- linaro-toolchain - lists.linaro.org

[Weekly] 07-11 SEPTEMBER 2015

by Michael Collison

== This week == * TCWG-316 -Exploit vector multiply by scalar instructions when multiple scalars are used as coefficients in a loop (5/10) - Wrote patterns to allow combine pass to mergenon-standard multiply by lane patterns. * Bugzilla 57195 (mode iterator bug) blocked compiling new pattern (1/10) - Updated patch based on upstream comments and re-sent upstream * TCWG-77 - Transform end of loop conditions to min_expr (1/10) - Writing dejagnu test case. - Writing function to check for min expr support on target * Misc (1/10) - Conference calls * Holiday (2/10) == Next week == - Complete TCWG-77 and send upstream - Continued investigation into TCWG-316

9 years, 8 months

1
0
0 0

[activity] 07 - 11 Sep 2015

by Prathamesh Kulkarni

== This week == * TCWG-80 (1/10) - PRE and dead-store elimination ipa pass (WIP upstream) already handles optimization * TCWG-120 (2/10) - Investigating 3 possible approaches: a) fold arm_andsi3_insn/arm_cmpsi_insn to zeroextractsi_compare0_scratch/andsi3_compare0_scratch b) Undo cse in test conditions, and modify arm_rtx_costs to fold arm_andsi3_insn/arm_cmpsi_insn to zeroextractsi_compare0_scratch/andsi3_compare0_scratch c) Expand directly to zeroextractsi_compare0_scratch/andsi3_compare0_scratch - Not sure whether the generated assembly is better (in terms of speed) than with trunk. asm diff at -O1: http://pastebin.com/yXBHHkhM * TCWG-72 (2/10) - Rebased Kugan's patch * TCWG-299 (3/10) - Simple workaround for PR65837 - configure gcc with --with-fpu=neon - Firefox trunk doesn't build with gcc for arm, using apt-get source firefox - LTO build fails with out-of-memory on my laptop in qemu-arm chroot * TCWG-319 (1/10) - Benchmarking setup with Bernie on Juno for running SPEC. - SPEC Runs without error on Juno-{a53,a57} and APM * Misc (1/10) - Meetings == Next Week == - Continue with TCWG-120, TCWG-72, TCWG-319

9 years, 8 months

1
0
0 0

Missing expat support in GDB 7.8

by Andreas Schmidl

Hi! The pre-built version of the stable version of Linaro Toolchain (Linaro GDB 2015.02-3) for Windows is shipped with GDB 7.8-2014.09-1-git. GDB was built with the following options: (gdb) show configuration This GDB was configured as follows: configure --host=i686-w64-mingw32 --target=arm-linux-gnueabihf --with-auto-load-dir=$debugdir:$datadir/auto-load --with-auto-load-safe-path=$debugdir:$datadir/auto-load --without-expat --with-gdb-datadir=/home/buildslave/workspace/BinaryRelease/label/hetzner/target/arm-linux-gnueabihf/_build/builds/destdir/i686-w64-mingw32/share/gdb (relocatable) --with-jit-reader-dir=/home/buildslave/workspace/BinaryRelease/label/hetzner/target/arm-linux-gnueabihf/_build/builds/destdir/i686-w64-mingw32/lib/gdb (relocatable) --without-libunwind-ia64 --without-lzma --without-guile --with-separate-debug-dir=/home/buildslave/workspace/BinaryRelease/label/hetzner/target/arm-linux-gnueabihf/_build/builds/destdir/i686-w64-mingw32/lib/debug (relocatable) --without-zlib --without-babeltrace As you can see in the output GDB was built without expat support. This is a major problem for widely used micro controllers like ARM Cortex A8 (e.g. used in Beaglebone Black), because the technical description of this microcontroller is loaded out of xml files (arm-with-neon.xml part of GDB). It's also possible to do that manually with "set tdesc filename <xml-file>, before connecting to the target. Without having the expat option enabled the g package, which is sent from gdbserver during establishing a connection to gdb, can't be parsed correctly. The result is in the first step a warning because of the missing xml support and later on a error regarding the unexpected content of the g package: warning: Can not parse XML target description; XML support was disabled at compile time Remote 'g' packet reply is too long: 00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000f0fcffbe00000000407afdb6300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 Old GDB versions of Linaro Toolchain like 7.6.1-2013.10 doesn't have that problem because they were compiled with enabled expat support. In my opinion there can be two root causes regarding that missing expat support: a) Expat support was explicitly disabled with --without-expat option during the built of GDB. b) On the build machine there wasn't a expat library available when gdb was built. Best regards, Andreas Schmidl

