- linaro-toolchain - lists.linaro.org

by Renato Golin

== Progress == * IAS (TCWG-377) - Abandoning softvfp implementation, we should not use it - Both softvfp and dwarf flags went back to kernel/android - Macro issue has been solved, IAS is now Gold! - Still doesn't compile the kernel, though... ;) - Discussions about inline assembly bailing on asm garbage * AArch64 (TCWG-387) - Trying to get the build working and passing tests - Some worries about config.guess updates (license) - Commented out some old JIT tests, they will never work - Memory allocation failures look real bugs, though - At least Five real bugs in test-suite * Background - Patch reviews - Further discussions about Dwarf vs. EH unwind tables - Discussing vectorizer pragmas with GCC list - Reviewing EuroLLVM14 papers - Helping Rob upgrade TCWG Chromebooks * Time - CARD-862 8/10 - Others 2/10 == Plan == * Take a look at Compiler-RT * Check some of the AArch64 errors * Maybe EH/unwind issues * Connect

11 years, 2 months

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"invalid expression as operand" in aarch64 inline asm

by Kugan

Hi, I finally got around to checking the attached patch for the https://bugs.launchpad.net/ubuntu/+source/gcc-4.8/+bug/1270789 I noticed attached patch causes regression for pr38151.c in gcc test-suite. A reduced test-case that triggers this is: static unsigned long global_max_fast; int __libc_mallopt (int param_number, int value) { __asm__ __volatile__ ("# %[_SDT_A2]" :: [_SDT_A2] "nor" ((global_max_fast))); global_max_fast = 1; } In this regard I have couple of questions: 1. Is the in-line asm valid? Look ok to me. 2. For the pr38151.c regression, asm diff is as shown below. < add x0, x0, :lo12:.LANCHOR0 < ldr x0, [x0] --- > ldr x0, [x0,#:lo12:.LANCHOR0] This causes: pr38151.c:(.text+0x10c): relocation truncated to fit: R_AARCH64_LDST64_ABS_LO12_NC against `.rodata' collect2: error: ld returned 1 exit status. If I however increase the alignment of .rodata where .LANCHOR0 is defined, this passes. Is alignment of BITS_PER_UNIT valid for SYMBOL_REF? If I change it as I am doing this attached patch, is there anything else I need to do. Thanks, Kugan

11 years, 2 months

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linaro/eglibc 2.19

by Khem Raj

Hi Linaro'ites We have upgraded eglibc to 2.19 in OpenEmbedded and I started to notice WARNING: No recipes available for: /home/kraj/angstrom/sources/meta-linaro/meta-linaro-toolchain/recipes-core/eglibc/eglibc_2.18.bbappend NOTE: Resolving any missing task queue dependencies And it seems in this bbappend the SRC_URIs are overridden to point to a Linaro release of eglibc I wanted to know if there is a 2.19 head for linaro eglibc being created ? in that case that bbappend needs fixing too. Thanks -Khem

11 years, 2 months

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Re: Reg: Recommended options for aarch64

by Matthew Gretton-Dann

Ganesh, Thank you for your email - please note this question is best directed at linaro-toolchain(a)lists.linaro.org where it is more likely to get picked up quickly. Our general rules for benchmarking are to use -mcpu=cortex-a## -O3 as the compiler flags (where ## is the particular CPU you are interested in). Linaro's philosophy is to try and get the best results possible that normal users will see, we don't go looking for 'magic' options that may give better performance on one benchmark, but not in general. Thanks, Matt On 20 February 2014 09:22, Gopalasubramanian, Ganesh <Ganesh.Gopalasubramanian(a)amd.com> wrote: > Hi, > > We would like to run some benchmarks in the foundation model. > I like to know which is the best option-set (GCC compiler options) that the linaro community recommends for aarch64. > > Regards > Ganesh > -- Matthew Gretton-Dann Linaro Toolchain Working Group matthew.gretton-dann(a)linaro.org

11 years, 2 months

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[ACTIVITY] 10-14 FEB 2014

by Kugan

== Progress == - vectorizer (7/10) - Looked into vectorizer target-hooks - enablement of half-float for vectorising; dropped the patch after discussing - Started analysing code generated with unlimited model - gcc 4.8 regression (1/10) - Built Novemnebr and December release (native with system libc) - Ran spec2k fp. Can see regression for ammp with -O3 (with -march=armv7-a and -mthumb) -Started bisecting - Chromebook reset-up (2/10) - SD card died and setup again - Using hdd for gcc testing == Plan == - Check ARMv5 regression for unaligned access - Look into vectorizer cost model/benchmarking

11 years, 2 months

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linaro toolchain recipe updates

by Khem Raj

The following changes since commit aa242029aa5eecc84a27f2ba026e8fedaf925dbd: Merge "linaro-image-lng: add package lng-network-config" (2014-02-14 16:24:51 +0000) are available in the git repository at: git://github.com/kraj/meta-linaro master for you to fetch changes up to e4b9751778fe7772185f12cbd29453bf80460546: binutils: Rename version to linux-2.24 (2014-02-16 05:16:00 +0000) ---------------------------------------------------------------- Khem Raj (3): gcc: Lets not override OE-Core gcc gcc-linaro-4.7: Delete binutils: Rename version to linux-2.24 .../binutils/binutils-cross-canadian.inc | 29 - .../binutils/binutils-cross-canadian_2.24.bb | 3 - .../binutils-cross-canadian_linaro-2.24.bb | 3 + .../recipes-devtools/binutils/binutils-cross.inc | 27 - .../binutils/binutils-cross_2.24.bb | 3 - .../binutils/binutils-cross_linaro-2.24.bb | 3 + ...dk_2.24.bb => binutils-crosssdk_linaro-2.24.bb} | 2 +- ...{binutils-2.24.inc => binutils-linaro-2.24.inc} | 5 +- .../binutils-armv5e.patch | 0 .../binutils-poison.patch | 0 .../binutils-uclibc-100-uclibc-conf.patch | 0 ...binutils-uclibc-300-001_ld_makefile_patch.patch | 0 ...binutils-uclibc-300-006_better_file_error.patch | 0 ...ils-uclibc-300-012_check_ldrunpath_length.patch | 0 .../binutils-uclibc-gas-needs-libm.patch | 0 .../binutils-xlp-support.patch | 0 .../fix-pr15815.patch | 0 .../libiberty_path_fix.patch | 0 .../libtool-2.4-update.patch | 0 .../libtool-rpath-fix.patch | 0 .../mips64-default-ld-emulation.patch | 0 .../relocatable_sdk.patch | 0 .../recipes-devtools/binutils/binutils.inc | 148 -- .../{binutils_2.24.bb => binutils_linaro-2.24.bb} | 4 +- .../recipes-devtools/gcc/gcc-4.7.inc | 145 - ...-vis_hide-gen-hide-list-Do-not-make-defin.patch | 93 - ...USE_PT_GNU_EH_FRAME-Define-for-systems-us.patch | 49 - .../gcc/gcc-4.7/100-uclibc-conf.patch | 39 - .../gcc/gcc-4.7/200-uclibc-locale.patch | 2810 -------------------- .../gcc/gcc-4.7/203-uclibc-locale-no__x.patch | 235 -- .../gcc/gcc-4.7/204-uclibc-locale-wchar_fix.patch | 54 - .../gcc/gcc-4.7/205-uclibc-locale-update.patch | 521 ---- .../gcc/gcc-4.7/301-missing-execinfo_h.patch | 15 - .../gcc/gcc-4.7/302-c99-snprintf.patch | 15 - .../gcc/gcc-4.7/303-c99-complex-ugly-hack.patch | 16 - .../gcc/gcc-4.7/304-index_macro.patch | 30 - .../gcc/gcc-4.7/305-libmudflap-susv3-legacy.patch | 51 - .../gcc/gcc-4.7/306-libstdc++-namespace.patch | 40 - .../recipes-devtools/gcc/gcc-4.7/64bithack.patch | 63 - .../gcc/gcc-4.7/740-sh-pr24836.patch | 31 - .../gcc/gcc-4.7/800-arm-bigendian.patch | 36 - .../gcc/gcc-4.7/COLLECT_GCC_OPTIONS.patch | 25 - .../gcc/gcc-4.7/GLIBC_DYNAMIC_LINKER.patch | 165 -- .../gcc/gcc-4.7/arm-hard-float-loader.patch | 48 - .../gcc/gcc-4.7/avoid-oob-array-access.patch | 45 - .../gcc/gcc-4.7/cpp-honor-sysroot.patch | 40 - .../gcc/gcc-4.7/define_insn_reservation.patch | 118 - .../gcc/gcc-4.7/disable-texinfo-5.patch | 107 - .../gcc/gcc-4.7/disable_relax_pic_calls_flag.patch | 48 - .../recipes-devtools/gcc/gcc-4.7/disablesdt.patch | 66 - .../gcc/gcc-4.7/fix-g++-sysroot.patch | 428 --- .../gcc/gcc-4.7/fortran-cross-compile-hack.patch | 32 - .../gcc-4.7/gcc-4.3.1-ARCH_FLAGS_FOR_TARGET.patch | 33 - .../gcc-4.3.3-SYSROOT_CFLAGS_FOR_TARGET.patch | 116 - .../gcc/gcc-4.7/gcc-argument-list-too-long.patch | 33 - .../gcc-4.7/gcc-armv4-pass-fix-v4bx-to-ld.patch | 31 - .../gcc/gcc-4.7/gcc-poison-dir-extend.patch | 27 - .../gcc-4.7/gcc-poison-system-directories.patch | 223 -- .../gcc-uclibc-locale-ctype_touplow_t.patch | 72 - .../gcc/gcc-4.7/libgcc-sjlj-check.patch | 61 - .../recipes-devtools/gcc/gcc-4.7/libtool.patch | 29 - .../gcc/gcc-4.7/mips64-default-n64.patch | 19 - .../gcc/gcc-4.7/optional_libstdc.patch | 86 - .../gcc/gcc-4.7/ppc_no_crtsavres.patch | 72 - .../gcc/gcc-4.7/ppc_with_cpu.patch | 752 ------ .../gcc/gcc-4.7/ppce5500-e6500-support.patch | 713 ----- .../recipes-devtools/gcc/gcc-4.7/pr32219.patch | 72 - .../gcc/gcc-4.7/rs6000-tables.patch | 135 - 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binutils-linaro-2.24}/binutils-uclibc-300-012_check_ldrunpath_length.patch (100%) rename meta-linaro-toolchain/recipes-devtools/binutils/{binutils-2.24 => binutils-linaro-2.24}/binutils-uclibc-gas-needs-libm.patch (100%) rename meta-linaro-toolchain/recipes-devtools/binutils/{binutils-2.24 => binutils-linaro-2.24}/binutils-xlp-support.patch (100%) rename meta-linaro-toolchain/recipes-devtools/binutils/{binutils-2.24 => binutils-linaro-2.24}/fix-pr15815.patch (100%) rename meta-linaro-toolchain/recipes-devtools/binutils/{binutils-2.24 => binutils-linaro-2.24}/libiberty_path_fix.patch (100%) rename meta-linaro-toolchain/recipes-devtools/binutils/{binutils-2.24 => binutils-linaro-2.24}/libtool-2.4-update.patch (100%) rename meta-linaro-toolchain/recipes-devtools/binutils/{binutils-2.24 => binutils-linaro-2.24}/libtool-rpath-fix.patch (100%) rename meta-linaro-toolchain/recipes-devtools/binutils/{binutils-2.24 => binutils-linaro-2.24}/mips64-default-ld-emulation.patch (100%) rename 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11 years, 2 months

