linaro-toolchain

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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

9 years, 2 months

[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

9 years, 2 months

[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

9 years, 2 months

[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

9 years, 2 months

[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, ....)

9 years, 2 months

[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

9 years, 2 months

[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

9 years, 2 months

[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

9 years, 2 months

[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

9 years, 2 months

[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

9 years, 2 months

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