- linaro-toolchain - lists.linaro.org

[Weekly] 15-19 JUNE 2015

by Michael Collison

== This week == * Sprint recovery day (2/10) * TCWG-140 - Transform end of loop conditions to min_expr (6/10) - Investigated match.pd change added by Andrew Pinski * TCWG-734 - GCC Autovectorization (1/10) - EPIC Review * Misc (1/10) - Conference calls == Next week == - Call with Charles and Prathamesh for Autovectorization planning - Begin developing patch for TCWG-140 - Benchmark TCWG-146 patch - TCWG-832 investigation

9 years, 10 months

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[ACTIVITY] 15-19 June

by Kugan

== Progress == * Upstream GCC Bugs(5/10) - PR66554 - PR64130 - PR60001 * Misc (3/10) - Started experimenting with TACT - gcc-patches, gcc-bugs list - Meetings * Sprint recovery (2/10) == Plan == - GCC Bugs - TACT driven optimization exploration for gcc

9 years, 10 months

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[ACTIVITY] 15-19 June

by Prathamesh Kulkarni

== This week == * cfgloop.h flatten (2/10) - Rebased and tested on top of Andrew's patch - bootstrapped on x86_64-unknown-linux-gnu - building on all targets in config-list.mk in progress * TCWG-777 (2/10) - Problem is still present on trunk - Original test-case: http://pastebin.com/UTv8g3aA - Original test-case assembly for -O1: http://pastebin.com/815TgDjV - Possibly reduced test-case: http://pastebin.com/UGUteX4a - Assembly for reduced test-case for -O1: http://pastebin.com/edKu6CxH - x86 assembly for reduced test-case for -O1: http://pastebin.com/9APbJeLr - Workaround: To disable CSE in branch conditions make flags volatile. This prevents storing result of ands to temporary but leads to worse code-gen. - Possible approaches from (https://bugs.launchpad.net/gcc-linaro/+bug/851258): a) teach PRE not to fold in such cases ? I don't know how. b) Write a new tree-ssa pass that "unfolds" cse on result of test conditions. Check if operand in if (operand != 0) is a result of test condition. eg: _8 = flags & 1; if (_8 != 0) goto true_branch else goto false_branch In this case we could add an attribute to _8 say "unfold". If we again come across if (_8 != 0) at a later point, and it's marked with "unfold", we can create a new ssa var with definition of _8. so it becomes: _9 = flags & 1; if (_9 != 0) ... which will "undo" CSE on test conditions. Does this sounds reasonable ? Should we do it on all test conditions ? I don't understand "suitable compare insn" a target should have in above link. * TCWG-145 (2/10) - Optimization is already implemented in PRE pass. - Verified for various test-cases in eembc. - Currently gcc does not convert global statics to locals - remove-local-statics-7.c not handled currently by gcc: (https://gcc.gnu.org/ml/gcc-patches/2008-07/msg01007.html) - Desirable to have ipa dead-store analysis to avoid stores to static vars: https://gcc.gnu.org/ml/gcc-patches/2008-07/msg01609.html https://gcc.gnu.org/ml/gcc-patches/2008-07/msg01602.html - continuing to look for cases where static-to-locals wins over PRE. * Misc (4/10) - Built firefox on x86 non-LTO - Read thru tree-ssa-dse.c, IPA, LTO doc - US Visa application - Setting up home office == Issues == Not able to connect to #linaro-tcwg thru ircproxy.linaro.org , password invalid. == Next Week == - TCWG-830 - TCWG-835 - TCWG-844 - continue investigating branch out of range error issue. - Work towards committing cfgloop.h patch

9 years, 10 months

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[ACTIVITY] 15-19 June

by Charles Baylis

== Progress == Sprint recovery [2/10] (TCWG-775) NEON intrinsics error messages [7/10] . familiarisation with differences between ARM and AArch64 NEON/SIMD backends . started porting error reporting changes to ARM NEON backend . pinged patch for AArch64 work Misc [1/10] == Plans == continue NEON error messages vectorization work discussions

9 years, 10 months

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[ACTIVITY]

by Renato Golin

== Progress == * Maintenance (CARD-1833 1/10) - Looking at AArch64 ADD->SUB a bit more * Buildbots (CARD-1823 6/10) - Moving LNT bot to CMake - Setting up LLD and LLDB buildbots - Investigating LNT instability / Perf buildbot * Background (3/10) - Code review, meetings, discussions, etc. - Reviewing more stride vectorizer patches (back-end) == Plan == * Try to get some development going back again...

9 years, 10 months

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[ACTIVITY] 15 - 19 June 2015

by Yao Qi

# Progress # * Linaro GDB [7/10] ** TCWG-805, aarch64 native debugging multi-arch support. Aarch64 GDB works well debugging Aarch32 programs, except on handling fork/vfork and watchpoint. Test harness uses ldd which doesn't handle aarch32 too. Report a kernel issue that it doesn't get TLS base right through ptrace in compat mode. Got a patch to fix it. * FSF GDB [3/10] ** Push in a fix to unbreak arm native gdb build. ** Post a patch to fix a bug on using PTRACE_GETREGSET on arm-linux. ** GDB 7.10 release. Branch isn't created. Test results of arm and aarch64 look good. # Plan # * TCWG-805, start to push some preparatory patches upstream. * Off on Thu. -- Yao

