- linaro-toolchain - lists.linaro.org

by Zhenqiang Chen

Summary: * Exercise crosstool-ng and summarize the gaps. Details: * Exercise crosstool-ng (1) Sync with lp:~linaro-toolchain-dev/crosstool-ng/linaro. (2) Try to config linux-host-baremental-target an mingw32-host-baremental-target. (3) Try to build the toolchain for both embedded toolchain and linaro-gcc-4.6-2011.10 with the config. . C compiler for linux and mingw32 hosts and c++ compiler for linux host can be built without any change. . C++ compiler for mingw32 host can be built after PCH is disabled. . GDB-cross build fail due to dependence packages. * Gaps in crosstool-ng (1) Improve GDB-cross scripts to download and build the dependence packages: expat and ncurses. Or put expat and ncurses as companion_libraries. (2) To remove dependence, embedded toolchain requires more prerequisites like zlib. New config and scripts are required to support the packages. (3) Currently, the embedded toolchain source packages are released as a tarball, which includes gcc, gmp, etc. New scripts are required to support it. (4) To make sure the toolchain can run with lower version glibc like redhat4/5, the embedded toolchain requires lower version native gcc4.3.6 to build it. To support it, . Users can build the native gcc manually, or . Enhance the scripts to add one step to build native gcc. (5) All the default package configurations are different from embedded toolchain internal build scripts. Since the configurations in embedded toolchain had been tuned and tested, we will change the configurations in crosstool-ng if they do not match and not configurable. The same rule will apply for linaro toolchain. Plans: * Write scripts to re-pack the embedded toolchain source packages. * Add the supports for all prerequisites in crosstool-ng menuconfig. Thanks! -Zhenqiang

13 years, 7 months

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[ACTIVITY] 24th - 28th October

by Andrew Stubbs

Posted a patch upstream to fix big-endian for generic tuning. This was a simple omission from my previous patches. Merged GCC 4.6.2 to Linaro GCC. It's still in testing now, so I'll have to commit it sometime over the weekend or next week. Looked at the benchmark results from Spec2000 running on both A8 and A9 systems, with and with NEON, and with various compiler options. Posted the results in a spreadsheet (visible within Linaro only). Begun making adjustments to generic tuning and started new spec2k runs to see if they are beneficial. First, I'm trying A9 prefetch settings on A8 to see how much damage it does. Next I'll try enabling the A8 NEON tuning settings on A9 to see what happens there. Prepared for travel next week. Vacation Friday

13 years, 7 months

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[ACTIVITY] October 23-27

by Ira Rosen

Hi, - Merged to gcc-linaro: - widening shifts - SLP features: support loads with different offsets and swap operands if necessary - Started rewriting SLP analysis to support operations with more than two operands (towards SLP of conditions) - Updated NEON presentation following Ramana's suggestions (thanks!) - Suggested to Ramana to implement vcond with mixed types, created a blueprint: https://blueprints.launchpad.net/gcc-linaro/+spec/vcond-with-mixed-types - Vectorizer: - updated vectorizer's webpage - updated vectorizer's wiki page - the usual maintenance - Committed upstream two SLP data-ref analysis improvements: PR 50730 and PR 50819 Ira

13 years, 7 months

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Toolchain Connect sessions

by Michael Hope

Hi there. Connect is just around the corner. Have a look at: https://wiki.linaro.org/MichaelHope/Sandbox/Q4.11Plans for a summary of the toolchain sessions and hacking topics. It would be great to have kernel and OCTO input in the ARM STM driver, Kernel debugging, and KVM sessions. -- Michael

13 years, 7 months

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Toolchain performance call during connect.

by Ramana Radhakrishnan

Hi Folks, Draft agenda for the performance meeting next week at Connect - https://blueprints.launchpad.net/gcc-linaro/+spec/linaro-toolchain-performa… Are there any topics that people would like to bring up during this meeting other than the ones listed here ? I suspect that we'll probably just have about 10-15 minutes for a topic in this case. I am not considering discussing PGO related stuff in this session given that we've got another session in which we can discuss this. Thoughts ? cheers Ramana

13 years, 7 months

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Performance improvements hacking time at Connect Q4.11

by Ramana Radhakrishnan

Hi Folks, I've been trying to capture what we want to do in terms of hacking time and some of the performance related backlog that we have in the system. I have done so here. https://wiki.linaro.org/RamanaRadhakrishnan/Sandbox/Q411ConnectGCCPerfPlan I'm on vacation tomorrow but should be picking email for sometime during the day. Thoughts about what else we could be doing in this area or if there's a better way we could use our hacking time. cheers Ramana ---

13 years, 7 months

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Building gcc-linaro 4.6 2011.10 on ubuntu 11.10 32bit for cortex-a9

