- linaro-toolchain - lists.linaro.org

[Weekly] 06-10 JAN 2014

by Michael Collison

== This week == - Completed local backportS of 201164, 201165, 201166, 201167, 201168. == Next week == - Complete backport of 201175 - Submit merge requestS using git == Future ==

12 years, 9 months

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[ACTIVITY] Week 1

by Will Newton

== Progress == * Two day week * Catching up on email etc. after break (0.5/10) * Investigate setjmp/longjmp SystemTap probe support in ARM glibc (1/10, TCWG-378) * Investigate toolchain bug reports for ARM and AArch64 (0.5/10) == Issues == * None == Plan == * Resume QEMU ARMv8 AArch32 work * Hopefully push glibc ARM pointer encryption fix for 2.19 -- Will Newton Toolchain Working Group, Linaro

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[ACTIVITY] 6-10 January 2014

by Christophe Lyon

- 2013.12 releases (1/10) * Sent announcements for 4.7 and 4.8 releases. - 2014.01 releases (2/10) * Created 4.7 and 4.8 branch merge requests (had handle some conflicts in 4.8) * Looked at backporting the crypto intrinsics support into 4.8, but there are dependencies with several other patches we haven't backported yet. - cross validation (4/10) * Restarted them since I had to stop them during the holidays. Still catching up with the backlog, should be OK during the week-end. * Analyzed and reported several regressions or new tests failing in some configurations. - Neon intrinsics tests (1/10) * Looked at Rob's neon-intrinsics branch and sent him some feedback. - misc (2/10): conf-calls and meetings. == Next == - 2014.01 releases - cross-validation: look at results and report regressions if any - resume libsanitizer work for AArch64

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[ACTIVITY] Week 01

by Renato Golin

== Progress == * Release 3.4 went out * Buildbots - Using powered USB hub for the external harddrive, but all boards fail one time or another... - Maybe it's the hard-drive type (mobile, power-saving), reverting to USB sticks for now - Leaving an odroid U2 running on USB stick for a week, used to work... - C++11 features will need GCC 4.7+, looking for an easy way to upgrade the Chromebooks * MCJIT - Finished work on remote MCJIT to re-enable the failing tests - http://llvm-reviews.chandlerc.com/D2527 * Pragma Vectorize - New discussions hint that my parser patch is moot, for now - Agreement is to use C++11 attributes for now, and add pragmas later - I can't continue implementing them, though... * Background - Huge number of patch reviews during holidays & this week - Good progress on new features for the IAS - More progress on EHABI, including IAS support * Time - CARD-862 8/10 - Others 2/10 == Plan == * Continue reviewing IAS features, maybe implement some * Work out how to create a libcxx bot * re-introduce llvm-chrome-01 as second self-host * Migrate all buildbots to GCC 4.7+ * Check out EHABI tests and assess progress

12 years, 9 months

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miscompilation of unsigned comparison on aarch64

by Michael Hudson-Doyle

Hi, I filed this on bugzilla: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59744 but I thought I'd mention it here too. This slightly strangely written program (it's distilled down from frame_offset_overflow in the gcc source itself) should print "bigger" if the first argument is bigger than 10 (or negative, but let's ignore that please): #include <stdlib.h> #include <stdio.h> int a[2] = { 10, 20 }; int is_bigger (long offset, int index) { unsigned long size = -offset; if (size > a[index]) { printf("bigger\n"); return 1; } return 0; } int main (int argc, char** argv) { long v; v = atol(argv[1]); is_bigger(-v, 0); return 0; } When compiled at -O1 or above (and with inlining disabled at -O2 and above), though, it bungles the 0 case: (t-doko)mwhudson@arm64:~$ gcc-4.9 -O3 test.c -o test -fno-inline -Wall (t-doko)mwhudson@arm64:~$ ./test 1 (t-doko)mwhudson@arm64:~$ ./test 11 bigger (t-doko)mwhudson@arm64:~$ ./test 0 bigger (t-doko)mwhudson@arm64:~$ gcc-4.9 -O0 test.c -o test -Wall (t-doko)mwhudson@arm64:~$ ./test 1 (t-doko)mwhudson@arm64:~$ ./test 11 bigger (t-doko)mwhudson@arm64:~$ ./test 0 (t-doko)mwhudson@arm64:~$ What's going on? Here's the disassembly of is_bigger (at O3): 0000000000400608 <is_bigger>: 400608: b0000082 adrp x2, 411000 <_GLOBAL_OFFSET_TABLE_+0x28> 40060c: 91010042 add x2, x2, #0x40 400610: a9bf7bfd stp x29, x30, [sp,#-16]! 400614: 52800003 mov w3, #0x0 // #0 400618: 910003fd mov x29, sp 40061c: b8a1d841 ldrsw x1, [x2,w1,sxtw #2] 400620: ab00003f cmn x1, x0 400624: 540000a2 b.cs 400638 <is_bigger+0x30> 400628: 90000000 adrp x0, 400000 <_init-0x3f8> 40062c: 911b6000 add x0, x0, #0x6d8 400630: 97ffff90 bl 400470 <puts@plt> 400634: 52800023 mov w3, #0x1 // #1 400638: 2a0303e0 mov w0, w3 40063c: a8c17bfd ldp x29, x30, [sp],#16 400640: d65f03c0 ret Basically it seems that the condition "-offset > val" is being compiled as "val + offset does not overflow", which is not valid for offset == 0. This seems to me to be the underlying cause behind https://bugs.launchpad.net/ubuntu/+source/gcc-4.8/+bug/1263806 ("gccgo fails to compile tomb.go on arm64"). Cheers, mwh

12 years, 9 months

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help on linaro android toolchain 13.12 (arm-v7)

by Sandeepa Prabhu

Hi, We are trying to build android Kitkat (for our own platform) using linaro android toolchain version 4.7.4 from 13.12 release. We are observing following while compiling some shared libraries: ~arm-linux-androideabi-4.7/bin/../libexec/gcc/arm-linux-androideabi/4.7.4/real-ld: warning: shared library text segment is not shareable ~arm-linux-androideabi-4.7/bin/../libexec/gcc/arm-linux-androideabi/4.7.4/real-ld: error: treating warnings as errors We tried to suppress thisn warning by setting LDFLAGS but the tool-chain does not seem to identify this flag: LOCAL_LDFLAGS := --no-warn-shared-textrel We need some help to fix this, so posting on both android and tool-chain mailing lists. Thanks, Sandeepa

12 years, 9 months

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LLVM and GCC working together

by Renato Golin

Hi folks, As most of you are on the GNU side of the fence, I believe this is the right crowd to first ask this question, before attempting a wider audience. For a while, Clang/LLVM wasn't in any position to add unheard-of features, and most of what we needed would be covered by something GCC already did. But in the last year or so, there were a number of "features" we'd like to add that aren't present in GCC (like pragmas, attributes, asm directives) which is neither part of the language specifications, nor something that another standard (like OpenMP or ABIs) already support. As a concrete example, we're trying to come up with some vectorisation annotation and there is a heated discussion on whether it should be C++11 attributes, pragmas, or changing the __attribute__ semantics to allow it to be used in lexical blocks, not just declarations. Any of that, but most strikingly the latter, would add Clang-specific behaviour which GCC probably won't implement, and we all know how that feels. In this discussion, and others regarding ARM-specific behaviour (notably about assembly directives), I have used the same argument twice already, so it's time to ask the GCC crowd once and for all: For non-standard, domain or platform specific changes, do we want to have a joint task force, GCC+LLVM, to homogenize the efforts in extending the languages we support in the same say, so that we can call it the "OSS Compiler Extensions" (or whatever) instead of two separate GCC-extensions and Clang-extensions? Historically, GCC has *a lot* more extensions, so this new standard would probably be 99% GCC, but the goals of such a task force for the future would be to: 1. Make sure all OSS compilers implement the same extensions, when they so chose. So, extensions to the language should go in a shared forum, and not to Clang/GCC lists. 2. Document each extension and record all discussions (threads, bugs, etc), so that new compilers can have an easier time implementing them. 3. Reason about the existing hazardous or redundant extensions, and mark them for deprecation. This is also pertinent to the Linux kernel, which is driving its own task force to compiler the kernel with Clang, so that it can rid itself from outdated GNU extensions that lingered for far too long in their code. I appreciate the size of this proposal, the political issues and the endless discussions, but this is the same on every standard committee, and I'd rather have something than nothing at all. Perhaps, as it happened before, some of these changes could be more easily persuaded to move back to the language standards and platforms ABIs, than if it's just implemented, undocumented, by one compiler. So, ignoring just for a moment the political side of it, would that make technical sense for the GCC community as well? cheers, --renato

12 years, 9 months

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Stable GCC

by Renato Golin

Folks, Since LLVM is moving on to C++11, I need to replace our buildbot GCCs with 4.7+ (the new minimum requirement), but I'd like to use whatever is the most stable and modern GCC version for native compilation. I could get the latest and greatest on our repository, but I know how compilers are written, and pardon me if I don't trust new releases... ;) Does any one have an opinion on which is the most stable, preferably 4.8, release of native ARMv7 GCC binaries? For some odd reason, we just release cross-compilers, so, in that case, where would I look for a native GCC, other than in my Ubuntu/Arch repositories? ARM? CodeSourcery? I *really* don't want to compile it myself... My lack of available fast ARM hardware is disturbing, and I don't want to spend a week cross-compiling GCC. cheers, --renato

12 years, 9 months

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[ANNOUNCE] Linaro GCC 4.8 and 4.7 2013.12 released

by Christophe Lyon

The Linaro Toolchain Working Group is pleased to announce the release of both Linaro GCC 4.8 and Linaro GCC 4.7. Linaro GCC 4.7 2013.12 is the twentiy first release in the 4.7 series. Based off the latest GCC 4.7.4+svn205768 release, this is the eighth release after entering maintenance. Interesting changes include: * Updates to GCC 4.7.4+svn205768 * Fixed MULTILIB_DEFAULTS in linux-eabi case. Linaro GCC 4.8 2013.12 is the ninth release in the 4.8 series. Based off the latest GCC 4.8.3+svn205577 release, it includes performance improvements and bug fixes. Interesting changes include: * Updates to GCC 4.8.3+svn205577 * AArch64: enable build of libjava and libatomic. Change frame growth direction, thus enabling libssp build. The source tarballs are available from: http://releases.linaro.org/13.12/components/toolchain/gcc-linaro/4.7 http://releases.linaro.org/13.12/components/toolchain/gcc-linaro/4.8 Downloads are available from the Linaro Releases website: http://www.linaro.org/downloads/ More information on the features and issues are available from the release pages: https://launchpad.net/gcc-linaro/4.7/4.7-2013.12 https://launchpad.net/gcc-linaro/4.8/4.8-2013.12 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

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[Activity] 30 DEC-03 Jan 2013

by Venkataramanan Kumar

== Progress == * Pointer mangling Aarch64 glibc. Worked on review comments from Maintainer. Rebased and posted the patch. Upstream completed and closed the card. https://cards.linaro.org/browse/TCWG-373 * Experimented with Cbuildv2 native building. == Plan == - Continue Cbuildv2. - Investigate PGO for Aarch64. == Issues == Waiting for feedback on libssp machine descriptions changes.

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[ACTIVITY] Week 01

by Zhenqiang Chen

== Issues == * None == Progress == * One day off (Jan. 1) * Do some basic validations for 2013.12 toolchain binaries release. * R/M Mac toolchain validation * Branch-cost related tuning for Cortex-M. == Plans == * Continue on branch-cost related tuning.

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[ACTIVITY] 30 December 2013 - 3rd January 2014

by Kugan

== Progress == - Short week (4 Days) - TCWG-291 zero/sign extension elimination 4/10 - made re-factoring and ran the regression - benchmarking in progress - TCWG-134 divmod 4/10 - converted into latest pass structure and re-based the patch - found some regression failures and fixed them - regression testing ongoing == Plan == - post divmod and vrp patches

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[ACTIVITY] 30 December 2013 - 3rd January 2014

by Omair Javaid

== Progress == * ARM Process Record: [TCWG-336] [TCWG-338] [TCWG-339][TCWG-317] [TCWG-315] - Configured and learnt to use git format-patch and git send-email. [1/10] - Incorporated and tested changes suggested by maintainers in previous arm process record patches. [2/10] - Created a new patch series indicating bug fixes separate from features. [1/10] - Submitted version 2 of arm process record replay improvements. * Debugging of stepping over and single stepping heurisitic code. [TCWG-315] [4/10] * Review of open JIRA cards and pending patches [1/10] * Time off for setting up new office space. [0.5/10] * Macau visa information gathering and document preparation [0.5/10] == Plan == * Reverse engineering stepping code heuristics in gdb to find a fix for reverse debugging of solib code on arm. [TCWG-315] * Find and submit a new fix for TCWG-267. * New office space setup and Macau visa application, will be away from my desk for few hours.

