Ensure all critical (benchmarking) data is logged - TCWG-349 [1/10]
* Added logging of several factors
* Documented what we do and don't log
Noise control experiments on Juno - TCWG-349 [4/10]
* Rediscovered that my Juno is an r0, not an r1
* Rebuilt target image in a carefully scripted way
* Fiddled about with differences between local and LAVA targets
* Ran a couple of trials to test infrastructure
Connect preparation - [2/10]
* General sorting out of tickets et al
* Final pass through benchmarking presentation
Misc - [3/10]
=Plan=
Merge 'logging' branch
Final pass through logging documentation
Run some noise experiments on Juno
If time, work on Jenkins benchmarking jobs
== Progress ==
LLDB development
-- Progress to add support for un-alinged watchpoints on AArch64
[TCWG-367] [5/10]
-- Truncating watched bits wasnt accepted as a solution, will look
into issues during connect.
-- Trying to figure out a way to use multiple watchpoint slots for a
single watchpoint.
Miscellaneous [1/10]
-- Meetings, emails, discussions etc.
-- Travel preparations
Holiday 10 - 11 September 2015 - Travelling to US
== Plan ==
Holiday 14 - 18 September 2015
Connect 21 - 25 September 2015
Holiday 28 September - 5th October 2015
Hi,
I've tried probably a dozen different ABE build command lines with various combinations of cpu/arch/tune on the latest tree and on the 2014.09 release and am unable to build for the armv6/1136J-S.
Before bothering the list, I scoured the gzipped archive back through 2013, and there is little mention of any problems OR successes with armv6. I am wondering if armv6 is supported, and if so, what is the secret sauce ABE command line to build successfully for the 1136J-S.
Some of the builds I tried were missing tarball components, others fail later on such as the one below that gets through building gcc and bombs building the eabi.
--------------------
'abe.sh -target arm-linux-gnueabi -build all -set cpu=arm1136j-s' produces the following, see further below for the gcc version data:
arm-linux-gnueabi-gcc ../sysdeps/arm/aeabi_memclr.c -c -std=gnu99
-fgnu89-inline -O2 -Wall -Werror -Winline -Wno-error=undef -Wundef
-Wwrite-strings -fmerge-all-constants -frounding-math -g
-Wstrict-prototypes -I../include
-I/home/billd/_build/builds/x86_64-unknown-linux-gnu/arm-linux-gnueabi/glibc.git~release-2.21-master/csu
-I/home/billd/_build/builds/x86_64-unknown-linux-gnu/arm-linux-gnueabi/glibc.git~release-2.21-master
-I../sysdeps/unix/sysv/linux/arm -I../sysdeps/arm/nptl
-I../sysdeps/unix/sysv/linux/include -I../sysdeps/unix/sysv/linux
-I../sysdeps/nptl -I../sysdeps/pthread -I../sysdeps/gnu
-I../sysdeps/unix/inet -I../sysdeps/unix/sysv -I../sysdeps/unix/arm
-I../sysdeps/unix -I../sysdeps/posix -I../sysdeps/arm/armv6
-I../sysdeps/arm/include -I../sysdeps/arm -I../sysdeps/wordsize-32
-I../sysdeps/ieee754/flt-32 -I../sysdeps/ieee754/dbl-64
-I../sysdeps/ieee754 -I../sysdeps/generic -I.. -I../libio -I. -nostdinc
-isystem
/home/billd/_build/builds/destdir/x86_64-unknown-linux-gnu/lib/gcc/arm-linux-gnueabi/5.1.1/include
-isystem
/home/billd/_build/builds/destdir/x86_64-unknown-linux-gnu/lib/gcc/arm-linux-gnueabi/5.1.1/include-fixed
-isystem /home/billd/_build/sysroots/arm-linux-gnueabi/usr/include
-D_LIBC_REENTRANT -include
/home/billd/_build/builds/x86_64-unknown-linux-gnu/arm-linux-gnueabi/glibc.git~release-2.21-master/libc-modules.h
-DMODULE_NAME=libc -include ../include/libc-symbols.h -o
/home/billd/_build/builds/x86_64-unknown-linux-gnu/arm-linux-gnueabi/glibc.git~release-2.21-master/csu/aeabi_memclr.o
-MD -MP -MF
/home/billd/_build/builds/x86_64-unknown-linux-gnu/arm-linux-gnueabi/glibc.git~release-2.21-master/csu/aeabi_memclr.o.dt
-MT
/home/billd/_build/builds/x86_64-unknown-linux-gnu/arm-linux-gnueabi/glibc.git~release-2.21-master/csu/aeabi_memclr.o
/tmp/ccTT8UgL.s: Assembler messages:
/tmp/ccTT8UgL.s:492: Error: lo register required -- `add
pc,r3,#(0xffff0fc0-0xffff0fff)'
/tmp/ccTT8UgL.s:490: Error: invalid immediate: -61441 is out of range
make[2]: ***
[/home/billd/_build/builds/x86_64-unknown-linux-gnu/arm-linux-gnueabi/glibc.git~release-2.21-master/csu/libc-start.o]
Error 1
--- here is the gcc -v output for the build above. ----
./arm-linux-gnueabi-gcc -v
Using built-in specs.