by Bruno Niklaus

hi@all i try to build the linaro-gcc on a ubuntu host 11.10 32 bit for a cortex a9. but it doenst build to the end. this is the first time ever i try to build a toolchain on my own, so excuse me if its just a beginner-mistake. somebody has any idea? configured like this *./configure --target=arm-linux-gnueabi --disable-bootstrap --enable-languages=c,c++ --with-mode=thumb --with-arch=armv7-a --with-tune=cortex-a9 --with-fpu=neon --with-float=softfp --prefix=/home/user/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10* * * no errors when configuring, but it fails during building with this error: *checking for suffix of object files... configure: error: in `/home/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10_src/arm-linux-gnueabi/libgcc': * *configure: error: cannot compute suffix of object files: cannot compile* *See `config.log' for more details.* *make[1]: *** [configure-target-libgcc] Fehler 1* *make[1]: Verlasse Verzeichnis '/home/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10_src'* *make: *** [all] Fehler 2* when i check the ./arm-linux-gnueabi/libgcc/config.log the errors which return 1 are: *configure:3028: /home/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10_src/host-i686-pc-linux-gnu/gcc/xgcc -B/home/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10_src/host-i686-pc-linux-gnu/gcc/ -B/home/user/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10/arm-linux-gnueabi/bin/ -B/home/user/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10/arm-linux-gnueabi/lib/ -isystem /home/user/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10/arm-linux-gnueabi/include -isystem /home/user/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10/arm-linux-gnueabi/sys-include -V >&5* *xgcc: error: unrecognized option '-V'* *xgcc: fatal error: no input files* *compilation terminated.* *configure:3039: $? = 1* *configure:3028: /home/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10_src/host-i686-pc-linux-gnu/gcc/xgcc -B/home/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10_src/host-i686-pc-linux-gnu/gcc/ -B/home/user/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10/arm-linux-gnueabi/bin/ -B/home/user/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10/arm-linux-gnueabi/lib/ -isystem /home/user/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10/arm-linux-gnueabi/include -isystem /home/user/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10/arm-linux-gnueabi/sys-include -qversion >&5* *xgcc: error: unrecognized option '-qversion'* *xgcc: fatal error: no input files* *compilation terminated.* *configure:3039: $? = 1* *configure:3055: /home/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10_src/host-i686-pc-linux-gnu/gcc/xgcc -B/home/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10_src/host-i686-pc-linux-gnu/gcc/ -B/home/user/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10/arm-linux-gnueabi/bin/ -B/home/user/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10/arm-linux-gnueabi/lib/ -isystem /home/user/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10/arm-linux-gnueabi/include -isystem /home/user/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10/arm-linux-gnueabi/sys-include -o conftest -g -O2 conftest.c >&5* */home/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10_src/host-i686-pc-linux-gnu/gcc/as: line 87: exec: -m: invalid option* *exec: usage: exec [-cl] [-a name] [command [arguments ...]] [redirection ...]* *configure:3058: $? = 1* *configure:3246: checking for suffix of object files* *configure:3268: /home/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10_src/host-i686-pc-linux-gnu/gcc/xgcc -B/home/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10_src/host-i686-pc-linux-gnu/gcc/ -B/home/user/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10/arm-linux-gnueabi/bin/ -B/home/user/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10/arm-linux-gnueabi/lib/ -isystem /home/user/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10/arm-linux-gnueabi/include -isystem /home/user/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10/arm-linux-gnueabi/sys-include -c -g -O2 conftest.c >&5* */home/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10_src/host-i686-pc-linux-gnu/gcc/as: line 87: exec: -m: invalid option* *exec: usage: exec [-cl] [-a name] [command [arguments ...]] [redirection ...]* *configure:3272: $? = 1* *configure: failed program was:* *| /* confdefs.h */* *| #define PACKAGE_NAME "GNU C Runtime Library"* *| #define PACKAGE_TARNAME "libgcc"* *| #define PACKAGE_VERSION "1.0"* *| #define PACKAGE_STRING "GNU C Runtime Library 1.0"* *| #define PACKAGE_BUGREPORT ""* *| #define PACKAGE_URL "http://www.gnu.org/software/libgcc/"* *| /* end confdefs.h. */* *| * *| int* *| main ()* *| {* *| * *| ;* *| return 0;* *| }* *configure:3286: error: in `/home/bruno/pandaboard/linaro/gcc-linaro-4.6-2011.10_src/arm-linux-gnueabi/libgcc': * *configure:3289: error: cannot compute suffix of object files: cannot compile* *See `config.log' for more details.*

13 years, 7 months

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ARM eglibc: adding ucontext?

by Peter Maydell

At the moment ARM eglibc doesn't support the functions declared in ucontext.h: getcontext(), setcontext(), swapcontext() and makecontext(). Instead you get implementations which always fail and set errno to ENOSYS. QEMU uses these functions to implement coroutines. Although there is a fallback implementation in terms of threads, there are reasons why using the fallback is suboptimal: * its performance is worse * it will be less tested, because x86_64 and i386 both implement the ucontext functions and so QEMU on those hosts will be using different code paths * I'm not aware of a good way at configure time to detect whether getcontext() et al will always fail without actually running a test binary, which won't work in a cross-compile setup. (If eglibc just didn't provide the functions at all this would be much simpler...) We're going to care about performance and reliability of QEMU on ARM hosts as we start to support KVM on Cortex-A15, so it would be good if we could add ucontext function support to eglibc as part of that effort. Opinions? Have I missed some good reason why there isn't an ARM implementation of these functions? (I'm aware that the ucontext functions have been removed from the latest version of the POSIX spec; however AFAIK there's no equivalent functionality that replaces them so I think they're still worth having implementations of for parity with other architectures.) -- PMM

13 years, 7 months

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[Activity] Week ending 21st Oct 2011

by Ramana Radhakrishnan

==Progress=== * Some upstream patch review. * Spent time looking at LP 836588 which is a case where CSE removes a particular label access in one case but doesn't remove it from the list of things in the constant pool which is quite bizarre. Will probably need some help with looking into this one. * Sent out vcvt.f32 and vcvt.f64 patches . * Connect preparation - laptop cleanup and getting it finally onto an x86_64 distribution. * Looked at some of the vec_perm / vec_rev cases in Neon with Ira. * Spent some time looking at some of Andrew's issues with generic-v7a tuning especially the cases where it was doing better and gave some suggestions. === Plans === * Prepare for Connect. * Prepare by looking at some of the large differences between various comparative benchmarks. * Some research into PGO related stuff. * Try to upstream some more of my patches in the backlog before the end of the week. * Finish off some internal paperwork. * I'm off on 26th - Wednesday. Absences. * 26th Oct - Day off. * 31st Oct - 4th Nov - Linaro Connect Q4.11 * 08 Nov - 11 Nov - Tentatively booked * Dec 19 - 31st Dec - Tentatively booked

13 years, 7 months

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[ACTIVITY] 17th - 21st October

by Andrew Stubbs

Continued looking at my constant reuse optimization. I've identified a couple of hundred optimization opportunities in the whole of gcc itself, which is fewer than I had hoped. There are almost no opportunities when compiling for size as constants are always loaded from a constant pool in that case (I'm not sure why that's the case, given that this isn't any more space efficient than movw+movt, unless it can share the constant in more than one place). Backported my -mtune=native patch to Linaro GCC. Backported my generic tuning patch to Linaro GCC. Backported my pr50717 patch to Linaro, and pushed to Launchpad for testing. Analysed my benchmark results I made to aid generic tuning. Disappointingly the A8/A9 tuning is not as beneficial as one would like. In fact, the existing generic tuning patch (which was supposed to be a framework only) is actually quite competitive and gives better performance in some cases. Set more benchmarks running, this time with NEON enabled. That's about 36 hour's worth on A9, and more like 90 hours on my A8 (obviously, there's some difference in the clock speeds there). Discovered that my native tuning code won't compile with a C++ compiler (GCC Bugzilla PR50809). Tested and committed a fix upstream.