9 years, 8 months

1
0
0 0

[ACTIVITY]

by Renato Golin

== Progress == * Libraries (1/10) - Working on getting the libc++ tests green * Maintenance (6/10) - Working with Vinicius on the gnueabi memcpy issue - More TargetTuple/TargetParser discussions - More sanitizers discussions, patch reviews * Background (3/10) - Code review, meetings, discussions, general support, etc. - Connect stuff == Plan == * Look a bit more on the library issues, try to upstream the bot changes * Check instability in SciMark2 * Change HD from a D01 * Continue discussion about the sanitizer's multiple VMA problem * Prepare for Connect, travel arrangements, etc.

9 years, 8 months

1
0
0 0

[ACTIVITY] 07 Sep -- 11 Sep

by Yao Qi

# Progress # * TCWG-857, [7/10] One patch is upstreamed. The rest of them are in the queue. Upgrade juno board linux kernel to 4.2.0-rc4+ to test some multi-arch kernel patches. It isn't easy to run that new kernel on juno board, takes much time on this. * Misc [3/10]. Meetings, online trainings, etc. # Plan # * Continue to upstream multi-arch patches. * Some upstream patch reviews on tracepoint. -- Yao

9 years, 8 months

1
0
0 0

help: cortex-a7 u-boot hang at pcie with gcc-linaro-4.9

by Liu Ting

Hello guys, I am newbie here and need your kindly help:) When trying to use gcc-linaro-4.9 to build u-boot for ls1021atwr (ARM Cortex-A7 MPCore compliant with ARMv7-A architecture), we face issue. U-boot hangs at PCI-E. After tracing the code, the issue is located at the line "*val = readl(addr);". u-boot/drivers/pci/pcie_layerscape.c: ls_pcie_read_config(): if (PCI_BUS(d) == hose->first_busno) { ... } else { ... if (PCI_BUS(d) == hose->first_busno + 1) { #PCI_BUS(d) 1, hose->first_busno 0 ls_pcie_cfg0_set_busdev(pcie, busdev); addr = pcie->va_cfg0 + (where & ~0x3); #pcie->va_cfg0 0x24000000, where 0xc } else { .... } } *val = readl(addr); The gcc source we used is gcc-linaro-4.9-2015.02.tar.xz<https://releases.linaro.org/15.02/components/toolchain/gcc-linaro/4.9/gcc-l…> (link<https://releases.linaro.org/15.02/components/toolchain/gcc-linaro/4.9/>) which is based on FSF GCC 4.9.3-pre+svn220525. Meanwhile, gcc-linaro-4.9-2015.01.tar.xz<https://releases.linaro.org/15.02/components/toolchain/gcc-linaro/4.9/gcc-l…> does not have this issue. After Bisecting, we tracked down a gcc commit: https://git.linaro.org/toolchain/gcc.git/commitdiff/e4f9e85e8152379aef37377… 2015-01-23 Jakub Jelinek <jakub(a)redhat.com> PR rtl-optimization/63637 PR rtl-optimization/60663 * cse.c (merge_equiv_classes): Set new_elt->cost to MAX_COST if elt->cost is MAX_COST for ASM_OPERANDS. (find_sets_in_insn): Fix up comment typo. (cse_insn): Don't set src_volatile for all non-volatile ASM_OPERANDS in PARALLELs, but just those with multiple outputs or with "memory" clobber. Set elt->cost to MAX_COST for ASM_OPERANDS in PARALLEL. Set src_elt->cost to MAX_COST if new_src is ASM_OPERANDS and elt->cost is MAX_COST. * gcc.dg/pr63637-1.c: New test. * gcc.dg/pr63637-2.c: New test. * gcc.dg/pr63637-3.c: New test. * gcc.dg/pr63637-4.c: New test. * gcc.dg/pr63637-5.c: New test. * gcc.dg/pr63637-6.c: New test. * gcc.target/i386/pr63637-1.c: New test. * gcc.target/i386/pr63637-2.c: New test. * gcc.target/i386/pr63637-3.c: New test. * gcc.target/i386/pr63637-4.c: New test. * gcc.target/i386/pr63637-5.c: New test. * gcc.target/i386/pr63637-6.c: New test. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_9-branch@220323 138bc75d<https://git.linaro.org/toolchain/gcc.git/object/138bc75d>-0d04-0410-961f-82ee72b054a4<https://git.linaro.org/toolchain/gcc.git/object/82ee72b054a4> Before this commit, u-boot can boot up. So any hint/suggestion? if more details needed, please feel free to tell us. Thank you in advance. -Ting