12 years, 9 months

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[ANNOUNCE] Linaro Toolchain Binaries 2013.12 released

by Bernhard Rosenkränzer

Just before having to rename it to 2014, the Linaro Toolchain and Builds and Baselines Working Groups are pleased to announce the 2013.12 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 4.8 2013.12 * Linaro GDB 7.6.1 2013.12 * Linaro Binutils 2.24 2013.12 * 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. Interesting changes include: * Binutils has been updated to 2.24, bringing many improvements * Various bugs have been fixed 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://releases.linaro.org/13.10/components/toolchain/binaries/ 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.

12 years, 9 months

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[Activity] 23-27 DEC 2013

by Venkataramanan Kumar

== Progress == * Pointer mangling Aarch64 glibc. Posted patch on pointer mangling. Worked on review comments from maintainer. Tested on V8 foundation model. == Plan == - Continue working on review comments for Pointer Guard support in Aarch64 glibc, - Continue Cbuildv2. - Investigate PGO for Aarch64. == Issues == Waiting for feedback on libssp machine descriptions changes.

12 years, 9 months

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[ACTIVITY] Week 52

by Zhenqiang Chen

== Issues == * None == Progress == * One day off (Dec. 27). * Prepare toolchain binaries release - Backport the newlib patches for ftruncate() and truncate() stubs - Test and update binutils version to linaro-2.24-2013.12 and workaround gold compile fail issue. * Retest -fira-loop-pressure performance on cortex-m4. But get regression in several suites of eembc-v1. Will re-investigate it when aarch64 performance test is ready since it is enabled in ia64 and rs6000, and the comment says: /* Numerous experiment shows that IRA based loop pressure calculation works better for RTL loop invariant motion on targets with enough (>= 32) registers. It is an expensive optimization. So it is on only for peak performance. */ * R/M toolchain related work. == Plan == * Linaro toolchain binaries 2013.12 release

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[ACTIVITY] 23 - 27 December 2013

by Kugan

== Progress == - Short week (25th and 26th public holidays) - Integrate benchmarking into Cbuildv2 (TCWG-360 4/10) - First cut implementation complete and ready for review - Binutils Bug 16340 (2/10) - Posted modified patch after regression testing and analysing the results == Plan == - ping modified zero/sign extension patch with benchmarking - set-up trunk daily regression testing - start TCWG-238

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[ACTIVITY] 23 - 27 December 2013

by Omair Javaid

== Progress == * ARM Process Record made the changes pointed out in maintainers comments. [3/10] [TCWG-336] [TCWG-338] [TCWG-339] - Put the new bug fixes patches on hold as they can be sent in the same series.[TCWG-317] [TCWG-315] * Time off for setting up new office space. [4/10] - Found a good room for office in a central location, need to get internet and other stuff working before shifting. I will get started on that once I get the possession of the space next week. * Time off for Macau visa information [1/10] * 25th December Public Holiday [2/10] == Plan == * ARM Process Record: - Create new patches as per maintainers suggestions, incorporating bug fixes as separate patches in the list. - Test and send all patches upstream. * New office space setup, will be away from my desk for few hours.

12 years, 9 months

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bad code generation on aarch64 in aarch64_output_mi_thunk

by Matthias Klose

Hi, seen in a segfault running the tests in the coinor-osi package, https://launchpad.net/bugs/1263576, both in saucy and trusty, version 0.106.4 and 0.106.5. Version 0.103 doesn't show the issue. both the 4.7 and 4.8 linaro branches show this behaviour, and trunk 20131121 (didn't build a newer one yet). William Grant tracked that down to a bug with very negative vcall_offsets in aarch64 multiple inheritance thunks. The example below has two consecutive thunks, with the second adding 263 instead of subtracting 264. aarch64_build_constant seems to not handle negative integers. He tried a quick gcc patch to avoid using aarch64_build_constant, and the coinor-osi tests succeed. 0000000000401ca4 <_ZTv0_n256_N1C2adEv>: 401ca4: f9400010 ldr x16, [x0] 401ca8: f8500211 ldr x17, [x16,#-256] 401cac: 8b110000 add x0, x0, x17 401cb0: 17fffff9 b 401c94 <_ZN1C2adEv> [...] 0000000000401cc4 <_ZTv0_n264_N1C2aeEv>: 401cc4: f9400010 ldr x16, [x0] 401cc8: d28020f1 mov x17, #0x107 // #263 401ccc: f8716a11 ldr x17, [x16,x17] 401cd0: 8b110000 add x0, x0, x17 401cd4: 17fffff8 b 401cb4 <_ZN1C2aeEv> Any chance for a quick 2013 review? Thanks, Matthias --- a/gcc/config/aarch64/aarch64.c +++ b/gcc/config/aarch64/aarch64.c @@ -2540,8 +2540,8 @@ addr = plus_constant (Pmode, temp0, vcall_offset); else { - aarch64_build_constant (IP1_REGNUM, vcall_offset); - addr = gen_rtx_PLUS (Pmode, temp0, temp1); + aarch64_add_constant (IP0_REGNUM, IP1_REGNUM, vcall_offset); + addr = temp0; } aarch64_emit_move (temp1, gen_rtx_MEM (Pmode,addr));

12 years, 9 months

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[Activity] Dec 16-26

by Rob Savoye

== Progress == * Lots of little changes to the Jenkins configure files and Cbuildv2 so Jenkins can do a builds in a 32 bit chroot. (4/10) * Misc - meetings and misc tasks (2/10). * Helped with binutils & GCC releases. 4/10) * New Arndale Octa arrived. == Plan == * Get back to adding the neon intrinsics tests to the GCC testsuite. * More Jenkins hacking for 32bit chroot builds. * More hacking on binary release automation. * Review Kugan's benchmarking support in Cbuildv2. == Issues == * Loosing ssh access to many of the machines we work on is a problem... == Leave == * A bit complicated. On the road till Jan 13, offline some, mixed with some work days depending on the weather. Should have email access most nights.

12 years, 9 months

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Binutils fails to build

by Venkataramanan Kumar

Hi All, I am getting a weird error while building binutils from http://cbuild.validation.linaro.org/snapshots/Latest/binutils-linaro-2.23.2… GCC version gcc version 4.8.1 (Ubuntu/Linaro 4.8.1-10ubuntu9) Ubuntu 13.10 Steps: 1) /work/sources/binutils/configure --target=aarch64-unknown-linux-gnu --prefix=/work/builds/gcc-fsf-trunk/tools --with-sysroot=/work/builds/gcc-fsf-trunk/sysroot-aarch64-unknown-linux-gnu 2) make (Snip) gcc -c -DHAVE_CONFIG_H -g -O2 -I. -I/work/sources/binutils/libiberty/../include -W -Wall -Wwrite-strings -Wc++-compat -Wstrict-prototypes -pedantic /work/sources/binutils/libiberty/regex.c -o regex.o In file included from /work/sources/binutils/libiberty/regex.c:128:0: /usr/include/stdlib.h:510:35: error: expected ‘,’ or ‘;’ before ‘__attribute_alloc_size__’ __THROW __attribute_malloc__ __attribute_alloc_size__ ((2)) __wur; ^ make[2]: *** [regex.o] Error 1 make[2]: Leaving directory `/work/builds/gcc-fsf-trunk/obj-aarch64-unknown-linux-gnu/binutils/libiberty' (Snip) Can anyone point me what is going wrong here. regards, Venkat,

12 years, 9 months

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[ANNOUNCE] Linaro binutils 2.24 2013.12 released

by Victor Chong

### About Linaro binutils Linaro binutils is a release of the GNU binutils with bug fixes and enhancements for ARM platforms. GNU binutils is a collection of tools including the ld linker and as assembler. ### Linaro binutils 2.24 2013.12 The Linaro Toolchain Working Group is pleased to announce the 2013.12 release of Linaro binutils 2.24. This release is based on the latest GNU binutils 2.24 stable branch, but with additional features and bug fixes. ### Additional Features * Support for GNU indirect functions ### Bug Fixes * Fixed miscalculation of GOTPLT offset for ifunc syms * Handle static links with ifunc correctly * Fixup IFUNC tests to work on all targets ### Source ### Release Tarball * https://releases.linaro.org/13.12/components/toolchain/binutils-linaro ### Development Tree * git://git.linaro.org/toolchain/binutils-gdb.git This release was built from the linaro_binutils-2_24-2013_12_release tag. ### 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` * Questions? [ask Linaro](http://ask.linaro.org/). * Interested in commercial support? inquire at [Linaro support](mailto:support@linaro.org)

12 years, 9 months

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[ACTIVITY] Week 51

by Yvan Roux

== Issues == * none == Progress == * LRA on AArch32: o TCWG-343 : Make LRA the default for the ARM backend (8/10) - Validated and committed a fix from Vladimir for Thumb1 issues. - iWMMXT issue : Tried a fix without success, continue working on it. o TCWG-345 : Analyse performance of LRA for ARM. (0/10) - No progress this week. * Various meetings. (2/10) == Next == * Vacation

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[ACTIVITY] 16 - 19 December 2013

by Omair Javaid

== Progress == * Debugged and Fixed process record memory corruption problem. [TCWG-315][TCWG-317][8/10] * Sick Time off [2/10] == Plan == * Send patches for bug fixes and look into remaining arm-native gdb issues. * Respond to maintainer's suggestion on process record patches. * Public Holiday on 25th * Time off for setting up new office space.

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[Activity] 16-19 DEC 2013

by Venkataramanan Kumar

== Progress == * Libssp GCC patch Replied to Marcus comments on libssp machine description support for stack protect and test. Analyzed other ports implementations on clearing register that loaded canary value. Waiting for his feedback. * Pointer mangling Aarch64 glibc. Investigated mangling support and implemented a patch. Testing glibc test suites in V8 Foundation model is in progress. * Attend Linaro Tool chain status meeting. * Attend 1-1 with Christophe (Linaro). * Attend 1-1 with Matt (Linaro) . == Plan == - Pointer Guard support in Aarch64 glibc - Continue tesing Cbuildv2

12 years, 9 months

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[ACTIVITY] Week 51

by Zhenqiang Chen

== Issues == * None. == Progress == * Rebase aarch64 build scripts to crosstool-ng upstream, test and send out the patch for community review (2/10). * Investigate https://ci.linaro.org/jenkins/job/openembedded-armv8b-rootfs/gcc_version=4.…. It seams build configure issue. Some MICRO is not correctly defined. Can not follow-up it due to no access to the build system. * Continue on "uninit warning testsuite failures" (CARD 304 7/10) - Identify another reason why uninit-pred-8_b.c FAIL: The control flow is too complex, it can not normalize the condition at line 22 to ( n < 10 || m > 100 || r < 10 ). - Work on patch to fix PHI issue to make uninit-pred-9_b.c PASS. * Test builds for backporting "ftruncate() and truncate() stubs" related patches in Linaro newlib. == Plan == * Linaro toolchain binaries 2013.12 release.

12 years, 9 months

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[ACTIVITY] 16-20 December 2013

by Kugan

== Progress == - Integrate benchmarking into Cbuildv2 (TCWG-360 7/10) - Implementation mostly complete - Started testing to ensure compatible with cbuild1 - Code available for comments at https://git.linaro.org/toolchain/cbuild2.git/shortlog/refs/heads/benchmarki… - Binutils Bug 16340 (1/10) - Posted the patch after regression testing and analysing the results - Mics (2/10) - Read relocation handling of tls and its implementation for aarch64 == Plan == - Complete Integrate benchmarking into Cbuildv2 - Address comments for Binutils Bug 16340 and look to come up with a simple testcase

12 years, 9 months

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[ACTIVITY] Week 51

by Renato Golin

== Progress == * Android LLVM - Discussions on progress, trying to line up kernel+AOSP together - Google has bailed Clang/LLVM for L release, will consider for next one * Vectorizer - Progressing on the implementation of the pragma parser - http://llvm.org/PR18086 - Discussions about introduction of generic function vectorizer (ARM) * Release 3.4 - Tested RC3, no regressions on tests or benchmarks - http://people.linaro.org/~rengolin/llvm/ - http://llvm.org/pre-releases/3.4/rc3/ - Looked at a bug on the vectorizer for pentium3/freebsd - Work around found, not easy enough to get them to RC4 * Background - Many discussions, many support requests, many patch reviews - Adding BOF notes to dev meeting site - Booking train and hotel for FOSDEM 14 * Time - CARD-862 8/10 - Others 2/10 * Happy Holidays! And see you in January! == Issues == * Running benchmarks on my Chromebook is very unstable. - Even though the standard deviation is small in two different moments, the two results are statistically incompatible. - The wireless network on the Chromebook, as widely known, is unstable and unpredictable. - I need a graphical interface, so I can do stuff during Connects, or to see Phoronix results and that is probably the responsible for all instability - Next release, I'll use an ODroid (or Arndale) for benchmarks == Plan == * Holidays!

