== Progress ==
* [ARM] Investigate switching from itineraries to schedule models
[TCWG-824] [4/10]
- Looked at the sched model as well as the old instruction itinerary
interfaces
- There aren't many tests that are specifically testing the scheduler,
but lots of tests break if you make enough changes to it (it's unclear
which of these are breaking intentionally and which are just poorly written)
- First step is probably to try and complete the sched model (TCWG-543),
then hunt down any differences between what we get using itineraries and
what we get with the new model
* Rewrite llvm-projs in Python [TCWG-833] [3/10]
- Reorganized the repo so we can have a separate tests directory
- Added support for parsing command line options
- Almost ready for review
* Misc [2/10]
- Catching up after vacation
- LLVM GitHub move survey
== Plan ==
* Wrap up TCWG-833
* Migrate scripts to Python 3 (TCWG-896)
* Maybe start TCWG-543 as the first step in TCWG-824
# Progress #
* TCWG-547, Change software_single_step interface to return a vector
of address. [3/10]
Patches are reviewed. V2 are posted and committed. Follow-up
patches are being tested.
* TCWG-333, Fix gdb.base/func-ptrs.exp fails in thumb mode. [3/10]
Clean up val_print, remove one redundant parameter. Patches are
being tested.
* Maintain upstream GDB, patches review, [2/10]
* OpenOCD. [2/10] Various IRC chats with maintainer about
** multi-thread support in RTOS, and multi-thread debugging,
** Release 0.10.0 and aarch64 patches merging,
** Understand aarch64 OpenOCD reads DSPSR (32-bit), so don't have to
update GDB target description now.
* Short chat with Peter Griffin on thread ids in linux-kthread.
# Plan #
TCWG-547, TCWG-333.
--
Yao Qi
# Progress #
* Fix GDBserver build on aarch64_be. [1/10]
Done. Patch is pushed in to master and 7.12 branch.
* TCWG-333, Fix gdb.base/func-ptrs.exp fails in thumb mode. [4/10]
Get anther patch and fix all regressions. In the discussion
with ppc64 and mips people on my approach.
* TCWG-518, Range stepping in arm-linux. Done. [1/10]
After pending for several months, patches are approved. Pushed
them in!
* Reproduce the GCC dwarf generation regression. [1/10]
Reported to GCC and Jakub fixed it.
* Sort out the license issue of new OCaml debugging support in gdb.
Help to clarify a little bit. [1/10]
* Discuss with OpenOCD people on supporting thread awareness for
RTOS. [1/10]
* Misc, meeting. [1/10]
# Plan #
* TCWG-333, TCWG-547
* Add new aarch64 target description for 64-bit xPSR.
--
Yao Qi
o 2 days off (4/10)
== Progress ==
o Linaro GCC/Validation (4/10)
* ABE and validation jobs reviews
* Investigating binary tarballs size reduction
o Misc (2/10)
* Various meetings and discussions.
== Plan ==
o Continue on validation
o Complete 4.9 branch merge
* TCWG-72 (2/10)
- Committed to trunk finally!
* ipa mod/ref analysis (6/10)
- Prototype in progress based on Muchnik's text
* Misc (2/10)
- Committed a trivial patch to use VAR_P in arm.c.
- Background reading on paper about virtual-ssa.
- Meetings
== Next Week ==
- Continue with mod/ref analysis
- TCWG-319
- Ping patch for GCC PR35503.
# Progress #
TCWG-845 Static linking missing linker defined symbols
- Now upstream
TCWG-829 Support for ifunc
- Patch sent upstream for review, no feedback yet. This is a bit messy
as ARM is different to other architectures so I expect this to need
reworking several times.
TCWG-828 Static linking and TLS
- Downstream patch implemented and tested, will send upstream after ifunc
TCWG-683 Support for branches to undefined weak references
- Downstream patch implemented and tested
Other:
- Downloaded and built Mozilla and Chromium so I can use them as
performance tests for lld (initially for x86_64).
- Wrote some scripts to make using lld in place of gnu ld a bit more convenient.
# Plan #
- Upstream static linking changes
- Work some infrastructure to test lld more widely on ARM.
o 2 days off (4/10)
== Progress ==
o Linaro GCC/Validation (4/10)
* Completed GCC 5 and 6 branch merges
* Released source 2016.10 snapshots
o Upstream GCC (1/10)
* Investigate PR #78020 (vzip, vuzp implementation).
o Misc (1/10)
* Various meetings and discussions.
== Plan ==
o Two more days off
o Back on 4.9 branch merge and validation.
The Linaro Binary Toolchain
============================
The Linaro GCC 6.2-2016.11-rc1 Release-Candidate is now available.