9 years, 8 months

3
3
0 0

[ACTIVITY] 31 August - 4 September 2015

by Omair Javaid

== Progress == LLDB development -- Testing and bug fixing lldb on hikey AArch64 [TCWG-231] [4/10] -- Looking into multi-threaded watchpoint test failures on AArch64 highkey board. -- Fixed watchpoint installation lag and unexpected behaviour. Submitted http://reviews.llvm.org/D12522 -- Start work to add support for un-alinged watchpoints on AArch64 [TCWG-367] [3/10] Miscellaneous [3/10] -- Meetings, emails, discussions etc. -- Laptop LCD screen malfunctioned, found a temporary replacement. == Plan == LLDB development -- Progress towards un-allinged watchpoint support on AArch64 LLDB -- Fix broken parts of LLDB testsuite on AArch64.

9 years, 9 months

1
0
0 0

[ACTIVITY] Week 36

by Yvan Roux

== Progress == o Linaro GCC validation (8/10) * Reviewed, validated and committed more backports * New stability issues after executor number increased * Started to script branch merge * Developed a new tool to avoid wasting time in gerrit/jenkins/logs navigation o Upstream GCC (1/10) * Looked at and updated some bugzillas o Misc (1/10) * Various meetings == Plan == o Continue backports/validation/branch merge

9 years, 9 months

1
0
0 0

[ACTIVITY] 31th Aug - 04th Sep

by Kugan

== Progress == * Widening pass (TCWG-547) – 6/10 - Looked at “Error: unaligned opcodes detected in executable segment” * Spent lot of time trying to understand the root cause. * Got some suggestions from Jim and looking into it. - Posted some of the important patches for review. * https://gcc.gnu.org/ml/gcc-patches/2015-09/msg00399.html * https://bugs.linaro.org/show_bug.cgi?id=1318 (2/10) - Tried reproducing with the source provided without success. - Could build and reproduce with emacs-24.4 release. - Trunk GCC version 6.0.0 20150902 works. - GCC version 4.9.3 20150209 (Linaro GCC 4.9-2015.02) fails. * Misc - 2/10 - gcc-patches, gcc-bugs list == Plan == * Continue with widening pass * Fix Bug1318

9 years, 9 months

1
0
0 0

[ACTIVITY] 31st August - 4th September

by Bernie Ogden

Holiday [4/10] Multinode wrapper - TCWG-350 [2/10] * Merged to benchmarking branch, roughly documented * Tested & added job definition templates Setting up VPN [2/10] * Much struggling with mutt, pgp, VM vs real system, Mac vs Linux * Still not working, but wrote up what I've learned on the Collaborate page Misc [2/10] * ARM admin, meetings, mail, etc etc =Plan= Last pass through benchmarking presentation Finish multinode/updating benchmarking docs Back to Juno noise control experiments Back to Jenkins - get it to drive multinode

9 years, 9 months

1
0
0 0

[ACTIVITY] 24th - 28th August

by Bernie Ogden

(Reporting with new Jira numbers) Holiday [6/10] Investigate effectiveness of noise control - TCWG-358 [2/10] * Learned to build OE filesystems * Got Juno running with more or less provenance-tracked firmware, kernel, filesystem Misc - [2/10] * Pushed through some updates to benchmark sources * Struggled with Collaborate permissions to share source/results handling rules * Remaining multinode tests passed

