- linaro-toolchain - lists.linaro.org

abe - compiling cross aarch64 toolchain using local directory

by Virendra Kumar Pathak

Hi Linaro Toolchain Group, I am trying to compiling cross aarch64-linux-gnu toolchain using local directory (tar file) for gcc. I am using file:/// as mentioned in the https://wiki.linaro.org/ABE. ../abe/abe.sh --target aarch64-linux-gnu --build all --release 20150819 --tarbin gcc=file:///home/vpathak/arm/toolchain/build/snapshots/gcc-2015.11-5.tar.bz2 But I get following error: ERROR (#146): get_URL (not supported for .tar.* files.) ERROR (#533): get_source (file:///home/vpathak/arm/toolchain/build/snapshots/gcc-2015.11-5.tar.bz2 not a valid sources.conf identifier.) TRACE(#190): checkout () ERROR (#193): checkout (No URL given!) ERROR (#161): checkout_all (Failed checkout out of gcc.) Am I missing something ? How can we use a local directory (e.g. gcc source code) for building toolchain using abe ? Please help. Thanks. -- with regards, Virendra Kumar Pathak

10 years, 8 months

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[ACTIVITY] 10 - 14 August 2015

by Omair Javaid

== Progress == LLDB development -- Testing and bug fixing lldb on hikey AArch64 [TCWG-886] [7/10] -- Submitted following fixes and got them reviewed -- http://reviews.llvm.org/D11899 -- http://reviews.llvm.org/D11902 -- http://reviews.llvm.org/D11987 Miscellaneous [3/10] -- Meetings, emails, discussions etc. -- 14th August Public Holiday == Plan == LLDB development -- Further progress on fixing test failues on hikey AArch64. -- Testsuite status compilation for armel and armhf

10 years, 8 months

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[ACTIVITY] 10-14 August 2015

by kugan

== Progress == * Short week due to GNU Cauldron Travel * Widening pass (TCWG-547) - 3/10 - Looked at the false positive warning for uninitialized variable - Have a reduced test-case and looking at ways to fix this - Split the patch for easy review - Fixed test-cases and going through all the test-case failures * Misc - 2/10 - gcc-patches, gcc-bugs list - Looked at gcc vectorization == Plan == - Widening pass

10 years, 8 months

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[ACTIVITY] Week 33

by Yvan Roux

== Progress == o Linaro GCC validation (4/10) * Validation issues investigation * Austin's APM board seems more reliable * New validation instability on x86_64 discovered: - Analysis on-going but it is related to fstack-protector * Waiting for VPN access o Upstream GCC (4/10) * Reworked OOM issue on armeb-linux-gnu target fix * Patch committed on trunk * Backport on gcc-5 validated and about to be committed o Misc (2/10) * Various meetings * Team member support == Plan == o Continue on validation o Redo FSF branch merge after big-endian fix committed.

10 years, 8 months

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[ACTIVITY] 10th - 14th August

by Bernie Ogden

Benchmark infrastructure - TCWG-360 [6/10] * Fixed remaining known critical issues in multinode ** Testing stymied by LAVA oversubscription ** Attempted to implement some workarounds for oversubscription * Some discussion/investigation on generating filesystems for benchmarking * Started brain-dumping state of infrastructure into cards.linaro.org Bringing up Juno for noise control experiments [1/10] * Some struggles with firmware/bootloader configuration Misc [3/10] Featuring some ARM management duties = Plan = * Get benchmarking tests through, if LAVA permits * Fix any critical issues discovered * Finish brain-dump into cards.l.o * Bring up Juno for noise control experiments * Some more ARM management

10 years, 8 months

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[ACTIVITY] 10-14 August 2015

by Christophe Lyon

== Progress == * GCC (4/10) - AdvSIMD failures on aarch64_be: WIP patch makes the intrinsics tests pass, but shows regressions in the vectorizer tests * Releases/snapshots/validation (2/10) - validation monitoring, fixed a couple of minor bugs * Misc (4/10) - meetings, conf-calls, emails == Next == * GCC aarch64_be AdvSIMD * Validation

