] Weeks 17

by Yvan Roux

* Day off (2/10) == Progress == o Linaro GCC/Validation (5/10) * Release Automation: - 5.4 2017.05 RC1: Done - 6.3 2017.05 RC1: still on-going - Re-worked publication part of the process * Debug Binutils instablities * Reviews, backport, ... o Misc (3/10) * Various meetings and discussions. == Plan == o Complete 6.3 RC1 o Make Linaro GCC 7 RC o Continue release automation

8 years

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[ACTIVITY] 24 - 28 April 2017

by Diana Picus

== Progress == * [ARM GlobalISel] Support div [TCWG-1103] [1/10] - Committed upstream * [ARM GlobalISel] Fix fallback path [TCWG-1110] [2/10] - Fixed and committed another issue * [ARM GlobalISel] Fix loading i<32 from the stack [TCWG-1065] [2/10] - Committed upstream * Remove environment variables [TCWG-1114] [1/10] - Committed a first patch towards fixing this * Misc [4/10] - Meetings, mailing lists, code reviews - Minor GlobalISel cleanups - Put up a cron job on llvm-tk1-test-02 to track GlobalSel TableGen'erated code for ARM and AArch64 == Plan == * Out of office on Monday * [ARM GlobalISel] Use TableGen for inst selector [TCWG-1037] * [ARM GlobalISel] Add support for struct / array args [TCWG-1033] * Maybe finish TCWG-1114

8 years

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[ANNOUNCE] Linaro Binary Toolchain Release-Candidate GCC 5.4-2017.05-rc1

by Yvan Roux

The Linaro Binary Toolchain ============================ The Linaro GCC 5.4-2017.05-rc1 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: (sources) http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2017.05-rc1/ (binaries) http://snapshots.linaro.org/components/toolchain/binaries/5.4-2017.05-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/ A description of the arm and Aarch64 target triples can be found at: https://collaborate.linaro.org/display/TCWGPUB/ARM+and+AArch64+Target+Tripl… 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 5.4-2017.05-rc1 http://releases.linaro.org/components/toolchain/gcc-linaro/5.4-2017.05-rc1/ Linaro glibc 2.21 (linaro/2.21) https://lists.gnu.org/archive/html/info-gnu/2015-02/msg00001.html Linaro newlib 2.1.0-2014.09 (linaro_newlib-branch) https://sourceware.org/ml/newlib/2013/msg01128.html Linaro binutils 2.25 (linaro_binutils-2_25-branch) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob_plain;f=bin… FSF 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/toolchain NEWS for GCC 5 (as of Linaro GCC 5.4-2017.05-rc1) ================================================== * Include GCC fix for Linaro bugzilla #2785: Internal compiler error using -mtune=cortex-a57.cortex-a53. https://bugs.linaro.org/show_bug.cgi?id=2785 * 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. * Include GCC fix for Linaro bugzilla #2562: ARM GCC 5.2 call weak function instead of strong when called through pointer https://bugs.linaro.org/show_bug.cgi?id=2562 * 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 * Backported glibc patch to simplify static malloc interposition [BZ #20432] to correct user identified issue. commit 058b5a41d56b9a8860dede14d97dd443792d064b Author: Florian Weimer 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 1.1G to 580M for aarch64-linux-gnu target with the gcc-5-branch. * Removed .la files from binary toolchain archive as these files break autotools builds. https://bugs.linaro.org/show_bug.cgi?id=2764 * 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 * 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, Linaro GCC 5.4-2016.12, Linaro GCC 5.4-2017.02 and Linaro GCC 5.4-2017.04 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 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2017.02 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2017.04 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

8 years

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[ACTIVITY] 24-28 April 2017

by Christophe Lyon

Short week (3 days off) == Progress == * Infrastructure: - patch reviews * Benchmarking: - troubleshooting systems configs * misc (conf-calls, meetings, emails, ....) == Next == * short week: Off Monday * benchmarking

8 years

1
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[ACTIVITY] 17 - 21 April

by Yao Qi

* Two days off, Mon and Tue [4/10] # Progress # * TCWG-1050, GDB 8.0 release. [2/10] 8.0 branch is created. Intel btrace python api patches are almost OK push to master and 8.0 branch. Patches should be pushed in soon. * TCWG-1040, Review SVE patches. [3/10] Write unit test to value/register conversion gdbarch hooks. C++-fy regcache so that I can easily verify the result in unit test. Still some fails, need to investigate further. They are needed to prove SVE changes are correct. * Upstream patches review [1/10] ** arm software single step patch review. There is still an open issue that the author didn't realize, that is, GDB has to understand there may be different kind of breakpoints on the same address. * Propose deprecate arm fpa support in GDB. I need to post the proposal in gdb-announce(a)sourceware.org this week, according to the deprecation process. # Plan # * Finish my unit test and post them for review (with regcache C++-fy patch). * Other issues on 8.0 release if any. -- Yao Qi