9 years, 9 months

1
0
0 0

[Weekly] 31 AUGUST - 04 SEPTEMBER 2015

by Michael Collison

== This week == * TCWG-832 -Exploit vector multiply by scalar instructions when multiple scalars are used as coefficients in a loop (4/10) - Continued investigation. * TCWG-833 - Exploit Wide Add operations when appropriate (4/10) - Reworked Aarch64 patch to avoid redundant moves - Sent patch upstream for review - Debugging Aarch64 tree-dump regression suite failures - Bugzilla 57195 (mode iterator bug) blocked compiling new pattern (1/10) - Separated patch from Bugzilla 67321 patch and sent upstream - Pinged upstream for comments * Misc (1/10) - Conference calls == Next week == - USA Labor day holiday, September 7th - Additional investigation into TCWG-832

9 years, 9 months

1
0
0 0

[ACTIVITY] 31st August - 04 September 2015

by Prathamesh Kulkarni

== This Week == * TCWG-120 (8/10) - Resolved df issue in my patch, sent to tcwg list for review, - VRP makes the issue latent at -O2. Reproducible with -fno-tree-vrp - Taking another approach to run a "specialized" combine pass before combine pass that folds arm_andsi3_insn/arm_cmpsi_insn to zeroextracsi_compare0_scratch or andsi3_compare0_scratch without relying on combine. Patch: http://pastebin.com/gLVg7pbN Asm diff at -O1: http://pastebin.com/yXBHHkhM Asm diff at -O2 -fno-tree-vrp: http://pastebin.com/EKj6hXkt * Misc (2/10) - Meetings - Had a look at vect test-cases failing due to LTO == Issues == - No access to Juno - Can't login to IRC via ZNC (can connect directly). == Next Week == - Continue with TCWG-120 - Start looking at TCWG-80

9 years, 9 months

1
0
0 0

[ACTIVITY]

by Renato Golin

== Progress == * Holidays (4/10) * Buildbots (2/10) - Several breakages, Clang alignment issue sill breaking self-hosted bots... * Maintenance (2/10) - Backtracks on the TargetParser, code heavily modified, discussions ensued. - Helping Vinicius with __aeabi_memcpy in the kernel * Releases (0/10) - Release 3.7.0 final validated / uploaded - Waiting for final switch * Background (2/10) - Code review, meetings, discussions, etc. - Backlog of emails, reviews == Plan == Look at libc++ / RT / unwind again see if I can reduce the errors in both AArch64 and ARM to zero. == Issues == The power cuts and the effect it had on my buildbots made me spend 3 days of my holidays to fix. Other buildbot breakages made me spend another 2, and I couldn't wait until I was back, or it would have wasted an entire week (as it has happened before). In a nutshell, I can't have holidays. Yay!

9 years, 9 months

1
0
0 0

[ACTIVITY] 31th Aug - 04th Sep

by Yao Qi

# Progress # * Holiday on Monday [2/10] * TCWG-857, [4/10]. All the multi-arch work are done (I hope) but patches can't be sent out until kernel patches are pushed in upstream. ** Collect some arguments from kernel folks to defend my change "32-bit CPSR to 64-bit PSTATE". Patch is posted out. ** Finish the patch to convert siginfo_t between 32-bit debuggee and 64-bit debugger. Done. Will post it next week. ** Get right TLS base in multi-arch debugging. Patch is done. * Happen to see we can improve GDB performance in some case by avoid sending some packets. Patch is done, but need to collect some performance data. [2/10] * Misc [1/10] ** Close some tickets, TCWG-567, TCWG-876, as they are done. * TCWG-757 [1/10], many patches review. # Plan # * Continue to upstream multi-arch patches. * Upgrade my juno board kernel to git master to test kernel patches for multi-arch debugging work properly. * Collect some GDB performance data for my patch. -- Yao