13 years, 7 months

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[ACTIVITY] weekly status

by Revital Eres

Hello, Continue the implementation of estimating register pressure in SMS. Discussed with Richard some issue raised while implementing. Revital

13 years, 7 months

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[ACTIVITY] Oct 17 - Oct 21

by Ulrich Weigand

== GDB == * Worked on support for cross-platform core file generation. Posted initial set of patches for comments. * Created "Toolchain support for kernel debugging" blueprint. Mit freundlichen Gruessen / Best Regards Ulrich Weigand -- Dr. Ulrich Weigand | Phone: +49-7031/16-3727 STSM, GNU compiler and toolchain for Linux on System z and Cell/B.E. IBM Deutschland Research & Development GmbH Vorsitzender des Aufsichtsrats: Martin Jetter | Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen | Registergericht: Amtsgericht Stuttgart, HRB 243294

13 years, 7 months

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[ACTIVITY] weekly status

by Ken Werner

Hi, I made some progress on transforming the hacks I did to get libunwind working on Android into proper patches that can go upstream. Things learned: * bionic employs OpenBSD header files that therefore lack some GNU and ARM specific defines (only small fix needed - plan is to change libunwind to work with non-patched bionic too) * Android basically provides all the functionality that is required for libunwind-ptrace - but... * no one seems to build libunwind with remote unwind functionality (including libunwind-ptrace) only * most of the issues can be avoided by changing libunwind to be more portable Regards Ken

13 years, 7 months

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[ACTIVITY] w42

by Asa Sandahl

* Still having trouble with using multistrap/pdebuild-cross for cross-compiling Firefox - it looks like only x86 packages get downloaded, not armel. I have asked Wookey for advice, and he will try to reproduce the build. * Falling back to native compiling until the cross-compiling set up has been sorted out. I will now take a look at how to pass different compiler options to the Mozilla build system and how to build different parts of the program. Best Regards Åsa

13 years, 7 months

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[ACTIVITY] report week 42

by Peter Maydell

(short week: 4 days) RAG: Red: Amber: Green: blog started :-) http://translatedcode.wordpress.com/ Current Milestones: || || Planned || Estimate || Actual || ||a15-usermode-support || 2011-11-10 || 2011-11-10 || || ||upstream-omap3-cleanup || 2011-11-10 || 2011-11-10 || || Historical Milestones: ||qemu-linaro-2011-07 || 2011-07-21 || 2011-07-21 || 2011-07-21 || ||qemu-linaro 2011-08 || 2011-08-18 || 2011-08-18 || 2011-08-18 || ||qemu-linaro 2011-09 || 2011-09-15 || 2011-09-15 || 2011-09-15 || ||add-omap3-networking || 2011-10-13 || 2011-10-13 || 2011-10-13 || ||a15-systemmode-planning || 2011-10-13 || 2011-10-13 || 2011-09-22 || == other == * upstream patch review, putting together pull requests * more time spent on qemu on ARM host apparent memory corruption bug (no luck yet :-(); found a Valgrind bug in the process, though (KDE:284472). This ate up way too much of this week. * A15 KVM planning work * meetings etc * moved over to patches.linaro for QEMU patch tracking -- PMM

13 years, 7 months

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[ACTIVITY] October 16-19

by Ira Rosen

Hi, * widening shifts - finally committed upstream * SLP loads with different offsets and operand swaps - committed upstream * SLP with multiple types - merged to gcc-linaro-4.6 * vectorizer stuff: patch review, test fixes, discussions, bug fix * Ramana and I discussed what can be done with VEC_PERM_EXPR for NEON, and created https://blueprints.launchpad.net/gcc-linaro/+spec/support-vec-perm for this issue. Ira

13 years, 7 months

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64 bit operations

by Michael Hope

Following on from last night's performance call, I had a look at how 64 bit integer operations are mapped to NEON instructions. The summary is: * add - fine * subtract - fine * bitwise and - fine * bitwise or - fine * bitwise xor - fine * multiply - can't as the instruction tops out at 32 bits. Might be able to compose using VMLAL * div, mod - no instruction * negate - instruction tops out at 32 bits, but could be turned into vmov #0, vsub * left shift constant - missing * right shift constant - missing * right arithmetic shift constant - missing * left shift register - missing * right shift register - tricky, as you do this as a left shift -register * not - no instruction, but could be done through a vceq, #0? * bitwise not - missing I also noticed that the replicated constants aren't being used. A pre-increment is load constant pool; vadd but could be done as a vmov, #-1; vsub. The same with pre-decrement - it could be done as a vmov, #-1; vadd. This seems worth blueprinting. -- Michael

13 years, 7 months

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agenda for today's call.

by Ramana Radhakrishnan

https://wiki.linaro.org/WorkingGroups/ToolChain/Meetings/2011-10-18 I don't have much for this week personally given I've had 2 very short weeks. Ramana

13 years, 7 months

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limits-fndefn.c and timeouts

by Michael Hope

limits-fndefn.c takes an impressively long time to run. On an idle machine, -O3 -g -c takes 17:31 and -O2 -g -c takes The test already has a dg-timeout-factor of 4 giving a total timeout of 20 minutes. Removing the -g brings this down to 30 s. Keeping the -g and adding -fno-var-tracking brings this down to 45 s. We could bump the multiplier up to 8 but it's getting a bit ridiculous. Any thoughts? -- Michael

13 years, 7 months

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[ACTIVITY] Weekly status

by Richard Sandiford

== Last week and today == * Backported fix for returning std::pair<bool, bool>. Unfortunately this showed up a regression on 4.5. I couldn't reproduce it cross, and the testcase itself looks innocuous, so I'm wondering whether the patch might trigger a miscompilation of cc1plus. * Committed SMS register-scheduling patches upstream and backported to Linaro 4.6. * Most of the week spent on -fsched-pressure. Still trying a few variations in order to get the right balance. (My local haifa-sched.c now has about 20 new toggles.) Still feel like I'm making progress, rather than hitting the point of diminishing returns. Hope Connect goes well. See everyone in a few weeks' time. Richard

