* Half day leave on Thu, [1/10].
# Progress #
* arm/aarch64 gdb bug fixing. [3/10]
** TCWG-765, fails in gdb.base/coredump-filter.exp. No progress, as no
one reviews the patch.
** TCWG-672, fails in gdb.base/relativedebug.exp, fixed.
** TCWG-567, fails in gdb.base/break-idempotent.exp, fixed.
** TCWG-767, Propose to disable target-side evaluation of breakpoint
condition for software single step targets. Patch is posted.
* TCWG-805, aarch64 gdb multi-arch support, [2/10]
* TCWG-729, investigate GDB multi-target support, [2/10]
* TCWG-757, upstream patch review, [1/10]
* Misc [1/10]
** Meeting,
** Fill online forms for France visa application,
** Book travel to Grenoble.
# Plan #
* Public holiday on Monday.
* TCWG-805, aarch64 gdb multi-arch support,
* TCWG-729, investigate GDB multi-target support,
* other arm/aarch64 gdb test fails fixing.
--
Yao
benchmark automation - TCWG-360 [3/10]
* Shifted more generic patches from backport branch to review
* One complete run of backport benchmarking before lab went down
Misc [7/10]
* Most of this (4 or 5 tenths) is reaction to lab downtime
=Plan=
Benchmarking test suite
Fish out, finish off thoughts about benchmark access control
NB Next Monday (4th May) is a public holiday in UK
== Progress ==
LLDB development
-- Debugging test code for hardware breakpoint/watchpoint issues on
chromebook for ARM LLDB support [4/10] [TCWG-770]
-- Wrote native process linux helpers for arm and aarch64 hardware
breakpoints [2/10] [TCWG-770] [TCWG-771]
-- Fix, test, debug, cleanup and patch re-submission. [3/10]
-- LLDB ARM SysV ABI implementation. [TCWG-643]
-- LLDB AArch64 SysV ABI implementation. [TCWG-715]
-- Native process linux bug fixes [TCWG-651]
Miscellaneous [1/10]
-- Upstream reviews
-- Meetings, emails, discussions etc.
== Plan ==
LLDB development
-- At least submit lldb arm hardware breakpoint native process linux
helper functions
-- Resubmit register read/write bug fix after changes
-- Resubmit LLDB ARM SysV ABI implementation.
-- Resubmit LLDB AArch64 SysV ABI implementation.
-- Bug fixing, patch reviews etc
== This Week ==
* TCWG-619:
* abe sysroot/libc issue
While building chromium with development build of toolchain on
arm-linux-gnueabihf, I get the following error:
undefined reference to clock_gettime()
Builds fine with release toolchain build.
Symlinking libc in toolchain install directory to
sysroots/arm-linux-gnueabihf appears to work (which is what --tarbin
did).
* PR65778 - v8 fails to build with LTO
- Resolved Invalid
* PR65837 - target specific builtin not available
- created a reduced test case
- There's a weird issue: looks like for lto1, translation unit command
line options,
precede the default ones rather than overriding them.
Assume test.c contains a neon intrinsic:
arm-linux-gnueabihf-gcc -flto -c test.c -mfpu=neon
arm-linux-gnueabihf-gcc -flto test.o
results in target specific builtin not available,
because both -mfpu=neon and -mfpu=vfpv3-d16 is passed
and -mfpu=vfpv3-d16 overrides earlier -mfpu=neon
Passing -mfpu=neon at link time correctly overrides -mfpu=vfpv3-d16.
* PR6778 - ICE in varpool_node::get_constructor.
- Looks like PR65776 appears due to same issue as well.
- It appears error_mark_node gets streamed that causes ICE.
- Triage went wrong, thought it was an error in typeck2.c:check_narrowing().
* PR49551
- The C front-end c/c-decl.c:merge_decls still incorrectly marks the
variable as 'common' for the test-case:
int x = 5;
int x;
However it's not reproducible anymore on trunk (maybe latent?)
- I have an untested patch that resolves the issue in merge_decls().
* Issues
- abe built native gcc on x8_64-unknown-linux-gnu fails to build code
when passed -m32 option (bug 1508).
* Misc
- exams on 20th and 24th april.
* Next week
- Continue working on PR65837, PR65778
- Test patch for PR49551
== Issue ==
* none
== Progress ==
o Upstream GCC (8/10)
* [TCWG-785] ARM backend insn cleanup
- Validate and re-worked the patch
- About to be submitted upstream
* [TCWG-762] - GCC Maintenance
- PR64208 (iWMMXT LRA bug):
Found hardware to validate the fix (Thanks Riku :)
Validation ongoing
* Lot of time wasted due to lab compromisation
o Misc (2/10)
* Various meetings
* GCC git repository branches cleanup
== Plan ==
- Continue cleaning GCC git repo to prepare our migration
- Continue upstream pending work
== Progress ==
* Upstream GCC (9/10)
- TCWG-780 - Improve register allocation for
aarch64_*_sisd_or_int<mode>3 patterns.