COLLECT_GCC=./arm-linux-gnueabi-gcc
COLLECT_LTO_WRAPPER=/home/billd/_build/builds/destdir/x86_64-unknown-linux-gnu/libexec/gcc/arm-linux-gnueabi/5.1.1/lto-wrapper
Target: arm-linux-gnueabi
Configured with:
'/home/billd/_build/snapshots/gcc.git~linaro-gcc-5-branch/configure'
SHELL=/bin/bash --with-bugurl=https://bugs.linaro.org
--with-mpc=/home/billd/_build/builds/destdir/x86_64-unknown-linux-gnu
--with-mpfr=/home/billd/_build/builds/destdir/x86_64-unknown-linux-gnu
--with-gmp=/home/billd/_build/builds/destdir/x86_64-unknown-linux-gnu
--with-gnu-as --with-gnu-ld --disable-libstdcxx-pch --disable-libmudflap
--with-cpu=arm1136j-s --with-cloog=no --with-ppl=no --with-isl=no
--disable-nls --enable-c99 --with-fpu=vfpv3-d16 --with-float=softfp
--with-mode=thumb --disable-multilib --enable-multiarch --disable-libssp
--disable-libquadmath --disable-threads --without-headers --with-newlib
--disable-libmudflap --disable-bootstrap --disable-decimal-float
--disable-libgomp --disable-libatomic --disable-libsanitizer
--disable-plugins --disable-libitm MAKEINFO=echo --enable-languages=c
--with-sysroot=/home/billd/_build/builds/sysroot-arm-linux-gnueabi
--disable-shared --with-glibc-version=2.18
--build=x86_64-unknown-linux-gnu --host=x86_64-unknown-linux-gnu
--target=arm-linux-gnueabi
--prefix=/home/billd/_build/builds/destdir/x86_64-unknown-linux-gnu
Thread model: single
gcc version 5.1.1 20150608 (Linaro GCC 5.1-2015.06-1~dev)
== Progress ==
o Linaro GCC validation (8/10)
* Finished on-going backports validation
* Still dealing with jenkins/infra instability
* Prepared branch merge
* Continue on my new reviewing/validation tool
o Misc (2/10)
* Various meetings
* AArch64 libunwind patch review
== Plan ==
o Finish branch merge
o GCC snapshot
o Travel to SFO'15
== This week ==
* TCWG-316 -Exploit vector multiply by scalar instructions when multiple
scalars are used as
coefficients in a loop (5/10)
- Wrote patterns to allow combine pass to mergenon-standard multiply
by lane patterns.
* Bugzilla 57195 (mode iterator bug) blocked compiling new pattern (1/10)
- Updated patch based on upstream comments and re-sent upstream
* TCWG-77 - Transform end of loop conditions to min_expr (1/10)
- Writing dejagnu test case.
- Writing function to check for min expr support on target
* Misc (1/10)
- Conference calls
* Holiday (2/10)
== Next week ==
- Complete TCWG-77 and send upstream
- Continued investigation into TCWG-316
== This week ==
* TCWG-80 (1/10)
- PRE and dead-store elimination ipa pass (WIP upstream) already
handles optimization
* TCWG-120 (2/10)
- Investigating 3 possible approaches:
a) fold arm_andsi3_insn/arm_cmpsi_insn to
zeroextractsi_compare0_scratch/andsi3_compare0_scratch
b) Undo cse in test conditions, and modify arm_rtx_costs to fold
arm_andsi3_insn/arm_cmpsi_insn to
zeroextractsi_compare0_scratch/andsi3_compare0_scratch
c) Expand directly to zeroextractsi_compare0_scratch/andsi3_compare0_scratch
- Not sure whether the generated assembly is better (in terms of
speed) than with trunk.