10 years, 8 months

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[Weekly] 10-14 AUGUST 2015

by Michael Collison

== This week == * TCWG-140 - Transform end of loop conditions to min_expr (4/10) - Wrote initial test case as requested by maintainers - Need to determine how to not run test case on targets with no MIN_EXPR/MAX_EXPR * TCWG-833 - Exploit Wide Add operations when appropriate (4/10) - Fixed internal error by using unspec for vector sign/zero-extend - Fixed multiple issues with test cases - Investigating why gcc.dg/vect/slp-reduc-3.c with lto is regressing for aarch32 and aarc64 - Investigating two additional regression failures on aarch64 * TCWG-834 - Use non-unit stride loads by preference when applicable (1/10) - Spoke with Richard Biener at GNU cauldron. - He indicated this was a problem with a interaction problem with vectorizer not attempting multiple strategies - He indicated that he planned to fix this for GCC 6 and not to attempt a fix - My plan is to write a test case that fails until the issue is addressed in GCC 6 * Misc (1/10) - Conference calls == Next week == - Resolve testsuite regressions for TCWG-833 - Create bugzilla reports for TCWG-833 and TCWG-834 - Write testcase for TCWG-834 and submit upstream - Investigate TCWG-832 as time permits

10 years, 8 months

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[activity] 10 - 14 August 2015

by Prathamesh Kulkarni

== This Week == * TCWG-777 (4/10) - Working on RTL pass, prototype patch works for the test-case. - updating the trunk to r226907 , it appears combine can fold arm_andsi3_insn/arm_cmpsi_insn into zeroextractsi_compare0_scratch at -O2 while not at -O1. .* TCWG-835 (2/10) - Testing patch with Spec 2006 - Found ICE unrelated to my patch * Misc (4/10) - Travel to home from GNU Tools Cauldron 2015, Prague. == Next Week == - Continue working on TCWG-777 - Continue testing TCWG-835 patch with SPEC 2006

10 years, 8 months

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[ACTIVITY]

by Renato Golin

== Progress == * Buildbots (CARD-1823 6/10) - Setting up new APMs - Running around for a decent UEFI, Kernel, Distro - Testing different builds, configurations - Managed to get one APM doing the test-suite *only*! sigh... - http://buildmaster.tcwglab.linaro.org/builders/clang-cmake-aarch64-lnt * Background (4/10) - Code review, meetings, discussions, etc. - Doing more reviews than usual due to buildbot work being erradic - Laptop is playing stupid again == Plan == * Moar bots * Moar code review * Maybe some vodka, to wash it all up

10 years, 8 months

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[ACTIVITY] 3 - 7 August 2015

by Omair Javaid

== Progress == LLDB development -- Testing and bug fixing lldb on hikey AArch64 [TCWG-886] [9/10] -- Debugging of watchpoint test failures and problems with multiple watchpoints. -- Clean-up of AArch64 watchpoint code and fixing watchpoint cache bugs. Miscellaneous [1/10] -- Meetings, emails, discussions etc. == Plan == LLDB development -- Submit and get review on bug fixes for lldb on hikey AArch64 code changes. -- Investigate further lldb test failues on hikey AArch64. Miscellaneous -- Friday 14th August, Independence day public holiday in Pakistan.

10 years, 8 months

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[ACTIVITY] Week 32

by Yvan Roux

== Progress == o Linaro GCC validation (4/10) * Look at the various validation issues we have * Dug into the logs, restarted jobs, asked to restart builders/testers. etc ... o Upstream GCC (5/10) * Investigate OOM issue on armeb-linux-gnu target * Found the issue and raised an upstream bugzilla: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67127 * Submitted a fix for it o Misc (1/10) * Various meetings == Plan == o Continue validation babysitting

10 years, 8 months

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[ACTIVITY] 3-7 August 2015

by Christophe Lyon

== Progress == * GCC (4/10) - investigating AdvSIMD Failures on aarch64_be. * Releases/snapshots (1/10) - re-spin 4.9-2015.06-1 snapshot - updated list of candidate backports * Misc (4/10) - meetings, conf-calls, emails * Internal (1/10) - ST internal support == Next == * GCC aarch64_be AdvSIMD

10 years, 8 months

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[ACTIVITY]

by Renato Golin

== Progress == * Performance (CARD-1832 3/10) - Profiling SPEC2k mesa, found some issues - Investigating r232513, unlikely the culprit, but interesting case * Releases (CARD-1431 1/10) - Spinning 3.7.0 RC2 * Buildbots (CARD-1823 4/10) - Setting up new APMs - Dealing with ASAN/TSAN bot breakage - Other buildbot breakages * Background (2/10) - Code review, meetings, discussions, etc. - Writing a bisect script for LLVM

10 years, 9 months

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[ACTIVITY] 27 - 31 July 2015

by Omair Javaid

== Progress == LLDB development -- Setup lldb test debug environment for testing failing tests on chromebook. [1/10] -- Debug various lldb hang scnarios on chromebook for armhf support [TCWG-855] [4/10] -- Figure out alternate fix for http://reviews.llvm.org/D11129. [TCWG-855] [3/10] Miscellaneous [2/10] -- Fix chromebook malfunction due to battery issues -- Meetings, emails, discussions etc. == Plan == LLDB development -- Debug lldb test cases on armhf to figure out problems in individual test-cases -- Create an updated lldb development project plan on JIRA. -- Update collaborate with steps on LLDB development process.