- TCWG-486 - Optimize Constant Uses in Loops. Posted the arm part of
the patch that addresses review comments after full testing. Waiting for
the cprop review.
- TCWG-796 Zero/sign extension elimination with vrp. Posted the new set
of patches for review. Looking at the testcases H.J.L. pointed me to.
- TCWG-779 Vector rtx costs for AArch64. Posted the patch that
addresses review comments after full testing.
* Misc (1/10)
- gcc-patches, gcc-bugs list
- Meetings
== Plan ==
- Continue with gcc stage1 activities
- Monday public holiday
# Progress #
* arm/aarch64 gdb bug fixing. [5/10]
** PR 18208 (TCWG-765) fails in gdb.base/coredump-filter.exp. Workaround
tricky quote issue with dejagnu/tcl/ssh/bash. A RFC is posted out.
** Fails in gdb.base/relativedebug.exp (TCWG-672), patch is posted out
review.
** Fails in gdb.base/break-idempotent.exp. Skip some tests in it which
require more than one HW watchpoint registers, while arm-linux only
has one. Patch is posted out.
** TCWG-793, do experiment with showing LSB of address in thumb mode inside GDB,
in order to align with MIPS(microMIPS/MIPS16). It needs more work
than expected, and even out the scope of GDB. It is paused.
* FSF GDB patch review. [4/10]
** Review "all stop on top of non stop" V3, done.
** Review "memory-mapped register browsing" patch. Requested more
information from the author.
* Misc, meeting. [1/10] # Plan # * Fix test fails for arm and aarch64 gdb.
* Continue my HW watchpoint resource counting patches once linaro boxes
are online. These boxes don't have HW watchpoint support, and GDB
doesn't handle this case well.
* Upstream patches review.
--
Yao Qi
== Progress ==
LLDB development
-- Some progress on hardware watchpoint support for lldb arm linux.
[1/10] [TCWG-770]
-- Some progress on hardware watchpoint support for lldb aarch64
linux. [1/10] [TCWG-771]
-- LLDB ARM SysV ABI implementation. [4/10] [TCWG-643]
- Testing and updates with upstream suggestion
- Figuring out a method to handle thumb functions unwind information.
-- LLDB ARM: Bug fixes. [3/10] [TCWG-651]
Miscellaneous [1/10]
-- Upstream reviews
-- Meetings, emails, discussions etc.
== Plan ==
LLDB development
-- Progress towards hardware watchpoint support for lldb arm linux.
-- Progress towards hardware watchpoint support for lldb aarch64 linux.
-- Bug fixing, patch reviews etc
Hi all,
I have built our customized u-boot (u-boot-2012.10-rc3), with two Linaro toolchain, but have no luck with the latest toolchain.
The u-boot built with gcc-linaro-arm-none-eabi-4.9-2014.09_linux can boot on the development board. This toolchain was pre-built toolchain from Linaro, built with crosstool-NG. The version is gcc version 4.9.2 20140904 (prerelease) (crosstool-NG linaro-1.13.1-4.9-2014.09 - Linaro GCC 4.9-2014.09)
With the same u-boot source, the binary built with the Linaro gcc 4.9 2015.04 hang on the same board. The 2nd toolchain was compiled locally on RHEL6, built with ABE tool. We build it locally to avoid "GLIBC_2.14 not found" issue on the pre-built toolchain. The version is gcc version 4.9.3 20150413 (prerelease) (Linaro GCC 2015.04)
Does anyone have an idea what happen? Is it a regression bug in gcc4.9?
Thanks,
Joel
--------------------------------------------------------
[joelz@ldt-joelz]:$ /projects/broadcom-linux/shared/toolchains/gcc-linaro-arm-none-eabi-4.9-2014.09_linux/bin/arm-none-eabi-gcc -v
Using built-in specs.