8 years

1
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[ACTIVITY] Weeks 16

by Yvan Roux

* Public Holiday (2/10) == Progress == o Linaro GCC/Validation (5/10) * Release Automation: - Deployed job to create snapshots/releases tags - Working on the missing jobs to complete automation process * GCC 7 preview release: - Mingw builds fixed after revert - Merged upstream GCC 7 and built binaries - Preapring Linaro GCC 7 branch o Misc (3/10) * Various meetings and discussions. == Plan == o Finalized 2017.05 RCs o Continue release automation

8 years

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[ACTIVITY] 17 - 21 April 2017

by Diana Picus

== Progress == * Out of office on Monday [2/10] * [ARM GlobalISel] Investigate divmod [TCWG-1086] - Broke this up into several smaller stories * [ARM GlobalISel] Support sub and mul [TCWG-1104] [1/10] - Committed upstream * [ARM GlobalISel] Support trunc [TCWG-1109] [1/10] - Committed upstream * [ARM GlobalISel] Support div [TCWG-1103] [2/10] - Mostly done, will upstream next week * [ARM GlobalISel] Fix fallback path [TCWG-1110] [2/10] - Oliver from ARM has started running csmith with GlobalISel and is finding several issues - Fixed one of them and committed upstream - Will commit another one next week * Misc [2/10] - Meetings, mailing lists, code reviews, buildbots - Minor cleanup in the ARM backend (renamed a subtarget feature to avoid future misuse) == Plan == * [ARM GlobalISel] Fix fallback path [TCWG-1110] * [ARM GlobalISel] Support div [TCWG-1103] * Resume [ARM GlobalISel] Use TableGen for inst selector [TCWG-1037]

8 years

1
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[ACTIVITY] 19 - 21 April 2017

by Peter Smith

3 day week,Monday and Tuesday off Achievements: [TCWG-614] Range Thunks - No review progress, blocked on a request for some refactoring to unify the address allocation. - Reworked my downstream patch stack in light of TCWG-1088 below. - Spent some time refactoring the code to try and make it easier to follow. [TCWG-1088] Refactoring of address assignment - Committed first patch reviewed last week - Sent out first couple of patches, no response from upstream, I'm hoping this is due to maintainers being on Easter holiday. Some upstream review on ILP32 patches. Plans for next week: - 2 day week, at ACCU2017 conference Wednesday to Friday. - Respond to any upstream review comments. - Find some small tasks to do to fit in the remainder of the time. Planned Absences - ACCU2017 next week (Wednesday to Friday)

8 years

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[ACTIVITY] 17 - 21 April 2017

by Prathamesh Kulkarni

== This Week == * PR79697 (2/10) - Updated patch on top of trunk, passes validation. * PR79715 (2/10) - Updated patch according to upstream feedback, passes native bootstrap * TCWG-1010 (4/10) - Playing with LLVM's bit-tracking DCE pass - WIP prototype * TCWG-1111 (1/10) - WIP patch * Misc (1/10) - Meetings == Next Week == - Submit and address upstream reviews for PR79697 and PR79715 - Submit malloc attr propagation for upstream review - TCWG-1111 - Try to resolve review 18103 (overriding cc/cxx)

8 years

1
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[ACTIVITY] 17-21 April, 2017

by Christophe Lyon

Monday off == Progress == * Infrastructure: - (lots of) patch reviews * Validation: - added tests to tcwg-regression - kernel-ci followup - binutils jenkins job: removed obsolete configs * Benchmarking: - updated patches, troubleshooting systems configs * GCC - finally succeeded to bootstrap gcc-5 on armv7 / backported fix for pr68390 - created setup for gcc-7-branch regression testing (in ST) * misc (conf-calls, meetings, emails, ....) == Next == * short week: Off Wed/Thu/Fri * benchmarking

8 years

1
0
0 0

Error: unknown pseudo-op: `.arch_extension'

