- linaro-toolchain - lists.linaro.org

[ACTIVITY] 8 - 12 September 2014

by Will Newton

== Progress == * More work on malloc app benchmark framework (1/10, TCWG-441) - Postgres still has an issue with SELinux on Fedora... * Email, meetings, etc. (1/10) * Upstream work (3/10, CARD-341) - Patch review - Investigate glibc testsuite build failures on ARM * Investigate malloc single-thread optimizations (4/10, TCWG-436) - Atomics changes look like they will only help on AArch64 - Some improvements can be made to atomic code in general on ARM and AArch64 - Still need to look at locking * Peparing and packing for Connect (1/10) == Issues == * Electric/gas meter replacement and broken refrigerator consumed some time == Plan == * Linaro Connect -- Will Newton Toolchain Working Group, Linaro

10 years, 9 months

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[ANNOUNCE] Linaro GCC 4.9 2014.09 released

by Yvan Roux

The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2014.09 release of the Linaro GCC 4.9 source package. Linaro GCC 4.9 2014.08 is the sixth Linaro GCC source package release. It is based on FSF GCC 4.9.2-pre+svn214896 and includes performance improvements and bug fixes. With the imminent release of ARMv8 hardware and the recent release of the GCC 4.9 compiler the Linaro TCWG will be focusing on stabilization and performance of the compiler as the FSF GCC compiler. The Linaro TCWG provides stable[1] quarterly releases and monthly enginering[2] releases. Interesting changes in this GCC source package release include * Updates to GCC 4.9.2-pre+svn214896 * Backport of [AArch32] TARGET_ATOMIC_ASSIGN_EXPAND_FENV hook * Backport of [AArch32] Enable arm target in ira-shrinkwrap-prep* testcases * Backport of [AArch32] fix check_effective_target_arm_nothumb * Backport of Do not convert cast + __builtin_round into __builtin_lround unless -fno-math-errno is used * Backport of [AArch64] Fix Thumb2 testsuite fallout * Backport of [AArch64_be] Fix vec_select hi/lo mask confusions. * Backport of [AArch64_be] Don't fold reduction intrinsics * Backport of [AArch64] Fix offset glitch in load reg pair pattern * Backport of [AArch64][2/2] Add constrain to address offset in storewb_pair/loadwb_pair insns * Backport of [AArch64] Improve TARGET_LEGITIMIZE_ADDRESS_P hook * Backport of [AArch64] Removed unused get_lane and dup_lane builtins. * Backport of [sched-deps] Generalise usage of macro fusion to work on any two insns * Backport of [doc] Document clrsb optab and fix some inconsistencies * Backport of [AArch64] Some aarch64-builtins.c cleanup. * Backport of Guard transformation to lrint by -fno-math-errno * Backport of [AArch32] Adjust clz, rbit and rev patterns for -mrestrict-it * Backport of [AArch32/AArch64] Add CRC32 scheduling information to Cortex-A53 and Cortex-A57 * Backport of [AArch64] Use REG_P and CONST_INT_P instead of GET_CODE + comparison * Backport of [AArch64] Prefer dup to zip for vec_perm_const; enable dup for bigendian; * Backport of [AArch32] TARGET_ATOMIC_ASSIGN_EXPAND_FENV hook * Backport of [AArch64] Use MOVN to generate 64-bit negative immediates where sensible * Backport of [AArch64] Delete f_sels, f_seld types, use fcsel instead * Backport of PR target/60606 target/61330 fix ICE * Backport of [AArch64] PR target/63190 Feedback and Support Subscribe to the important Linaro mailing lists and join our IRC channels to stay on top of Linaro development. ** Linaro Toolchain Development "mailing list": http://lists.linaro.org/mailman/listinfo/linaro-toolchain ** Linaro Toolchain IRC channel on irc.freenode.net at @#linaro-tcwg@ * Bug reports should be filed in Launchpad against "Linaro GCC project": http://bugs.launchpad.net/gcc-linaro/+filebug. * Questions? "ask Linaro": http://ask.linaro.org/. * Interested in commercial support? inquire at "Linaro support":mailto: support(a)linaro.org [1] Stable source package releases are defined as releases where the full Linaro Toolchain validation plan is executed. [2] Engineering source package releases are defined as releases where the compiler is only put through unit-testing and full validation is not performed.

10 years, 9 months

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Weird problem building the 2014.08 toolchain in i686-lucid

by Bernhard Rosenkränzer

Hi, I'm having some very odd problems building the 2014.08 toolchain respin -- in the cbuild1 i686-lucid env, building glibc fails with [ERROR] ../sysdeps/unix/sysv/linux/bits/sched.h:127:14: error: variably modified '__bits' at file scope [ERROR] ../sysdeps/unix/sysv/linux/bits/sched.h:127:14: error: variably modified '__bits' at file scope [ERROR] ../sysdeps/unix/sysv/linux/bits/sigset.h:29:23: error: variably modified '__val' at file scope [ERROR] ../sysdeps/unix/sysv/linux/bits/sigset.h:29:23: error: variably modified '__val' at file scope [ERROR] ../misc/sys/select.h:69:15: error: variably modified 'fds_bits' at file scope [ERROR] ../misc/sys/select.h:69:15: error: variably modified 'fds_bits' at file scope [ERROR] /cbuild/slaves/oorts/crosstool-ng/builds/aarch64_be-linux-gnu-linux/install/aarch64_be-linux-gnu/libc/usr/include/linux/posix_types.h:25:16: error: variably modified 'fds_bits' at file scope [ERROR] /cbuild/slaves/oorts/crosstool-ng/builds/aarch64_be-linux-gnu-linux/install/aarch64_be-linux-gnu/libc/usr/include/asm/sigcontext.h:33:2: error: requested alignment is not a positive power of 2 [ERROR] /cbuild/slaves/oorts/crosstool-ng/builds/aarch64_be-linux-gnu-linux/install/aarch64_be-linux-gnu/libc/usr/include/asm/sigcontext.h:53:2: error: unknown type name '__uint128_t' [ERROR] /cbuild/slaves/oorts/crosstool-ng/builds/aarch64_be-linux-gnu-linux/install/aarch64_be-linux-gnu/libc/usr/include/linux/posix_types.h:25:16: error: variably modified 'fds_bits' at file scope [ERROR] /cbuild/slaves/oorts/crosstool-ng/builds/aarch64_be-linux-gnu-linux/install/aarch64_be-linux-gnu/libc/usr/include/asm/sigcontext.h:33:2: error: requested alignment is not a positive power of 2 [ERROR] /cbuild/slaves/oorts/crosstool-ng/builds/aarch64_be-linux-gnu-linux/install/aarch64_be-linux-gnu/libc/usr/include/asm/sigcontext.h:53:2: error: unknown type name '__uint128_t' [ERROR] ../ports/sysdeps/unix/sysv/linux/aarch64/sys/user.h:32:3: error: unknown type name '__uint128_t' [ERROR] ../ports/sysdeps/unix/sysv/linux/aarch64/sys/user.h:32:3: error: unknown type name '__uint128_t' (Yes, the fix is to get rid of cbuild1 and more importantly the requirement for 32-bit builds in a prehistoric environment - it builds just fine on 64-bit present-day boxes... But I don't think we want to make that change in a respin). The "variably modified" errors remain even after hardcoding typedef struct { __cpu_mask __bits[16]; } cpu_set_t; instead of relying on __CPU_SETSIZE and __NCPUBITS, and the line where it complains about alignment not being a positive power of 2 actually hardcodes an alignment of 16. Have you run into those before? ttyl bero

10 years, 9 months

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[ACTIVITY] 1 - 5 September 2014

by Omair Javaid

== Progress == Debug KGDB with gdb for testing [4/10] LCU14 slides preparation and study for presentation. [2/10] Miscellaneous [4/10] * Configure to use hackbox to test aarch64 gdb remote configs * Retrieve gdb test results in different configurations. * Emails/Patch scrolling/Meetings etc == Plan == patch updates and re submission. Figure ARM and AArch64 gdb missing features. Prepare and travel LCU14

10 years, 9 months

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[ACTIVITY] 1st - 4th September

by Bernie Ogden

=Progress= cbuild2 benchmarking - TCWG-360 [8/10] * Got an end-to-end run in my test environment * Patched tests to run more selectively (in review) Meetings/mail/etc - [2/10] =Plan= cbuild2 benchmarking: * Clean up some lose ends * Sort out source/results storage glibc: * Finish comments in lowlevellock.h (if time)

10 years, 9 months

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[ACTIVITY] Week 36

by Yvan Roux

4 days week. == Issues == * Unfortunate cbuild schroot-branch merge, silently brake the validation, and we had to revert a commit in our FSF repo. * aarch64 bare valdiation was broken all week, now workaround but it still have to be fixed. == Progress == * GCC 4.9 2014.09 (6/10) - Completed new backports. - Started FSF 4.9 branch merge for 2014.09 - Investigated validation breakages. * Misc: - Various meetings (2/10) == Next == - 4.9 2014.09 release. - Prepare LCU hacking session - Travel to CA

10 years, 9 months

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[Weekly] 01-05 SEPT 2014

by Michael Collison

== This week == * USA Holiday, Monday September 1st * TCWG-534 - Neon intrinsic testing part 8 (2/10) - Tested final eighteen neon intrinsics on ARM with no regressions identified - Unable to test on aarch64 due to test harness issues * Linaro Bugzilla 331 - [4.9 Regression] ICE in final_scan_insn, at final.c:2952 (aarch64-linux-gnu) (2/10) - Bug fix investigation * Launchpad 1312931- gcc 4.8 internal compiler error: in add_stores, at var-tracking.c (2/10) - validation test results review and code review submission * Misc. (2/10) - Linaro Connect presentation finalization and conference call - 1:1 with Christophe == Next week == - Complete Neon intrinsic testing on Aarch64 - Identify bug fix for Linaro Bugzilla 331 - Investigate failures identified in Neon intrinsic testing

10 years, 9 months

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[ACTIVITY] 1-5 September 2014

by Venkataramanan Kumar

== Progress == * TCWG-181 - Bench marking core mark with LTO (2/10) Measured -O3 -flto vs -O3 on Aarch64 machine with Linaro GCC and Trunk FSF GCC on Aarch64 and X86_64. Performance in both cases seems to be same level. Planning to remeasure in trunk now. * TCWG-531 Fix invalid use of vector register (3/10). Completed fixing. patch tested on Aarch64 machine and up streamed the patch to FSF trunk. * TCWG-532 Fix abinit fails to build on AArch64 (2/10) Bug does not appear in trunk. Case of missing back port. Did git bisect experiments in trunk and found that r213078 solves the problem. Case of code generation for loading labels at -O0 getting fixed after changes to IRA register class. * Cbuildv2 preparation for hack session in LCU14.(1/10) * Others (2/10) * Meetings Christophe, Ryan, Maxim and GCC status meeting * Misc and internal meeting. * Cbuildv2 preparation for hack session in LCU14. == Plan == * Continue testing fix for TCWG-532 * Continue backport fix for TCWG-531. * Continue Benchmark Core mark with LTO (TCWG-181). * TCWG-533 Creating scripting to run git bisect with cbuild2. * Cbuildv2 preparation for hack session in LCU14.