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-mfpu=softvfp+vfp in LLVM

by Renato Golin

Richard, I found some emails about you implementing softvfp back in 2003, and I'd like to know what is the expected behaviour when it conflicts with the target triple, for example: -triple arm-linux-gnueabihf + -mfpu=sofvfp+vfp In this case, in LLVM, the triple sets "-float-abi=hard" but the fpu would set "+soft-float-abi", which are contradictory flags. Is that case even possible? If so, what's the expected behaviour? Soft or hard float? Do the extra flags always override the triple behaviour? Is it expected that *every* compiler flag will work on a last-seen-sets-behaviour manner? cheers, --renato

11 years, 2 months

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[ACTIVITY] February 10-16

by Maxim Kuvyrkov

== Week of February 10th == - Reproduced STREAM performance regression. Started investigation. (3/10) - Setup development environment on HP Chromebook 11. (3/10) -- Chrome OS + crouton + ubuntu 12.04 + ppa/chromebook-arm -- produced a nice dev board environment. - Continued account setup and preparations for Connect. (2/10) - Misc. (2/10) -- Various meetings. -- Volunteered as admin for GCC's GSoC 2014. Filled in the application, started to stir up buzz in the GCC community. == Week of February 17th == - Continue investigation of STREAM performance regression. - Prepare FSF GCC 4.10 presentation for Connect. - Look more into how LAVA does things and how to customize rootfs'es for boards. -- In particular I'm interested in how to boot rootfs with matching kernel and linux-tools (perf is what I need) with ssh server on keystone board. -- Maxim Kuvyrkov www.linaro.org

11 years, 2 months

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[ACTIVITY] 10 - 14 Feburary 2014

by Omair Javaid

== Progress == * Updated, tested and re-submitted patch for arm native watchpoint/hwbreak rework. [2/10] * Updated, split-up and tested patches for process record ASIMD, VFP etc support. [TCWG-251] [TCWG-252] [3/10] * Tried setting up gdb for aarch64, no luck yet. [TCWG-389] [1/10] * Investigation of work required for catchpoints support for remote gdb and gdbserver. [TCWG-263] [2/10] * Study armv8 instruction set for record replay support. [TCWG-389] [2/10] == Plan == * Follow up on upstream patches. * Study aarch64 code and create task breakdown for record/replay support. [TCWG-389] * Setup gdb for aarch64 and try to run a demo application. [TCWG-389] * Write how-to for using scripts to compare two gdb testsuite runs. [TCWG-96] * Out of office on Tuesday and Wednesday for follow up on Macau visa application.

11 years, 2 months

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[ACTIVITY] Week 7

by Yvan Roux

== Issues == * none == Progress == * 4.8 2014.02 Engineering release. (3/10) * TCWG-58 : AArch64: Enable libsanitizer (2/10) o re-based christophe's patch on fresh LLVM sources. o committed in LLVM (Thanks Renato for your help) o Progress stopped on this card until 4.10 GCC is opened * LRA on AArch32: o TCWG-343 : Make LRA the default for the ARM backend (0/10) - No progress this week on my side. - Vladimir upstreamed a fix for Thumb code size regression http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59535 o TCWG-345 : Analyse performance of LRA for ARM. (1/10) - re-run Spec2K on Cortex-a15. * Misc: o LCA'14 : AArch64 toolchain status session. (1/10) o Support Christian Bruel in his Linaro ramp up. (1/10) o Various meetings. (2/10) == Next == * Continue the on-going tasks * backports review

11 years, 2 months

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[ACTIVITY] Week 07

by Zhenqiang Chen

== Issues == * None == Progress == * Take care lp: 1270040, lp:1278337 and Beagleboard "Abort" issue. * Respawn 2014.01 release to use newlib-linaro-2.1.0-2014.02 for baremetal toolchains (http://cbuild.validation.linaro.org/binaries/2014.01-01/) * Test codes to duplicate shared compares to get more conditional compares. Fix the bootstrap issue. But the latest test does not show performance improvement in Spec2K. * Rebase and test the CCMP patch. * Read document about aarch64 CCMP/CCMN instructions and write codes/patterns to generate the instructions. Test is ongoing. == Plans == * Ccmp for AARCH64.

11 years, 2 months

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[Activity] Feb 10-16

by Rob Savoye

== Progress == * Figure how to have tcwgweb and cbuild-tools process the test results from Jenkins and produce the diffs for comparison. (TCWG-391 6/10) * Wrote script to convert Jenkins produced data files to tcwgweb format. (TCWG-391 1/10) * Meetings and misc. (3/10) - Worked on LCA14 presentation. == Plan == * Continue fighting with tcwgweb to run test comparisons for Jenkins builds. TCWG-391) * Now that SSH is setup correctly in the TCWG build farm, GCC testing tries to execute the remote tests, but hit's an error in DejaGnu, which needs to be debugged and fixed. (TCWG-324) == Leave == * Off to Nepal & Mt Everest after Connect.

