- linaro-toolchain - lists.linaro.org

by Yvan Roux

Friday off (WWII Memorial Day) == Issue == * none == Progress == o Upstream GCC (4/8) * [TCWG-762] - GCC Maintenance - PR64208 (iWMMXT LRA bug): Committed in trunk. - PR65924 (ICE on arm-none-eabi): Fixed and committed at rev. 22572 * Flags for Cortex-a53 erratum #84341 workaround: - Committed in trunk - To be backported into FSF 5.1 and 4.9 branches o 2015.04 re-spin (2/8) * Snapshot tarball deployed o Misc (2/8) * Various meetings * Reviewed and validated a libunwind ARM patch * Played a bit with docker AArch64 image (based on UMEQ) https://registry.hub.docker.com/u/mickaelguene/arm64-debian/ == Plan == - Short week (off Thu, and Fri) - Continue upstream pending work

10 years, 4 months

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[ACTIVITY] 4th - 8th May

by Bernie Ogden

(Public) Holiday [2/10] Benchmark automation - TCWG-360 [6/10] * More unit tests * Refactoring - test writing is an effective spotlight * Experimented with LAVA log streaming as a 'listener' replacement ** Reduces complexity, for (possibly insignificant) costs in generality and scalability * Gave some thought to results storage, benchmarking of restricted targets Misc [2/10] =Plan= Pick a direction on streaming vs listeners, write down the reasoning Follow up (close out?) results storages and restricted targets Write more tests, refactoring where appropriate

10 years, 4 months

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[ACTIVITY] 27th April - 1st May

by Bernie Ogden

Holiday [2/10] Benchmark automation - TCWG-360 [5/10] * Finished rolling backbench patches into review * Submitted some test suite patches to reduce the number of untested cases * Began writing tests for benchmarking in general Misc [3/10]

10 years, 4 months

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[Weekly] 04-08 MAY 2015

by Michael Collison

* TCWG-146 - Detect smin/umin idiom (3/10) - Investigation * TCWG-110 - Investigate generating out-of-line branch tables in ARM GCC (1/10) - Resolved with ARM as questionable benefit; inline constant pools are cheap to access. * Illness (5/10) * Misc (1/10) - Conference calls == Next week == - Resolve TCWG-146

10 years, 4 months

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[ACTIVITY] 04 May -- 08 May

by Kugan

== Progress == * Upstream GCC (4/10) - TCWG-779 Vector rtx costs for AArch64 ACKed to commit. - Asked to do fresh regression and benchmarking - re-based to latest trunk - Trunk is broken and narrowed down the failure to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66066 - Fixed and regression testing finished. Setting up benchmarking for spec2k before committing. * IRA (5/10) - Looked at https://bugs.linaro.org/show_bug.cgi?id=540 (TCWG-773 Median of three has unneeded register moves) - https://bugs.linaro.org/show_bug.cgi?id=1532 * Misc (1/10) - gcc-patches, gcc-bugs list - Meetings == Plan == - Continue with gcc stage1 activities - Look at register allocation

10 years, 4 months

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[ACTIVITY] Week 19

by Prathamesh Kulkarni

== This week == * PR49551 (2/10) - Created new patch: http://pastebin.com/PsLTgvp7 - merge_decls() calls memcpy to copy newdecl into olddecl thus overriding DECL_COMMON in olddecl which is the source of the bug. If newdecl has common/nocommon attribute set, honor it, else DECL_COMMON would be set if both olddecl and newdecl have DECL_COMMON set. - Bootstrapped on x86, tested on x86, arm - Not yet figured out why r221297 masks this bug. * TCWG-619 (4/10) - managed to build chromium LTO on ARM, requires disabling components enabled by variable 'chromium_code'. Size of chrome executable reduces by 8 mb. - the bug: "error out of range" appears only during LTO build of components enabled by chromium_code. Results in very few instances of the same error message when LTO build for chromium_code components. - Disabling LTO in sandbox.gyp and passing -flto results in following error: /tmp/ccYJJbUK.ltrans25.ltrans.o:<artificial>:vtable for blink::WebDocument [clone .lto_priv.89343]: warning: relocation refers to discarded section /home/prathamesh.kulkarni/fsf-toolchain/lib/gcc/x86_64-unknown-linux-gnu/6.0.0/../../../../x86_64-unknown-linux-gnu/bin/ld.gold: error: hidden symbol '_ZN5blink11WebDocumentD1Ev' is not defined locally Also present for x86. The workaround is to pass -flto --param lto-partitions=1 as mentioned in PR57703. - gold ICE with v8 LTO build for ARM not reproducible with master branch. - Trying to use Martin Liska's scripts for gathering build stats: https://github.com/marxin/script-misc/blob/master/system_top.py https://github.com/marxin/script-misc/blob/master/vmstat_parser.py * Misc (4/10) - Exams preparation - Visa application == Next Week == - PR49551: figure out why r221297 masks the bug, write test-cases and submit patch upstream - chromium/v8 build stats - exams

10 years, 4 months

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[Activity] 04 May 2015 -- 08 May 2015

by Yao Qi

* UK bank holiday on Monday [2/10] # Progress # * arm/aarch64 gdb bug fixing [1/10]. ** TCWG-765 fails in gdb.base/coredump-filter.exp. Patch is pushed it in. ** TCWG-767, patch is pushed it in. * TCWG-805, aarch64 native debugging multi-arch support. [2/10]. Let arm use newer ptrace PTRACE_GETREGSET in order to align with aarch64. Ongoing. * Think about debugging programs on different exception levels (EL3, EL2 and EL1). Read doc about EL in aarch64. Looks they need multi-inferior debugging. Request more details. [2/10] * Misc [3/10] ** Book travel and get travel insurance. It is my first travel in ARM, familiarise myself with the travel process. ** Visa application. # Plan # * TCWG-805, aarch64 native debugging multi-arch support. * Other things needed for visa application. -- Yao

10 years, 4 months

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writing a new Machine Description file (e.g cortex-a57.md) in gcc

by Virendra Kumar Pathak

Hi Linaro Toolchain Group, I am new to gcc development. I am trying to write a new md file describing pipeline information for a processor. Please suggest some good reference document for understanding machine description file. Few questions from cortex-a53.md file: For first integer pipeline following is defined - (define_cpu_unit "cortex_a53_slot0" "cortex_a53") Is name cortex_a53_slot0 is a keyword or it is any general string? Is there any convention in choosing names for cpu units? If ‘cortex_a53_slot0’ a general string, how assembler knows it is first integer pipeline? How these *.md files are used? When they are compiled and how they are used? How to verify an md file for a processor is written correctly or not? How to test it? What other design consideration must be kept in mind while writing a new md file? Thanks. with regards, Virendra Kumar Pathak

10 years, 4 months

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[ANNOUNCE] Linaro GCC 4.9 2015.04 snapshot re-spin

by Yvan Roux

This is a re-spin of the Linaro GCC 4.9 2015.04 source package snapshot. The re-spin of this snapshot includes a new configure-time option to enable by default a workaround for Cortex-A53 erratum number 843419 and options to explicitly disable or enable it during compilation. This snapshot tarball is available on: http://snapshots.linaro.org/components/toolchain/gcc-linaro/4.9-2015.04-1 Original release notes for GCC 4.9 2015.04 snapshot: The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2015.04 snapshot of the Linaro GCC 4.9 source package. Linaro GCC 4.9 2015.04 is the first Linaro GCC source package snapshot in the 4.9 series. It is based on FSF GCC 4.9.3-pre+svn222035 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 snapshots[2]. Interesting changes in this GCC source package snapshot include: * Linaro bugzilla PR fixed: #415, #1382, #1391 * Updates to GCC 4.9.3-pre+svn222035 * Backport of instruction scheduler improvements * Backport of [AArch64,Neon] Add patterns + builtins for vld[234](q?)_lane_* intrinsics * Backport of [AArch64] Implement fusion adrp+add/movk+movk * Backport of [AArch32] Cortex-A17 support * Backport of [AArch64] Fix __builtin_aarch64_absdi, must not fold to ABS_EXPR * Backport of PR rtl-optimization/63917 * Backport of PR tree-optimization/62178 tree-ssa-loop-ivopts * Backport of [AArch64] Add TARGET_MIN_DIVISIONS_FOR_RECIP_MUL * Backport of [AArch64] Simplify patterns for sshr_n_[us]64 intrinsic * Backport of [AArch64] Simplify+improve patterns for ushr(d?)_n_u64 intrinsic * Backport of [AArch32] Fix reservation pattern in cortex-a9-neon.md * Backport of [AArch64] Don't disparage add/sub in SIMD registers * Backport of [AArch64] Add SIMD-reg variants of logical operators and/ior/xor/not * Backport of [AArch64] Fix XOR_one_cmpl pattern; add SIMD-reg variants for BIC,ORN,EON * Backport of [AArch32] Use Cortex-A17 tuning parameters for Cortex-A12 * Backport of [AArch32] Make CLZ_DEFINED_VALUE_AT_ZERO and CTZ_DEFINED_VALUE_AT_ZERO return 2. * Backport of [AArch32] Minor optimization on thumb2 tail call * Backport of [AArch64] Update APM/XGene-1 * Backport of [AArch64] Add a new scheduling description for the ARM Cortex-A57 processor * Backport of [AArch64] Fix PR 64263: Do not try to split constants when destination is SIMD reg * Backport of [AArch64] Add support for -mcpu=cortex-a72 This snapshot tarball is available on: http://snapshots.linaro.org/components/toolchain/gcc-linaro/4.9-2015.04 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 bugzilla against GCC product: http://bugs.linaro.org/enter_bug.cgi?product=GCC * Interested in commercial support? inquire at "Linaro support": mailto:support@linaro.org [1] Stable source package releases are defined as releases where the full Linaro Toolchain validation plan is executed. [2] Source package snapshots are defined when the compiler is only put through unit-testing and full validation is not performed.

10 years, 4 months

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502 connecting to abe.tcwglab.linaro.org

by Christopher Covington

Hi, We've had trouble using ABE recently. abe$ ./abe.sh --target aarch64-linux-gnu NOTE: Downloading md5sums to abe/snapshots RUN: /usr/bin/wget --timeout=10 --tries=2 --directory-prefix=abe/snapshots/ http://abe.tcwglab.linaro.org/snapshots/md5sums --2015-04-21 16:02:33-- http://abe.tcwglab.linaro.org/snapshots/md5sums Resolving abe.tcwglab.linaro.org (abe.tcwglab.linaro.org)... 81.128.185.43 Connecting to abe.tcwglab.linaro.org (abe.tcwglab.linaro.org)|81.128.185.43|:80... connected. HTTP request sent, awaiting response... 502 cannotconnect 2015-04-21 16:02:42 ERROR 502: cannotconnect. Thanks, Chris -- Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project

10 years, 4 months

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[ACTIVITY] 27 April - 1 May 2015

by Omair Javaid

== Progress == LLDB development -- Wrote hardware breakpoint handlers for NativeLinuxRegisterContext ARM [2/10] [TCWG-770] -- Debugging for issues and code cleanup AArch64 LLDB watchpoint support [2/10] [TCWG-771] -- Fix, test, debug, cleanup and patch re-submission. [1/10] -- Resubmitted, update and commited ARM SysV ABI implementation. [TCWG-643] -- Resubmitted, update and commit AArch64 SysV ABI implementation. [TCWG-715] -- Setting up android test environment [TCWG-651] GDB development [1/10] [TCWG-677] -- Clean-up arm-linux record replay test cases Miscellaneous [2/10] -- Meetings, emails, discussions etc. -- Toolchain Sprint travel bookings and visa application preparation. Public Holiday [2/10] -- Friday 1st May 2015 (Labor Day) == Plan == LLDB development -- Complete work on AArch64 watchpoints and hardware breakpoints -- Hopefully submit ARM watchpoint work may be later in the week. -- Figure out android development Miscellaneous -- Complete and submit France visa application GDB development -- Gather ARM/AArch64 record-replay testsuite work and submit patches for yao.