13 years, 7 months

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[ACTIVITY] 10th - 14th October

by Andrew Stubbs

Completed the 4.5 and 4.6 FSF to Linaro merges. Spun the Linaro GCC release tarballs, uploaded them to the test farm, and set off the test builds. Continued looking at the constant reuse optimization. This time I've build GCC itself with the new pass to see how many optimization opportunities there are. This shook out a lot more small bugs, which was useful. Backported my negative-shifts patch to Linaro 4.6, pushed it to Launchpad for testing, and then committed it to 4.6 once in was approved. Experimented with running SPEC2K on A8 and A9 boards in order to establish a baseline for the generic tuning tweaks. A short test doesn't give much clue as to what can be achieved, and a long test takes way too long. The problem is also complicated by the benchmarks where the A8 tuning works better on A9 than A9 tuning does. :S Received a bug report (GCC bugzilla 50717) for my widening multiplies patches. Analysed the problem, developed a patch, and posted it to gcc-patches.

13 years, 7 months

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[Activity] Week ending 14th October 2011

by Ramana Radhakrishnan

<Short week with 2 days gone on an internal training course> ==Progress=== * Some patch review. * Spent time looking at LP 836588. * Tried some different approaches for the vcvt.f64.s32 case and it looks like the simple solution is the best one unfortunately :( * 2 days off at internal training course. === Plans === * continue looking into LP 836588 * Patch review week/ * Work on getting vcvt.f* case done and finish some of the backlog. Absences. * 31st Oct - 4th Nov - Linaro Summit Orlando - Travel booked - * 08 Nov - 11 Nov - Tentatively booked * Dec 19 - 31st Dec - Tentatively booked

13 years, 7 months

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Screwy panda timing?

by David Gilbert

I've just tried rerunning some benchmarks on my panda, which I reinstalled recently and am getting some odd behaviour: The kernel is 3.0.0-1404-linaro-lt-omap For example: simple_strlen: ,102400, loops of ,62, bytes=6.054688 MB, transferred in ,20324707.000000 ns, giving, 297.897898 MB/s simple_strlen: ,102400, loops of ,32, bytes=3.125000 MB, transferred in ,7904053.000000 ns, giving, 395.366782 MB/s simple_strlen: ,102400, loops of ,16, bytes=1.562500 MB, transferred in ,7354736.000000 ns, giving, 212.448142 MB/s simple_strlen: ,102400, loops of ,8, bytes=0.781250 MB, transferred in ,91553.000000 ns, giving, 8533.308575 MB/s simple_strlen: ,102400, loops of ,4, bytes=0.390625 MB, transferred in ,1495361.000000 ns, giving, 261.224547 MB/s simple_strlen: ,102400, loops of ,2, bytes=0.195312 MB, transferred in ,1983643.000000 ns, giving, 98.461518 MB/s Note the 8 byte one apparently 40 times faster, and for true oddness: smarter_strlen_ldrd: ,102400, loops of ,62, bytes=6.054688 MB, transferred in ,3936768.000000 ns, giving, 1537.984331 MB/s smarter_strlen_ldrd: ,102400, loops of ,32, bytes=3.125000 MB, transferred in ,0.000000 ns, giving, inf MB/s smarter_strlen_ldrd: ,102400, loops of ,16, bytes=1.562500 MB, transferred in ,4180909.000000 ns, giving, 373.722557 MB/s Now, while I like infinite transfer rates, I suspect they're wrong. Anyone else seeing this? Dave

13 years, 7 months

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[ACTIVITY] weekly status

by Revital Eres

Implementing estimating register pressure in SMS. Experimenting with the implementation on libav microbench. Discussed with Richard some issue raised while implementing.

13 years, 7 months

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[ACTIVITY] Oct 10 - Oct 14

by Ulrich Weigand

== GDB == * Created and published Linaro GDB 7.3-2011.10 release. * Fixed LP #871901 (Linaro GDB crashes on 3.x kernels) in mainline and Linaro GDB 7.3. * Backported mainline fix for LP #829595 (Separate debuginfo misidentified with "remote:" access) to Linaro GDB 7.3. * Completed blueprint "GDB as a cross-debugger". * Worked on support for cross-platform core file generation. == GCC == * Patch review week. Mit freundlichen Gruessen / Best Regards Ulrich Weigand -- Dr. Ulrich Weigand | Phone: +49-7031/16-3727 STSM, GNU compiler and toolchain for Linux on System z and Cell/B.E. IBM Deutschland Research & Development GmbH Vorsitzender des Aufsichtsrats: Martin Jetter | Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen | Registergericht: Amtsgericht Stuttgart, HRB 243294

13 years, 7 months

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[ACTIVITY] 2011-10-14

by David Gilbert

== 64 bit atomics == * Thanks to Ramana for OKing my gcc patches; and Richard for committing them - I've backported these to the gcc-linaro branch and pushed it - hopefully those will pass OK! == String routines == * Sent my memchr patch to upstream newlib, received comments, tweeked, and resent * Sent strlen patch to upstream newlib * Spent some time getting confused by timing issues on our Panda; it got reinstalled with 11.09 a few weeks ago and is now showing some odd behaviours. In particular I'm seeing some tests show completion in 0ns (and my code isn't -that- fast!), and others where the times vary wildly - it's almost as if a timer interrupt is delayed or missing; my same test binary works fine on one of Michael's Ursa's running an older install. == QEMU == * Tested Peters QEMU image for release == Other == * Spent an afternoon reading through the System trace docs On holiday next week; I'll poll email occasionally. Dave

13 years, 7 months

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[ACTIVITY] weekly status

by Ken Werner

Hi, * working through my inbox after being away * a former patch of mine accidentally broke remote unwinding on IA64 * maintainer made a quick fix that made things worse for ARM * posted a patch that aims to fix things up for all archs * identified and submitted libunwind-android patches that could go upstream * sent patch that lets another testcase pass on ARM Linux * tried to help people on the mailing list with various issues Regards Ken

