- linaro-toolchain - lists.linaro.org

by Charles Baylis

== Progress == Closed bug #405 (not a bug) NEON load/store . reworked patches not to do type-punning [9/10] . investigated alternative ways to solve poor code generation with array of vector types Started investigating NEON bugs 403, 418 [1/10] == Plan == NEON load/store - submit new patches, continue upstream discussion Try out validation infrastructure for my own patches

10 years, 10 months

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[ACTIVITY] 29 September - 3 October 2014

by Christophe Lyon

== Progres == * GCC trunk/4.9 cross-validation (CARD-647) (3/10) - aarch64 address sanitizer tests currently all fail at execution under qemu because they try to reserve 50GB of memory. Tried to push the limits with no success so far. - working on fixing support for testcases generating a shared lib - newly introduced abi_check for aarch64 fails on my side, probable testsuite configuration problem. * Linaro branches - updated backports spreadsheet - reviewed backports prepared by Yvan * Validation (3/10) - manually running builds+validations to compare master and chroot branches, see the diffs between static and dynamic libs in terms of PASS/FAIL, .... * Neon intrinsics tests (1/10) - No need to comply to the GNU coding style since it's imported from and existing testsuite. - only minor changes requested - should help having the 1st subset committed soon * Misc (3/10) - calls/meetings - bugzilla admin etc..

10 years, 10 months

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[ACTIVITY] Week 40

by Renato Golin

== Progress == * Automation Framework (CARD-1378 5/10) - Broken Chromebooks in the lab - Setting up AMD machine - Setting up Juno boards * Background (5/10) - Code review, meetings, discussions, etc. - Writing LPC presentations - Broken buildbots == Plan == * Spend less time fiddling with hardware... * Fix the Compiler-RT buildbot * FPU parser (PR20787) * .fpu in assembler (PR20757) * -mpfu in driver (PR20700)

10 years, 10 months

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[PATCH 1/2] lib/make.sh: Add support for installing headers for i686 and x86_64

by Will Newton

--- lib/make.sh | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/lib/make.sh b/lib/make.sh index fb7137c..b917ece 100755 --- a/lib/make.sh +++ b/lib/make.sh @@ -460,8 +460,15 @@ make_install() local srcdir="`get_srcdir $1 ${2:+$2}`" if test `echo ${target} | grep -c aarch64` -gt 0; then dryrun "make ${make_opts} -C ${srcdir} headers_install ARCH=arm64 INSTALL_HDR_PATH=${sysroots}/usr" - else + elif test `echo ${target} | grep -c i.86` -gt 0; then + dryrun "make ${make_opts} -C ${srcdir} headers_install ARCH=i386 INSTALL_HDR_PATH=${sysroots}/usr" + elif test `echo ${target} | grep -c x86_64` -gt 0; then + dryrun "make ${make_opts} -C ${srcdir} headers_install ARCH=x86_64 INSTALL_HDR_PATH=${sysroots}/usr" + elif test `echo ${target} | grep -c arm` -gt 0; then dryrun "make ${make_opts} -C ${srcdir} headers_install ARCH=arm INSTALL_HDR_PATH=${sysroots}/usr" + else + warning "Unknown arch for make headers_install!" + return 1 fi if test $? != "0"; then warning "Make headers_install failed!" -- 1.9.3

10 years, 10 months

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[ACTIVITY] 8th - 26th September

by Bernie Ogden

cbuild2 benchmarking - TCWG-360 [9/10] * Knocked off a lot of rough edges * Now working fairly robustly lowlevellock.h comments - CARD-341 [4/10] * Got a bit stuck trying to follow condvar locking * But wasn't really needed to describe the code in question LCA [10/10] LCA recovery day [2/10] Meetings/mail/etc [5/10] =Plan= cbuild2 benchmarking: * Push upstream for others to look at * Sort out storage story for benchmark sources and results * Try to get working on a Juno (in LAVA, therefore on OE) * Look at our Jenkins scripts with a view to figuring out how to hook in * Work through list of bits 'n' pieces to fix - + Don't scrape logs (bad for server) + Don't fail on network timeouts + Extra target control knobs - disable ASLR, set a nasty nice value, maybe hugepages + Set appropriate flags automatically for cross-builds

10 years, 10 months

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[ACTIVITY] 22 - 26 September 2014

by Will Newton

== Progress == * Monday off to recover from Connect (2/10) * Catch up on email (1/10) * Upstream work (1/10, CARD-341) - Patch review * Investigate malloc single-thread optimizations (1/10, TCWG-436) - More exploratory work on atomics * Investigate binutils support for full range of AArch64 relocs (1/10) * Annual leave Thursday and Friday (4/10) == Issues == * None == Plan == * More work on atomics * Figure out how to make an LLVM cross compiler with gas/ld -- Will Newton Toolchain Working Group, Linaro

