The Linaro Toolchain Working Group is pleased to announce the 2012.11
release of the Linaro Toolchain Binaries, a pre-built version of
Linaro GCC and Linaro GDB that runs on generic Linux or Windows and
targets the glibc Linaro Evaluation Build.
Uses include:
* Cross compiling ARM applications from your laptop
* Remote debugging
* Build the Linux kernel for your board
What's included:
* Linaro GCC 4.7 2012.11
* Linaro GDB 7.5 2012.09
* A statically linked gdbserver
* A system root
* Manuals under share/doc/
The system root contains the basic header files and libraries to link
your programs against.
The Linux version is supported on Ubuntu 10.04.3 and 12.04, Debian
6.0.2, Fedora 16, openSUSE 12.1, Red Hat Enterprise Linux Workstation
5.7 and later, and should run on any Linux Standard Base 3.0
compatible distribution. Please see the README about running on
x86_64 hosts.
The Windows version is supported on Windows XP Pro SP3, Windows Vista
Business SP2, and Windows 7 Pro SP1.
The binaries and build scripts are available from:
https://launchpad.net/linaro-toolchain-binaries/trunk/2012.11
Need help? Ask a question on https://ask.linaro.org/
Already on Launchpad? Submit a bug at
https://bugs.launchpad.net/linaro-toolchain-binaries
On IRC? See us on #linaro on Freenode.
Other ways that you can contact us or get involved are listed at
https://wiki.linaro.org/GettingInvolved.
Summary:
* Investigate shrink-wrap result.
* Prepare for Linaro toolchain binary release, script merge and aarch64 test.
Details:
1. Investigate shrink-wrap result of function Ray_In_Bound. By
default, ARM/MIPS/PPC/X86 toolchain can not shrink-wrap the function.
For ARM, there is copy "r6 = r1" which blocks the optimization. By
hacking the assemble code, I got ~3% performance improvement for
453.povray benchmark.
2. Setup AARCH64 simulation environment by following
http://www.linaro.org/engineering/armv8.
3. Write scripts to collect branch cost performance. It will take
weeks to get all the benchmark results.
4. Smoke test Linaro toolchain binaries 2012.11 release.
5. Try export crosstool-ng trunk to a bzr project. bzr fast-import
always fail on Ubuntu 10.04, but it works on 12.04.
6. RM toolchain related work.
Plans:
* Collect performance data for branch cost tuning.
* Linaro binary toolchain 2012.11 release.
* Verify shrink-wrap bugs.
Best regards!
-Zhenqiang
== Progress ==
* Turn off 64-bits bitops in Neon: initial implementation under
benchmarking.
Currently it modifies the handling of: add, sub, and, or, xor, shifts,
not. In some case the generated code is quite larger, so it will careful
benchmarking.
* Started looking at "disable peeling" blue-print. Reading GCC source code
to get more familiar with that area.
* Internal support
== Blueprints ==
Initial Current Actual
initial-aarch64-backport 31 Oct 2012 30 Nov 2012
aarch64-baremetal-testing 31 Oct 2012 30 Nov 2012
fix-gcc-multiarch-testing 31 Dec 2012 31 Dec 2012
backport-fma-intrinsic 31 Dec 2012 31 Dec 2012
fused-multiply-add-support 31 Dec 2012 31 Dec 2012
gcc-investigate-lra-for-arm 31 Dec 2012 31 Dec 2012
== Progress ==
* Admin
* Interviewing
* Investigate patches for literal pool layout bug
* Took longer than expected as the 'simple' fix is wrong due to GCC not
knowing how large instructions actually are.
* Patch posted upstream
* Post triplet backport patches upstream
* Other bug issues
* Including an issue running SPEC2K on x86 with recent trunk
== Next Week ==
* Run HOT/COLD partitioning benchmarks
* Analyse ARM results
* On x86_64 to see what the actual benefit we could get
* initial-aarch64-backport & aarch64-baremetal-testing
* Finish documentation
* gcc-investigate-lra-for-arm
* Analyse benchmarks
* fix-gcc-multiarch-testing
* Come up with strawman proposal for updating testsuite to handle
testing with varying command-line options.
== Future ==
* backport-fma-intrinsic & fused-multiply-add-support
* Backport patches once fix-gcc-multiarch-testing has been done.