10 years, 9 months

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[ACTIVITY] 1 - 5 September 2014

by Kugan

== Progress == * Regression on alphaev68-linux-gnu due to uxt/sxt commit (6/10) - posted patch for promoted type based VRP after fixing issues found in bootstrapping and regression testing. But had to drop this as this might have performance implications. https://gcc.gnu.org/ml/gcc-patches/2014-09/msg00288.html - Proposed setting a flag to indicating overflow/wrap so that we can remove uxt/sxt safely. * Preparation for connect hacking session (2/10) - Started with materials for the discussions. * misc (2/10) - Visa - Meetings == Issues == - Value range data generated by VRP is not reliable for uxt/sxt removal as wrapping/overflow is not propagated. - Patch for Calculating range in promoted type is rejected - Proposed propagating additional flag (with some tweaking to preserve size) so that this information is available at the time we deicide on uxt/sxt redundancy - If this cannot be agreed, this patch has to be reverted == Plan == * finalize overflow/wrap propagation * prepare for connect

10 years, 9 months

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[ACTIVITY] 1 - 5 September 2014

by Will Newton

== Progress == * Email, meetings, etc. (1/10) * Upstream work (1/10, CARD-341) - Patch review * LCU14 slides and review (4/10) * More work on malloc app benchmark framework (4/10, TCWG-441) - Ironed out a few bugs and sources of noise - Still need to find a broader range of workloads == Issues == * None == Plan == * Look into malloc single thread optimization patches situation * Find more workloads to add to malloc benchmarks -- Will Newton Toolchain Working Group, Linaro

10 years, 10 months

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[ACTIVITY] Week 36

by Renato Golin

== Progress == * Automation Framework (CARD-1378 2/10) - Configuring D01s into a three-schroot box - Turned out unstable, reverting to 4-core setup * Toolchain (CARD-862 0/10) - Re-committed vectorizer patch with MSVC2012-friendly code * LLVM 3.5 Release (TCWG-476 1/10) - Final release out, all done * Buildbots (TCWG-76 4/10) - Adding support for CMake on buildbot Zorg's interface - Making the CMake builds test without NEON - Created a compiler-rt bot, found some bugs, investigating - Submitting changes upstream, will be up soon * Background (3/10) - Code review, meetings, discussions, etc. - Presentations (Connect, LPC) == Plan == * Migrate stack unwinding to VFP for ARMv7+ in compiler-rt * Start implementing fpu stuff in assembler (parser/attributes) * Finish LPC presentations

10 years, 10 months

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[ACTIVITY] 1-5 September 2014

by Christophe Lyon

== Progress == * GCC trunk/4.9 cross-validation (1/10) - monitoring results - noticed failures on newly introduced tests when running on armeb. Kyrill will fix his tests. * bug #306 (bootstrap failure on i686) (1/10) - unable to reproduce it * AArch64 libsanitizer (3/10) - asan and most of ubsan tests now pass - submitted a gcc patch to enable it - thread sanitizer does not work yet * Neon intrinsic tests (1/10) - ran the whole testsuite on aarch64* and arm* targets on gcc trunk - reported an ICE on aarch64*; was a duplicated, fixed today by Carrot - there are still several tests failing at runtime, need time to reduce the testcases * Misc (conf calls, meetings, ...) (4/10) - usual 1:1 and team calls - bugzilla management == Next == * GCC trunk/4.9 cross-validation monitoring * AArch64 thread sanitizer * Neon intrinsic tests * Connect preparation (hacking sessions)

10 years, 10 months

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LLVM 3.5.0 Release

by Renato Golin

Folks, Clang+LLVM 3.5.0 was released yesterday (3rd Sep) and Linaro, as usual, have tested both ARM and AArch64 native builds. This is a major milestone for LLVM on ARM/AArch64, please read the release notes to find out more. http://llvm.org/releases/3.5.0/docs/ReleaseNotes.html You can download the native ARM binaries (and sources) at: http://llvm.org/releases/download.html#3.5.0 Since LLVM is natively a cross-compiler, you can download the binary to your host platform and compile to ARM or AArch64, but you'll need extra tools (linker, libc, etc). The main changes are: * EHABI is now enabled by default and it's compatible with both gcc_eh and libc++abi unwinding libraries. * The integrated assembler has got a complete makeover and is now enabled by default on ARM and AArch64. It supports most of what GCC produces and a good part of the hand-coded assembly we've seen in the wild. Please report bugs! * The current AArch64 back-end is the resulting of a merge between the existing back-end with Apple's own private back-end (that they open sourced). It's faster and as stable as the previous and has been further improved since the merge. * Compiler-RT has been integrated to the ARM/AArch64 CMake build, including the sanitizers, though the resulting quality is still beta. Please report bugs! This is the first time that Linaro has produced binaries for both ARM and AArch64 and we'll continue to do so for all major and minor releases from now on. If there is any patch on trunk for ARM/AArch64 that you need back-ported to 3.5.1 (and beyond), please let us know. Feedback and Support Subscribe to the important Linaro mailing lists and join our IRC channels to stay on top of Linaro development. ** Linaro Toolchain Development "mailing list": http://lists.linaro.org/mailman/listinfo/linaro-toolchain ** Linaro Toolchain IRC channel on irc.freenode.net at @#linaro-tcwg@ * Bug reports should be filed in LLVM's bugzilla: http://www.llvm.org/bugs/ * Questions? "ask Linaro": http://ask.linaro.org/. * Interested in commercial support? Inquire at "Linaro support":mailto: support(a)linaro.org Regards, --renato

10 years, 10 months

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Re: [TCWG] American culture before LCU'14

by Rob Savoye

On 09/02/2014 01:36 PM, Renato Golin wrote: > Plus, the American culture that I like the most is steak. And bacon. I > think I'll pass. I won't be making it either. Around here, American culture is called the Rodeo. :-) - rob -

10 years, 10 months

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[ACTIVITY] 25 - 29 August 2014

by Omair Javaid

== Progress == Arm gdb record-replay pending patches up-streaming [3/10] * Update, test and resubmit patches AArch64 gdb record-replay patches up-streaming [3/10] * Update, test and resubmit patches Miscellaneous [4/10] * Configure git for replying to previous patch submission using send email. * PERF try out on chromebook * Update record-replay slides and debug using cdt integration. * Emails/Patch scrolling/Meetings etc == Plan == Up-streaming of all pending patches after updates. GDB Tracepoints/Fast Tracepoints support on arm [TCWG-480] LCU14 slides preparation and study for presentation.

10 years, 10 months

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[Weekly] 25-29 AUG 2014

by Michael Collison

== This week == * TCWG-515 - Neon intrinsic testing part 1 (1/10) - Completed testing on ARM targets - Identified failure on vclz intrinsic at all optimization levels * TCWG-524 - Neon intrinsic testing part 4 (1/10) - Completed ARM testing with no regressions found * TCWG-525 - Neon intrinsic testing part 5 (1/10) - Completed ARM testing with no regressions found * TCWG-528 - Neon intrinsic testing part 6 (1/10) - Completed ARM testing with no regressions found * TCWG-529 - Neon intrinsic testing part 7 (1/10) - Completed ARM testing with no regressions found * Launchpad 1312931- gcc 4.8 internal compiler error: in add_stores, at var-tracking.c (2/10) - Resolved and tested on linaro 4.9 branch * Linaro Connect Presentation (2/10) - Completed "Optimization Levels" portion of presentatio * Misc. (2/10) - Launchpad to bugzilla transition - Conference calls with Ryan and Christophe * Issues - Delay in validating Launcpad 1312931 due to SchrootFarm instability - Unable to issue code review on Gerrit after server upgrade == Next week == - USA Holiday, Monday, september 1s - Continue Neon intrinsic testing - Finalize Linaro Connect presentation - Bug fixing

10 years, 10 months

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[ACTIVITY] 25th - 29th August 2014

by Venkataramanan Kumar

== Progress == * TCWG-181 - Bench marking core mark with LTO (2/10) Measuring -O3 -flto vs -O3 on Aarch64 machine with Linaro GCC and Trunk FSF GCC. * TCWG-520 ICE in linaro compiler for ARMv7 target (4/10). Completed fixing. patch tested on schroot. Backported revision from trunk using gerrit and jenkins. upstreamed the patch. * Others (2/10) * Meetings Christophe, Ryan, Maxim and GCC status meeting * Misc and internal meeting. * Discussed with Yvan on using gerrit and backflip script. 4 day week, Friday 29/8 was holiday. == Plan == * Another Bug fixing task . * Continue Benchmark Core mark with LTO (TCWG-181). * Upstream patch review. * Cbuildv2 preparation for hack session in LCU14.

10 years, 10 months

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[ACTIVITY] 18 - 22 August 2014

by Kugan

== Progress == * Regression on alphaev68-linux-gnu due to uxt/sxt commit (7/10) - built cross alphaev68-linux-gnu and reproduces it with qemu. - Issue is due to PROMOTE_MODE definition and VRP truncating values. - discussed upstream and after a failed patch, it was suggested that the value ranges have to be calculated in promoted_mode precision. - Patch to do VRP in promoted_mode is in testing. There are few failures to fix. - An easier fix probably is to check the promoted mode against word_mode and disable uxt/sxt elimination. * TCWG-521 - Analysed Coremark and Spec2k for uxt/sxt optimizations TCWG-521(2/10) - Continue with Coremark and have additional patches in development for missing cases. * bswap pr43550 (No card yet) (1/10) - Finished regression testing. Will post the patch after resolving regression with alpha. == Paln == * Continue with VRP in promoted mode, TCWG-521 and bswap pr43550.

10 years, 10 months

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[ACTIVITY] Week 35

by Yvan Roux

== Issues == * Multiple validation infrastructure issues (gerrit/jenkins/git.linaro.org) now fixed. * aarch64-none-elf is now really long to complete (~11hrs) whereas it was less than 1hr last week. == Progress == * GCC 4.9 2014.09 (3/10) - Committed last week backports - More backports under validation - vca* intrinsics test are faiures analysis ongoing. * Misc - Linaro GCC git repo migration: (2/10) + Discussed and test the migration with Milo, we'll be ready to move the coming week. - Upstream bugzilla: (2/10) + Fixed PR 62248 : Configure error with --with-fpu=fp-armv8 - Linaro bugzilla: (1/10) + Fixed #562 : New tests failed on linaro 4_9 branch - Various meetings: (1/10) - Helped Venkat with backports (1/10) - launchpad bug migration duty. == Next == * Off on Monday * Complete backports. * Back on AArch64 libunwind * Prepare Connect Hacking session

10 years, 10 months

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[ACTIVITY] 25 - 29 August 2014

by Will Newton

== Progress == * Monday bank holiday (2/10) * Email, meetings, etc. (1/10) * Upstream work (1/10, CARD-341) - Patch review * Built releases of newlib, binutils and gdb for 2014.09 (2/10) * LCU14 research and slides (4/10) == Issues == * None == Plan == * Finish LCU slides * malloc benchmarking -- Will Newton Toolchain Working Group, Linaro

10 years, 10 months

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[ACTIVITY] 25-29 August 2014

by Christophe Lyon

== Progress == * GCC trunk/4.9 cross-validation (1/10) - checking results * bug #306 (bootstrap failure on i686) (3/10) - fixed an incorrect backport than made GCC build to fail in stage1 - now trying to reproduce the original bug reported * AArch64 libsanitizer (2/10) - resumed work, debugged sysroot / chroot problems with cbuild2 thanks to Maxim * Misc (conf calls, meetings, ...) (4/10) - usual 1:1 and team calls - wrote some doc for Wang == Next == * GCC trunk/4.9 cross-validation monitoring * bug #306 (bootstrap failure on i686) * AArch64 libsanitizer * Neon intrinsic tests

10 years, 10 months

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[ACTIVITY] Week 35

by Renato Golin

Public holiday + personal holiday (2 days) * Toolchain (CARD-862 0/10) - Proposing change on assembler behaviour (PR20757) * LLVM 3.5 Release (TCWG-476 1/6) - Another critical bug found, rolling RC4 * Background (5/6) - Code review, meetings, discussions, etc. - Presentations (Connect, LPC) - Test-suite buildbot failure investigation - Setting D01 16-core trick on LLVM boards == Plan == * Continue investigating the test-suite failure * Release 3.5 final * Enable D01s as buildbots * Have a look at assembler issues (parser, directives' behaviour)

10 years, 10 months

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[ACTIVITY] 18 - 22 August 2014

by Omair Javaid

== Progress == GDB Tracepoints/Fast Tracepoints support on arm [TCWG-480] [4/10] * FAST tracepoints try out on arm chromebook with trampoline code borrowed from kernel. AArch64 gdb record-replay bug fix [TCWG-503][TCWG-498] [2/10] * Debugging of issues Miscellaneous [4/10] * Reading on PreLink for LCU14 Presentation * Reading on PERF tools for LCU14 Presentation * LCU14 slides preparation. * Emails/Patch scrolling/Meetings etc == Plan == GDB Tracepoints/Fast Tracepoints support on arm [TCWG-480] Some progress on AArch64 gdb record-replay bug fix [TCWG-503] [TCWG-498] LCU14 slides preparation and study for presentation.