10 years, 9 months

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[ACTIVITY] 27th - 31th July

by Kugan

== Progress == * Widening pass (TCWG-547) - 8/10 - Handled review comments. - Improved CONVERT_EXPR handling. - Re based and retested - found some failures. - This was due to VRP reusing the range info computed in VRP1 after type promotion is applied. Invalidating the range info when type is promoted. - ARM with type promotion now improves (-O2) about ~2.8% with one tiny benchmark (where it used to regress). - Still some test cases failures (not execution failures but scanning certain patterns in the dump/asm). * Misc - 2/10 - Connect slides. - gcc-patches, gcc-bgs list - Meetings == Plan == - Widening pass

10 years, 9 months

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[Weekly] 27-31 JULY 2015

by Michael Collison

== This week == * TCWG-146 - Detect smin/umin idiom (1/10) - Incorporated final feedback and submitted code in SVN * TCWG-140 - Transform end of loop conditions to min_expr (1/10) - Misc. discussion upstream about concerning where optimization should be performed - Upstream maintainers asked me to create gimple ir test case * TCWG-833 - Exploit Wide Add operations when appropriate (1/10) - Unable to validate yet * TCWG-834 - Use non-unit stride loads by preference when applicable (5/10) - Further Aarch32 investigation to determine where decision to forgo vld3 decision is being made * Linaro connect preparation (1/10) * Misc (1/10) - Conference calls == Next week == - Validate patches for TCWG-833 and submit upstream - Further TCWG-834 investigation - GNU Cauldron conference and travel

10 years, 9 months

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[activity] 27 - 31 July

by Prathamesh Kulkarni

== This Week == * TCWG-835 (4/10) - Validated and submitted patch upstream for review. - Made changes to patches according to upstream reviews. - Microbenchmarks: http://pastebin.com/tDnHZuG5 * TCWG-777 (5/10) - Investigating different ICE's caused by my gimple remove-temps pass - Looked at expansion of GIMPLE_COND - Trying to write rtl version of remove-temps pass * Misc (1/10) - Conference calls == Next Week == - Continue with TCWG-777 - GNU Tools Cauldron 2015

10 years, 9 months

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[ACTIVITY]

by Renato Golin

== Progress == * Performance (CARD-1832 1/10) - Checking differences of PostRAListSched on OOO ARM cores - Not many changes, ignoring for now * Maintenance (CARD-1833 4/10) - Building libc++/abi/unwind in LLVM/Clang tree - Getting -Wa,-mfpu patches in, last important Clang driver ARM bug - Some patches to get libunwind and libc++ to compile in-tree on ARM - Fixed native sub-features detection (http://llvm.org/PR12794) * Background (5/10) - Code review, meetings, discussions, etc. - Long discussions about TargetTuple/TargetParser/Triple - Lots of patch reviews this week (I mean, *A LOT*) - Moving some machines around, checking for Chromebook batteries - Setting up cross-builder using multiarch / QEMU - Some future planning == Plan == * Look for some more performance issues in 3.7 * Try to hook up the cross-builder * Investigate libc++ check-all failures

10 years, 9 months

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[ACTIVITY] 27-31 July

by Charles Baylis

Holiday [2/10] Illness [2/10] TCWG-835 - Vector division [1/10] . patch review TCWG-867 - AArch64 post-idx addressing [4/10] . prototype patch works . vectorizer needs more work to exploit this Misc [1/10]

10 years, 9 months

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[ACTIVITY] 20-24 July

by Charles Baylis

Benchmarking [1/10] TCWG-775 NEON error messages [1/10] . AArch64 patch set approved . rebased/retested and applied TCWG-830/833/835 Vectorization project [5/10] . emails, calls, patch review TCWG-867 - AArch64 post-idx addressing [2/10] . debugging prototype patch Misc [1/10]

10 years, 9 months

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[ACTIVITY] 13-17 July

by Charles Baylis

Holiday [4/10] Benchmarking [3/10] TCWG-867 - AArch64 post-idx addressing [2/10] . prototype patch Misc [1/10]