12 years, 9 months

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[ACTIVITY] 16-20 December 2013

by Christophe Lyon

== Progress == - 2013.12 releases (4/10) * Handover to Michael * Committed remaining backports/branch merges * Unexpected regression in 4.7 branch narrowed to a linker bug, now fixed. - cross validations (2/10) * stabilized armeb+qemu validations - misc (4/10): misc conf-calls and meetings; internal meetings == Next == Next 2 weeks off (Dec 23rd Jan 3rd) Merry Christmas and happy new year to all of you.

12 years, 9 months

1
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ARM vs THUMB builds

by Parimala Baggiri

Hello, I am using the pre-built toolchain gcc-arm-none-eabi-4_6-2012q2 from linaro to compile u-boot (u-boot-linaro-stable) and to compile my standalone applications to run on target(PandaBoard ES rev b2) hello_world standalone application which comes with u-boot is executing fine on target when I disable CONFIG_SYS_THUMB_BUILD, but when I enable it, target gets reset with following information Panda # go 82000000 hello ## Starting application at 0x82000000 ... undefined instruction pc : [<8200000c>] lr : [<bff83147>] sp : bfeffe40 ip : bfeffc10 fp : 00000000 r10: 00000003 r9 : bffac954 r8 : bfefff68 r7 : bff01d88 r6 : 82000000 r5 : bff01d8c r4 : 00000003 r3 : 82000000 r2 : bff01d8c r1 : bff01d8c r0 : 00000002 Flags: nzCv IRQs off FIQs off Mode SVC_32 Resetting CPU ... resetting ... U-Boot SPL 2013.01.-rc1-g0f45941 (Dec 17 2013 - 14:23:41) OMAP4460 <http://www.ti.com/product/OMAP4460> ES1.1 OMAP SD/MMC: 0 reading u-boot.img reading u-boot.bin reading u-boot.bin ...... Can anyone please help me why thumb mode build is failing?

12 years, 9 months

3
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Re: MMU Off / Strict Alignment

by Richard Earnshaw

On 18/12/13 05:06, Jonathan S. Shapiro wrote: > At the risk of sticking my nose in, this isn't a startup code issue. > It's a contract issue. > > First, I don't buy Richard's argument about memcpy() startup costs and > hard-to-predict branches. We do those tests on essentially every > *other* RISC platform without complaint, and it's very easy to order > those branches so that the currently efficient cases run well. Perhaps > more to the point, I haven't seen anybody put forward quantitative > data that using the MMU for unaligned references is any better than > executing those branches. Speaking as a recovering processor > architect, that assumption needs to be validated quantitatively. My > guess is that the branches are faster if properly arranged. > > Second, this is a contract issue. If newlib intends to support > embedded platforms, then it needs to implement algorithms that are > functionally correct without relying on an MMU. By all means use > simpler or smarter algorithms when an MMU can be assumed to be > available in a given configuration, but provide an algorithm that is > functionally correct when no MMU is available. "Good overall > performance in memcpy" is a fine thing, but it is subject to the > requirement of meeting functional specifications. As Jochen Liedtke > famously put it (read this in a heavy German accent): "Fast, ya. But > correct? (shrug) Eh!" > > So: we need a normative statement saying what the contract is. The > rest of the answer will fall out from that. > > I do agree with Richard that startup code is special. I've built > deeply embedded runtimes of one form or another for 25 years now, and > I have yet to see a system where optimizing a simplistic byte-wise > memcpy during bootstrap would have made any difference in anything > overall. That said, if the specification of memcpy requires it to > handle incompatibly aligned pointers (and it does), and the contract > for newlib requires it to operate in MMU-less scenarios in a given > configuration (which, at least in some cases, it does), it's > completely legitimate to expect that bootstrap code can call memcpy() > and expect behavior that meets specifications. > > So what's the contract? > I disagree with your assertion that newlib *requires* it to operate in an MMU-less scenario for all targets; it only does so when the target can reasonably be expected to not have an MMU. The only contract that exists is the one written in the C standard: 7.23.2.1#2 The memcpy function copies n characters from the object pointed to by s2 into the object pointed to by s1. If copying takes place between objects that overlap, the behavior is undefined. But that is written on the assumption that we're in a normal execution environment, not in some special case. What you're missing is that AArch64 is (in ARM ARM terms) an A-profile only environment where an MMU is mandated in the system. Furthermore, processors implementing the architecture will *expect* that the MMU be turned on as soon as possible after boot, since without this the caches cannot be used and without those the performance will be truly horrible. Once the caches are enabled, it's perfectly reasonable to assume that memcpy will only be used for copies to and from NORMAL memory, since other types of memory have potential side effects, which means that use of memcpy would be unsafe. If you want to write an MMU-less memcpy, then feel free to write one; but please install it with a different interface -- something like __memcpy_nommu(). Don't penalise the standard case for the non-standard exceptional one. R.

12 years, 9 months

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segfault using __thread variable

by Michael Hudson-Doyle

Hi all, I have a bit of a strange one. I'm not after a full solution, just any hints that quickly come to mind :) After a few simple patches I have a build of mongodb for aarch64 (built with gcc-4.8). However, all of the test binaries that the build spits out immediately segfault. gdb-ing shows that they segfault inside this macro: TSP_DECLARE(OwnedOstreamVector, threadOstreamCache); This expands to: # define TSP_DECLARE(T,p) \ extern __thread T* _ ## p; \ template<> inline T* TSP<T>::get() const { return _ ## p; } \ extern TSP<T> p; And indeed, it's mongo::TSP<mongo::OwnedPointerVector<...> >::get() const that we're segfaulting in. This is the disassembly of this function (at -O0) with the faulting instruction marked: 0x00000000004b4b6c <+0>: stp x29, x30, [sp,#-32]! 0x00000000004b4b70 <+4>: mov x29, sp 0x00000000004b4b74 <+8>: str x0, [x29,#16] 0x00000000004b4b78 <+12>: adrp x0, 0x64c000 0x00000000004b4b7c <+16>: ldr x0, [x0,#776] 0x00000000004b4b80 <+20>: nop 0x00000000004b4b84 <+24>: nop 0x00000000004b4b88 <+28>: mrs x1, tpidr_el0 0x00000000004b4b8c <+32>: add x0, x1, x0 => 0x00000000004b4b90 <+36>: ldr x0, [x0] 0x00000000004b4b94 <+40>: ldp x29, x30, [sp],#32 0x00000000004b4b98 <+44>: ret And the registers: (gdb) info registers x0 0x7fb863fd70 548554407280 x1 0x7fb7ff76f0 548547819248 x2 0x0 0 x3 0x7fb7fc11b8 548547596728 x4 0x1 1 x5 0x0 0 x6 0x50 80 x7 0x0 0 x8 0x0 0 x9 0x6165727473676f4c 7018141438804717388 x10 0x0 0 x11 0x0 0 x12 0x2 2 x13 0x10 16 x14 0x0 0 x15 0x7fb7e5e590 548546143632 x16 0x64b3d8 6599640 x17 0x7fb7f667d0 548547225552 x18 0x7fffffdab0 549755804336 x19 0x7fffffed50 549755809104 x20 0xb 11 x21 0xb 11 x22 0x6500b0 6619312 x23 0x650070 6619248 x24 0x7fffffff 2147483647 x25 0x64db40 6609728 x26 0x7fffffeda0 549755809184 x27 0x653d00 6634752 x28 0x7fffffe750 549755807568 x29 0x7fffffe4d0 549755806928 x30 0x4b4ed4 4935380 sp 0x7fffffe4d0 0x7fffffe4d0 pc 0x4b4b90 0x4b4b90 <mongo::TSP<mongo::OwnedPointerVector<std::basic_ostringstream<char, std::char_traits<char>, std::allocator<char> > > >::get() const+36> cpsr 0x20000000 536870912 fpsr 0x0 0 fpcr 0x0 0 If I recompile this object file without -fPIC, it works. I guess I see three things that could be wrong: 1) The operand to "adrp x0, 0x64c000"[1] 2) The operand to "ldr x0, [x0,#776]" 3) The value of tpidr_el0 Oh, and I guess: 4) The setup of tls has gone wrong and the address in x0 _ought_ to be accessible but isn't for some reason. Any hints on which of these seems mostly likely to be the culprit? Chers, mwh [1] FWIW, objdump reports 0x64c000 as "_GLOBAL_OFFSET_TABLE_+0x2d0", not sure why that doesn't show up in gdb's disassembly).

12 years, 9 months

5
20
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[ACTIVITY] Week 51

by Will Newton

== Progress == * Bugfixing and testing QEMU AArch64 FP patches (3/10, VIRT-183) * Debugging and submitting a patch for ARM gdb ifunc test failures (1/10) * Two day week due to holidays == Issues == * None == Plan == * Back on the 9th January, have a good Christmas and New Year everybody! -- Will Newton Toolchain Working Group, Linaro

12 years, 9 months

1
0
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MMU Off / Strict Alignment

by Christopher Covington

Hi, We've noticed an issue trying to use the Linaro AArch64 binary bare metal toolchain release with the MMU turned off for some low-level tests. Anytime puts, sprintf, etc. gets called, a reent structure gets created with references to STDIN, STDOUT, STDERR FILE types. A member in the __sFile struct, _mbstate, is an 8 byte struct, but is not aligned on an 8 byte boundary. This means that when memset (or a similar function) gets called on this struct, and doesn't operate one byte at a time, a data alignment fault will be generated when operating out of device memory, such as on a system where the MMU has not yet been turned on yet. I'm still examining possible fixes (I'll probably look at building with -mstrict-align first), but I wanted to check if anyone had thoughts on the subject and if Newlib upstream or Linaro consider using Newlib with the MMU turned off to be a valid use case or if running the code that turns on the MMU is considered a prerequisite to everything else. Thanks, Christopher -- Employee of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by the Linux Foundation.

12 years, 9 months

3
3
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[ACTIVITY] Week 50

by Charles Baylis

== Progress == TCWG-293 (9/10) - wrote and tested 64bit division code - it seems to work - still need to do performance testing TCWG-347 Fix PR59142 (1/10) - split into series of 3 patches - patch almost ready, was held up by non-availability of the lab - need to bootstrap on Thumb-1 to prove change made in response to review comments TCWG-346 AArch64 Benchmarking: CoreMark & Dhrystone - no significant progress, no access to the lab == Next == Pick up aarch64 benchmarking when the board becomes accessible again Submit PR59142

12 years, 9 months

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[ACTIVITY] 9-13 December 2013

by Christophe Lyon

== Progress == - 2013.12 releases (4/10): * stalled due to lab unavailability. * A couple of backports are waiting for approval, another one is being debugged. - cross-validation (4/10): fixed arneb+qemu validations. - misc (2/10): misc conf-calls and meetings == Next == - Make 2013.12 releases - cbuild2: continue testing, try to make 4.7 source release - libsanitizer on AArch64: resume work == Future == Next 2 weeks off (Dec 23rd-Jan 3rd)

12 years, 9 months

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[ACTIVITY] Week 50

by Yvan Roux

== Issues == * 1.5 day of due to car issue. (3/10) * Calxedas are down after lab maintenance. == Progress == * LRA on AArch32: o TCWG-343 : Make LRA the default for the ARM backend (5/10) - Turn LRA on by default committed as rev205887 http://gcc.gnu.org/ml/gcc-patches/2013-12/msg01088.html - New Thumb regressions reported (Cortex-m0 and bootstrap), analysis ongoing. - Analysed last week regressions and reported them upstream, Vladimir fixed them at rev205974. - iWMMXT issue : work ongoing. o TCWG-345 : Analyse performance of LRA for ARM. (0/10) - No progress this week. * Reviewed some merge requests. (1/10) * Various meetings. (1/10) == Next == * Continue LRA, merge and patch reviews.

12 years, 9 months

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[ACTIVITY] 9 - 13 December 2013

by Omair Javaid

== Progress == * Debugging and analysis of various gdb test suite failures [TCWG-34] [5/10] Updated googledoc sheet with action items and comments on different failures. Investigated remote core file generation issues. Prepared a patch to turn off corefile dependent tests in remote configs. * Debugged gdb.reverse testsuite failures [TCWG-197] [4/10] Found a memory corruption issue where execution log is being corrupted in memory. * Time off for dentist appointment and office relocation stuff [1/10] == Plan == * Figure out a reason and fix for process record memory corruption problem. * Further analysis of test suite failures in arm-native Vs x86-native and arm-remote Vs x86-remote test results. * Send patch to disable corefile tests in remote mode. Ping process record and other previous patches.