9 years, 9 months

1
0
0 0

Odd Linaro GCC 4.8 2015.06 behavior with precompiled headers

by Dragan Stancevic

Hi- It seems that there is some discrepancy between Linaro GCC 4.8 2015.06 and Linaro GCC 4.8 2014.11 with regards to precompiled headers. It appears that 2015.06 doesn't even attempt to open the precompiled headers according to strace. I have been looking on gcc mailing list but have not been able to find any fixes related to precompiled headers. Does anyone have any pointers as to what should I be looking at to get to the bottom of this issue? This simple program compiles without any problems on 2014.11, but fails on 2015.06 because 2015.06 doesn't even attempt to read tst.h.gch created by "make header" dragans@tst:~$ cat Makefile PROJ=tst CC=arm-linux-gcc LD=arm-linux-ld all: header $(PROJ) header: $(PROJ)._ cp $(PROJ)._ $(PROJ).h $(CC) -x c-header -c $(PROJ).h $(PROJ): $(RM) $(PROJ).h $(CC) $(PROJ).c -o $(PROJ) clean: $(RM) $(PROJ).h.gch $(PROJ).h $(PROJ) dragans@tst:~$ cat tst._ #include <stdio.h> dragans@tst:~$ cat tst.c #include "tst.h" int main(int argc, char**argv) { char *s = "Test"; printf("%s\n", s); return 0; }

9 years, 9 months

1
0
0 0

[ACTIVITY] 24 - 28 August 2015

by Omair Javaid

== Progress == LLDB development -- Testing and bug fixing lldb on hikey AArch64 [TCWG-886] [7/10] -- Improve error handling of AArch64 watchpoint code. Submitted, got reviewed and committed http://reviews.llvm.org/D12328 -- Looked into ways to improve watchpoint installation lag. -- Looked into issues pertaining to un-alligned watchpoints installation. -- Committed upstream arm hardware breakpoint and watchpoint support [TCWG-770] [TCWG-794] [1/10] -- Ran lldb testsuite in various combinations to figure out Arm and AArch64 status [1/10] -- Testing on chromebook with precise chroot works. Miscellaneous [1/10] -- Meetings, emails, discussions etc. == Plan == LLDB development -- Try to find ways to debug lldb-server platform forked gdbserver instance. -- Test, debug and fix testsuite failures on Arm and AArch64.

9 years, 9 months

1
0
0 0

[ACTIVITY] 17 - 21 August 2015

by Omair Javaid

== Progress == LLDB development -- Testing and bug fixing lldb on hikey AArch64 [TCWG-886] [2/10] -- Looked into watchpoint tests which are still failing after committing watchpoint support and bug fixes. -- Modifications to arm hardware breakpoint and watchpoint support [TCWG-770] [TCWG-794] [7/10] -- Resubmitted the pending patch http://reviews.llvm.org/D9703 -- Testing on chromebook with precise chroot works. Miscellaneous [1/10] -- Meetings, emails, discussions etc. -- Looking into slow data transfer issues on chromebook and highkey board == Plan == LLDB development -- Get patches reviewed and committ them. -- Continue looking into tests which are still failing on Arm and AArch64 -- Run test comparison between linux x86, android arm and linux arm

9 years, 9 months

1
0
0 0

[ACTIVITY] Week 3

by Yvan Roux

o 3 days off (6/10) == Progress == o Linaro GCC validation (3/10) * Reviewed, validated and committed on-going backports * backported more revisions o Misc (1/10) * Various meetings == Plan == o Continue backports/validation

9 years, 9 months

1
0
0 0

[ACTIVITY] 24th - 28th August

by Kugan

== Progress == * Annual Leave (2/10) * Widening pass (TCWG-547) - 6/10 - Fixed all execution test failure. - bootstrap failure due to “Drop copy-rename” is still not resolved. Found a workaround. - Sorted debug_stmt handling * TACT 1/10 - Started looking to cross execution set-up * Misc - 1/10 - gcc-patches, gcc-bugs list == Plan == * Continue with widening pass

