The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2014.08
stable release of both Linaro GCC 4.9 and Linaro GCC 4.8 source package.
With the imminent release of ARMv8 hardware and the recent release of the
GCC 4.9 compiler the Linaro TCWG will be focusing on stabilization and
performance of the compiler as the FSF GCC compiler. The Linaro TCWG provides
stable[1] quarterly releases and monthly engineering[2] releases.
Linaro GCC 4.9 2014.08 is the fifth Linaro GCC source package release and first
stable one in the 4.9 series. It is based on FSF GCC 4.9.2-pre+svn213803 and
includes performance improvements and bug fixes.
Interesting changes in this GCC source package release include:
* Updates to GCC 4.9.2-pre+svn213803
* Backport of [AArch64] Drop ISB after FPCR write.
* Backport of [AArch64] Remove from arm_neon.h functions not in the spec
* Backport of [AArch32] Fix check for __FAST_MATH in arm_neon.h
* Backport of [AArch64] fix and enable non-const shuffle for bigendian using TBL
instruction
* Backport of [AArch64] Fix constraint vec_unpack_trunk
* Backport of [AArch32] Cortex-A5 rtx costs table
* Backport of [AArch32] Handle clz, rbit types in arm pipeline descriptions
* Backport of [AArch64] Fix argument types for some high_lane* intrinsics
implemented in assembly
* Backport of [AArch64] Handle fcvta[su] and frint in RTX cost function
* Backport of [AArch64] Prologue rewrite + performance.
Linaro GCC 4.8 2014.08 is the fourteenth release in the 4.8 series and is in
maintenance. Based off the latest GCC 4.8.4+svn213802 release, it includes
performance improvements and bug fixes.
Interesting changes in this GCC source package release include:
* Updates to GCC 4.8.4+svn213802
* Backport of Fix [AArch32] for PR sanitizer/58543
* Backport of Fix [AArch64] for PR target/59744
Feedback and Support
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 Launchpad against "Linaro GCC project":
http://bugs.launchpad.net/gcc-linaro/+filebug.
* Questions? "ask Linaro":
http://ask.linaro.org/.
* Interested in commercial support? inquire at "Linaro support":mailto:
support(a)linaro.org
[1] Stable source package releases are defined as releases where the full Linaro
Toolchain validation plan is executed.
[2] Engineering source package releases are defined as releases where the
compiler is only put through unit-testing and full validation is not
performed.
= Progress ==
* Upstream work (4/10, CARD-341)
- Patch review (gdb, binutils)
- glibc testsuites for ARM and AArch64
* Booting upstream kernel on Chromebook (4/10)
- Tried u-boot path but Google's shipped NV u-boot is broken in several ways
- Fall back to trying to boot a signed upstream kernel
- Gets halfway through boot then seems to turn the regulators off
* Malloc application benchmarking (2/10, TCWG-441)
- Add pdf library benchmark to benchmark suite
- Improve argument parsing and result plotting
- Seem to be hitting some new issue with mounting memory cgroup within docker
== Issues ==
* None
== Plan ==
* Iron out issues with malloc benchmark framework
* Get Chromebook booting
--
Will Newton
Toolchain Working Group, Linaro
== Progress ==
* Benchmarks (CARD-716 2/10)
- Wrapping up SPEC run, some results
- Fix missing tests, running with -ffast-math
* Toolchain (CARD-862 4/10)
- A few more assembler fixes
- http://llvm.org/PR20462
- http://llvm.org/PR20595
- Some vectorizer cleanups
- http://llvm.org/PR20655
* Background (4/10)
- Code review, meetings, discussions, etc.
- Trying D01s again as buildbots
== Plan ==
* Pick some more toolchain bugs to work on
* Release 3.5 tests and benchmarks
* Move bots to CMake, enable compiler-rt
* Change compilation to make Clang/LLVM non-NEON by default
* Enable D01s as buildbots
== Issues ==
* None.
== Progress ==
* Update "Keep constants in register when expanding" patch according
to comments (TCWG-486, 3/10).
* Refine ccmp patches since the old ones can not apply (TCWG-488, 2/10).
