- linaro-toolchain - lists.linaro.org

[Activity] 18 May 2015 -- 22 May 2015

by Yao Qi

# Issues # * Don't have arm board to run native gdb testsuite (my pandaboard is too slow to run native tests). Get a chromebook, but takes a lot of time installing ubuntu on it. Network still doesn't work, don't know how much time are still needed to fix networking issues. # Progress # * Linaro GDB ** TCWG-517, GDB AAarch64 record/replay. [3/10] These bits are finally posted upstream. The review looks good. ** TCWG-805, aarch64 native debugging multi-arch support. [4/10] *** Switch to PTRACE_GETREGSET and PTRACE_SETREGSET. Patches are done, but takes much time to set up GDB native testing env, as linaro tcwglab is still unreachable. Install ubuntun 14.02 on chrombook. Done, but network driver doesn't work. ** Give my input on GDB kernel awareness. ** Tweak pandaboard for native gdb testing. Done. ** AArch64 debugging on different ELs, a meeting is scheduled in the sprint but I ask more details before that meeting. * FSF GDB [1/10] ** Review a patch about arm abi detection for ELFOSABI_GNU. Approve it. ** Review a patch about compile feature in GDB. * Misc [2/10] ** Go to London for France Visa application on Monday and get visa on Thu. # Plan # * TCWG-517, GDB AAarch64 record/replay. Address review comments and push them in. * TCWG-805, aarch64 native debugging multi-arch support. Set up chromebook and test my patches on it. -- Yao

10 years, 11 months

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[ACTIVITY] 18-22 May 2015

by Christophe Lyon

== Progress == * Neon intrinsics tests (5/10) - committed a series - started working on hopefully final set * 4-.8-2015.04 - src release done * Validation (1/10) - looking at tests instabilities * Misc (4/10) - meetings, conf-calls, emails, ... == Next == * Neon intrinsics tests * Validation

10 years, 11 months

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[ACTIVITY] 18th - 22nd May

by Bernie Ogden

Holiday Thursday afternoon and Friday [3/10] Benchmark automation - TCWG-360 [4/10] * CPU2006 patches cleaned up, submitted * A few other small fixes Misc [3/10] * ~1/10 getting a Juno running =Plan= Holiday next week, then: Pick a direction on streaming vs listeners, write down the reasoning Follow up (close out?) results storage and restricted targets Write more tests, refactoring where appropriate Investigate running benchmarks through ci.linaro.org If time, and it looks sane, wrap a LAVA job around benchmark scripts

10 years, 11 months

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[ACTIVITY] 11 - 15 May 2015

by Omair Javaid

== Progress == LLDB development -- Submitted and committed AArch64 hardware watchpoint/breakpoint support [2/10] [TCWG-771] -- Submitted Arm hardware watchpoint/breakpoint support [1/10] [TCWG-770] -- Debugged arm watchpoints on Nexus 7 Android device. [2/10] [TCWG-651] Miscellaneous [5/10] -- Submitted AArch64 gdb record-replay patches -- Travel to Islamabad for interview at French Embassy -- Meetings, emails, discussions etc. == Plan == LLDB development -- Fix issues with hardware watchpoints and try to run tests on Nexus 7 -- Update and resubmit Arm hardware watchpoint patch.

10 years, 11 months

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[ACTIVITY] Week 20

by Prathamesh Kulkarni

== This week == * TCWG-619 (2/10) - Disabling seccomp-bpf, works with LTO build for chromium for multiple partitions (-flto-partitions={balanced, 1to1}) - disabling fPIC does not prevent the error - "branch out of range" for single or no partition (--param lto-partitions=1 / -flto-partitions=none ) - The docs say there is option to disable PLT (-fno-plt), https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html#Code-Gen-Options but using it results in unrecognized command line option. * PR49551 (2/10) - Found out why r221297 prevents the ICE: merge_decl() calls make_decl_rtl() upon condtion DECL_RTL_SET_P (olddecl), which causes the ICE. Before r221297, in merge_decls() DECL_RTL_SET_P (olddecl) was true which resulted in call to make_decl_rtl() causing ICE. After r221297, DECL_RTL_SET_P (olddecl) is 0, which doesn't result in call to make_decl_rtl() so no ICE is produced. However, DECL_COMMON is still incorrectly set in merge_decls() because it copies newdecl into olddecl. - Will post upstream for review after final testing on x86 and ARM. * Misc (6/10) - Exams

10 years, 11 months

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[ACTIVITY] Week 20

by Yvan Roux

Short week (2 days off) == Progress == o Upstream GCC (3/6) * Flags for Cortex-a53 erratum #84341 workaround: - Backported into FSF 4.9 and 5 branches * Some cleanup to avoid format-security warnings * TCWG-786 (LRA and PIC): Look for potential improvements - nothing found so far. o Linaro GCC release (2/6) * Reviewed FSF branch merge into 4.8 branch * Look at differences between our actual source tarball, and the ones that can be created by ABE. o Misc (1/6) * Various meetings == Plan == - Continue ongoing tasks

