== Progress ==
* Validation
- a couple of fixes in the validation jobs
- looking at timeouts problems with buildfarm-master
* GCC
- TCWG-485/PR68620: sent patch for review
- TCWG-484/target attributes problems in the testsuite
Rebased, but need more pending updates from Christian
* Misc (conf calls, meetings, emails, ...)
== Next ==
* Validation: more debug. Hopefully start extending validation scope
* GCC:
- bug fixing
- check trunk regressions reported during the holidays
The Linaro Toolchain Working Group (TCWG) is pleased to announce the
2016.01 snapshot of the Linaro GCC 5 source package.
This monthly snapshot[1] is based on FSF GCC 5.3+svn232321 and
includes performance improvements and bug fixes backported from
mainline GCC. This snapshot contents will be part of the 2016.02
stable [1] quarterly release.
This snapshot tarball is available on:
http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.01/
Interesting changes in this GCC source package snapshot include:
* Updates to GCC 5.3+svn232321
* Fixes Linaro Bugzillas: #1982, #1980
* Backport of [BugFix] [AArch32] PR 68149 Fix ICE in unaligned_loaddi split
* Backport of [BugFix] [AArch32] PR target/68214: Delete
IP-reg-clobbering call-through-mem patterns
* Backport of [BugFix] [AArch32] PR target/68390
* Backport of [Bugfix] [AArch64] PR rtl-optimization/68796 Add
compare-of-zero_extract pattern
* Backport of [BugFix] [AArch64] PR target/68696 FAIL:
gcc.target/aarch64/vbslq_u64_1.c scan-assembler-times bif\tv 1
* Backport of [BugFix] PR rtl-optimization/68381
* Backport of [ARMv8.1] [AArch32] Add ACLE feature macro for ARMv8.1
instructions
* Backport of [ARMv8.1] [AArch32] Add ACLE intrinsics vqrdmlah and vqrdmlsh
* Backport of [ARMv8.1] [AArch32] Add ACLE intrinsics vqrdmlah_lane
and vqrdmlsh_lane
* Backport of [ARMv8.1] [AArch32] Add patterns for new instructions
* Backport of [ARMv8.1] [AArch32] Add support for ARMv8.1
* Backport of [ARMv8.1] [AArch32] Multilib support for ARMv8.1.
* Backport of [ARMv8.1] [AArch32] Support ARMv8.1 ARM tests
* Backport of [AArch32] [AArch32] Fix armv8.1 support at configure time
* Backport of [AArch32] Add attribute for compatibility with ARM pipeline models
* Backport of [AArch32] Fix vector TYPE_MODE in streaming-out
* Backport of [AArch64] 1/7 Add support for ARMv8.1 Adv.SIMD instructions
* Backport of [AArch64] 2/7 Add sqrdmah, sqrdmsh instructions
* Backport of [AArch64] 3/7 Add builtins for ARMv8.1 Adv.SIMD instructions
* Backport of [AArch64] 4/7 Add ACLE feature macro for ARMv8.1
Adv.SIMD instructions
* Backport of [AArch64] 5/7 Dejagnu support for ARMv8.1 Adv.SIMD
* Backport of [AArch64] 6/7 Add NEON intrinsics vqrdmlah and vqrdmlsh
* Backport of [AArch64] 7/7 Add NEON intrinsics vqrdmlah_lane and vqrdmlsh_lane
* Backport of [AArch64] Documentation fix for -fpic
* Backport of [AArch64] fix 3/7 Add builtins for ARMv8.1 Adv.SIMD instructions
* Backport of [AArch64] Fix a few failures with LSE enabled
* Backport of [AArch64] Improve add immediate expansion
* Backport of [AArch64] Improve comparison with complex immediates
followed by branch/cset
* Backport of [AArch64] Rework ARMv8.1 command line options
* Backport of [AArch64] Update patterns to support FP zero
* Backport of [AArch64] Use aarch64_sync_memory_operand in
atomic_store<mode> pattern
* Backport of [AArch64] Use vector wide add for mixed-mode adds
* Backport of [Misc] Only restrict pure simplification in mult-extend
subst case, allow other substitutions
* Backport of [Testsuite] [AArch64] Skip big-endian as well for
gcc.target/aarch64/got_mem_hoist_1.c
* Backport of [Testsuite] Make stackalign test LTO proof
* Backport of [Testsuite] Testcase for PR rtl-optimization/68381
Feedback and Support
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]. Stable source package releases are defined as releases where the
full Linaro Toolchain validation plan is executed.