10 years, 4 months

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[ACTIVITY] April 27th-May 1st

by Christophe Lyon

* Short week: Friday public holiday == Progress == * Linaro-GCC 4.8-2015.04 - prepared fsf-4.8 branch merge - some problems with validation infra * GCC trunk - Committed cleanup patch for Neon intrinsics tests * Validation - learnt how to create jobs for ci.linaro.org * Misc - meetings, conf-calls, emails, ... == Next == * Linaro-GCC-4.8-2015.04 * Submit remaining Neon intrinsics tests * Validation

10 years, 4 months

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[ACTIVITY] Week 18

by Yvan Roux

Friday off (Labor Day) == Issue == * none == Progress == o Upstream GCC (6/8) * [TCWG-785] ARM backend insn cleanup - Addressed comments after submission - Committed at rev 22528 * [TCWG-762] - GCC Maintenance - PR64208 (iWMMXT LRA bug): Updated submission thread after validation ended. - PR65924 (ICE on arm-none-eabi): Fixed and committed at rev. 22572 o 2015.01 and 2015.04 re-spin (_/_) * Prepared GCC patch that adds flags for Cortex-a53 erratum #843419 * Tagged and re-spun 2014.01 with the erratum fix * Start 2015.04 re-spin o Misc (2/10) * Various meetings * Continue GCC git repository branches cleanup == Plan == - Finish 2015.04 re-spin - Continue upstream pending work

10 years, 4 months

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[Weekly] 27 APR-01 MAY 2015

by Michael Collison

* Absence (illness) (9/10) * Misc (1/10) - Conference calls == Next week == - Unsure due to computer related injury

10 years, 4 months

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27 April -- 01 May 2015

by Kugan

- Public holiday (2/10) == Progress == * Upstream GCC (3/10) - TCWG-796 Zero/sign extension elimination with vrp. - TCWG-555 posted patch for compiler pass to widen computation to back-end promoted mode * IRA (4/10) - Looked at https://bugs.linaro.org/show_bug.cgi?id=540 (TCWG-773 Median of three has unneeded register moves) * Misc (1/10) - gcc-patches, gcc-bugs list - Meetings == Plan == - Continue with gcc stage1 activities - Look at register allocation

10 years, 4 months

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[ACTIVITY] Week 18

by Prathamesh Kulkarni

== This week == * TCWG-619 (8/10) PR65858 - workaround: add explicit casts in the file cld_generated_cjk_uni_prop_80.cc - created reduced test case: http://pastebin.com/WJvKRjn2 - commit r222249 introduced the issue - patch submitted upstream: https://gcc.gnu.org/ml/gcc-patches/2015-04/msg02063.html - Paolo Carlini pointed out it doesn't work with -w option, instead of testing on warn_narrowing flag, he modified it to check on pedwarn()'s return value, which covers up for both -Wno-narrowing and -w, and committed with this modification (r222700). PR65837 - patch to lto-wrapper rejected. - Another hack to pass driver's argv to lto-wrapper via another environment variable COLLECT_GCC_OPTIONS_DRIVER rejected by Richard. - Ramana and Richard pointed out the proper fix would be to handle target attributes in ARM backend. - I could try extending Christian Bruel's target attribute patches for fpu options after they're checked in which would then fix the PR. chromium LTO build - Many instances of same error message during LINK chrome: chrome.ltrans0.s:18399164: Error: Thumb2 branch out of range chrome.ltrans0.s:9671243: Error: branch out of range works fine for non-lto. A similar issue, occurred for v8 LTO build - PR65778, but it was marked resolved invalid. - chromium builds with LTO for chrome component. - ld.bfd segfault while building chromium with LTO not reproducible with master. - non-LTO build undefined reference to libattr1 functions not reproducible with ld.bfd master. This probably was sysroot/libc issue than issue with ld.bfd. * PR49551 (2/10) - reverting r221297 reproduces the ICE - tried to fix with following patch: http://pastebin.com/knuWeY0C - fixes the ICE but following regressions observed on arm-linux-gnueabihf: http://pastebin.com/E1zLtq8s == Issues == - Can't login to cards.linaro.org (was able to before). I get error - "You do not have permission to login". == Next Week == - Investigate testsuite failures for PR49551 - Selectively enable LTO on components in chromium. - exams preparation

10 years, 4 months

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[ACTIVITY]

by Renato Golin

== Progress == * Automation Framework (CARD-1378 2/10) - Interface with the lab/system teams (plan, schedule) - Saving the bridge's image into an SD card * Maintenance (CARD-1833 6/10) - Unifying target parser (PR20787 / D9435) * Background (2/10) - Code review, meetings, discussions, etc. - Sync with Adhemerval == Plan == * Continue target description changes (Clang part)

10 years, 4 months

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[Activity] 27 April 2015 -- 01 May 2015

by Yao Qi

* Half day leave on Thu, [1/10]. # Progress # * arm/aarch64 gdb bug fixing. [3/10] ** TCWG-765, fails in gdb.base/coredump-filter.exp. No progress, as no one reviews the patch. ** TCWG-672, fails in gdb.base/relativedebug.exp, fixed. ** TCWG-567, fails in gdb.base/break-idempotent.exp, fixed. ** TCWG-767, Propose to disable target-side evaluation of breakpoint condition for software single step targets. Patch is posted. * TCWG-805, aarch64 gdb multi-arch support, [2/10] * TCWG-729, investigate GDB multi-target support, [2/10] * TCWG-757, upstream patch review, [1/10] * Misc [1/10] ** Meeting, ** Fill online forms for France visa application, ** Book travel to Grenoble. # Plan # * Public holiday on Monday. * TCWG-805, aarch64 gdb multi-arch support, * TCWG-729, investigate GDB multi-target support, * other arm/aarch64 gdb test fails fixing. -- Yao

10 years, 4 months

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[Weekly] 20-24 APR 2015

by Michael Collison

* Backports (4/10) - Local backports completed - 218531 - Fix ICE at -O0 on vld1_lane intrinsics (and dependencies listed below) - 212756 - [AArch64] Implement vfma_f64, vmla_f64, vfms_f64, vmls_f64 intrinsics. - 215180 - [AArch64] Simplify vreinterpret for float64x1_t using casts. - 217662 - [1/3] Replace __builtin_aarch64_createv1df with a cast, cleanup - 217665 - [2/3] Extend aarch64_simd_vec_set pattern, replace asm for vld1_lane - 217705 - Replace temporary assembler for vld1_dup * Illness (5/10) * Misc (1/10) - Conference calls == Next week == - Backports for June release

10 years, 4 months

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[ACTIVITY] 20th - 24th April

by Bernie Ogden

benchmark automation - TCWG-360 [3/10] * Shifted more generic patches from backport branch to review * One complete run of backport benchmarking before lab went down Misc [7/10] * Most of this (4 or 5 tenths) is reaction to lab downtime =Plan= Benchmarking test suite Fish out, finish off thoughts about benchmark access control NB Next Monday (4th May) is a public holiday in UK

10 years, 4 months

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[ACTIVITY] 20 - 24 April 2015

by Omair Javaid

== Progress == LLDB development -- Debugging test code for hardware breakpoint/watchpoint issues on chromebook for ARM LLDB support [4/10] [TCWG-770] -- Wrote native process linux helpers for arm and aarch64 hardware breakpoints [2/10] [TCWG-770] [TCWG-771] -- Fix, test, debug, cleanup and patch re-submission. [3/10] -- LLDB ARM SysV ABI implementation. [TCWG-643] -- LLDB AArch64 SysV ABI implementation. [TCWG-715] -- Native process linux bug fixes [TCWG-651] Miscellaneous [1/10] -- Upstream reviews -- Meetings, emails, discussions etc. == Plan == LLDB development -- At least submit lldb arm hardware breakpoint native process linux helper functions -- Resubmit register read/write bug fix after changes -- Resubmit LLDB ARM SysV ABI implementation. -- Resubmit LLDB AArch64 SysV ABI implementation. -- Bug fixing, patch reviews etc

10 years, 4 months

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[Activity] Week 17

by Prathamesh Kulkarni

== This Week == * TCWG-619: * abe sysroot/libc issue While building chromium with development build of toolchain on arm-linux-gnueabihf, I get the following error: undefined reference to clock_gettime() Builds fine with release toolchain build. Symlinking libc in toolchain install directory to sysroots/arm-linux-gnueabihf appears to work (which is what --tarbin did). * PR65778 - v8 fails to build with LTO - Resolved Invalid * PR65837 - target specific builtin not available - created a reduced test case - There's a weird issue: looks like for lto1, translation unit command line options, precede the default ones rather than overriding them. Assume test.c contains a neon intrinsic: arm-linux-gnueabihf-gcc -flto -c test.c -mfpu=neon arm-linux-gnueabihf-gcc -flto test.o results in target specific builtin not available, because both -mfpu=neon and -mfpu=vfpv3-d16 is passed and -mfpu=vfpv3-d16 overrides earlier -mfpu=neon Passing -mfpu=neon at link time correctly overrides -mfpu=vfpv3-d16. * PR6778 - ICE in varpool_node::get_constructor. - Looks like PR65776 appears due to same issue as well. - It appears error_mark_node gets streamed that causes ICE. - Triage went wrong, thought it was an error in typeck2.c:check_narrowing(). * PR49551 - The C front-end c/c-decl.c:merge_decls still incorrectly marks the variable as 'common' for the test-case: int x = 5; int x; However it's not reproducible anymore on trunk (maybe latent?) - I have an untested patch that resolves the issue in merge_decls(). * Issues - abe built native gcc on x8_64-unknown-linux-gnu fails to build code when passed -m32 option (bug 1508). * Misc - exams on 20th and 24th april. * Next week - Continue working on PR65837, PR65778 - Test patch for PR49551

10 years, 4 months

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[ACTIVITY] Week 17

by Yvan Roux

== Issue == * none == Progress == o Upstream GCC (8/10) * [TCWG-785] ARM backend insn cleanup - Validate and re-worked the patch - About to be submitted upstream * [TCWG-762] - GCC Maintenance - PR64208 (iWMMXT LRA bug): Found hardware to validate the fix (Thanks Riku :) Validation ongoing * Lot of time wasted due to lab compromisation o Misc (2/10) * Various meetings * GCC git repository branches cleanup == Plan == - Continue cleaning GCC git repo to prepare our migration - Continue upstream pending work

10 years, 4 months

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[ACTIVITY] 20th - 24th April

by Kugan

== Progress == * Upstream GCC (9/10) - TCWG-780 - Improve register allocation for aarch64_*_sisd_or_int<mode>3 patterns. - TCWG-486 - Optimize Constant Uses in Loops. Posted the arm part of the patch that addresses review comments after full testing. Waiting for the cprop review. - TCWG-796 Zero/sign extension elimination with vrp. Posted the new set of patches for review. Looking at the testcases H.J.L. pointed me to. - TCWG-779 Vector rtx costs for AArch64. Posted the patch that addresses review comments after full testing. * Misc (1/10) - gcc-patches, gcc-bugs list - Meetings == Plan == - Continue with gcc stage1 activities - Monday public holiday

10 years, 4 months

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20 April 2015 -- 24 April 2015

by Yao Qi

# Progress # * arm/aarch64 gdb bug fixing. [5/10] ** PR 18208 (TCWG-765) fails in gdb.base/coredump-filter.exp. Workaround tricky quote issue with dejagnu/tcl/ssh/bash. A RFC is posted out. ** Fails in gdb.base/relativedebug.exp (TCWG-672), patch is posted out review. ** Fails in gdb.base/break-idempotent.exp. Skip some tests in it which require more than one HW watchpoint registers, while arm-linux only has one. Patch is posted out. ** TCWG-793, do experiment with showing LSB of address in thumb mode inside GDB, in order to align with MIPS(microMIPS/MIPS16). It needs more work than expected, and even out the scope of GDB. It is paused. * FSF GDB patch review. [4/10] ** Review "all stop on top of non stop" V3, done. ** Review "memory-mapped register browsing" patch. Requested more information from the author. * Misc, meeting. [1/10] # Plan # * Fix test fails for arm and aarch64 gdb. * Continue my HW watchpoint resource counting patches once linaro boxes are online. These boxes don't have HW watchpoint support, and GDB doesn't handle this case well. * Upstream patches review. -- Yao Qi

10 years, 4 months

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[ACTIVITY] 13 - 17 April 2015

by Omair Javaid

== Progress == LLDB development -- Some progress on hardware watchpoint support for lldb arm linux. [1/10] [TCWG-770] -- Some progress on hardware watchpoint support for lldb aarch64 linux. [1/10] [TCWG-771] -- LLDB ARM SysV ABI implementation. [4/10] [TCWG-643] - Testing and updates with upstream suggestion - Figuring out a method to handle thumb functions unwind information. -- LLDB ARM: Bug fixes. [3/10] [TCWG-651] Miscellaneous [1/10] -- Upstream reviews -- Meetings, emails, discussions etc. == Plan == LLDB development -- Progress towards hardware watchpoint support for lldb arm linux. -- Progress towards hardware watchpoint support for lldb aarch64 linux. -- Bug fixing, patch reviews etc