13 years, 7 months

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[ACTIVITY] report week 40

by Peter Maydell

RAG: Red: Amber: Green: Current Milestones: || || Planned || Estimate || Actual || ||add-omap3-networking || 2011-10-13 || 2011-10-13 || 2011-10-13 || ||a15-systemmode-planning || 2011-10-13 || 2011-10-13 || 2011-09-22 || ||a15-usermode-support || 2011-11-10 || 2011-11-10 || || ||upstream-omap3-cleanup || 2011-11-10 || 2011-11-10 || || Historical Milestones: ||qemu-linaro 2011-04 || 2011-04-21 || 2011-04-21 || 2011-04-21 || ||qemu-linaro 2011-05 || 2011-05-19 || 2011-05-19 || n/a || ||close out 1105 blueprints || 2011-05-28 || 2011-05-28 || 2011-05-19 || ||complete 1111 planning || 2011-05-28 || 2011-05-28 || 2011-05-27 || ||qemu-linaro-2011-06 || 2011-06-16 || 2011-06-16 || 2011-06-16 || ||qemu-linaro-2011-07 || 2011-07-21 || 2011-07-21 || 2011-07-21 || ||qemu-linaro 2011-08 || 2011-08-18 || 2011-08-18 || 2011-08-18 || ||qemu-linaro 2011-09 || 2011-09-15 || 2011-09-15 || 2011-09-15 || == add-omap3-networking == * patches pushed into qemu-linaro and final testing done == a15-usermode-support == * this is now in qemu-linaro 2011.10; only remaining thing is for the patches to be taken upstream (no major review issues) == linaro-qemu-11.11 == * qemu-linaro 2011.10 released == other == * completed a desk move * some sw/hw archaeology to answer a question about the FIFO size of the PL041 on ARM devboards as part of reviewing audio support patch * trying to track down a really weird problem where qemu on ARM host dies with apparent memory corruption

13 years, 7 months

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[ACTIVITY] w41

by Asa Sandahl

* Working on using pdebuildcross/multistrap when cross compiling Firefox. With multistrap all dependencies should be sorted out automatically. The current status is that pdebuild-cross for armel is set up and the compilation of the Firefox package starts. Does not come all the way though, because some dependencies (for X11) are not in place after all. Will continue investigation. Best Regards Åsa

13 years, 7 months

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upstream planning using Linaro process

by Mounir Bsaibes

A lot of concerns were raised about how to plan for upstreaming work using Linaro process while there is no guarantees for acceptance. Deepak has setup a session to address this issue and come up with a reasonable solution to the problem. In preparation, I have put together this google doc and shared it with all in Linaro. https://docs.google.com/a/linaro.org/document/d/1Inj3Esvk4Lbqe5PN7NHnK1WKRa… Please take a look at this document ahead of the session, if you have a proposal for a solution (or any other feedback) please let us know, so we can add it to the discussion. We are hoping a lot of engineers would provide feedback and attend the session so we can come up with a conclusion. To subscribe to the session please follow: https://blueprints.launchpad.net/linaro/+spec/linaro-general-upstream-proce… Thanks & regards, Mounir -- Mounir Bsaibes Project Manager Follow Linaro.org: facebook.com/pages/Linaro/155974581091106 http://twitter.com/#!/linaroorg http://www.linaro.org/linaro-blog <http://www.linaro.org/linaro-blog>

13 years, 7 months

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Linaro QEMU 2011.10 released

by Peter Maydell

The Linaro Toolchain Working Group is pleased to announce the release of Linaro QEMU 2011.10. Linaro QEMU 2011.10 is the latest monthly release of qemu-linaro. Based off upstream (trunk) QEMU, it includes a number of ARM-focused bug fixes and enhancements. New in this month's release: - Instructions introduced with the Cortex-A15 (ARM mode SDIV and UDIV, and the VFPv4 fused multiply-accumulate instructions VFMA, VFMS, VFNMA, VFNMS) are now supported in linux-user mode - Beagle models now support USB networking (run the model with "-usb -device usb-net,netdev=mynet -netdev user,id=mynet") Known issues: - There may be some problems with running multithreaded programs in linux-user mode (LP:823902) The source tarball is available at: https://launchpad.net/qemu-linaro/+milestone/2011.10 Binary builds of this qemu-linaro release are being prepared and will be available shortly for users of Ubuntu. Packages will be in the linaro-maintainers tools ppa: https://launchpad.net/~linaro-maintainers/+archive/tools/ More information on Linaro QEMU is available at: https://launchpad.net/qemu-linaro

13 years, 7 months

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Linaro GCC 4.6 and 4.5 2011.10 released

by Michael Hope

The Linaro Toolchain Working Group is pleased to announce the 2011.10 release of both Linaro GCC 4.6 and Linaro GCC 4.5. Linaro GCC 4.6 2011.10 is the eighth release in the 4.6 series. Based off the latest GCC 4.6.1+svn179483, it contains a range of vectoriser performance improvements and general bug fixes. Interesting changes include: * Updates to 4.6.1+svn179483 * Vectorises more straight-line code with data dependencies * Now picks the best vector width when vectorising straight line code * Better handles handling auto increment addresses in SMS * Changes the default vector width from double word to quad word * Better handling extracting the top or bottom half of a quad word vector * Now supports the NEON absolute difference instruction Fixes: * LP: #689887 ICE in get_arm_condition_code * LP: #809761 oss4 version 4.2-build2004-1ubuntu1 failed to build on armel Linaro GCC 4.5 2011.10 is the fifteenth release in the 4.5 series. Based off the latest GCC 4.5.3+svn179438, this is a maintenance focused release. Interesting changes in 4.5 include: * Updates to 4.5.3+svn179438 Fixes: * LP: #689887 ICE in get_arm_condition_code The source tarballs are available from: https://launchpad.net/gcc-linaro/+milestone/4.6-2011.10 https://launchpad.net/gcc-linaro/+milestone/4.5-2011.10 Downloads are available from the Linaro GCC page on Launchpad: https://launchpad.net/gcc-linaro More information on the features and issues are available from the release page: https://launchpad.net/gcc-linaro/4.6/4.6-2011.10 https://launchpad.net/gcc-linaro/4.5/4.5-2011.10 Mailing list: http://lists.linaro.org/mailman/listinfo/linaro-toolchain Bugs: https://bugs.launchpad.net/gcc-linaro/ Questions? https://ask.linaro.org/ Interested in commercial support? inquire at support(a)linaro.org -- Michael