9 years, 10 months

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new gas feature: section name substitution sequence

by Nicolas Pitre

Hello toolchain people, I created a patch on top of upstream binutils for a feature I need which should be universally useful as well. Now I have 3 questions for you: 1) Does it look sane enough? 2) If so, could you integrate it in the Linaro release? 3) Would you be willing to promote it upstream? Comments appreciated. Here's the patch: ----- >8 Subject: [PATCH] gas: introduce section name substitution support When gas is invoked with --sectname-subst, the occurrence of %S in a section name will be substituted by the name of the current section. For example: .macro exception_code .pushsection %S.exception [exception code here] .popsection .endm .text [code] exception_code [...] .section .init [init code] exception_code [...] In the first exception_code invocation the .text.exception section is created while in the second invocation it is the .init.exception section that is created. This is useful e.g. to discriminate between anciliary sections that are tied to .init code and can be discarded at run time when initialization is over vs anciliary sections tied to .text sections that need to stay resident. This would also allow for actually omitting __exit sections from the Linux kernel binary when modules are configured in even when exit marked code generates exception table entries. Signed-off-by: Nicolas Pitre <nico(a)linaro.org> diff --git a/gas/ChangeLog b/gas/ChangeLog index 57fc30a..0189bb2 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,11 @@ +2015-06-03 Nicolas Pitre <nico(a)linaro.org> + + * as.c (show_usage): Document --sectname-subst. + (parse_args): Add --sectname-subst. + * as.h (flag_sectname_subst): New. + * config/obj-elf.c (obj_elf_section_name): Add %S substitution. + * doc/as.texinfo: Document it. + 2015-06-03 Matthew Wahab <matthew.wahab(a)arm.com> * config/tc-arm.c (arm_archs): Add "armv8.1-a". diff --git a/gas/as.c b/gas/as.c index 2a8923f..fecfcd2 100644 --- a/gas/as.c +++ b/gas/as.c @@ -284,6 +284,8 @@ Options:\n\ fprintf (stream, _("\ --size-check=[error|warning]\n\ ELF .size directive check (default --size-check=error)\n")); + fprintf (stream, _("\ + --sectname-subst enable section name substitution sequences\n")); #endif fprintf (stream, _("\ -f skip whitespace and comment preprocessing\n")); @@ -447,6 +449,7 @@ parse_args (int * pargc, char *** pargv) OPTION_EXECSTACK, OPTION_NOEXECSTACK, OPTION_SIZE_CHECK, + OPTION_SECTNAME_SUBST, OPTION_ALTERNATE, OPTION_AL, OPTION_HASH_TABLE_SIZE, @@ -481,6 +484,7 @@ parse_args (int * pargc, char *** pargv) ,{"execstack", no_argument, NULL, OPTION_EXECSTACK} ,{"noexecstack", no_argument, NULL, OPTION_NOEXECSTACK} ,{"size-check", required_argument, NULL, OPTION_SIZE_CHECK} + ,{"sectname-subst", no_argument, NULL, OPTION_SECTNAME_SUBST} #endif ,{"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL} ,{"gdwarf-2", no_argument, NULL, OPTION_GDWARF2} @@ -848,6 +852,10 @@ This program has absolutely no warranty.\n")); else as_fatal (_("Invalid --size-check= option: `%s'"), optarg); break; + + case OPTION_SECTNAME_SUBST: + flag_sectname_subst = 1; + break; #endif case 'Z': flag_always_generate_output = 1; diff --git a/gas/as.h b/gas/as.h index 6de319e..635b2c5 100644 --- a/gas/as.h +++ b/gas/as.h @@ -589,6 +589,9 @@ COMMON enum size_check_warning } flag_size_check; + +/* If section name substitution sequences should be honored */ +COMMON int flag_sectname_subst; #endif #ifndef DOLLAR_AMBIGU diff --git a/gas/config/obj-elf.c b/gas/config/obj-elf.c index 4d7a8a7..78dc6d9 100644 --- a/gas/config/obj-elf.c +++ b/gas/config/obj-elf.c @@ -917,6 +917,27 @@ obj_elf_section_name (void) name = (char *) xmalloc (end - input_line_pointer + 1); memcpy (name, input_line_pointer, end - input_line_pointer); name[end - input_line_pointer] = '\0'; + + while (flag_sectname_subst) + { + char *subst = strchr (name, '%'); + if (subst && subst[1] == 'S') + { + int oldlen = strlen (name); + int substlen = strlen (now_seg->name); + int newlen = oldlen - 2 + substlen; + char *newname = (char *) xmalloc (newlen + 1); + int headlen = subst - name; + memcpy (newname, name, headlen); + strcpy (newname + headlen, now_seg->name); + strcat (newname + headlen, subst + 2); + xfree (name); + name = newname; + } + else + break; + } + #ifdef tc_canonicalize_section_name name = tc_canonicalize_section_name (name); #endif diff --git a/gas/doc/as.texinfo b/gas/doc/as.texinfo index 5710e1c..be13b6a 100644 --- a/gas/doc/as.texinfo +++ b/gas/doc/as.texinfo @@ -6259,6 +6259,36 @@ For ELF targets, the @code{.section} directive is used like this: .section @var{name} [, "@var{flags}"[, @@@var{type}[,@var{flag_specific_arguments}]]] @end smallexample +@cindex --sectname-subst +If the @samp{--sectname-subst} command-line option is provided, the @var{name} +argument may contain a substitution sequence. Only @code{%S} is supported +at the moment, and substitutes the current section name. For example: + +@smallexample +.macro exception_code +.section %S.exception +[exception code here] +.previous +.endm + +.text +[code] +exception_code +[...] + +.section .init +[init code] +exception_code +[...] +@end smallexample + +The two @code{exception_code} invocations above would create the +(a)code{.text.exception} and @code{.init.exception} sections respectively. +This is useful e.g. to discriminate between anciliary sections that are +tied to setup code to be discarded after use from anciliary sections that +need to stay resident without having to define two @code{exception_code} +macros just for that purpose. + The optional @var{flags} argument is a quoted string which may contain any combination of the following characters: @table @code Nicolas