11 years, 2 months

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[Weekly] 10-14 FEB 2014

by Michael Collison

== This week == Monday - Off Reworked backports off origin instead of crypto-backport branch. Also used read/write git branch to push - Affected backports 201164-206168, 201170, 201175, 201261, 201263 and 202020 Submitted backports for code review via git review - Aarch64 ILP backports: 201164-206168, 201170, and 201175 - Aarch64 support for NEG in vectors registers: 201261 and 201263 - Aarch64 support for SISD shifts: 202020 == Next week == Submit backport 202256 for code review Backport 202407 assigned to me == Future == Things you plan to do in the future. -- Michael Collison Linaro Toolchain Working Group michael.collison(a)linaro.org

11 years, 2 months

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[ACTIVITY] Week 7

by Renato Golin

== Progress == * IAS (TCWG-377) - Stopping progress on .dn/.qn aliases, not suitable for IAS atm. - Working on softvfp+vfp aliases (PR18689) * EHABI (TCWG-124) - Removed -arm-disable-ehabi - Waiting for Keith's patch to work on EHABI respecting uwtables * Compiler-RT (TCWG-125) - Adding sanitizer guidelines for GCC developers - Implemented --rtlib=compiler-rt for Linux targets - Test-suite runs fine, only one error (PR18812) * AArch64 (TCWG-387) - First native builds, updating config.guess/sub (license issues) - Found some JIT problems, unittests should be disabled - Found some memory test failures - Found 20 failures in test-suite * Background - Usual patch reviews & discussions - Started a fire on GCC list, will monitor interactions closer - Had a BoF accepted at the GNU Cauldron about GCC+LLVM collaboration - Discussing possible LTO changes to binutils with GCC devs - Helping Christophe/Yvan add AArch64 support for asan * Time - CARD-862 8/10 - Others 2/10 == Plan == * Continue softvfp in Clang's driver * Work on Dwarf unwind tables * Investigate RT and AArch64 failures

11 years, 3 months

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[ACTIVITY] 10 - 14 February 2014

by Will Newton

== Progress == * newlib 2.1.0-2014.02 release (2/10) * Research and analysis of malloc workloads for benchmarking (2/10, TCWG-160) * QEMU ARMv8 CRC instructions (4/10, TCWG-52) * Slides for Connect (1/10) * Misc. patch management and looking at bugs (1/10) == Issues == * None == Plan == * QEMU CRC instructions * Finalize slides for Connect * malloc -- Will Newton Toolchain Working Group, Linaro

11 years, 3 months

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[ANNOUNCE] Linaro GCC 4.8 2014.02 released

by Yvan Roux

The Linaro Toolchain Working Group is pleased to announce the 2014.02 engineering release of Linaro GCC 4.8. As announced at Linaro Connect USA 2013 Linaro GCC is moving to a pattern of quarterly stable releases, with engineering releases in the intervening months. This is the first engineering release. The next stable release will be the 2014.04 release. Linaro GCC 4.8 2014.02 is the eleventh release in the 4.8 series. Based off the latest GCC 4.8.3+svn207411 release, it includes performance improvements and bug fixes. Interesting changes include: * Updates to GCC 4.8.3+svn207411 * ARM-v8 crypto intrinsics support * New vectorizer cost model The source tarball is available from: http://releases.linaro.org/14.02/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 page: https://launchpad.net/gcc-linaro/4.8/4.8-2014.02 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

11 years, 3 months

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Fwd: seemingly bug in Linaro gcc 4.8

by Koen Kooi

This should match what we have in meta-linaro/dora, which is the linaro 2013.12 toolchain release. ---------- Forwarded message ---------- From: Koen Kooi <koen(a)dominion.thruhere.net> Date: 17 January 2014 19:35 Subject: Fwd: seemingly bug in Linaro gcc 4.8 To: Koen Kooi <koen.kooi(a)linaro.org> Begin doorgestuurd bericht: > Van: Khem Raj <raj.khem(a)gmail.com> > Onderwerp: seemingly bug in Linaro gcc 4.8 > Datum: 17 januari 2014 17:56:23 CET > Aan: Koen Kooi <koen(a)dominion.thruhere.net> > > Hey Koen > > I am seeing a problem with linaro gcc-48 basically angstrom/2013.12 release > The issue is attached sample C file. When compiled and run on my ArchLinux > box which is running upstream gcc 4.8.2 it works ok > > but on beagleboard it fails. > > > to compile > > $CXX -pthread -std=gnu++11 a.cpp > > on ARCH > > kraj@leo ~ > g++ b.cpp -std=gnu++11 -pthread > kraj@leo ~ > ./a.out > 140309495478016 i: 1 > 140309503870720 i: 2 > > on Beagleboard > > root@beagleboard:~# ./std-thread > pure virtual method called > terminate called without an active exception > Aborted > > Can you pass this to right folks in Linaro and get some help in resolving it > > I havent yet trried it with OE-Core gcc which is also gcc 4.8 > > The issue is most probably ARM related as it seems to me. > > Thanks for help > > -Khem >

11 years, 3 months

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Configuration specifics of prebuilt libc binaries

by Evan Carson

Hello, I'm maintaining an older release we have which uses the older toolchian binaries in gcc-linaro-arm-linux-gnueabi-2012.03-20120326_linux. I've identified a bug in glibc we appear to be encountering and would like to port the fix back. I initially went the route of compiling the above toolchain binaries from source as described in the readme.txt but then found that the cross compiler binary build does not include the e/glibc build and these appear to be sucked in in binary form (oneiric-sysroot-r1). Are there any documents how these prebuilt libc binaries were created? Please note that I'm not asking in general how to build glibc. I've built a version with and without this bug patched to verify that it is indeed what we are hitting. I'm more hoping to get an idea of how the specific binaries mentioned above were built. Thanks in advance for any help! Evan Carson

11 years, 3 months

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[Weekly] 3-7 FEB 2014

by Michael Collison

== This week == - Backported 206261 and 201263 - AArch64 support NEG in vector registers - Backported 202020 - Support SISD shifts - Backported 202259 - AARCH64, fix return types for vaddvq_s64, vaaddvq_u64 - Travel back to US on Friday, February 7th == Next week == - Submit backport for review once crypto instruction review is complete and approved - Continue backports from trunk - New backports == Future == -- Michael Collison Linaro Toolchain Working Group michael.collison(a)linaro.org

11 years, 3 months

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linaro_binutils-2_24-2013_12_release tag and associated commits missing

by Gregory Fong

Hello, The binutils 2.24-2013.12 release page says that the release was built from the linaro_binutils-2_24-2013_12_release tag, but that tag doesn't seem to actually be present in the git repo at http://git.linaro.org/toolchain/binutils.git . Could that tag please be pushed? Thanks and regards, Gregory

11 years, 3 months

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[Activity] Feb 3-9

by Rob Savoye

== Progress == * Cbuildv2 now builds a static gdbserver for cross linux targets. (1/10) * Fixed Cbuildv2 bugs and added feature requests from Venkat, who is bravely being our beta site. (1/10) * Got .sum files produced from Jenkins builds copied to tcwgweb. Much of this was getting everything setup to allow files to be copied securely. (TCWG-386 - 3/10) * QEMU image prep for softfp and Rasberry PI testing. (TCWG-380 - 2/10) * Meetings and misc. (3/10) - Tweaks to Jenkins support so build names the remote directory in a way tcwgweb expects. - Added more info to TCWG Build Farm wiki page. (https://wiki.linaro.org/TCWG%20build%20farm) == Plan == * Figure out how to make tcwgweb run test comparisons. * Now that SSH is setup correctly in the TCWG build farm, GCC testing tries to execute the remote tests, but hits an error in DejaGnu, which needs to be debugged and fixed. (TCWG 324) * Add Win32 installer for Canadian cross built binary releases to Cbuildv2. (TCWG-381)

11 years, 3 months

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[ACTIVITY] Week 6

by Yvan Roux

== Issues == * none == Progress == * LRA on AArch32: o TCWG-343 : Make LRA the default for the ARM backend (0/10) - No progress this week. o TCWG-345 : Analyse performance of LRA for ARM. (3/10) - Continue analysis on Cortex-a15. * LRA on AArch64: (2/10) o Start to look at PR 59222 (ICE with ILP32). * Branch merge and backports reviews. (2/10) * Continued Linaro 4.8 release performance on Cortex-a15. (2/10) * Various meetings. (1/10) * Misc: o start to prepare AArch64 toolchain status for Connect session. == Next == * Continue the on-going tasks * 4.8 2014.02 Engineering release

11 years, 3 months

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[ACTIVITY] 3-7 February 2014

by Christophe Lyon

== Progress == * Libsanitzer for AArch64: (3/10) - QEMU patch to handle missing mmap flag accepted. - Charles was able to build GCC + run the sanitizer tests on board - cleanup patch, ready to be sent to the LLVM list for approval * Cross-validation: (1/10) - extending timeout to 5h for aarch64-linux seems to be sufficient when using qemu-aarch64 * 2014.02 release preparation: (4/10) - branch merge - backported new vectorizer cost model (cheap, dynamic, unlimited), and ran some benchmarks. - asked Kugan to check the few improvements observed when using -fvect-cost-model=unlimited - reviewed Crypto intrinsics backport from Michael Collison. Discussed the use of gerrit+jenkins with him and Rob. - Charles ran the validation of the Crypto intrinsics backport on AArch64 hardware - I cross-validated it using binutils-linaro-2.24-2013.12, to make sure we release components capable enough to interoperate. - upgrading binutils in cbuildv1/tcwg-web would help, until we can switch to jenkins+cbuildv2+gerrit * Misc (2/10): conf-calls, meetings == Next == * libsanitizer on AArch64: post patch to LLVM list * crypto intrinsics: commit patch for 2014.02 release

