Progress
- Long range thunks
Committed a couple of refactorings on .ARM.exidf and SHF_LINK_ORDER
support. With luck final patch for SHF_LINK_ORDER will be approved
next week
Submitted patches to convert existing Thunk Implementation to use
InputSectionDescriptions. Hopefully these ones are broken down into
small enough parts for upstream to look at.
- Tracked down https://bugs.llvm.org/show_bug.cgi?id=33136 libc++
failing ~100 tests with std::bad_cast exception when built in release
mode. Was down to global-merge incorrectly merging globals that were
not DSO local. Looks to have been fixed quickly
- llvm-mc
Helped out with D33436 review on how to do interworking branches in assembler
D33492 accepted, will commit next week.
Plans:
- Long range thunks
Continue with slow progress towards upstreaming
- Investigate compiler-rt
== Progress ==
o Linaro GCC/Validation (7/10)
* Deployed 7.1 release candidate
* Catching up with re-association development
* Preparing switch to abe/tested branch
o Misc (3/10)
* Various meetings and discussions.
== Plan ==
o release 7.1 2017.05
o Continue on re-association
== Progress ==
* [GlobalISel] AArch64 test-suite and self-host [TCWG-1074] [3/10]
- Reported and investigated a codegen issue introduced by one of
Quentin's patches, which was appearing while selfhosting with GlobalISel
- Ran the test-suite and self-host again after it was fixed
* [ARM GlobalISel] Add support for struct / array args [TCWG-1033] [3/10]
- Committed the lowering part upstream
- Still needs support in the rest of the pipeline but that will be a
different issue
* [Helper scripts] Add "push" capability [TCWG-1141] [1/10]
- Started writing tests
* Misc [3/10]
- Meetings, mailing lists, babysitting the buildbots
- [GlobalISel] Run precommit for Daniel's patch [TCWG-1142]: did another
run for this
- LLVM 4.0.1 [TCWG-1136]: ran rc2 on ARM and AArch64
== Plan ==
* [ARM GlobalISel] Fix arm-irtranslator test [TCWG-1146]
* Replace D01s by Scaleway boards [TCWG-836]
* More GlobalISel stuff
== Progress ==
* Infrastructure:
- improvements in binutils Jenkins jobs, to track regressions rather
than always report 'failed'. Pass ratio can still be very low in some
configs (eg arm-pe)
* Benchmarking:
- work around problems with many simultaneous ssh connexions for
remote cross-compilation
* GCC:
- benchmarked old 'deprecated IT-blocks' patch.
- reported a few regressions in trunk
- looking at testsuite-isms: problems with some multilibs after
dejagnu upgrade (where multilib flags are now prepended, rather than
appended previously)
* misc (conf-calls, meetings, emails, ....)
== Next ==
* Short week (off Monday)
* Benchmarking scripts
* GCC
Progress
- Long range thunks
Made some more progress on the refactoring needed to merge the
representations for the script and non-script cases. Close to getting
the .ARM.exidx sections converted.
- Some thoughts on https://reviews.llvm.org/D33436 to do with
ARM/Thumb interworking in the assembler.
-- Discovered that gold and lld get the case of a relocation to a
Thumb non STT_FUNC symbol with bit 0 clear wrong. Both linkers attempt
to interwork (they shouldn't as the symbol is not STT_FUNC) but
identify the symbol as ARM due to bit 0 being clear. Luckily these are
corner cases only brought up by hand-written assembler.
- Investigation into https://bugs.llvm.org/show_bug.cgi?id=33136
libc++ failing ~100 tests with std::bad_cast exception when built in
release mode (clean upstream build uses debug).
-- Reduced failing test to std::cout << std::endl; the std::bad_cast
comes from an out of range index into a vector of available locales.
-- Current thought is that this could be a codegen bug as I can only
reproduce in Release (-O3) and not RelWithDebInfo (-O2).
Plans for next week:
- Long range thunks
Make more progress on refactoring. Should get .ARM.exidx patches
upstream, next step to convert long range thunks themselves.
- Work on diagnosing PR33136.
* Two days off (4/10)
== Progress ==
o Linaro GCC/Validation (5/10)
* Deployed 6.3 and 5,4 2017.05 releases (source and binaries)
* Updated components for 7.1 2017.05 release candidate
* Finishing release notes before deployment
o Misc (1/10)
* Various meetings and discussions.
== Plan ==
o Deploy 7.1-rc1 and prepare release
o Upstream monitoring reporting
o Back on compiler development
== This Week ==
* TCWG-1005 (4/10)
- Reworking the patch with suggested improvements
* PR80806 (1/10)
- Rejected patch, based on discussions with Martin and Jeff
- Submitted patch to remove dead call to memset in value-prof.c
* type promotion (2/10)
- Discussions with Kugan
- Trying out different test-cases and going through the patch/ML discussions
* TCWG-1129 (1/10)
- Understanding EH in gcc
* Validation (1/10)
- Cross compiling boost for ARM
* Misc (1/10)
- Meetings
- Pinged patch for PR78736.
== Next Week ==
- GCC: TCWG-1005, type promotion, TCWG-1129, bugs
- Validation: Add Boost to tcwg-buildapp
# Progress #
* GDB 8.0 release. TCWG-1050, [1/10]
Blocked by one MingW build issue. Should be the last one.
* gdb and objdump disassembler unification. [3/10]
Patches are approved. Rebase them, re-test them, and push them in.
Clean up some leftovers.
* GDB target description changes. [5/10]
Finish the design in GDBserver. Finish the prototype of both GDB and
GDBserver. Re-org them to some extent.
* GDB crossbuild w/ docker. [1/0]
Inspired by QEMU build, take a look docker and think about how to use
docker to build/test GDB for different targets.
# Plan #
* Holiday, and back to office on 6th June.
* Post RFC v2 on GDB target description changes.
* Upstream the patches of clean up to gdb and objdump disassembler
unification.
--
Yao Qi