10 years, 4 months

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Build u-boot using Linaro toolchain

by Joel (Xi Zhou) Zhou

Hi all, I have built our customized u-boot (u-boot-2012.10-rc3), with two Linaro toolchain, but have no luck with the latest toolchain. The u-boot built with gcc-linaro-arm-none-eabi-4.9-2014.09_linux can boot on the development board. This toolchain was pre-built toolchain from Linaro, built with crosstool-NG. The version is gcc version 4.9.2 20140904 (prerelease) (crosstool-NG linaro-1.13.1-4.9-2014.09 - Linaro GCC 4.9-2014.09) With the same u-boot source, the binary built with the Linaro gcc 4.9 2015.04 hang on the same board. The 2nd toolchain was compiled locally on RHEL6, built with ABE tool. We build it locally to avoid "GLIBC_2.14 not found" issue on the pre-built toolchain. The version is gcc version 4.9.3 20150413 (prerelease) (Linaro GCC 2015.04) Does anyone have an idea what happen? Is it a regression bug in gcc4.9? Thanks, Joel -------------------------------------------------------- [joelz@ldt-joelz]:$ /projects/broadcom-linux/shared/toolchains/gcc-linaro-arm-none-eabi-4.9-2014.09_linux/bin/arm-none-eabi-gcc -v Using built-in specs. COLLECT_GCC=/projects/broadcom-linux/shared/toolchains/gcc-linaro-arm-none-eabi-4.9-2014.09_linux/bin/arm-none-eabi-gcc COLLECT_LTO_WRAPPER=/projects/broadcom-linux/shared/toolchains/gcc-linaro-arm-none-eabi-4.9-2014.09_linux/bin/../libexec/gcc/arm-none-eabi/4.9.2/lto-wrapper Target: arm-none-eabi Configured with: /cbuild/slaves/oorts/crosstool-ng/builds/arm-none-eabi-linux/.build/src/gcc-linaro-4.9-2014.09/configure --build=i686-build_pc-linux-gnu --host=i686-build_pc-linux-gnu --target=arm-none-eabi --prefix=/cbuild/slaves/oorts/crosstool-ng/builds/arm-none-eabi-linux/install --with-local-prefix=/cbuild/slaves/oorts/crosstool-ng/builds/arm-none-eabi-linux/install/arm-none-eabi --without-headers --with-newlib --enable-threads=no --disable-shared --with-pkgversion='crosstool-NG linaro-1.13.1-4.9-2014.09 - Linaro GCC 4.9-2014.09' --with-bugurl=https://bugs.launchpad.net/gcc-linaro --disable-__cxa_atexit --with-gmp=/cbuild/slaves/oorts/crosstool-ng/builds/arm-none-eabi-linux/.build/arm-none-eabi/build/static --with-mpfr=/cbuild/slaves/oorts/crosstool-ng/builds/arm-none-eabi-linux/.build/arm-none-eabi/build/static --with-mpc=/cbuild/slaves/oorts/crosstool-ng/builds/arm-none-eabi-linux/.build/arm-none-eabi/build/static --with-isl=/cbuild/slaves/oorts/crosstool-ng/builds/arm-none-eabi-linux/.build/arm-none-eabi/build/static --with-cloog=/cbuild/slaves/oorts/crosstool-ng/builds/arm-none-eabi-linux/.build/arm-none-eabi/build/static --with-libelf=/cbuild/slaves/oorts/crosstool-ng/builds/arm-none-eabi-linux/.build/arm-none-eabi/build/static --enable-lto --enable-linker-build-id --enable-libmudflap --disable-libgomp --enable-libssp --disable-libstdcxx-pch --enable-multilib --enable-languages=c,c++,fortran --with-multilib-list=aprofile Thread model: single gcc version 4.9.2 20140904 (prerelease) (crosstool-NG linaro-1.13.1-4.9-2014.09 - Linaro GCC 4.9-2014.09) --------------------------------------------- [joelz@ldt-joelz]:$ /projects/toolchains/gcc-4.9-rhel6-local-build/bin/arm-linux-gnueabi-gcc -v Using built-in specs. COLLECT_GCC=/projects/toolchains/gcc-4.9-rhel6-local-build/bin/arm-linux-gnueabi-gcc COLLECT_LTO_WRAPPER=/projects/toolchains/abe/_build/builds/destdir/x86_64-unknown-linux-gnu/libexec/gcc/arm-linux-gnueabi/4.9.3/lto-wrapper Target: arm-linux-gnueabi Configured with: '/projects/toolchains/abe/_build/snapshots/gcc.git~linaro-4.9-branch/configure' SHELL=/bin/sh --with-bugurl=https://bugs.linaro.org --with-mpc=/projects/toolchains/abe/_build/builds/destdir/x86_64-unknown-linux-gnu --with-mpfr=/projects/toolchains/abe/_build/builds/destdir/x86_64-unknown-linux-gnu --with-gmp=/projects/toolchains/abe/_build/builds/destdir/x86_64-unknown-linux-gnu --with-gnu-as --with-gnu-ld --disable-libstdcxx-pch --disable-libmudflap --with-cloog=no --with-ppl=no --with-isl=no --disable-nls --enable-multiarch --disable-multilib --enable-c99 --with-tune=cortex-a9 --with-arch=armv7-a --with-fpu=vfpv3-d16 --with-float=softfp --with-mode=thumb --with-build-sysroot=/projects/toolchains/abe/_build/sysroots/arm-linux-gnueabi --enable-lto --enable-linker-build-id --enable-long-long --enable-shared --with-sysroot=/projects/toolchains/abe/_build/builds/sysroot-arm-linux-gnueabi --enable-languages=c,c++,fortran,lto --enable-fix-cortex-a53-835769 --enable-checking=yes --disable-bootstrap --with-bugurl=https://bugs.linaro.org --with-pkgversion='Linaro GCC 2015.04' --build=x86_64-unknown-linux-gnu --host=x86_64-unknown-linux-gnu --target=arm-linux-gnueabi --prefix=/projects/toolchains/abe/_build/builds/destdir/x86_64-unknown-linux-gnu Thread model: posix gcc version 4.9.3 20150413 (prerelease) (Linaro GCC 2015.04)

10 years, 4 months

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toolchain folders and content

by Robert Schwarz

Hi, I am using the linaro tolchain to create a root-filesystem for an embedded Linux system. I would like to copy the essential include files and libraries(libc) from the toolchain to the rootFS of the embedded system. Is there any explanation of the folder structure of the toolchain so I know which folder to copy? How do I know which files to copy and where those files are located in the toolchain? Thanks, Robert

10 years, 4 months

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Linaro Toolchain Product Release Process Changes (Effective 2015.04)

by Ryan Arnold

Hello, In an effort to provide a longer quality control window for quarterly releases the Linaro Toolchain Working Group will be making some changes to the release process starting with the forthcoming 2015.04 products. Little will change for the consumers of TCWG products. The current monthly source release of the 'stable' Linaro GCC source archives posted to releases.linaro.org will move to snapshots.linaro.org and will be designated 'monthly snapshots'. The exact location will be announced when the 2015.04 Toolchain component source archive release notes are posted to this mailing list. These monthly snapshots will continue to have branch merges, performance fixes, security fixes, and correctness fixes applied on a monthly basis. They will also continue to have validation across a variety of common ARM targets performed (per backport) against them. TCWG will introduce the concept of a 'release candidate source archive' and 'release candidate binary toolchain archive' six weeks before the projected release date of the Quarterly Binary Toolchain Release. For example, the 2015.05 Quarterly Binary Toolchain and Quarterly Source Archive will be based upon the 2015.04 source archive snapshot. Release candidate source and binary archives will be posted to snapshots.linaro.org. This release candidate will receive the scrutiny of internal and external stakeholders for six weeks and give an opportunity to evaluate the forth-coming Quarterly Binary Toolchain Archive and Source Archive Release. Problems found with the release candidates will result in the availability of incremental release candidate archives. The official quarterly release will be posted to releases.linaro.org. Please direct any questions or concerns to this mailing list or to me directly. -- Ryan S. Arnold Linaro Toolchain Working Group - Engineering Manager www.linaro.org

10 years, 4 months

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[ACTIVITY] 13th - 17th April

by Kugan

== Progress == * Upstream GCC (7/10) - Rebased and posted/prepared patches for gcc stage1 for the following - TCWG-780 - Improve register allocation for aarch64_*_sisd_or_int<mode>3 patterns - TCWG-779 - Improve codegen for vld2q_f32 and vst2q_f32 - TCWG-486 - Optimize Constant Uses in Loops - Zero/sign extension elimination with vrp - Vector rtx costs for AArch64 * Misc (1/10) - gcc-patches, gcc-bugs list - Meetings == Plan == Continue with gcc stage1 activities

10 years, 5 months

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[ACTIVITY] Week 16

by Yvan Roux

== Issue == * none == Progress == o Upstream GCC (7/10) * [TCWG-762] - GCC Maintenance - PR65648 (ARMv6 IRA clobbering issue): Addressed upstream comment - Committed - PR65729 (LRA ICE on arm-linux-gnueabhif): Committed - Fixed testcase for some targets. * [TCWG-785] ARM backend insn cleanup - More cleanup related to type attribute - Analyzing impact on the scheduling (pipeline description) o Linaro GCC Releases (2/10) * [TCWG-702] Merge FSF 4.9 branch * [TCWG-787] Releases new version numbering * [TCWG-703] Snapshot notes for 2015.04 o Misc (1/10) * Various meetings == Plan == - Continue TCWG-785

10 years, 5 months

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[ACTIVITY] 13th - 17th April

by Bernie Ogden

Benchmark automation - TCWG-360 [5/10] * Flushed the rest of the easy stuff from my 'small fixups' to my 'staging' branch * Started rolling generic patches from my backport-benchmark branch into gerrit * Prodded at the prototype backport-benchmark job until the pieces worked ** Ran out of time to try an end-to-end run * Thought a little about permissions for access to source/results * Use of nc.traditional appears to have introduced a race condition catomics - TCWG-436 [2/10] * Tried a run on A15 - same story as A57, good improvement on g8 libc ubenchmark that doesn't translate into SPEC subset * Performance counting the ubenchmark suggests variation around cache accesses on the catomic vs not-catomic code, didn't have any time to think about what, if anything, this means Misc [3/10] * Featuring an unusual level of ARM interruption * Especially concerns about change from multiarch to non-multiarch sysroot in binary releases =Plan= Confirm backport benchmarking working, roll remaining generic patches into gerrit Investigate the nc.traditional race Add a retry loop around LAVA boot (occasionally see LAVA-fail here) Create unit tests Follow up on (non-)multiarch sysroot issue

10 years, 5 months

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[ACTIVITY] 13th Apr - 17th April.

by Venkataramanan Kumar

=== Progress === * Get TSAN building for Aarch64 on 42-bit VMA systems. (4/10) (-pie mode only) Expected Passes : 253 Expected Failures : 2 Unsupported Tests : 1 Unexpected Failures: 13 The failures are categorized into three types. (1) setjmp and longjmp implementation in assembly needs to written for Aarch64 . ThreadSanitizer :: longjmp.cc ThreadSanitizer :: longjmp2.cc ThreadSanitizer :: longjmp3.cc ThreadSanitizer :: longjmp4.cc ThreadSanitizer :: signal_longjmp.cc (2) FATAL: ThreadSanitizer: failed to intercept pthread_cond_init. I need to debug and see why this happens. ThreadSanitizer :: bench_mutex.cc ThreadSanitizer :: cond.c ThreadSanitizer :: cond_cancel.c ThreadSanitizer :: cond_race.cc ThreadSanitizer :: cond_version.c ThreadSanitizer-Unit :: rtl/TsanRtlTest/Posix.CondBasic (3) TLS descriptions ThreadDescriptorSize (), GetTls () and ThreadSelf () defintions are needed for aarch64. tls_race.cc tls_race2.cc Some ptrace defintions are needed PTRACE_GETREGS, PTRACE_SETREGS PTRACE_GETFPREGS, PTRACE_SETFPREGS for sanitizer, but they are not implemented for Aarch64. I am planning to switch off that code in TSAN. * ASAN/TSAN documentation. ASAN documentation complete. TSAN in progress. (4/10) * Emails, meetings. (2/10) * Linaro 1-1 with christophe, Ryan. * AMD meetings/event, 1-1 with AMD manager, status meeting. * GCC mailing list. ===Plan === Complete TSAN documentation. Analyze remaining failures for TSAN. Push LLVM tree to git.linaro.org for handover.

10 years, 5 months

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[Weekly] 13-17 APR 2015

by Michael Collison

* Backports (3/10) - Backports validated and commited to SVN for April release - 219724 - Add a new scheduling description for the ARM Cortex-A57 processor - 219746 - Fix broken 219724 - 220103 - A57 pipeline model - 220399 - Add support for -mcpu=cortex-a72 and -mcpu=cortex-a72.cortex-a53 - 220413 - Add support for -mcpu=cortex-a72 * Illness (6/10) * Misc (1/10) - Conference calls == Next week == - Begin backports for May release - Continue TCWG 110 investigation

10 years, 5 months

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[ACTIVITY] Week 16

by Prathamesh Kulkarni

== This Week == TCWG-619: * Compiled chromium on ARM without LTO with following hack to resolve error: undefined reference to 'clock_gettime', version 'GLIBC_2.17' - chromium uses prebuilt sysroot in src/chrome/installer/linux/debian_wheezy_arm-sysroot and it has libc-2.13.so, libc.so.6 is symbolic link to libc-2.13.so in the sysroot. However it appears minimum libc-2.17 is required (version 'GLIBC_2.17'). I replaced libc-2.13.so by abe-built libc-2.20-2014.11-1-git.so, and symlinked libc.so.6 to libc-2.20-2014.11-1-git.so and that worked (for non LTO build). Curiously I didn't require to do this for building chromium with linaro prebuilt toolchain. * Found a way to disable LTO for building lib/libblink_web.so by manually removing -flto from web_blink.ninja and Webkit/source/core/*.ninja, which worked. * Chromium non LTO build issues on ARM: a) Fails with gcc-5 due to error in chromium: https://code.google.com/p/chromium/issues/detail?id=340312 To compile chromium, I applied a patch to cp/typeck2.c to shut narrowing conversion errors (ideally the fix should be to chromium). b) ld.bfd (linaro branch) fails with undefined references to many functions in libattr1: http://pastebin.com/ju4SCDSE Not sure if this is ld.bfd bug, or me building it wrongly. Haven't tested yet with trunk ld.bfd. Works fine with gold. * Target independent Chromium LTO issues with trunk a) Top-level asm and LTO (PR57703) - This appears to be not supported. * Chromium LTO issues on ARM with trunk: a) ICE in lib/libblink_web.so (PR65576). b) Target specific builtin not available: http://pastebin.com/2ANsEyMn Seems related to: https://code.google.com/p/chromium/issues/detail?id=408997 c) ICE during LINK chrome: http://pastebin.com/DpjJ5M7g d) GNU ld appears to segfault compiling in LTO mode. * Chromium LTO issues with linaro-4.9 branch: a) ICE elf section out of range (PR57208) - fixed in trunk b) gold - Ran out of file descriptors: fixed in trunk. Seems the following patch which is in trunk but not in linaro branch fixes it: https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blobdiff;f=gold/… I tried to backport it but got errors, possibly depends on other commits. * v8 ARM LTO issues: - Assembly error - offset out of range (PR65778). Possibly invalid bug. == Next Week == - Create reduced test case for PR65576 - Figure out how to disable LTO for building lib/libblink_web.so in .gyp files - PR49551 - Exams on 20th and 24th April.