9 years, 10 months

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[ACTIVITY] 15-19 June 2015

by Christophe Lyon

* 1 day off (2/10) == Progress == * Neon intrinsics tests - committed last batch of tests - need to think about tests for vget_lane which are still missing, but not high priority * linaro-gcc-5.1-2015.06 snapshot (4/10) - committed branch merge with upstream gcc-5-branch - prepared snapshot & updated release scripts * Upstream maintenance (1/10) - backported a fix from Michael to 4.8 and 4.9 branches - backported fix for PR62308 to 4.9 branch - most of the time spent on bootstrapping on aarch64 HW - started looking at some recent new tests having trouble dealing with some multilib variants * Misc (3/10) - meetings, conf-calls, emails, ... == Next == * linaro-gcc-5.1-2015.06 snapshot - build release notes - create a proper tag * backports, release, validation: - update doc according to our new process * validation: - take unstable tests into account * upstream maintenance: - check recent regressions

9 years, 10 months

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[ACTIVITY]

by Renato Golin

== Progress == * Maintenance (CARD-1833 2/10) - Initial work on ADD<->SUB for negative imm in asm * Buildbots (CARD-1823 6/10) - Adding test-suite to CMake buildbot (D10244) - Bisecting broken self-hosting vfp3 bots * Background (2/10) - Code review, meetings, discussions, etc. - Some more meetings about infrastructure... - LLVM status and plan for next half * Sprint Week in Grenoble == Plan == * Continue with CMake LNT changes * Carry on with ADD/SUB change * Revive ASM warnings discussion

9 years, 11 months

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mfpu=neon and -march=native on aarch64-linux-gnu toolchain

by Virendra Kumar Pathak

Hi Linaro Toolchain Group, I have questions regarding -mfpu=neon and -march=native w.r.t aarch64 linaro native toolchain (aarch64-linux-gnu) I found gcc is not accepting these flags. On juno Board: gcc -mfpu=neon hello.c -o hello gcc: error: unrecognized command line option '-mfpu=neon' gcc -march=native hello.c -o hello hello.c:1:0: error: unknown value 'native' for –march Am I missing something ? Please help. Below is the machine details uname -a Linux juno 3.10.55.0-1-linaro-lt-vexpress64 #1ubuntu1~ci+141022094025 SMP Wed Oct 22 09:41:06 UTC 2014 aarch64 aarch64 aarch64 GNU/Linux gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/local/apps/gcc-native/gcc-linaro-5.1-2015.06.06.native-i686-mingw32_aarch64-linux-gnu/bin/../libexec/gcc/aarch64-linux-gnu/5.1.1/lto-wrapper Target: aarch64-linux-gnu Configured with: '/home/user_name/vpathak/build_abe/snapshots/gcc.git~linaro-4.9-branch/configure' SHELL=/bin/sh --with-bugurl=https://bugs.linaro.org --with-mpc=/home/user_name/vpathak/build_abe/builds/destdir/aarch64-linux-gnu --with-mpfr=/home/user_name/vpathak/build_abe/builds/destdir/aarch64-linux-gnu --with-gmp=/home/user_name/vpathak/build_abe/builds/destdir/aarch64-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-arch=armv8-a --disable-shared --enable-static --with-build-sysroot=/home/user_name/vpathak/build_abe/sysroots/aarch64-linux-gnu --enable-lto --enable-linker-build-id --enable-long-long --enable-shared --with-sysroot=/home/user_name/vpathak/build_abe/builds/destdir/aarch64-linux-gnu/aarch64-linux-gnu/libc --enable-languages=c,c++,fortran,lto --enable-fix-cortex-a53-835769 --enable-checking=release --disable-bootstrap --with-bugurl= https://bugs.linaro.org --build=x86_64-unknown-linux-gnu --host=aarch64-linux-gnu --target=aarch64-linux-gnu --prefix=/home/user_name/vpathak/build_abe/builds/destdir/aarch64-linux-gnu Thread model: posix gcc version 5.1.1 (GCC) Thanks. -- with regards, Virendra Kumar Pathak

9 years, 11 months

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gcc-5 git branch

by Virendra Kumar Pathak

Hi Linaro Toolchain Group, I see two git branches for GCC-5 at https://git.linaro.org 1. https://git.linaro.org/toolchain/gcc.git/shortlog/refs/heads/gcc-5-branch 2. https://git.linaro.org/toolchain/gcc.git/shortlog/refs/heads/linaro/gcc-5-b… What is the difference between these two branches ? Which branch should be used for development ? Is it branch (1) refers to GCC upstream branch for GCC5 & branch (2) is linaro version of branch (1). Please comment. -- with regards, Virendra Kumar Pathak