10 years, 10 months

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[ACTIVITY] 18 - 22 August 2014

by Will Newton

= Progress == * Upstream work (2/10, CARD-341) - Bug investigations - Applied a couple of patches * Booting upstream kernel on Chromebook (2/10) - Kernel booting and running - No builtin wifi but dongle works ok - Breakpoint issue fixed but the test still fails for some other reason, created upstream issue * Malloc application benchmarking (3/10, TCWG-441) - Various improvements of the scripts - Investigate benchmark variability in the presence of frequency scaling - Is it possible to get repeatable numbers on Intel i{7,5,3}? * Start looking at LCU session requirements (1/10) * Annual leave on Friday (2/10) == Issues == * None == Plan == * LCU session slides -- Will Newton Toolchain Working Group, Linaro

10 years, 10 months

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[ACTIVITY] 18th - 22nd August 2014

by Venkataramanan Kumar

== Progress == * TCWG-180 Debugging - LTO bootstrap failure in Aarch64 with GCC 4.9. (4/10) Completed. Patch that sets same tune parameters solves the bootstrap compare errors in Branch. Closed the JIRA cards. There are still LTO IR streaming issues in trunk which needs to tracked down and fixed at tree level. and no plans of doing that now. * TCWG-520 ICE in linaro compiler for ARMv7 target. Bisected the revision in trunk which fixes that. Backported and tested and fixes tha bug. (4/10) * Others (2/10) * Bug migration from launchpad * Meetings Christophe, Ryan, Maxim and GCC status meeting * Misc and internal meeting. * setup LLVM. == Plan == * Continue Bug fix (TCWG 520). * Benchmark Core mark with LTO (TCWG-181). * Upstream patch review. == MISC == * Local Holiday on 29th August

10 years, 10 months

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[ACTIVITY] Week 34

by Yvan Roux

4 Days week. == Issues == * none. == Progress == * GCC 4.9 2014.09 (8/10) - Prepared all remaining revisions to backport - Reviews done - Validation done - Reports analysis ongoing. - Some newly introduced intrinsics tests on vca* are failing, analyzing the issue. == Next == * Complete backports. * launchpad bugs migration.

10 years, 10 months

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[ACTIVITY] 18-22 August 2014

by Kugan

== Progress == * TCWG-413 - Release benchmarking (2/10) - Analysed all the patches gone into the release for performance impact * TCWG-521 - Analysed Coremark and Spec2k for uxt/sxt optimizations TCWG-521(3/10) - Studied Coremark and have additional patches in development for missing cases. * bswap pr43550 (No card yet) (3/10) - Looked at the pr and it is not fixable with VRP - An alternate approach based patch is in testing to fix this. * 1 day off Sick (2/10) == Paln == * Continue with TCWG-521 and bswap pr43550

10 years, 10 months

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[Weekly] 18-22 AUG 2014

by Michael Collison

== This week == * TCWG-515 - Neon intrinsic testing part 1 (1/10) - Attempting testing on ARM targets; resolving build failures * TCWG-524 - Neon intrinsic testing part 4 (2/10) - Completed AARCH64 testing with no regressions found * TCWG-525 - Neon intrinsic testing part 5 (2/10) - Completed AARCH64 testing with no regressions found * Launchpad 1312931- gcc 4.8 internal compiler error: in add_stores, at var-tracking.c (3/10) - Resolved, tested and requested code review on linaro 4.8 branch - Resolved and tested on linaro 4.9 branch. - Reviewing test results * Linaro Connect Presentation (2/10) - Met with Maxim and Will to prepare outline - Began writing "Optimization Levels" portion of presentation == Next week == - Continue Neon intrinsic testing including getting ARM portion to execute - Complete "Optimization Levels" portion of Linaro Connect presentation - Resolve Launchpad 1312931 on Linaro 4.9 branch

10 years, 10 months

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[ACTIVITY] 18-22 August 2014

by Christophe Lyon

== Progress == * GCC trunk/4.9 cross-validation (5/10) - analysed reports sent during my holidays - troubleshooting problems with the compute farm (semaphores exhaustion, spurious parallel make failures, ...) * 2014.09 release - reviewed backport requests * LCU14 preparation (slides) (1/10) * Misc (conf calls, meetings) (410) - usual 1:1 and team calls - bugzilla triage - launchpad - bugzilla migration == Next == * GCC trunk/4.9 cross-validation * bug #306 (bootstrap failure on i686) * AArch64 linsanitizer * Neon intrinsic tests * prepare documents for Wang

10 years, 10 months

1
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[ACTIVITY] Week 34

by Renato Golin

== Progress == * Automation Framework (CARD-1378 2/10) - Changing D01s to 16 cores with taskset + schroot * LLVM 3.5 Release (TCWG-476 2/10) - Broken compiler-rt div/mod backported to 3.5 rc3 - Tested and released RC3 (possibly the last) * Toolchain (CARD-862 2/10) - Found problems with .fpu/.cpu directives in GAS - Trying to find a fix and join with the fpu parsing fix in LLVM * Background (4/10) - Code review (lots!), meetings, discussions(lots!), etc. - Self-hosting broken badly, bisecting bootstraped problems is hard == Plan == * Continue discussions about asm directives, parsing * Continue investigating buildbot failure * Move bots to CMake, enable compiler-rt * LLVM/Android lightning talk * LPC: LLVM Toolchain presentation * Change compilation to make Clang/LLVM non-NEON by default * Enable D01s as buildbots

10 years, 10 months

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[ACTIVITY] 18th - 22nd August 2014

by Bernie Ogden

=Progress= cbuild2 benchmarking - TCWG-360 [5/10] * Proposed a plan for benchmark storage * A bit more thought on cross-running * Prototyped script to launch/run/release on LAVA targets (e.g. wg) ** The 'run' part is pretty much independent of the 'LAVA' part lowlevellock.h commentary - ???? [2/10] * In response to a patch review, added some comments to this fairly obscure file * Took longer than expected, but the end's in sight so I guess I'll finish * I know a bit more about futexes and threads now Meetings/mail/etc [3/10] =Plan= Holiday. Back on 1st September.

10 years, 10 months

1
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[ACTIVITY] 11 - 15 August 2014

by Omair Javaid

== Progress == Arm gdb record-replay bug fix [4/10] [TCWG-314] * Testing of all patches on x86 and arm machines. * Patch submission upstream after sync up with latest gdb trunk. AArch64 gdb record-replay bug fix [3/10] [TCWG-503][TCWG-498] * Debugging of testsuite failures with apm and foundation mode. * Patch series update after sync up with latest trunk. GDB Tracepoints/Fast Tracepoints support on arm [2/10] [TCWG-480] * Search for previously submitted patches, wiki info and other documentation. * Started with initial study and code understanding. Miscellaneous [1/10] * Research GDB record/replay usage scenarios. * Meetings/emails and installation/configurations etc == Plan == AArch64 gdb record-replay bug fix [TCWG-503][TCWG-498] * Fix test failures if possible otherwise submit updated patches. GDB Tracepoints/Fast Tracepoints support on arm [TCWG-480] * Further study and investigate a missing functionality on arm. Verify GDB non-stop debug support on ARM. [TCWG-246]

10 years, 10 months

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[ACTIVITY] 11 - 15 August 2014

by Kugan

== Progress == * Looked at implementation options for backlog cards and closed/postponed cards that doss not benefit or cards that require excessive re-architecture that will not be possible now. (5/10) - TCWG-468 - Postponed after detailed study and discussion. - TCWG-412 (Support literal/constant pool sharing (wont-fix): As it is, intra procedularl literal pool fix happens in TARGET_MACHINE_DEPENDENT_REORG with arm_reorg. It is quite complex and somewahat hacky. it would become even more messy if we are to record these information and reuse it for whole program as a way to share literal poool. Additionally A-profile (which is Linaro's focus) dosent benefit from this as we use movw/movt instead. Therefore decided to clsoe this as wont fix. * TCWG-413 - Release benchmarking (2/10) - Benchmarking or release for a15 and a57 * Analysed coremark and spec2k for uxt/sxt optimizations (3/11) - Studied coremark and have additional patches in development for missing cases. * Misc - Looked at bug database and monitored patches relevant to arm/aasrch64 == Paln == * Look at open uxt/sxt bugs in gcc bugzilla * Study coremark and then spec2k for uxt/sxt

10 years, 10 months

1
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[Activity] Aug 11-16

by Rob Savoye

== Progress == * Reviewed a big pile of benchmarking patches for cbuild2. (TCWG 1378 - 2/10). * Worked on stabilizing "Backport" Jenkins job (TCWG 1378 - 6/10). * Meetings and Misc (2/10) == Plan == * Keep tracking down Jenkins issues with Backport job. * Get my D01 board working finally, since I killed my Odroid U2. * Do more thorough testing of SSH performance improvements.

10 years, 10 months

1
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[ACTIVITY] 8th - 14th August 2014

by Bernie Ogden

=Progress= cbuild2 benchmarking - TCWG-360 [4/10] * Some disagreements with gerrit * One of my patches broke bare metal builds (now fixed) * More review of the way we store benchmark sources Other - [5/10] * Meetings, mail, etc (featuring newlib build options, defaults, cbuild vs benchmark scripts) * Learned to use git-send-email, bent it to my will * Authentication pain on ARM-side Holiday - [1/10] =Plan= cbuild2 benchmarking * Finish source/data storage plan * Figure out how benchmark cross-running will work, get started on it Holiday next week (25th - 29th August)

10 years, 10 months

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[Weekly] 11-15 AUG 2014

by Michael Collison

== This week == * TCWG-515 - Neon intrinsic testing part 1 (3/10) - Completed testing with internal compiler error discovered compiling with -Og and -g - GCC bugzilla report 62040 already exists for this issue * TCWG-518 - Neon intrinsic testing part 2 (2/10) - Completed testing with no regressions found * TCWG-519 - Neon intrinsic testing part 3 (2/10) - Completed testing with no regressions found * Reviewed branch merge of Linaro 4.8 and 4.9 with FSF trees (3/10] == Next week == * Continue with neon intrinsic testing * Investigate bug 373 - [gcc-4.9][android][armv8] internal compiler error * Develop outline for Linaro Connect presentation

10 years, 10 months

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[ACTIVITY] 8th - 14th August 2014

by Venkataramanan Kumar

== Progress == * TCWG-180 Debugging - LTO bootstrap failure in Aarch64 with GCC 4.9. (6/10) Analyzed tree dumps between stage2 and stage3 compilers. Noted that extra gimple declarations in stage2 compiler. Also inline minimum parameters in gimple.c.048i.inline were different. Richard Beiner found that way we hash the string literals was different between stage2 and stage3 compilers. Tested the patch, he posted on trunk but it does not solve the comparison failures. Also GCC garbage collector parameters for expansion and maximum heap size varies between stage 2 and stage3. Setting this parameters to same value in stage2 and stage3 builds fixes bootstrap failures in Aarch64. These fixes are for trunk and stage 1 5.0. Ref: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62077 Still need to find a work around for release branches Testing these patches on AMD64 /Aarch64 machines. * Others (2/10) * Upstream patch review. * 1-1 Meeting Christophe. * Misc and internal meeting. * setup LLVM. * Friday national holiday (2/10). == Plan == * Continue LTO bootstrap issue. * Benchmark Core mark with LTO. * Upstream patch review. == MISC == None .

