== This Week ==
* TCWG-1234 (4/10)
- Patch inhibits if-conversion for couple of tests.
* TCWG-1253 (3/10)
- Fixed regressions with the patch
* Took Monday off for recovering from travel (2/10)
* Misc (1/10)
- Meetings
== Next Week ==
- TCWG-1234, TCWG-1253, TCWG-319
# Progress #
* TCWG-1040, [4/10]
Update my patches to remove the last use of MAX_REGISTER_SIZE.
Before I send them upstream, I find some bits that I can improve,
but finally, many things are changed. Need to get them in shape,
and think about the design again.
* TCWG-1125, [4/10]
ARMv8 tagged address support in GDB.
GDB/GDBserver needs to remove the top one byte of virtual address
before pass it to kernel. Patch v1 was reviewed, and GDB internal
caching needs updated for tagged address, because tagged address and
non-tagged address should be mapped to the same cache entry in GDB.
* GDB flexible target description conversion [1/10]
Finished the conversion for tic6x and nios2. To be posted.
* ILP32 GDB branch. [1/10]
Got Steve Ellcey's patches, one bfd patch and one gdb patch.
No GDBserver patches. Will create branch with them.
# Plan #
* ILP32 GDB branch.
* ARMv8 tagged address support in GDB.
* Update my patches to remove the last use of MAX_REGISTER_SIZE.
--
Yao Qi
== Progress ==
* GCC
- FDPIC: started reading docs
- testsuite cleanup
* GCC upstream validation:
- reported 2 bugs in qemu-armeb
- noise reduction: polishing dejagnu local patches
- since ubsan merge with upstream, validation of arm targets is now
much longer (typically 1h30 to 6h), leading to timeouts most of the
time
* Infrastructure:
- improved GCC bisect job/scripts
- updated ABE to allow overriding cpu/fpu/tune/arch etc...
* misc (conf-calls, meetings, emails, ....)
== Next ==
* GCC upstream validation
* GCC/ubsan
* GCC/FDPIC
The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2017.10
snapshot of Linaro GCC 6 and 7 source packages.
o The GCC 7 series introduced an ABI change for ARM targets by fixing a bug
(present since GCC 5, see link below) that affects conformance to the
procedure
call standard (AAPCS). The bug affects some C++ code where class objects
are
passed by value to functions and could result in incorrect or inconsistent
code
being generated. If the option -Wpsabi is enabled (on by default) the
compiler
will emit a diagnostic note for code that might be affected by this ABI
change.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77728
For an explanation of the changes please see the following website:
https://gcc.gnu.org/gcc-7/changes.html
o Linaro GCC 7 monthly snapshot[1] is based on FSF GCC 7.2+svn253626 and
includes performance improvements and bug fixes backported from mainline
GCC.
The contents of this snapshot will be part of the 2017.11 stable[2]
quarterly
release.
This snapshot tarball is available on:
http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.2-2017.10/
Interesting changes in this GCC source package snapshot include:
* Updates to GCC 7.2+svn253626
o Linaro GCC 6 monthly snapshot[1] is based on FSF GCC 6.4+svn253668 and
includes performance improvements and bug fixes backported from mainline
GCC.
This snapshot contents will be part of the next maintenance release.
This snapshot tarball is available on:
http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.4-2017.10/
Interesting changes in this GCC source package snapshot include:
* Updates to GCC 6.4+svn253668
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.
[2]. Stable source package releases are defined as releases where the
full Linaro Toolchain validation plan is executed.
== Progress ==
o Linaro GCC/Validation
* Continue releases handover
- Branch merges done
- Monthly snapshots about to be deployed
o LLVM
* Jira cards review
* Checked/updated cards related to upstream BZ
* Continue ramp-up
o Misc
* Various meetings and discussions.
== Plan ==
o Continue release handover and LLVM ramp-up
== This Week ==
* TCWG-1234 (5/10)
- Posted analysis upstream with a test-case.
- Have a workaround that disables hoisting when only single stmt is to
be hoisted.
- Investigating solution to limit distance between hoisted def. and it's uses.
* TCWG-1005 (2/10)
- Did changes based on upstream feedback from Honza, validated patch.
- Waiting for final approval from Honza before committing.
* Sick leave (2/10)
* Misc (1/10)
- Meetings
== Next Week ==
- TCWG-1234, TCWG-1005
* One day off after Connect
== Progress ==
o Linaro GCC/Validation
* Handover releases to ARM on-going.
o LLVM
* Continue ramp-up
o Misc
* Various meetings and discussions.
* Debrief Connect inside ST
== Plan ==
o Continue release handover
o LLVM Jira card: cleanup and find first tasks to do
== This Week ==
* TCWG-1234: code-hoisting regression (3/10)
- Have a workaround that fixes the particular regression (but may
introduce another)
- Trying to cross build benchmarks
- Investigating PRE and code-hoisting optimizations
* TCWG-1005: malloc attr propagation (3/10)
- Iteration based on upstream feedback.
* TCWG-1253 (1/10)
- Committed patch last week to add patterns for div and cmp against 0.
- Patch to transform rshift and cmp against 0 to cmp between operands
in upstream review.
* Public Holiday (2/10)
* Misc (1/10)
- Meetings
== Next Week ==
- TCWG-1234, TCWG-1005
== Connect ==
* Various discussions on GNU toolchain roadmap
== Progress ==
* GCC
- committed fix for PR71727 (strict-align bug on aarch64), backported
to gcc-7-branch
- small fixes in the testsuite
* GCC upstream validation:
- problems with internal infrastructure, but validation results OK
- reported a couple of regressions/new failures
- ran validations for a couple of tentative patches
- noise reduction: looking at how to report randomly killed processes
* misc (conf-calls, meetings, emails, ....)
- Connect feedback (internal)
== Next ==
* GCC upstream validation
* GCC/ubsan
* GCC/deprecated-IT blocks