12 years, 9 months

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[Activity] 09-13 DEC 2013

by Venkataramanan Kumar

== Progress == - Libssp GCC (4/10) - Rebased GCC source and added patch for stack protect and test based on global stack guard. Discussing with Marcus on generic stack protect set and test versus machine descriptions. Discussed with ARM and Glibc Maintainers, Dropped my patches for TLS based stack guard. - Cbuildv2 experiments (3/10) - Built cross compiler with Cbuilv2. - Discussing with Ryan on building tool chain without cbuild.validation.linaro.org dependency - PGO support for aarch64 (1/10) Read a paper on PGO optimization in GCC - Cross build some benchmarks(2/10). There were omp.h file missing errors when Linaro tool chain was used. The issue is the tool chain is not built with libgomp library. Rebuilt the tool chain after checkign configuration changes with Zhenqiang Chen . == Plan == - Inverstigate Pointer Guard support in Aarch64 glibc - Continue tesing Cbuildv2 - Continue PGO investigations

12 years, 9 months

1
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[Weekly] 09-13 DEC 2013

by Kugan

== Progress == - aarch64 bootstrapping (TCWG-348 4/10) - patch committed and card closed - http://gcc.gnu.org/viewcvs/gcc?view=revision&revision=205891 - Integrate benchmarking into Cbuildv2 (TCWG-360 6/10) - Adding missing functionality == Plan == - Continue with Integrate benchmarking into Cbuildv2

12 years, 9 months

1
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[ACTIVITY] Week 50

by Zhenqiang Chen

== Issues == * None. == Progress == * Enable libomp for aarch64*-linux-gnu builds in Linaro crosstool-ng. * Backporting r200103 and r205509 to Linaro 4.8. * Try to enable lra and test Spec2k with -fno-move-loop-invariants and -fira-loop-pressure. But still no overall performance improvement. (2/10) * Try conditional compare related changes (CARD 313: 3/10) - Set LOGICAL_NON_SHORT_CIRCUIT to false in fold-const.c. - Do ifcombine twice. - Logs show lots of new FAILs in vrp related cases and no performance improvement in Spec2k INT. * Identified the root causes of "uninit warning testsuite failures" (CARD 304: 3/10) - Some values are from PHI, which is not handled when checking subset. - Function is_included_in is conservative. Here is its comments: /* ... It returns false if ONE_PRED's domain is not a subset of any of the sub-domains of PREDS ( corresponding to each individual chains in it), even though it may be still be a subset of whole domain of PREDS which is the union (ORed) of all its subdomains. In other words, the result is conservative. */ == Plans == * 2013.12 toolchain binaries release. * Continue on CARD 313 and 304.

12 years, 9 months

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[ACTIVITY] Week 50 (Dec 9 - Dec 13)

by Ryan Arnold

== Progress == (4/10) * TCWG-372 fix Cbuildv2 parsing to handle the new binutils-gdb repository (4/10) - Completed Card with following commits. commit e6e39f5d1f7963332b3d7dd2e4400de91847219c Author: Ryan S. Arnold <ryan.arnold(a)linaro.org> Date: Tue Dec 10 16:08:17 2013 -0600 Correct get_toolname to work with unified repo: binutils-gdb.git Secondary fixes required: - Set config/binutils.conf and config/gdb.conf to use unified repo binutils-gdb.git. - Re-enable binutils-gdb.git in config/sources.conf. - get_toolname now calls get_git_tool and determines the actual toolname for binutils and gdb from the branch name if the repository is unified. - Made all other usages of get_git_tool use get_toolname instead. - checkout() now uses ${repo} as returned from get_git_repo as the git repository instead of ${tool}.git. This allows a unified repository to only be checked out once. - The git parser now determines whether an http:// in a url means a git service or an svn service. - The git parser now returns branch names for launchpad urls with branches in the url. - The git parser now returns the tool name properly for an svn service. - The git parser testsuite now has testcases for all new additions. Also - Added --snapshots functionality to allow specifying an existing snapshots directory. - Add testcases to test.sh to test --snapshots functionality. - Changes test.sh --snapshots directive to --md5sums to avoid confusion with cbuild2.sh --snapshots. * TCWG-323 Interface hardening (5/10) - Card in progress with following commits: commit cc7193d8ddb86c4ed7d16086f8ee968ae4bae87f Author: Ryan S. Arnold <ryan.arnold(a)linaro.org> Date: Thu Dec 12 11:40:00 2013 -0600 cbuild2.sh: All error exit paths should use build_failure(). commit 2a4ec7fa0b7c48e0c6e05a7549f64e3336022f45 Author: Ryan S. Arnold <ryan.arnold(a)linaro.org> Date: Wed Dec 11 14:08:51 2013 -0600 cbuild2.sh: Added check_directive() to unify bounds checking. Also added accompanying top-level test.sh fragments to test check_directive. Change-Id: Ia42a4b241a5ca62d41dccf1d8e023980ad0a04d0 commit c9ec21200260bdb26d9fe9b26d7ce390579a0ca2 Author: Ryan S. Arnold <ryan.arnold(a)linaro.org> Date: Wed Dec 11 13:07:15 2013 -0600 test.sh: Fixed to work with a temporary host.conf file. Require change due to commit 3b5c576630a8ac08cd3b9ab9eab781308549a858 which requires a host.conf file for finding the cbuild topdir. Change-Id: I991bb5f2a7949267bf69fba093d6becd202ad138 commit 16a45027be798b06160916234713f5dc35b2ecbb Author: Ryan S. Arnold <ryan.arnold(a)linaro.org> Date: Tue Dec 10 18:16:09 2013 -0600 cbuild2.sh: Bounds check --set input. Change-Id: I8ebffd1809b17962aef58f2a08277d5f639d7e3e commit d7ee602c24231e24457c93208f749cbdd0357115 Author: Ryan S. Arnold <ryan.arnold(a)linaro.org> Date: Tue Dec 10 18:03:04 2013 -0600 cbuild2.sh: Remove --srcdir. It didn't do anything. Change-Id: I5b99c7ae8dc542cb62516104bd0bf9d1888afc52 commit 53e9c74966442c41cc9512f27f46ef849d62bcc8 Author: Ryan S. Arnold <ryan.arnold(a)linaro.org> Date: Tue Dec 10 17:58:54 2013 -0600 cbuild2.sh: Remove --dispatch support. It didn't do anything. commit 289ade38f100872653218da4792fbb1650d3b231 Author: Ryan S. Arnold <ryan.arnold(a)linaro.org> Date: Wed Dec 11 10:27:37 2013 -0600 cbuild2.sh: Bounds check --release switch. Change-Id: I90804ea02b995d476b148fb68db955d164bc674c commit 9bae259ebbff193e29899edf8a47190747d2bc1b Author: Ryan S. Arnold <ryan.arnold(a)linaro.org> Date: Wed Dec 11 10:09:00 2013 -0600 lib/configure.sh: Add missing closing " Change-Id: I9eee9a934a6cbb60bd1e2db6b0af9faf19fa5188 commit 16a45027be798b06160916234713f5dc35b2ecbb Author: Ryan S. Arnold <ryan.arnold(a)linaro.org> Date: Tue Dec 10 18:16:09 2013 -0600 cbuild2.sh: Bounds check --set input. Change-Id: I8ebffd1809b17962aef58f2a08277d5f639d7e3e commit d7ee602c24231e24457c93208f749cbdd0357115 Author: Ryan S. Arnold <ryan.arnold(a)linaro.org> Date: Tue Dec 10 18:03:04 2013 -0600 cbuild2.sh: Remove --srcdir. It didn't do anything. Change-Id: I5b99c7ae8dc542cb62516104bd0bf9d1888afc52 commit 53e9c74966442c41cc9512f27f46ef849d62bcc8 Author: Ryan S. Arnold <ryan.arnold(a)linaro.org> Date: Tue Dec 10 17:58:54 2013 -0600 cbuild2.sh: Remove --dispatch support. It didn't do anything. Change-Id: I4b6ee8db0d3e74510b95c816469b0c100207972f * Misc (1/10) - Now using gerrit with git review for handling cbuildv2 development. - Reviewed V Chong's proposed outline for toolchain documentation and made suggestions and edits. == Plan == * Move onto working primarily on glibc Jira cards. == Issues == * Lab migration took cbuild.validation.linaro.org down for several unplanned days and therefore toolchain sources were unavailable during that time. I made do by adding some features into cbuildv2 to use alternative snapshots directories.

12 years, 9 months

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[Weekly] 09-13 DEC 2013

by Michael Collison

== This week == - Completed backport of 202259, 202407, 202020, 201261 and 201263 - Submitted merge requesSt for completed backports == Next week == - Begin work on other assigned backports == Future == Document missing features of cbuild for backports

12 years, 9 months

1
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[ACTIVITY] Week 50

by Renato Golin

== Progress == * Pragma Vectorize - Comparing pragma OMP to mimic for vectorize - Implementing the lexer/parser - http://llvm.org/PR18086 * Android LLVM - Wasting time for the last time with Odroid XU and Android - Will focus on Nexus 4, 5 and 7 * Integrated AS - Changed to enabled by default - Discussing some bugs found on Android unwind library (inline asm) - http://llvm.org/PR18231 * Release 3.4 - There were some muddled merges, folks are trying to fix - Bero found a serious bug, seems to be result of the bad merge - http://llvm.org/PR18201 - Tested RC2, waiting for RC3 * Background - Discussions, lots of patch reviews * Time - CARD-862 8/10 - Others 2/10 == Plan == * Continue implementing pragma vectorize in Clang * Wait for the next release candidate, test, benchmark * Follow up in the IAS issues raised * If RemoteChild is gone by then, continue the MCJIT refactoring * Have a look at TableGen users == Issues == I saw a black cat, under a ladder, with a hockey mask...

12 years, 9 months

1
0
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[ACTIVITY] Week 50

by Will Newton

== Progress == * Bugfixing and testing QEMU AArch64 FP patches (7/10, VIRT-183) * Debugging and submitting a patch for issue with Ruby and ARM pointer encryption (2/10) * Other miscellaneous work: glibc patch review, binutils testsuite patch, expenses (1/10) == Issues == * None == Plan == * 2 day week next week then off until Jan 8th * Wrap up qemu work to a good state to handover -- Will Newton Toolchain Working Group, Linaro

12 years, 9 months

1
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[ACTIVITY] Week 49

by Will Newton

== Progress == * Rework QEMU AArch32 ARMv8 patches (3/10, TCWG-47, TCWG-48) * Further work on QEMU AArch64 FP patches (5/10, VIRT-183) * UK Memory Management Network Workshop on Friday (2/10) == Issues == * None == Plan == * More QEMU AArch64 FP -- Will Newton Toolchain Working Group, Linaro

12 years, 10 months

1
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[ACTIVITY] 2-6 December 2013

by Christophe Lyon

== Progress == - cross-validation: (1/10). Follow-up, minor maintenance and discussions on a few regressions. Now able to share top-level reports. - backports (1/10): * multilib_defaults for 4.7 * committed all approved backport * helped Michael solve some conflicts - disable peeling: (3/10) * confirmed it is now done by default on trunk, as part -fvect-cost-model=XXX. * Looked at benchmarks, comparing -fvect-cost-model=cheap (default) and -fvect-cost-model=unlimited. - benchmarks on trunk (1/10): observed some variations from one month to another on a few cases (checked June-November). This confirms the need to run benchmarks regularly on trunk, in addition to release branches. - cbuild2 (3/10): continued working on source release. Submitted a few small patches for review+integration. - misc (1/10): various conf-calls and meetings. == Next == - Make 2013.12 releases - cbuild2: continue testing, try to make 4.7 source release - libsanitizer on AArch64: resume work

12 years, 10 months

1
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[ACTIVITY] Week 49

by Yvan Roux

== Issues == * Tcpanda03 seems unusable. == Progress == * LRA on AArch32: o TCWG-345 : Analyse performance of LRA for ARM. (5/10) - Installed Saucy on Chromebook, lot of time wasted due to defective SD card - Frequency governor now set to performance. - Benchmark setting ongoing - Tcpand03 SSH access re-enabled, board setting seems ok, but respawned benchmarks are stuck and the board is no more reachable o TCWG-343 : Make LRA the default for the ARM backend (2/10) - Reduce iWMMXT testcase, analysis ongoing. - Trunk testsuite with LRA shows a couple new faillures. * Reviewed some merge requests. (1/10) * Loop specialization patch review started. (1/10) * Various meetings. (1/10) == Next == * Continue LRA, merge and patch reviews.

12 years, 10 months

1
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[ACTIVITY] 2 - 6 December 2013

by Omair Javaid

== Progress == * Updated, tested and submitted new patches for a couple of gdb testsuite failure on arm. [TCWG-269] [TCWG-34] [1/10] * Performed GDB git repository testing suite results comparison: [TCWG-34] [2/10] Compared results and prepared googldocsheets for the following: arm-native Vs arm-remote arm-native Vs x86-native arm-remote Vs x86-remote * Investigated difference/failures in arm-native vs arm-remote comparison sheet. [TCWG-34] [5/10] Re-ran timeout failures with different values of timeouts. Figured out causes of failures. Figured out why some tests exit without emitting any logical result. * In response to comments upstream tried to figure out alternate fix for dwarf2 fortran parameter test. [TCWG-267] [TCWG-34] [1/10] * Miscellaneous activities [1/10] == Plan == * Analyze new failures in arm-native Vs x86-native and arm-remote Vs x86-remote test results. * Fix test suite failures and submit patches if any. * Spend some time pining/updating/re-submit previous patches.