10 years, 5 months

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[ACTIVITY]

by Renato Golin

== Progress == * EuroLLVM (4/10) * Buildbots (CARD-1823 4/10) - Installing CMake 3.2 / Ninja 1.5 on all bots - Fixing broken bots - Investigating broken LNT in llvm.org * Background (2/10) - Code review, meetings, discussions, etc. - Catching up after holidays == Plan == * Continue target description changes

10 years, 5 months

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[ACTIVITY] 13 April 2015 -- 17 April 2015

by Yao Qi

# Progress # * arm gdb, [6/10] many fails are fixed in the last two weeks. 1034->153 FAILs of -marm, 1008->143 FAILs of -mthumb, and 627->71 FAILs of -mfloat-abi=soft/-marm/-march=armv4t. There are 367 FAILs in total, and 205 FAILs are about reverse debugging, which has been broken for many years. ** TCWG-769, patch is committed upstream. ** TCWG-567, two patches are committed, and another two patches are in progress. Existing HW watchpoint resource counting in GDB doesn't work well on arm boards which doesn't have HW watchpoint support. ** TCWG-509, many arm gdb test fails are fixed. In progress. * FSF GDB patch review. [3/10] Test Pedro's "all-stop on top of non-stop" patch series V3 on both arm and aarch64. Results are much better. * Misc, meeting. [1/10] # Plan # * Fix test fails for arm and aarch64 gdb. * Upstream patches review. -- Yao

10 years, 5 months

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[ACTIVITY] 13-17 April 2015

by Christophe Lyon

== Progress == * Validation - trying to understand not-so-random git checkout failures - more Jenkins cleanup * Backports - reviews * Snapshot - prepared gcc-linaro-snapshot-4.9-2015-04 * Misc - meetings, conf-calls, emails, ... == Next == Holidays 20-24 April, back on the 27th

10 years, 5 months

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Issue building busybox using aarch64-linux-gnu 2014.11

by Kevin Petit

Hi, I (and several other people) am (are) having trouble to build busybox with the latest aarch64-linux-gnu 2014.11 binaries we got from linaro.org. It seems none of the built-in library search paths (gcc -print-search-dirs) allow to find crt[1i].o. They seem to be expected in a multiarch location but aren't (libc/usr/lib64). We're working around this with a symlink. Is this a bug? Have you seen similar issues? Here's a failing command-line and the associated error message: /path/to/gcc-linaro-4.9-2014.11-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-gcc -Wall -Wshadow -Wwrite-strings -Wundef -Wstrict-prototypes -Wunused -Wunused-parameter -Wunused-function -Wunused-value -Wmissing-prototypes -Wmissing-declarations -Wno-format-security -Wdeclaration-after-statement -Wold-style-definition -fno-builtin-strlen -finline-limit=0 -fomit-frame-pointer -ffunction-sections -fdata-sections -fno-guess-branch-probability -funsigned-char -static-libgcc -falign-functions=1 -falign-jumps=1 -falign-labels=1 -falign-loops=1 -fno-unwind-tables -fno-asynchronous-unwind-tables -Os -static -o busybox_unstripped -Wl,--start-group applets/built-in.o archival/lib.a archival/libarchive/lib.a console-tools/lib.a coreutils/lib.a coreutils/libcoreutils/lib.a debianutils/lib.a e2fsprogs/lib.a editors/lib.a findutils/lib.a init/lib.a libbb/lib.a libpwdgrp/lib.a loginutils/lib.a mailutils/lib.a miscutils/lib.a modutils/lib.a networking/lib.a networking/libiproute/lib.a networking/udhcp/lib.a printutils/lib.a procps/lib.a runit/lib.a selinux/lib.a shell/lib.a sysklogd/lib.a util-linux/lib.a util-linux/volume_id/lib.a archival/built-in.o archival/libarchive/built-in.o console-tools/built-in.o coreutils/built-in.o coreutils/libcoreutils/built-in.o debianutils/built-in.o e2fsprogs/built-in.o editors/built-in.o findutils/built-in.o init/built-in.o libbb/built-in.o libpwdgrp/built-in.o loginutils/built-in.o mailutils/built-in.o miscutils/built-in.o modutils/built-in.o networking/built-in.o networking/libiproute/built-in.o networking/udhcp/built-in.o printutils/built-in.o procps/built-in.o runit/built-in.o selinux/built-in.o shell/built-in.o sysklogd/built-in.o util-linux/built-in.o util-linux/volume_id/built-in.o -Wl,--end-group -Wl,--start-group -lm -Wl,--end-group ========== /work/integration/envs/latest/tools/gcc/gcc-linaro-4.9-2014.11-x86_64_aarch64-linux-gnu/bin/../lib/gcc/aarch64-linux-gnu/4.9.3/../../../../aarch64-linux-gnu/bin/ld: cannot find crt1.o: No such file or directory /work/integration/envs/latest/tools/gcc/gcc-linaro-4.9-2014.11-x86_64_aarch64-linux-gnu/bin/../lib/gcc/aarch64-linux-gnu/4.9.3/../../../../aarch64-linux-gnu/bin/ld: cannot find crti.o: No such file or directory collect2: error: ld returned 1 exit status make: *** [busybox_unstripped] Error 1 Thank you! Regards, Kévin -- 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, 5 months

5
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[ACTIVITY] Week 14

by Charles Baylis

== Progress == Holiday [6/10] (inc 1 bank holiday) Vectorization (TCWG-735) [2/10] . wrote some test cases Misc [2/10] Meetings, abe bugs

10 years, 5 months

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[ACTIVITY] Week 15

by Charles Baylis

== Progress == Bank Holiday [2/10] Backports [2/10] . started and abandoned backport of 217440 due to unbackported dependent patch . FSF 4.9 branch is missing from our git mirror - this is still wasting time after 7 months Vectorization (TCWG-735) [3/10] Benchmarking [1/10] . started 2015.03 benchmarking Misc [2/10] raspberry pi config calls/mailing lists

10 years, 5 months

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[ACTIVITY] 6 - 10 April 2015

by Omair Javaid

== Progress == LLDB development -- Patch update, test and re-submission native Linux register context for Arm. [1/10] [TCWG-650] -- Patch update, test and re-submission POSIX register context for Arm. [1/10] [TCWG-755] -- Tested lldb armhf native build on ubuntu utopic, build fine but lacks of VFP support is a blocker. [1/10] [TCWG-647] -- Initial investigation on hardware watchpoint support for lldb arm linux. [2/10] [TCWG-770] -- Initial investigation on hardware watchpoint support for lldb aarch64 linux. [2/10] [TCWG-771] -- Fix lldb build and test environment for arm and aarch64. [2/10] [TCWG-651] Miscellaneous [1/10] -- Meetings, emails, discussions etc. == Plan == LLDB development -- Progress towards hardware watchpoint support for lldb arm linux. -- Progress towards hardware watchpoint support for lldb aarch64 linux. -- Bug fixing, patch reviews etc

10 years, 5 months

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[ACTIVITY] Week 15

by Yvan Roux

== Issue == * none == Progress == * [TCWG-762] - GCC Maintenance (9/10) - PR65648 (ARMv6 IRA clobbering issue): Worked on a testcase that exhibit the issue and don't conflict with various multilib configs. Generic part of the patch accepted, ARM related part needs to be reviewed by a ARM maintainer. - PR65710 (LRA ICE in Thumb1): Proposed a quick workaround for this bug, Proper fix was committed by Vlad. - PR65729 (LRA ICE on arm-linux-gnueabhif): Proposed a fix, which is a stage1 material. Issue workarounded on trunk to avoid extensive validation for the RC. * [TCWG-702] Merge FSF 4.9 branch - Merged up to revision 221939 - Will do another one to include needed LRA fixes. * Misc (1/10) - Various meetings == Plan == - FSF branch merge #2 - Back on a Thumb2 insn fix

10 years, 5 months

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[ACTIVITY] 5th - 10th April

by Bernie Ogden

catomics - TCWG-436 [4/10] * Fiddled with SPEC runs with unstripped binaries on tiny Juno discs * Got a run for the interesting subset of SPEC, non-atomic catomics still show no effect * Tried a few catomics variations with the glibc malloc microbenchmark, here non-atomic catomics show a significant effect * Tried firing a perf shotgun at the malloc microbenchmark to see if it suggests anything - results pending Benchmark automation - TCWG-360 [3/10] * Fixed Jira benchmarking * Flushed some of the backlog out of my 'small fixups' branch Misc [1/10] Holiday [2/10]

10 years, 5 months

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[ACTIVITY] 30th March - 3rd April

by Bernie Ogden

catomics - TCWG-436 [4/10] * Fiddled catomics to not use atomics at all, set off a new SPEC run * Not using atomics seems wrong in general, but OK for malloc/free Benchmark automation - TCWG-360 [1/10] * Quick look at Tyler's LAVA console streamer * Ported benchmark scripts to work on Debian ** Turns out there are two versions of netcat and Debian and Ubuntu default to different ones * Checked lab transition plan for benchmark-affecting points Misc [1/10] Holiday [4/10]

10 years, 5 months

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[Weekly] 06-10 APR 2015

by Michael Collison

* Backports (7/10) - Local backports completed - 218531 - Fix ICE at -O0 on vld1_lane intrinsics - 218532 - Fix ICE on non-constant indices to __builtin_aarch64_im_lane_boundsi - 218536 - Remove be_checked_get_lane, check bounds with __builtin_aarch64_im_lane_boundsi - Backports in validation - 219724 - Add a new scheduling description for the ARM Cortex-A57 processor - 219746 - Fix broken 219724 - 220103 - A57 pipeline model - Backports commited to SVN for April release - 219656 - Update APM/XGene-1 costs - 219657 - xgene1 machine description refactoring - 219659 - Updated copyright year for 'xgene1.md'. - 219661 - Update APM/XGene-1 description - 219679 - Fix xgene_tune initialization - 218145 - Add Cortex-A17 support - 218146 - Add -mcpu=cortex-a17.cortex-a7 - 219472 - Use Cortex-A17 tuning parameters for Cortex-A12 * Investigate generating out-of-line branch tables in ARM GCC (TCWG 110) (2/10) * Misc (1/10) - Conference calls == Next week == - Commit a57 backport to SVN - Continue TCWG 110 investigation

10 years, 5 months

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[ACTIVITY] 6 - 10 April 2015

by Kugan

== Progress == * Public holiday (2/10) * Sick (2/10) * TCWG-620 (4/10) - regression tested a version of patch - few regressions lead to reworked it - have a version that passes regression * TCWG-753 and Bug 1373 (1/10) - Al the Back-ports committed - closing the card * Misc (1/10) - gcc-patchs and gcc-bugs list == Plan == * Start with the RA issue during vectorization * TCWG-521

10 years, 5 months

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[ACTIVITY] Week 15

by Prathamesh Kulkarni

== This Week == * TCWG-619 * V8 - aarch64 v8 LTO build with different options - found workaround for v8 LTO build on ARM * Chromium - statically linking libstdc++ works for building chromium with linaro-4.9-branch - patched cp/typeck2.c to shut up on narrowing conversion errors to build chromium with master branch. - weird issue, chromium build hangs consistently at: AR obj/components/libomnibox.a due to patch to WebGLRenderingContextBase.idl, reverting that worked fine. * PR49551 - git bisect shows ICE cannot be reproduced after r221297. * Misc - Preparatory Leave from college, semester ended. == Issues == - ABE bugs: 1362, 1439, 665 - Can't access BlueJeans from Firefox on pc, gets stuck on "Initialization" window. == Next Week == - Complete LTO build v8 with different options on ARM, AArch64 and x86. - Chromium LTO build on x86 with different LTO options. - Chromium LTO and non LTO build on ARM. - PR 49551.