13 years, 7 months

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Linaro GDB 7.3 2011.10 released

by Ulrich Weigand

The Linaro Toolchain Working Group is pleased to announce the release of Linaro GDB 7.3. Linaro GDB 7.3 2011.10 is the third release in the 7.3 series. Based off the latest GDB 7.3, it includes a number of ARM-focused bug fixes and enhancements. This release contains: * Support for disabling address space randomization in gdbserver * Fix for GDB crashes on 3.x kernels * Fix spurious "CRC mismatch" warnings when using "remote:" sysroot The source tarball is available at: https://launchpad.net/gdb-linaro/+milestone/7.3-2011.10 More information on Linaro GDB is available at: https://launchpad.net/gdb-linaro

13 years, 7 months

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[ACTIVITY] October 9-12

by Ira Rosen

Hi, * Finished a presentation for NEON forum. Revital and Richard kindly agreed to take a look and gave me some valuable comments. Thanks! * widen-shifts: - While preparing the presentation I found some room for improvement in the pattern detection, so I implemented it. It gave additional 13% to rgb24tobgr16. - Ramana suggested a solution on how to check the constant operand of vshll. Testing these two things on ARM. * SLP improvements: - Implemented a patch that swaps operands if necessary to make the operations isomorphic, and supports loads with different offsets. Testing it now. - The three relevant libav loops now get vectorized giving 42%-57% speedup. Next week holidays: half days Sunday-Wednesday and Thursday. Ira

13 years, 7 months

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Binary toolchain questions summary

by Michael Hope

Here's my summary from Monday's meeting on the harder parts of binary toolchains. Using a 4.6 compiler against a 4.5 based sysroot such as Natty: * libgcc and libstdc++ are part of the compiler * The compiler expects features that are in the corresponding runtime * You can't reliably run or validate against an earlier runtime The solution is to upgrade the runtime on the sysroot to 4.6. 4.6 is backwards compatible. Ubuntu did this with Maverick and it caused no problems, although problems such as Debian #622783 have been seen. Multiarch: * The Ubuntu multiarch patch should work with a sysroot * Multiarch and multilib should work together Multilib: * The current ARM multilib rules are old and not very relevant * Multilib means you need multiple sysroots as well * Skip multilib for the first release Other: * Anything we support in cross we should support native first * Check that we don't have to directly supply the source that goes with the binary sysroot -- Michael

13 years, 7 months

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How to install an ARM cross compiler

by Andrew Stubbs

Saw this, thought it might be interesting if we want to point people at it something in future .... http://playterm.org/r/install-an-arm-cross-compiler-1316950150 Maybe we could record some more detailed stuff ourselves? Andrew

13 years, 7 months

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[Activity] Week ending 7th Oct. 2011

by Ramana Radhakrishnan

==Progress=== * Out of office for a day. * Wrote a quick patch to do vcvt.f32.s32 with fractional bits where we can. Tested no regressions, need to commit this after review upstream. * Desk move and packing for that. * Looked at a bug report LP 836588 appears to go away with fno-gcse. Needs more digging. === Plans === * Look at LP 836588. * Finish auto-inc-dec pipeline scheduling work. * Clear out some of the old patches (POST_MODIFY_DISP for vfp, BRANCH_COST ) * Settle into new desk. * Again a short week as I'm away for 2 days for an internal training event. Meetings: * 1-1s * TCWG calls Absences. * 5th October - out of office. * 13th - 14th October - Out of Office - Internal training event. * 31st Oct - 4th Nov - Linaro Summit Orlando - Travel booked - * 08 Nov - 11 Nov - Tentatively booked * Dec 19 - 31st Dec - Tentatively booked

13 years, 8 months

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[ACTIVITY] Weekly status

by Richard Sandiford

== Last week == * Patch review. * Backported second attempt to fix get_arm_condition_code ICE. * Worked on -fsched-pressure. Experimented with various combinations of ideas. This is giving some good results (e.g. a 2x improvement in libav's put_h264_qpel8_hv_lowpass_8) but needs a bit more work to fix some outliers. I'll be away from 18th Oct to 14th Nov. Richard

13 years, 8 months

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Native build performance

by Michael Hope

Random data for the day: Dave Pigott has installed some new PandaBoard build machines in the validation lab. They're identical to mine except that root is on USB Flash instead of NFS, and they have a much faster flash drive for the build area. The time taken to bootstrap and test gcc-linaro-2011.09 with C, C++, Fortran, and LTO is: * ursa3, ursa4 (Toshiba USB stick): 301 minutes build / 369 test * ursa2 (no-name USB stick): 324 minutes build / 422 test * tcpanda (fast USB stick): 274 minutes build / 265 test So the new combo gives a 1.38 x faster build. I'm surprised as I though the build was CPU bound. I'd hate to see what building on an SD card is like. Note that /tmp is in RAM, /scratch is ext4, the new boards use noatime, and the kernel doesn't have the new USB performance fix. -- Michael

13 years, 8 months

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[ACTIVITY] weekly status

by Revital Eres

Continue working on estimating register pressure with SMS: - Discussed current approach with Richard which gave useful leads. - Started to implement this approach. - Doing experiments on libav microbench.