9 years, 11 months

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[ACTIVITY] 1st-5th June

by Bernie Ogden

Holiday [2/10] Benchmark Automation - TCWG-360 [4/10] * Learned about central Jenkins instance * Considered ways of integrating benchmark scripts with said instance * Considered alternative way for benchmark scripts to interoperate with LAVA Misc [4/10] * Large mail backlog * Travel prep =Plan= Team sprint

9 years, 11 months

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[ACTIVITY] 01 - 06 June 2015

by Yao Qi

# Progress # * Linaro GDB [4/10] ** TCWG-805, aarch64 native debugging multi-arch support. aarch64 native gdb is able to debug arm program now, but with some problems on coredump. Patches are not posted. ** Give my input on GDB kernel awareness too, and the proposal finally is posted upstream. * FSF GDB [1/10] ** Patches review. * Misc [5/10] ** Attend an internal ARM Debug/Tracing summit. ** Prepare for the France travel. # Plan # * Sprint in Grenoble. -- Yao

9 years, 11 months

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

by Virendra Kumar Pathak

Hi Linaro Toolchain Group, I am trying to build a cross-native toolchain for AARCH64 using ABE build framework. By cross native I mean that toolchain will be build on 0x86 (Red hat Santiago 6.4), it will run on AARCH64 (Juno) and will produce binaries to be run on AARCH64 (Juno) (If I am not mistaked) --build=0x86, --host=AARCH64, --target=AARCH64 Steps followed: 1. I built a cross toolchain first ../abe/configure ../abe/abe.sh --target aarch64-linux-gnu --build all --release 2015.05.29 --tarbin --disable update 2. Added the above cross toolchain (bin path) in the PATH 3. To build to cross-native ../abe/configure ../abe/abe.sh --host aarch64-linux-gnu --target aarch64-linux-gnu --build all --release 2015.06.01.native --tarbin --disable update But after some time, I got following error and compilation hanged. make: Leaving directory `/home/user_name/vpathak/build_abe/builds/aarch64-linux-gnu/aarch64-linux-gnu/gcc.git~linaro-4.9-branch-stage1' RUN: copy_gcc_libs_to_sysroot "/home/user_name/vpathak/build_abe/builds/destdir/aarch64-linux-gnu/bin/aarch64-linux-gnu-gcc --sysroot=/home/user_name/vpathak/build_abe/sysroots/aarch64-linux-gnu" /home/user_name/vpathak/abe/lib/make.sh: line 962: ./builds/destdir/aarch64-linux-gnu/bin/aarch64-linux-gnu-gcc: cannot execute binary file Am I missing something ? Please help. However with the following hack in the abe, I am able to compile cross-native toolchain for aarch64-linux-gnu. In the abe code base: ------------------------------------------------------------------------------------------------------- lib/make.sh Function copy_gcc_libs_to_sysroot() gcc_exe="`find -name ${target}-gcc`" - libgcc="`${gcc_exe} -print-file-name=${libgcc}`" + #libgcc="`${gcc_exe} -print-file-name=${libgcc}`" + libgcc="/home/user_name/vpathak/build_abe/builds/destdir/aarch64-linux-gnu/lib/gcc/aarch64-linux-gnu/4.9.3/libgcc.a" Since './builds/destdir/aarch64-linux-gnu/bin/aarch64-linux-gnu-gcc' is native toolchain it will not run on 0x86. Thus libgcc will be empty. Therefore I hard-coded libgcc path. ------------------------------------------------------------------------------------------------------- I had to disable gdb compilation. This error I faced while compiling cross-native compilation only. Cross compilation is successful on the same 0x86 machine. checking for library containing waddstr... no configure: error: no enhanced curses library found; disable TUI make: *** [configure-gdb] Error 1 make: Leaving directory `/home/user_name/vpathak/build_abe/builds/aarch64-linux-gnu/aarch64-linux-gnu/binutils-gdb.git~linaro_gdb-7.8-branch-gdb' WARNING: Make had failures! ERROR (#159): build_all (Failed building .) hacked patch --- a/lib/make.sh +++ b/lib/make.sh @@ -31,10 +31,10 @@ build_all() # to rebuilt the sysroot. local builds="infrastructure binutils libc stage2 gdb" else - local builds="infrastructure binutils stage1 libc stage2 gdb" + local builds="infrastructure binutils stage1 libc stage2" fi if test "`echo ${target} | grep -c -- -linux-`" -eq 1; then - local builds="${builds} gdbserver" + local builds="${builds}" fi --------------------------------------------------------------------------------------------------------------- Thanks. -- with regards, Virendra Kumar Pathak

9 years, 11 months

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Tool for checking coding style in Linaro Toolchain

by Virendra Kumar Pathak

Hi Linaro Toolchain Group, Is there any tool for checking coding style of the patches submitted to the Linaro Toolchain ? In other word is there any equivalent of Linux checkpatch.pl in Linaro Toolchain (GCC, Binutils etc) ? If yes, please let me know. If not, then in general how people check the coding style of the patches they submit to Linaro Toolchain (GCC, Binutils etc). I assume manual inspection (line by line) may be very tedious thing to do. Thanks. -- with regards, Virendra Kumar Pathak