10 years, 5 months

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[ACTIVITY] 06 April 2015 -- 10 April 2015

by Yao Qi

UK Holiday on 06 April [2/10]. # Progress # * arm gdb test fail fixing. [4/10] ** TCWG-767, patch is committed. ** TCWG-769, patch is posted upstream for review. ** TCWG-765, triaged this issue. It is a test case or test harness bug, rather GDB's. Need more time to investigate how to run "echo" command on remote target through dejagnu. ** Fix a bug in my ARM displaced stepping code written in 2011. ** TCWG-509, patch is approved upstream, but will be combined into other's patches. ** TCWG-567, Skip incorrect tests in gdb.base/watchpoint-reuse-slot.exp for arm. Patch is committed. * FSF GDB patch review. [3/10] Test Pedro's "all-stop on top of non-stop" patch series on both arm and aarch64. Some regressions are found and exchange thoughts on them. * meeting, [1/10] # Plan # * Test fails fixing for arm and aarch64 gdb. * Upstream patches review. -- Yao

10 years, 5 months

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[ACTIVITY] 7-10 April, 2015

by Christophe Lyon

* Monday public holiday (2/10) == Progress == * Validation (3/10) - created stable branch, Jenkins cleanup * Backports (2/10) - reviews * Misc (3/10) -- meetings, conf-calls, emails, ... == Next == * Validation: more Jenkins cleanup == Future == Holidays: 20-24 April

10 years, 5 months

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[ACTIVITY] 30 March - 3 April 2015

by Christophe Lyon

== Progress == * Validation - more stabilization and bug fixes in abe and jenkins jobs - updated staging branch * Backports - reviews * Misc - meetings, conf-calls, emails, ... == Next == * Validation

10 years, 5 months

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[ACTIVITY] 30 March - 3 April 2015

by Kugan

== Progress == * Public holiday (2/10) * zero/sign extension - TCWG-521 (2/10) - Looked at profile results - Starting aarch64 benchmarking * TCWG-620 (2/10) - Ran into missing pattern issue - Discussed it with Maxim and Jim * TCWG-753 (2/10) - orted few issues with my backporting set-up after talking to Yvan - Started all the backports - Backport testing in progress * Bug 1373 (1/10) - Backport testing in progress * Misc (1/10) - gcc-patchs and gcc-bugs list == Plan == * TCWG-620 and TCWG-521

10 years, 5 months

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[ACTIVITY] 30th March -- 03rd April

by Yao Qi

Holiday: 03/04 [2/10] # Progress # * aarch64 gdb, 8 FAILs are fixed but 6 FAILs are introduced by the new test case. [2/10] ** KFAIL two tests in gdb.threads/no-unwaited-for-left.exp for remote target. Done. * TCWG-509, arm gdb, 1034 FAILs of -marm, 1008 FAILs of -mthumb, and 627 FAILs of -mfloat-abi=soft/-marm/-march=armv4t. [4/10] ** Look at fails in gdb.threads/non-stop-fair-events.exp. Root cause is almost identified, and patches are being tested. * TCWG-757, FSF GDB, [1/10] ** Review two committed patches causing some problems for arm. Will raise questions on them later. Looks I need to allocate more time on upstream reviewing to prevent these arm-unfriendly patches go in. * meeting, [1/10] # Plan # * Take more care on arm gdb. * Upstream patches review, especially on all-stop-on-top-of-non-stop patch set. * Fix the rest of 10+ fails in aarch64 gdb. -- Yao

10 years, 5 months

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[ACTIVITY] Week 14

by Yvan Roux

== Issue == * none == Progress == * [TCWG-762] - GCC Maintenance (9/10) - Linaro bugzilla 1399 identified as an upstream bug (PR65647) Now fixed on trunk and backported in FSF 4.9, will be in our branch in the coming branch merge. * [TCWG-699] Backports - Committed them into our SVN FSF repo. * Misc (1/10) - Various meetings == Plan == - FSF branch merge - Back on a Thumb2 insn fix

10 years, 5 months

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[ACTIVITY] 30 March - 3 April 2015

by Omair Javaid

== Progress == LLDB development -- Completed implementation and submited native Linux register context for Arm upstream [3/10] [TCWG-650] -- Completed implementation and submitted POSIX register context for Arm upstream [3/10] [TCWG-755] -- Fixing LLDB build and dev environment issues [1/10] Miscellaneous [3/10] -- 3rd April Swap day for 23rd March Public Holiday -- Meetings, emails, discussions etc. == Plan == LLDB development -- Bug Fixing and Test result improvement. -- Patch reviews and upstream commits. Miscellaneous -- Try LLDB armhf builds and figure out a way to do gcc 4.8 softfloat build.

10 years, 5 months

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[ACTIVITY] 30th March - 03rd April.

by Venkataramanan Kumar

4 day work week (03-Apr good Friday) (2/10) * ASAN 32bit allocator failures on amd-01 (4/10) Completed analyzing failures. Sent a patch to Address sanitizes community for review. Applied patch to latest LLVM trunk and ran tests. found one failure. But it was due to the test case assuming that return value from "getpwnam_r" all is always zero. Fixed the test case by removing the assert and all LLVM tests passes. [ Renato tested the patch on APM (39 bit VA) ]. * Again there is some discussion in GCC bugzilla on deciding which allocators to use for Aarch64 42 bit VA*. I have a patches for both allocators and posted it to ASAN group 64 bit allocators wont work on juno. So for ASAN there is a need to have some kind of dynamic address space detection mechanism. Set the allocators type and required mappings at runtime for Aarch64. But that needs to be decided by ASAN group whether to do that or use my 32 bit allocator patch . I am planning to stop it here and wait as suggested by renato. * Get TSAN building for Aarch64 on 42-bit VMA systems. (2/10) (-pie mode only) Applied patch that I had on GCC tree on LLVM trunk. Build failed need to set kVdsoBeg and kMadviseRangeBeg. I set some default value to allow TSAN build to complete. right now clang does not recognize aarch64 target for aarch64 although I enabled it under TSAN. looking at the issue. * Emails, meetings. (2/10) * Linaro 1-1 with christophe, Ryan, status meet * AMD meetings/event, 1-1 with AMD manager, status meeting. * GCC mailing list. == Plan == * Get TSAN building for Aarch64 on 42-bit VMA systems. (-pie mode only) * Document TSAN/ASAN work and patch details in wiki. == Issues == * ASAN patch cannot be up streamed unless we decide on allocator to use.

10 years, 5 months

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[Activity] Week 14

by Prathamesh Kulkarni

== This week == * TCWG-619 - v8 LTO build with different options for x86 and aarch64. - Reported upstream v8 LTO build failure on ARM. - Tried to build chromium with FSF gcc, linaro binary release and linaro-4.9-branch * PR49551 - Not able to reproduce ICE with latest trunk (r221871). * Misc - College assignments submission and term end. == Next Week == * TCWG-619 - Build chromium with linaro-4.9-branch and trunk. - Prepare stats for LTO build with different options for v8 on x86 and aarch64 - Try building chromium with LTO with FSF trunk for arm * TCWG-639: - Add enhancement to header file flattening script.

10 years, 5 months

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[ACTIVITY]

by Renato Golin

== Progress == Friday holiday * Automation Framework (CARD-1378 2/10) - Power cut in the office - Fixing gateway, rebooting machines - Mob management * LLVM ARM Maintenance (CARD-1833 2/10) - ARMTargetParser review * Background (4/10) - Code review, meetings, discussions, etc. - All LLVM buildbots broken (one still) - Trying to merge Android round/exception - https://android-review.googlesource.com/#/c/125910/1 - Not that easy, will need bigger changes and tests to go in == Plan == * Long holidays * EuroLLVM * Back on the 15th

10 years, 5 months

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-O2 faster than -O3

by Edward Nevill

Hi, I did some tests on the following function --- CUT HERE --- int fibo(int n) { if (n < 2) return 1; return (fibo(n-2) + fibo(n-1)); } --- CUT HERE --- and I discovered that it is faster -O2 than -O3. This is with gcc 4.9.2. Looking at the disassembly I see it is using FP registers to hold integer values. The following is a small extract. .L3: fmov w0, s8 sub w25, w25, #1 cmn w25, #1 add w0, w0, w27 fmov s8, w0 bne .L19 add w0, w0, 1 b .L2 Recompiling with -mgeneral-regs-only generates a huge improvement. The following are the times I get on various partner HW. I have normalised the -O2 times to 1 second so that I do not disclose actual partner performance data: Partner 1: -O2 = 1sec, -O3 = 1.13sec, -O3 -mgeneral-regs-only = 0.72sec Partner 2: -O2 = 1sec, -O3 = 0.68sec, -O3 -mgeneral-regs-only = 0.60sec Partner 3: -O2 = 1sec, -O3 = 0.73sec, -O3 -mgeneral-regs-only = 0.68sec Partner 4: -O2 = 1sec, -O3 = 0.83sec, -O3 -mgeneral-regs-only = 0.84sec So, in general, -O3 does actually do better than -O2, but in all cases performance is better if I stop it using FP registers for int values. I have put a tarball of the test program along with 3 binaries and 3 disassemblies here:- http://people.linaro.org/~edward.nevill/fibo.tar All the best, Ed.

10 years, 5 months

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GDB Build Error: No rule to make target `-L../zlib'

by Christopher Covington

Hi, I'm seeing the following build error trying to build from the current master branch (1ac806b) of http://git.linaro.org/toolchain/binutils-gdb. make[3]: *** No rule to make target `-L../zlib', needed by `run'. Stop. make[3]: *** Waiting for unfinished jobs.... make[3]: Leaving directory `gdb/sim/arm' The following commit predating the zlib changes appears to build without error. b19a8f8545100a08ee2a64c05631aff6f651faa1 Thanks, Chris -- Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project

10 years, 5 months

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[Weekly] 23-27 MAR 2015

by Michael Collison

== This week == * Backports (9/10) - Local backports completed - 218145 - Add Cortex-A17 support - 218146 - Add -mcpu=cortex-a17.cortex-a7 - 219472 - Use Cortex-A17 tuning parameters for Cortex-A12 - 219724 - Add a new scheduling description for the ARM Cortex-A57 processor - 219746 - Fix broken 219724 - 220103 - A57 pipeline model - Backports in validation - 219656 - Update APM/XGene-1 costs - 219657 - xgene1 machine description refactoring - 219659 - Updated copyright year for 'xgene1.md'. - 219661 - Update APM/XGene-1 description - 219679 - Fix xgene_tune initialization - Backports commited to SVN for April release - 218432 - Clarify the usage of SCHED in AARCH64_CORE macro - 218635 - Change all AARCH64_FL_FPSIMD to AARCH64_FL_FOR_ARCH8. - 219470 - Implement TARGET_SCHED_MACRO_FUSION_PAIR_P * Misc (1/10) - Conference calls == Next week == - Vacation

10 years, 5 months

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[ACTIVITY] 23rd - 27th March

by Bernie Ogden

catomics - TCWG-436 [5/10] * Got pointed at a suitable set of benchmarks, results still underwhelming * However, patches were using relaxed atomics rather than no atomics at all * Fiddled abe into building sysroots for me (I get libstdc++ that way) Misc - [5/10] * Tidied up some 'perf shotgun' scripting from the juno cache investigation, so I've got the tools for next time * Started sorting out my backups - but didn't finish before build-01's death destroyed a bunch of work * Raised priority of sorting out my backups, now just a matter of waiting on some large rysncs * Pieced my world back together on dev-01 =Plan= Holiday Wednesday, public holidays next Friday and Monday See how catomics do when we're conditionally-not-atomic-at-all Investigate a bit to see if I can see if there's a reason we were using relaxed atomics Resurrect Jira benchmarking on dev-01 * Will include some porting, scripts don't work out of box on dev-01

10 years, 5 months

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[ACTIVITY] 23th - 27th March

by Yao Qi

One day off on Friday. [2/10] # Progress # * aarch64 gdb, the number of FAIL is reduced to 26 on aarch64-linux! there are still about 10+ FAILs can be fixed. [4/10] ** TCWG-726, fails in gdb.base/break-interp.exp. Fixed. Remove prelink package from juno board as aarch64 isn't supported. ** TCWG-681, fails in savedregs.exp. Patch is committed. ** PR 18139. Patches are committed. * arm gdb, 938 fails for -mfloat-abi=soft and 1014 fails for -mfloat-abi=hard. Analysing fails. [2/10] * GDB kernel-awareness meeting with ST. [1/10] Understand the definition of "kernel-awareness", and will discuss about the design upstreams later. * TCWG-716, investigate LLDB perf testing. [1/10] Done. ** LLDB already had something about performance testing, in lldb/test/benchmarks/ and lldb/tools/lldb-perf. ** TestCompileRunToBreakpointTurnaround.py compares the speed of LLDB and GDB, but in an incorrect way. # Plan # * Take more care on arm gdb test fails. * Fix the rest of aarch64 gdb fails. -- Yao

10 years, 5 months

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[ACTIVITY] Week 13

by Yvan Roux

== Issue == * none == Progress == * Infrastructure and Validation (1/10) * GCC Upstream (6/10) - PR63587 and PR64871 committed in FSF 4.9 branch. - PR64208 patch review is OK, but needs to be validate on an iWMMXT platform (pinged some Marvell people). - Submitted a fix for arm_subsi3_insn (alternatives issue). This is a stage1 patch. - Identified another insn which has alternatives issues in Thumb2. * Release and Backports (1/10) - Backflip maintenance - 12 Backports for 2015.04 (CARD TCWG-699) * Misc (2/10) - Various meetings - ST internal year review == Plan == - Continue upstream work.