10 years, 10 months

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[ACTIVITY] Week 31 - 32 - 33

by Yvan Roux

-------------------------------------------------------------------------------- Week 31 -------------------------------------------------------------------------------- Short week, one day off (2/10) == Issues == * none. == Progress == * Respinned Linaro GCC 4.9-2014.07 (1/10) * Linaro GCC 4.9 2014.08 (6/10) - Prepared backports for release (38 revisions) - validation on-going * Misc: (1/10) - Various meetings. -------------------------------------------------------------------------------- Week 32 -------------------------------------------------------------------------------- On vacation :) == Issues == * none. == Progress == * GCC 4.9 2014.08 (3/0) - Analysed backports validation results. - Committed all backports. -------------------------------------------------------------------------------- Week 33 -------------------------------------------------------------------------------- Still on vacation :) == Issues == * none. == Progress == * GCC 4.9 2014.08 (2/0) - Merged FSF 4.9 branch into Linaro one - Released 2014.08 source tarball * GCC 4.8 2014.08 (2/0) - Merged FSF 4.8 branch into Linaro one - Released 2014.08 source tarball == Next == * Back to work on Tuesday

10 years, 10 months

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[ANNOUNCE] Linaro GCC 4.9 and 4.8 2014.08 released

by Yvan Roux

The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2014.08 stable release of both Linaro GCC 4.9 and Linaro GCC 4.8 source package. With the imminent release of ARMv8 hardware and the recent release of the GCC 4.9 compiler the Linaro TCWG will be focusing on stabilization and performance of the compiler as the FSF GCC compiler. The Linaro TCWG provides stable[1] quarterly releases and monthly engineering[2] releases. Linaro GCC 4.9 2014.08 is the fifth Linaro GCC source package release and first stable one in the 4.9 series. It is based on FSF GCC 4.9.2-pre+svn213803 and includes performance improvements and bug fixes. Interesting changes in this GCC source package release include: * Updates to GCC 4.9.2-pre+svn213803 * Backport of [AArch64] Drop ISB after FPCR write. * Backport of [AArch64] Remove from arm_neon.h functions not in the spec * Backport of [AArch32] Fix check for __FAST_MATH in arm_neon.h * Backport of [AArch64] fix and enable non-const shuffle for bigendian using TBL instruction * Backport of [AArch64] Fix constraint vec_unpack_trunk * Backport of [AArch32] Cortex-A5 rtx costs table * Backport of [AArch32] Handle clz, rbit types in arm pipeline descriptions * Backport of [AArch64] Fix argument types for some high_lane* intrinsics implemented in assembly * Backport of [AArch64] Handle fcvta[su] and frint in RTX cost function * Backport of [AArch64] Prologue rewrite + performance. Linaro GCC 4.8 2014.08 is the fourteenth release in the 4.8 series and is in maintenance. Based off the latest GCC 4.8.4+svn213802 release, it includes performance improvements and bug fixes. Interesting changes in this GCC source package release include: * Updates to GCC 4.8.4+svn213802 * Backport of Fix [AArch32] for PR sanitizer/58543 * Backport of Fix [AArch64] for PR target/59744 Feedback and Support Subscribe to the important Linaro mailing lists and join our IRC channels to stay on top of Linaro development. ** Linaro Toolchain Development "mailing list": http://lists.linaro.org/mailman/listinfo/linaro-toolchain ** Linaro Toolchain IRC channel on irc.freenode.net at @#linaro-tcwg@ * Bug reports should be filed in Launchpad against "Linaro GCC project": http://bugs.launchpad.net/gcc-linaro/+filebug. * Questions? "ask Linaro": http://ask.linaro.org/. * Interested in commercial support? inquire at "Linaro support":mailto: support(a)linaro.org [1] Stable source package releases are defined as releases where the full Linaro Toolchain validation plan is executed. [2] Engineering source package releases are defined as releases where the compiler is only put through unit-testing and full validation is not performed.

10 years, 10 months

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[ACTIVITY] 11 - 15 August 2014

by Will Newton

= Progress == * Upstream work (4/10, CARD-341) - Patch review (gdb, binutils) - glibc testsuites for ARM and AArch64 * Booting upstream kernel on Chromebook (4/10) - Tried u-boot path but Google's shipped NV u-boot is broken in several ways - Fall back to trying to boot a signed upstream kernel - Gets halfway through boot then seems to turn the regulators off * Malloc application benchmarking (2/10, TCWG-441) - Add pdf library benchmark to benchmark suite - Improve argument parsing and result plotting - Seem to be hitting some new issue with mounting memory cgroup within docker == Issues == * None == Plan == * Iron out issues with malloc benchmark framework * Get Chromebook booting -- Will Newton Toolchain Working Group, Linaro

10 years, 10 months

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[ACTIVITY] Week 33

by Renato Golin

== Progress == * Benchmarks (CARD-716 2/10) - Wrapping up SPEC run, some results - Fix missing tests, running with -ffast-math * Toolchain (CARD-862 4/10) - A few more assembler fixes - http://llvm.org/PR20462 - http://llvm.org/PR20595 - Some vectorizer cleanups - http://llvm.org/PR20655 * Background (4/10) - Code review, meetings, discussions, etc. - Trying D01s again as buildbots == Plan == * Pick some more toolchain bugs to work on * Release 3.5 tests and benchmarks * Move bots to CMake, enable compiler-rt * Change compilation to make Clang/LLVM non-NEON by default * Enable D01s as buildbots

10 years, 10 months

1
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[ACTIVITY] Week 33

by Zhenqiang Chen

== Issues == * None. == Progress == * Update "Keep constants in register when expanding" patch according to comments (TCWG-486, 3/10). * Refine ccmp patches since the old ones can not apply (TCWG-488, 2/10). * Check PR62151, it was exposed by my commit r211885. But the root cause was r208165. * R/M toolchain related work (5/10) == Plans == * Ping pending patches. == Planed leaves == * Aug. 18 - 26.

10 years, 10 months

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configure: error: Link tests are not allowed after GCC_NO_EXECUTABLES

by Črt Gorup

Hi, I am trying to build a working environment with Angstrom Linux, QT5 for Toradex Apalis iMX6 module and additional QT5 SDK for my host machine. The compilation of Angstrom with additional QT5 layer went fine. However, there are some problems when building toolchain for the host machine (command meta-toolchain-qt5). It seems that there is a problem with configuration of linaro gcc runtime 4.8. The reported error is: "checking dynamic linker characteristics... configure: error: Link tests are not allowed after GCC_NO_EXECUTABLES". The log file is in the attachment. Does anyone have any idea how to fix this problem? I am using Ubuntu 14.04. Thanks in advance, Crt Gorup

10 years, 10 months

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Linaro arm-linux-gnueabihf-gdb versus Ubuntu gdb-multiarch

by ssinfod ssinfod

Hello, I'm trying to perform cross platform remote debugging from my x86 computer to a remote ARM device. (ex: Beagle Bone Black) I'm using Ubuntu 14.04 and Eclipse CDT. I installed the Ubuntu package gcc-arm-linux-gnueabihf but the gdb debugger is not in that package. Therefore, I'm wondering if I should use the Linaro toolchain (which include arm-linux-gnueabihf-gdb) or if I should install the Ubuntu gdb-multiarch package. What is the difference between gdb-multiarch and arm-linux-gnueabihf-gdb ? Is it better to use gdb-multiarch ? Thanks ssinfod

10 years, 10 months

3
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[ACTIVITY] 4 - 8 August 2014

by Omair Javaid

== Progress == BeagleBoard and Pandaboard setup for gdb testing [3/10] * Deployed debian linux on both boards * Installation of required packages for gdb testing * Run gdb native tests on Beagleboard, Pandaboard and Chromebook Arm gdb record-replay bug fix [6/10] [TCWG-314] * Applied previous asimd and vfp patches and test for failures * Fixed exception due to a bug in previous patches with latest trunk. * Fixed issues with solib trampoline code when stepping in reverse. Miscellaneous [1/10] * In pursuit of deploying linux on boards dd,ed my hard drive by accident and spent some time re-installing my desktop. == Plan == Arm record-replay bug fix [TCWG-314] * Test bug fixes with all previous patches and resubmit. Update and Submit Aarch64 record replay patches. Resume work on Aarch64 prologue analysis.

10 years, 10 months

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[ACTIVITY] 4th - 8th August 2014

by Bernie Ogden

=Progress= cbuild2 benchmarking- TCWG-360 [6/10] * Existed patches tidied up and gerritified * A few drive-by bugfixes * Cross-building support added and also gerritified lowlevellock patch [1/10] * Resubmitted bugfix, reacted to review * Some wrestling with space-mangling evil in mail clients Meetings/mail/etc [3/10] =Plan= Holiday Tuesday afternoon cbuild2 benchmarking * Get remote targets working * Maybe look at results gathering

10 years, 10 months

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[Weekly] 04-08 AUG 2014

by Michael Collison

== This week == * Linaro bugzilla 331 - [4.9 Regression] ICE in final_scan_insn, at final.c:2952 [4/10] - Triaged and investigating * Linaro bugzilla 307 - [Linaro 4.8] ICE in change_address_1, at emit-rtl.c:2019 [1/10] - Unable to validate. Further investigation before closing * TCWG-515 - Neon intrinsic bug testing [5/10] - Linaro Infrastructure headaches and setup. - May split into several blueprints targeting two to three tests - Require assistance debugging DejaGnu script error preventing some tests from running == Next week == - Continue with Neon intrinsic testing - Continue investigation into resolution for Linaro bugzilla 331

10 years, 10 months

1
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[ACTIVITY] Aug 4-10

by Rob Savoye

== Progress == * Fixed aarch64_be-none-elf builds and cross tests. (2/10) * Forked ancient RSH support in DejaGnu to be more SSH aware. SSH is now takes 1/4 of the time it used to for each remote execution test case. (TCWG 512 - 4/10) * Stabilized new ZSSH protocol in DejaGnu, also much faster than the current RSH/SSH support. (TCWG 512 - 3/10) * Meetings and Misc. (1/10) == Plan == * Get my D01 board working finally, since I killed my Odroid U2. * Review benchmarking patches. * Do more thorough testing of SSH performance improvements.

10 years, 10 months

1
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[ACTIVITY] 4 August - 8 August 2014

by Venkataramanan Kumar

== Progress == * TCWG-180 Debugging - LTO bootstrap failure in Aarch64 with GCC 4.9. (6/10) Tried to recompile object files that showed differences in GCC trunk on amd64 machine.It turned out that GCC make system always builds LTO files in “gcc” directory and uses prev-gcc/xg++ to build them. No differences when building stage2 and stage3 objects under same directory “gcc” in FSF trunk. Doing the same experiment with gcc 4.9 branch shows failure both in x86_64 and aarch64. Communicated the issue to Richard Beiner. Got some feedback on debugging from Honza and Richard. Tried passing –save-temps to BOOT_CFLAGS using FSF trunk, getting assembler errors. Need to come back to this problem after finding root cause. Read about LTO passes and wpa (partitioned ) vs non portioned mode. * Others (2/10) * Upstream patch review. * 1-1 Meeting Christophe. * Misc and internal meeting. * setup LLVM. * Friday off (2/10). == Plan == * Continue LTO bootstrap issue. * Benchmark Core mark with LTO. * Upstream patch review. == MISC == * National holiday on 15th August .