asm diff at -O1: http://pastebin.com/yXBHHkhM
* TCWG-72 (2/10)
- Rebased Kugan's patch
* TCWG-299 (3/10)
- Simple workaround for PR65837 - configure gcc with --with-fpu=neon
- Firefox trunk doesn't build with gcc for arm, using apt-get source firefox
- LTO build fails with out-of-memory on my laptop in qemu-arm chroot
* TCWG-319 (1/10)
- Benchmarking setup with Bernie on Juno for running SPEC.
- SPEC Runs without error on Juno-{a53,a57} and APM
* Misc (1/10)
- Meetings
== Next Week ==
- Continue with TCWG-120, TCWG-72, TCWG-319
Hi!
The pre-built version of the stable version of Linaro Toolchain (Linaro
GDB 2015.02-3) for Windows is shipped with GDB 7.8-2014.09-1-git. GDB
was built with the following options:
(gdb) show configuration
This GDB was configured as follows:
configure --host=i686-w64-mingw32 --target=arm-linux-gnueabihf
--with-auto-load-dir=$debugdir:$datadir/auto-load
--with-auto-load-safe-path=$debugdir:$datadir/auto-load
--without-expat
--with-gdb-datadir=/home/buildslave/workspace/BinaryRelease/label/hetzner/target/arm-linux-gnueabihf/_build/builds/destdir/i686-w64-mingw32/share/gdb
(relocatable)
--with-jit-reader-dir=/home/buildslave/workspace/BinaryRelease/label/hetzner/target/arm-linux-gnueabihf/_build/builds/destdir/i686-w64-mingw32/lib/gdb
(relocatable)
--without-libunwind-ia64
--without-lzma
--without-guile
--with-separate-debug-dir=/home/buildslave/workspace/BinaryRelease/label/hetzner/target/arm-linux-gnueabihf/_build/builds/destdir/i686-w64-mingw32/lib/debug
(relocatable)
--without-zlib
--without-babeltrace
As you can see in the output GDB was built without expat support. This
is a major problem for widely used micro controllers like ARM Cortex A8
(e.g. used in Beaglebone Black), because the technical description of
this microcontroller is loaded out of xml files (arm-with-neon.xml part
of GDB). It's also possible to do that manually with "set tdesc filename
<xml-file>, before connecting to the target.
Without having the expat option enabled the g package, which is sent
from gdbserver during establishing a connection to gdb, can't be parsed
correctly. The result is in the first step a warning because of the
missing xml support and later on a error regarding the unexpected
content of the g package:
warning: Can not parse XML target description; XML support was disabled
at compile time
Remote 'g' packet reply is too long:
00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000f0fcffbe00000000407afdb6300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
Old GDB versions of Linaro Toolchain like 7.6.1-2013.10 doesn't have
that problem because they were compiled with enabled expat support.
In my opinion there can be two root causes regarding that missing expat
support:
a) Expat support was explicitly disabled with --without-expat option
during the built of GDB.
b) On the build machine there wasn't a expat library available when gdb
was built.
Best regards,
Andreas Schmidl
== Progress ==
* Libraries (1/10)
- Working on getting the libc++ tests green
* Maintenance (6/10)
- Working with Vinicius on the gnueabi memcpy issue
- More TargetTuple/TargetParser discussions
- More sanitizers discussions, patch reviews
* Background (3/10)
- Code review, meetings, discussions, general support, etc.
- Connect stuff
== Plan ==
* Look a bit more on the library issues, try to upstream the bot changes
* Check instability in SciMark2
* Change HD from a D01
* Continue discussion about the sanitizer's multiple VMA problem
* Prepare for Connect, travel arrangements, etc.
# Progress #
* TCWG-857, [7/10]
One patch is upstreamed. The rest of them are in the queue.
Upgrade juno board linux kernel to 4.2.0-rc4+ to test some
multi-arch kernel patches. It isn't easy to run that new kernel
on juno board, takes much time on this.
* Misc [3/10]. Meetings, online trainings, etc.
# Plan #
* Continue to upstream multi-arch patches.
* Some upstream patch reviews on tracepoint.
--
Yao