10 years, 5 months

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[ACTIVITY] 23rd - 27th March.

by Venkataramanan Kumar

* ASAN/TSAN run on 42 bit VA Aarch64 (TCWG-634) (6/10) Sent a patch that enables ASAN tests with 64 bit allocator on amd-01 (AMD Seattle). All ASAN test passes in LLVM. But on juno platform 39 bit VA does not have enough memory to map hence we need to stay on 32 bit allocator. Discussed with ASAN community and it is been decided to use 32 bit allocator as default. They are not ok with having a mechanism to detect VA and swutch allocators based on that. Started looking at failures on amd-01 (AMD steatle) with 32 bit alloctor. None of the ASAN tests ran when I switched to 32 bit allocator on amd-01. Reason there is a spin mutex lock which is waiting for the memory allocation to complete, but assertion failure makes it to wait infinitely. After fixing map range the assertion failure is gone but I keep getting some failures with 32 bit allocator "on". Bug869: Continued to look at ABS_EXPR cases (2/10). * Emails, meetings. (2/10) * Linaro 1-1 with christophe, Ryan, status meet * AMD meetings/event, 1-1 with AMD manager, status meeting. * GCC mailing list. == Plan == *Continue to fix TSAN/ASAN 32bit allocator failures on amd-01 . * Bug869

10 years, 5 months

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[ACTIVITY] 23-27 March 2015

by Kugan

== Progress == * Type promotion pass (zero/sign extension elimination) - TCWG-547 (2/10) - Ran more benchmarks and gathered more data (will post the results) - Need to run perf to analyse regressions * Bug 1373 (1/10) - Set-up back-porting infrastructure - Ran into some issues * TCWG-486 (6/10) - Discussed with Jim and identified the issues and possible fixes - Getting closer to an acceptable fix - Need to run benchmarking * Misc (1/10) - gcc-patchs and gcc-bugs list == Plan == * TCWG-620 and TCWG-547

10 years, 5 months

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[ACTIVITY] 23 - 27 March 2015

by Omair Javaid

== Progress == LLDB development -- Patch submission and build testing LLDB Arm SysV ABI classes [1/10] [TCWG-643] -- Patch submission and build testing LLDB AArch64 SysV ABI classes [1/10] [TCWG-715] -- Implemented native Linux register context for Arm [3/10] [TCWG-650] -- Implemented POSIX register context for Arm [3/10] [TCWG-755] -- Migrated LLDB wiki to collaborate.linaro.org and updated howtos [1/10] [TCWG-640] [TCWG-641] [TCWG-583] -- Another try on doing a native LLDB build on arm [1/10] [TCWG-647] Miscellaneous [1/10] -- Meetings, emails, discussions etc. == Plan == LLDB development -- Complete implementation and submit native Linux register context for Arm upstream -- Complete implementation and submit POSIX register context for Arm upstream -- Patch reviews and upstream commits. -- Start work on LLDB arm integration, testing and bug fixing. Miscellaneous -- Try LLDB armhf builds and figure out a way to do gcc 4.8 softfloat build.

10 years, 5 months

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[ACTIVITY] Week 13

by Prathamesh Kulkarni

== This Week == * TCWG-619: - LTO and non-LTO builds of v8 and chromium on x86, arm, and aarch64 native and x86->arm, x86->aarch64 cross. - LTO build for v8 on arm native and with x86->arm cross works with linaro-4.8, but not with linaro-4.9. Also appears to fail for trunk. - Issues in building chromium cross x86->arm - undefined reference to clock_gettime. * PR 49551 - Patch approved by Charles. == Next Week == - v8 LTO build with different lto options. - Investigate LTO build failure for v8 on arm. - LTO and non-LTO builds for chromium on x86, arm and aarch64. - Submit patch to PR49551 for upstream review after testing on x86, arm.

10 years, 5 months

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[ACTIVITY] 23-27 March 2015

by Christophe Lyon

== Progress == * Validation - worked on stabilization of abe and jenkins jobs * Backports - a few reviews * Misc - meetings, conf-calls, emails, ... == Next == * Validation: hopefully make the staging, then stable branches

10 years, 5 months

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[ACTIVITY]

by Renato Golin

== Progress == * Automation Framework (CARD-1378 5/10) - Moving LLVM lab into llvm.tcwglab subnet - Passing down my knowledge to the lab team - Helping them set up the new builders * Background (5/10) - Code review, meetings, discussions, etc. - Upgrading APM's compiler/binutils - Writing LLVM Getting started wiki page - Helping Adhemerval setup == Plan == * Go back working on LLVM

10 years, 5 months

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[ACTIVITY] Week 13

by Charles Baylis

== Progress == qemu-system experiment [4/10] Tried to set up qemu-system for reliable simulated validation of tests which don't work under qemu-user. Mostly works, but there is arcane interaction between DejaGNU, gcc testsuite and board files which make it a bit flakey. Interesting experiment, but I've dropped it for now as there still niggles to iron out. Misc [4/10] Patch review for Prathamesh Backporting stuff ABE bugzilla stuff Benchmarking results Emails/doc review about Lab infrastructure Holiday Friday [2/10] == Plans == Holiday Monday Investigate autovectorization Next backport

10 years, 5 months

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[ACTIVITY] 16 - 20 March 2015

by Omair Javaid

== Progress == LLDB development -- Implemented LLDB Arm SysV ABI classes [3/10] [TCWG-643] -- Implemented LLDB AArch64 SysV ABI classes [3/10] [TCWG-715] -- Started implementation of Arm native register context [1/10] [TCWG-650] -- Figure out steps to run lldb-remote testsuite on Arm and AArch64 [1/10] [TCWG-640] [TCWG-641] -- Try to build lldb-server natively on chromebook [1/10] [TCWG-647] Miscellaneous [1/10] -- Meetings, emails discussions. -- Updates to wiki pages for LLDB howtos == Plan == LLDB development -- Complete implementation and submit LLDB Arm SysV ABI classes upstream -- Complete implementation and submit LLDB AArch64 SysV ABI classes upstream -- Further progress on implementation of native register context -- Begin implementation of POSIX monitor register context for arm. Miscellaneous -- Migrate LLDB pages to collaborate.linaro

10 years, 5 months

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[ACTIVITY] 16th - 20th March

by Venkataramanan Kumar

ASAN/TSAN run on 42 bit VA Aarch64 with 64 bit allocators (TCWG-634) (6/10) * Juno does not have space for kernel allocator map demanded by ASAN, So we need to remain on 32 bit allocators only. * amd-01 went offline. So moved to internal machine in AMD. Debugging LLVM test failures in GDB showed that ASLR should be turned off and also the shadow offset is set at 1<<36 and is not changing when I fix it in asan_mappings.h file . Manually changing shadow offset to 1<<39 fixes some segfaults. Bug869: Continued to look at ABS_EXPR cases (2/10). * Emails, meetings. (2/10) * Linaro 1-1 with christophe, Ryan * AMD meetings/event, 1-1 with AMD manager, status meeting. * GCC mailing list. == Plan == *Continue to fix TSAN/ASAN 64 bit allocator failures on amd-01 . * Bug869

10 years, 5 months

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[ACTIVITY] Week 12

by Yvan Roux

== Issue == * none == Progress == * Infrastructure and Validation (1/10) - Validate staging builders, still some issues with guality tests * GCC Upstream (5/10) - PR64208 submitted a patch that fixes the LRA ICE for iwmmxt target. - PR63587 and PR64871 submitted patches that backport the fixes into FSF 4.9 branch. Patches approved, to be committed. * Release and Backports (3/10) - Finished Backflip improvements, dev branch merged into master. - Presented this new features, stacked backports process and conflict handling during our GCC team weekly meeting. * Linaro Bugzilla (-/-) - #1322 - Identified it as already resolved on our 4.8 branch. * Misc (110) - Various meetings == Plan == - Continue on upstream bugzillas, backports and validation.

10 years, 5 months

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[ACTIVITY] 16th - 20th March

by Bernie Ogden

catomics - TCWG-436 [6/10] * Started a series of runs on a local board I'd borrowed ** Then had to give it back before they'd really got anywhere * Got some, possibly dubious, results back from A15 from previous week ** If the results are worth anything, they suggest that catomics don't achieve anything * Started again with a subset of SPEC on juno-01, as it was on my desk for the weekend anyway ** Results again underwhelming ** Maybe I picked the wrong subset, maybe A57 is too smart Misc [4/10] * Including a little 'juno cache effects' followup, a little juno-01 work, and a lot of mail catchup =Plan= * Get back to benchmark automation ** Apply a bunch of small improvements I've got on a branch ** Get a working Jenkins backport benchmarking prototype ** Sort out sources/results storage * Think about why catomics may not be showing any effect ** Starting to believe that this is a red herring ** But might be interesting to try 'little' class cores ** But that does involve finding a reliable target I can hold for a long time

10 years, 5 months

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[ACTIVITY] 9th - 13th March

by Bernie Ogden

Juno cache effects - LDTS-1238 [6/10] * Seems to be mainly due to (expected) instruction scheduling limitations, and prefetcher effects * Reported back, hopefully this will wrap up now catomics - TCWG-436 [1/10] * Shepherding benchmark runs in LAVA, usual problems with ssh-agent, juno contention and random target failure * Almost no actual data produced benchmark automation - TCWG-360 [1/10] * User support, some discussion about extent of our juno usage * Something weird happened in Jenkins, _might_ have been a one-off due to slaves moving around Misc - [2/10] * Featuring juno-01 fixing

10 years, 5 months

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[Activity] Week 12

by Prathamesh Kulkarni

TCWG-619: - Cross compiled v8 on ARM using linaro toolchain (binary release). - Built chromium LTO native - Building v8 on ARM with LTO results in ICE at lto_tag_to_tree_code. - Buiilding v8 (without LTO) with linaro-4.9-branch results in ar error. - Cross compiling chromium on ARM with LTO using linaro toolchain segfaults ld - Using gcc-nm, gcc-ar works as a work-around for "plugin needed to handle lto object" error TCWG-621: - Finished refactoring sel-sched-ir.h * Bugs - PR49951: Modified patch to fix few test-cases. * Misc: - Internal college event on Saturday. == Next Week == - TCWG-619 - Test patch for PR49951 and submit upstream. - Refactor lra-int.h

10 years, 5 months

1
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[Weekly] 16-20 MAR 2015

by Michael Collison

== This week == * Backports (9/10) - 218432 - Clarify the usage of SCHED in AARCH64_CORE macro - 218635 - Change all AARCH64_FL_FPSIMD to AARCH64_FL_FOR_ARCH8. - 219470 - Implement TARGET_SCHED_MACRO_FUSION_PAIR_P - 219656 - Update APM/XGene-1 costs - 219657 - xgene1 machine description refactoring - 219659 - Updated copyright year for 'xgene1.md'. - 219661 - Update APM/XGene-1 description - 219679 - Fix xgene_tune initialization - Backports validated - 218007 - [1/5] Implement TARGET_SCHED_MACRO_FUSION_PAIR_P - 218010 - [2/5] Implement adrp+add fusion - 218012 - [sched-deps] Remove needless check for modified_in_p when trying to fuse two non-conditional jump insns - 218013 - [3/5] Implement fusion of MOVK+MOVK - 218014 - [4/5] Implement fusion of ARDP+LDR - 218525 -[5/5] Add macro fusion support for cmp/b.X for ThunderX * Misc (1/10) - Conference calls == Next week == - A17, A57 and A72 backports

10 years, 5 months

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[ACTIVITY] 16-20 March, 2015

by Kugan

== Progress == * type promotion pass (zero/sign extension elimination) - TCWG-547 (6/10) - Fixed LTO testcase failure - Native testing on arm chromebook found three more failures - Fixed all of them - Setup spec2006 on chromebook - spec2006 with -O3 -mfpu=neon -march=armv7-a -fno-common shows some (12 of them) regressions even though there are some gains (17 of them). - GEOMEAN is the same. - 437.leslie3d regresses 18% for -O3 but improves 16% if I use -O2 in both the original and with the patch - some optimizations like vectorization could be impacted (?) - restarted the full benchmarking at -O2 * TCWG-620 (1/10) - read more documents and looked at code samples * TCWG-486 (2/10) - Latest trunk didn’t work with the patch I had - Original patch Zhenqiang also behaves similar. Looking into it. * Misc (1/10) - gcc-patchs and gcc-bugs list == Plan == * TCWG-620 and TCWG-547

10 years, 5 months

1
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[ACTIVITY]

by Renato Golin

== Progress == * Thursday off (2/10) * Buildbots (CARD-1823 1/10) - Fixing llvm-apm-01 (disk problem) - Fixing llvm-d01-04 (my bad) * Releases (CARD-1431 1/10) - Spinning release 3.5.2 RC1, all green * Automation Framework (CARD-1378 3/10) - A lot of time wasted in infra shenanigans * Background (3/10) - Code review, meetings, discussions, etc. - Reviewing, testing and committing ARM11 patch by Tinti - Getting ircproxy to work - Broken bots a-plenty == Plan == * Fork LLVM lab out of TCWG * Zillions of patches to review * Continue target description changes * Welcome Adhemerval, setup LLD track * Catch up with Omair on LLDB

10 years, 6 months

1
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[ACTIVITY] 16-20 March, 2015

by Christophe Lyon

== Progress == * Validation - various improvements in our scripts and matrix coverage * Backports - tutorial on conflicts handling * Misc - meetings, conf-calls, emails, ... == Next == * Validation: - continue improvements and error checking