9 years, 11 months

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[ACTIVITY] 25 - 29 May 2015

by Kugan

== Progress == * Upstream GCC (8/10) - TCWG-486 - Optimize Constant Uses in Loops. - Jeff reviewed it and asked for some minor changes - Rebased and redid full testing and posted it - TCWG-555 - Complete re-write of widening pass based on review comments - Getting ready to post for review * Misc (2/10) - Reading TACT User Manual - gcc-patches, gcc-bugs list - Meetings == Plan == - Continue with gcc stage1 activities

9 years, 11 months

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[Weekly] 25-29 MAY 2015

by Michael Collison

== This week == * Bug 539 - .LTHUNK symbols are surviving (2/10) - Built Qt 4.8 using 4.9 and 4.9 toolchain and verified fix identified by Jim Wilson - Plan to close as fixed * Bug 535 - static cast from float to int not working on ARM hardfp (2/10) - Investigation * TCWG-140 - Transform end of loop conditions to min_expr (1/10) - Investigation into blueprint and patch * TCWG-146 - Detect smin/umin idiom (2/10) - After investigation no patch deemed necessary for aarch64 * Misc (1/10) - Conference calls * US Holiday - Memorial Day, May 25th (2/10) == Next week == - Submit Aarch32 patch for TCWG-146 upstream - TCWG-140 investigation

9 years, 11 months

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[ACTIVITY] Week 22

by Prathamesh Kulkarni

== This week == * TCWG-619 (4/10) - Chromium builds with LTO single-partition with gold by changing arm_is_long_call_p() to always return true, thereby disabling short calls. - Fails to build with ld.bfd for single partiition with the following error: obj/third_party/webrtc/base/rtc_base.ipaddress.o: In function `rtc::IPAddress::IPAddress(unsigned int)': ipaddress.cc:(.text._ZN3rtc9IPAddressC2Ej[_ZN3rtc9IPAddressC5Ej]+0x28): undefined reference to `vtable for rtc::IPAddress' - gas debug for "Thumb2 branch out of range" in config/tc-arm.c: Fails in md_apply_fix at following condition: if ((value & ~0x3fffff) && ((value & ~0x3fffff) != ~0x3fffff)) { if (!(ARM_CPU_HAS_FEATURE (cpu_variant, arm_arch_t2))) as_bad_where (fixP->fx_file, fixP->fx_line, BAD_RANGE); else if ((value & ~0x1ffffff) && ((value & ~0x1ffffff) != ~0x1ffffff)) as_bad_where (fixP->fx_file, fixP->fx_line, _("Thumb2 branch out of range")); } The condition became true for value == fffffda Backtrace: http://pastebin.com/QZqbwNCy Options passed to as: -march=armv7-a -march=armv7-a -mfloat-abi=hard -mfloat-abi=hard -mfpu=neon -mfpu=neon -meabi=5 - Disabling the above condition results in: arm-linux-gnueabihf-g++: internal compiler error: Killed (program lto1) * PR49551 (2/10) - Modified patch and retested on x86 and arm. - Submitted patch upstream for review. * Misc (4/10) - Exams ended on Monday. - College Annual day. == Next Week == - Work towards getting the patch approved. - Continue investigating "Thumb2 branch out of range" error. - Begin with TCWG-777. - Submit cfgloop.h flattening patch upstream.

9 years, 11 months

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question on bfd - arch & mach

by Virendra Kumar Pathak

Hi Linaro Toolchain Group, I am going through the binutils code base specific to arm & aarch64. Please give some insight on below questions. 1. In the struct bfd_arch_info {...} (in bfd/bfd-in2.h) there are two fields 'enum bfd_architecture arch' and 'unsigned long mach'. I went trough the binutils porting guide (by MR.Swami.Reddy(a)nsc.com) which says 'arch' is for architecture & 'mach' is for machine value. At present in the bfd/bfd-in2.h :- arch = bfd_arch_aarch64 and mach = bfd_mach_aarch64 or bfd_mach_aarch64_ilp32. But what these fields really means ? What is the difference between 'arch' and 'mach'? Lets say instruction set architecture is ARMv8 (also known as aarch64 for 64 bit- if I am not wrong). Then we have specific implementation of this like cortex53, cortex57, Cavium ThunderX etc. With respect to this what will be the value of arch = ? and mach = ? 2. In the include/opcode/arm.h the 'arm_feature_set' is defined as a structure where as in include/opcode/aarch64.h 'aarch64_feature_set' is defined as unsigned long. Is there any specific reason for this? Why structure definition was not followed in aarch64 ? typedef struct { unsigned long core; unsigned long coproc; } arm_feature_set; typedef unsigned long aarch64_feature_set; 3. Also I see that in the case of arm, 'mach' values are derived from cpu extension value specified in that 'arm_feature_set' structure. For example. if (ARM_CPU_HAS_FEATURE (cpu_variant, arm_cext_iwmmxt2)) mach = bfd_mach_arm_iWMMXt2; Whereas in aarch64 mach is derived based on API type (64 or 32). Any reason for this ? mach = ilp32_p ? bfd_mach_aarch64_ilp32 : bfd_mach_aarch64; Thanks in advance. -- with regards, Virendra Kumar Pathak

9 years, 11 months

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[ACTIVITY] 25-29 May

by Charles Baylis

== Progress == TCWG-775 NEON error messages (2/10) . wrote new patch for Aarch64 . tried to test it, but GCC testsuite stopped working on my laptop (random failures with "test for errors, tests randomly being marked UNSUPPORTED) Bank Holiday [2/10] Bug #1599 [1/10] . reproduced bug on Linaro GCC 4.9 , bisected both the cause and the trunk fix Misc [5/10] . attempted to diagnose GCC testsuite problems. Seems to be related to kernel version somehow. . Erratum workaround stuff (bug 1550, bug 1596) == Plans == Find working kernel for laptop Cleanup/submit patch for TCWG-775 Create JIRA cards following vectorization study (TCWG-735)