11 years, 3 months

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[ACTIVITY] 3 - 7 Feburary 2014

by Omair Javaid

== Progress == * Short week: Public holiday on Wednesday 5th Feburary 2014. [2/10] * Ran gdb testsuites for arm and x86 (native + remote) with all in progress patches applied. [1/10] * Investigated and triaged arm only failures. [2/10] * Investigated gdb.dwarf2/implptr-64bit.exp failure and submitted patch to disable it for 32-bit targets.[2/10] * Installation and configuration of new desktop machine. [1/10] * Investigation of stack unwinding failures on arm. [1/10] * Investigation of work required to implement record and replay on aarch64. [1/10] == Plan == * Setup gdb for aarch64 and try to run a demo application. * Investigate remaining arm only failures in gdb for arm and work towards closeout of CARD-321. * Travel to Islamabad to receive passport back from Chinese embassy for Macau visa.

11 years, 3 months

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[ACTIVITY] February 3-9

by Maxim Kuvyrkov

== Week of February 3rd == - Various administrative bits and account setup. (6/10) - Worked my way through to getting access to LAVA board lab. Tried to reproduce performance regression on STREAM benchmark. (2/10) - Public holiday. (2/10) == Week of February 10th == - Continue account setup. Get work environment up. - Get to know the team. - Continue investigation of STREAM benchmark. -- Maxim Kuvyrkov www.linaro.org

11 years, 3 months

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[ACTIVITY] Week 05 & 06

by Zhenqiang Chen

== Issues == * None == Progress == * Jan. 31 - Feb. 6: Chinese Spring Festival holidays . * Test codes to duplicate shared compares to get more conditional compares. But still get unexpected bootstrap fail on Chrome book. * Test codes to enable shrink-wrap for TARGET_APCS_FRAME. * Update patch for PR 59837. * Create a reference linaro-arm-linux-gnueabihf-raspbian build . == Plans == * Tuning ccmp performance * Enable shrink-wrap for TARGET_APCS_FRAME.

11 years, 3 months

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[ACTIVITY] 3 -7 February 2014

by Kugan

== Progress == - Started implementing TARGET_ATOMIC_ASSIGN_EXPAND_FENV (5/10) - Regression testing with the implementation; found some issues and discussed with Matt - Working on fixing them - Patch for Vectorizer generates unaligned access when -mno-unaligned-access committed upstream (2/10) - This also triggered some regression with ARMv5 and looking into them (2/10) - Set-up qemu aarch64 for gcc testing (1/10) == Plan == - Check ARMv5 regression for unaligned access - Look into vectorizer cost model/benchmarking

11 years, 3 months

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Yocto Build of Toolchain with package tool rpm doesn't like the "dash" in the Release

by Gary Hannon

This is an attempt to build TI mcsdk 3.0.3.15 with bitbake tisdk-server-rootfs-image It fails trying to make rpms for the linaro toolchain. | DEBUG: Python function write_specfile finished | DEBUG: Executing shell function BUILDSPEC | error: line 4: invalid tag value("^[A-Za-z0-9+._]+$") Release: Release: r2-arago3 | error: Package has no %description: external-linaro-toolchain-2.15.armv7ahf_vfp_neon | Building target platforms: armv7ahf_vfp_neon-oe-linux-gnueabi | DEBUG: Python function do_package_rpm finished | DEBUG: Python function do_package_write_rpm finished | ERROR: Function failed: BUILDSPEC (see /home2/ghannon/keyDSP/build/mcsdk/build/arago-tmp-external-linaro-toolch ain/work/armv7ahf-vfp-neon-oe-linux-gnueabi/external-linaro-toolchain-20 13.03-r2-arago3/temp/log.do_package_write_rpm.8491 for further information) ERROR: Task 40 (/home2/ghannon/keyDSP/build/mcsdk/sources/meta-linaro/recipes-devtools/ external-linaro-toolchain/external-linaro-toolchain.bb, do_package_write_rpm) failed with exit code '1' If I change Release: r2-arago3 to not have a - in the spec file then I can build the rpms manually with the same command. Is there a place where I can change that globally? Gary Hannon Sr. Software Engineer CSP Inc. 43 Manning Road Billerica, MA 01821 978-663-7598 x1509 ghannon(a)cspi.com

11 years, 3 months

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[ACTIVITY] Week 6

by Renato Golin

== Progress == * IAS - Having a go at .dn/.qn aliases - Some Dwarf 2/3 discussions, kernel build flags, etc * EHABI - Tables being generated even when no EH in C - Will need some tinkering in Clang and LLVM - Huge discussion about EHABI, Dwarf unwinding and exception tables - Starting the refactory of EHABI to cope with the differences * Compiler-RT - Finding the best way to use compiler-RT with Clang (not an easy task!) * Background - Usual patch reviews & discussions - Mapping AArch64 features implemented for Connect session - Playing with the Calxedas for some benchmarks * Time - CARD-862 8/10 - Others 2/10 == Plan == * Continue with EHABI refactoring * Implement --rtlib in Clang for compiler-rt usage * Continue .dn/.qn implementation

11 years, 3 months

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[ACTIVITY] 3 -7 February 2014

by Will Newton

== Progress == * 3 day week * Further work on longjmp/setjmp Systemtap probes on ARM (1/10, TCWG-378) * Research and analysis of malloc workloads for benchmarking (5/10, TCWG-160) == Issues == * None == Plan == * More work on an application level malloc benchmark framework * Resurrect glibc benchmark graphing script * newlib release * gdb 7.7 release (build an rc to troubleshoot releasing from git) -- Will Newton Toolchain Working Group, Linaro

11 years, 3 months

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kernel support for cortex A8 hardware watchpoints

by Marc Kleine-Budde

Hello Ulrich, I'm on a freescale mx53 (single core, cortex a8) and trying to find a nasty problem in our $CUSTOMER's application. Working hardware watch point support in gdb should solve the problem, or at least brings us a big step forward. I stumbled over your about three years old thread[1] about the cortex a8 memory mapped debug registers problem. Do I understand correctly, that you had a8 watch point running on at least one board? Have you got any code and or pointers to get watch point support running? regards, Marc Kleine-Budde [1] http://lists.linaro.org/pipermail/linaro-toolchain/2011-February/000820.html -- Pengutronix e.K. | Marc Kleine-Budde | Industrial Linux Solutions | Phone: +49-231-2826-924 | Vertretung West/Dortmund | Fax: +49-5121-206917-5555 | Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |

11 years, 3 months

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Linaro GNU Compiler (GCC) toolchain : for Renesas RZ (ARM Cortex-A9) + FreeRTOS (Demo Project)

by Steffen Sprung

*Hi LINARO-TEAM,* I would like start a software development on a “Renesas RZ (ARM Cortex-A9) MPU (R7S721010xxx” by using Eclipse IDE (Kepler - 4.3.1). > Global objective = Use free SW development tools I have read, that the “Linaro GCC Toolchain Release Supports Full Range of ARM Cortex-A Processors” and it’s an open source software for the ARM architecture, including the GCC toolchain. > Well – I think that is what I need. So, I have installed the Linaro Toolchain (gcc-arm-none-eabi-4_7-2013q3-20130916-win32.exe) and test the compilation of the “*Hello World ARM C Project*” for the Target Processor “cortex-A9” > So, the compilation is OK. *NOW, I would like prepare a small TEST-Project with FreeRTOS.* FreeRTOSV8.0.0_Release_Candidate_2 > I have found the “Renesas RZ (ARM Cortex-A9) RTOS Demo”: http://www.freertos.org/Renesas_RZ_Cortex-A9-RTOS.html But the two projects are provided to be built with the* IAR Embedded Workbench <http://www.iar.com/ewarm>* or the *ARM DS-5 <http://arm.com/products/tools/software-tools/ds-5/index.php> embedded development tools*. > I have seen that the DS-5 Development Studio is not for free but it use also the Linaro GNU Compiler (GCC) toolchain. So, I have tried to import the “Renesas RZ (ARM Cortex-A9) RTOS Demo” project to Eclipse, *but the import doesn’t work – and I’m not sure that the project uses the Linaro GNU GCC Compiler**.* > I think that Demo project for DS-5 use also special plugins/configuration settings from the Development Studio – so this can’t work ?!… *HELP:* *I’m new in the “Eclipse IDE / Compiler (GCC) toolchain” WORLD … * So, can you help me to give me a good direction - *what I need to do *to make running this small “Blinky-Demo for Renesas RZ (ARM Cortex-A9) with the FreeRTOS” by using the Linaro GCC Toolchain. > Or have you another small Demo project for the Linaro GCC Toolchain which uses the FreeRTOS for the Renesas RZ (ARM Cortex-A9) family? … Or you think that is not easily possible to do that for a Newcomer like me? I hope that you can help me to put me on the right road. Best regards, *Steffen SPRUNGACTIA Automotive* ================= Software Engineer ================= *ACTIA* Automotive 5 Rue Jorge SEMPRUN – BP 74215 31432 TOULOUSE Cedex 4 (FRANCE) Tél.: + 33 (0)5 61 17 68 75 Fax: +33 (0)5 61 55 42 31 Skype: steffen.sprung EMAIL: steffen.sprung(a)actia.fr ACTIA: http://www.actia.com [image: image001] *P* Avant d’imprimer ce mail, demandez-vous si ceci est nécessaire. Before printing this email, assess if it is really needed.