10 years, 6 months

1
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[ACTIVITY] 17th - 20th March

by Yao Qi

# Progress # * aarch64 gdb , TCWG-652, [7/10] ** TCWG-663, TCWG-680: closed, as patches are committed ** TCWG-681, TCWG-664: in progress, patches are posted upstream for review. The current FSF mainline GDB on aarch64-linux only has 46 FAILs in the remote testing! * arm gdb remote testing on pandaboard, [1/10] There are 3584 FAILs! Have no chance to triage them yet. * fsf gdb, [2/10] ** Clean up gdbarch method cannot_step_breakpoint. ** Take a look at the state of C++ move in GDB. Offer some help on this project. * misc [1/10] ** Meeting and internal trainings. # Plan # * Other cards under TCWG-652. * TCWG-682, Investigate on GDB/LLDB performance. * Write up some slides to help people understand what GDB can do for the incoming meeting. -- Yao

10 years, 6 months

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linaro-toolchain@lists.linaro.org

by praveen vattipalli

Hi all I am trying to compile poky-dizzy-12.0.1(MACHINE ?= "beaglebone") using meta-toolchain. so i downloaded dizzy from http://downloads.yoctoproject.org/releases/yocto/yocto-1.7. 1/poky-dizzy-12.0.1.tar.bz2 meta-linaro from https://git.linaro.org/openembedded/meta-linaro.git I have changed bblayers.conf as below # LAYER_CONF_VERSION is increased each time build/conf/bblayers.conf # changes incompatibly LCONF_VERSION = "6" BBPATH = "${TOPDIR}" BBFILES ?= "" BBLAYERS ?= " \ /home/praveenk/work/poky-dizzy-12.0.1/meta \ /home/praveenk/work/poky-dizzy-12.0.1/meta-yocto \ /home/praveenk/work/poky-dizzy-12.0.1/meta-yocto-bsp \ /home/praveenk/work/poky-dizzy-12.0.1/meta-linaro/meta-linaro-toolchain \ " BBLAYERS_NON_REMOVABLE ?= " \ /home/praveenk/work/poky-dizzy-12.0.1/meta \ /home/praveenk/work/poky-dizzy-12.0.1/meta-yocto \ I added required changes in local.conf MACHINE ?= "beaglebone" DEFAULTTUNE = "cortexa8hf-neon" PREFERRED_PROVIDER_glibc ?= "glibc" PREFERRED_VERSION_gcc ?= "linaro-4.9%" PREFERRED_VERSION_gcc-cross ?= "linaro-4.9%" PREFERRED_VERSION_gcc-cross-initial ?= "linaro-4.9%" PREFERRED_VERSION_gcc-cross-intermediate ?= "linaro-4.9%" PREFERRED_VERSION_gcc-cross-canadian ?= "linaro-4.9%" PREFERRED_VERSION_gcc-crosssdk ?= "linaro-4.9%" PREFERRED_VERSION_gcc-crosssdk-initial ?= "linaro-4.9%" PREFERRED_VERSION_gcc-crosssdk-intermediate ?= "linaro-4.9%" PREFERRED_VERSION_gcc-runtime ?= "linaro-4.9%" PREFERRED_VERSION_nativesdk-gcc-runtime ?= "linaro-4.9%" PREFERRED_VERSION_libgcc ?= "linaro-4.9%" PREFERRED_VERSION_nativesdk-libgcc ?= "linaro-4.9%" PREFERRED_VERSION_gcc-cross-canadian-${TRANSLATED_TARGET_ARCH} ?= "linaro-4.9%" but still it is building gcc-4.9 instead of gcc-linaro-4.9 below is the log WARNING: Could not copy license file COPYING: [Errno 2] No such file or directory: '/home/praveenk/work/poky-dizzy-12.0.1/build/tmp/work-shared/gcc-linaro-4.9-r2014.11/gcc-linaro-4.9-2014.11/COPYING' WARNING: Could not copy license file COPYING: [Errno 2] No such file or directory: '/home/praveenk/work/poky-dizzy-12.0.1/build/tmp/work-shared/gcc-linaro-4.9-r2014.11/gcc-linaro-4.9-2014.11/COPYING' WARNING: Could not copy license file COPYING3: [Errno 2] No such file or directory: '/home/praveenk/work/poky-dizzy-12.0.1/build/tmp/work-shared/gcc-linaro-4.9-r2014.11/gcc-linaro-4.9-2014.11/COPYING3' WARNING: Could not copy license file COPYING3: [Errno 2] No such file or directory: '/home/praveenk/work/poky-dizzy-12.0.1/build/tmp/work-shared/gcc-linaro-4.9-r2014.11/gcc-linaro-4.9-2014.11/COPYING3' WARNING: Could not copy license file COPYING3.LIB: [Errno 2] No such file or directory: '/home/praveenk/work/poky-dizzy-12.0.1/build/tmp/work-shared/gcc-linaro-4.9-r2014.11/gcc-linaro-4.9-2014.11/COPYING3.LIB' WARNING: Could not copy license file COPYING3.LIB: [Errno 2] No such file or directory: '/home/praveenk/work/poky-dizzy-12.0.1/build/tmp/work-shared/gcc-linaro-4.9-r2014.11/gcc-linaro-4.9-2014.11/COPYING3.LIB' WARNING: Could not copy license file COPYING.LIB: [Errno 2] No such file or directory: '/home/praveenk/work/poky-dizzy-12.0.1/build/tmp/work-shared/gcc-linaro-4.9-r2014.11/gcc-linaro-4.9-2014.11/COPYING.LIB' WARNING: Could not copy license file COPYING.LIB: [Errno 2] No such file or directory: '/home/praveenk/work/poky-dizzy-12.0.1/build/tmp/work-shared/gcc-linaro-4.9-r2014.11/gcc-linaro-4.9-2014.11/COPYING.LIB' WARNING: Could not copy license file COPYING.RUNTIME: [Errno 2] No such file or directory: '/home/praveenk/work/poky-dizzy-12.0.1/build/tmp/work-shared/gcc-linaro-4.9-r2014.11/gcc-linaro-4.9-2014.11/COPYING.RUNTIME' WARNING: Could not copy license file COPYING.RUNTIME: [Errno 2] No such file or directory: '/home/praveenk/work/poky-dizzy-12.0.1/build/tmp/work-shared/gcc-linaro-4.9-r2014.11/gcc-linaro-4.9-2014.11/COPYING.RUNTIME' ERROR: Function failed: do_configure (log file is located at /home/praveenk/work/poky-dizzy-12.0.1/build/tmp/work/cortexa9hf-vfp-neon-poky-linux-gnueabi/libgcc/linaro-4.9-r2014.11/temp/log.do_configure.26074) ERROR: Logfile of failure stored in: /home/praveenk/work/poky-dizzy-12.0.1/build/tmp/work/cortexa9hf-vfp-neon-poky-linux-gnueabi/libgcc/linaro-4.9-r2014.11/temp/log.do_configure.26074 Log data follows: | DEBUG: Executing python function sysroot_cleansstate | DEBUG: Python function sysroot_cleansstate finished | DEBUG: SITE files ['endian-little', 'bit-32', 'arm-common', 'common-linux', 'common-glibc', 'arm-linux', 'arm-linux-gnueabi', 'common'] | DEBUG: Executing shell function autotools_preconfigure | DEBUG: Shell function autotools_preconfigure finished | DEBUG: Executing python function autotools_copy_aclocals | DEBUG: Python function autotools_copy_aclocals finished | DEBUG: Executing shell function do_configure | 0 blocks | chmod: cannot access '/home/praveenk/work/poky-dizzy-12.0.1/build/tmp/work-shared/gcc-linaro-4.9-r2014.11/gcc-linaro-4.9-2014.11/libgcc/configure': No such file or directory | WARNING: exit code 1 from a shell command. | ERROR: Function failed: do_configure (log file is located at /home/praveenk/work/poky-dizzy-12.0.1/build/tmp/work/cortexa9hf-vfp-neon-poky-linux-gnueabi/libgcc/linaro-4.9-r2014.11/temp/log.do_configure.26074) ERROR: Task 692 (/home/praveenk/work/poky-dizzy-12.0.1/meta-linaro/meta-linaro-toolchain/recipes-devtools/gcc/ libgcc_linaro-4.9.bb, do_configure) failed with exit code '1'

10 years, 6 months

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error in compiling beagelbone using meta-linaro

by praveen vattipalli

Hi all I am trying to compile poky-dizzy-12.0.1(MACHINE ?= "beaglebone") using meta-toolchain. so i downloaded dizzy from http://downloads.yoctoproject.org/releases/yocto/yocto-1.7.1/poky-dizzy-12.… meta-linaro from https://git.linaro.org/openembedded/meta-linaro.git I have changed bblayers.conf as below # LAYER_CONF_VERSION is increased each time build/conf/bblayers.conf # changes incompatibly LCONF_VERSION = "6" BBPATH = "${TOPDIR}" BBFILES ?= "" BBLAYERS ?= " \ /home/praveenk/work/poky-dizzy-12.0.1/meta \ /home/praveenk/work/poky-dizzy-12.0.1/meta-yocto \ /home/praveenk/work/poky-dizzy-12.0.1/meta-yocto-bsp \ /home/praveenk/work/poky-dizzy-12.0.1/meta-linaro/meta-linaro-toolchain \ " BBLAYERS_NON_REMOVABLE ?= " \ /home/praveenk/work/poky-dizzy-12.0.1/meta \ /home/praveenk/work/poky-dizzy-12.0.1/meta-yocto \ I added required changes in local.conf MACHINE ?= "beaglebone" DEFAULTTUNE = "cortexa8hf-neon" PREFERRED_PROVIDER_glibc ?= "glibc" PREFERRED_VERSION_gcc ?= "linaro-4.9%" PREFERRED_VERSION_gcc-cross ?= "linaro-4.9%" PREFERRED_VERSION_gcc-cross-initial ?= "linaro-4.9%" PREFERRED_VERSION_gcc-cross-intermediate ?= "linaro-4.9%" PREFERRED_VERSION_gcc-cross-canadian ?= "linaro-4.9%" PREFERRED_VERSION_gcc-crosssdk ?= "linaro-4.9%" PREFERRED_VERSION_gcc-crosssdk-initial ?= "linaro-4.9%" PREFERRED_VERSION_gcc-crosssdk-intermediate ?= "linaro-4.9%" PREFERRED_VERSION_gcc-runtime ?= "linaro-4.9%" PREFERRED_VERSION_nativesdk-gcc-runtime ?= "linaro-4.9%" PREFERRED_VERSION_libgcc ?= "linaro-4.9%" PREFERRED_VERSION_nativesdk-libgcc ?= "linaro-4.9%" PREFERRED_VERSION_gcc-cross-canadian-${TRANSLATED_TARGET_ARCH} ?= "linaro-4.9%" but still it is building gcc-4.9 instead of gcc-linaro-4.9 Thanks Praveen

10 years, 6 months

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[ACTIVITY] 9 - 13 March 2015

by Omair Javaid

== Progress == LLDB development -- Got lldb-server executable running on aarch64 target but debug connection not working [1/10] [TCWG-640] -- Got lldb-server executable running on arm target [1/10] [TCWG-641] -- Started collecting missing pieces for arm lldb linux run control support [2/10] -- Written wiki pages for LLDB developer process [1/10] GDB Development -- Started writing tests for arm-gdb instruction recording [0.5/10] [TCWG-677] -- Started writing tests for aarch64-gdb instruction recording [0.5/10] [TCWG-517] Miscellaneous [3/10] -- Trying out 96board network setup with powered usb ethernet dongle -- Emails/Meetings etc -- Sick Day on Friday 13th March == Plan == More work for ARM and AArch64 support in LLDB Do some more work on arm/aarch64 gdb instruction recording tests

10 years, 6 months

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[ACTIVITY] 2 - 6 March 2015

by Omair Javaid

== Progress == LLDB Development -- Tried lldb-server cross build for AArch64 target on x86 host [1/10] [TCWG-640] -- Tried lldb-server cross build for ARM target on x86 host [4/10] [TCWG-641] GDB Development -- Started writing tests for arm-gdb instruction recording [3/10] [TCWG-677] -- Started writing tests for aarch64-gdb instruction recording [1/10] [TCWG-517] Miscellaneous [1/10] -- Some work on setting up 96board for testing lldb-server -- Emails/Meetings etc == Plan == More work for ARM and AArch64 support in LLDB Do some more work on arm/aarch64 gdb instruction recording tests

10 years, 6 months

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[ACTIVITY] 9 - 13th March

by Venkataramanan Kumar

* ASAN/TSAN run on 42 bit VA Aarch64 with 64 bit allocators (TCWG-634) (3/10) Tried various allocator sizes in juno, still fails. On amd-01, Debugging LLVM test failures in gdb. * Emails, meetings. (2/10) * Linaro 1-1 with christophe. status call. * AMD meetings/event, 1-1 with AMD manager, status meeting. * GCC mailing list. * AMD internal meeting (4/10) * Half day off on 12/3/2015(1/10) == Plan == *Continue TSAN/ASAN support look why 64 allocator on juno is failing . * Bug869

10 years, 6 months

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[ACTIVITY] 9 - 13 March

by Charles Baylis

== Progress == Off sick [4/10] Backporting [2/10] . unexpected conflicts and test failures meant that previous attempts were abandoned . will try again for 2015.04 Benchmarking [1/10] . one config failed, restarted in Jenkins . accessing Jenkins benchmarks still requires help from Bernie due to permissions Misc [3/10] . emails about bugs . meetings . verification of lab fixes