9 years, 11 months

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[ACTIVITY] 25 May -- 29 May

by Yao Qi

Bank holiday on Monday. [2/10] # Issue # No. Ubuntu is successfully installed on my chromebook. # Progress # * Linaro GDB [4/10] ** TCWG-517, GDB AAarch64 record/replay. Done. Patches are committed upstream. Fix one build failure caused these patches. ** TCWG-805, aarch64 native debugging multi-arch support. *** Switch to PTRACE_GETREGSET and PTRACE_SETREGSET. Patches are posted upstreams. *** Get ubuntun 14.02 running on chrombook successfully. ** Give my input on GDB kernel awareness too. * FSF GDB [3/10] ** PR 18392, review the fix and understand the code about tail call unwinding. ** Approve and commit some tiny patches. * Misc [1/10] ** Prepare for incoming France travel. ** Book flight and hotel for GNU Tools Cauldron. Next week: * TCWG-805, aarch64 native debugging multi-arch support. -- Yao

9 years, 11 months

1
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[ACTIVITY]

by Renato Golin

== Progress == * Bank Holiday (2/10) * Maintenance (CARD-1833 6/10) - Finished all FIXMEs in LLVM and Clang - Working on ASM warnings * Background (2/10) - Code review, meetings, discussions, etc. - Updated arm-bots.html to account for build num, commit range == Plan == * Continue working on ASM warnings * Move a few left-overs in ARMAsmParser to use ARMTargetParser If time allows... * Check the ADD -> SUB change in the assembler * Try to get the test-suite running on a CMake buildbot Background * Check the progress of some Android bugs

9 years, 11 months

1
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[ACTIVITY] 25-29 May 2015

by Christophe Lyon

* 1 day off * Neon intrinsics tests (4/10) - submitted last set for review * Misc (4/10) - meetings, conf-calls, emails, ... - checks for our new GCC mirror == Next == * Neon intrinsics tests: work on vget_lane test. * linaro-gcc-5.1-2015.06 release: - start working on backports

9 years, 11 months

1
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[Weekly] 18-22 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 (3/10) - Developing patch for Aarch64 for completeness * Vacation (4/10) == Next week == - Complete Aarch64 patch for TCWG-146 - Validate TCWG-146 - TCWG-140 investigation

9 years, 11 months

1
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[ACTIVITY] Week 21

by Prathamesh Kulkarni

* TCWG-619 (2/10) - "branch out of range" error disappears by disabling sibling call optimization - using gold results in internal error at arm.cc:4192 - using ld.bfd results in tons of same errors message during LINK chrome - "thumb2 branch out of range" - building with "-dp" option shows the error comes for function calls, generated from pattern call_value_symbol. * PR49551 (2/10) - Bootstrapped on x86, tested on x86 and arm. - added test-case. * Misc (6/10) - Exams == Next Week == - Submit patch to PR49551 upstream - Continue investigating "branch out of range" error. - Rebase and submit cfgloop.h flattening patch upstream.

9 years, 11 months

1
0
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[ACTIVITY] 18-22 May 2015

by Kugan

== Progress == * Upstream GCC (8/10) - vector cost (TCWG-779) - benchmarking complete and analysed - Committed after full testing (bootstrap and regression testing) - Started working on widening pass based on review comments (TCWG-555) - Completed re-factoring with the new ideas - ran into many ICEs with the patch and making progress * Misc (2/10) - Looked at http://ctuning.org/wiki/index.php?title=CTools:MilepostGCC again - gcc-patches, gcc-bugs list - Meetings == Plan == - Continue with gcc stage1 activities

9 years, 11 months

1
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[ACTIVITY]

by Renato Golin

== Progress == * Releases (CARD-1431 1/10) - Final ARM/AArch64 3.6.1 * Automation Framework (CARD-1378 1/10) - More meetings with Lab about infrastructure * Maintenance (CARD-1833 5/10) - Working on FIXMEs to TargetParser * Buildbots (CARD-1823 1/10) - Bisecting self-hosting failure on thumbv7a * Background (2/10) - Code review, meetings, discussions, etc. - More stride vectorizer reviews (D9368) - Setting up boards for developers == Plan == * Finish the parser FIXMEs, get on with ASM warnings * Check some Android bugs and see if I can reduce their numbers * Probably a bit more infrastructure discussions

9 years, 11 months

1
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[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

9 years, 11 months

1
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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

9 years, 11 months

1
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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

9 years, 11 months

1
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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.