9 years, 9 months

1
0
0 0

[activity] 24-49 August

by Prathamesh Kulkarni

== This Week == * TCWG-777 (3/10) - Fixed ICE with the patch - toolchain builds with the patch. - Sent patch to tcwg list for review - Investigating why combine fails to combine arm_andsi3_insn/arm_cmpsi_insn into zeroextractsi_compare0_scratch when the pass uses ud-chains to find def but works when def is found using ad-hoc way. * TCWG-871 (4/10) - Getting familiar with firefox build system - LTO build lto/non-lto on x86 and arm (doc) - Figuring out how to resolve "plugin needed to handle lto object" error. tried the following: binutils configured with: --enable-plugin, --enable-lto gcc configured with: --enable-lto --with-ld-plugin=<just built ld> Doesn't appear to work. * TCWG-835 (1/10) - Build failure with spec (PR67399) * Misc (2/10) - Meetings - Looked at rtl dataflow (df.h and df*.c) and ree.c == Next Week == Continue with TCWG-777, TCWG-835, TCWG-871

9 years, 9 months

1
0
0 0

[Weekly] 24-28 AUGUST 2015

by Michael Collison

== This week == * TCWG-832 -Exploit vector multiply by scalar instructions when multiple scalars are used as coefficients in a loop (2/10) - Initial investigation. * TCWG-833 - Exploit Wide Add operations when appropriate (4/10) - Ramana is reviewing Aarch32 patch - Recoded Aarch64 support to use vect_select - Debugging Aarch64 lto, tree-dump regression suite failures * TCWG-834 - Use non-unit stride loads by preference when applicable (1/10) - TCWG 834 is Bugzilla 67323 upstream; Richard Biener took ownership as a vectorizer failure - My plan was to write a test case that failed until fixed, but Richard indicated this is not standard practice - Bugzilla 57195 (mode iterator bug) blocked compiling new pattern (1/10) - Separated patch from Bugzilla 67321 patch and sent upstream - Pinged upstream for comments - Bugzilla 67320 - Incorrect standard names for wide addition (1/10) - committed upstream in trunk * Misc (1/10) - Conference calls == Next week == - Resolve Aarch64 TCWG-833 patch, validate and upstream - Additional investigation into TCWG-832

9 years, 9 months

1
0
0 0

[ACTIVITY] 24th - 28th August

by Charles Baylis

Bug 1764/PR67280 C++ wrong code bug (no card yet) [9/10] Misc [1/10]

9 years, 9 months

1
0
0 0

[ACTIVITY] 17th - 21st August

by Charles Baylis

Holiday [2/10] Bug 1764/PR67280 C++ wrong code bug (no card yet) [4/10] Misc [4/10]

9 years, 9 months

1
0
0 0

[ACTIVITY] 24th - 28th August

by Yao Qi

# Progress # * TCWG-857 [3/10] With one kernel fix, HW breakpoint works for unaligned address (2-byte aligned). Debug linux kernel with KGDB. KGDB exposes an existing GDB bug, I fixed it, but need some time thinking about how to submit it upstream. * TCWG-567, arm watchpoint fixes [4/10]. All fails are fixed, but need another round of test to confirm. ARM HW watchpoint doesn't work on 4.0.0 kernel, but I don't investigate on it. * TCWG-757 [2/10], some patches review. * Misc, meeting, [1/10] # Plan # * TCWG-857. * Upstream the leftover of aarch64 multi-arch patches. -- Yao

9 years, 9 months

1
0
0 0

[ACTIVITY] Week 34

by Yvan Roux

== Progress == o Linaro GCC validation (9/10) * Analysed x86_64 fstack-protector and sse2 issue * This is due to "ulimit -v" usage which brakes asan testing and gcc testsuite caching mechanism. * Validation is now stable on Hetzner/Austin hardware * Documented summer validation issues * Validate and committed on-going backports o Upstream GCC (0/10) * Armeb OOM fix committed into gcc-5 o Misc (1/10) * Various meetings == Plan == o 3 days off o Continue backports/validation

9 years, 9 months

1
0
0 0

[ACTIVITY] 17th - 21st August

by Kugan

== Progress == * Widening pass (TCWG-547) - 8/10 - Fixed all but one execution test failure. - aarch64 and x86 are clean - arm has one but this looks like a latent issue (in expand); looking into it - Latest trunk with aarch64 miscompiles stage2 fwprop (-fno-forwprop works). This happens with the commit 94f92c36a83d66a893c3bc6f00a038ba3dbe2a6f [PR64164] Drop copyrename, use coalescible partition as base when optimizing - Tried forcing the same promote_mode for x86_64 and can reproduce it with x86_64 also. - Looking into it to see if this is an error with the commit * Misc - 2/10 - gcc-patches, gcc-bugs list == Plan == - Continue with widening pass