10 years, 9 months

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[ACTIVITY] 27th - 31st July

by Bernie Ogden

Benchmark infrastructure - TCWG-360 [8/10] * Testing found many problems in multinode * Iterating to solutions Misc [2/10] =Plan= Holiday next week. Then back to fixing multinode, incorporating into jenkins, noise control experiments

10 years, 9 months

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[ACTIVITY] 27th - 31th July

by Yao Qi

# Progress # * TCWG-806, aarch64 remote debugging multi-arch support. [4/10] Patches are posted upstream. * TCWG-860, aarch64 fast tracepoint. [1/10] Patch review and some discussions. * TCWG-757, upstream patch review. [2/10]. ** Review NIOS II R2 patches. ** Fix PR record/18691. * Misc, meeting. [3/10] # Plan # * TCWG-857, Investigate multi-arch HW watchpoint support in GDB and linux kernel. Clean up aarch64 HW watchpoint code. * GNU Tools Cauldron. -- Yao

10 years, 9 months

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ABE - bug in copy_gcc_libs_to_sysroot() while building native toolchain for aarch64

by Virendra Kumar Pathak

Hi Linaro Toolchain Group, I am building a native toolchain for aarch64 with below configurations: --build=x86_64-unknown-linux-gnu --host=aarch64-linux-gnu --target=aarch64-linux-gnu. In copy_gcc_libs_to_sysroot() - which copy libgcc.a to sysroot, current implementation try to find the absolute path of libgcc.a as below : libgcc="`${local_builds}/destdir/${host}/bin/${target}-gcc -print-file-name=${libgcc}` But above line will not execute (i.e. gcc -print-file-name) on x86_64 as the toolchain is native toolchain for aarch64-linux-gnu. Thus a infinite loop will be created in copy command i.e. copying directory x in x. however, when I hard coded the libgcc.a path in my machine (as below), everything went fine. libgcc="/home/vpathak/arm/toolchain/build_abe_new/builds/destdir/aarch64-linux-gnu/lib/gcc/aarch64-linux-gnu/5.1.1/libgcc.a" I think this is a bug in ABE build infrastructure. Thanks. -- with regards, Virendra Kumar Pathak

10 years, 9 months

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RE: [ACTIVITY] 20th - 24th July

by duane＠duaneellis.com

* TCWG-806, aarch64 remote debugging multi-arch support. [4/10] Patches are done. Need to test them and polish them. Fix various multi-arch issues when --wrapper is used in GDBserver. Patches are pushed in to mainline. Could you describe this activity in more detail? Is the goal here to support mixed aarch32/aarch64 in the same GDB binary and detect the change at runtime? Thanks. -Duane

10 years, 9 months

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[ACTIVITY] 20th - 24th July

by Kugan

== Progress == * Factor conversion out of COND_EXPR - TCWG-849 (5/10) - Iterated through the review and more testing * Looked at widening pass and the test-case from Wilco (1/10) * Misc (2/10) - Connect slides. - gcc-patches, gcc-bugs list - Meetings * Sick (2/10) == Plan == - GCC Bugs - Widening pass - Linaro bug 1318

10 years, 9 months

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[Weekly] 20-24 JULY 2015

by Michael Collison

== This week == * TCWG-146 - Detect smin/umin idiom (1/10) - Made change recommended upstream and resubmitted * TCWG-140 - Transform end of loop conditions to min_expr (1/10) - Validated and submitted upstream * TCWG-833 - Exploit Wide Add operations when appropriate (5/10) - Added early clobber and forced operand 0 and operand 2 to match - Finished Aarch32 by using mode iterators - Developed patch for Aarch64 - Wide add instructions are now emitted for both Aarch32 and Aarch64 * TCWG-834 - Use non-unit stride loads by preference when applicable (2/10) - Further Aarch32 investigation * Misc (1/10) - Conference calls == Next week == - Validate patches for TCWG-833 and submit upstream - Further TCWG-834 investigation - Linaro connect presentation preparation

10 years, 9 months

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[activity] 20 - 24 July 2015

by Prathamesh Kulkarni

* TCWG-835 (6/10) - Looked at newton raphson method - Need to write new md pattern that matches sdiv_optab for modes == v2sf, v4sf - First attempt for patch: http://pastebin.com/NKy8WdWC * TCWG-830 (2/10) - Ran Charles's benchmarks on ARM and AArch64. - Investigating testsuite fallout for ARM patch. - Still blocked by permissions to do benchmarking * Misc (2/10) - Conference Calls - US visa collection == Next Week == - Continue with TCWG-830, TCWG-835, TCWG-777