[2]. Source package snapshots are defined when the compiler is only
put through unit-testing and full validation is not performed.
o Teaching activity (6/10)
== Progress ==
o Linaro GCC (4/10)
* Restart validation blocked by the last infrastructure issues
* Discussed and reviewed Jenkins jobs fixes.
* Tested potential upstream fixes for linaro BZ 1980 and 1982,
but reverting the offending backports is a better solution.
== Plan ==
o Complete backports and deliver 2016.01 GCC snapshot.
Centralized benchmark source - TCWG-354 [1/10]
* Fixed some bugs in Coremark reporting
* Experimented some more with clang builds, set this aside for now
Port to microinstance - TCWG-432 [3/10]
* Fixed some false assumptions exposed by change to uinstance
* Worked on LAVA side of coremark reporting
Backport benchmarking - TCWG-352 [4/10]
* Fixed some bugs that appeared over the holiday
* Got job dispatching benchmark run to microinstance, with pointer to
backport-containing toolchain
* But resulting job fails
Benchmarking infra documentation - TCWG-496 [1/10]
* Started documenting LAVA wrapper
Misc [1/10]
=Plan=
LAVA side of coremark reporting
Fix backport-dispatched benchmark job
Much more documentation
== Progress ==
LLDB development
-- Fixed thumb mode issues if user triggers changes to PC register
[TCWG-228] [3/10]
-- Triage of testsuite failures on armel chromebook [TCWG-228] [2/10]
-- Update xfail decorators for arm-linux targets. Marked traiged as
xfail. [TCWG-494] [3/10]
Miscellaneous [1/10]
-- Meetings, emails, discussions etc.
Half Day Leave [1/10]
-- Tooth extraction surgery.
== Plan ==
LLDB development
-- Triage more failures on armel chromebook [TCWG-228]
-- Submit an updated xfail decorator for arm-linux. [TCWG-494]
Miscellaneous
-- Connect visa follow up.
== This Week ==
* tcwg-72 (2/10)
- Following Jim's suggestions using XEXP (remainder, 0) worked to
resolve segfault
for DImode case
- Resolved ICE's due to (silly) mistakes.
* PR69133 (4/10)
- Reduced test-case following Markus's suggestions.
- I think it happens because node->lto_file_data is set to NULL in
lto_free_function_in_decl_state_for_node ().
Commenting out the following calls from get_untransformed_body():
lto_free_section_data (file_data, LTO_section_function_body, name,
data, len, decl_state->compressed);
lto_free_function_in_decl_state_for_node (this);
prevents the ICE. I suppose symbols with same name in same partition
share state (?), so setting lto_file_data = NULL
affects state of 2nd occurence of symbol and we hit the assert.
If this is true, gating on lto_file_data doesn't seem unreasonable IMO
to avoid ICE (the code anyway has undefined behavior due to violation of ODR).
I am still not sure why this "works" for partitioning enabled (one,
balanced, 1to1).
* 447.deallII bug (1/10)
- Bug not reproducible (verified with Kugan).
* TCWG-319 benchmarking (1/10)
- first job submission failed due to kernel panic
- a53: base fp run completed, with-patch in progress
* Misc (2/10)
- Meetings
- ipa
== Progress ==
* Validation
- a couple of fixes in the validation jobs
- improvements to the comparison scripts
* GCC
- investigated bugs #1980 and #1982.
Reverted the backports that introduced the problem.
- TCWG-485/PR68620: resumed
- TCWG-484: target attributes problems in the testsuite.
Sent an updated patch, but Christian has also submitted
a patch which modifies the compiler behavior. I'll have
to update mine when his patch is accepted.
* Misc (conf calls, meetings, emails, ....)
== Next ==
* Validation: more cleanup. Hopefully start extending validation scope
* GCC:
- bug fixing
- check trunk regressions reported during the holidays
== Progress ==
* Support (2/10)
- Having a go at PR25722, too hacky for a feature that can
be easily worked around.
- Reviewing some kernel issues with Arnd
* Planning (6/10)
- Drafting 2 year plans for LLVM
* Background (2/10)
- Code review, meetings, discussions, general support, etc.
- Catching up from long holidays
