# 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
== 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
== 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]
== 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
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@
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
* 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
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