10 years, 10 months

2
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[ACTIVITY] 4 - 8 August 2014

by Kugan

== Progress == TCWG-445 - AArch64 does not generate post-decrement stores. * Issue resolved with Jiong's prologue/epilogue patch committed to trunk. * Closed the card. TCWG-291 - Zero/sign extensions (5/10) * More review and posted patch based on that which was accepted * Ran full set of validation (including s390x, aarch64 be, x86 and arm) * Committed two outstanding patches * Closed the card. TCWG-413 - Release benchmarking (2/10) * Benchmarking or release for a15 and a57 TCWG-468: Sha1 regress (2/10) * Experimented with back-end patterns. Not much improvement for the test-case. - Misc (1/10) * Looked at gcc bugs and closed old ones. * Posted test-case patch. == Plan == - Sha1 regressions - Fixing assigned Bugs

10 years, 10 months

1
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[ACTIVITY] Week 32

by Zhenqiang Chen

== Issue == * None. == Progress == * Refine and send the patch to fix pr61225 in Combine pass for review (2/10). * Send out the ARM backend patch to keep some constant in register (TCWG-486, 2/10). * Rebase and test ccmp related patches (TCWG-488, 2/10). * R/M toolchain related work (4/10). == Plans == * Ping pending patches. == Planed leaves == * Aug. 18 - 26.

10 years, 10 months

1
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[ACTIVITY] Week 32

by Renato Golin

* Benchmarks (CARD-716 3/10) - Working on Linaro's SPEC scripts for LLVM - Running SPEC2000 INT/FP (C/C++ only) on both ARMv7 and AArch64 - Re-writing some EEMBC scripts to be more stable - EEMBC reported some regressions from 3.4.2 - But still same when compared with GCC 4.8 (all in Jira) * Toolchain (CARD-862 3/10) - Fixing bugs in the assembler/libc++abi - http://llvm.org/PR20529 - http://llvm.org/PR20025 - Investigating other bugs in the assembler - http://llvm.org/PR18926 - http://llvm.org/PR20422 * LLVM 3.5 Release (TCWG-476 1/10) - Building and testing release candidate 2 * Background (3/10) - Code review, meetings, discussions, etc. - Buildbot failures - Plan for 2014 H2 - Basic LLD AArch64 support landed upstream == Plan == * Take actual holidays * Work on more assembler fixes * Finish SPEC runs, hopefully test last release candidate * Have a look at the bots, libraries, CMake, NEON, etc

10 years, 10 months

1
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[ACTIVITY] 4 - 8 August 2014

by Will Newton

== Progress == * Upstream work (2/10, CARD-341) - Patch review - Submitted a fix for armeb-eabi configurations of binutils - Tested and removed aarch64 lowlevellock.h - Tidied up glibc patchwork * Rewrote src-release as a shell script (4/10, TCWG-487) - Allows building releases as xz - 80% less evil than existing makefile * Booting upstream kernel on Chromebook (2/10) - Kernel configured and built - I think I have a plan... * Off Wednesday (2/10) == Issues == * None == Plan == * Upstream kernel on Chromebook * malloc app benchmarks * Potentially glibc 2.20 release week -- Will Newton Toolchain Working Group, Linaro

10 years, 10 months

1
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[ACTIVITY] 28 July - 1 August 2014

by Omair Javaid

== Progress == BeagleBoard and Pandaboard setup for gdb testing [1/10] * Got both alive and working with minimal os * Trying ubuntu prebuilt binaries didnt work. Out of office to get internet fixed and buy accessories for boards. [1/10] Eid Public Holidays in Pakistan from 29th July till 1st August [8/10] == Plan == BeagleBoard and Pandaboard setup * Get linux running on both boards * Run gdb test scripts on both boards * Compare test results outputs with chromebook and x86 Update and Submit Aarch64 record replay patches. Resume work on Aarch64 prologue analysis.

10 years, 11 months

1
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[ACTIVITY] 18 - 25 July 2014

by Omair Javaid

== Progress == GNU Tools Cauldron * Some useful corridor meetings with various GNU tools developers and maintainers. TCWG Sprint [8/10] * Got to meet the team and discuss TCWG roadmap. * Some useful howtos specially back porting and patch review howtos. * Sprint with ARM and useful discussions on gdb patch review. Return travel from UK on Friday 25th July.[2/10] == Plan == Get over travel fatigue and resume office. Get missing components and set up pandaboard and beagle board for gdb testing. Eid Public Holidays in Pakistan from 29th July till 1st August

10 years, 11 months

1
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[Activity] Mid July to now

by Rob Savoye

== Progress == * Installed dmucs on the TCWG build slaves, which works in DejaGnu to do cpu load based scheduling of executing cross tests remotely. (TCWG 511 - 4/10) * Spent some time trying to improve SSH performance for cross testing by opening the SSH connection via expect, and keeping it open. (TCWG 512 - 2/10) * Attended GNU Tools Cauldron and Linaro Sprint. (13/10) * Worked with Bernie on changes to the benchmarking branch. * Installed a Jenkins instance on my home server which uses my own build farm for testing Jenkins/Cbuildv2 changes without screwing up validation. (TCWG 1378 - 1/10) - Experimented with some new plugins that might be useful. (TCWG 1378 - 1/10) - Added command line options to jenkins.sh so it'll work on different Jenkins installations. * Fixed bare metal testing for arm*-none-eabi*. (2/10) * Fixed several Cbuildv2 bugs in bugzilla (TCWG 1378 - 2/10) - #167 - tcwgweb.sh not accurate. - #183 - cbuild2 configure --enable-bootstrap sets 'enable_bootstrap' not 'bootstrap'. - #249 - cbuild2.sh --help only works after configure is run * Reviewed and approved patches: - Add configure option to choose compiler languages - Enable parallelism by default - Add support for --march - Add support for --enable and --disable make_docs in configure and cbuild2.sh - lib/checkout.sh: Make checkout() dryrun safe when repodir doesn't yet exist - lib/stamp.sh: check_stamp() --force and --dryrun should return 1 - cbuild2.sh: Make --dump a do_ option so it's position doesn't matter - lib/make.sh: hello_world() will now return 1 if the compilation or link fails * Experiment with Docker to see if it has any advantages over a chroot, which it seems to. (2/10) * Refactor building binary tarballs. Now it doesn't run the test first, it assumes the branch has already been validated. (2/10) * Fix aach64_be-none-elf builds. == Plan == * Fix current breakage in cbuild2/master. * Get back to SSH performance improvements (TCWG 512). * Get my D01 board working finally, since I killed my Odroid U2. * Work through more cbuildv2 bug reports (TCWG 1378). == Issues == * Sorry, several weeks of status in one activity report, I need to get back to doing these weekly...

10 years, 11 months

1
0
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[ACTIVITY] 28 July - 1 August 2014

by Kugan

== Progress == - Travelling from TCWG sprint (2/10) - Zero/sign extension elimination (TCWG-291) 2/10 * Posted the modified patch and some discussions. Further testing. -SHA1 regression (TCWG-468) 4/10 * Looked at IRA's uses of back end cost model. It might be a limitation (See the notes below). Looking at the test-case from sha1 which also has inline asm whose constraints are causing further issues. - Misc (2/10) * Looked at bugs assigned (https://bugs.linaro.org/show_bug.cgi?id=85) * Set-up LLVM == Plan == - Sha1 regressions - Fixing assigned Bugs --------------------------------------------------------------------- In AArch64, some of the integer operations support “w” constraint (FP_REGS). For example *addsi3_aarch64 pattern supports it. However, not all of the integer operations supports it. In the cases where it is supported, all the operands have to be in FP_REGS and it will not work if we have one operand in FP_REGS and other in GENERAL_REGS. If there is an allocno whose pseudo register is used only in *addsi3_aarch64 insns, it will have low cost for register class FP_REGS (as in the case of a28 below exacted from an example). If the other pseudo register used in *addsi3_aarch64 (a27 in the example below) is also used in instructions (rorsi3_insn in the exaple below) that does not support “w” constraint, there is going to be a cost involved in moving it from FP_REGS to GENERAL_REGS (or other way) Currently IRA dosent seems to be considering this dependency in considering this inter dependency in cost calculation.

10 years, 11 months

2
3
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[ACTIVITY] 28th July - 1st August 2014

by Bernie Ogden

=Progress= cbuild2 benchmarking - TCWG-360 [7/10] * Integrated benchmarking more into the core of cbuild2 * 'Audited' the benchmarks lying around on toolchain64 * Persuaded cbuild2 to use git-over-ssh Meetings/mail/etc [3/10] =Plan= cbuild2 benchmarking * Convert eembc integration into reviewable patches * Get cross-compilation working * Get remote targets working

10 years, 11 months

1
0
0 0

[ACTIVITY] 28 July - 1 August 2014

by Venkataramanan Kumar

== Progress == * TCWG-180 Debugging - LTO bootstrap failure in Aarch64 with GCC 4.9. (4/10) * TCWG-181 Rerun coremark with LTO on latest trunk and Linaro compilers. (1/10). * Others (3/10) * Upstream patch review. * Prepared and sent notes on cauldron. * 1-1 Meeting Christophe. * Misc and internal meeting. * setup LLVM. * Tuesday: Ramzan holiday (2/10). == Plan == * Continue LTO bootstrap issue. * Benchmark Core mark with LTO. * Upstream patch review. == MISC == * Leave on 8th August .

10 years, 11 months

1
0
0 0

[Weekly] 28 July - 1 August 2014

by Michael Collison

== This week == * Neon intrinsic testing (4/10) - Patched sources with Christophe's patches - Ran Neon intrinsic tests for vclz and vqadd - Investigating regressions * On leave Monday and Tuesday; out sick Wednesday (6/10) == Next week == * Continued Neon intrinsic testing

10 years, 11 months

1
0
0 0

[ACTIVITY] Week 31

by Zhenqiang Chen

== Issues == * None. == Progress == * Rework the patch to fix pr61225 in Combine pass. (4/10) * Investigate code-size regression when skipping arm_split_constant in expand (TCWG-486, 4/10). - For reg & 0xffff, zero_extendhi instruction is more efficient. - For "PLUS", the define_insn_and_split "*arm_addsi3" is only available when "reload_completed || !arm_eliminable_register (operands[1])". The cprop and combine passes can not recover it back when there is no chance to optimize the constant. * R/M toolchain related work (2/10). == Plans == * Send out the patches for review. * Refine ccmp related patches. == Planed leaves == * Aug. 18 - 22.

10 years, 11 months

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[ACTIVITY] Week 31

by Renato Golin

== Progress == * Toolchain (CARD-862 2/10) - Helping debug some sanitizer work - Re-evaluating compiler-rt on ARM with CMake * LLVM 3.5 Release (TCWG-476 2/10) - Working on SPEC to run with LLVM * Background (6/10) - Code review, meetings, discussions, patches, etc. - Email and patch backlog due to Cauldron and sprint - Investigating and fixing buildbot/build failures == Plan == * Finish SPEC-LLVM integration, run against 3.5 vs. 3.4.2 * Test Release Candidate 2, when it comes * Back to compiler-rt work...