10 years, 11 months

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[ACTIVITY] 11th - 15th May

by Bernie Ogden

Benchmark automation - TCWG-360 [7/10] * Convinced benchmark scripts to run entirely within LAVA * Did a couple of benchmark runs for Kugan * Cleaned up my CPU2000 patches and committed to central repository Misc [3/10] =Plan= Clean up, commit CPU2006 patches Pick a direction on streaming vs listeners, write down the reasoning Follow up (close out?) results storage and restricted targets Write more tests, refactoring where appropriate If time, and it looks sane, wrap a LAVA job around benchmark scripts

10 years, 11 months

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[Weekly] 11-15 MAY 2015

by Kugan

== Progress == * Upstream GCC (5/10) - committed delaying constant splitting in arm after full testing (TCWG-486) - Spec benchmarking is still an issue (TCWG-779) - Bernie agreed to kindly help benchmark it - taking time due to long lava queue - Started working on widening pass based on review comments (TCWG-555) - Wilco from ARM provided some test-cases and looking into it as well * GCC bootstrap/build issues (4/10) - Looked at bare-metal - aarch-elf-none issue - gcc bootstrap issue with ARM - middle-end error - Thanks to all, all now fixed in mainline. * Misc (1/10) - gcc-patches, gcc-bugs list - Meetings == Plan == - Continue with gcc stage1 activities - Look at register allocation

10 years, 11 months

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[Weekly] 11-15 MAY 2015

by Michael Collison

* TCWG-140 - Transform end of loop conditions to min_expr (3/10) - Investigation into blueprint and patch * TCWG-146 - Detect smin/umin idiom (2/10) - Applied patch which generates improved code. Validation required. * Illness (4/10) * Misc (1/10) - Conference calls == Next week == - Work TCWG-146 and TCWG-1140

10 years, 11 months

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[ACTIVITY]

by Renato Golin

== Progress == * Releases (CARD-1431 4/10) - Testing 3.6.1 on ARM, green - Re-flashing LLVM APM due to crash - Testing 3.6.1 on AArch64, green * Maintenance (CARD-1833 2/10) - Fixing enum vs. macro conflicts (PR23482) - Working on FIXMEs to TargetParser (Triple) * Background (4/10) - Code review, meetings, discussions, etc. - More stride vectorizer reviews (D9368) - Register ops from ACLE reviews (D9699/D9697) - Sourcing boards to new developers - Self-hosting buildbot failures, still investigating. == Plan == * Bisect and revert patch that broke SH bots * Continue target parser changesg * Continue 3.6.1 release * Continue reviewing stride vectorizer changes

10 years, 11 months

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[Activity] 11 May 2015 -- 15 May 2015

by Yao Qi

# Progress # * TCWG-517, GDB AAarch64 record/replay. Ongoing. [3/10] Takes over from Omair, complete test cases and update patches. Rewrite the test case using gcc inline assembly. Happen to see that AAarch64 doesn't have CPSR register but GDB thinks it has. This should be fixed separately later. * Think about GDB version in next linaro toolchain release. [3/10] The next linaro release is on July/Aug and the next GDB FSF release 7.10 will be on mid of June. I prefer to picking up 7.10, but need Ryan or Maxim to make a decision. * Exchange emails with Peter to push GDB kernel awareness work forward, and think about how do that in next step. [1/10] * Misc [3/10] ** Print and photocopy documents needed for France visa application. # Plan # * Go to France Embassy in London on Monday. * GDB AAarch64 record/replay test and upstream submission. -- Yao

10 years, 11 months

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Re: 502 connecting to abe.tcwglab.linaro.org