--
Matthew Gretton-Dann
Linaro Toolchain Working Group
matthew.gretton-dann(a)linaro.org
Hi,
I try ARM, MIPS, PowerPC and X86 on povray benchmark. No one can
shrink-wrap function Ray_In_Bound.
Here is:
bool Ray_In_Bound (RAY *Ray, OBJECT *Bounding_Object)
{
...
for (Bound = Bounding_Object; Bound != NULL; Bound = Bound->Sibling)
{...}
return (true);
}
For ARM O2/O3, "Bound" is allocated to "r6" during ira. So there is copy
r6 = r1 before
testing Bound != NULL
The copy (using r6) blocks the shrink-wrap optimization since r6
should be saved. Need enhance shrink-wrap to handle this case.
Overall, for povray benchmark,
54 functions are shrink-wrapped for ARM;
59 functions are shrink-wrapped for X86;
25 functions are shrink-wrapped for MIPS;
26 functions are shrink-wrapped for PowerPC.
Thanks!
-Zhenqiang
On 15 November 2012 01:58, 남관우 <kw46.nam(a)samsung.com> wrote:
>
> Hi,
>
>
>
> As your guide, i tried to build again.
>
>
>
> without : -mapcs -fno-common -fstack-protector --param==ssp=buffer-size=4
>
>
> and -fPIC instead of -fpic
>
>
>
> But it is failed with same the message. (/usr/lib/libnfc-common-lib.so.1: unexpected reloc type 0x03)
>
>
>
> Thank you,
>
> Kwanwoo Nam.
>
>
>
> ------- Original Message -------
>
> Sender : 남관우<kw46.nam(a)samsung.com> S4(선임)/선임/SLP개발그룹(무선)/삼성전자
>
> Date : 2012-11-14 21:45 (GMT+09:00)
>
> Title : Re: Re: Re: unexpected reloc type 0x03 error with gcc-4.6.4 (2012.10 version)
>
>
>
> Hi,
>
>
>
> Here is our LDFLAGS.
>
> -Wl,--rpath=/usr/lib -Wl,--as-needed
>
>
>
> And i try to build with your guide.
>
> without : -mapcs -fno-common
> and -fPIC instead of -fpic
>
>
>
> But it is failed with same the message. (/usr/lib/libnfc-common-lib.so.1: unexpected reloc type 0x03)
Ta. I'm afraid we don't have enough information to solve this.
Could you please send a full build log and we can go from there.
gzipped on a public server is best.
-- Michael
== Blueprints ==
Initial Current Actual
initial-aarch64-backport 31 Oct 2012 30 Nov 2012
aarch64-baremetal-testing 31 Oct 2012 30 Nov 2012
fix-gcc-multiarch-testing 31 Dec 2012 31 Dec 2012
backport-fma-intrinsic 31 Dec 2012 31 Dec 2012
fused-multiply-add-support 31 Dec 2012 31 Dec 2012
gcc-investigate-lra-for-arm 31 Dec 2012 31 Dec 2012
== Progress ==
* Admin
* Interviewing
* Hand over prep with Michael
* Release Week
* Made 2012.11 releases of gcc-linaro 4.6 and 4.7.
* LEG interations:
* Investigated CILK+ and how much work to port to AArch64.
* HOT/COLD partitioning
* Ran benchmarks on ARM
* LRA
* Ran x86-64 benchmarks
== Next Week ==
* Investigate patches for literal pool layout bug
* Post triplet backport patches upstream
* Run HOT/COLD partitioning benchmarks
* Analyse ARM results
* On x86_64 to see what the actual benefit we could get
* initial-aarch64-backport & aarch64-baremetal-testing
* Finish documentation
* gcc-investigate-lra-for-arm
* Analyse benchmarks
* fix-gcc-multiarch-testing
* Come up with strawman proposal for updating testsuite to handle
testing with varying command-line options.
== Future ==
* backport-fma-intrinsic & fused-multiply-add-support
* Backport patches once fix-gcc-multiarch-testing has been done.
--
Matthew Gretton-Dann
Linaro Toolchain Working Group
matthew.gretton-dann(a)linaro.org
== Progress ==
* Infrastructure:
- Managed to have my laptop re-installed by IT with a native Ubuntu 12.04,
(as a beta tester).
- Re-setup my working environment.
* GCC release process familiarization.
* Boehm GC AArch64 support:
- Resume libatomic-ops work.
* Some internal support
== Next ==
* Continue on the Boehm GC AArch64 support.