The GCC 6 Release series has significant changes from the GCC 5
release series. For an explanation of the changes please see the
following website:
https://gcc.gnu.org/gcc-6/changes.html
For help in porting to GCC 6 please see the following explanation:
https://gcc.gnu.org/gcc-6/porting_to.html
Download release-candidate packages from:
http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.2-2016.11-rc1/http://snapshots.linaro.org/components/toolchain/binaries/6.2-2016.11-rc1/
Previous snapshots and release-candidates are at:
http://snapshots.linaro.org/components/toolchain/binaries/
Previous releases are at:
http://releases.linaro.org/components/toolchain/binaries/
Host Requirements
==================
Linaro officially supports the current and previous Ubuntu LTS
releases (as of the time of this release). This does not mean that
the toolchain will not work on other/older Linux distributions. See
the following for the life-time of Ubuntu LTS releases.
https://wiki.ubuntu.com/Releases
The host system upon which the cross-compiler will run requires a
minimum of glibc 2.14, because of API changes to glibc's memcpy API.
https://bugs.linaro.org/show_bug.cgi?id=1869
Package Versions
=================
Linaro GCC 6.2-2016.11-rc1
Linaro glibc 2.23 (linaro/2.23/master)
https://www.sourceware.org/ml/libc-alpha/2016-08/msg00212.html
Linaro newlib 2.4-2016.03 (linaro_2.4-branch)
Linaro binutils 2.27 (linaro_binutils-2_27-branch)
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob_plain;f=bin…
Linaro GDB 7.12 (gdb-7.12-branch)
https://sourceware.org/ml/gdb/2016-08/msg00000.html
Linaro toolchain package git branches are hosted at:
http://git.linaro.org/?a=project_list&s=toolchain%2F&btnS=Search
NEWS for Linaro GCC 6.2-2016.11-rc1
====================================
* 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.
* Basic tuning support for the Qualcomm qdf24xx was added to the Linaro
GCC 6.2-2016.10 snapshot and will appear in this release.
* IFUNC was disabled for baremetal targets, as it was causing test-suite
failures, and is presently a Linux only feature.
* The gold linker was also added to this binary releases (for linux
targets).
* Backported malloc_lock fix into Linaro newlib 2.4.
commit 022bd2995640626d9efb6a839884c5e1c7c5e133
Author: Christophe Lyon <christophe.lyon(a)linaro.org>
Date: Wed Oct 19 14:11:50 2016 +0200
Re-enable malloc_lock for newlib-nano
* Backported rawmemchr patch into Linaro newlib 2.4.
commit 5357441171f2409fb759112bc6a00d3e672374d9
Author: Christophe Lyon <christophe.lyon(a)linaro.org>
Date: Wed Oct 19 14:09:51 2016 +0200
Add rawmemchr
* Backported strlen fix when using Thumb-2 and -Os -marm into Linaro
newlib 2.4.
commit f194ff4d5e1e304ac2a8d438d7abcbffd2dba757
Author: Christophe Lyon <christophe.lyon(a)linaro.org>
Date: Wed Oct 19 14:05:23 2016 +0200
Fix strlen using Thumb-2 with -Os -marm
* Backported fix for semihosting ARM when heapinfo not provided by
debugger into Linaro newlib 2.4.
commit bda499cb9d2b97075f74df9bfb38b23ff4d12ac2
Author: Christophe Lyon <christophe.lyon(a)linaro.org>
Date: Wed Oct 19 13:59:52 2016 +0200
Fixed semihosting for ARM when heapinfo not provided by debugger.
* Merged latest FSF glibc release/2.23/master into Linaro glibc 2.23.
* Added __ASSUME_REQUEUE_PI support to 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)
* Added __ASSUME_SET_ROBUST_LIST support to 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
* Added __ASSUME_FUTEX_LOCK_PI support to 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.
* Include 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.
* 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/
* Include 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 Linaro GCC 6.1-2016.06, Linaro GCC
6.1-2016.07, Linaro GCC 6.1-2016.08, Linaro GCC 6.2-2016.09, and
Linaro GCC 6.2-2016.10 have been included.
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/
Contact Linaro
===============
File bugs at http://bugs.linaro.org
For Linaro member support see http://support.linaro.org
--
Ryan S. Arnold | Linaro Toolchain Engineering Manager
ryan.arnold(a)linaro.org | ryanarn on #linaro-tcwg @ freenode.irc.net
== Progress ==
LTO/IPA
- Committed propagation of nonnull attribute and optimizations
- Committed patch to infer noonull from ADDR_EXPR
- Working on a patch to improve ipa-cp unary expressions pass
through jump-function
* LTO bootstrap is failing in streaming but normal bootstrap working
* Looking into it
== Next ==
- Commit pending patches
- Start LTO benchmarking and analysis
