Current Milestones:
|| || Planned || Estimate || Actual ||
|| clean up kvm-qemu cp i/f || 2012-09-20 || 2012-09-20 || ||
|| fake-trustzone || 2012-10-15 || 2012-10-15 || ||
Also planned: general keeping up with kernel changes; upstream patch
review; qemu-linaro releases. May change dates to align with overall
KVM plan for the quarter when that is finalised.
Previous Milestones:
||cp15-rework || 2012-01-06 || 2012-06-23 || 2012-06-24 ||
||a15-lpae-support || 2012-07-13 || 2012-07-20 || 2012-07-20 ||
== track-kvm-abi-changes ==
* folded in Christoffer's interrupt ABI changes
* updated to new ONE_REG ABI for register accesses
* QEMU now in sync with the kernel patchset Christoffer has just sent to alkml
== other ==
* qemu-linaro 2012.09 released
* various meetings/status calls
KVM blueprint progress tracker:
http://ex.seabright.co.nz/helpers/backlog?group_by=topic&colour_by=state&pr…
Summary
* Workaround the unwind issue for shrink-wrap
* Verify Linaro tickets.
Details:
1. Debugging the failed cases for shrink-wrap. To workaround the
unwind issue, update arm_expand_epilogue to generate return not
simple_return when sp is changed.
2. Setup Linaro toolchain and verify 8 tickets:
*Linaro gcc:
lp:1036170: Function pointer dereferenced twice. It is ARM special bug
which is confirmed in 4.6, 4.7 and FSF trunk only on ARM.
lp:1048709: wrong assembler, out of range vldr instruction. Confirmed
in Linaro 4.6. Can not reproduce it in 4.7 or FSF 4.6.
lp:1014658: It is c++11 related issue in 4.6.
lp:944572: It is a gcc general issue.
lp:972503 and lp:1039401 can not be reproduced.
* Linaro binary toolchain:
lp:1046718: confirmed and fixed it.
lP:1049498: invalid
Plans:
* Prepare Linaro binary toolchain 2012.09 release.
* Performance test for shrink-wrap.
* Follow-up the tickets.
Best regards!
-Zhenqiang
== Progress ==
* Committed patch to fix 3 testcases in big-endian after upstream comments.
* Updated patch to make vext tests support big-endian after upstream comments.
* builtin_bswap16:
* Committed implementation for ARM.
* Investigating testsuite regressions caused by my patch to catch
(x<<8)|(x>>8)
== Next ==
* Continue with bswap16 support.
== Progress ==
* Started looking at
https://bugs.launchpad.net/ubuntu/+source/gcc-4.6/+bug/1029454
* Confirmed the failure
* Unfortunately the git bisect I thought would find the fix didn't
* Hot/Cold partitioning in PGO:
* Some further investigations
* Talked to Uli about one failure - he gave me some further pointers
* Admin
* Some interviewing
== Next Week ==
* Continue looking at 1029454: cselim tree optimizer generates incorrect code
* Start looking at merging the ARM public 4.7 GCC branch into gcc-linaro/4.7
* Hot/Cold Partitioning:
* Investigate remaining silent code-gen faults and non-termination
issue in SPEC
* If failures are fixed start profiledbootstraps and tests on the
central boards.
* symbol_ref splitting
* Test code alignment hypothesis
* Test v2 patch.
== Future ==
* Look at Cards for Vectorization, PGO and LTO with Michael.
--
Matthew Gretton-Dann
Linaro Toolchain Working Group
matthew.gretton-dann(a)linaro.org
== GDB ==
* Created and published Linaro GDB 7.5 release.
== GCC ==
* Posted patch to use vld1.64/vst1.64 instead of vldm/vstm
for mainline inclusion.
* Posted patch to use vld1/vst1 to implement vec_set/vec_extract
with scalar operand residing in memory.
Mit freundlichen Gruessen / Best Regards
Ulrich Weigand
--
Dr. Ulrich Weigand | Phone: +49-7031/16-3727
STSM, GNU compiler and toolchain for Linux on System z and Cell/B.E.
IBM Deutschland Research & Development GmbH
Vorsitzender des Aufsichtsrats: Martin Jetter | Geschäftsführung: Dirk
Wittkopp
Sitz der Gesellschaft: Böblingen | Registergericht: Amtsgericht
Stuttgart, HRB 243294
The Linaro Toolchain Working Group is pleased to announce the release of
Linaro GDB 7.5.
