Progress:
* VIRT-65 [QEMU upstream maintainership]
+ QEMU 4.1.0 rc3 sent out. As usual, we've found some last minute
bugs and we'll need an rc4 next week...
+ patch review:
- series from Philippe making some cleanups to use object_initialize_child()
and friends
- Alex's patch "generate a custom MIDR for -cpu max"
- made a start on reviewing RTH's 32-bit arm decodetree conversion
+ bug fixing:
- LP:1838277 : we were taking exceptions caused by BRK instructions at
EL2 to EL1, rather than to EL2; sent a patch fixing this
- LP:1838475 : FPU register stacking in M-profile CPUs without the
Security Extensions was incorrectly failing an NSACR check and
taking a bogus exception: sent a patch to fix
+ wrote a patchset that converts the sparc target away from the
deprecated and broken do_unassigned_access hook to use the new-in-2017
do_transaction_failure hook instead; one step closer to being able
to remove the old hook entirely...
+ did the same for the mips target
thanks
-- PMM
== This Week ==
* PR86753
- Working on approach suggested by Richard.
* PR90724
- Pinged upstream.
* Validation
- Merged patch to jenkins-scripts to add testsuite comparison to tcwg_gnu.
- Submitted patch for separating build and test steps in tcwg_gnu.
== Next Week ==
- Continue ongoing tasks.
== Progress ==
* LLVM 9.0.0 rc1 binaries uploaded
- Ran into one cross-platform issue (x86, AArch64, ARM etc)
- Opened a bug for libfuzzer tests on AArch64
* Use ninja in release job [LLVM-536]
- Done
* Investigate running benchmarks in containers [TCWG-1513]
- Seems to work, except for mcf which errors out; will investigate next week
* IR SVE reviews [LLVM-545]
- Another round of feedback to D53137
== Plan ==
* Review D47770
* Upcoming vacation: 6 - 13 August
* Friday off
== Progress ==
* GCC:
- FDPIC: started taking feedback into account. Changes under test.
- noinit attribute: posted a new version
* GNU-583 (Fix Linux kernel built for Thumb-2 with GCC using LTO)
- no progress this week
* GCC upstream validation:
- no new issue this week.
* Binutils:
- Non-contiguous memory regions support in the BFD linker: not started
yet. Received a few "warnings" as feedback.
* misc:
- infra fixes / troubleshooting
== Next ==
GCC:
- handle feedback on FDPIC and noinit patches
- binutils/linker support for non-contiguous memory regions
- GNU-583
- GCC upstream validation: Add a config for cortex-m33 (v8-m)
== Holidays ==
Aug 2-11 (next week)
[PR42719] BasicAA UnitTest failure on AArch64 when compiled with GCC
- Patch submitted upstream
[PR42853] LLD support for TPREL_G0 relocations
- In theory a simple change, but llvm-mc seems to be deliberately
doing something strange with MOVZ encodings fixMOVZ and I haven't
worked out why it is needed.
Investigations with respect to inline assembler constraints.
- Some patch review comments for my ABE (Linaro GCC build system)
patch for GCC RM multilibs
- LLD review for smaller AArch64 images.
- Wrote a summary of what TCWG do for the upstream community, may turn
into a Linaro blogpost
- Raised GCC PR91299 to cover incorrect weak definition inlining in
GCC LTO in presence of non-weak definition.
On holiday Friday 2nd August, back in the office on Monday.
[VIRT-263 # ARMv8.1-VHE Virtual Host Extensions ]
Merged some fixes from Alex.
Starting to test kvm-inside-tcg.
[VIRT-327 # Richard's upstream QEMU work ]
Posted v1 of aa32 base isa conversion to decodetree.
Reviewed v5 of the sparc64 invert endian tlb bit patches.
r~
[ACTIVITY] On buildbot and Linux kernel CI duty
- One obscure alias analysis bug that only failed on GCC on AArch64
that suddenly started failing a unit test. Tracked down to an
unitialised variable when API called directly via unit-test. Test has
been reverted, but I've put enough information in a PR for an AA
expert to either fix the test or initialise class member pointer to
nullptr.
- A long review of an LLD patch that changes page-alignment rules and
this has impact on the TLS address. Spent way too long trying to
reverse engineer why the formula used would work, needed to find the
corresponding loader code to find the other side.
- Assertion added to LLVM triggered a failure in Linux kernel build,
reproduced example and forwarded on
- Code size investigation Linaro Connect proposal accepted, now have
to write it.