10 years, 11 months

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[ACTIVITY] 28 July - 1 August 2014

by Will Newton

== Progress == * Various small tasks (3/10) - Catching up on email - Bug report investigations - Expenses from Cauldron/Sprint - Pushing patches - Tidy some JIRA cards * Investigated gdb testsuite failures on Chromebook (2/10) - Looks like a kernel issue, need to try a newer kernel on Chromebook * Investigated state of ARM and AArch64 glibc testsuites for 2.20 release (2/10) - Results look ok but a couple of things need investigation at some point * Triaged bugzilla bugs (1/10) * Built releases of binutils, eglibc and gdb for 2014.08 (2/10) == Issues == * None == Plan == * Get a newer kernel booting on Chromebook * Look at improving src-release for xz tarballs * Figure out what to do with glibc testsuite failures on AArch64 -- Will Newton Toolchain Working Group, Linaro

10 years, 11 months

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eglibc soft-float arguments

by Joel (Xi Zhou) Zhou

Hi guy, In order to have soft-float support in toolchain, I tried to build our toolchain using Linaro ct-ng script. I used "linaro-armeb-linux-gnueabihf" configuration then change floating point option from hard to soft. There is the error I have: [ERROR] /projects/broadcom-linux/joelz/r/linaro-gcc-build/.build/armeb-linux-gnueabi/build/gcc-core-shared/lib/gcc/armeb-linux-gnueabi/4.8.3/../../../../armeb-linux-gnueabi/bin/ld: error: /projects/broadcom-linux/joelz/r/linaro-gcc-build/.build/armeb-linux-gnueabi/build/gcc-core-shared/lib/gcc/armeb-linux-gnueabi/4.8.3/libgcc.a(bpabi.o) uses VFP register arguments, /projects/broadcom-linux/joelz/r/linaro-gcc-build/.build/armeb-linux-gnueabi/build/build-libc/elf/librtld.map.o does not For short, libgcc.a(bpabi.o) uses VFP register arguments, but librtld.map.o does not. The C library used is eglibc version (Linaro 2.19-2014.04), is this a way to make eglibc work with sfot-float? Thanks! Joel

10 years, 11 months

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No arm-eabi builds on latest Linaro Android 4.9 toolchain?

by 박주형

I was using arm-eabi builds on Linaro Android 4.9 toolchain 2014.06. I've just downloaded 2014.07 and found out there is not an arm-eabi toolchain. I need arm-eabi to build Linux kernels and arm-none-eabi toolchain from here: http://releases.linaro.org/14.07/components/toolchain/binaries/gcc-linaro-a… is not capable of building LTO kernels. Error pops up : "cc1: error: -fno-fat-lto-objects are supported only with linker plugin" TL;DR, I need arm-eabi builds from Linaro Android toolchains. arm-none-eabi builds are not built with linker plugin enabled.

10 years, 11 months

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[ACTIVITY] 28-31 July

by Christophe Lyon

Short week (Friday off) == Progress == * GCC trunk cross-validation (2/10) - catch up with backlog, reported newly introduced FAILs - analyzed logs of spurious failures, improved reporting of such cases - the script will know send a separate email with the svn ids it has selected for validation, to help fill the backports spreadsheet * Infrastructure (2/10) - started deployment of past releases to help us quickly reproduce/investigate bug reports - 14.* binary releases deployed on toolchain64 (/work/toolchains) - automation not yet possible because of problem with the lab internal squid proxy preventing the download of http://releases.linaro.org/14.07/components/toolchain/binaries for parsing - started deployment of past toolchains built from the source releases using cbuild2 but ran into build problems * Neon intrinsics tests (1/10) * Misc (conf calls, meetings) (3/10) - 1-1 calls to get feedback after Cauldron+Sprint - a bit of bugzilla triage - backports reviews for 14.08 release == Next == Holidays, back on Aug 18th

10 years, 11 months

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Linaro toolchain binary allowing soft-float?

by Joel (Xi Zhou) Zhou

Hi Linaro-toolchain team, I notice that the Linaro toolchain binary only support hard-float. We have a platform which is ARMv7 based does not support VFP. Could you generate toolchain binary for ARmv7 that allows soft-float? Thanks, Joel

10 years, 11 months

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[ACTIVITY] Week 28 - 29 - 30

by Yvan Roux

-------------------------------------------------------------------------------- Week 28 -------------------------------------------------------------------------------- == Issues == * none. == Progress == * TCWG-496 : Linaro GCC 4.9 2014.07 (7/10) - FSF branch merge. - Backports validation results gathering. * Misc: (3/10) - Various meetings. -------------------------------------------------------------------------------- Week 29 -------------------------------------------------------------------------------- == Issues == * none. == Progress == * TCWG-496 : Linaro GCC 4.9 2014.07 (7/10) - Compared all the validation results. - Released 2014.07. * Misc: (3/10) - Various meetings. - Travel to Cambridge -------------------------------------------------------------------------------- Week 30 -------------------------------------------------------------------------------- == Issues == * none. == Progress == * TCWG-496 : Linaro GCC 4.9 2014.07 (1/14) - Release had to be respinned. - Reverted unwanted backport. - Merged FSF 4.9 branch up to 4.9.1 release. * GNU Tools Cauldron (4/14) * Linaro TCWG sprint (7/14) * Travel (2/14) == Next == * Complete release respin * Prepare 4.9-2014.08 release (backports, ...).

10 years, 11 months

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[ANNOUNCE] Linaro GCC 4.9 2014.07-1 released

by Yvan Roux

The Linaro Toolchain Working Group (TCWG) announces the 2014.07-1 release of the Linaro GCC 4.9 source package. This is a respin of the 2014.07 release which contained a backport of a revision that is only relevant to trunk. Changes in this GCC source package release are: * Updates to GCC 4.9.1 (svn212635) * Revert backport of [AArch32] Fix PR target/61154. Please find the original 2014.07 release notes below: The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2014.07 stable release of the Linaro GCC 4.9 source package. Linaro GCC 4.9 2014.07 is the fourth Linaro GCC source package release in the 4.9 series. It is based on FSF GCC 4.9.1+svn212419 and includes performance improvements and bug fixes. With the imminent release of ARMv8 hardware and the recent release of the GCC 4.9 compiler the Linaro TCWG will be focusing on stabilization and performance of the compiler as the FSF GCC compiler approaches version 4.9.1. The Linaro TCWG will provide monthly stable[1] source package releases until FSF GCC 4.9.1 is released. At that point Linaro GCC 4.9 will merge in FSF GCC 4.9.1 and, release Linaro GCC 4.9.1, and then return to a schedule of stable quarterly releases and monthly engineering[2] releases. Interesting changes in this GCC source package release include: * Updates to GCC 4.9.1-pre+svn212419 * Backport of [AArch32] Wrap long literals in HOST_WIDE_INT_C in aarch-common.c * Backport of [AArch32] Rewrite TLC Intrinsics. * Backport of [AArch32] Remove vzip, vuzp, vtrn builtins and cleanup * Backport of [AArch32] Use enum name instead of integer value for PARAM_SCHED_PRESSURE_ALGORITHM. * Backport of [AArch32] Vectorise bswap* * Backport of [AArch32] Fix PR/61331 * Backport of [AArch32] Fix PR target/61154 * Backport of [AArch32] Use mov_imm type for movw operations consistently * Backport of [AArch32] Remove XFmode from ARM backend. * Backport of [AArch64] Rewrite REV Intrinsics. * Backport of [AArch64] Implement HARD_REGNO_CALLER_SAVE_MODE. * Backport of [AArch64] Support tail indirect function call. * Backport of [AArch64] Fix stack protector for ILP32 * Backport of [AArch64] ILP32 dynamic linker * Backport of [AArch64] Correct signedness of builtins, remove casts from arm_neon.h * Backport of [AArch64] clarify stack layout diagram * Backport of [AArch64] Implement movmem for the benefit of inline memcpy * Backport of [AArch64] Fix REG_CFA_RESTORE mode. * Backport of [AArch64] Fix layout of frame layout code. * Backport of [AArch64] Fix some reg-to-reg move scheduler types. * Backport of [AArch64] Implement CRC32 ACLE intrinsics + testsuite. * Backport of [AArch64] Implement ADD in vector registers for 32-bit scalar values. * Backport of [AArch32/AArch64] TARGET_ATOMIC_ASSIGN_EXPAND_FENV AArch64 * Backport of [AArch32/AArch64] Use signed chars in gcc.dg/pr60114.c. * Backport of [AArch32/AArch64] Rewrite UZP Intrinsics. * Backport of [AArch32/AArch64] Rewrite TRN Intrinsics. * Backport of [AArch32/AArch64] Rewrite EXT Intrinsics. * Backport of [genattrtab] Fix memory corruption, allocate enough memory for all bypassed reservations * Backport of Fix PR c/60114 Feedback and Support Subscribe to the important Linaro mailing lists and join our IRC channels to stay on top of Linaro development. ** Linaro Toolchain Development "mailing list": http://lists.linaro.org/mailman/listinfo/linaro-toolchain ** Linaro Toolchain IRC channel on irc.freenode.net at @#linaro-tcwg@ * Bug reports should be filed in Launchpad against "Linaro GCC project": http://bugs.launchpad.net/gcc-linaro/+filebug. * Questions? "ask Linaro": http://ask.linaro.org/. * Interested in commercial support? inquire at "Linaro support":mailto: support(a)linaro.org [1] Stable source package releases are defined as releases where the full Linaro Toolchain validation plan is executed. [2] Engineering source package releases are defined as releases where the compiler is only put through unit-testing and full validation is not performed.

10 years, 11 months

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[ACTIVITY] July 19th - 25th

by Bernie Ogden

=Progress= GNU Cauldron TCWG Sprint [8/10] * Really helpful to meet (almost) everybody * Some useful discussion, too memcpy on A15 - TCWG-390 [1/10] * Should have let this lie but I had an odd 1/2 day and some data begging to be looked at * Turned out I'd fat-fingered the wrong data * But I gained more evidence suggesting that cortex-strings benchmark is too noisy (Non-sprint) meetings/mail etc [1/10] =Plan= cbuild2 benchmarking * Fit what I have into Rob's worldview * Hopefully convert it into some reviewable patches Follow up on some notes from Cauldron, sprint

10 years, 11 months

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[ACTIVITY] Week 30

by Renato Golin

== Progress == * GNU Cauldron (4/10) - GCC+LLVM presentation had some positive reviews - Discussed sanitizers roadmap - Very interesting meeting with QuIC * TCWG Sprint (4/10) - Mostly about GNU tools - Team Mission streamlined, looking good - LLVM roadmap attracted some attention - We could have some bite-sized work from other team members? * Release 3.5 testing (TCWG-476 2/10) - No test regressions - Spotted some benchmark regressions - ARMv7 is overall the same on EEMBC - AArch64 is overall 10% faster on EEMBC * Weekend working, Friday off == Plan == * Release week! - Investigate 3.5 performance regressions on v7 - Work around the lack of perf on v8? - Run SPEC on both v7 and v8 and spot regressions

10 years, 11 months

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[Activity] 19-25 JULY 2014

by Venkataramanan Kumar

== Progress == * Attend GNU Cauldron. * TCWG Sprint (8/10) - Participated in Discussions about TCWG/GNU tools. - Partcipated in Discussions with ARM mainatiners. - Discussed about Connect plans. - LLVM status. - Attend Backport Demo by Yvan / some Bug fix Activity. * Friday off traveling back home (2/10) == Plan == * Continue LTO bootstrap issue * Benchmark Core mark with LTO * Upstream patch review. == Issues == * Large Memory Model put on hold now. * Waiting on ARM on Aarch64 SYS V ABI.