10 years, 9 months

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binutils - question on decoding decision tree for aarch64

by Virendra Kumar Pathak

Hi Linaro Toolchain Group, I am trying to learn the 'decoding decision tree' for aarch64 in binutils by trying to add a new assembly instruction 'addvp'. For example: addvp x0, x0, 9 For this, I added a entry in struct aarch64_opcode aarch64_opcode_table[] (file opcodes/aarch64-tbl.h) as below: {"addvp", 0x01000000, 0x7f000000, addsub_imm, 0, CORE, OP3 (Rd_SP, Rn_SP, AIMM), QL_R2NIL, F_SF}, ARM manual say, bit 27 & bit 28 are unallocated. Thus for addvp, I am giving opcode 01000000 (with bit 27 & 28 as 0). With this, generating object file from assembly file is successful (test.s --> test.o); but while disassembling using objdump, it say undefined instruction. >From objdump log: 81002400 .inst 0x81002400 ; undefined (but instruction was generated correct i.e. 81002400 !!!). I know since addvp is a hack instruction, it won't execute on cpu. But still disassembly should succeed. 1. Please help me in knowing what I am doing wrong here ? What else I should do to add a new instruction in binutils ? 2. I also saw some printf in opcodes/aarch64-gen.c which I guess create decoding tree (initialize_decoder_tree()). How to print them ? I made debug =1 but still print is not coming. 3. There are some auto-generated files like aarch64-asm-2.c, aarch64-dis-2.c. How to re-generate them ? Thanks. -- with regards, Virendra Kumar Pathak

10 years, 9 months

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[ACTIVITY]

by Renato Golin

== Progress == * Maintenance (CARD-1833 5/10) - Building libc++/abi/unwind in LLVM/Clang tree - Fixing some build errors (D11486) - Addressing comments to submissions from last week - Committing approved ones - Re-working the others * Releases (CARD-1431 1/10) - Building 3.7.0-RC1 on ARM and AArch64, uploading * Benchmarks (CARD-716 2/10) - Running LNT, SPEC and EEMBC on ARM and AArch64 for 3.7.0 * Background (2/10) - Code review, meetings, discussions, etc. - Upgraded APM to Debian, kernel 3.16 - Perf still segfaults. :( == Plan == * Finish open reviews * Continue getting libc++ to build and pass the tests in tree * Look at some of the performance regressions in 3.7

10 years, 9 months

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[ACTIVITY] 20th - 24th July

by Yao Qi

# Progress # * TCWG-806, aarch64 remote debugging multi-arch support. [4/10] Patches are done. Need to test them and polish them. Fix various multi-arch issues when --wrapper is used in GDBserver. Patches are pushed in to mainline. * TCWG-876 [1/10] Re-run GDB testsuite with incoming Linaro toolchain release. Everything looks OK. * TCWG-860, aarch64 fast tracepoint. [1/10] Polish the patches, and ready for submission. * TCWG-757, upstream patch review. [2/10]. * Misc, meeting. [2/10] # Plan # * TCWG-806, test patches on different targets, polish patches and post them for review. # Absence # 06th Aug - 10th Aug, GNU Tools Cauldron. 11th Aug - 14th Aug, Holiday. -- Yao

10 years, 9 months

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[ACTIVITY] 20th - 24th July

by Bernie Ogden

Benchmark infrastructure - TCWG-360 [6/10] * Some user support/bugfixing/bugraising * Multinode job more or less working (not fully tested) * Additional restructuring got rid of some more complexity ** Though if my simplifying assumption doesn't hold, I'll have to put it back Benchmarking 101 presentation [2/10] * Ran through slides with Ryan & Maxim * Removed many slides * Collected up and categorized the removed slides ** Probably will go into future presentation(s) Misc [2/10] =Plan= * Tweak multinode a little more * Integrate multinode into Jenkins ** To the extent that I'm comfortable with the security * Read a bit about some benchmarks that aren't SPEC * Start noise control experiments (may inform presentation) =Week After Next= Holiday

10 years, 9 months

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[ACTIVITY] Week 29

by Yvan Roux

* One day off - Bastille day (2/10) == Progress == o Upstream GCC (3/10) * Finalized and committed fix in trunk for Linaro bug #416 o Linaro GCC release (4/10) * Reviewed and did more patches for tcwg-release script * Still investigate validation issues. * Prepared FSF branch merge into Linaro GCC 5 branch o Misc (1/10) * Various meetings == Plan == - Summer Holidays (2 weeks)