13 years, 8 months

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Re: Use of memcpy() in libpng

by jbowler＠acm.org

The unaligned accesses in libpng are, for the large copies, a bug. Our attempt to align the row buffer to a 16 byte boundary was off-by-one so we end up always mis-aligning it. I've posted a patch on the png-mng-implement list: http://sourceforge.net/mailarchive/message.php?msg_id=28194444 The time spent in memcpy() is probably an illusion. The data out of zlib gets copied to one row buffer where it is unfiltered (if necessary) then a copy is made in a separate buffer that is only used for the filter handling. If you test using images with large rows (I don't know what pngbench does) the copy buffer may well get flushed out of the second level cache between each row, then the memcpy will stall bringing it back in. If you have machine level profiling you may see this as a massive time spike on some probably unrelated instruction which just happens to be in the PC when the stall stops everything. Anyway, I have several ideas of how to avoid the copy when it isn't required. John Bowler <jbowler(a)acm.org> -----Original Message----- From: Glenn Randers-Pehrson [mailto:glennrp@gmail.com] Sent: Monday, October 03, 2011 1:15 PM To: PNG/MNG implementation discussion list Subject: [png-mng-implement] Use of memcpy() in libpng [Fwd from linaro-toolchain list] Re: Use of memcpy() in libpng David Gilbert Tue, 27 Sep 2011 06:20:14 -0700 On 27 September 2011 14:16, Christian Robottom Reis <k...(a)linaro.org> wrote: > On Tue, Sep 27, 2011 at 09:47:33AM +0100, Ramana Radhakrishnan wrote: >> On 26 September 2011 21:51, Michael Hope <michael.h...(a)linaro.org> wrote: >> > Saw this on the linaro-multimedia list: >> > >> > http://lists.linaro.org/pipermail/linaro-multimedia/2011-September/ >> > 000074.html >> > >> > libpng spends a significant amount of time in memcpy(). This might >> > tie in with Ramana's investigation or the unaligned access work by >> > allowing more memcpy()s to be inlined. >> >> It's the unaligned access and the change / improvements to the memcpy >> that *might* help in this case. But that ofcourse depends on the >> compiler knowing when it can do such a thing. Ofcourse what might be >> more interesting is the kind of workload analysis that Dave's done in >> the past with memcpy to know what the alignment and size of the >> buffer being copied is. > > If you guys could take a look at this there is a potential requirement > for the MMWG around libpng optimization; we could fit this in along > with other work (possible vectorizing, etc) on that component. It wouldn't take long to analyse the memcpy calls - life would be easier if we had the test program and some details on things like what size of images were used in these benchmarks. Dave

13 years, 8 months

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[ACTIVITY] 3rd - 7th October

by Andrew Stubbs

Continued work on my constant reuse optimizations. Not too much this week though. I've now fixed some issues with the ARM size-costs code that was causing it to wildly over-estimate the cost of a MOVT instruction. I'll have to post this upstream sometime soon. Took another look at the shift-amount bug. Discussed the issue with Paul Brook. I've now fixed the original bug, and fixed the new bug introduced by Paul's original fix, and committed that upstream. I still need to backport it to Linaro GCC though, and the latent bug that Richard S spotted is still being analysed. Did a merge from FSF 4.5 & 4.6 to Linaro, and pushed them the Launchpad branches for testing. Begun work benchmarking different setups for the generic tuning patches. I had a lot of trouble trying to set up SPEC2000 though. Hopefully these issues are now resolved, with some help from Michael, and I have established some baseline figures on both A8 and A9 to work from. No progress on native tuning. I'm still waiting for upstream review. In other news: Mentor's contract with Linaro has now been extended for another 6 months. :)

13 years, 8 months

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[ACTIVITY] 2011-10-07

by David Gilbert

== String Routines == * Built and tested a newlib with my memchr in - ready to go with a bit of tidy up. * Followed up on my eglibc patch submission by a comment suggesting the use of --with-cpu pointing back at the previous discussion. == 64 Bit atomics == * Updated gcc patch based on Ramana's comments, retested and posted new version - Lost half a day to a failing SD card in our panda. == QEMU == * Posted a patch that made one variable thread local using __thread that fixes multi threaded user mode ARM programs (e.g. firefox); this seems to have mutated on the list into a patch for more general thread local support. Dave

13 years, 8 months

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[ACTIVITY] Oct 04 - Oct 07

by Ulrich Weigand

== GDB == * Reimplemented patch to disable address space randomization in gdbserver to respect the "set disable-randomization" command, and checked it in to mainline and Linaro GDB 7.3 * Worked on support for cross-platform core file generation. == GCC == * Checked in mainline fix for PR 50305. Mit freundlichen Gruessen / Best Regards Ulrich Weigand -- Dr. Ulrich Weigand | Phone: +49-7031/16-3727 STSM, GNU compiler and toolchain for Linux on System z and Cell/B.E. IBM Deutschland Research & Development GmbH Vorsitzender des Aufsichtsrats: Martin Jetter | Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen | Registergericht: Amtsgericht Stuttgart, HRB 243294

13 years, 8 months

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[ACTIVITY] October 2-6

by Ira Rosen

Hi, - worked on the RTL part of the widen-shift patch - backported to linaro 2/3 of the SLP patches, and proposed the third one - worked on additional SLP improvements: - swap operands to make statements isomorphic - support load with offset 1 (after load from 0) - started working on presentation for NEON forum Upcoming holidays: Oct 12, Wed - half day Oct 13, Thu Oct 16-19, Sun-Wed - half day Oct 20, Thu Ira

13 years, 8 months

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[RFC ARM] Use vcvt.f32.s32 with immediate bits to do fixed to floating point conversions.