COLLECT_GCC=/projects/broadcom-linux/shared/toolchains/gcc-linaro-arm-none-eabi-4.9-2014.09_linux/bin/arm-none-eabi-gcc
COLLECT_LTO_WRAPPER=/projects/broadcom-linux/shared/toolchains/gcc-linaro-arm-none-eabi-4.9-2014.09_linux/bin/../libexec/gcc/arm-none-eabi/4.9.2/lto-wrapper
Target: arm-none-eabi
Configured with: /cbuild/slaves/oorts/crosstool-ng/builds/arm-none-eabi-linux/.build/src/gcc-linaro-4.9-2014.09/configure --build=i686-build_pc-linux-gnu --host=i686-build_pc-linux-gnu --target=arm-none-eabi --prefix=/cbuild/slaves/oorts/crosstool-ng/builds/arm-none-eabi-linux/install --with-local-prefix=/cbuild/slaves/oorts/crosstool-ng/builds/arm-none-eabi-linux/install/arm-none-eabi --without-headers --with-newlib --enable-threads=no --disable-shared --with-pkgversion='crosstool-NG linaro-1.13.1-4.9-2014.09 - Linaro GCC 4.9-2014.09' --with-bugurl=https://bugs.launchpad.net/gcc-linaro --disable-__cxa_atexit --with-gmp=/cbuild/slaves/oorts/crosstool-ng/builds/arm-none-eabi-linux/.build/arm-none-eabi/build/static --with-mpfr=/cbuild/slaves/oorts/crosstool-ng/builds/arm-none-eabi-linux/.build/arm-none-eabi/build/static --with-mpc=/cbuild/slaves/oorts/crosstool-ng/builds/arm-none-eabi-linux/.build/arm-none-eabi/build/static --with-isl=/cbuild/slaves/oorts/crosstool-ng/builds/arm-none-eabi-linux/.build/arm-none-eabi/build/static --with-cloog=/cbuild/slaves/oorts/crosstool-ng/builds/arm-none-eabi-linux/.build/arm-none-eabi/build/static --with-libelf=/cbuild/slaves/oorts/crosstool-ng/builds/arm-none-eabi-linux/.build/arm-none-eabi/build/static --enable-lto --enable-linker-build-id --enable-libmudflap --disable-libgomp --enable-libssp --disable-libstdcxx-pch --enable-multilib --enable-languages=c,c++,fortran --with-multilib-list=aprofile
Thread model: single
gcc version 4.9.2 20140904 (prerelease) (crosstool-NG linaro-1.13.1-4.9-2014.09 - Linaro GCC 4.9-2014.09)
---------------------------------------------
[joelz@ldt-joelz]:$ /projects/toolchains/gcc-4.9-rhel6-local-build/bin/arm-linux-gnueabi-gcc -v
Using built-in specs.
COLLECT_GCC=/projects/toolchains/gcc-4.9-rhel6-local-build/bin/arm-linux-gnueabi-gcc
COLLECT_LTO_WRAPPER=/projects/toolchains/abe/_build/builds/destdir/x86_64-unknown-linux-gnu/libexec/gcc/arm-linux-gnueabi/4.9.3/lto-wrapper
Target: arm-linux-gnueabi
Configured with: '/projects/toolchains/abe/_build/snapshots/gcc.git~linaro-4.9-branch/configure' SHELL=/bin/sh --with-bugurl=https://bugs.linaro.org --with-mpc=/projects/toolchains/abe/_build/builds/destdir/x86_64-unknown-linux-gnu --with-mpfr=/projects/toolchains/abe/_build/builds/destdir/x86_64-unknown-linux-gnu --with-gmp=/projects/toolchains/abe/_build/builds/destdir/x86_64-unknown-linux-gnu --with-gnu-as --with-gnu-ld --disable-libstdcxx-pch --disable-libmudflap --with-cloog=no --with-ppl=no --with-isl=no --disable-nls --enable-multiarch --disable-multilib --enable-c99 --with-tune=cortex-a9 --with-arch=armv7-a --with-fpu=vfpv3-d16 --with-float=softfp --with-mode=thumb --with-build-sysroot=/projects/toolchains/abe/_build/sysroots/arm-linux-gnueabi --enable-lto --enable-linker-build-id --enable-long-long --enable-shared --with-sysroot=/projects/toolchains/abe/_build/builds/sysroot-arm-linux-gnueabi --enable-languages=c,c++,fortran,lto --enable-fix-cortex-a53-835769 --enable-checking=yes --disable-bootstrap --with-bugurl=https://bugs.linaro.org --with-pkgversion='Linaro GCC 2015.04' --build=x86_64-unknown-linux-gnu --host=x86_64-unknown-linux-gnu --target=arm-linux-gnueabi --prefix=/projects/toolchains/abe/_build/builds/destdir/x86_64-unknown-linux-gnu
Thread model: posix
gcc version 4.9.3 20150413 (prerelease) (Linaro GCC 2015.04)