10 years, 9 months

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[ACTIVITY] 13-17 July 2015

by Kugan

== Progress == * Add REG_EQUAL note for arm_emit_movpair (1/10) - Patch2 ok to commit. - Ran complete validation. - Found an issue and posted a patch to fix * Factor conversion out of COND_EXPR - TCWG-849 (6/10) - Found a performance regression in tree-ssa-reasoc - Looked at the tree-ssa-reasoc code to see possible fixes - Posted an RFC patch * PR66865 - Wine segfaults from gcc in trunk (r225757) - Reproduced it but turned out not from my commit - Fixed by other PR * Misc (2/10) - Looked at interaction between gcc optimization passes - gcc-patches, gcc-bugs list - Meetings == Plan == - GCC Bugs - TACT driven optimization exploration for gcc - Linaro bug 1318

10 years, 9 months

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[ACTIVITY] 13th - 17th June

by Bernie Ogden

Benchmark infrastructure - TCWG-360 [5/10] * Worked through my Jenkins issues with Fathi, raised some tickets at him * Converting LAVA end into multinode job ** Having some trouble with multinode API Benchmarking 101 presentation [3/10] * 1/2 day of discussions/reading, full day of redrafting * Looked for Michael Hope's similar 2012 presentation ** Found slides, not video =Plan= * Complete multinode job * Integrate into Jenkins to the extent that I'm comfortable * Complete 'shareable' draft of benchmarking-101 ** And see if I have enough left over for -102, maybe -103

10 years, 9 months

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[Weekly] 13-17 JULY 2015

by Michael Collison

== This week == * TCWG-140 - Transform end of loop conditions to min_expr (1/10) - Blocked waiting on validation * TCWG-833 - Exploit Wide Add operations when appropriate (7/10) - Developed patch to handle signed and unsigned cases for Aarc32 - Investigation and debugging into support for Aarch64 * TCWG-834 - Use non-unit stride loads by preference when applicable (1/10) - Initial Aarch32 investigation * Misc (1/10) - Conference calls == Next week == - Validate Aarch32 patch for TCWG-833 - Develop Aarch64 patch for TCWG-833 - Validate TCWG-140 - Make recommended fixes to TCWG-146 and resubmit upstream

10 years, 9 months

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[activity] 13 - 17 July 2015

by Prathamesh Kulkarni

* TCWG-777 (3/10) - O2 workaround: -fno-tree-pre -fno-tree-fre -fno-tree-dominator-opts -fno-gcse -fno-peephole2 - Observing rtl dumps for gcse, combine, peephole2 with different options and optimization levels. - Continued investigating ICE during gcc build with my pass applied. - Sent mail to tcwg, for further suggestions * TCWG-830 (2/10) - Verified the behavior for aarch64, and extended patch for aarc64 along same lines. - Running Charles's microbenchmarks on r1-a7 - Benchmarking setup with Bernie. Blocked by permissions, sent a mail to lava-lab, for granting requisite permissions * TCWG-835 (2/10) - observing vector and asm dumps * Misc (3/10) - Travel to Mumbai for US Visa Interview - Conference Calls == Next Week == - Continue with TCWG-777, TCWG-835, TCWG-830

10 years, 9 months

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Re: abe: cross native toolchain compilation for aarch64-linux-gnu

by strongq

I'm trying to build the toolchain as win32 executable on Ubuntu with ABE. I'm pretty new with ABE. I followed the FAQ https://wiki.linaro.org/WorkingGroups/ToolChain/FAQ and Rob's post. Also checked the MakeRelease.job and slave.sh. I have all packages listed in the slave.sh installed. So I assume I have all dependencies ready for the build. Here is what I have done: Create _build subfolder beside abe CD to _build and run: ../abe/configure --with-fileserver=148.251.136.42 --with-remote-snapshots=/snapshots-ref First build this: ../abe/abe.sh --target aarch64-none-elf -build all It installed the toolchain to _build/builds/destdir/x86_64-unknown-gnu-linux. I added the bin under it to my PATH Then do 2nd round build: ../abe/abe.sh -host i686-w64-mingw32 --target aarch64-none-elf -build all However, I'm getting config error while it building libiberty: configure:5946: checking for library containing strerror Configure:5978: error: Link tests are not allowed after GCC_NO_EXECUTABLES. My understanding is that the linker cannot find glibc or eglibc. What have I missed? Any where I can find detail instruction like step by step to build Linaro toolchain for running on Windows host? Sincerely, Qyq