12 years, 10 months

1
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"[ACTIVITY] 2-06 Dec 2013"

by Venkataramanan Kumar

== Progress == - libssp gcc Initiated mails for upstream discussion on supporting global and TLS based libssp ABI for Aarch64. Now waiting for feedback from ARM maintainers. - Built few benchmarks with Linaro tool chain binaries. Faced some openmp failures, compiler disabled for libgomp. Looking to rebuild the linaro cross tool chain. - Rebased glibc trunk and ran cross glibc tests on V8 foundation model. With TLS SSP patch glibc's libresolve.so fails to build because the stage 1 GCC compiler emits global stack_chk_guard. The glibc dos not export global stack_chk_gaurd, when TLS based stack guard is set. Now looking at supporting and test both TLS and global stack guard ABI, but before that waiting for confirmation from ARM maintainers. - Reinstalled linux 13.04 ubuntu on my laptop - Tested the patch http://gcc.gnu.org/ml/gcc-patches/2013-12/msg00170.html for aarch64-none-elf target. No regressions found. == Plan == - Continue upstream discussions and post RFC patches for glibc and gcc libssp - Explore on cbuildv2 - Cross Build few openmp benchmarks

12 years, 10 months

1
0
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[ACTIVITY] 02-06 December

by Kugan

== Progress == - aarch64 bootstrapping (TCWG-348 4/10) - worked on this posted patch - 64bit divide for Armv7-a (TCWG-26) - Patched committed and Card closed - http://gcc.gnu.org/viewcvs/gcc?view=revision&revision=205444 - http://gcc.gnu.org/viewcvs/gcc?view=revision&revision=205666 - Integrate benchmarking into Cbuildv2 (TCWG-360 2/10) - Added missing functionality - Zero/sign extension elimination (TCWG-15 4/10) - Sent a reworked patch for comment == Plan == - address aarch64 bootstrapping review - Continue with Integrate benchmarking into Cbuildv2

12 years, 10 months

1
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[ACTIVITY] Week 49

by Zhenqiang Chen

== Issues == * None. == Progress == * 1.5 days off. * Misc update for Linaro crosstool-ng - Re-enable parallel build for do_cc_core. - Add linaro-armeb-none-eabi config. - Update all CT_TOOLCHAIN_PKGVERSION to "Linaro GCC 2013.11" * Share toolchain binaries configures to cbuild2 group. * Backporting r200103 and r205509 to linaro 4.8. * Collect Spec2k INT results with -fno-move-loop-invariants and -fira-loop-pressure on X86-64 and ARM Chrome book. Performance of different cases waves from -2% - 2%. But the overall performance changes < 0.5%. == Plan == * Continue on CCMP.

12 years, 10 months

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[Activity] Dec 2-8

by Rob Savoye

== Progress == * Setup new git mirror of new binutils-gdb.git repository, and added a cron job to update it every 10 minutes. (#369, .5/10) * Started modifying Cbuildv2 to use new binutils-gdb repository, which changes how we parse URLs. (.5/10) * Modified Cbuildv2 to produce fully statically linked binaries so 32bit ones run on any distro, including 64 bit. (#368, 3.5/10) * Worked with LAVA team to set up a private Jenkins for TCWG use only to protect test and benchmark data. (#379, 2/10) * Fixed Cbuildv2 bug where the dryrun function wasn't properly trapping configure and build errors. (.5/10) * Meetings & Card maintainance. (2/10) * Quick winter camping trip at the hot springs for my bday, hit -38C ! == Plan == * More tweaks to source and binary tarball creation. * Finish modifying Cbuildv2 to use new binutils-gdb repository. * Fix all the minor bugs caused by properly trapping errors from dryrun function. * Make the new Jenkins build in a 32 bit chroot on the TCWG build machines * Figure out why Jenkins doesn't import the Junit files. * Copy .sum files to remote host. * If new Arndale or APM boards arrive this week like promised, start evaluating them. * Get the S&M team to start using Gerrit for merge requests for Cbuildv2.

12 years, 10 months

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[ACTIVITY] Week 49

by Ryan Arnold

== Progress == * TCWG-367 drop --dostep, add --checkout (1/10) Completed with following git commits: commit 2d4d7588c1b05801ee5e1a924c8641ff7c322c07 Author: Ryan S. Arnold <ryan.arnold(a)linaro.org> Date: Fri Dec 6 11:46:40 2013 -0600 cbuild2.sh: remove --dostep. It's no longer supported. Also added testcase to make sure it returns an error. Author: Ryan S. Arnold <ryan.arnold(a)linaro.org> Date: Fri Dec 6 10:57:34 2013 -0600 Add cbuild2 --checkout <package>|all support with tests * misc (1/10) commit 9fb1c4404f8065ef844154e614ff4e7086fce176 Author: Ryan S. Arnold <ryan.arnold(a)linaro.org> Date: Thu Dec 5 12:21:20 2013 -0600 lib/package.sh: git status should be run in the current directory. commit 7bb4a9ce8ef440655fe45e6819b57da8d61e8728 Author: Ryan S. Arnold <ryan.arnold(a)linaro.org> Date: Wed Dec 4 11:47:56 2013 -0600 lib/package.sh: git st should be git status. * TCWG-356 Unify GIT URL parsing (5/10) * TCWG-359 Change branch character (2/10) Closed with following git commits: commit c9368930e6fb1ad46d08c2dbcc34d8167344ad28 Author: Ryan S. Arnold <ryan.arnold(a)linaro.org> Date: Tue Dec 3 16:29:00 2013 -0600 Finish git parser refactoring, use stamp functions, complete dryrun wrapping. commit eabbc74e48bc8c3a4addbc53ec6a492521193a0c Author: Ryan S. Arnold <ryan.arnold(a)linaro.org> Date: Wed Nov 27 16:31:20 2013 -0600 Working additions for git parser refactor and stamping. == Issues == *misc (1/10) - Discovered a bug in glibc when using upstream (4.9) gcc that isn't present in 4.8. This might have something to do with how binutils interacts with the compiler instead of simply a compiler issue: elf/dl-addr.c:152: multiple definition of `_dl_addr_inside_object' elf/dl-open.c:746: first defined here == Plan == * Create card for new glibc multiple definition problem, * Start working on glibc related cards

12 years, 10 months

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[Weekly] 02-06 DEC 2013

by Michael Collison

== This week == - Completed backport of 197997 - Completed backport of 203774 - Worked on GCC 4.8 FSF Release Branch Merge and initiated merge request and build == Next week == - Work on GCC 4.7 Release branch Merge - Begin work on other assigned backports == Future == Document missing features of cbuild for backports

12 years, 10 months

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[ACTIVITY] Week 49

by Renato Golin

== Progress == * MCJIT (2/10) - Disabling Remote MCJIT for now, just to add the self-hosting bot - Working on a more robust message passing interface - http://llvm.org/bugs/show_bug.cgi?id=18057 - Progress stalled, waiting for changes to child process handler * Buildbots (2/10) - Adding Chromebook self-hosting buildbot - http://lab.llvm.org:8011/buildslaves/linaro-chrome-02 - Adding Odroid XU check-all buildbot - http://lab.llvm.org:8011/buildslaves/linaro-odroidxu-01 * Vectorizer (2/10) - Implemented #pragma vectorize enable in LLVM - http://llvm.org/bugs/show_bug.cgi?id=18086 - Adding support in Clang to add metadata to IR for all three pragmas * Android (1/10) - Trying LLVM kernel on XU again - Managed to get adb/astboot to work - Custom kernels won't boot, Tinti will create a full image (CM+LLVM) * Release 3.4 RC2 (1/10) - Testing, no regressions - Some benchmarking regressions, investigating - http://llvm.org/pre-releases/3.4/rc2/ * Background (2/10) - Reviewing patches, discussions, meetings, etc == Plan == * Continue implementing pragma vectorize on Clang * Further release 3.4 testing and benchmarking * Continue investigating benchmark results for 3.4 * Re-start MCJIT MPI once changes to the child process handlers are in

12 years, 10 months

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armv5 and ATOMIC_INT_LOCK_FREE

by Riku Voipio

Hi, According the debian bug report [1], it is not possible to use std::future on armv5 targetting toolchains. This is because libstdc++ will only enable std::future if ATOMIC_INT_LOCK_FREE > 1. There is no LDREX for armv5 and older, so this definition is set to ATOMIC_INT_LOCK_FREE when compiling for ARMv4t or ARMv5. My impression is that you should be able to use the kernel helpers for atomic operations in lockfree (?) manner, so the ATOMIC_INT_LOCK_FREE definition is probably incorrect on older arm archs then? Riku [1] http://bugs.debian.org/727621

12 years, 10 months

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[ACTIVITY] 25-29 November 2013

by Christophe Lyon

== Progress == * Disable peeling: - spawned benchmarking jobs using recent trunk and another older one to check for performance regressions. - locally generated the code for the same benchmark to analyze the differences * cbuildv2: - retried to create 4.8-2013.11 source release. Identified a couple of minor issues, reported to Rob. - for 4.7-2013.11, need support for subdir in git URLs, fix on-ongoing by Ryan * Backports: - gave some support to Michael - a few have been reviewed/accepted. * libsanitizer: little progress this week; advised to take a look at recent LLVM sources. * trunk validation: filed some bugzilla reports; 2 of them fixed by Kyrill. == Next == * Disable peeling: - check benchmarks results - check code generation * cbuildv2: re-do source releases 4.8 and 4.7 2013.11 * Backports: - commit already approved ones, once cbuildv2 releases are OK - see which ones can be easily added - work on MULTILIB_DEFAULTS backport for 4.7

12 years, 10 months

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[ACTIVITY] Week 48

by Yvan Roux

== Issues == * None. == Progress == * LRA on AArch32: o TCWG-342 : UPSTREAM: LRA issue in gfortran with store minmaxsi - Committed as rev205526 . - Card resolved. o TCWG-344 : UPSTREAM: Thumb bootstrap failure with LRA - Committed THUMB_SECONDARY_INPUT_RELOAD_CLASS patch as rev205527. - Committed PR58785 patch as rev205581. - Card resolved. o TCWG-345 : Analyse performance of LRA for ARM - Gathered results and analysis still ongoing. o Working on a new failure with iWMMXT (LRA loops during constraints solving). * Reviewed some merge requests. == Next == * Continue on LRA * Loop specialization patch review.

12 years, 10 months

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[ACTIVITY] 25 - 29 November 2013

by Omair Javaid

== Progress == * Investigated remaining testsuite failures in ARM process record/replay. * Tested VFP, SIMD and other advance instruction types recording. * Ran GDB testsuite in various configurations on gdb7_6_1 code base and latest git repo. * Learnt some prologue and epilogue analysis heuristics for resolving process record bugs in arm. == Plan == * Analyze test results from gdb testsuite runs in various configs and update JIRA issues. * Complete testing of VFP, SIMD and other advance instruction types recording patch and Send updated patch. * Try to find a epilogue analysis heuristics for resolving reverse stepping issues in solib code.

12 years, 10 months

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[Weekly] 25-29 NOV 2013

by Michael Collison

== This week == - Completed backport of 202872 - Final checkin to upstream GCC SVN will be complete by Christophe Lyon == Next week == - Begin work on other assigned backports == Future == Document missing features of cbuild for backports

12 years, 10 months

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[ACTIVITY] 23-27 Nov 2013

by Venkataramanan Kumar

== Progress == - libssp gcc Posted RFC V2 patch to community. Updated comments from Richard and wating for some feed backs. - Libssp glibc - Sent out a patch for stack_chk_guard in Aarch64 along with TLS stack guard support. == Plan == - post RFC patches for glibc and gcc libssp - explore on cbuildv2 29-11-2013 Friday - Leave (AMD internal event) .

12 years, 10 months

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[Activity] Nov 24-30.

by Rob Savoye

== Progress == * Setup 64 bit centos-5 and suse-10 chroots for testing binary tarballs, and used them to verify the Cbuildv2 produced ones compile 'Hello World!", and run on a real target. * Got remote chromebook testing working in TCWG build farm. * Worked on getting GDB remote testing with gdbserver working. * Did build and test run on aarch64 APM board of GCC linaro-4.8-branch. * Changed Cbuildv2 to disable parallel make jobs when building GCC native on ARM or AARCH64 platforms, as the hardware can't handle the load. * Got the LSB tools installed and researched what they do. * Debugged why 32 bit binary tarballs made in a chroot won't run when installed on multiple x86_64 systems. Works now by statically linking everything. * Got test results, converted to Junit format for Jenkins. * More TCWG build farm admin issues. == Plan == * Continue working on GDB remote testing in the build farm. * More tweaks for binary releases. * Continue trying to get GCC trunk to build on APM board. * Figure out why Jenkins doesn't import the Junit files. * Probably more TCWG build farm admin issues, which is probably a continuing task, so I'll stop listing it every week. == Issues == * If I try to monitor a Jenkin's build via the "Console", it crashes my browser as the logs get huge. * Long weekend for Thanksgiving holiday means short work week... == Leave == * Off this coming Thursday for my birthday...