10 years, 11 months

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[Weekly] 21-25 JULY 2014

by Michael Collison

== This week == * TCWG Sprint (8/10) - Validation process greatly clarified including roadmap * Launchpad 1318831 - Invalid unpoisoning of stack redzones on ARM (2/10) - Finished validating and working thru git review isses with Launchpad == Next week == * Begin neon intrinsic testing * I will be off on Monday and Tuesday

10 years, 11 months

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help, here is a armV8 32bit question for linaro 4.8: the code I given below adopt sembedding ARMV8 assembly , but the compile result with Linaro GCC 4.8 aarch32 is not correct

by Panshilin (Peter)

Hi all concerned: this test code I given below: AARCH32 [https://email-cn04.huawei.com/owa/14.3.158.1/themes/base/pgrs-sm.gif] Test function[X][X] { volatile unsigned int val0 = 0; volatile unsigned int val1 = 0; asm volatile(“mrrc p15, 1, %0, %1, c15” : “=r”(val0), “=r”(val1)) val0 &= ~(1<<6); val1 &= ~(1<<6); asm volatile(“mcrr p15, 1, %0, %1, c15” : “=r”(val0), “=r”(val1)); } After compiling, the result is: mrrc 15, 1, r2, r3, cr15 str r2, [fp, #-28] str r3, [fp, #-24] ldr r3, [fp, #-28] bic r3, r3, #64; str r3, [fp, #-28] ldr r3, [fp, #-24] bic r3, r3, #64 str r3, [fp, #-24] mcrr 15, 1, r2, r3, cr15 obviously , it is not what I expect. I have val0 an vl1 two vars, but the compiling result is only one val takes effect. especia I have to mention is AARCH32. thanks. Peter

10 years, 11 months

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FW: Request received: accessing toolchain source releases - Member user

by Scott Douglass

Hi, Do you happen to know the answer to the git/svn questions below? Thanks. -----Original Message----- From: LDTS [mailto:support@linaro.zendesk.com] Sent: 25 July 2014 08:43 To: Scott Douglass Subject: Request received: accessing toolchain source releases - Member user Thank you for contacting Linaro. Your request (#927 <https://support.linaro.org/requests/927> ) has been received and is being reviewed by Linaro Developer Technical Support (LDTS). One of our Support agents will be in contact with you as soon as possible. If you would like our agent to contact you via phone, please include your phone number in the comments. To view your ticket and/or add additional comments, reply to this email or click the link below: http://support.linaro.org/requests/927 Scott Douglass Jul 25 16:43 Hi, I’ve been looking at https://wiki.linaro.org/WorkingGroups/ToolChain (https://wiki.linaro.org/WorkingGroups/ToolChain) and I see the Tree links that give me the git repository and commit id for the current releases of the toolchains (for example, 4.9-2014.06-1 => https://git.linaro.org/toolchain/gcc.git/commit/56d9fd9281e8cef3ea35b7d9ad8… (https://git.linaro.org/toolchain/gcc.git/commit/56d9fd9281e8cef3ea35b7d9ad8… My first question is: is there a straight-forward way (for example, a tag) to find the commit ids of older (4.9) releases? Or is searching the commit messages the best way? Also, is there svn access as well or just git access? (Git access is enough, but svn access would be slightly easier for me.) Also, I has a couple comments on that wiki page: It says “Pre-built versions that run on generic Linux or Windows are available at http://launchpad.net/linaro-toolchain-binaries.”, but it looks like the that Launchpad project is no longer being maintained (no 4.9 and no recent 4.8). Perhaps the wiki page should be updated (and the Launchpad description updated). The wiki page also links to https://wiki.linaro.org/Cycles/Next/Release/Status (https://wiki.linaro.org/Cycles/Next/Release/Status) which seems even more out-of-date than the Launchpad binaries; perhaps that link should be updated/removed, too. Thanks. -- IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. ARM Limited, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, Registered in England & Wales, Company No: 2557590 ARM Holdings plc, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, Registered in England & Wales, Company No: 2548782 ##- Please type your reply above this line -## Message-Id:5EV1YF0A_53d20a9134254_35e73f955b4b3338321343_sprut -- IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. ARM Limited, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, Registered in England & Wales, Company No: 2557590 ARM Holdings plc, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, Registered in England & Wales, Company No: 2548782

10 years, 11 months

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[ACTIVITY] 16 - 20 June

by Charles Baylis

* Linaro bugzilla #24 - [6/10] * investigating cause of ICE in Linaro 4.9 * PR61411 [1/10] * Committed patches for division (TCWG-???) and Neon address mode (TCWG-430) [1/10] * Admin [1/10] * Holiday [1/10]

10 years, 11 months

2
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VFP in BE mode - undefined instruction vstmia

by Joel (Xi Zhou) Zhou

Hi all, I'm working on booting Linaro LSK 3.10.40 kernel in be8 mode on our Cortex-A9 system. There is an issue related to VFP instruction. It complain "vstmia" is an undefined instruction. The VFP is supported in CPU and CONFIG_VFP and CONFIG_VFPv3 are enabled in kernel config. Are there any patch need to be done for VFP in BE mode? The booting log show as following: call sys_access(/init) Freeing unused kernel memory: 2832K (c0600000 - c08c4000) kernel_init: try to execute '/init' (ramdisk_execute_command) en->run_init_process(/init) init (1): undefined instruction: pc=0000aab8 Code: f00f dff8 2a20 1268 (acec) 108b Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000004 The disassembly code show the undefined instruction is "vstmia". armeb-linux-gnueabihf-objdump -D busybox_unstripped > busy.asm 0000aa90 <__sigsetjmp>: ... aab6: 6812 ldr r2, [r2, #0] aab8: ecac 8b10 vstmia ip!, {d8-d15} aabc: f412 7f00 tst.w r2, #512 ; 0x200 The rootfs is busybox 1.22.1 compiled by Linaro BE hard floating toolchain. https://releases.linaro.org/14.04/components/toolchain/binaries/gcc-linaro-… Thanks, Joel

10 years, 11 months

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[ACTIVITY] 14 - 18 July 2014

by Omair Javaid

== Progress == * On Holiday from 14th to 17th July 2014. * Travel to Cambridge to attend TCWG Sprint and GNU Tools Cauldron on Friday 18th July. == Plan == * Attend GNU Tools Cauldron 18th to 20th July. * Attend TCWG Sprint 21st to 24th July. * Friday 18th July return back after attending TCWG Sprint and GNU Tools Cauldron in UK.

10 years, 11 months

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[ACTIVITY] 7 - 11 July 2014

by Omair Javaid

== Progress == * Testing and Analysis of testsuite failures in arm-linux-gdb [TCWG-509] [6/10] -- Run ARM GDB testsuite on local chromebook, remote chrombook and pandaboards. -- Investigation of failures on arm. * AArch64 GDB handling of functions with empty prologue. [TCWG-504] [1/10] -- Short list aarch64 prologue skipping requirements. * Browsing gdb related upstream discussions and reviewing aarch64 regset rework stuff. [1/10] * Preparation for travel to UK, obtaining medical NOC document for international travel. [2/10] == Plan == * On Holiday from 14th to 17th July 2014. * Travel to Cambridge to attend Sprint and Cauldron.

10 years, 11 months

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[ACTIVITY] July 14th - 18th

by Bernie Ogden

=Progress= cbuild2 benchmarking - TCWG-360 [7/10] * Much fighting with benchmarking branch on a panda * Ported eembc benchmarking over to my way of doing things * A bit of cleanup around the 'reduce noise by shutting down services' stuff * Slew my ailing Ubuntu VM, started bringing up a beagle as a 2nd sacrificial target lowlevellock.h - TCWG-435 [1/10] * Roland patch review/thinking about how to test a corner case Meetings/mail/etc [2/10] =Plan= Cauldron/TCWG sprint Hopefully some cbuild2 benchmarking progress

10 years, 11 months

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[ACTIVITY] 14 - 18 July 2014

by Will Newton

== Progress == * Annual leave Monday to Wednesday (6/10) * Travel to Cauldron/Sprint (2/10) * Catching up on email, pushing patches, bugs etc. (2/10) == Issues == * None == Plan == * GNU Tools Cauldron * Toolchain Sprint -- Will Newton Toolchain Working Group, Linaro

10 years, 11 months

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[ANNOUNCE] Linaro GCC 4.9 2014.07 released

by Yvan Roux

The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2014.07 stable release of the Linaro GCC 4.9 source package. Linaro GCC 4.9 2014.07 is the fourth Linaro GCC source package release in the 4.9 series. It is based on FSF GCC 4.9.1+svn212419 and includes performance improvements and bug fixes. With the imminent release of ARMv8 hardware and the recent release of the GCC 4.9 compiler the Linaro TCWG will be focusing on stabilization and performance of the compiler as the FSF GCC compiler approaches version 4.9.1. The Linaro TCWG will provide monthly stable[1] source package releases until FSF GCC 4.9.1 is released. At that point Linaro GCC 4.9 will merge in FSF GCC 4.9.1 and, release Linaro GCC 4.9.1, and then return to a schedule of stable quarterly releases and monthly engineering[2] releases. Interesting changes in this GCC source package release include: * Updates to GCC 4.9.1-pre+svn212419 * Backport of [AArch32] Wrap long literals in HOST_WIDE_INT_C in aarch-common.c * Backport of [AArch32] Rewrite TLC Intrinsics. * Backport of [AArch32] Remove vzip, vuzp, vtrn builtins and cleanup * Backport of [AArch32] Use enum name instead of integer value for PARAM_SCHED_PRESSURE_ALGORITHM. * Backport of [AArch32] Vectorise bswap* * Backport of [AArch32] Fix PR/61331 * Backport of [AArch32] Fix PR target/61154 * Backport of [AArch32] Use mov_imm type for movw operations consistently * Backport of [AArch32] Remove XFmode from ARM backend. * Backport of [AArch64] Rewrite REV Intrinsics. * Backport of [AArch64] Implement HARD_REGNO_CALLER_SAVE_MODE. * Backport of [AArch64] Support tail indirect function call. * Backport of [AArch64] Fix stack protector for ILP32 * Backport of [AArch64] ILP32 dynamic linker * Backport of [AArch64] Correct signedness of builtins, remove casts from arm_neon.h * Backport of [AArch64] clarify stack layout diagram * Backport of [AArch64] Implement movmem for the benefit of inline memcpy * Backport of [AArch64] Fix REG_CFA_RESTORE mode. * Backport of [AArch64] Fix layout of frame layout code. * Backport of [AArch64] Fix some reg-to-reg move scheduler types. * Backport of [AArch64] Implement CRC32 ACLE intrinsics + testsuite. * Backport of [AArch64] Implement ADD in vector registers for 32-bit scalar values. * Backport of [AArch32/AArch64] TARGET_ATOMIC_ASSIGN_EXPAND_FENV AArch64 * Backport of [AArch32/AArch64] Use signed chars in gcc.dg/pr60114.c. * Backport of [AArch32/AArch64] Rewrite UZP Intrinsics. * Backport of [AArch32/AArch64] Rewrite TRN Intrinsics. * Backport of [AArch32/AArch64] Rewrite EXT Intrinsics. * Backport of [genattrtab] Fix memory corruption, allocate enough memory for all bypassed reservations * Backport of Fix PR c/60114 Feedback and Support Subscribe to the important Linaro mailing lists and join our IRC channels to stay on top of Linaro development. ** Linaro Toolchain Development "mailing list": http://lists.linaro.org/mailman/listinfo/linaro-toolchain ** Linaro Toolchain IRC channel on irc.freenode.net at @#linaro-tcwg@ * Bug reports should be filed in Launchpad against "Linaro GCC project": http://bugs.launchpad.net/gcc-linaro/+filebug. * Questions? "ask Linaro": http://ask.linaro.org/. * Interested in commercial support? inquire at "Linaro support":mailto: support(a)linaro.org [1] Stable source package releases are defined as releases where the full Linaro Toolchain validation plan is executed. [2] Engineering source package releases are defined as releases where the compiler is only put through unit-testing and full validation is not performed.

