[LLVM-486] Error id user defines _GLOBAL_OFFSET_TABLE_ (upstream review)
[LLVM-484] Fix linker script dynamic relocations combination into a single
output section (upstream review)
[LLVM-483] cortex-a53 erratum fix interaction with TLS relaxation (upstream
review)
[LLVM-489] Measure (cross) linking performance of LLD for AArch64 and Arm.
Looking for large projects that I can build for Arm and AArch64
- Firefox seems to have some ARM Android cross build support but it does
not appear to be working too well.
- Chrome can cross build to ARM and AArch64 Android. Have been able to
build AArch64 so far.
Notably both projects don't support building natively on AArch64, there are
quite a few build dependencies for which only x86 support is available.
Raised Jira tickets for recent PRs fixed
2019 Planning
- Drafted objectives document for LLVM team
- Drafted some Jira suggestions for TCWG
QEMU Tooling ([VIRT-252])
=========================
[VIRT-252] https://projects.linaro.org/browse/VIRT-252
QEMU plugin support ([VIRT-280])
- continued reviewing Emilio's {RFC 00/48} Plugin support Message-Id:
<20181025172057.20414-1-cota(a)braap.org>
- port my example tools to his framework :todo
[VIRT-280] https://projects.linaro.org/browse/VIRT-280
Upstream Work ([VIRT-109])
==========================
- finished reviewing {RFC PATCH v2 00/23} KVM: arm64: Initial support
for SVE guests Message-Id:
<1538141967-15375-1-git-send-email-Dave.Martin(a)arm.com>
[VIRT-109] https://projects.linaro.org/browse/VIRT-109
Other Tasks
===========
- started The QEMU initiative thread Message-Id:
<87wop4gezg.fsf(a)linaro.org> for JIRA discussion
Completed Reviews [3/3]
=======================
{RFC PATCH v2 00/23} KVM: arm64: Initial support for SVE guests
Message-Id: <1538141967-15375-1-git-send-email-Dave.Martin(a)arm.com>
- CLOSING NOTE [2018-11-22 Thu 15:36]
My only major concern is if the query API is too gold plated.
{RFC PATCH 0/2} docker: Add gentoo-mipsr5900el-cross image
Message-Id: <20181118203312.5376-1-f4bug(a)amsat.org>
{PATCH} docker: dockerfile for openSUSE Leap
Message-Id: <87k1lai2vo.fsf(a)linaro.org>
Absences
========
- Christmas Holidays
- Connect BKK19 (1-5th April 2019)
Current Review Queue
====================
* {RFC 00/48} Plugin support
Message-Id: <20181025172057.20414-1-cota(a)braap.org>
* {Qemu-devel} {PATCH for-4.0 v2 00/37} tcg: Assorted cleanups
Message-Id: <20181123144558.5048-1-richard.henderson(a)linaro.org>
* {Qemu-arm} {PATCH v5 00/16} gdbstub: support for the multiprocess extension
Message-Id: <20181110081147.4027-1-luc.michel(a)greensocs.com>
* {Qemu-arm} {PATCH 00/13} Support disabling TCG on ARM
Message-Id: <20181113165247.4806-1-sameo(a)linux.intel.com>
* {PATCH 0/7} Acceptance Tests: basic architecture support
Message-Id: <20181004151429.7232-1-crosa(a)redhat.com>
* {PATCH v7 00/19} Fixing record/replay and adding reverse debugging
Message-Id: <20181010133333.24538.53169.stgit@pasha-VirtualBox>
--
Alex Bennée
Progress:
* VIRT-65 [QEMU upstream maintainership]
- release work
- code review
- sent patch fixing Coverity issue in Xen PCI device passthrough
(this was our last outstanding issue with no patch on the list!)
* VIRT-268 [QEMU support for dual-core Cortex-M Musca board]
- some initial investigation of what changes are going to be needed
for heterogenous-cpu support in QEMU
- started on a test case using the existing xnlx-zcu102 board (which
has a heterogenous config that works only by accident)
thanks
-- PMM
== Progress ==
# Monday off
# [LLVM-479] Check current status of GlobalISel
- Looked into new patterns that can be selected by TableGen and
forked LLVM-481 and LLVM-482 out of that
- Ran a test-suite and a selfhost with GlobalISel and had a look at
the fallbacks
# [LLVM-481] [ARM GlobalISel] Test BFC
- Committed upstream
# [LLVM-482] [ARM GlobalISel] Enable CLZ
- Most of the work is done, ready to commit next week
== Plan ==
Wrap up LLVM-482 and LLVM-479
Fork more stories out of LLVM-479
The Linaro Toolchain Working Group (TCWG) is pleased to announce the
2018.11 snapshot of Linaro GCC 6 source package.
o This Linaro GCC 6 snapshot[1] is based on FSF GCC 6.5+svn265890 and
includes performance improvements and bug fixes backported from
mainline GCC. This snapshot will be part of the final maintenance release,
as the upstream GCC 6 branch is at the end of its maintenance lifespan.
This snapshot tarball is available on:
http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.5-2018.11/
Interesting changes in this GCC source package snapshot include:
* Updates to GCC 6.4+svn265890
o 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]. Source package snapshots are defined when the compiler is only
put through unit-testing and full validation is not performed.