12 years, 10 months

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[ACTIVITY] 25-29 Nov 2013

by Kugan

== Progress == - cbuild2 benchmarking - Resolved access issues and imported into repository - continuing with the missing implementations - 64bit division for ARMv7-A - Algorithm is committed to trunk - enablement patch is posted for review - trunk bootstrapping issue - Setup foundation model and resolved space and kernel panic issues - There is a assembler compatibility issue with older assembler (-mabi=lp64); trying with the latest binutils - AARCH64 bootstrapping in progress with this - AARCH32 bootstraps with glibc but ran into issues with eglibc. == Plan == - Address zero/extension review comments - investigative bootstrapping issues - continue with cbuild2 benchmarking

12 years, 10 months

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[ACTIVITY] Week 48

by Zhenqiang Chen

== Issues == * None. == Progress == * Commit the fix for test case (lp1243022.c) by skipping arm-neon. * Spawn arm-none-eabi build for Linaro 2013.11 release. * Report PR59282: SPEC2K 252.eon ICE. * Rebase conditional compare patch to trunk and tests. - Update simplify_while_replacing to skip swapping compare in conditional compare. - Check whether operands of gen_ccmp_next clobber cc or not. - Add a short description about the over all algorithm. * Investigating loop-invariant impact on SPEC2K INT for x86-64 and ARM. Testing is ongoing, == Plan == * Continue on CCMP. == Planed leaves == * Dec 3 & 5: Annual leaves

12 years, 10 months

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[ACTIVITY] Week 48

by Renato Golin

== Progress == * Buildbots - Work-around for ClamAV (r195646), new bot in! - http://lab.llvm.org:8011/buildslaves/linaro-chrome-03 - After a week stable, I'll deactivate the old chromebook and re-fit it - Looking at MCJIT random breakages on A15 self-hosting tests - http://llvm.org/PR18057 - Proposed a fix, http://llvm-reviews.chandlerc.com/D2287 - Installed Arch on the ODroid XU, running a local buildbot on it - Investigating llvm-rtdyld but in reading debug information - http://llvm.org/PR18085 * Vectorizer - Mapping, discussing and proposing implementation for pragmas - http://llvm.org/PR18086 - http://llvm-reviews.chandlerc.com/D2289 * Release 3.4 RC1 - Running benchmarks comparing 3.3 with 3.4 - EEMBC within noise levels for geomean - O3: ~0.2% faster, ~0.7% bigger - Os: ~1.3% slower, ~0.6% bigger - Phoronix, ImageMagick: OK within std dev * LLVMAndroid - Tinti compiled the kernel 3.4 and some libs with LLVM - Trying to put Android on the ODroid XU (the official one is quite poor) - XU redirected to set as a buildbot, once ready, I'll use the other for Android * Background - Lots of patch reviews, discussions - Helping Graphics WG with Clover == Issues == Still ill because of implant, on/off throughout the week. == Plan == * Put the self-hosting bot up once it's fixed * Fix the XU bot * Try LLVM Android on XU again * Continue with the simple vectorization pragmas * Waiting on benchmark test-suite mode to create a new benchmark test-suite

12 years, 10 months

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[ACTIVITY] Week 48

by Will Newton

== Progress == * Committed binutils aarch64 ifunc patches * Committed glibc aarch64 ifunc patches * Cherry picked aarch64 gdb patch for upcoming 7.6.2 release * Sent out qemu ARM patch queue (VSEL, VMIN/MAXNM) * Start looking at aarch64 qemu * Benchmark strchr in cortex-strings == Issues == * None == Plan == * aarch64 qemu * UK Memory Management Network Workshop on Friday -- Will Newton Toolchain Working Group, Linaro

12 years, 10 months

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[ACTIVITY] Week 47 (short holiday week)

by Ryan Arnold

== Progress == * lib/git-parser.sh: Add support for ~ as branch designator and multi-/ branches. * Refactor cbuild2 to use git parser * Created stamp functions for cbuild2 US Thanksgiving Holiday == Next == * Finish refactor of cbuild2 to use git parser. * Create unified parser that wraps git parser. * Finish refactor of cbuild2 to use stamp functions. == Issues == * None

12 years, 10 months

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[ACTIVITY] Week 46

by Ryan Arnold

Forgot to hit send on this one == Progress == * Add documentation for git-parser.sh. * lib/git-parser.sh: Add no-url support. * testsuite/test.sh fix invocation of testsuite/git-parser-tests.sh to include ${topdir}. * Add lib/git-parser.sh and testsuite/git-parser-tests.sh. * Fix corner cases with <user>@<url>/<repo>.git[/branch]@<revision> 1) Allow http urls to be processed by 'git' cases. 2) Error check git-new-workdir and git checkout 3) Parse revision and branch properly when there might be a <user>@ in the url. * testsuite/test.sh: Update for breath to cover user@<url>/<repo>.git@<revision> * Fix get_srcdir to work with <user>@<repo>.git/branch@revision * Fix get_toolname and get_srcdir when using <user>@<repo>.git@revision == Issues == * None == Next == * Have cbuild2 start using the git parser

12 years, 10 months

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[ACTIVITY] Week 47

by Yvan Roux

== Issues == * Still some cbuild oddities. == Progress == * LRA on AArch32: o TCWG-342 : UPSTREAM: LRA issue in gfortran with store minmaxsi - Performance validation is OK, confirmed by kyrill. - Waiting for approval. o TCWG-344 : UPSTREAM: Thumb bootstrap failure with LRA - Pinged for THUMB_SECONDARY_INPUT_RELOAD_CLASS patch review - Validate and post patch for PR58785: http://gcc.gnu.org/ml/gcc-patches/2013-11/msg02459.html o TCWG-345 : Analyse performance of LRA for ARM - Analysing results mismatch between 2 pandas - Configured and ran spec2000 on Chromebook - Analysis ongoing == Next == * Continue on LRA * Reviews

12 years, 10 months

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[ACTIVITY] 18-22 November 2013

by Christophe Lyon

== Progress == * Released GCC 4.7 and 4.8 2013.11 releases. * Investigated potential regressions on trunk, as reported by continuous cross-validation. Reported some cases to Kyryll. Another, reported to Bin, turns out to be an unrelated, unstable testcase recently introduced. Will have to give a closer look at big-endian tests. * Updated libsanitizer patch for AArch64. It builds again but is not functional yet (running in the Foundation model currently); getting support from libsanitizer developers. Support for AArch64 will have to be committed in LLVM, and merged into GCC later. I'm going to continue prototyping under GCC though, and will submit changes to the libsanitizer team when ready. * GNU tar regression (extended_negsidi pattern): posted bugzilla, fixed by Richard. * cbuildv2: gave another try, pointing to staging.g.l.o, to discover that it was outdated too. Rob has fixed it since then. * Backports: gave some support to Michael Collison to help him get to speed. Prepared backport of Zhenqiang's "enhance phiopt to handle BIT_AND_EXPR" (TCWG -303) == Next == * Resume "disable-peeling" work. Mostly check that the current trunk contains what we want. * cbuildv2: retry to create source release 2013.11 * Backports: commit TCWG-303, and Charles' backport of his testsuite fix look at the others in the list. * libsanitizer for AArch64: make it functional

12 years, 10 months

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[ACTIVITY] 18 - 22 November 2013

by Omair Javaid

== Progress == * GDB ARM Process Record: - Completed work on arm process record Advance SIMD, vfp and coprocessor instruction recording. - Submitted initial patch for SIMD. VFP and coprocessor instruction decoding. - Resubmitted previous patches after incorporating suggestions. - Resolved patch line wrap issues and formating issues. * Macau visa and travel planning * Got started with using concur == Plan == * GDB ARM Process Record: - Follow up on previous patches. - Test VFP, SIMD and other advance instruction types recording. - Fix issues and submit their fixes if any. * Run GDB testsuite in various configurations and analyze failures.

12 years, 10 months

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[Activity Nov 18-24

by Rob Savoye

== Progress == * Created 32 bit chroots on all 6 TCWG build machines, did test toolchain builds via Cbuildv2, including a Canadian cross. I tested the win32 executables with wine and they work. * Setup all 6 TCWG build farm chromebooks to be able to do native builds and run tests with Cbuildv2. * Multiple discussions with LAVA team about Jenkins, Gerrit, LAVA, and GIT repositories. We need to have LAVA & Jenkins installed on our new x86_64 build machines in a way they can do builds in a 32 bit chroot. * Got Gerrit working with GCC and Cbuildv2 GIT repositories on staging.git.linaro.org, and merge requests ala 'git review' now work and can get approved. (Thanks to Milo) * Got the GCC git repository on staging to be in sync with upstream finally, as it wasn't auto updating. (Thanks to Milo) * Modified Cbuildv2 to get the host and build architectures right when building in a 32 bit chroot on a 64 bit build machine. * Fixed other weird issues in Cbuildv2 when building in a 32 bit chroot on an x86_64 platform. * Started process to get Kugan access to the APM board for benchmarking. * Got Jenkins doing builds and test runs on the new TCWG build machines. == Plan == * Get back to remote chromebook testing support for build machines. * Debug why 32 bit binary tarballs made in a chroot won't run when installed on an x86_64 system. * Probably more TCWG build farm admin issues.

12 years, 10 months

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[ACTIVITY] 18-22 Nov 2013

by Venkataramanan Kumar

== Progress == - libssp gcc - Posted RFC patch to community. Addressing gcc/glibc compatibility issues. - libssp glibc - Working on exporting stack_chk_guard in Aarch64 along with TLS stack guard support. == Plan == - post RFC patches (version 2) for glibc and gcc libssp

12 years, 10 months

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[ACTIVITY] Week 47

by Zhenqiang Chen

== Issues == * None. == Progress == * Commit the patch to support S2_<op1>_<Cn>_<Cm>_<op2> system register in AARCH64 GAS. * Identify the issue files in parallel build fail (PR57683) and backport r197467 and r198999 to FSF GCC 4.8. * Verify Linaro crosstool-ng to make sure Fortran is supported in all builds. * Try PGO build for ifcombine heuristics. But got "the control flow of function .. does not match its profile data". * Investigate loop-invariant heuristics and rtx cost to select SYMBOL_REF. But tests did not show performance gain. * Investigate Coremark conditional compare issue in Cortext-M since the BRANCH_COST is 1. == Plan == * Continue on CCMP. * Discuss ifcombine heuristics with upstream. == Planed leaves == * Dec 3 & 5: Annual leaves

12 years, 10 months

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[ACTIVITY] 18-22 Nov 2013

by Kugan

== Progress == - cbuild2 benchmarking - Done the initial frame work (just with one benchmark) and sent out for review - 64bit division for ARMv7-A - Posted the patch and added target hook documentation required == Plan == - Address zero/extension review comments - post 64bit divide patch with the required documentation - investigative bootstrapping issues - still waiting for h/w access

12 years, 10 months

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Re: Heap reclaim question/documentation

by Trevor Woerner

On 21 November 2013 07:12, Karlsson, Magnus <Magnus.Karlsson(a)lsi.com> wrote: > Just wondering if somebody could point me to a good document on how the heap > reclamation algorithm works for memory allocated in a user space program > using the regular malloc/calloc functions. Section 7.1.3, whose sub-sections include: "Implementation of malloc() and free()", "Tools and libraries for malloc debugging", and "Controlling and monitoring the malloc package", of Michael Kerrisk's "The Linux Programming Interface" (http://man7.org/tlpi/index.html) is one of the better reads of which I'm aware. He recommends reading the man pages for malloc_info, malloc_stats, mallopt, and mallinfo (among others) for more information. In the C language, reclamation of allocated memory is usually driven by the application. When you free() some memory, internal structures know the size of what was previously allocated at the given location (i.e. what was given to you by malloc()) and simply release that back into the heap. There are ways to tweak the allocation of memory.

12 years, 10 months

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[Weekly] 18-22 Nov 2013

by Michael Collison

== This week == - This week was mostly spent on coming up to speed on the Linaro backport process - Backport 202872 - Merged changes from trunk to Linaro branch == Next week == - Complete backport of 202872 - Begin work on other assigned backports == Future == No concrete plans yet.

