== Issues ==
* none
== Progress ==
* LRA on AArch32:
o TCWG-343 : Make LRA the default for the ARM backend (0/10)
- Stop progress on this card, will close it when FSF 4.9 will be released.
o TCWG-345 : Analyse performance of LRA for ARM. (4/10)
- Spec2K figures on Cortex-a15 Analysis.
- re-run benchs in console mode chrubuntu without ASLR + perf tool
* Backports review: (2/10)
o Start to prepare cortex-a53 backports review
* Misc:
o Various meetings and slideware (4/10).
- Linaro and internal ones.
== Next ==
- continue cortex-a53 review
- some backports to do.
- continue on TCWG-345
== Progress ==
* Worked on getting eglibc git mirror back up and running
* Released eglibc 2.19 2014.04
* Respin of glibc aarch64 setcontext patches
* Respin of ld aarch64 RELASZ patch
* Tidied up, rebased and committed ARM ld pointer equality patch
* Work on resurrecting glibc benchmark result graphing script
* Holiday on Friday
== Issues ==
* Couple of hours power outage on Monday
== Plan ==
* Get outstanding glibc and binutils patches committed
* Reorganise JIRA cards for malloc work
* glibc benchmarking
--
Will Newton
Toolchain Working Group, Linaro
== Progress ==
* Add support for fork/vfork/exec events/catchpoints in remote
gdbserver [TCWG-263] [4/10]
-- Debugged catchpoint code and reviewed gdbserver implementation for events.
-- Still require a lot of code understanding before actual
implementation can start.
* Wrote a script that takes two gdb build trees and configuration
arguments to test them in native, remote-native and remote-target
configurations [TCWG-96] [3/10]
* Laptop OS re-install [1/10]
* GDB open cards issues review [1/10]
* Sick half day off on Friday [1/10]
== Plan ==
* Complete work on TCWG-96.
-- Write a script that tests gdb in remote-native configuration using ssh.
-- Integrate all testing scripts and test them.
-- Update wiki page with updated scripts and how to use them.
* Monday Day Off: Pakistan Day 23rd March public holiday roll over.
== Progress ==
CARD-1210 - optimizing prologue/epilogue With -fomit-frame-pointer (4/10)
- regression tested the patch and fixed issues
- Dropping the patch and closing the card as it has been worked on at arm.
TCWG-15 - zero/sign extension elimination for crc (3/10)
- Looked at crc and looked at the other optimizations listed in card 440.
- Improved the local patch to remove the missing optimization
TCWG-413 - Running spec2006 with aarch64 (3/10)
- Built and set-up spec2006.
- Ran into to some compile time and run time errors
== Plan ==
Continue with zero/sign extension elimination
Start looking at literal pool merging
== This week ==
Merged all backports related to a53 support and successfully built arm
and aarch64 cross compilers:
202333 - [AArch64, ARM] Introduce "mrs" type attribute.
202334 - [AArch64] Use neon_<ldm,stm>_2 where appropriate as "type".
202448 - [AArch64] Prevent generic pipeline description from dominating
other pipeline descriptions.
202560 - set "type" attribute properly in arm_cmpsi_insn, cleanup
203241 - Cortex-a53 use Cortex tuning
203611 – 203621 – Neon types Parts 1 to 10
204575 - [ARM, AArch64] Make aarch-common.c files more robust.
205050 - [ARM] Add missing type attribute to zero_extend on arm
204782 - [AArch64] [-mtune cleanup 2/5] Tune for Cortex-A53 by default.
204784 - [AArch64] [-mtune cleanup 4/5] Remove "example-1", "example-2"
tuning options.
204852 - [AArch64] Remove simd_type
205014 - [AArch64] Remove v8type attribute.
205105 - [AArch64] Remove "mode", "mode2" attributes
204783 - [AArch64] [-mtune cleanup 3/5] [Temporary] When asked to tune
for Cortex-A57, tune for Cortex-A15
== Next week ==
Test a53 support
Backport vectorization bug
== Future ==
== Issues ==
* None
== Progress ==
* Identify a missing instruction pattern which blocks fcsel
optimization. A patch was sent out for community review. [2/10,
TCWG-309]
* Identify a ICE when handling dwarf-info in ARM backend when testing
shrink-wrap. A fix was committed to trunk. [2/10]
* Rebase and test the shrink-wrap codes for APCS_FRAME. [5/10]
* Prepare Linaro toolchain 2014.03 binaries release [1/10].
* Investigate CRC improvement chances.
== Plans ==
* Create a prebuilt sysroot based on Linaro eglibc-2014.04.
* Continue on shrink-wrap.
== Progress ==
* AArch64 (TCWG-387)
- Implemented simple C sin/cos functions for sphereflake
- AArch64 builds, passes check-all and test-suite
- Closed Jira task
* IAS (TCWG-377)
- Updated release notes
- IAS build, passes check-all, test-suite and compiles other large codebases
- Closed Jira task
* EHABI (TCWG-124)
- Updated release notes
- EHABI builds, passes check-all, test-suite
- Waiting for last patch to go to close the Jira task
* Compiler-RT (TCWG-125)
- Re-testing with current trunk+RT, all pass
- Next step, libunwind (not ready yet)
* Background
- Patch review, etc
- Studying TableGen, writing some docs (http://llvm.org/docs/TableGen/)
- Proposing changes to debug/EH unwind function attributes in IR
- Changing Zorg to not submit LNT reports by default (avoids bot breakage)
- Planning LLVM+Linux involvement as next big task
* Time
- CARD-862 8/10
- Others 2/10
== Plan ==
* Continue pushing __builtin___clear_cache and -fno-unwind-tables upstream
* Implement the Clang part of __builtin___clear_cache and update the docs
* Try to add LLVM/Clang to cbuildv2
* Start merging libunwind from libc++ to Compiler-RT and test it on ARM
* Get the kernel task started with the LLVMLinux guys
Hello,
the attached program changes the output from "true" to "false" when the
-Bsymbolic / -Bsymbolic-functions options are passed to GCC. This
happens on ARM -- on x86-64 output is always "true".
The program involves a comparison, within a shared library, of a PMF
defined inside the shared library itself with the same PMF passed by the
application.
At this stage I still don't know if it's a GCC problem, a ld.so problem,
ABI constraints, undefined behaviour, or whatnot; but any help is
appreciated.
Compile with:
> g++ -fPIC -shared -Wall -o libshared.so -Wl,-Bsymbolic shared.cpp
> g++ -fPIE -Wall -o main main.cpp -L. -lshared
(The long story is that Qt 5 is taking PMFs in its public API, and the
comparison failing inside of Qt shared libraries is breaking code on
ARM, as -Bsymbolic is set by default there.)
Thanks,
--
Giuseppe D'Angelo | giuseppe.dangelo(a)kdab.com | Software Engineer
KDAB (UK) Ltd., a KDAB Group company
Tel. UK +44-1738-450410, Sweden (HQ) +46-563-540090
KDAB - Qt Experts - Platform-independent software solutions