Mark Murray Staff Software Engineer | Arm
. . . . . . . . . . . . . . . . . . . . . . . . . . .
p: +44 1223 405082
arm.com <http://www.arm.com>
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.
o 4 days week.
o LLVM
* 7.0.1-rc2:
- Uploaded ARM and AArch64 binaries
- Investigating miscompare on AArch64
* Machine Outliner on ARM prototype:
- IR Outliner experiment gave interesting code size reduction
o Misc
* Various meetings and discussions.
* CI patch reviews
Three day week.
[GNU-180 # Fix gcov crash on program exit]
Fiddled around with TI-RTOS for a while before I realized that was sort of
beside the point. Gave the reporter a method do avoid dumping during the
global destructors. Still need to look into where the reported stack space
problem might be.
[Upstream]
Out-of-line softmmu patches got some work. Added ppc64 support. Fixed a race
and a code removal crash. Emilio verified -5% aa64 boot+shutdown time, but it
performed less well on spec2006.
Reviewed risc-v host patch set.
r~
QEMU Tooling ([VIRT-252])
=========================
QEMU plugin support ([VIRT-280])
- started reviewing Emilio's {RFC 00/48} Plugin support Message-Id:
<20181025172057.20414-1-cota(a)braap.org>
- port my example tools to his framework :todo
[VIRT-280] https://projects.linaro.org/browse/VIRT-280
Upstream Work ([VIRT-109])
==========================
- started looking at {RFC PATCH v2 00/23} KVM: arm64: Initial support
for SVE guests Message-Id:
<1538141967-15375-1-git-send-email-Dave.Martin(a)arm.com>
[VIRT-109] https://projects.linaro.org/browse/VIRT-109
Other Tasks
===========
- [Video for KVM Forum QEMU status report] is up
- the rest of the [sessions are here]
- posted {PULL for 3.1 0/2} Testing tweaks Message-Id:
<20181114131008.27599-1-alex.bennee(a)linaro.org>
[Video for KVM Forum QEMU status report]
https://www.youtube.com/watch?v=GZBd3jt5iA8
[sessions are here]
https://www.youtube.com/channel/UCRCSQmAOh7yzgheq-emy1xA/videos
Completed Reviews [3/3]
=======================
{PATCH} tests/tcg/multiarch: fix 32bit linux-test on 64bit host
Message-Id: <20181113175437.26492-1-laurent(a)vivier.eu>
{Qemu-devel} {PATCH} hax: Support for Linux hosts
Message-Id: <20181114130428.32326-1-asanchez(a)kryptoslogic.com>
{Qemu-devel} {PATCH} target: hax: replace g_malloc with g_malloc0
Message-Id: <1542261954-4060-1-git-send-email-liq3ea(a)gmail.com>
Absences
========
- Christmas Holidays
- Connect BKK19 (1-5th April 2019)
Current Review Queue
====================
* {RFC PATCH v2 00/23} KVM: arm64: Initial support for SVE guests
Message-Id: <1538141967-15375-1-git-send-email-Dave.Martin(a)arm.com>
* {Qemu-arm} {PATCH v5 0/4} target/arm: KVM vs ARMISARegisters
Message-Id: <20181113180154.17903-1-richard.henderson(a)linaro.org>
* {Qemu-devel} {PATCH for-4.0 00/17} tcg: Move softmmu out-of-line
Message-Id: <20181112214503.22941-1-richard.henderson(a)linaro.org>
* {Qemu-arm} {PATCH 00/13} Support disabling TCG on ARM
Message-Id: <20181113165247.4806-1-sameo(a)linux.intel.com>
* {Qemu-devel} {PATCH for-4.0 00/17} tcg: Move softmmu out-of-line
Message-Id: <20181112214503.22941-1-richard.henderson(a)linaro.org>
* {Qemu-arm} {PATCH v5 00/16} gdbstub: support for the multiprocess extension
Message-Id: <20181110081147.4027-1-luc.michel(a)greensocs.com>
--
Alex Bennée
LLD bug fixing and triage
pr39678 Calculation of DT_PLTRELSZ with strange linker script.
pr39662 Request to add more emulations
pr39634 LTO and references from inline symbols
D54474 Fix for incorrect relocation span out of ifunc review
D54624 Redefinition of _GLOBAL_OFFSET_TABLE_
=== Work done during the past 2 weeks ===
* Resurrect code size optimization for fmul/dmul from Tony Wang: bootstraping
+ rework slightly to better deal with switch of section and deal with
several possible section layout
+ start anew with a new approach based on symbol visibility
-> works without -gc-sections and does not rely on section layout
* Fix -mslow-flash-data: ready to upstream on Monday
+ some more cleanup and code improvement
* LLVM-432 (Support arithmetic on FileCheck regex variable):
+ started reworking parsing code to be separate from evaluation and support
more complex expression
* Infrastructure code review
=== Plan for week 47 ===
* LLVM-432 (Support arithmetic on FileCheck regex variable):
+ extend testcase coverage (add tests for latest syntax change and
add more negative testing)
+ finish cleaning up the code
* Try to reproduce perf issue mentioned in week #30's weekly report on
latest perf
* Line management.