10 years, 10 months

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[ACTIVITY] Week 39

by Yvan Roux

2 post-connect days off (4/10) == Issues == * Validation is in an "under construction" state. == Progress == * GCC 4.9 2014.10 (4/10) - Analysed validation issues with our cbuild2 branches. * Misc: (2/10) - Catch up with mails. - Various meetings. - AArch64 Libunwind upstream patch review. == Plan == * Catch up with backports * Audit validation failures

10 years, 10 months

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[Weekly] 22-26 SEPT 2014

by Michael Collison

== This week == * TCWG-515 - Neon intrinsic testing part 1 (6/10) - developed reduced test case to demonstrated vclz DejaGnu failure - Created upstream bug (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63365) - Bug triage discovered issue occurs in copy propagation * Linaro Bugzilla 331 - [4.9 Regression] ICE in final_scan_insn, at final.c:2952 (aarch64-linux-gnu) (2/10) - Completed validation testing and sent to gcc-patches for trunk review * Linaro bugzilla 602 - gcc 4.7.3 compiler internal error while building hsail components (1/10) - Bug triage * Misc. (1/10) - 1:1 Meetings == Next week == - Identify solution for upstream bug 63365 - Triage bugzilla 602 - Resolve any blocking issues to patch for bugzilla 331

10 years, 10 months

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[ACTIVITY] 22-26 Sept 2014

by Kugan

== Progress == * LR register not used in leaf functions (TCWG-539) (2/10) Posted the patch after regression testing https://gcc.gnu.org/ml/gcc-patches/2014-09/msg01833.html * AArch64 Spec2006 int regression (3/10) - After struggling to boot Juno, found the combination that works - Ran spec2006 int benchmarks to try reproduce - waiting for more information to continue * Launchpad bugs (LP1331112, LP1332640. LP1331126 and LP1320965) (3/10) - Set-up cbuild2 and spec2k on aarch64 board - ran aarch32 and aarch64 in aarch64 board with 09.2014 - Updated the bug entries with the results * Misc (2/10) - Connect recovery (2/10) == Plan == * 29/09/2014 - Public holiday * Get back to zero/sign extension with pass to promote operations

10 years, 10 months

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[Activity] 22 - 26

by Venkataramanan Kumar

== Progress == * Connect recovery [6/10] Very short week short week travel back from connect 22nd - 23rd travel. 25th - sick leave. * Backport - Bug 676 - CSE did not optimize the redundant cmp instruction on aarch64 [2/10]. Checked the issue by building latest trunk, linaro branch and by adding the patch on top of linaro branch . Validated the code generated at -O2 and it seemed to be optimal and bug does not occur. Discussed with Christophe and decided to rebackport it along with 211881. It was reverted because of an libjava bug which is fixed in 211881. Used back flip to back port, git review was not automatically working. So manually amended by adding the change log for combined backport of revisions 209643 and 211881. * Misc [2/10] Prepared notes on LCU14 to AMD team. Examined spec benchmark in internal Aarch64 hardware for a support issue. Internal meeting and 1-1 with manager. == Plan == * Coremark benchmark and report for PGO and PGO + LTO * Get profiles on trunk for PGO and PGO + LTO * 29/9/2014 - Personal day off * 2/10/2014 - 3/10/2014- Dusserra Holidays Leave

10 years, 10 months

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[ACTIVITY] Week 39

by Charles Baylis

== Progress == * Connect recovery [4/10] * NEON load/stores (TCWG-516 [5/10]) . initial review of my vldN_lane asm()->__builtin patches is promising . the other patches for other loads/stores are wrong. Have been investigating (with upstream) how much bigger the can of worms is. * Misc [1/10] . LCA15 travel . bug investigation (#405) == Plan == * more NEON load/store

10 years, 10 months

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[ACTIVITY] 22-26 Sept 2014

by Christophe Lyon

Short week, 2 days holiday (4/10) == Progress == * GCC trunk/4.9 cross-validation (2/10) - reported a few new FAILs - trying to allocate time to fix new FAILs introduced in the 4.9 branch on devirt-28a.C, mostly because a testsuite configuration problem. - fixed reporting of email-driven validations * AArch64 libsanitizer - finally committed asan+ubsan support for AArch64! * Misc (4/10) * email catch-up * calls/meetings * updated backports speadsheet, backlog now > 75 * bugzilla management == Next == * GCC trunk/4.9 cross-validation: - actually reproduce+propose fixes for a couple of regressions recently observed * AArch64 thread sanitizer * Neon intrinsic tests * Analyze failures in Backport job in Jenkins * Analyze differences in validation results between using shared libs and static libs