Linaro GDB 7.5 2012.09 is the first release in the 7.5 series.
***NOTE*** Linaro GDB 7.5 2012.09 is identical to the FSF GDB 7.5 release,
except for the change in version number and Linaro branding, since all
Linaro GDB features were already accepted upstream and are included in
the FSF release as-is. Future releases in the Linaro GDB 7.5 series may
include additional ARM-focused bug fixes and enhancements.
The source tarball is available at:
https://launchpad.net/gdb-linaro/+milestone/7.5-2012.09
More information on Linaro GDB is available at:
https://launchpad.net/gdb-linaro
The Linaro Toolchain Working Group is pleased to announce the release of
Linaro QEMU 2012.09.
Linaro QEMU 2012.09 is the latest monthly release of qemu-linaro. Based
off upstream (trunk) QEMU, it includes a number of ARM-focused bug fixes
and enhancements.
There are no major changes in this month's release, but it has
been updated to be based on upstream's recent 1.2.0 release.
The source tarball is available at:
https://launchpad.net/qemu-linaro/+milestone/2012.09
More information on Linaro QEMU is available at:
https://launchpad.net/qemu-linaro
The Linaro Toolchain Working Group is pleased to announce the 2012.09
release of both Linaro GCC 4.7 and Linaro GCC 4.6.
Linaro GCC 4.7 2012.09 is the sixth release in the 4.7 series. Based
off the latest GCC 4.7.1+svn191123 release, it includes ARM-focused
performance improvements and bug fixes.
Interesting changes include:
* Updates to GCC 4.7.1+svn191123
* Adds support for the NEON vext instruction when shuffling
* Backports improvements to scheduling transfers between VFP and core registers
* Backports support for the UBFX instruction on certain bit extract idioms
Fixes:
* PR54252 ICE with too wide alignment assertion on vectorised code
* PR54212 ICE due to generating a predicated NEON vdup instruction
Linaro GCC 4.6 2012.09 is the nineteenth release in the 4.6 series.
Based off the latest GCC 4.6.3+svn191000 release, this is the sixth
release after entering maintenance.
Interesting changes include:
* Updates to 4.6.3+svn191000
The source tarballs are available from:
https://launchpad.net/gcc-linaro/+milestone/4.7-2012.09https://launchpad.net/gcc-linaro/+milestone/4.6-2012.09
Downloads are available from the Linaro GCC page on Launchpad:
https://launchpad.net/gcc-linaro
More information on the features and issues are available from the
release page:
https://launchpad.net/gcc-linaro/4.7/4.7-2012.09
Mailing list: http://lists.linaro.org/mailman/listinfo/linaro-toolchain
Bugs: https://bugs.launchpad.net/gcc-linaro/
Questions? https://ask.linaro.org/
Interested in commercial support? Inquire at support(a)linaro.org
-- Michael
Summary:
* Test shrink-wrap code
Details:
1. Add simple_return support in function thumb2_expand_return for
shrink-wrap. Here is the make check status
* One new fail is due to code size increase. We'd disable it when
optimizing function for size on THUMB2.
* Other new fails is due to dwarf info. Root cause is ICE at function
maybe_record_trace_start
gcc_checking_assert (cfi_row_equal_p (cur_row, ti->beg_row));
Here is the failed code segment:
tst ... L1
push {r4}
...
ldr r4, ...
L1:
bx lr // common simple return from two branches.
Here are the results for cur_row and ti->beg_row of trace starting at L1:
{cfa = {offset = 0, base_offset = 0, reg = 13, indirect = 0, in_use =
0}, cfa_cfi = 0x0, reg_save = 0x0}
{cfa = {offset = 4, base_offset = 0, reg = 13, indirect = 0, in_use =
0}, cfa_cfi = 0x0, reg_save = 0x7ffff726ab70}
Try gcc-linaro-4.5-2011.03. It does not generate the common bx lr.
test L1
push {r4}
...
pop {r4}
bx lr
L1:
bx lr
There is similar bug about it. But the fix is useless for us:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50833
Plans:
* Continue shrink-wrap task.
Best regards!
-Zhenqiang