11 years, 3 months

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systemtap test suite compilation failed: runtime/vma.c :133:21: error: pointer targets in initialization differ in signedness

by Naresh Kamboju

Hi, The systemtap test suite compilation failed with below error. ARCH: arm --------------- kernel location: kernel version: 3.13.0-1-linaro-arndale systemtap location: /usr/local/bin/stap systemtap version: version 2.5/0.157, non-git sources gcc location: /usr/bin/gcc gcc version: gcc (Ubuntu/Linaro 4.8.1-10ubuntu8) 4.8.1 **** failed systemtap kernel-devel smoke test: In file included from /usr/local/share/systemtap/runtime/sym.c:16:0, from /usr/local/share/systemtap/runtime/linux/runtime.h:198, from /usr/local/share/systemtap/runtime/runtime.h:24, from /tmp/stapvEzrD5/stap_f7468ebd0051d533d2bae853173fe5a7_892_src.c:24: /usr/local/share/systemtap/runtime/vma.c: In function '_stp_vma_mmap_cb': /usr/local/share/systemtap/runtime/vma.c:133:21: error: pointer targets in initialization differ in signedness [-Werror=pointer-sign] const char *name = (dentry != NULL) ? dentry->d_name.name : NULL; ^ cc1: all warnings being treated as errors make[4]: *** [/tmp/stapvEzrD5/stap_f7468ebd0051d533d2bae853173fe5a7_892_src.o] Error 1 make[3]: *** [_module_/tmp/stapvEzrD5] Error 2 WARNING: kbuild exited with status: 2 Pass 4: compilation failed. [man error::pass4] **** aborting testing. Please let me know if you need more information. Best regards Naresh kamboju

11 years, 3 months

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[ACTIVITY] 27 - 31 January 2014

by Omair Javaid

== Progress == * Fixed remaining issues in rework of hwbreakpoint and watchpoint implementation for arm native targets. Tested and submitted patch. [TCWG-177] [8/10] * Installation and Setting up of new desktop machine. [2/10] == Plan == * Run testsuites to see current status of arm gdb. * Follow up on submitted patches. * Public holiday on Wednesday 5th February.

11 years, 3 months

1
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[ACTIVITY] 27-31 Januery 2014

by Christophe Lyon

* Libsanitizer for AArch64: (4/10) - seems to be mostly working, but trouble with validation both using the Foundation Model and qemu-aarch64. - Some tests seems to loop forever while unwinding under qemu, but run fine under the Foundation model - Conversely the Foundation Model shows some random errors, and the corresponding tests pass under qemu - Some random timeouts with the Foundation Model, despite using ssh multiplexing - Added a small patch to qemu to hande missing mmap flag. Need to send upstream. - asked Rob to run GCC testsuite with my patch on AArch64 but it's too unstable these days * Cross-validation (2/10) - script now able to validate a GCC patch and compare results with unmodified GCC trunk - added arm-none-eabi target - using qemu-aarch64 for aarch64-none-linux-gnueabi but the validations now time out. Need investigation, but I might have to revert to no execution for this target. - identified a problem with the recent armv7-ve patch * Benchmarks: (1/10) - collecting data for 4.8 tables * Peeling: (1/10) - backported new vectorizer cost model to check it if's OK to include it in our next release * Misc (2/10): conf-calls, meetings, docs (howtos for TCWG) == Next == * libsanitizer on AArch64 * fix cross-validation on aarch64-none-linux-gnu * benchmarks: complete table * backports: chek new vectorizer cost model, monthly branch merge, review Michael's backports of Crypto intrinsics

11 years, 3 months

1
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[ACTIVITY] Week 5

by Yvan Roux

* 2 days week (university & child care). == Issues == * none == Progress == * LRA on AArch32: o TCWG-343 : Make LRA the default for the ARM backend (0/10) - No progress this week o TCWG-345 : Analyse performance of LRA for ARM. (1/10) - Configured and ran benchmarks on Cortex-a15. * Looked at Linaro 4.8 release performance on Cortex-a15. (2/10) * Misc. (1/10) o Booked Hotel and flight for connect == Next == * Back on LRA and lib GMP

11 years, 3 months

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[Activity] 27 Jan - 31 Jan 2014

by Venkataramanan Kumar

== Progress == * Investigate "PGO" for Aarch64 (3/10). Bootstap testing aarch64 with PGO for GCC.Stage 2, feedback profile in progress. Tested a small test case for -fbranch-probabilities, works same as x86_64. Working on checking the "gcda" files generated and profile runs for coremark. * Cbuild2 discussed with rob, ryan on using cbuild2 for developement. (3/10) Thanks Rob for fixing some issues and adding features that I requested. Tested some features added. Captured it as FAQ. * Reinstalled ubuntu OS on my laptop (2/10) Misc (2/10) ------------- AMD internal meetings and did some investigations == Plan == - Continue run EMBCC and coremark benchmarks with -PGO enabled. - Going on marriage vacation from 07-Feb till 06 March == Issues=== Follow up upstream libssp GCC discussions. No response yet after 2 pings :(

11 years, 3 months

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[ACTIVITY] 27 - 31 January 2014

by Kugan

== Progress == * 4 Day week (Monday Public Holiday) (6/10) * Posted patches for bugs assigned https://sourceware.org/ml/binutils/2014-01/msg00332.html http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60034 http://gcc.gnu.org/ml/gcc-patches/2014-02/msg00048.html * TARGET_ATOMIC_ASSIGN_EXPAND_FENV implementation (2/10) Looked at glibc implementations of required functionality == Plan == * Finish TARGET_ATOMIC_ASSIGN_EXPAND_FENV implementation * Follow up on patches if required

11 years, 3 months

1
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[Activity] Jan 27-Feb 2

by Rob Savoye

== Progress == * Got binary release building working again. (2/10) * Added a node_selector to Jenkins for the new Beagle Board Blacks, and get those working for native builds. (TCWG-379, 1/10) * Fix configuration of 'build-all' project in Jenkins, now fires up cross builds for supported targets, plus native builds on Chromebooks and Beagle Board Blacks. (1/10) make networking route externally. (TCWG-380) * Meetings and Misc. (3/10) * Got TCWG build farm, all nodes offline fixed. * Wrote wiki page on the build farm. * Updated Java to 1.6 on the Beagle Board Blacks in the TCWG build farm. * Added support to specify an alternate prefix for installation. * Got QEMU and Foundation Model running on TCWG x86_64 build slaves so Jenkins can use them for native builds. (TCWG-380 - 2/10) * Got Rasberry PI softfp image running under QEMU, tried to do build. (TCWG-380 - 1/10) == Plan == * Build static gdbserver for target via Cbuildv2. * Add Win32 installer for Canadian cross built binary releases to Cbuildv2. * Get Kugan's benchmark branch running on build farm. * More Jenkins maintainance. == Potential Leave == * Still working out the huge amount of details, but strongly considering going to Mt Everest after Connect. It'd be a long and rough trip, but a once in a lifetime opportunity.