by Virendra Kumar Pathak

Hi, I tried on abe 'stable' branch and with below configuration build was successful. ../abe/configure --with-fileserver=148.251.136.42 --with-remote-snapshots= http://148.251.136.42/snapshots-ref ../abe/abe.sh --target aarch64-linux-gnu --build all (Additionally I had to increase the wget_timeout=100) But on master branch, with below commands (as suggested in above mail) following error were observed. ../abe/configure --with-fileserver=148.251.136.42 --with-remote-snapshots=/snapshots-ref ../abe/abe.sh --target aarch64-linux-gnu --build all ERROR (#144): fetch_http (md5sums doesn't exist and you disabled updating.) Looks like following commit is causing problem on the abe master branch. On removing it, build successfully downloaded the packages from 148.251.136.42. commit 5a5ab3582851d52d903846d34c79850f5d7ebda5 don't try to fetch anything is updates are disabled. Thanks Virendra On 6 May 2015 at 17:30, <linaro-toolchain-request(a)lists.linaro.org> wrote: > Send linaro-toolchain mailing list submissions to > linaro-toolchain(a)lists.linaro.org > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.linaro.org/mailman/listinfo/linaro-toolchain > or, via email, send a message with subject or body 'help' to > linaro-toolchain-request(a)lists.linaro.org > > You can reach the person managing the list at > linaro-toolchain-owner(a)lists.linaro.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of linaro-toolchain digest..." > > > Today's Topics: > > 1. Re: 502 connecting to abe.tcwglab.linaro.org (Tim Entinger) > 2. Re: 502 connecting to abe.tcwglab.linaro.org (Victor Chong) > 3. [ANNOUNCE] Linaro GCC 4.9 2015.04 snapshot re-spin (Yvan Roux) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 5 May 2015 12:44:44 +0000 (UTC) > From: Tim Entinger <timothy.entinger(a)jci.com> > To: linaro-toolchain(a)lists.linaro.org > Subject: Re: 502 connecting to abe.tcwglab.linaro.org > Message-ID: <loom.20150505T143929-367(a)post.gmane.org> > Content-Type: text/plain; charset=us-ascii > > Rob Savoye <rob.savoye@...> writes: > > > > > On 04/21/2015 04:23 PM, Christopher Covington wrote: > > > 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 > > > > We're having a major security related issue, so the entire TCWG lab > > got taken offline yesterday till this is fixed and more secured. No > idea > > what the ETA is for all of that. ABE will work regardless other than > > some warning messages about not being able to download the md5sums > file, > > or anything under 'infrastructure'. Most of what ABE needs is at > > git.linaro.org, and that's still online. The only files ABE downloads > > from abe.tcwglab.linaro.org are source tarballs, which don't change > very > > often. As long as you have them already downloaded, you can build a > > toolchain still. I work offline pretty frequently, so have tried to > make > > ABE work without the upstream access to anything. > > > > Try adding '--disable update' to your command line for abe.sh, and > > it'll stop trying. > > > > - rob - > > > > _______________________________________________ > > linaro-toolchain mailing list > > linaro-toolchain <at> lists.linaro.org > > https://lists.linaro.org/mailman/listinfo/linaro-toolchain > > > > > Is there any update for when the TCWG lab will be back online? I was > trying to use ABE for the first time and got the 503 Service Unavailable > message. Is there a way to specify different locations for the source > tarballs in the meantime? I'm hoping to work around the issue if a > timeline is still unknown. > > > > ------------------------------ > > Message: 2 > Date: Tue, 5 May 2015 23:12:28 +0900 > From: Victor Chong <victor.chong(a)linaro.org> > To: Tim Entinger <timothy.entinger(a)jci.com> > Cc: Linaro Toolchain Mailman List <linaro-toolchain(a)lists.linaro.org> > Subject: Re: 502 connecting to abe.tcwglab.linaro.org > Message-ID: > <CAHqM-QhhZw9hw33Mzf8iFtSDEdiX3NnLUMqvLt=v9JKHZgfa= > Q(a)mail.gmail.com> > Content-Type: text/plain; charset="iso-8859-1" > > Hi Tim, > > On Tue, May 5, 2015 at 9:44 PM, Tim Entinger <timothy.entinger(a)jci.com> > wrote: > > > Rob Savoye <rob.savoye@...> writes: > > > > > > > > On 04/21/2015 04:23 PM, Christopher Covington wrote: > > > > 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 > > > > > > We're having a major security related issue, so the entire TCWG lab > > > got taken offline yesterday till this is fixed and more secured. No > > idea > > > what the ETA is for all of that. ABE will work regardless other than > > > some warning messages about not being able to download the md5sums > > file, > > > or anything under 'infrastructure'. Most of what ABE needs is at > > > git.linaro.org, and that's still online. The only files ABE downloads > > > from abe.tcwglab.linaro.org are source tarballs, which don't change > > very > > > often. As long as you have them already downloaded, you can build a > > > toolchain still. I work offline pretty frequently, so have tried to > > make > > > ABE work without the upstream access to anything. > > > > > > Try adding '--disable update' to your command line for abe.sh, and > > > it'll stop trying. > > > > > > - rob - > > > > > > _______________________________________________ > > > linaro-toolchain mailing list > > > linaro-toolchain <at> lists.linaro.org > > > https://lists.linaro.org/mailman/listinfo/linaro-toolchain > > > > > > > > > Is there any update for when the TCWG lab will be back online? I was > > trying to use ABE for the first time and got the 503 Service Unavailable > > message. Is there a way to specify different locations for the source > > tarballs in the meantime? I'm hoping to work around the issue if a > > timeline is still unknown. > > > > We've setup an alternate server for the source tarballs for now. Configure > master with '--with-fileserver=148.251.136.42 > --with-remote-snapshots=/snapshots-ref' to use it. > > > > > > _______________________________________________ > > linaro-toolchain mailing list > > linaro-toolchain(a)lists.linaro.org > > https://lists.linaro.org/mailman/listinfo/linaro-toolchain > > >