10 years, 6 months

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[ACTIVITY] Week 11

by Yvan Roux

== Issue == * none == Progress == * Infrastructure and Validation (2/10) - Fixed GCC version handling in ABE (it enables FSF 4.9 validation) - Investigated and fixed md5sum update in snapshot dir (PR #1309) * Upstream bugzilla (2/10) - Fixed PR 61207 (Linaro PR #1314) Backported r220489 into FSF 4.9. - Prepared other backports into FSF 4.9 * Release and Backports (4/10) - Merged FSF 4.9 branch into Linaro 4.9 - Released Linaro 4.9-2015.03 source tarball - Backflip improvements * Misc (2/10) - Various meetings == Plan == * Continue Backlfip improvements * Upstream bugzilla

10 years, 6 months

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[Weekly] 09-13 FEB 2015

by Michael Collison

== This week == * Activity for 2015.03 release (2/10) * Backports (5/10) - 217229 and 216220 - Investigating dependencies - Local backports and build only - 218007 - [1/5] Implement TARGET_SCHED_MACRO_FUSION_PAIR_P - 218010 - [2/5] Implement adrp+add fusion - 218012 - [sched-deps] Remove needless check for modified_in_p when trying to fuse two non-conditional jump insns - 218013 - [3/5] Implement fusion of MOVK+MOVK - 218014 - [4/5] Implement fusion of ARDP+LDR - 218525 -[5/5] Add macro fusion support for cmp/b.X for ThunderX * Evaluated Boost.Simd C++ Library (2/10) * Misc (1/10) - Conference calls == Next week == - Validate fusion backports - Backport a72, a57 and a17 support and resolve dependencies with fusion backports - Complete additional backports

10 years, 6 months

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[ACTIVITY] 9-13 March 2015

by Kugan

== Progress == * Linaro bugs (2/10) #1325 * type promotion pass (zero/sign extension elimination) - TCWG-547 (5/10) - tried to improve some of the aspects and made it more aggressive - improved handling of CASE_CONVERT - tried it on CoreMark and it reduces the number of instructions in per object file basis. - bootstrapped the latest improvement on x86-64 and regression tested on x86-64, ARM and AARCH64. noticed few LTO failures on ARM and AARCH64. Looking into it. - Plan to run spec2k again - Current version at linaro-dev/type-promotion-pass (https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=refs/heads/linaro-dev/typ…) * Misc (1/10) - gcc-patchs and gcc-bugs list * Public Holiday (2/10) == Plan == * TCWG-620 and TCWG-547

10 years, 6 months

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[Activity] Week 11

by Prathamesh Kulkarni

== This week == * TCWG-619: - Cross compiled chromium for ARM without LTO - Ran into issues with native and ARM lto build of chromium * GCC Modularization Project: * TCWG-621: - Begun refactoring sel-sched-ir.h * TCWG-639: - Fixed issue with header flattening script. * Bugs: - 1178: Another triage, got reviewed from Charles. * Backports: - r218232, r218525. == Next week == * Continue investigating LTO build issues on ARM and x86. * submit patch to 1178 upstream. * Target hook conversion

10 years, 6 months

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[ACTIVITY]

by Renato Golin

== Progress == * Automation Framework (CARD-1378 4/10) - Restarting more dead machines - Discussing more infrastructure - Investigating PDU deamon * Maintenance (CARD-1833 4/10) - Making the case for all table-gen files to be built - This would allow us to create TargetDescription - Which would ease target-specific knowledge on all tools - And common up the parser for fpu/cpu/arch features - Adding commit message guidelines to developer policy * Background (4/10) - Code review, meetings, discussions, etc. - Discussions about CMake, options, etc - Cleaning up gateway, moving LLVM services to llvm server - Making serial connections work for LLVM machines - Fiddling with HiKey board == Plan == * Continue TargetDescription changes * Continue PDU investigations * Move serial to abe, so we can work around auth issues

10 years, 6 months

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[ACTIVITY] 9th - 13th March

by Yao Qi

# Progress # * aarch64 gdb , TCWG-652, [6/10] ** TCWG-663: Patches are posted upstream for review. Bernie gives me a pandaboard and set it up. I can do HW breakpoint testing for both aarch64 and arm. ** TCWG-670: Patch is posted upstream for review. Takes some time to understand aarch64 syscall name and number. ** Write some bash scripts to test my gdb patches. * fsf gdb patch review [2/10] ** Review and approve catch syscall code refactor. * misc [2/10] ** two meetings. # Plan # * Other cards under TCWG-652. * Investigate on GDB/LLDB performance. * TCWG-660: Teach ABE to import systemtap and build glibc with --enable-systemtap. -- Yao

10 years, 6 months

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[ACTIVITY] 9-13 March 2015

by Christophe Lyon

== Progress == * 2015.03 release: (1/10) - reviews (backports, branch merge) * Validation: (5/10) - reports improvements - working on validation matrix coverage improvement * GCC FSF trunk & 4.9 monitoring * Misc (4/10) - meetings, conf-calls, emails, ... == Next == * Validation: - matrix coverage - better handling of unstable tests * Backports: - improve review tool - tutorial on conflicts handling

10 years, 6 months

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[ANNOUNCE] Linaro GCC 4.9 2015.03

by Yvan Roux

The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2015.03 engineering release of the Linaro GCC 4.9 source package. Linaro GCC 4.9 2015.03 is the twelfth Linaro GCC source package release in the 4.9 series. It is based on FSF GCC 4.9.3-pre+svn221341 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 engineering[2] releases. Interesting changes in this GCC source package release include * Linaro bugzilla PR fixed : #1149, #1291, #1314 * Updates to GCC 4.9.3-pre+svn221341 * Backport of PR tree-optimization/61607 * Backport of PR tree-optimization/64878 * Backport of PR bootstrap/63204 * Backport of PR ipa/63196 * Backport of PR tree-optimization/64083 * Backport of PR tree-optimization/64284 * Backport of PR middle-end/64246 * Backport of Abstract away marking loops for removal * Backport of Sanity check removed loops * Backport of [AArch64] Tighten predicates on SIMD shift intrinsics * Backport of [AArch64] Wire up vqdmullh_laneq_s16 and vqdmullh_laneq_s32 * Backport of [AArch32/AArch64] Improve modeled latency between FP operations and FP->GP register moves * Backport of [AArch64] Adjust generic move costs * Backport of [AArch64] Add range-check for Symbol + offset addressing * Backport of [AArch64] Add vector pattern for __builtin_ctz * Backport of [AArch64] Bics instruction generation for aarch64 * Backport of [AArch64] additional bics patterns * Backport of [AArch64] Fix wrong-code bug in right-shift SISD patterns * Backport of [Haifa Scheduler] Fix latent bug in macro-fusion/instruction grouping * Backport of [testsuite] Fix vaddl and vaddw tests * Backport of [testsuite] revert changes on check_effective_target_arm_*_ok * Backport of [testsuite] new set of Neon intrinsics tests * Backport of [testsuite] fix vbic/vorn Neon tests * Backport of [testsuite] Add explicit dependency on Neon Cumulative Saturation flag * Backport of [testsuite] Be more verbose, and actually confirm that a test was checked. * Backport of [testsuite] Add vld1_lane tests * Backport of [testsuite] Add vldX_dup test. * Backport of [testsuite] Add vmla and vmls tests. * Backport of [testsuite] Add vmla_lane and vmls_lane tests. * Backport of [testsuite] Add vtrn tests. Refactor vzup and vzip tests. * Backport of [testsuite] Add vmlal and vmlsl tests. * Backport of [testsuite] Add vmlal_lane and vmlsl_lane tests. * Backport of [testsuite] Add vmlal_n and vmlsl_n tests. * Backport of [testsuite] Add vqdmlal and vqdmlsl tests. * Backport of [testsuite] Add vqdmlal_lane and vqdmlsl_lane tests * Backport of [testsuite] Add vqdmlal_n and vqdmlsl_n tests. * Backport of [testsuite] Add vsli_n and vsri_n tests. * Backport of [testsuite] Add vsubl tests, put most of the code in common with vaddl in vXXXl.inc. * Backport of [testsuite] Add vsubw tests, putting most of the code in common with vaddw * Backport of [testsuite] Add vmovn tests. * Backport of [testsuite] Add vmul_lane tests. * Backport of [testsuite] Add vmul_n tests. * Backport of [testsuite] Add vmull tests. * Backport of [testsuite] Add vmull_lane tests. * Backport of [testsuite] Add vmull_n tests. * Backport of [testsuite] Add vqdmulh tests. * Backport of [testsuite] Add vqdmulh_lane tests. * Backport of [testsuite] Add vqdmulh_n tests. * Backport of [testsuite] Add vqdmull tests. * Backport of [testsuite] Add vqdmull_lane tests. * Backport of [testsuite] Add vqdmull_n tests. * Backport of [testsuite] Add vsubhn, vraddhn and vrsubhn tests. * Backport of [testsuite] Add vmla_n and vmls_n tests. * Backport of [testsuite] Add vpadd, vpmax and vpmin tests. * Backport of [testsuite] Add vmovl tests. * Backport of [testsuite] Add vmnv tests. * Backport of [testsuite] Add vpadal tests. * Backport of [testsuite] Add vpaddl tests. * Backport of [testsuite] Add vmax, vmin, vhadd, vhsub and vrhadd tests. The release tarball will be available on: http://releases.linaro.org/ 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 bugzilla against GCC product: http://bugs.linaro.org/enter_bug.cgi?product=GCC * 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, 6 months

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[ANNOUNCE - RESPIN] Linaro GCC 4.9 2015.01-1

by Yvan Roux

Hi, Linaro GCC 4.9 2015.01 source package has been respun and deployed on: http://releases.linaro.org/15.01/components/toolchain/gcc-linaro/4.9 This package release contains two fixes for Linaro bugzilla's PR: * #1291 - ICE (segmentation fault) on arm-linux-gnueabihf * #1314 - ICE (in in expand_expr_addr_expr_1, at expr.c:7634) on arm-linux-gnueabihf You can find the original 2015.01 announcement below Regards, Yvan --------------------------------------------------------------------------------------------------------------------- The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2015.01 engineering release of the Linaro GCC 4.9 source package. Linaro GCC 4.9 2015.01 is the tenth Linaro GCC source package release in the 4.9 series. It is based on FSF GCC 4.9.3-pre+svn219502 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 engineering[2] releases. Interesting changes in this GCC source package release include * Linaro bugzilla PR fixed : #902 * Updates to GCC 4.9.3-pre+svn219502 * Backport of [AArch64] Support SISD variants of SCVTF,UCVTF * Backport of [AArch64] Fix ICE in aarch64_float_const_representable_p * Backport of [AArch64] Switch to sched-pressure by default. * Backport of [AArch64] Add scheduler for ThunderX * Backport of [AArch64] Remove crypto extension from default for cortex-a53, cortex-a57 * Backport of [AArch64] doloop pattern for -fmodulo-sched * Backport of [AArch32] Add execution tests of ARM REV intrinsics. * Backport of [AArch32] Post-indexed addressing for NEON memory access * Backport of [AArch32] Improve 64 bit division performance (serie) * Backport of [AArch32] Revert 215321 backport. * Backport of [AArch32/AArch64] Add ACLE 2.0 predefined macros * Backport of PR tree-optimization/54742 - extend jump thread for finite state automata * Backport of PR target/61997 - cc1plus ICE with aarch64 target using PCH and builtin functions * Backport of PR target/63724 - Fix up BSL expander for floating point types * Backport of [LRA] Relax one gcc_assert in lra-eliminate for fixed register * Backport of Add clobber_reg function 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 bugzilla against GCC product: http://bugs.linaro.org/enter_bug.cgi?product=GCC * 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, 6 months

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[ACTIVITY] 3rd - 6th March

by Kugan

== Progress == * Linaro bugs (6/10) #1291 #1293, #1314 * Home PC crashed and required hardware upgrade and software re-installation (2/10) * Improve register allocation for AArch64 (TCWG-620) - (1/10) - preparations for benchmarking of proposed changes * Misc (1/10) - gcc-patchs and gcc-bugs list == Plan == * TCWG-620 and TCWG-547

10 years, 6 months

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[ACTIVITY] 2nd - 6th March

by Venkataramanan Kumar

* ASAN/TSAN run on 42 bit VA Aarch64 with 64 bit allocator (TCWG-634) (5/10) * Bug 869 (2/10) * Bug 1266(1/10) * Emails, meetings. (2/10) * Linaro 1-1 with christophe. status call. * AMD meetings/event, 1-1 with AMD manager, status meeting. * GCC mailing list. == Plan == * TSAN/ASAN support look why 64 allocator on juno is failing . * Look at ASAN failures if 64 allocator is enabled on amd-01. * AMD internal meeting on Tuesday and Wednesday

10 years, 6 months

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[ACTIVITY]

by Renato Golin

== Progress == * Automation Framework (CARD-1378 5/10) - Setting up new servers * Background (5/10) - Code review, meetings, discussions, etc. - Updating some LLVM dev scripts - Adding tools checks to LNT - EuroLLVM Paper selection - LLDB/ARM meetings - Bisecting lots of failures in all bots == Plan == Go back developing LLVM for a change...

10 years, 6 months

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