10 years, 11 months

1
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[ACTIVITY] 7 - 11 July 2014

by Will Newton

== Progress == * More work on launchpad bugs (3/10) - Moved gdb bugs over to bugzilla and closed down Launchpad tracker - Found secret location of Linaro eglibc bugs in Launchpad! - Triaged, moved, closed as many bugs as possible, some still remain * Respin of binutils 2.24 2014.07 release (1/10) * Get binutils ARM testsuite all passing on EABI, mostly on OABI (2/10) * glibc patch review and build warning fixes (2/10, CARD-341) * Annual leave on Friday (2/10) == Issues == * None == Plan == * 4 days in Berlin * Travel to Cauldron -- Will Newton Toolchain Working Group, Linaro

10 years, 11 months

1
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linaro prepackaged binary for aarch64 static libfdt.a?

by Claudio Fontana

Hello Will and list, do you have a prepackaged static libfdt.a for aarch64? I think it's part of some of the released images you provide, but maybe you have it also available as a single package? Thank you, Claudio

10 years, 11 months

2
1
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[ACTIVITY] July 7-13

by Maxim Kuvyrkov

== Week of July 7th == - Continued working on toolchain testing improvements (CARD-1378, 6/10) -- Further Jenkins fixes and improvements -- Various bits of build farm administration -- Investigated feasibility of [really] remote cross-testing -- yes, it is feasible! - STREAM performance regression (TCWG-388, 2/10) -- Resumed patch submission (now that testing is working much better) - Various meetings and discussions (2/10) -- Maxim Kuvyrkov www.linaro.org

10 years, 11 months

1
0
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[ACTIVITY] June 30-6

by Maxim Kuvyrkov

== Week of June 30th == - Continued working on toolchain testing improvements (CARD-1378, 6/10) -- Troubleshooted Jenkins jobs -- Various cbuild2 improvements - Migrated master VM of TCWG dev environment to AWS (2/10) -- It is now at tcwg-dev-env-master.linaro.org - Various meetings and discussions (2/10) -- Attempted to test QEMU's aarch32 crypto support -- Organized travel for GCC GSoC student to GNU Tools Cauldron. Thanks Linaro for providing sponsorship for this! -- Maxim Kuvyrkov www.linaro.org

10 years, 11 months

1
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[ACTIVITY] July 7th - 11th

by Bernie Ogden

=Progress= memcpy regression on A9 - TCWG-390 [6/10] * Not down to the branch predictor after all * Can be fixed for A9 with explicit pld, but this isn't free cbuild2 benchmarking - TCWG-360 [1/10] * Dug out my branch, merged in trunk, refreshed memory Meetings/mail/etc [3/10] * Including a little patch review for Roland's lowlevellock.h (TCWG-435) =Plan= Close TCWG-390 as wontfix Lots more cbuild2 benchmark automation Keep up with lowlevellock.h

10 years, 11 months

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[ACTIVITY] 07-11 JULY 2014

by Venkataramanan Kumar

== Progress == * Recovered from flu on leave 7th and 8th July (4/10) =LTO bootstrap -tcwg180 (2/10)= Git bisect experiments shows bootstrap compare errors apprearing and disappearing at trunk at different revisons. Alteast 3 revisons LTO bootstrap passes r210740 2488876068f541a341472c3aeedadccc255f0696 PASS r210854 271fe9cf111f6b581451bbfb4d346757877896cd PASS r210973 487fea840105dbb0ff516b797e7d86bea82ef74a PASS It is hard to do backport of revisons which fixes this bug. Need to discuss with LTO people in GCC mailing list =Reload spill fix -tcwg180 (2/10)= Emailed my status on benchmarking https://gcc.gnu.org/ml/gcc-patches/2014-07/msg00450.html This bug cannot be fixed without performance degradation. So if it cannot be up streamed, the reporter can use the patch to build his package atleast. Planning to close this bug if I did not receive any comments from maintainers. =Misc (2/10)= * GCC internal team meeting * Meeting with Ryan == Plan == * Benchmark coremark -O3 vs -O3 -flto. * Email to marcus on ABI for large memory model in Aarch64. * Cauldron preparation. == Planed leaves == * Jul 18- 25: Travel to Cambridge.

10 years, 11 months

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[ACTIVITY] 7-11 July 2014

by Kugan

== Progress == - 8th and 9th on holiday (4/10) - Zero/sign extension elimination (TCWG-291) 3/10 * Patch one is accepted * Posted the modified patch 2 after some discussions * Started analysing the code generated for coremark and spec2k * Looks there are more places that can be improved. I will post additional patches after completing it - Launchpad bugs (3/10) * https://bugs.launchpad.net/gcc-linaro/+bug/1320965 * https://bugs.launchpad.net/gcc-linaro/+bug/1331112 == Plan == - sha1 regressions - 15th and 16th on holiday

10 years, 11 months

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[ACTIVITY] Week 28

by Zhenqiang Chen

== Progress == * One day off. * Test and send out the local NLS patch for community review (1/10). * Test ccmp patches. Can not reproduce a FAIL in previous regression test with the latest trunk(TCWG-488, 1/10). * Test codes to skip arm_split_constant (TCWG-486, 3/10). Performance results seam OK for spec2000, coremark dhystone and eembc. * R/M toolchain related work (3/10). == Plans == * Ping pending patches. * Update ccmp patches. == Planed leaves == * Jul. 15 - 25: Travel to Cambridge. * Aug. 4 -8: Annual leaves.

10 years, 11 months

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[Weekly] 07-11 JULY 2014

by Michael Collison

== This week == Provide ldp/stp peephole optimization for Aarch64 [TCWG-446] [0/10] - Halted development due to duplicate ARM development project by Bin Cheng Launchpad 1318831 - Invalid unpoisoning of stack redzones on ARM [3/10] - Verifying test results Launchpad 1267761 - miscompilation of unsigned comparison on aarch64 [2/10] - Testing under way on Jenkins Neon intrinsic tests [4/10] - background work to gain familiarity with effort Misc Meetings [1/10] == Next week == - Verify testing on Launchpad 1267761 and 1318831 - Begin investigating compiler bugs discovered by neon intrinsic tests == Future ==

10 years, 11 months

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[ACTIVITY] 7-11 July 2014

by Christophe Lyon

== Progress == * GCC trunk cross-validation - reported a few regressions * Automation Framework (2/10) - looked at Jenkins configuration & logs of some failures * AArch64 libsanitizer (1/10) - tried to use cbuild2 in the lab to build & test on HW, but all my build attempts failed for various reasons * Neon intrinsics tests (3/10) - feedback from upstream requests some renaming changes + GNU coding style fixes - since reformating the existing testsuite is a manual and error-prone task, it will bring additional delay in improving GCC testsuite. - it's probably more efficient to run the existing tests regularly and start reporting & fixing the bugs identified, not waiting for the full conversion - updated the existing tests for fp16 and poly* types support with GCC (reference built with armcc) - interestingly, compiling the original testcases with armcc for aarch64 caused ICE on 28 source files. * Misc (meetings, conf-calls, ....) (4/10) == Next == Holidays for 2 weeks

10 years, 11 months

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[ACTIVITY] Week 28

by Renato Golin

== Progress == * Monday holiday * Automation Framework (CARD-1378 6/8) - TCWG D01 moved in, Chromebooks out - Movng LLVM buildbots to D01s - D01s have no NEON support... :S - We might have to move some Chromes back in - Moving hackboxes to Chromebook 2s * Background (2/8) - Code review, meetings, discussions, etc. == Plan == * Deal with NEON issue in the rack * Finish Cauldron presentation * Try to get the D01s as buildbots, even without NEON

10 years, 11 months

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[ACTIVITY] 30 June - 4 July 2014

by Omair Javaid

== Progress == * AArch64 GDB reverse watchpoints issue. [TCWG-503] [4/10] -- Found a new fix in generic process record implementation. Testing stalled by too many 2500 failures seen on arm-linux-gdb in general and some 850 record/replay implementation. * AArch64 GDB handling of functions with empty prologue. [TCWG-504] [4/10] -- Analysis of prologue generated by aarch64-gcc -- Make an understanding of code implementation for arm-linux-gdb. -- Try to reproduce reported bugs. * Testing and Analysis of testsuite failures in arm-linux-gdb [TCWG-509] [1/10] * Browsing gdb related upstream discussions. [1/10] == Plan == * AArch64 GDB reverse watchpoints issue. [TCWG-503] -- Test and submit fix for target record for the case where we cant step breakpoints. * Investigate issues in arm-linux-gdb testsuite results. [TCWG-509] * Travel preparations to UK for Tools cauldron and TCWG sprint. -- Obtain health certificate for international travelers. * On Holiday from 14th to 17th July 2014.

10 years, 12 months

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[ACTIVITY] June 30th - July 4th

by Bernie Ogden

=Progress= memcpy regression on A9 - TCWG-390 [7/10] * Tweaked bench.py some more * Cobbled together a bare metal version of cortex-strings benchmark * Was surprised to find that the problem does not relate to Linux * Have some evidence that points at the branch predictor Meetings/mail/etc [3/10] =Plan= See if A9 performance is recoverable without sacrificing other targets Push some of my improvements into the cortex-strings repo Possibly write up my cortex-strings-benchmarking-in-lava method Back to cbuild benchmark automation

10 years, 12 months

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[ACTIVITY] Week 27

by Yvan Roux

== Issues == * TCWG build machine disks start to be full. == Progress == * TCWG-496 : Linaro GCC 4.9 2014.07 (5/10) - Still worked on backports validation. - Manual/Jenkins/cbuildv2/schroot validation and results comparison. * Misc: (5/10) - Various meetings. - Office relocation == Next == * FSF branch merge for 2014.07 * Complete validation and backports.

10 years, 12 months

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[ACTIVITY] 30 June - 4 July 2014

by Kugan

== Progress == Zero/sign extension elimination (TCWG-291) 10/10 - Patch updated based on review comments. - Regression tested with standard set-up - Created test-cases. - Set-up additional architectures for validation * aarch64-none-elf --with-abi=ilp32 (Foundation model) * aarch64-none-linux-gnu --with-abi=ilp32 seems to be broken. * Set-up qemu based s390x-ibm-linux * Tried x86_64-linux -mx32 but ran into many issues. - Patch now waiting for s390x-ibm-linux. All others are OK. - will post once the results are available == Plan ==. - Spec2k regressions - sha1 regressions - 8th and 9th on holiday.

10 years, 12 months

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[Weekly] 30 JUNE -04 JULY 2014

by Michael Collison

== This week == Provide ldp/stp peephole optimization for Aarch64 [TCWG-446] [6/10] - Investigated options for improving ldp/stp pairing and developed patch - Testing underway Launchpad 1267761 - miscompilation of unsigned comparison on aarch64 [1/10] - Backported revision 206529 from trunk - Testing under way on Jenkins Launchpad 1296942 - marked fixed released based on backport by Yvan Roux [1/10] - July 4th holiday [2/10] == Next week == Complete testing on Launchpad 1267761 and TCWG-446 and initiate code review == Future == Travel to Cambridge on July 11th for Cauldron and TCWG Spring

10 years, 12 months

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[ACTIVITY] Week 27

by Zhenqiang Chen

== Issue == * None. == Progress == * Enable binutils plugins for Linaro crosstool-ng samples (lp: 1335316). * Update ccmp patches (TCWG-488, 5/10) - Update two ccmp patches according to comments - Enhance the patch to handle cmov instructions. * Constant optimization (TCWG-486, 2/10): Logs show most negative constants used in logic operators (AND, IOR and XOR) are UNSIGNED before expand. * Loop2_invariant heuristics tune (TCWG-469, 1/10). Update and committed a patch @r212256. * R/M toolchain related work (2/10). == Plans == * Ping pending patches. * Continue on constant optimization.

10 years, 12 months

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[ACTIVITY] 30 June - 4 July 2014

by Christophe Lyon

== Progress == * Released gcc-linaro-4.7-2014.06 final (1/10) * GCC trunk / 4.9 branch (2/10) - reported regressions - tested a preprocessor patch from Dodji (after his previous version broke trunk build on ARM/AArch64*linux targets) - fixed bugs in comparison script * Neon intrinsics tests: (1/10) - handled feedback & resent updated patches - approved by Ramana for AArch32, waiting for AArch64 maintainer approval * cbuilvd1 scheduler (1/10) - restarted Calxedas - started looking at its implementation - removed some obsolete jobs * cbuildv2 / jenkins - cloned Schroot project to benefit from its stability and use the same build matrix as BuildFarm * Misc (mettings, conf calls) (3/10) * Internal (meetings, office relocation) (2/10) == Next == * Neon intrinsics tests * AArch64 libsanitizer * GCC-trunk cross validation follow-up * cbuildv1 scheduler investigation and documentation == Future == * Holidays July 12th-27th

10 years, 12 months

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