by Jeffrey Walton

I'm working on my HiKey. I'm trying to enable CRC extension on ARMv8 in the assembler regardless of the way GCC was built, and regardless of the user's CFLAGS and CXXFLAGS. I'm encountering an assembler error: "unknown pseudo-op: `.arch_extension'". According to [1], I can use ".arch_extension" to enable it. According to [2], ".arch_extension" is available in GCC 4.6 and GAS 2.21. My version of Linaro provides GCC 4.9.2 and GAS 2.25.90. I can also duplicate the issue on GCC113 (compiel farm), which provides GCC 4.8 and GAS 2.24. The test program is below. Trying to compile it results in: $ g++ test.cxx -c /tmp/ccVZ6hiq.s: Assembler messages: /tmp/ccVZ6hiq.s:24: Error: unknown pseudo-op: `.arch_extension' /tmp/ccVZ6hiq.s:25: Error: selected processor does not support `crc32b w1,w0,w0' Trying to compile without ".arch_extension" results in: $ g++ test.cxx -c /tmp/cci4wu6d.s: Assembler messages: /tmp/cci4wu6d.s:24: Error: selected processor does not support `crc32b w1,w0,w0' Its almost as if ".arch_extension" is not being properly recognized or consumed. Any ideas what might be going wrong here? ********** The program: $ cat test.cxx #include <arm_neon.h> #define GCC_INLINE_ATTRIB __attribute__((__gnu_inline__, __always_inline__, __artificial__)) #if defined(__GNUC__) && !defined(__ARM_FEATURE_CRC32) __inline unsigned int GCC_INLINE_ATTRIB CRC32B(unsigned int crc, unsigned char v) { unsigned int r; asm (" \n" ".arch_extension crc \n" "\t" "crc32b %w2, %w1, %w0 \n" : "=r"(r) : "r"(crc), "r"((unsigned int)v)); return r; } #else // just use the instrinsic # define CRC32B(a,b) __crc32b(a,b) #endif int main(int argc, char* argv[]) { return CRC32B(argc, argc); } ********** Versions... $ gcc --version gcc (Ubuntu/Linaro 4.8.4-2ubuntu1~14.04.3) 4.8.4 $ as -v GNU assembler version 2.24 (aarch64-linux-gnu) using BFD version (GNU Binutils for Ubuntu) 2.24 $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 14.04.5 LTS Release: 14.04 Codename: trusty [1] https://sourceware.org/binutils/docs/as/AArch64-Directives.html#AArch64-Dir… [2] https://gcc.gnu.org/ml/gcc-help/2012-07/msg00180.html

8 years

2
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[ACTIVITY] Weeks 15

by Yvan Roux

* Child care (2/10) == Progress == o Linaro GCC/Validation (5/10) * Released GCC 5 and 6 Linaro source sanpshots * Progressing on release automation * Preparing GCC 7 preview release: - found a build issue for mingw toolchains - proposed a fix upstream, discussion on-going. o Misc (3/10) * Various meetings and discussions. == Plan == o Continue release on automation and prepare 2017.05 RC

8 years

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[ACTIVITY] 10-14 April 2017

by Christophe Lyon

== Progress == * Validation - kernelci/lava-ci scripts update broke my prototype. We need more discussion at this point. - benchmarking scripts, debugging with Jenkins - reviews * GCC - reported a regression on trunk after an LRA fix, now fixed by Vladimir. - bootstrapping gcc-5 on armv7 (using present continuous because it's taking so long) - Linaro bugzilla * misc (conf-calls, meetings, emails, ....) == Next == * Validation? * Benchmarking: debug scripts/jenkins/board setup * Off Monday 17th

8 years, 1 month

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[ACTIVITY] 10 - 14 April 2017

by Peter Smith

[TCWG-614] Range Thunks - No review progress, blocked on a request for some refactoring to unify the address allocation. [TCWG-1088] Refactoring of address assignment - Found out that linker scripts can break ARM exceptions in the same way as they can break the thunk insertion - Made a prototype of unified address allocation that is good enough for the current interworking range thunks. This passes the existing test case that I made to show that linker scripts could break the Mips LA25 thunk placement. [TCWG-1089] Fixed problem with ARM exceptions and identical code folding Plans for next week: On Holiday Tuesday [TCWG-1088] Polish up patches and send for review. Planned Absences: Tuesday 18th April Wednesday - Friday 27 - 29 April ACCU 2017

8 years, 1 month

1
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[ACTIVITY] 10th -- 14th April

by Yao Qi

# Progress # * TCWG-1050, GDB 8.0 release. [4/10] Release branch is not created, but a lot of C++ patches are posted, and massively change the code even when release is coming. ** Fix PR 19942, patch v2 is OK. Committed. ** Intel btrace python interface. Intel people posted patches to adjust the interface as I requested. Reviewing them. They look much better. * TCWG-1040, Review SVE patches. [4/10] SVE patches review. Read Alan's patches and various GDB backends, like mips, xtensa, and ia64. Feel nervous to approve them because we have no way testing them. Figure out a unit test to related methods, and it works well if I build GDB with ASAN. This unit test does find some existing issues, and patches are posted. In order to make the test more useful, need to C++-fy regcache, not a small piece of work. * Upstream reviews [2/10] ** Software single-step on arm-non-eabi. Convince the author that his patch will break GDB's default behavior, and give some thoughts on fixing it. ** Propose to deprecate ARM FPA in GDB. So far, I am not clear what is the "right" process to deprecate features in GDB. (I know how to deprecate ports and commands). ** Some one complains GDB can't unwind from arm64 kernel irq vector, which is hand written asm. The fix should be using .cfi directives to annotate them, however, they want GDB to error out if it can't unwind. I am suggested to ask in linux-arm-kernel(a)lists.infradead.org about the expected behavior. Will do next week. # Plan # * Mon and Tue off. * Figure out more ways to test code touched by SVE patches. Convert regcache to class if necessary. -- Yao Qi

8 years, 1 month

1
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