9 years, 9 months

1
0
0 0

[ACTIVITY] 17th - 21st August

by Bernie Ogden

Upcoming Absences * Away from this Wednesday until next Tuesday, inclusive Benchmark infrastructure - TCWG-360 [1/10] * Finished filling out cards/bugs for benchmarking work * Which makes the rest of this report more fine-grained Multinode wrapper - TCWG-888 [2/10] * Completed oversubscription workaround * Herded most tests through * Uncovered one significant bug, seems fixed Centralized source/results storage - TCWG-722 [1/10] * Wrote draft of source/results handling rules * Confirmed that old repos are subsets of new repos Noise control experiments - TCWG-897 [2/10] * Learned more about firmware, openembedded * Juno running a minimal filesystem, needs some tidying up Misc [4/10] * Including a further 1/10 of ARM management =Plan= * Herd remaining multinode tests through ** Depends on LAVA lab coming back from power cut ** And queues being short enough * Progress (finish?) Juno bring-up * Share source/results rules draft

9 years, 9 months

1
0
0 0

[Weekly] 17-21 AUGUST 2015

by Michael Collison

== This week == * TCWG-833 - Exploit Wide Add operations when appropriate (8/10) - Reworked patch to use vect_select instead of unspec as requested by Ramana - Bugzilla 57195 (mode iterator bug) blocked compiling new pattern - Created patch which successfully bootstrapped - Created Bugzilla 67320 - Incorrect standard names for wide addition (documentation bug) - Successfully regression tested Aarch32 changes - Send Aarch32 patch upstream for review - Reworking patch for Aarch64 to use vect_select as well - Created Bugzilla 67321 - [ARM] Exploit wide adds when appropriate - Created Bugzilla 67322 - [Aarch64] Exploit wide adds when appropriate * TCWG-834 - Use non-unit stride loads by preference when applicable (1/10) - Created Bugzilla 67323 to track until fixed in GCC 6 by Richard Biener - Began writing test case that fails * Misc (1/10) - Conference calls == Next week == - Respond to Aarch32 TCWG-833 upstream requests and hopefully check-in patch - Complete Aarch64 TCWG-833 patch, validate and upstream - Finish testcase for TCWG-834 and submit upstream

9 years, 9 months

1
0
0 0

[ACTIVTY]

by Renato Golin

== Progress == * Maintenance (CARD-1833 2/10) - Fixing libc++abi build on AArch64 - Trying to remove a hack in ARMTargetInfo about default CPUs - Bisecting PR24292 - Working with ARM to fix it, backport * Buildbots (CARD-1823 8/10) - Working with Adhemerval on VMA 42bits sanitizer - Setting up a libc++ "full" build on the second stage, since gcc can't build it yet. 171 tests fail. - Ubuntu Vivid (39-bits VA / 4k pages) with Uboot is the winner of stability, speed and easiness. - Power outage meant I had to unbreak *a lot* of broken stuff * Background (2/10) - Code review, meetings, discussions, etc. - Some Android/TSAN/AArch64 shenanigans == Plan == Holidays all week == Issues == Yes, it does add up to 12/10, since I had to work most of Saturday and some of Sunday to fix the mess that the power cuts made on our lab. If we had generators, that wouldn't have happened.