10 years, 10 months

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[ACTIVITY] Week 39

by Renato Golin

== Progress == * Two days holiday * Toolchain (CARD-862 2/6) - http://llvm.org/PR20700 (-Wa,-mfpu in IAS) WIP - http://llvm.org/PR20702 (vadd #imm, fix vbic) FIXED * Background (4/6) - Code review, meetings, discussions, etc. - Catching up with reviews & emails post-connect == Plan == * Continue -Wa,-mfpu implementation in IAS * Start implementing fpu stuff in assembler * Fix the Compiler-RT buildbot * Add libc++abi buildbot

10 years, 10 months

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updated stable branch

by Rob Savoye

I just updated the stable branch to match master, which in my testing has been reliable and stable. I also changed the following Jenkins jobs to use the stable branch: Backport, BuildFarm, BinaryRelease, SourceRelease. Note that now any Jenkins job that runs tests and validates them using the tcwgweb.sh script, the build and test run may succeed, but if there are any regressions, the dot will be Red now instead of Green. This primarily effects the Backport and the Release jobs. - rob -

10 years, 11 months

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updating stable branch today

by Rob Savoye

Unless anyone has a problem, I'm going to update the stable branch from master this afternoon. - rob -

10 years, 11 months

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Re: what options should to compile aarch64 by gcc 4.9.

by Yvan Roux

Hi Sugar, the toolchain you need is the one with the aarch64-linux-gnu triplet. Regards, Yvan On 18 September 2014 08:05, Sugar <shugelinux(a)gmail.com> wrote: > Hi yvan, > I saw linaro have released > gcc-linaro-arm-linux-gnueabihf-4.9-2014.08_linux.tar.bz2. I have compiled > cortex-a53 by 'arm-linux-gnueabihf', but its binary is 'ELF 32-bit LSB > executable', not 'ELF 64-bit'. > Is it only compile to aarch32? If I want to compile aarch64, which > toolchains I should choose? Or what options should pass to compiler. > > Thanks.

10 years, 11 months

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Toolchain for kernel 2.6.36

by Joel (Xi Zhou) Zhou

Hi all, I'm using ct-ng to rebuild Linaro toolchain (arm-linux-gnueabihf ) for Linux kernel 2.6.36. Ct-ng version: ct-ng-linaro-1.13.1-4.8-2014.01-01 There is a “FATAL: Kernel too old” message after mounting the rootfs. It turns out the default config using pre-built sysroot from Linaro website. After setting " CT_PREBUILT_SYSROOT=n" to build sysroot with lower kernel version, I get the following error: [EXTRA] Building final compiler [ERROR] /projects/broadcom-linux/joelz/opt/gcc-linaro-arm-linux-2.6-gnueabihf/arm-linux-gnueabihf/libc/usr/include/gnu/stubs.h:7:29: fatal error: gnu/stubs-soft.h: No such file or directory [ERROR] make[5]: *** [_muldi3.o] Error 1 [ERROR] make[4]: *** [multi-do] Error 1 I tried to put " -mfloat-abi=hard" as CFLAG in different place, still can't pass this error. If you have any idea how to fix it, please let me know. Thanks, Joel

10 years, 11 months

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[ACTIVITY] 8-12 September 2014

by Christophe Lyon

== Progress == * GCC trunk/4.9 cross-validation (2/10) - noticed a couple of newly introduced failing tests in some corner cases - improved notification of selected commits to help fill the backports speadsheet * AArch64 libsanitizer - answered Marcus/Andrew after their feedback * Misc (conf calls, meetings, ....) 6/10 - usual 1/1 and team calls - Connect preparation - travelled on Friday == Next == * Connect LCU14

10 years, 11 months

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[ACTIVITY] Week 37

by Renato Golin

== Progress == * Toolchain (CARD-862 6/10) - http://llvm.org/PR20529 (VFP unwind libcxxabi) - http://llvm.org/PR20700 (-Wa,-mfpu in IAS) - http://llvm.org/PR20702 (vadd #imm, fix vbic) * Buildbots (TCWG-76 1/10) - Three new ARMv7 buildbots with CMake are up - Another ARMv7 Benchmarking buildbot (tracking) * Background (3/10) - Code review, meetings, discussions, etc. - Connect preparations, taxi booking, etc == Plan == * Connect then... * Finish vadd, -mfpu * Start implementing fpu stuff in assembler * Fix the Compiler-RT buildbot * Work on LPC presentations

10 years, 11 months

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[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, 11 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, 11 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, 11 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, 11 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, 11 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, 11 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, 11 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, 11 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, 11 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, 11 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, 11 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, 11 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, 11 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, 11 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, 11 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, 11 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, 11 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, 11 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, 11 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, 11 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, 11 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, 11 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, 12 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, 12 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, 12 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, 12 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, 12 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, 12 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, 12 months

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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, 12 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, 12 months

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