11 years, 3 months

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[Weekly] 26-31 JAN 2014

by Michael Collison

== This week == - Successfully submitted crypto using git-review - Completed merge of ILP backports from trunk to Linaro 4.8 branch: 201164, 201165, 201166, 201167, 201168, 201170 and 201175 - Attended ARM architecture training on Friday == Next week == - Submit ILP backports for review using git review - New backports == Future ==

11 years, 3 months

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[ACTIVITY] 27 - 31 January 2014

by Will Newton

== Progress == * Rework QEMU patch for AArch32 ARMv8 16<->64bit VCVT (2/10, TCWG-51) * Further work on longjmp/setjmp Systemtap probes on ARM (4/10, TCWG-378) * Research and analysis of malloc workloads for benchmarking (4/10, TCWG-160) == Issues == * None == Plan == * Finish testing setjmp/longjmp changes * malloc benchmarking and improvements -- Will Newton Toolchain Working Group, Linaro

11 years, 3 months

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[ACTIVITY] Week 5

by Renato Golin

== Progress == * EHABI - Turning EHABI on by default on non-Darwin ARM - Had to add some relocations to MCJIT - Re-enabled EH tests on test-suite - Check-all, self-hosting and test-suite bots green * Compiler-RT - Enabling RT+San libraries to compile on ARM - Changing Clang to look for the generic libraries (arm, not armv7l) * MCJIT - Remote protocol fixed, all tests passing on self-hosting bot - All tests re-enabled on ARM * Background - More IAS, Compiler RT patch reviews - Buildbot cleaning up before every build (more stable) - Cambridge LLVM Social - Rumours that LLVM can compile the kernel with the integrated assembler on ARM * Time - CARD-862 8/10 - Others 2/10 == Plan == * FOSDEM - Talking about LLVM auto-vectorization this Sunday * EHABI - ARM detected some conflicts with Dwarf stack unwinding, investigate Compiler-RT - Run test-suite, benchmarks, applications with it * IAS - Confirm the rumours about the kernel compiling clean - Pick up some remaining task to implement

11 years, 3 months

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TARGET_ATOMIC_ASSIGN_EXPAND_FENV

by Kugan

I had a look at the missing target hook TARGET_ATOMIC_ASSIGN_EXPAND_FENV to fix the C11 memory model testcase in regressions in trunk. I looked at the x86 implementation of this target hooks and x86 has instructions (FNSTENV,FLDENV,FNSTSW,FNCLEX) for feholdexcept, feclearexcept and feupdateenv. Does ARM has something similar? Any pointers/links I can refer to. Please see the gcc internal documentation for the target hook below. — Target Hook: void TARGET_ATOMIC_ASSIGN_EXPAND_FENV (tree *hold, tree *clear, tree *update) ISO C11 requires atomic compound assignments that may raise floating-point exceptions to raise exceptions corresponding to the arithmetic operation whose result was successfully stored in a compare-and-exchange sequence. This requires code equivalent to calls to feholdexcept, feclearexcept and feupdateenv to be generated at appropriate points in the compare-and-exchange sequence. This hook should set *hold to an expression equivalent to the call to feholdexcept, *clear to an expression equivalent to the call to feclearexcept and *update to an expression equivalent to the call to feupdateenv. The three expressions are NULL_TREE on entry to the hook and may be left as NULL_TREE if no code is required in a particular place. The default implementation leaves all three expressions as NULL_TREE. The __atomic_feraiseexcept function from libatomic may be of use as part of the code generated in *update. Thanks, Kugan

11 years, 3 months

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[ACTIVITY] 20 - 24 January 2014

by Christophe Lyon

== Progress == - releases (3/10) * GCC 4.7 and 4.8 releases done * more cbuild2 feedback - cross-validations (2/10) * followup * adding capability to test a patch over a given revision on several targets/cpu/fpu/runtestflags - libsanitizer on AArch64 (3/10) * most tests are now functional * still some errors in the GCC testsuite, to be analyzed (there are some timeouts, too despite using SSH multiplexing to the Foundation model) - misc (2/10): conf-calls and meetings == Next == - libsanitizer on AArch64: analyze errors, try QEMU == Future == On sick leave starting Feb 11th

11 years, 3 months

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[Activity] 20 Jan - 24 Jan 2014

by Venkataramanan Kumar

== Progress == * Libc probes support for Aarch64 (2/10). Wrote a small patch for setjmp and longjmp LIBC probe. Requested "will newton" to test them . * Investigate "PGO" for Aarch64 (3/10). Bootstap testing GCC with PGO for GCC. Stage 2, feedback profile in progress. Ran coremark on foundation model with PGO. The benchmark builds with profile-generate and runs. "gcda" files are generated and uses them to profile. Profile generated runs does not run cleanly. Cross checking if the generated profile is valid. * Resubmmited libssp machine description support in GCC (2/10). * Cbuild2 discussed with rob, ryan on SYSROOT installation while building (1/10) cross compiler for aarch64. "SYSROOT" is expected to be in /opt/linaro, but cbuild2 does not do this by default. Misc (1/10) ------------- AMD internal meetings and did some investigations == Plan == - Run EMBCC benchmarks with -PGO enabled. - Follow up upstream libssp GCC discussions.

11 years, 3 months

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[ACTIVITY] Week 4

by Yvan Roux

* 4 days week (university). == Issues == * none == Progress == * LRA on AArch32: o TCWG-343 : Make LRA the default for the ARM backend (3/10) - Looking backend places (ARM and AArch64) where reload_in_progress is used to verify if lra_in_progress is needed as well: Tested lot of configurations, testsuite results analysis ongoing. o TCWG-345 : Analyse performance of LRA for ARM. (0/10) - No progress this week. * GMP library AArch64 port review: (4/10) o Analyzing code generated from C generic implementation vs assembly. * Misc. (1/10) o Various meetings. == Next == * Child care (chickenpox) * Still some time spend at university * Continue on LRA and lib GMP

11 years, 3 months

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[ACTIVITY] 20 - 24 January 2014

by Omair Javaid

== Progress == * Implemented per process hwbreakpoint and watchpoint cache for arm native targets. Also added a reference count for per thread hardware breaks. [TCWG-177] [7/10] * Travelled to Islamabad for Macau visa application. [3/10] == Plan == * Continue work on forking/vforking hardware breakpoints support for arm-native. Tweak hardware breakpoint cache and thread breaks reference count to get it in sync with linux-native. [TCWG-177]

11 years, 3 months

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[ACTIVITY] 20 - 24 January 2014

by Kugan

== Misc == - Monday 27/01/2014 - Public holiday == Progress == - LP#1191909: gold and -flto always fails with an internal error on arm-linux-gnueabi* (2/10) - Reproduced it and Looking into the implementation for best fix. -c11-atomic-exec-5.c (4/10) - Issue is due to missing target hook and looking at implementing -LP#1270789: gcc 4.8: "invalid expression as operand" in aarch64 inline asm (2/10) - came-up with the patch. Still in the process of testing it. APM1 disc seems to be corrupt and that is holding this. - Benchmarking (1/10) - added -pgo for coremark - Set-up a Linux desktop (1/10) == Plan == - Continue with trunk daily regression - Fix assigned bugs

11 years, 3 months

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[ACTIVITY] Week 04

by Zhenqiang Chen

== Issues == * None == Progress == * Investigate to duplicate shared compares to get more conditional compares. * Investigate to enable shrink-wrap for TARGET_APCS_FRAME. Still some ICE fails in regression tests. * Help on cbuilv2 eglibc multilib build issues. == Plans == * Tuning ccmp performance * Enable shrink-wrap for TARGET_APCS_FRAME. == Planed leaves == * Jan. 31 - Feb. 10.

11 years, 3 months

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[Activity] Jan 20-26

by Rob Savoye

== Progress == * Improve binary releases produced by Cbuildv2. (6/10 TCWG-383) * Minor changes to source releases produced by Cbuildv2. (1/10) * Added support to Cbuild to use lsbcc for binary releases. (1/10) * Meetings. (1/10) * Started reviewing Kugan's benchmarking branch of Cbuildv2. (1/10) == Plan == * Build static gdbserver for target via Cbuildv2. * Add Win32 installer for Canadian cross built binary releases to Cbuildv2. (TCWG-381) * Once Jenkins has a node_selector for the new Beagle Board Blacks, get those working for native builds. (TCWG-379) * Get QEMU and Foundation Model running on TCWG x86_64 build slaves so Jenkins can use them for native builds. (TCWG-380)

11 years, 3 months

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[ACTIVITY] 20 - 24 January 2014

by Will Newton

== Progress == * Add support for AArch32 ARMv8 16<->64bit VCVT to QEMU (2/10, TCWG-51) * Triage and report AArch64 gcc bug when building glibc with SystemTap (1/10) * Debug and submit patch for ARM libffi issue (1/10) * Add support for longjmp/setjmp Systemtap probes on ARM (4/10, TCWG-378) * Ported Python cffi package to AArch64, submitted upstream (1/10) * Fixed bug building glibc for armv4 (1/10) == Issues == * Broadband down for 3 hours on Wednesday afternoon == Plan == * Follow up QEMU patches and maybe post v2 * malloc -- Will Newton Toolchain Working Group, Linaro

