== Week of March 31st ==
- Investigated and scripted how to reproducibly run benchmarks (TCWG-238, 7/10)
-- Stop all services on target board
-- Use local disk
-- Stop networking
-- Bind benchmark to a specific CPU. Bind all other processes to a different CPU.
-- Disable frequency scaling.
- Various discussions (3/10)
--
Maxim Kuvyrkov
www.linaro.org
PGO - AArch64 (TCWG-179) (4/10)
* Installed QEMU user static for aarch64 and use them from
chroot environment in ubuntiu 13.10
* Tried installing chroot + qemu arm64-saucy in another ubuntu 12.04
machine. Issue with binfmts. looks to be corrupted.
* Bootstrap GCC with PGO with --enable-languages=c,c++,fortran
completed under arm64-chroot.
* Built GCC and binutils in native mode under chroot + qemu arm64-saucy .
* SPEC runs -O3 -mcpu=cortex-a57 in chroot + qemu arm64-saucy with
linaro release source (4.8).
Calculix did not finish under chroot + qemu arm64-saucy
GLIBC Systemtap (4/10)
* Built systemtap under chroot + qemu arm64-saucy. Built glibc with
the patch and used --enable-systemtap.
* Able to see setjmp probe in gdb, but longjmp probes not loading.
Tried debugging in gdb. gdb debugging support not available yet under
qemu.
* Discussed with Will newton on my observation.
Bug fix (1/10)
* Not much progress continued looking at reload dumps.
Misc (1/10)
* Tested cbuildv2 to build gcc natively under qemu-arm64-chroot-ubuntu-saucy.
cbuildv2 reports configure error for gcc and g++multilibs. But they
are not needed for native builds. Sent note to Rob for fixing it.
* Attend 1-1 with Ryan
* Attend 1-1 with Maxim discuss PGO work.
== Plan ==
PGO runs for SPEC2006 on chroot + qemu arm64-saucy
Upstream /testing for systemtap probes in glibc
Reload bug fix.
Leave: 17-Apr local state election.
== Progress ==
* GDB reverse debugging on aarch64 [6/10] [TCWG-398]
-- Setup development tree and debug environment.
-- Verified generic reverse debugging implementation aarch64.
-- Implemented main function stubs to catch instruction for decoding
and recording.
* Work on gdb testing utility [TCWG-96] [1/10]
-- Some tweaks to scripts and wiki updates.
* Experimented gdb testing/debugging with Aarch64 QEMU + Chroot [3/10]
== Plan ==
* GDB reverse debugging on aarch64 [TCWG-398]
-- Implement main instruction decoding handler and write function
stubs for different types of instructions.
-- Dig deeper into aarch32 for handling it through armv7
implementation if possible.
== Progress ==
TCWG-156 cortex-strings memset (5/10)
* Fixed a couple of bugs in the no-VFP case
* Ran benchmarks, discarded broken benchmarks, ran more benchmarks
* Explored benchmarking scripts
* Took a hard look at the memset tests
* Experimented with ARM-internal cortex-strings benchmark (not useful right now)
Misc
* Meetings (1/10)
* Kicked an A15 target until it worked (1/10)
* 1/2 day holiday
== Plan ==
More TCWG-156
Maxim's glibc starter issue
Holiday Tuesday
Public Holidays Friday & next Monday
1 day off (Child care)
== Issues ==
* Toolchain64 disk full
== Progress ==
* Released Linaro GCC 4.7 and 4.8 2014.04 (5/10)
* Launchpad bugs: (1/10)
o LP #1169164 : including signal.h exposes various PSR_MODE #defines
- rebased and rework patch
* Misc:
o Cbuildv1 baby-sitting (1/10)
o Various meetings (1/10).
== Next ==
- Continue on LP #1169164
- Linaro GCC 4.9 release
== Issue ==
* None
== Progress ==
* 2 day off.
* Investigate lp:1304267 and close it as invalid.
* Investigate shrink-wrap bootstrap issues [4/10, TCWG-133]
- Re-implement the copy propagate part by referring cprop_hardreg pass.
- Other tests are ongoing.
* Document cross-native build on wiki:
https://wiki.linaro.org/WorkingGroups/ToolChain/cross-native
== Plans ==
* Send the shrink-wrap related patches for review.
* PING the pending patches.
== Planed leaves ==
* April 21: Team event.
* May 1-3: Labour day holiday.
== Progress ==
* TCWG-413 Spec2006 (6/10)
- Setup chroot for aarch64
- Created rootfs with 4.8/trunk and spec2006
- booted created rootfs on foundation model with ubuntu kernel
* TCWG-291 CRC (3/10)
- posted vrp patch upstream
- with that seeing expected performance improvement
- analysing crc complete and up-streaming activities pending
* LP1301335 and PR59695 back-porting (1/10)
== Plan ==
Benchmarking and FENV support
Dear Sir,
Thanks for you page. it is really very helpful to us.
We are facing a problem during compiling GCC for our ARMv7-a Cortex-a9.
We are using following option:
1.
../gcc-linaro*/configure --disable-bootstrap --enable-languages=c,c++
--with-mode=thumb --with-arch=armv7-a --with-tune=cortex-a9
--with-float=hard --with-fpu=vpfv3-d16 --prefix=$home/gcc/gcc-linaro
2.
make -j`getconf _NPROCESSORS_ONLN`
after 2 step we are getting following error:
checking whether putc_unlocked is declared... yes
checking whether getrlimit is declared... yes
checking whether setrlimit is declared... yes
checking whether getrusage is declared... yes
checking whether ldgetname is declared... no
checking whether times is declared... yes
checking whether sigaltstack is declared... yes
checking whether madvise is declared... yes
checking for struct tms... yes
checking for clock_t... yes
checking for F_SETLKW... yes
checking if mkdir takes one argument... no
Unknown CPU given in --with-arch=armv7-a.
make[1]: *** [configure-gcc] Error 1
make[1]: Leaving directory `/home/anwej/src/build'
make: *** [all] Error 2
Please suggest the solution. where is the problem and what will be our next
steps.
Thanks in advance.
-best regards
Anwej Alam
Ph: +91.995.833.3456
Hi,
The preprocessed file:
http://people.linaro.org/~rikuvoipio/qmltextgenerator.ii.gz
With compile command line:
g++ -save-temps -c -g -O2 -fstack-protector --param=ssp-buffer-size=4
-Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 -fvisibility=hidden
-fvisibility-inlines-hidden -Wall -W -D_REENTRANT -fPIC -o x.o
qmltextgenerator.ii
Will take apparently forever (north of 1600min) on a debian native gcc. -O
compiles instantly. Some bisecting for gcc optimization flags later,
disabling strict aliasing allows instant build as well:
g++ -save-temps -c -g -O2 -fno-strict-aliasing -fstack-protector
--param=ssp-buffer-size=4 -Wformat -Werror=format-security
-D_FORTIFY_SOURCE=2 -fvisibility=hidden -fvisibility-inlines-hidden -Wall
-W -D_REENTRANT -fPIC -o x.o qmltextgenerator.ii
Happens with:
gcc version 4.8.2 (Debian 4.8.2-19)
and
gcc version 4.9.0 20140405 (experimental) [trunk revision 209146] (Debian
20140405-1)
Linaro binary cross-compilers are compile the file fine with -O2.
do we do native gcc testing, or should it be just submitted upstream
bugzilla?
Riku