12 years, 10 months

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condition_variable_any missing from libstdc

by Mark Pupilli

---------- Forwarded message ---------- From: Mark Pupilli <mpupilli(a)gmail.com> Date: 17 November 2013 14:07 Subject: condition_variable_any missing from libstdc To: linaro-toolchain(a)lists.linaro.org Hi, I sent this message a week ago but I don't think I was subscribed to the list correctly. Apologies if it is repeated (it doesn't show in the archive). I have a problem with my cross build of (Linaro GCC 4.8-2013.10). I get the following runtime linker errors regarding condition_variable_any: "relocation error: /usr/local/lib/librobolib.so: symbol _ZNSt22condition_variable_anyC1Ev, version GLIBCXX_3.4.11 not defined in file libstdc++.so.6 with link time reference" If I examine my built version of libstdc with readelf I get the following output: $ readelf -s ./src/.libs/libstdc++.so.6 | grep condition 10383: 000c58d8 68 FUNC LOCAL DEFAULT 11 _ZNSt15error_conditionC1E 10818: 000c58d8 68 FUNC LOCAL DEFAULT 11 _ZNSt15error_conditionC2E 10837: 000c5944 40 FUNC LOCAL DEFAULT 11 _ZNKSt15error_condition8c 10942: 000c591c 40 FUNC LOCAL DEFAULT 11 _ZNKSt15error_condition5v Where as with the apt-get installed 4.6 version of the toolchain shows: $ readelf -s /usr/arm-linux-gnueabi/lib/libstdc++.so.6 | grep condition 777: 000523b1 12 FUNC GLOBAL DEFAULT 12 _ZNSt22condition_variable@@GLIBCXX_3.4.11 929: 000522f1 104 FUNC GLOBAL DEFAULT 12 _ZNSt18condition_variable@@GLIBCXX_3.4.11 1037: 000523b1 12 FUNC GLOBAL DEFAULT 12 _ZNSt22condition_variable@@GLIBCXX_3.4.11 1198: 000522f1 104 FUNC GLOBAL DEFAULT 12 _ZNSt18condition_variable@@GLIBCXX_3.4.11 1686: 00052385 14 FUNC GLOBAL DEFAULT 12 _ZNSt18condition_variable@@GLIBCXX_3.4.11 2166: 00052359 12 FUNC GLOBAL DEFAULT 12 _ZNSt18condition_variable@@GLIBCXX_3.4.11 2438: 00052359 12 FUNC GLOBAL DEFAULT 12 _ZNSt18condition_variable@@GLIBCXX_3.4.11 2685: 00052365 16 FUNC GLOBAL DEFAULT 12 _ZNSt18condition_variable@@GLIBCXX_3.4.11 3186: 00052395 26 FUNC GLOBAL DEFAULT 12 _ZNSt22condition_variable@@GLIBCXX_3.4.11 3448: 00052395 26 FUNC GLOBAL DEFAULT 12 _ZNSt22condition_variable@@GLIBCXX_3.4.11 3643: 00052375 14 FUNC GLOBAL DEFAULT 12 _ZNSt18condition_variable@@GLIBCXX_3.4.11 (Which is still missing anything to do with condition_variable_any, but given that my native 4.8 compiler doesn't contain this symbol either and my code builds and runs natively, I assume this is how it should be). Here is my build's version information: $ arm-linux-gnueabi-gcc -v Using built-in specs. COLLECT_GCC=arm-linux-gnueabi-gcc COLLECT_LTO_WRAPPER=/home/mark/arm-linux-gnueabi-4.8.2/libexec/gcc/arm-linux-gnueabi/4.8.2/lto-wrapper Target: arm-linux-gnueabi Configured with: ../gcc-linaro-4.8-2013.10/configure --target=arm-linux-gnueabi --prefix=/home/mark/arm-linux-gnueabi-4.8.2 --with-local-prefix=/home/mark/arm-linux-gnueabi-4.8.2 --disable-nls --enable-shared --enable-multilib --disable-decimal-float --enable-languages=c,c++ --with-mpfr-include=/home/mark/gcc-4.8-arm-linux/gcc-build/../gcc-linaro-4.8-2013.10/mpfr/src --with-mpfr-lib=/home/mark/gcc-4.8-arm-linux/gcc-build/mpfr/src/.libs --enable-clocale=gnu --enable-threads=posix --enable-__cxa_atexit --disable-libstdcxx-pch --with-system-zlib --with-headers=/home/mark/arm-linux-gnueabi-4.8.2/include --with-libs=/home/mark/arm-linux-gnueabi-4.8.2/lib --enable-libstdcxx-threads --enable-libstdcxx-time Thread model: posix gcc version 4.8.2 20131014 (prerelease) (Linaro GCC 4.8-2013.10) I configured libstdc++-v3 respectively as follows: $ ../gcc-linaro-4.8-2013.10/libstdc++-v3/configure --host=arm-linux-gnueabi --prefix=/home/mark/arm-linux-gnueabi-4.8.2/ --enable-multilib --enable-shared --disable-nls --disable-libstdcxx-pch --enable-libstdcxx-threads --enable-libstdcxx-time I assumed the relevant entries to enable C++11 threading and condition variables etc would have been --enable-libstdcxx-threads --enable-libstdcxx-time. I must be missing some other options or have done something else wrong. Any suggestions? thanks, Mark

12 years, 10 months

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[ACTIVITY] Week 47

by Renato Golin

== Progress == * Short week - Two days off due to a messy implant bloating my face - Should be better on Monday * Cambridge LLVM Day, Cambridge University Computer Lab - Presented the status of the auto-vectorizer in LLVM * Releasing candidate 1 of LLVM 3.4 - All tests green, running benchmarks - http://people.linaro.org/~rengolin/llvm/ * Buildbots - Adding Chromebook self-hosting (fixing MCJIT tests) - Adding Chromebook test-suite (fixing ClamAV) - Will turn off the old Chromebook and re-install it for benchmarks - Will add an Odroid XU in pair with the community one to be added next week * Background - Patch reviews, discussions * EEMBC rgbcmy implementation requires extensive changes to the compiler - Will deal with them on the background over the next months - While checking other EEMBC problems == Plan == * Continue the 3.4 release * Look at vectorization pragmas * Look at other EEMBC results

12 years, 10 months

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[ACTIVITY] Week 47

by Will Newton

== Progress == * Committed a couple of gdb patches * Debug malloc to a working state, performance improved * First version of glibc aarch64 ifunc support * Found a couple of bugs in binutils aarch64 ifunc support == Issues == * Missed two days due to illness * Power cut and broadband outage on Wednesday afternoon == Plan == * Respin and submit glibc docs patches * Submit glibc aarch64 ifunc code -- Will Newton Toolchain Working Group, Linaro

12 years, 10 months

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Is there any description about the toolchain release file naming rule?

by YongQin Liu

Hi, All Under this site http://releases.linaro.org/13.09/components/toolchain/binaries/, there are many files released. but do we have any description on the file naming rules? Sorry for my simple question, I just want to know what the files are used for. which one I should select when I need to use toolchain. Like the files below, I can guess that aarch64 means that it will generate files run on aarch64 platform, but I can not guess what's the difference between linux and none, and not know what's the difference between gnu and elf. So if you have any wiki/link about the the naming rules or description about the file, please share me. crosstool-ng-linaro-1.13.1-4.8-2013.09-01.tar.bz2 crosstool-ng-linaro-1.13.1-4.8-2013.09.tar.bz2 gcc-linaro-aarch64-linux-gnu-4.8-2013.09-01_linux.tar.bz2 gcc-linaro-aarch64-linux-gnu-4.8-2013.09-01_linux.tar.xz gcc-linaro-aarch64-linux-gnu-4.8-2013.09-01_runtime.tar.bz2 gcc-linaro-aarch64-linux-gnu-4.8-2013.09-01_src.tar.bz2 gcc-linaro-aarch64-linux-gnu-4.8-2013.09-01_win32.zip gcc-linaro-aarch64-linux-gnu-4.8-2013.09-01_win32.zip.xz gcc-linaro-aarch64-linux-gnu-4.8-2013.09-20130912_win32.exe gcc-linaro-aarch64-linux-gnu-4.8-2013.09_linux.tar.bz2 gcc-linaro-aarch64-linux-gnu-4.8-2013.09_linux.tar.xz gcc-linaro-aarch64-linux-gnu-4.8-2013.09_runtime.tar.bz2 gcc-linaro-aarch64-linux-gnu-4.8-2013.09_src.tar.bz2 gcc-linaro-aarch64-linux-gnu-4.8-2013.09_win32.zip gcc-linaro-aarch64-linux-gnu-4.8-2013.09_win32.zip.xz gcc-linaro-aarch64-none-elf-4.8-2013.09-01_linux.tar.bz2 gcc-linaro-aarch64-none-elf-4.8-2013.09-01_linux.tar.xz gcc-linaro-aarch64-none-elf-4.8-2013.09-01_win32.zip gcc-linaro-aarch64-none-elf-4.8-2013.09-01_win32.zip.xz gcc-linaro-aarch64-none-elf-4.8-2013.09_linux.tar.bz2 gcc-linaro-aarch64-none-elf-4.8-2013.09_linux.tar.xz gcc-linaro-aarch64-none-elf-4.8-2013.09_win32.zip gcc-linaro-aarch64-none-elf-4.8-2013.09_win32.zip.xz gcc-linaro-aarch64_be-linux-gnu-4.8-2013.09-01_linux.tar.bz2 gcc-linaro-aarch64_be-linux-gnu-4.8-2013.09-01_linux.tar.xz gcc-linaro-aarch64_be-linux-gnu-4.8-2013.09-01_runtime.tar.bz2 gcc-linaro-aarch64_be-linux-gnu-4.8-2013.09-01_win32.zip gcc-linaro-aarch64_be-linux-gnu-4.8-2013.09-01_win32.zip.xz gcc-linaro-aarch64_be-linux-gnu-4.8-2013.09_linux.tar.bz2 gcc-linaro-aarch64_be-linux-gnu-4.8-2013.09_linux.tar.xz gcc-linaro-aarch64_be-linux-gnu-4.8-2013.09_runtime.tar.bz2 gcc-linaro-aarch64_be-linux-gnu-4.8-2013.09_src.tar.bz2 gcc-linaro-aarch64_be-linux-gnu-4.8-2013.09_win32.zip gcc-linaro-aarch64_be-linux-gnu-4.8-2013.09_win32.zip.xz gcc-linaro-aarch64_be-none-elf-4.8-2013.09-01_linux.tar.bz2 gcc-linaro-aarch64_be-none-elf-4.8-2013.09-01_linux.tar.xz gcc-linaro-aarch64_be-none-elf-4.8-2013.09-01_win32.zip gcc-linaro-aarch64_be-none-elf-4.8-2013.09-01_win32.zip.xz gcc-linaro-aarch64_be-none-elf-4.8-2013.09_linux.tar.bz2 gcc-linaro-aarch64_be-none-elf-4.8-2013.09_linux.tar.xz gcc-linaro-aarch64_be-none-elf-4.8-2013.09_win32.zip gcc-linaro-aarch64_be-none-elf-4.8-2013.09_win32.zip.xz gcc-linaro-arm-linux-gnueabihf-4.8-2013.09-20130912_win32.exe gcc-linaro-arm-linux-gnueabihf-4.8-2013.09_linux.tar.bz2 gcc-linaro-arm-linux-gnueabihf-4.8-2013.09_linux.tar.xz gcc-linaro-arm-linux-gnueabihf-4.8-2013.09_runtime.tar.bz2 gcc-linaro-arm-linux-gnueabihf-4.8-2013.09_src.tar.bz2 gcc-linaro-arm-linux-gnueabihf-4.8-2013.09_win32.zip gcc-linaro-arm-linux-gnueabihf-4.8-2013.09_win32.zip.xz gcc-linaro-armeb-linux-gnueabihf-4.8-2013.09_linux.tar.bz2 gcc-linaro-armeb-linux-gnueabihf-4.8-2013.09_linux.tar.xz gcc-linaro-armeb-linux-gnueabihf-4.8-2013.09_runtime.tar.bz2 gcc-linaro-armeb-linux-gnueabihf-4.8-2013.09_win32.zip gcc-linaro-armeb-linux-gnueabihf-4.8-2013.09_win32.zip.xz -- Thanks, Yongqin Liu --------------------------------------------------------------- #mailing list linaro-android(a)lists.linaro.org <linaro-dev(a)lists.linaro.org> http://lists.linaro.org/mailman/listinfo/linaro-android linaro-validation(a)lists.linaro.org <linaro-dev(a)lists.linaro.org> http://lists.linaro.org/pipermail/linaro-validation

12 years, 10 months

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CortexM toolchain recommendations

by Trevor Woerner

Hi toolchain gurus, I am about to start some projects working with CortexMx devices and am wondering if anyone has an opinion on which toolchain(s) I should use/investigate? Being a fan of Linaro, my first instinct would be to use cbuild2 to build an arm-none-eabi- toolchain from a 4.8.x tree. But looking around I can't help notice https://launchpad.net/gcc-arm-embedded. Does anyone know if gcc-arm-embedded has things the Linaro toolchain doesn't wrt Cortex M0, M3, and M4 device/instruction support? Best regards, Trevor

12 years, 10 months

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Fwd: [Bug target/59216] [ARM] negdi*extendsidi regression

by Christophe Lyon

-------- Original Message -------- Subject: [Bug target/59216] [ARM] negdi*extendsidi regression Date: Wed, 20 Nov 2013 18:06:14 +0100 From: christophe.lyon at st dot com <gcc-bugzilla(a)gcc.gnu.org> To: Christophe LYON <christophe.lyon(a)st.com> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59216 --- Comment #2 from christophe.lyon at st dot com --- Basically, the working code does: asrs r3, r2, #31 negs r2, r2 sbc.w r3, r3, r3, lsl #1 while the failing one does: negs r2, r2 asrs r3, r2, #31 -- You are receiving this mail because: You reported the bug.