11 years, 3 months

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[ACTIVITY] Week 4

by Renato Golin

== Progress == * Compiler-RT - Changing CMake to make it compile on ARM - Reviewing long div/mod patches for ARMv4/v5/v6, testing and benchmarking * EHABI - Investigating EH code generation (landing pads, jump tables, libs) - Running test-suite EH tests, some failures * Background - Loads of patch reviews on IAS, build attributes, EHABI, compiler-rt - Planning the 3.4.1 release (the first patch-release of LLVM) * Time - CARD-862 8/10 - Others 2/10 == Plan == * Continue EHABI tests, try to turn it on by default * Continue working on RT's CMake for ARM * Prepare the FOSDEM 14 presentation

11 years, 3 months

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[Weekly] 20-24 JAN 2014

by Michael Collison

== This week == - Completed merge of crypto backports from trunk to Linaro 4.8 branch: - 64-bit backports: 205092, 205383, 205384, 206114, 206115, 206117, 206118, 206149 - 32-bit backports: 206518 AND 206519 - Built and tested 32 and 64-bit compilers with crypto changes == Next week == - Submit backports for review using git review - New backports == Future ==

11 years, 3 months

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[ACTIVITY] Jan 20 - 24 - 2014

by Ryan Arnold

== Progress == Deferred US Holiday (MLK day) from Monday to Tuesday * Debugged what was thought to be a cbuild2 problem but ended up being due to default enablement of multilib in gcc. (2/10) * Started working on adding mulit-lib support to cbuild2 (minimal configuration for installing headers). (8/10) [Jira card forthcoming] - Moved kernel headers installation to arch based directory in sysroot and then symlinked appropriate host include directories to common arch directories. - Figured out how to build multilib arm libraries for arm-none-linux-gnueabihf and arm-none-linux-gnueabi. == Plan == * Add cbuild2 scripting to build multilib libraries based on gcc -print-multi-lib * Figure out how to get gcc to select the correct multilib headers directory so that we don't need a merged include directory. == Issues == * None

11 years, 3 months

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[ANNOUNCE] Linaro GCC 4.8 and 4.7 2014.01 released

by Christophe Lyon

The Linaro Toolchain Working Group is pleased to announce the release of both Linaro GCC 4.7 and Linaro GCC 4.8. As announced at Linaro Connect USA 2013 Linaro GCC is moving to a pattern of quarterly stable releases, with engineering releases in the intervening months. This is the first stable release, and contains no known regressions compared to the 2013.12 release. The next release of GCC 4.7 will be the 2014.04 stable release. There will be no engineering releases of GCC 4.7 in 2013.02 or 2013.03. The next stable release of GCC 4.8 will be the 2014.04 release. Next month's release - 2013.02 - will be an engineering build. Linaro GCC 4.7 2014.01 is the twenty second release in the 4.7 series. Based off the latest GCC 4.7.4+svn206380 release, this is the ninth release after entering maintenance. Interesting changes include: * Updates to GCC 4.7.4+svn206380 Linaro GCC 4.8 2014.01 is the tenth release in the 4.8 series. Based off the latest GCC 4.8.3+svn206350 release, it includes performance improvements and bug fixes. Interesting changes include: * Updates to GCC 4.8.3+svn206350 * Enhanced multilib support The source tarballs are available from: http://releases.linaro.org/14.01/components/toolchain/gcc-linaro/4.7 http://releases.linaro.org/14.01/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/4.7/4.7-2014.01 https://launchpad.net/gcc-linaro/4.8/4.8-2014.01 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

11 years, 3 months

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[Activity Jan 13-19

by Rob Savoye

== Progress == * Got got Beagle Board blacks up, installed all necessary dependencies to build toolchains. (TCWG-379 - 1/10) * Installed QEMU and Foundation model on all TCWG x86_64 build slaves. (TCWG-380 - 1/10) * Minor bug fixes for Cbuildv2 produced source tarballs to be hopefully now 100% match with what we usually release. (2/10) * More major bug fixes and some refactoring for Cbuildv2 produced binary tarballs to match with what we usually release. (3/10) * Meetings. (1/10) == Plan == * Build static gdbserver for target via Cbuildv2. * More work on binary tarball building. * Add Win32 installer for Canadian cross built binary releases to Cbuildv2. (TCWG-381) * Once Jenkins has a node_selector for the new Beagle Board Blacks, get those working for native builds. (TCWG-379) * Get QEMU and Foundation Model running on TCWG x86_64 build slaves so Jenkins can use them for native builds. (TCWG-380) == Issues == * I got invited to Mt Everest last week... :-)

11 years, 3 months

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[ACTIVITY] Week 3

by Yvan Roux

* 4 days week (still some times spent at university). == Issues == * none == Progress == * LRA on AArch32: o TCWG-343 : Make LRA the default for the ARM backend (3/10) - Most of the issues fixed or about to be fixed by Vladimir : * iWMMXT issue and Thumb1 udivmoddi4 : fixed. * Thumb1 code size issue : partial patch proposed. - Looking backend places (ARM and AArch64) where reload_in_progress is used to verify if lra_in_progress is needed as well. Validation ongoing. o TCWG-345 : Analyse performance of LRA for ARM. (0/10) - No progress this week. * Loop specialisation patch review: (1/10) o Sent feedback to Samsung. * 2014.01 release: (1/10) o Branch merge review * [Bug 1258013] Re: Cannot build arm64 kernel with CONFIG_DEBUG_INFO=y (1/10) o Issue due to a wrong .align directive in an assembly source file which is already fixed upstream. * GMP library sAArch64 port review: (1/10) o Started to review Anil work. * Misc. (1/10) o Various meetings. == Next == * Still some time spend at university * Continue on LRA and lib GMP.

11 years, 3 months

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[ACTIVITY] 13-17 January 2013

by Christophe Lyon

- 2014.01 releases: (2/10) * 4.7 ready, 4.8 needed a short daily to include our multilib patch to support our binary releases. * retried cbuildv2 and sent feedback. Should be mostly OK by now. - cross-validations: (2/10) * followup-up, bugzilla * thinking about short term Neon intrinsics testsuite use without dejagnu - libsanitizer (2/10) * resumed work for aarch64 - misc (2/10): conf-call and meetings - internal support (2/10) * issue: boards used for benchmarking have been off for several weeks. Pending jobs disappeared from the list, but I got no log.

11 years, 3 months

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[ACTIVITY] 13 - 17 January 2014

by Omair Javaid

== Progress == * Implement fork over HW breaks support for arm native targets. [TCWG-177] [6/10] * ARM Process Record: - All patches accepted and upstream. - Spent time making changes to VFP, SIMD etc patch. [2/10] - Configuration and Git ssh setup for gdb commit rights . [1/10] * Submitted a new fix and worked with community for the fix. [1/10] == Plan == * Continue to work on fork over HW breaks support for arm native targets. [TCWG-177] * Patch updates and submission to all in progress upstream submissions. * Travel to Islamabad for Macau visa application.

11 years, 3 months

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[Activity] 13 Jan - 17 Jan 2014

by Venkataramanan Kumar

== Progress == * Libc probes support for Aarch64. Testing the patch for "libc" probes support to "__longjump". Native compiling in openemebedded. Obtained a Linaro open embedded image with system tap enabled. Getting Assembler Error during "malloc" module linking in "glibc" configured with --enable-systemtap. In libc_mallopt invalid "asm", invalid expression as operand for LIBC_PROBE call. Cross compiling. Tried copying header files from system tap source to SYSROOT for cross compiling glibc. The cross compiled GCC does not recognize the header files. * Investigate "PGO" for Aarch64. Started bootstap testing GCC with PGO for GCC. Stage 1 completed. stage profile in progress. == Plan == - Run EMBCC benchmark with -PGO enabled. - Work on "glibc" probe. == Issues == Waiting for feedback on "libssp" machine descriptions changes. Misc ------ 14-Jan-2014 Local holiday.

11 years, 3 months

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[ACTIVITY] 13 - 17 January 2014

by Kugan

== Progress == - TLS GOT binutils patch and gcc fix for aarch64_build_constant are committed upstream. (1/10) - TCWG-360 (closed) (1/10) - TCWG-349 (closed) (4/10) - set-up trunk daily regression (4/10) - Resolved issues running address sanitiser with qemu - started running daily cross regression testing with qemu and native regression testing on chromebook. - Started analysing failures. == Plan == - Continue with trunk daily regression - Look at pending optimization cards

11 years, 3 months

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[ACTIVITY] Week 03

by Zhenqiang Chen

== Issues == * None. == Progress == * Test Linaro cbuildv2. - Write a reference script to support windows installer in cbuildv2. - Do some basic validation work against the binaries built from cbuildv2. * Reproduce and work out a patch for "ICE when building linux-linaro-tracking" (lp:1268893, PR59837) . * Test to merge Linaro local armv4t multilib patch to Linaro 4.8. * Investigate CCMP chance by taking a Bool_ var as var != 0. == Plans == * cbuildv2 validation * Tuning ccmp performance == Planed leaves == * Jan. 31 - Feb. 9.