9 years, 9 months

1
0
0 0

[activity] 17-21 August 2015

by Prathamesh Kulkarni

== This Week == * TCWG-835 (2/10) - Testing on SPEC CPU2006 - Found ICE while testing on spec unrelated to my patch, created reduced test-case. * TCWG-777 (2/10) - Working on RTL pass - enhanced it so it only replicates insn when required. - Prototype patch works for the test-case but ICE's during toolchain build. - Trunk generates expected output for -O2, git-bisect shows from r226516 * TCWG-871 (1/10) - Built for x86_64 non LTO - Trying to cross compile for ARM * Sick Leave (2/10) * Public Holiday (2/10) * Misc (1/10) - Meetings == Next Week == - Continue with TCWG-777, TCWG-835, TCWG-871

9 years, 9 months

1
0
0 0

[ACTIVITY] 17-21 August 2015

by Christophe Lyon

== Progress == == Next == * GCC (4/10) - AdvSIMD failures on aarch64_be. Struggling with vectorizer regressions. * Releases/snapshots/validation (3/10) * Misc (3/10) - meetings, conf-calls, emails == Next == * GCC aarch64_be AdvSIMD * Validation / reviews / backports

9 years, 9 months

1
0
0 0

[ACTIVITY] 17 - 21 August 2015

by Yao Qi

# Progress # * TCWG-806, aarch64 remote debugging multi-arch support. Patches are pushed in. Done. [2/10] * TCWG-857, HW breakpoint/watchpoint in multi-arch. [3/10] Both GDB and linux kernel needs some fixes. Fix one bug in GDB. Read ARMv8 manual about byte address select for thumb code (2-byte aligned instruction) and the implementation in kernel. * TCWG-757 some patches review, [1/10] * Misc [4/10] ** ARM new starter training on Wed. afternoon and Thu. ** Read early-debug https://gcc.gnu.org/wiki/early-debug # Plan # * TCWG-857. * Update the state of some old linaro tickets on GDB. -- Yao

9 years, 9 months

1
0
0 0

Cross compile tool chain libs not found issue

by Yendapally Reddy Dhananjaya Reddy

Hi, I compiled the Linaro cross tool chain for arm v7 SOC and using the buildroot to create the images. When I use the downloaded precompiled tool chain from linaro releases, I am not facing any issues. But with compiled tool chain, multiple packages are failing with similar to below mentioned error. I tried building cross tool chain on both redhat and Ubuntu machines. When I see the difference of gcc -v, the cross compile is with "--host=x86_64-build_unknown-linux-gnu" and the pre compiled is with "--host=i686-build_pc-linux-gnu". I tried with "crosstool-ng-linaro-1.13.1-4.9-2014.08.tar.bz2" and "crosstool-ng-linaro-1.13.1-4.9-2014.09.tar.bz2". configure:25287: checking for MD5 in -lcrypto configure:25312: /projects/broadcom-linux/dhananjay/nas/iproc/buildroot/output/host/usr/bin/arm-linux-gnueabihf-gcc -std=gnu99 -o conftest -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -pipe -Os -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 conftest.c -lcrypto >&5 /projects/broadcom-linux/dhananjay/toolchain/tool9/toolchain/lib/ct-ng-linaro-1.13.1-4.9-2014.08/install/lib/gcc/arm-linux-gnueabihf/4.9.2/../../../../arm-linux-gnueabihf/bin/ld: warning: libdl.so.2, needed by /projects/broadcom-linux/dhananjay/nas/iproc/buildroot/output/host/usr/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libcrypto.so, not found (try using -rpath or -rpath-link) -bash-4.1$ uname -a Linux lab-rtp-gw-05 2.6.32-358.23.2.el6.x86_64 #1 SMP Sat Sep 14 05:32:37 EDT 2013 x86_64 x86_64 x86_64 GNU/Linux Can somebody help me here. Thanks Dhananjay

9 years, 9 months

1
0
0 0

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

9 years, 9 months

2
1
0 0

[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

9 years, 9 months

1
0
0 0

[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

9 years, 9 months

1
0
0 0

[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.

9 years, 9 months

1
0
0 0

[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

9 years, 9 months

1
0
0 0

[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

9 years, 9 months

1
0
0 0

[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

9 years, 9 months

1
0
0 0

[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

9 years, 9 months

1
0
0 0

[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

9 years, 9 months

1
0
0 0

[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.

9 years, 9 months

1
0
0 0

[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

9 years, 9 months

1
0
0 0

[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

9 years, 9 months

1
0
0 0

[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

9 years, 10 months

1
0
0 0

[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.

9 years, 10 months

1
0
0 0

[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

9 years, 10 months

1
0
0 0

[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

9 years, 10 months

1
0
0 0

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

linaro-toolchain