12 years, 10 months

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Testing Android on LAVA

by Renato Golin

Hi LAVA folks, I don't know if you guys know, but Android is moving to LLVM for the next release or so. As such, we'll need to do a lot of testing between now and next release to make sure each component can be compiled (and runs correctly) with LLVM on an incremental basis. We're trying to come up with a way for remotely testing the Linux kernel booting on ARM devices, more specifically an Android stack, and I'm finding it hard to do that with my home equipment. Doing that in LAVA would be ideal, and I know the Android team does it already, but our constraints could be a little different. Basically, there are two fronts: 1. Building Android components with LLVM, using a GCC-compiled kernel booting on an ARM board, in LAVA. This is something we should work internally on how to do it, and it'll be between Android, LAVA and Toolchain groups. 2. Building the Linux kernel with LLVM, and using a GCC-compiled image (like stock CyanogenMod) to test the kernel. We don't have such a kernel (many patches), but the LLVMLinux guys do, and that's where they come in. On the second case, the topic of this email, we'd have to liaise with them to fire jobs at LAVA from their own infrastructure (originally, manually only), and that might need some thinking. But ultimatelly, we want to have those jobs running on LAVA, so that later on we'd be able to have a third layer: Linux+Android built with LLVM with the same system level tests. Since the LLVMLinux guys don't have access to much ARM hardware, and since it's easier for us to scale (or to re-define) hardware requirements, having them running on LAVA makes even more sense. Is this something we can do? Is this being done already? Is this just a question of legal/corporate decision, or is there any technical issues we have to look into? Android folks, It might make more sense if you guys just grab their kernel and build the Android system based on that internally, so that we don't need external access to job submissions in LAVA, but that would mean work from you guys to patch it up, and that might not be in the roadmap for the next months. Is that a feasible route? cheers, --renato

12 years, 10 months

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[ANNOUNCE] Linaro GCC 4.7 and 4.8 2013.11 released

by Christophe Lyon

The Linaro Toolchain Working Group is pleased to announce the release of both Linaro GCC 4.8 and Linaro GCC 4.7. Linaro GCC 4.7 2013.11 is the twentieth release in the 4.7 series. Based off the latest GCC 4.7.4+svn204656 release, this is the seventh release after entering maintenance. Interesting changes include: * Updates to GCC 4.7.4+svn204656 Linaro GCC 4.8 2013.11 is the eighth release in the 4.8 series. Based off the latest GCC 4.8.2+svn204657 release, it includes performance improvements and bug fixes. Interesting changes include: * Updates to GCC 4.8.2+svn204657 * Fixes for bugs LP #1243656, #1243022 * Backport fix for PR/58423 * AArch64: added support for tiny model GOT access. * Improved Aarch32 A-profile multilibs support (--with-multilib-list option) The source tarballs are available from: http://releases.linaro.org/13.11/components/toolchain/gcc-linaro/4.7 http://releases.linaro.org/13.11/components/toolchain/gcc-linaro/4.8 Downloads are available from the Linaro GCC page on Launchpad: http://www.linaro.org/downloads/ More information on the features and issues are available from the release pages: https://launchpad.net/gcc-linaro/4.7/4.7-2013.11 https://launchpad.net/gcc-linaro/4.8/4.8-2013.11 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

12 years, 10 months

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[Activity] Nov 10-16

by Rob Savoye

= Progress == * Created Cards for the infrastructure Team TODO list. * Finished Cbuildv2 support for building GDB binary tarballs. * Got Arch linux up on Odroid XU board again, seems stable, did a build and test run. * Experimented with lava-tool. * Tried to get GCC trunk building native on aarch64 for libsanitizer patch testing. * Upgraded gmp to 5.1.3 in infrastructure/ to work around a configure bug triggered by crouton native builds on a chromebook. * Setup chromebook slaves in new toolchain build farm. * Started adding support to Cbuildv2 to handle git URLs with a user name, ie.. git(a)staging.git.linaro.org to work around git repo problem. == Plan == * Finish support for user names in URLs. * Continue on remote testing support. * Keep trying gcc trunk on aarch64 native. * Fix git repo. == Issues == * GCC git repo hasn't been auto updating the svn branch of linaro-4.8-branch. It used to work... updating manually is now broken as well. * Somehow qemu snapshots tarballs are overwriting the toolchain directories on snapshots.linaro.org. * I don't think lava-tool is going to be useable for toolchain testing, as it only queues up an executable test case to be run later, whereas GCC expects the test to get run right away.

12 years, 10 months

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[ACTIVITY] 12-15 November 2013

by Christophe Lyon

One day off == Progress == * Prepared 4.7 and 4.8 2013.11 releases. Some delay because of board crashes and disk full issues. * Aarch64: committed 'frame grows downward' patch. This removes a dependency for libsanitizer and libssp. * libsanitizer on Aarch64: blocked by GCC trunk not bootstrapping currently on Aarch64 HW (reported by Rob) * Looked at cross-build failures of trunk after new -fisolate-erroneous-paths. Ramana pointed me to Marcus' glibc patch, and I could switch my builds from eglibc to glibc. * cross-validations: updated list of configurations built&tested after discussion with Richard during Connect. == Next == * Announce 4.7 and 4.8 2013.11 releases * Continue investigating 'extended neg' fix (aka tar regression) * Look for patches to fix AArch64 bootstrap, so that we can test libsanitizer

12 years, 10 months

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[ACTIVITY] Week 46

by Yvan Roux

One day off. == Issues == * Various cbuild issues: - disk full, boards down and benchmarks launched on different boards == Progress == * LRA on AArch32: - Proposed a ARM backend fix for the Fortran issue http://gcc.gnu.org/ml/gcc-patches/2013-11/msg01997.html - Performance analysis ongoing * Merge reviews and backports. == Next == * Continue on LRA

12 years, 10 months

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[ACTIVITY] 11 - 15 November 2013

by Omair Javaid

== Progress == * Wrote ARM and Thumb stub handlers for simd, vfp and coprocessor instruction recording. * Read documentation on VFP and Neon register set to figure out a register recording method. * Follow up on upstream patches. * Investigating a un-handled instruction test suite failure in arm process record. * 9th/10th Muharram Public holiday on Thursday and Friday. == Plan == * Fix failures in arm process record due to un-handled instruction. * Get started on writing handlers for coproc, vfp and simd instructions.

12 years, 10 months

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[ACTIVITY] Week 46

by Zhenqiang Chen

== Issues == * None. == Progress == * One day (Nov. 15) off. * Misc update for Linaro crosstool-ng - Use newlib-linaro-2.0.0-2013.11-1. - Update fortran support related scripts and configs according to Matt's comments. * Propose to support S2_<op1>_<Cn>_<Cm>_<op2> system register in AARCH64 GAS. - Yufeng followed-up it and added full TRACE registers support. * Investigate heuristic to tune ifcombine (TCWG-313) - Got some new fails in regression tests since some optimizations can not get the expected result. - Collect Spec2k INT result. Overall there is no changes. But there are -2 - 1% changes for several cases. - PGO tests are ongoing. == Plans == * Continue on CCMP. * Continue on ifcombine tuning.

12 years, 10 months

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[ACTIVITY] Week 46

by Renato Golin

== Progress == * Preparing presentation on auto-vec for LLVM - For Cambridge LLVM Day next Monday - If accepted, also for FOSDEM 14 * Tracing strided access changes needed in auto-vec (PR17677) - Reading the paper, preparing a reference implementation - Discussing details and preparing the LLVM code to introduce it - After a few attempts, it's clear that the code is not yet ready to cope with the changes - I'll have to work on the surrounding code to re-factor it for more robust integration - As well as triming some other edges (like pragmas) to help implement it * Planning Android builds - Trying to get a reference platform (most likely the new Arndale) - LLVMLinux folks will help streamlining a kernel package for it * Connect reservations, booking flight, etc. - All done! == Plan == * Monday at Cambridge LLVM Day at CUCL * 3.4 Release testing * Looking at vectorization pragmas and general structure of the memory dependency checks

12 years, 10 months

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[ACTIVITY] Week 46

by Will Newton

== Progress == * Fix ld testsuite on mainlne * More malloc debugging and refactoring * glibc patch review * Investigate gdb hardware breakpoint issues == Issues == * Didn't get much done on Friday due to sick baby == Plan == * malloc * Follow up glibc docs patches * Further investigate gdb hardware breakpoint issue -- Will Newton Toolchain Working Group, Linaro

12 years, 10 months

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[ACTIVITY] November 6-8 2013

by Christophe Lyon

Short week: 2 days off after Connect. == Progress == * LP 1243656: reverted commit which causes a regression in GNU tar's tests. * Committed Kugan and Zhenqiang's backports to our branch * Status on backports: ILP32 support missing from binutils is blocking quite a few GCC backports (because of dependencies between commits) * Some problems building trunk since Nov 5th (failures in eglibc) == Next == * Make 2013.11 releases * Continue working on GNU tar problem: find a proper fix. * Commit 'aarch64 frame grows downward' patch if Richard approves it. * Check status of aarch64 lib sanitizer branch if Rob manages to have it build & execute tests * Check Neon intrinsics testsuite status with Rob

12 years, 11 months

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[ACTIVITY] Week 45

by Yvan Roux

2 post-connect days off. == Issues == * None. == Progress == * LRA on AArch32: - Analyzed testsuite results with last upstream LRA patches. - One remaining regression observed on Fortran. Reported it upstream. - Submitted a fix for the Thumb bootstrap issue http://gcc.gnu.org/ml/gcc-patches/2013-11/msg00776.html - Launched benchmarks for performance analysis * Merge reviews. * Misc: - Internal post-connect feedback meeting. == Next == * LRA : - Look at Steven Bosscher fix http://gcc.gnu.org/ml/gcc-patches/2013-11/msg01029.html - Performance analysis * Backports

12 years, 11 months

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[ACTIVITY] Week 45 - Nov 4 - Nov 8

by Ryan Arnold

== Progress == * Monday off for recovery from Connect. * Created git_revisions branch for refactoring * Added verified and correct --help and --usage text. * Error check for spurios '=' after --<switch> * Add toplevel test.sh for testing cbuild2.sh commands * Fix get_URL and checkout to support git revisions. * Improve dryrun to prevent grepping missing files. * Added glibc support to cbuild2. * Cleaned up merged cbuildv2 remote development branches * Started cbuild2 bisect. == Plan == * Merge glibc support upstream == Issues == * None

12 years, 11 months

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[ACTIVITY] 4 - 8 November 2013

by Omair Javaid

== Progress == * Monday and Tuesday off for Jetlag recovery. * Arm process record: - Updated Patches for all fixes and features. - Performed testing in arm native and remote configuration. - Performed regression testing on arm and x86. - Submitted all new patches after updates. * Started gdb.reverse test suite failure investigation and open new Jira issues accordingly. * Started work co-processor instructions decoding for arm process record. == Plan == * Continue work on co-processor instruction decoding for arm process record. * Respond to upstream suggestions on patches sent previously.

12 years, 11 months

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[ACTIVITY] Week 45

by Zhenqiang Chen

== Issues == * Binaries build FAIL in cbuild, but OK in local build. == Progress == * Misc update for Linaro crosstool-ng - Update newlib to 2013.11. - Modify scripts to meet the check of A-profile multilib support. - Add fortran/libfortran support for bare metal build. - Fix multi-lib conflict issue in local patch - A refer A-profile bare metal build is shared at http://cbuild.validation.linaro.org/snapshots/gcc-linaro-arm-none-eabi-4.8-… * Update conditional compare patch according to comments. * Investigate heuristic to tune ifcombine (TCWG-313). == Plan == * Fix the binaries build FAIL issues. * Continue on CCMP. * Continue on ifcombine tuning. == Planed leaves == * Nov. 15 - 16: Team event and HelloGCC in Beijing.

12 years, 11 months

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[ACTIVITY] 4 November - 8 November 2013

by Kugan

== Progress == - Looked into Cbuild2 and current benchmarking scripts - Talked to Rob to understand the requirements and plan for next 2 weeks - Backported gcc testcase fix that causes regression in Linaro 4.8 for armv5te. == Plan == - Taking leave next week. - Start with benchmarking scripts after that

12 years, 11 months

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[ACTIVITY] 4 November - 8 November 2013

by Venkataramanan Kumar

Worked from AMD Austin. == Progress == * TLS based libssp support. Solved segmentation faults in clone and fork tests regressing from the patch I wrote. Ran glibc tests. Two tests still fail, tst-cancel-17.c and tst-memqueue8.c. They both use pthread_cancel and with my patch they time out. Debugging it to find the cause. Informed Maintainer about my status and got some advice to debug. == Plan == * Taking vacation next week. * But will continue send out gcc patch for libssp. * reinstall ubuntu on my laptop

12 years, 11 months

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