11 years, 3 months

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[Weekly] 13-17 Jan 2014

by Michael Collison

== This week == - Completed merge of crypto backports 206128, 206130, 206131, 206132 and 206149 from trunk to Linaro 4.8 branch - Out sick Friday == Next week == - Build and test crypto backports - Begin merging aarch64 crypto backport to Linaro 4.8 branch == Future ==

11 years, 3 months

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[ACTIVITY] Week 3 (Jan 13-17 2014)

by Ryan Arnold

== Progress == * Cbuildv2 fix for *_release() functions which were changing out of the build directory but then not changing back to the builddir, which caused problems with paths relative to the builddir. (1/10) * TCWG-340 Enable Glibc remote testsuite integration - (7/10) - Working with upstream community on scoping and designing remote testsuite integration. - Setting up arm chroot environment on chromebook with documentation on how to make this reproduceable. * TCWG-352 AArch64 clone is missing some CFI markup - (2/10) - Setup aarch64 environment for testing and built static clone tests to test the patch. == Plan == * Start implementing (code) for glibc remote testsuite integration. == Issues == None

11 years, 3 months

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[ACTIVITY] Week 3

by Renato Golin

== Progress == * Buildbots - Odroid U2 died after a few days on USB stick, too. (I guess we're stuck with Chromebooks) - Upgrading chromebooks (to Saucy) due to a new GCC/libstdc++ 4.7+ restriction - Shuffling chromebooks, we now have three buildbots: - llvm-chrome-01: quick-build+check - llvm-chrome-02: self-host+check - llvm-chrome-03: test-suite * MCJIT Remote - Re-factored the communication protocol of MCJIT for remote processes - Still seeing one random failure on ARM, investigating * Compiler-rt - Investigating how to get it compiling all libraries and sanitizers on ARM * Background - Patch reviews, especially IAS and EH * Time - CARD-862 8/10 - Others 2/10 == Plan == * Continue MCJIT and Compiler-RT investigations * Continue reviewing IAS and EH patches * Try to run the EH tests on the test-suite with the current changes

11 years, 3 months

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[ACTIVITY] 13 - 17 January 2014

by Will Newton

== Progress == * Add support for AArch32 ARMv8 VRINT to QEMU (4/10, TCWG-50) * Add support for AArch32 ARMv8 VCVT to QEMU (4/10, TCWG-49) * Add support for AArch32 ARMv8 16<->64bit VCVT to QEMU (1/10, TCWG-51) * Fixed gas ARM VCVT encoding bug (1/10) == Issues == * None == Plan == * Complete outstanding QEMU work * ARM setjmp/longjmp SystemTap probes * malloc -- Will Newton Toolchain Working Group, Linaro

11 years, 3 months

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ICE when building linux-linaro-tracking

by Koen Kooi

Hi, I've been playing with linux-linaro-tracking and the 2013.12 (and 2013.10, 2013.11) toolchain release and when turning on the NEON in kernel option I get: CC lib/raid6/neon4.o lib/raid6/neon4.c: In function 'raid6_neon4_gen_syndrome_real': lib/raid6/neon4.c:113:1: internal compiler error: in dwarf2out_frame_debug_adjust_cfa, at dwarf2cfi.c:1078 } ^ Use the attached .txt as .config and do 'make zImage' to replicate the problem. You will probably need to attached patch as well since some of the linaro patches break namespace support :( regards, -- Koen Kooi Builds and Baselines | Release Manager Linaro.org | Open source software for ARM SoCs

11 years, 4 months

3
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[ACTIVITY] Week 2

by Yvan Roux

* Two days week (due to compilation courses given at university). == Issues == * none == Progress == * LRA on AArch32: o TCWG-343 : Make LRA the default for the ARM backend (1/10) - iWMMXT issue : back on the issue. - Thumb1 issues : looked at bugzilla's reports. o TCWG-345 : Analyse performance of LRA for ARM. (0/10) - No progress this week. * Loop specialization patch review: (1/10) o Back on the task. * [Bug 1258013] Re: Cannot build arm64 kernel with CONFIG_DEBUG_INFO=y (1/10) o Tried to reproduce the issue. * Misc. (1/10) o Catching up with email, etc o Meeting == Next == * Still some time spend at university * Continue the ongoing tasks. * Branch merge reviews.

11 years, 4 months

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[ACTIVITY] 6 - 10 January 2014

by Omair Javaid

== Progress == * ARM Process Record: - Follow up on patches, almost all patches accepted. [0.5/10] - Got GDB committ rights and set up git for pushing patches. [0.5/10] * Spent time to read through fortran functions prologue to find a new fix for TCWG-267. [1/10] * Initial investigation of handling breakpoint over fork [TCWG-177] [1/10] * Getting documentation ready for Macau visa application [2/10] == Plan == * Update and send patches where required and committ all approved patches. * Work on breakpoints issues [TCWG-177] and reverse stepping through solib issue [TCWG-315] * Apply for Macau visa, given all documents get ready.

11 years, 4 months

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[Activity] 06 Jan - 10 Jan 2014

by Venkataramanan Kumar

== Progress == * Libc probes support for Aarch64. Posted patch for "libc" probes support to "__longjump". Worked on review comments from Maintainers. Upstream discussions in progress. Working on testing "glibc" by using --enable-systemtap. * Experimented with "Cbuildv2" native building. == Plan == - Continue Cbuildv2. - Investigate "PGO" for Aarch64. - Work on "glibc" probe. == Issues == Waiting for feedback on "libssp" machine descriptions changes. misc === 14-Jan-2014 leave.

11 years, 4 months

1
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[ACTIVITY] 6-10 January 2014

by Kugan

== Progress == - Zero/sign extension elimination - experimented and discussed upstream. Still no confirmation (2/10) - Bug investigation LP1267122 and LP1263576 (6/10) - CBUILD2 Benchmarking (2/10) - More testing on chrome book == Plan == - Finish CBUILD2 Benchmarking - set-up trunk daily regression

11 years, 4 months

1
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[ACTIVITY] Week 2

by Zhenqiang Chen

== Issues == * None. == Progress == * Try cbuildv2 and compare the binaries with current releases. * Identify MULTIARCH_DIRNAME in trunk breaks aarch64 multiarch build. * Branch-cost tune for Cortex-M. == Plans == * Verify binaries built from cbuildv2 == Planed leaves == * Jan. 30 - Feb. 10.

11 years, 4 months

1
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[ACTIVITY] Week 1 - Jan 6 - 10

by Ryan Arnold

== Progress == * Draft wiki page (under ACL--let me know if you want to see) for instructions for setting up chroots on chromebooks for glibc testing: https://collaborate.linaro.org/display/~ryan.arnold@linaro.org/Configuring+… * Investigated expanding remote testing possibilities in glibc. * RFC email to libc-alpha discussing proposal for glibc host testsuite in chroots: https://sourceware.org/ml/libc-alpha/2014-01/msg00222.html == Issues == * Shortened week (3-days) because of unplanned school closures on Monday and Tuesday due to freezing temperatures, during which I had to watch my kids. == Plan == * Start code scaffolding for glibc host testsuite in chroot. * Start cbuild2 scaffolding for building remote chroots for glibc testing. * Add glibc multi-lib builds and IFUNC system libraries. * Work on cbuild2 support for local tar files.

11 years, 4 months

1
0
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[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 ==

11 years, 4 months

1
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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

11 years, 4 months

1
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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

11 years, 4 months

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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

11 years, 4 months

1
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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

11 years, 4 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

11 years, 4 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

11 years, 4 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

11 years, 4 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

11 years, 4 months

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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.

11 years, 4 months

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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.

11 years, 4 months

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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

11 years, 4 months

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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.

11 years, 4 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.

11 years, 4 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.

11 years, 4 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

11 years, 4 months

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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

11 years, 4 months

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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.

11 years, 4 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));

11 years, 4 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.

11 years, 4 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,

11 years, 4 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)

11 years, 4 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

11 years, 4 months

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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.

11 years, 4 months

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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

11 years, 4 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.

11 years, 4 months

2
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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

11 years, 4 months

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