by Ramana Radhakrishnan

Hi, So one of the things Michael pointed out in today's call was that the ARM backend doesn't generate vcvt.f32.s<type> where you have an idiom conversion from fixed to floating point as in the example below. I've chosen to implement this in the following manner in the backend using these interfaces from real.c . The reason I've chosen to not allow this transformation in case flag_rounding_math is true is because this instruction always ends up rounding using round-to-nearest rather than obeying whats in the FPSCR and thus is not safe for programs that want to dynamically set their rounding modes. The benefits are quite obvious in that we eliminate a load from the constant pool and a floating point multiply and thus essentially shaving off a floating point multiply + Load latency off these sequences. This instruction can only write the output into the same register as the input register which is why I've modelled it as below by tying op1 into op0. If there's a simpler way of using the interfaces into real.c then I'm all ears ? Thoughts ? I believe such idioms are used in libav from where the original report appears to have come and thus it's a worthwhile gain where we can have it. Any other places where folks might have noticed this. I will post upstream as well once I finish testing this patch. I'm posting this here to get some feedback as well to let anyone who is really really keen about trying this out have a go given I'm out tomorrow. ( I took a quick look at the short -> f32 case as well but the fact remains that loads either zero or sign extend anyway so there's probably not much gain in modelling that right away and the win really is in getting rid of that fp mul and the constant pool load. There's probably some gain in going from i64-> f64 as well so those patterns need to be written up at some point for completeness ) cheers Ramana 2011-10-04 Ramana Radhakrishnan <ramana.radhakrishnan(a)linaro.org> * config/arm/arm.c (vfp3_const_double_for_fract_bits): Define. * config/arm/arm-protos.h (vfp3_const_double_for_fract_bits): Declare. * config/arm/constraints.md ("Dt"): New constraint. * config/arm/predicates.md (const_double_vcvt_power_of_two_reciprocal): New. * config/arm/vfp.md (*arm_combine_vcvt_f32_s32): New. (*arm_combine_vcvt_f32_u32): New. For the following testcases I see the code as follows with -mfloat-abi=hard -mfpu=vfpv3 and -mcpu=cortex-a9 float foo (int i) { float v = (float)i / (1 << 11); return v; } float foa_unsigned (unsigned int i) { float v = (float)i / (1 << 5); return v; } After patch . foo: @ args = 0, pretend = 0, frame = 0 @ frame_needed = 0, uses_anonymous_args = 0 @ link register save eliminated. fmsr s0, r0 @ int vcvt.f32.s32 s0, s0, #11 bx lr .size foo, .-foo .align 2 .global foa_unsigned .type foa_unsigned, %function foa_unsigned: @ args = 0, pretend = 0, frame = 0 @ frame_needed = 0, uses_anonymous_args = 0 @ link register save eliminated. fmsr s0, r0 @ int vcvt.f32.u32 s0, s0, #5 bx lr .size foa_unsigned, .-foa_unsigned .align 2 .global foo1 .type foo1, %function rather than .type foo, %function foo: @ args = 0, pretend = 0, frame = 0 @ frame_needed = 0, uses_anonymous_args = 0 @ link register save eliminated. fmsr s15, r0 @ int fsitos s0, s15 flds s15, .L2 fmuls s0, s0, s15 bx lr .L3: .align 2 .L2: .word 973078528 .size foo, .-foo .align 2 .global foa_unsigned .type foa_unsigned, %function foa_unsigned: @ args = 0, pretend = 0, frame = 0 @ frame_needed = 0, uses_anonymous_args = 0 @ link register save eliminated. fmsr s15, r0 @ int fuitos s0, s15 flds s15, .L5 fmuls s0, s0, s15 bx lr .L6: .align 2 .L5: .word 1023410176

13 years, 8 months

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[ACTIVITY] 26th - 30th September

by Andrew Stubbs

* Vacation Monday, Tuesday, and Wednesday. * GCC Continued work on my constant reuse optimizations. Disappointingly, I've found that there are very few optimization opportunities in EEMBC (ARM/Thumb V7-A), although it's not difficult to write testcases that the optimization could improve. I also discovered that the data-flow chains don't work exactly how I thought (with respect to if-then-else cases) so I need to do a little more work. Pinged the native tuning patches; they're still waiting for upstream review. Still can't get the generic tuning work done as the CodeSourcery panda boards appear to be still offline.

13 years, 8 months

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[ACTIVITY] Weekly status

by Revital Eres

Committed to mainline the patch to support instructions with auto-inc operations in SMS after addressing Ayal's comments. The patch contains two parts; one of them fixes a bug revealed during bootstrapping with the patch and SMS flags. http://gcc.gnu.org/ml/gcc-patches/2011-09/msg01988.html http://gcc.gnu.org/ml/gcc-patches/2011-09/msg01987.html Looking at estimating register pressure with SMS: based on previous discussion with Richard the current approach is to try and use the register pressure estimation in loop invariant pass.

13 years, 8 months

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undefined reference to __aeabi_unwind_cpp_pr0

by AJ ONeal

I'm compiling an application built with TI's DVSDK 3 *[0]. /home/user/ti/dvsdk/dvsdk_3_01_00_10/linuxutils_2_25_02_08/packages/ti/sdo/linuxutils/cmem/lib/cmem.a470MV(cmem.o470MV):(.ARM.exidx+0x0): undefined reference to `__aeabi_unwind_cpp_pr0' arm-linux-gnueabi-gcc --version arm-linux-gnueabi-gcc (Ubuntu/Linaro 4.5.2-5ubuntu2~ppa1) 4.5.2 arm-linux-gnueabi-ld --version GNU ld (GNU Binutils for Ubuntu) 2.21.0.20110302 More full output is here (but it isn't particularly helpful due to TI's RTSC make system's black-magic) https://gist.github.com/925674 FYI: the MV in cmem.a470MV stands for MontaVista. This name is hard-coded somewhere even though it's not being linked against a MontaVista system. I believe the 470 means that it should work with ARMv4 through ARMv7, but I'm not positive. My googling suggest that this is a toolchain bug and that the best way around the issue is to create a file which defines the function as a void dummy and include it. http://www.codesourcery.com/archives/arm-gnu/msg03604.html http://comments.gmane.org/gmane.comp.boot-loaders.u-boot/78649 http://www.cs.fsu.edu/~baker/devices/lxr/http/ident?i=__aeabi_unwind_cpp_pr0 I have a script that I'll post shortly with instructions as to how to setup TI's DVSDK with Linaro AJ ONeal [0] I'm not using the latest DVSDK version 4 because the paths and such are so hard-coded for the 2009q3 version of codesourcery on ubuntu 10.04 LTS that I don't know where to start fixing it.

13 years, 8 months

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[ACTIVITY] Week ending 30th September 2011.

by Ramana Radhakrishnan

===Progress=== * Patch review week. * Looked at bootstrap issue for a while but Richard Sandiford picked it up and sorted it out (Thanks Richard). * Fun and games with some paperwork. * Some backporting and testing patches. (50099 and 50186) underway. === Plans === * Clear out some of the old patches (POST_MODIFY_DISP for vfp, BRANCH_COST ) and finish on auto-inc-dec patch from last week. * Away for 1 day next week. Meetings: * 1-1s * TCWG calls Absences. * 5th October -Out of Office. * 13th - 14th October - Internal training. * 31st Oct - 4th Nov - Linaro Summit Orlando. * 08 Nov - 11 Nov - Tentatively booked * Dec 19 - 31st Dec - Tentatively booked

13 years, 8 months

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