9 years, 12 months

1
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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

9 years, 12 months

1
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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

9 years, 12 months

1
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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

9 years, 12 months

1
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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

9 years, 12 months

1
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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

9 years, 12 months

1
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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

9 years, 12 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

9 years, 12 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

2
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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

2
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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

1
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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

1
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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

1
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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

1
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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

1
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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

1
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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

1
0
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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

1
0
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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

2
4
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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

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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

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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

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[ANNOUNCE] Linaro GCC 4.9 2015.04 snapshot re-spin

by Yvan Roux

This is a re-spin of the Linaro GCC 4.9 2015.04 source package snapshot. The re-spin of this snapshot includes a new configure-time option to enable by default a workaround for Cortex-A53 erratum number 843419 and options to explicitly disable or enable it during compilation. This snapshot tarball is available on: http://snapshots.linaro.org/components/toolchain/gcc-linaro/4.9-2015.04-1 Original release notes for GCC 4.9 2015.04 snapshot: The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2015.04 snapshot of the Linaro GCC 4.9 source package. Linaro GCC 4.9 2015.04 is the first Linaro GCC source package snapshot in the 4.9 series. It is based on FSF GCC 4.9.3-pre+svn222035 and includes performance improvements and bug fixes. With the imminent release of ARMv8 hardware and the recent release of the GCC 4.9 compiler the Linaro TCWG will be focusing on stabilization and performance of the compiler as the FSF GCC compiler. The Linaro TCWG provides stable[1] quarterly releases and monthly snapshots[2]. Interesting changes in this GCC source package snapshot include: * Linaro bugzilla PR fixed: #415, #1382, #1391 * Updates to GCC 4.9.3-pre+svn222035 * Backport of instruction scheduler improvements * Backport of [AArch64,Neon] Add patterns + builtins for vld[234](q?)_lane_* intrinsics * Backport of [AArch64] Implement fusion adrp+add/movk+movk * Backport of [AArch32] Cortex-A17 support * Backport of [AArch64] Fix __builtin_aarch64_absdi, must not fold to ABS_EXPR * Backport of PR rtl-optimization/63917 * Backport of PR tree-optimization/62178 tree-ssa-loop-ivopts * Backport of [AArch64] Add TARGET_MIN_DIVISIONS_FOR_RECIP_MUL * Backport of [AArch64] Simplify patterns for sshr_n_[us]64 intrinsic * Backport of [AArch64] Simplify+improve patterns for ushr(d?)_n_u64 intrinsic * Backport of [AArch32] Fix reservation pattern in cortex-a9-neon.md * Backport of [AArch64] Don't disparage add/sub in SIMD registers * Backport of [AArch64] Add SIMD-reg variants of logical operators and/ior/xor/not * Backport of [AArch64] Fix XOR_one_cmpl pattern; add SIMD-reg variants for BIC,ORN,EON * Backport of [AArch32] Use Cortex-A17 tuning parameters for Cortex-A12 * Backport of [AArch32] Make CLZ_DEFINED_VALUE_AT_ZERO and CTZ_DEFINED_VALUE_AT_ZERO return 2. * Backport of [AArch32] Minor optimization on thumb2 tail call * Backport of [AArch64] Update APM/XGene-1 * Backport of [AArch64] Add a new scheduling description for the ARM Cortex-A57 processor * Backport of [AArch64] Fix PR 64263: Do not try to split constants when destination is SIMD reg * Backport of [AArch64] Add support for -mcpu=cortex-a72 This snapshot tarball is available on: http://snapshots.linaro.org/components/toolchain/gcc-linaro/4.9-2015.04 Feedback and Support Subscribe to the important Linaro mailing lists and join our IRC channels to stay on top of Linaro development. ** Linaro Toolchain Development "mailing list": http://lists.linaro.org/mailman/listinfo/linaro-toolchain ** Linaro Toolchain IRC channel on irc.freenode.net at @#linaro-tcwg@ * Bug reports should be filed in bugzilla against GCC product: http://bugs.linaro.org/enter_bug.cgi?product=GCC * Interested in commercial support? inquire at "Linaro support": mailto:support@linaro.org [1] Stable source package releases are defined as releases where the full Linaro Toolchain validation plan is executed. [2] Source package snapshots are defined when the compiler is only put through unit-testing and full validation is not performed.

10 years

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502 connecting to abe.tcwglab.linaro.org

by Christopher Covington

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

10 years

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[ACTIVITY] 27 April - 1 May 2015

by Omair Javaid

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

10 years

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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

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[ACTIVITY] Week 18

by Yvan Roux

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

10 years

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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

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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

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[ACTIVITY] Week 18

by Prathamesh Kulkarni

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

10 years

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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)

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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

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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

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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

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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

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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

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[ACTIVITY] Week 17

by Yvan Roux

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

10 years

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[ACTIVITY] 20th - 24th April

by Kugan

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

10 years

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20 April 2015 -- 24 April 2015

by Yao Qi

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

10 years

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[ACTIVITY] 13 - 17 April 2015

by Omair Javaid

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

10 years

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Build u-boot using Linaro toolchain

by Joel (Xi Zhou) Zhou

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

10 years

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toolchain folders and content

by Robert Schwarz

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

10 years

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Linaro Toolchain Product Release Process Changes (Effective 2015.04)

by Ryan Arnold

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

10 years

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[ACTIVITY] 13th - 17th April

by Kugan

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

10 years

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[ACTIVITY] Week 16

by Yvan Roux

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

10 years

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[ACTIVITY] 13th - 17th April

by Bernie Ogden

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

10 years

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[ACTIVITY] 13th Apr - 17th April.

