LLVM-579 Implement -fix-cortex-a8 in LLD. Keeping up with review
comments, I think this is getting close now.
Connect slides moving forwards. Now have 2 out of 3 presenters done.
Rest of the week taken up by investigations and LLD reviews.
Progress:
* VIRT-65 [QEMU upstream maintainership]
+ implemented and sent patchset for semihosting v2 API
+ target-arm pullreq, patch review, etc
+ got the QEMU Summit invite list finalised and sent invites
+ some internal meetings
thanks
-- PMM
== Progress ==
* Investigate running benchmarks in containers [TCWG-1513]
- Finally merged, after a few more iterations and testing!
- Doesn't work for AArch32 yet but I think I have a fix
* Use newer perf for benchmarking [TCWG-1512]
- Tried 4.15.0-62 generic on the TK1, doesn't seem to work; investigating
* SVE IR fuzzer [LLVM-586]
- Didn't get to work much on it
* Uploaded LLVM 9.0.0-rc4
== Plan ==
* Fix AArch32 benchmarking
* TCWG-1512 and LLVM-586
o LLVM:
* Buildbots babysitting
* Machine Outliner:
- Experiments on Zephyr exposed some issues w/r to unwinding and
relocation overflow, working on these.
o Misc
* Various meetings and discussions.
Hi guys. Due to unfortunate baggage handling, I don't have my laptop and
won't be able to log in Monday. I should be back online Tuesday, all going
well.
r~
Progress:
+ usual upstream maintainership stuff
+ notably, finished review of RTH's decodetree conversion patchset,
got it into master
+ started on implementing semihosting v2 API (the most interesting
new feature of which is support for AArch32 binaries exiting with
a specified exit status)
thanks
-- PMM
== Progress ==
* GCC:
- FDPIC: almost OK. Found minor issues with testcases
* GCC upstream validation:
- reported a couple of issues. Helped with testing.
- getting ready to add cortex-m33 validation with qemu
* Binutils:
- Non-contiguous memory regions support in the BFD linker: not started yet.
* misc:
- infra fixes / troubleshooting / reviews
- a bit of Jira
== Next ==
GCC:
- commit FDPIC patches after final validation
- binutils/linker support for non-contiguous memory regions
- GCC upstream validation: Add a config for cortex-m33 (v8-m)
== Progress ==
* Investigate running benchmarks in containers [TCWG-1513]
- Addressed review comments, merged changes to dockerfiles
- Fixed mcf on AArch64; also managed to run on armv7 but with some failures
* SVE IR fuzzer [LLVM-586]
- Didn't get to work much on it, but rebuilt it with debug info
* Uploaded LLVM 9.0.0-rc3
== Plan ==
* Investigate armv7 failures in docker
* Iterate on benchmarking patches
* Figure out why the fuzzer almost never introduces new code
* 2 vacation days left this month
[VIRT-327 # Richard's upstream QEMU work ]
Fix two ppc fp launchpad bugs.
Resurect patches for openrisc v1.3
Once-over review of risc-v vector extension.
Posted v3 of a32 coversion to decodetree.
Started poking at neon conversion to decodetree,
as a prerequisite to a32 support for fp16.
Some cleanups to watchpoints. Generic stuff now queued to tcg-next.
DavidH is taking care of target/s390x updates, but there are some
changes wanted within target/arm SVE code.
r~
== Progress ==
* GCC:
- FDPIC: sent updated patches, already got feedback on them. almost OK
* GCC upstream validation:
- reported a couple of issues. Helped with testing.
- getting ready to add cortex-m33 validation with qemu
* Binutils:
- Non-contiguous memory regions support in the BFD linker: not started yet.
* misc:
- infra fixes / troubleshooting / reviews
- a bit of Jira
== Next ==
GCC:
- handle feedback on FDPIC patches
- binutils/linker support for non-contiguous memory regions
- GNU-583
- GCC upstream validation: Add a config for cortex-m33 (v8-m)
== This Week ==
* GCC:
(i) PR86753 - Addressing upstream suggestions, pivoted to another approach.
(ii) PR91272 - Patch fixes issue but not correct approach, need to rework it.
(iii) PR78736 - Submitted patch upstream.
== Next Week ==
- Continue ongoing tasks.
== Progress ==
* Investigate running benchmarks in containers [TCWG-1513]
- Cleaned and uploaded scripts for comments
- mcf still hangs, but only when run with clang; investigating root cause
* SVE IR fuzzer [LLVM-586]
- Made some progress with the prototype but it still needs work
* Re-running 8.0.1 release on AArch64 since the archive on
llvm.org/releases seems to be broken
[VIRT-263 # ARMv8.1-VHE Virtual Host Extensions ]
Reorg ARMMMUIdx again; this time, do not overlap
EL1&0 and EL2&0 mmu_idx. This makes debugging a
bit easier.
Fix one more bug in EL2&0 selection. This was not
the last, because a nested kernel does not yet boot.
[VIRT-327 # Richard's upstream QEMU work ]
Another round of aa32 decodetree patches.
Another round of arm hflags patches.
Review of and some patches for cpu watchpoints.
r~
Progress:
* VIRT-65 [QEMU upstream maintainership]
+ sent fix for LP:1840922 (incorrect handling of branches to
M-profile exception-return magic addresses in linux-user mode)
+ some more work on requirements for JIRA KVM related issues
+ started reviewing RTH's monster decodetree conversion patchset
(and made it nearly halfway through it)
thanks
-- PMM
== Progress ==
* GCC:
- FDPIC: handling feedback.
* GCC upstream validation:
- no issue to report this week.
* Binutils:
- Non-contiguous memory regions support in the BFD linker: not started yet.
* misc:
- infra fixes / troubleshooting
- qemu-4.1 confirmed OK for GCC validations
- trying validations for cortex-m33, found a few issues in GCC and a
small one in QEMU
- a bit of Jira
== Next ==
GCC:
- handle feedback on FDPIC patches
- binutils/linker support for non-contiguous memory regions
- GNU-583
- GCC upstream validation: Add a config for cortex-m33 (v8-m)
- Reorganised buildbots to remove some of the duplication between v7
and v8 AArch32 to free up more v7 hardware.
- Got final code-size information and wrote my slides for Linaro Connect
- Track down an AArch64 specific LLD problem due to a recent change,
now resolved.
- Wrote worst case thunk/veneer convergence patch to help move through
an iterative symbol assignment algorithm.
UK Bank Holiday Monday
== This Week ==
* GCC :
(i) PR83756: Addressing feedback from upstream.
(ii) PR90724: Committed to trunk.
(iii) PR91272: Started working on patch.
(iv) PR88839: Merged fix from sve-acle-branch to trunk.
* Validation
(i) Patch to separate build and test steps in tcwg_gnu.
(ii) SVE validation
== Next Week ==
- Continue ongoing tasks
== Progress ==
* Investigate running benchmarks in containers [TCWG-1513]
- Discussed the noise levels with the team and we decided to
continue with this
- mcf hangs, need to investigate the cause
- WIP: cleaning up the scripts so I can send a sensible patch for review
* IR SVE reviews [LLVM-545]
- Looked at some patches but didn't have much to add to what other people said
* SVE IR fuzzer [LLVM-586]
- Started prototyping
- The fuzzer relies a lot on inserting constants, and since we can't
produce SVE constants yet I'll have to dig in and get it to also use
function parameters
- Need to add operation descriptions for SVE
* Buildbot babysitting
- Reported an issue