10 years, 9 months

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[ACTIVITY]

by Renato Golin

== Progress == * Maintenance (CARD-1833 4/10) - Clang driver: - Passing -Wa,-mfpu and friends to assembler (D11147, D11148) - Passing -I to assembler (D11185) - Don't include libgcc/asm if using libunwind/libc++abi (D11153) - Asm warnings: - Trying again to look for a way to disable asm warnings from clang (D11216) * Benchmarks (CARD-716 3/10) - Benchmarking shrink-wrapping in AArch64 - Setting up LNT Benchmarks on A32/A64 - Scripts to collate / compare LNT results on the fly - Benchmarking LNT on 3.5.2 and 3.6.2 on ARM and AArch64 - Multisampling, perf, and all goodness - Getting ready to compare with 3.7.0 to come * Releases (CARD-1431 1/10) - Spinning release 3.7.0 - Many changes, CMake builds, etc. - Fixing the test-release.sh script (D11326) * Background (2/10) - Code review, meetings, discussions, etc. - Upgrading APM to Debian 3.16 == Plan == * Upstreaming pending reviews * Continue release 3.7.0, benchmark it * Start looking at the effects of the stride vectorizer on ARM/AArch64

10 years, 9 months

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[Activity] July 13 - July 17

by Yao Qi

# Progress # * TCWG-806, aarch64 remote debugging multi-arch support. [6/10] Some code refactor and fix various multi-arch issues when --wrapper is used in GDBserver. Patches are being tested. * TCWG-757, Patches review. [2/10] * Misc, meeting, [2/10] # Plan # * TCWG-806, aarch64 remote debugging multi-arch support. # Absence # * 06th Aug - 10th Aug, GNU Tools Cauldron. * 11th Aug - 14th Aug, Holiday. -- Yao

10 years, 9 months

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[ACTIVITY] 13-17 July 2015

by Christophe Lyon

1 day off (2/10) == Progress == * backports/release/infra (1/10) - reviews * GCC (3/10) - posted patch to fix vget_lane on armeb - investigating AdvSIMD failures on aarch64_be. Having a way to debug target code would help (qemu does not seem to support aarch64_be yet, and I use the foundation model in bare metal mode) * Misc (4/10) - meetings, conf-calls, emails == Next == Holidays until Aug 3rd.

10 years, 9 months

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[ACTIVITY] 6th - 10th June

by Bernie Ogden

Benchmark infrastructure - TCWG-360 [5/10] * More thinking/prototyping sufficiently-secure Jenkins benchmarking * Converting LAVA end into multinode job Benchmarking presentation [2/10] * A couple of helpful discussions * Read a couple of helpful docs Misc [3/10] =Plan= * Complete multinode job * Settle on a plan for Jenkins * Redraft presentation

10 years, 9 months

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[activity] 6 - 10 july 2015

by Prathamesh Kulkarni

== This Week == * TCWG-777 (4/10) - Resolved ICE caused by pass during gcc build but hit another ICE: http://pastebin.com/RUAY6scB - Current pass state: http://pastebin.com/AGXnSkrZ - For test-case: void f(int flags) { void foo(void); if (flags & 1) foo(); } - temporaries don't exist for -O1 - for -O2 temps introduced by peephole2 due to define_peephole2 pattern in thumb2.md:1540 http://pastebin.com/3rEF8Te4 So this intentionally transforms rtx from zeroextractsi_compare0_scratch to rtx from shiftsi3_compare0_scratch. Why is it beneficial to do this transform ? - Looking into combine pass - For above test-case works with -marm for -O2. * TCWG-830 (3/10) - trying to understand vect dump - untested patch: http://pastebin.com/K4UX5iYz * Misc (2/10) - Started looking at TCWG-835, loop vectorized on x86 but not arm - Committed fix to segfault on -dx - Conference calls == Next Week == - Continue with TCWG-777, TCWG-830, TCWG-835 - Travel to Mumbai on 14th July (Tuesday) for US Visa Interview with US Consulate.