by Venkataramanan Kumar

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

10 years

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[Weekly] 13-17 APR 2015

by Michael Collison

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

10 years

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[ACTIVITY] Week 16

by Prathamesh Kulkarni

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

10 years

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[ACTIVITY]

by Renato Golin

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

10 years

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[ACTIVITY] 13 April 2015 -- 17 April 2015

by Yao Qi

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

10 years

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[ACTIVITY] 13-17 April 2015

by Christophe Lyon

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

10 years

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Issue building busybox using aarch64-linux-gnu 2014.11

by Kevin Petit

Hi, I (and several other people) am (are) having trouble to build busybox with the latest aarch64-linux-gnu 2014.11 binaries we got from linaro.org. It seems none of the built-in library search paths (gcc -print-search-dirs) allow to find crt[1i].o. They seem to be expected in a multiarch location but aren't (libc/usr/lib64). We're working around this with a symlink. Is this a bug? Have you seen similar issues? Here's a failing command-line and the associated error message: /path/to/gcc-linaro-4.9-2014.11-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-gcc -Wall -Wshadow -Wwrite-strings -Wundef -Wstrict-prototypes -Wunused -Wunused-parameter -Wunused-function -Wunused-value -Wmissing-prototypes -Wmissing-declarations -Wno-format-security -Wdeclaration-after-statement -Wold-style-definition -fno-builtin-strlen -finline-limit=0 -fomit-frame-pointer -ffunction-sections -fdata-sections -fno-guess-branch-probability -funsigned-char -static-libgcc -falign-functions=1 -falign-jumps=1 -falign-labels=1 -falign-loops=1 -fno-unwind-tables -fno-asynchronous-unwind-tables -Os -static -o busybox_unstripped -Wl,--start-group applets/built-in.o archival/lib.a archival/libarchive/lib.a console-tools/lib.a coreutils/lib.a coreutils/libcoreutils/lib.a debianutils/lib.a e2fsprogs/lib.a editors/lib.a findutils/lib.a init/lib.a libbb/lib.a libpwdgrp/lib.a loginutils/lib.a mailutils/lib.a miscutils/lib.a modutils/lib.a networking/lib.a networking/libiproute/lib.a networking/udhcp/lib.a printutils/lib.a procps/lib.a runit/lib.a selinux/lib.a shell/lib.a sysklogd/lib.a util-linux/lib.a util-linux/volume_id/lib.a archival/built-in.o archival/libarchive/built-in.o console-tools/built-in.o coreutils/built-in.o coreutils/libcoreutils/built-in.o debianutils/built-in.o e2fsprogs/built-in.o editors/built-in.o findutils/built-in.o init/built-in.o libbb/built-in.o libpwdgrp/built-in.o loginutils/built-in.o mailutils/built-in.o miscutils/built-in.o modutils/built-in.o networking/built-in.o networking/libiproute/built-in.o networking/udhcp/built-in.o printutils/built-in.o procps/built-in.o runit/built-in.o selinux/built-in.o shell/built-in.o sysklogd/built-in.o util-linux/built-in.o util-linux/volume_id/built-in.o -Wl,--end-group -Wl,--start-group -lm -Wl,--end-group ========== /work/integration/envs/latest/tools/gcc/gcc-linaro-4.9-2014.11-x86_64_aarch64-linux-gnu/bin/../lib/gcc/aarch64-linux-gnu/4.9.3/../../../../aarch64-linux-gnu/bin/ld: cannot find crt1.o: No such file or directory /work/integration/envs/latest/tools/gcc/gcc-linaro-4.9-2014.11-x86_64_aarch64-linux-gnu/bin/../lib/gcc/aarch64-linux-gnu/4.9.3/../../../../aarch64-linux-gnu/bin/ld: cannot find crti.o: No such file or directory collect2: error: ld returned 1 exit status make: *** [busybox_unstripped] Error 1 Thank you! Regards, Kévin -- IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. ARM Limited, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, Registered in England & Wales, Company No: 2557590 ARM Holdings plc, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, Registered in England & Wales, Company No: 2548782

10 years

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[ACTIVITY] Week 14

by Charles Baylis

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

10 years, 1 month

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[ACTIVITY] Week 15

by Charles Baylis

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

10 years, 1 month

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[ACTIVITY] 6 - 10 April 2015

by Omair Javaid

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

10 years, 1 month

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[ACTIVITY] Week 15

by Yvan Roux

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

10 years, 1 month

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[ACTIVITY] 5th - 10th April

by Bernie Ogden

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

10 years, 1 month

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[ACTIVITY] 30th March - 3rd April

by Bernie Ogden

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

10 years, 1 month

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[Weekly] 06-10 APR 2015

by Michael Collison

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

10 years, 1 month

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[ACTIVITY] 6 - 10 April 2015

by Kugan

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

10 years, 1 month

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[ACTIVITY] Week 15

by Prathamesh Kulkarni

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

10 years, 1 month

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[ACTIVITY] 06 April 2015 -- 10 April 2015

by Yao Qi

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

10 years, 1 month

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[ACTIVITY] 7-10 April, 2015

by Christophe Lyon

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

10 years, 1 month

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[ACTIVITY] 30 March - 3 April 2015

by Christophe Lyon

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

10 years, 1 month

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[ACTIVITY] 30 March - 3 April 2015

by Kugan

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

10 years, 1 month

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[ACTIVITY] 30th March -- 03rd April

by Yao Qi

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

10 years, 1 month

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[ACTIVITY] Week 14

by Yvan Roux

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

10 years, 1 month

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[ACTIVITY] 30 March - 3 April 2015

by Omair Javaid

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

10 years, 1 month

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[ACTIVITY] 30th March - 03rd April.

by Venkataramanan Kumar

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

10 years, 1 month

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