Hi All,
There will be lab downtime in the month of November, and rather than
jeopardize the November quarterly binary toolchain release we've decided to
take some steps to ensure that it takes place on time.
The November binary toolchain quarterly release will contain some ARM64
erratum fixes. These are already in the Linaro GCC 4.9 2014.10 source
package release.
The November binary toolchain quarterly release will contain these fixes,
and will be delivered as planned, but will be based on the Linaro GCC 4.9
2014.10 package. We will not have a November Linaro GCC 4.9 2014.11 source
package release.
The December release will be the next Linaro GCC 4.9 source package release.
--
Ryan S. Arnold
Linaro Toolchain Working Group - Engineering Manager
www.linaro.org
cbuild2 benchmarking - TCWG-360 [2/10]
* Figured out how to cook my own OE images
* Started remembering how to build spec
libm exercising - CARD-1693 [2/10]
* Borrowed a usable Juno
* Found that lapack tests segfault on AArch64
* Ran linpack hpl, didn't observe it exercising libm much
** Haven't ruled out Bernie-error yet, though
Upstream - CARD-341 [1/10]
* Respun lowlevellock.h comments
Meetings/mail/etc [5/10]
* A lot of time (>3/10) in performance review and other annual ARM admin
* Some back and forth about difficulties of userspace access to ID registers
=Plan=
Get spec2006 working via my scripts
Find a good HPL libm exerciser
Spend a lot less time on ARM admin
== Progress ==
Further progress on GDB Tracepoints/Fast Tracepoints support on arm
[TCWG-480] [6/10]
-- Debugging and trying out some code enabling tracepoints in gdbserver
-- Research on past tracepoint patches and x86 vs arm architecture comparison
ARM/AArch64 GDB testsuite failures investigation [2/10]
Miscellaneous [2/10]
-- Meetings, Emails etc
-- Fix SSH configurations
-- Patch Scrolling
-- Hong Kong visa process
-- Multiple Dr visits due to continued sickness
== Plan ==
Further progress on GDB Tracepoints/Fast Tracepoints support on arm [TCWG-480]
Fix internet latency issues from lab hardware.
= Progress ==
* Short week was in vacation (22-24 October)
* Updated perf profile numbers for instruction count and documented my
analysis for Linaro compiler's O3 + LTO comparison on Aarch64 vs X86_64
(TCWG-544) (2/10)
* Misc [2/10]
emails, AMD meetings and 1-1 with inline manger.
1-1 with christophe.
== Plan ==
* Coremark benchmark and profiling.
Investigate trunk degradation for O3+ PGO + LTO and report.
== Progress ==
* Zero/sign extension elimination with widening types (TCWG-546 - 10/10)
- Re-wrote the pass from the results of experiments so far
- Fixed most of the regression failures
- 5 tests are still failing from C/C++/Fortran regression suite.
== Plan ==
* Continue with Zero/sign extension pass.
- Get bootstrapping for ARM and AArch64 working
- Fix remaining regression failures
- Add detail dumps
- Remove unnecessary copies (it is now being removed dead code
elimination pass)
- Get patch ready for upstream discussion
== This week ==
* GCC Modularization Project (5/10)
- Reviewed Re-Architecture GNU Cauldron videos by Andrew Macleod
- Reviewed tree/gimple source base
* Linaro bugzilla 602 - gcc 4.7.3 compiler internal error while building
hsail components (2/10)
- Resolved bug by determining that 4.7 compiler was assinging a
incorrect VFP register to a parameter
- Issue was fixed in 4.8 by adding call to arm_hard_regno_ok which
disallowed register
* vector Extensions Project (2/10)
- Preliminary design work on C++ classes and libvpx review
* Misc. (1/10)
- Conducted interview with Prathamesh Kulkarni
- Conference calls
== Next week ==
- GCC Modularization draft plan to TCWG group for review
- Understand status of Re-Architecture work by Andrew Macleod
- Further review of libvpx and vector extensions design work
=== Progress ===
SPEC Benchmarking [5/10]
. managed to run SPEC2k
. managed to run integer parts of SPEC2k6
. spec2xxx-report fails
. can't run full suite as LAVA Junos have insufficient disk
NEON error reporting bugs #403/#418 [3/10]
. ongoing mailing list discussions
vldN_lane patches [1/10]
. respun and committed
Misc [1/10]
=== Plan ===
Talk to Tejas @ ARM about AArch64 NEON loads/stores
Review prep
Move office
Day off at some point (likely Wednesday)
Short week, 2 days off
== Progress ==
* GCC trunk/4.9 cross-validation (2/10)
- committed testsuite patch to support forcing -mword-relocations
option when compiling testglue.c
* Neon intrinsics tests (2/10)
- committed the 1st batch (21 commits)
* AArch64 sanitizer
- libsanitizer internal data depend on the kernel headers version
used to build the toolchain, old_[gu]id_t type changed in 3.15.3.
- discussing the best way to address this
* Misc (2/10)
- calls, meetings
== Next ==
* 4.8 branch merge for next release
* GCC trunk/4.9 cross-validation
- investigate abi_check test, probably another testsuite harness
configuration issue
* AArch64 sanitizer
* Neon intrinsics tests update
* cbuild2:
- analyze previous results
- look at backport-test script + logs
== Progress ==
* Automation Framework (CARD-1378 1/10)
- Setting up Junos with ARM
* Toolchain (CARD-862 1/10)
- Some progress on fpu parser issue
- Produced a lot more work for the near future
* Buildbots (TCWG-76 4/10)
- Setting up a libc++ buildbot, working on reducing failures
- Some bots broken, bisecting
* Background (4/10)
- Code review, meetings, discussions, etc.
- Annual review
- More lab move planning
- EuroLLVM meetings and planning
== Plan ==
* US LLVM whole next week