10 years, 9 months

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[ACTIVITY] Week 28

by Yvan Roux

Hospital and physio (2/10) == Progress == o Upstream GCC (2/10) * More work on ongoing patches o Linaro GCC release (3/10) * Reviewed patches for tcwg-release script * Looked at validation issues and redo backports for 5.1 o Misc (3/10) * Various meetings * Upstream libunwind support == Plan == - Continue ongoing tasks

10 years, 9 months

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[ACTIVITY] 06 - 10 July 2015

by Omair Javaid

== Progress == LLDB development -- Debugging problems with process launch and debugserver crash on remote connection. [TCWG-855] [6/10] -- Caught the notorious issue mentioned above fix can be found here http://reviews.llvm.org/D11129. -- Figured arm lldb and lldbserver host builds on chromebook will put steps on collaborate LLDB page soon. [1/10] Miscellaneous [3/10] -- Travel to Islamabad for Czech Republic visa -- Meetings, emails, discussions etc. == Plan == LLDB development -- Follow up review process for process launch bug fix. -- Run testsuite for armhf and figure out issues to fix. -- Submit patches to fix build on older version of gcc. Eid Holidays 17th to 21st July 2015

10 years, 9 months

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[Weekly] 06-10 JULY 2015

by Michael Collison

== This week == * TCWG-146 - Detect smin/umin idion (0/10) - Waiting for upstream approval/review * TCWG-140 - Transform end of loop conditions to min_expr (1/10) - Blocked waiting on validation * TCWG-833 - Exploit Wide Add operations when appropriate (8/10) - Mere detailed investigation - Working theory is to develop wide add rtl patterns that incorporate vec_unpack to widen 16-bit to 32-bit * Misc (1/10) - Conference calls - Conference call with Charles and Prathamesh to discuss autovectorization progress == Next week == - Validate patch for TCWG-140 - Develop patch for TCWG-833 - Validate TCWG-833 if successful patch is developed - Investigate Aarch64 implementation

10 years, 9 months

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[ACTIVITY] 6-10 July 2015

by Kugan

== Progress == * Add REG_EQUAL note for arm_emit_movpair (1/10) - committed patch1 after testing again * Factor conversion out of COND_EXPR - TCWG-849 (5/10) - Gone through couple of iterations and committed the patch - There are still some improvements need as follow up patches * TACT -TCWG-851 (2/10) - Started looking into spec2k * Misc (2/10) - Looked at interaction between gcc optimization passes - gcc-patches, gcc-bugs list - Meetings == Plan == - GCC Bugs - TACT driven optimization exploration for gcc - Linaro bug 1318

10 years, 9 months

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[ACTIVITY]

by Renato Golin

== Progress == * Releases (CARD-1431 1/10) - Released 3.6.2-final * Maintenance (CARD-1833 5/10) - Reducing runtime of some benchmarks in LLVM's test-suite by getting rid of millions of useless fprintf calls. - Working on https://llvm.org/PR20700 some more * Background (4/10) - Code review, meetings, discussions, etc. - Long TargetTuple review (D10969) / discussions - Replacing broken buildbot USB disks (need to buy more) - Bisecting self-hosting bot breakage - Testing patches for ARM - Jira farming == Plan == * continue PR20700 * continue review/discussion of TargetTuple * look again at PR20757 * maybe look at PR21000

10 years, 9 months

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[ACTIVITY] 6-10 July 2015

by Christophe Lyon

* Off Monday (2/10) == Progress == * published linaro-4.8 and 4.9 2015.06 releases * linaro-5.1-2015.07 (1/10) - backport reviews - updated my helper script for reviews for cope with the git-only branches * upstream (1/10) - started looking at vget_lane Neon intrinsic failure on armeb * infra/release/backports (2/10) - reviews * Misc (4/10) - meetings, conf-calls, emails == Next == * Off Tuesday * backports, release, validation: update doc * backports, reviews * upstream work == Later == * Off July 18th-Aug 3rd

10 years, 10 months

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[Activity] July 6 - July 10

by Yao Qi

# Progress # * TCWG-805, aarch64 native debugging multi-arch support. [4/10] Patches are committed upstream except patches handling hardware single step on aarch32. TCWG-806, aarch64 remote debugging multi-arch support. Some code refactor. * TCWG-876, FSF GDB 7.10 release. [3/10] Update ABE config files to include GDB 7.10 branch in the build. Patch is pushed in. Look at some regressions (on all platforms) to fix. * TCWG-757, Patches review. [1/10] * TCWG-858, Patches are pushed in. [1/10] * Misc, meeting, [1/10] # Plan # * TCWG-806, aarch64 remote debugging multi-arch support. * TCWG-757, Fix regressions in FSF GDB 7.10 branch. -- Yao

10 years, 10 months

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