10 years, 11 months

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Correct linux kerenl for eglibc in Linaro tool chain

by Ganesan, Aravind

Hi Guys, I have two questions: (1) I have download gcc-4.9 tool chain from http://releases.linaro.org/14.08/components/toolchain/binaries. The kernel for the release (http://releases.linaro.org/14.08/components/kernel/linux-linaro) is 3.16. So can we assume the kernel headers found in the tool chain installation from the link above belongs to linux version 3.16? (2) Also, I ubuntu wiki indicates that starting with Ubuntu 12.04 they are using linaro gcc packages for arm64 (https://wiki.ubuntu.com/ToolChain). Is there an easy way to find what linaro-release (for tool chain) will be compatible with Ubuntu 14.10 aarch64 image? Thanks, Aravind -- Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project

10 years, 11 months

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[ACTIVITY] 11-15 May 2015

by Christophe Lyon

Short week (off Thu/Fri - 4/10) == Progress == * GCC trunk (1/10) - investigated bare-metal broken builds for aarch64 and arm (--with-mode=thumb) Setting LDFLAGS_FOR_TARGETS=-specs=rdimon.specs fixes the libstdc++ build problem for aarch64. Not sure if that's expected. * Neon intrinsics tests (2/10) - submitted a new set of tests for review * 4.8-2015.04 - branch merge committed after validation * Validation (1/10) - looking at tests instabilities * Misc (2/10) - meetings, conf-calls, emails, .... == Next == * Neon intrinsics tests * GCC trunk/bare metal * Validation

10 years, 11 months

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[ACTIVITY] 4 - 8 May 2015

by Omair Javaid

== Progress == LLDB development -- Finished most of work for ARM watchpoints and hardware breakpoints [3/10] [TCWG-770] -- Added hardware breakpoint handlers for AArch64 [1/10] [TCWG-771] -- Debugging for ARM watchpoints not hitting the hardware watchpoint Set/Clear handlers. [3/10] [TCWG-770] -- Setting up development environment on Google Nexus 7 Android device. [1/10] Miscellaneous [2/10] -- Meetings, emails, discussions etc. -- Submission of French visa application == Plan == LLDB development -- Submit ARM and AArch64 hardware breakpoint and watchpoints code for review -- Fix issues with hardware watchpoints and try to run tests on Nexus 7 -- Figure out debugging using gdb on Nexus 7 Miscellaneous -- Travel to Islamabad for visa interview, out of office on wednesday 13th May 2015. -- Half day out of office on Monday 11th and Tuesday 12th May due to power outage in the area.

10 years, 11 months

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[ACTIVITY]

by Renato Golin

== Progress == * Public holiday on Monday (2/10) * Automation Framework (CARD-1378 1/10) - Debugging / Setting up VPN to the lab - Investigating APM crash * Releases (CARD-1431 1/10) - Reviewing patches for 3.6.1, some failures * Maintenance (CARD-1833 3/10) - Unifying ARM target parser * Background (3/10) - Code review, meetings, discussions, etc. - Lots of patch reviews, mainly stride vec. - Checking libunwind breakages == Plan == * Continue target parser changes * Continue 3.6.1 release * Continue reviewing stride vectorizer changes

10 years, 12 months

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[ACTIVITY] 4-8 May 2015

by Christophe Lyon

Short week: Friday off == Progres == * Linaro-GCC 4.8-2015.04 - have to redo the fsf-4.8 branch merge - results stability issue, probably caused by a race condition in the testsuite similar to one already fixed by Maxim * Validation - a few updates to our jobs on ci.linaro.org * Neon intrinsics tests - resumed port of existing testsuite to GCC * Misc - meetings, conf-calls, emails, .... == Next == Short week (Thu/Fri off) * Linaro-GCC-4.8-2015.04 * Neon intrinsics tests

10 years, 12 months

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[ACTIVITY] Week 19

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, 12 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, 12 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, 12 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, 12 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, 12 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, 12 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, 12 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, 12 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.

11 years

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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

11 years

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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.

11 years

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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

11 years

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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

11 years

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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

11 years

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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

11 years

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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

11 years

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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)

11 years

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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

11 years

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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

11 years

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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

11 years

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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

11 years

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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

11 years

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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

11 years

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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

11 years

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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

11 years

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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

11 years

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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)

11 years

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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

11 years

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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

11 years

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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

11 years

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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

11 years

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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

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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.

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