* Check PR62151, it was exposed by my commit r211885. But the root
cause was r208165.
* R/M toolchain related work (5/10)
== Plans ==
* Ping pending patches.
== Planed leaves ==
* Aug. 18 - 26.
Hi,
I am trying to build a working environment with Angstrom Linux, QT5 for
Toradex Apalis iMX6 module and additional QT5 SDK for my host machine.
The compilation of Angstrom with additional QT5 layer went fine.
However, there are some problems when building toolchain for the host
machine (command meta-toolchain-qt5). It seems that there is a problem
with configuration of linaro gcc runtime 4.8.
The reported error is: "checking dynamic linker characteristics...
configure: error: Link tests are not allowed after GCC_NO_EXECUTABLES".
The log file is in the attachment. Does anyone have any idea how to fix
this problem? I am using Ubuntu 14.04.
Thanks in advance,
Crt Gorup
Hello,
I'm trying to perform cross platform remote debugging from my x86 computer
to a remote ARM device. (ex: Beagle Bone Black)
I'm using Ubuntu 14.04 and Eclipse CDT.
I installed the Ubuntu package gcc-arm-linux-gnueabihf but the gdb debugger
is not in that package.
Therefore, I'm wondering if I should use the Linaro toolchain (which
include arm-linux-gnueabihf-gdb) or if I should install the Ubuntu
gdb-multiarch package.
What is the difference between gdb-multiarch and arm-linux-gnueabihf-gdb ?
Is it better to use gdb-multiarch ?
Thanks
ssinfod
== Progress ==
BeagleBoard and Pandaboard setup for gdb testing [3/10]
* Deployed debian linux on both boards
* Installation of required packages for gdb testing
* Run gdb native tests on Beagleboard, Pandaboard and Chromebook
Arm gdb record-replay bug fix [6/10] [TCWG-314]
* Applied previous asimd and vfp patches and test for failures
* Fixed exception due to a bug in previous patches with latest trunk.
* Fixed issues with solib trampoline code when stepping in reverse.
Miscellaneous [1/10]
* In pursuit of deploying linux on boards dd,ed my hard drive by
accident and spent some time re-installing my desktop.
== Plan ==
Arm record-replay bug fix [TCWG-314]
* Test bug fixes with all previous patches and resubmit.
Update and Submit Aarch64 record replay patches.
Resume work on Aarch64 prologue analysis.
=Progress=
cbuild2 benchmarking- TCWG-360 [6/10]
* Existed patches tidied up and gerritified
* A few drive-by bugfixes
* Cross-building support added and also gerritified
lowlevellock patch [1/10]
* Resubmitted bugfix, reacted to review
* Some wrestling with space-mangling evil in mail clients
Meetings/mail/etc [3/10]
=Plan=
Holiday Tuesday afternoon
cbuild2 benchmarking
* Get remote targets working
* Maybe look at results gathering
== This week ==
* Linaro bugzilla 331 - [4.9 Regression] ICE in final_scan_insn, at
final.c:2952 [4/10]
- Triaged and investigating
* Linaro bugzilla 307 - [Linaro 4.8] ICE in change_address_1, at
emit-rtl.c:2019 [1/10]
- Unable to validate. Further investigation before closing
* TCWG-515 - Neon intrinsic bug testing [5/10]
- Linaro Infrastructure headaches and setup.
- May split into several blueprints targeting two to three tests
- Require assistance debugging DejaGnu script error preventing some
tests from running
== Next week ==
- Continue with Neon intrinsic testing
- Continue investigation into resolution for Linaro bugzilla 331
== Progress ==
* Fixed aarch64_be-none-elf builds and cross tests. (2/10)
* Forked ancient RSH support in DejaGnu to be more SSH aware. SSH
is now takes 1/4 of the time it used to for each remote execution test
case. (TCWG 512 - 4/10)
* Stabilized new ZSSH protocol in DejaGnu, also much faster than the
current RSH/SSH support. (TCWG 512 - 3/10)
* Meetings and Misc. (1/10)
== Plan ==
* Get my D01 board working finally, since I killed my Odroid U2.
* Review benchmarking patches.
* Do more thorough testing of SSH performance improvements.
