Hi everyone,
Note 1: Working on Linaro 50% time.
Note 2: had afternoons off for the first 2 weeks of January
== Progress ==
* Week 1 (2/1 -> 5/1) working for Arm
* Fix poor screen resolution issue
* Onboarding process:
+ read all docs, setup accounts (gmail, octopus, ...)
* PR35157 / TCWG-1308 (Crash in ARM backend for VST1d64TPseudoWB_fixed
instruction):
+ reproduce in llc under gdb, start investigating
== Plan ==
* PR35157 / TCWG-1308 (Crash in ARM backend for VST1d64TPseudoWB_fixed
instruction)
# Progress #
* GDB 8.1 release.
8.1 RC was created. 8.1 will be released soon, I think.
* GDB is confused by the line table generated by GCC with -gcolumn-info
PR 22531. [3/5]
Get a working patch, but need to upstream my refactoring first. Other
two people from upstream are also changing the same file, need to
cooperate.
* Upstream patches review, [2/5]
** Review changes to dwarf2read.c,
** Review one ARMv8 OpenOCD patch,
# Plan #
* PR 22531,
* Resume my pending patches on removing MAX_REGISTER_SIZE.
--
Yao Qi
== Progress ==
o LLVM
* TCWG-1324 (failures of Clang::atomic_ops.c and frem.ll on armv8l host):
- Fix committed in mainline as r322098
* Bugzilla 33011 (MVN instruction "Upredictable" bit patterns incorrect):
- Fix submitted upstream
* Buildbots babysitting.
* LLVM scripts reviews
o Misc
* Various meetings and discussions.
== This Week ==
* GCC bugs (8/10)
- PR81703: Committed to trunk, restricted test-case to x86_64 for now.
- PR83514: Committed to trunk.
- PR82665: Upstream iteration and approved for next stage-1.
- PR83648: Upstream iteration and approved for next stage-1.
- TCWG-1329: Created patch.
- PR83570: Work in progress patch.
* libgo regression (1/10)
- Individual tests failing with makechan size out of range
- Sent patch to add failing tests to unstable-tests.txt
* Misc (1/10)
- libgo regressions
- Meetings
== Next Week ==
- TCWG-1234
- GCC bugs
== Progress ==
* GCC
- FDPIC
- understood crash during program startup (self-relocation):
self-relocated data is set read-only by the dynamic linker.
* GCC upstream validation:
- reported a couple of regressions
- helped validating a couple of patches before they are committed
* Infrastructure:
* misc (conf-calls, meetings, emails, ....)
== Next ==
* GCC/FDPIC
* GCC upstream validation
Hi all,
I wonder if my compiler supports C++11? If not, where could I found the compiler supports c++11 (both 32bit and 64bit arm).
THANKS a lot~~~
My compiler information is as below:
wentao@ubuntu:~/test/lamda$ arm-eabi-g++ -v
Using built-in specs.
COLLECT_GCC=arm-eabi-g++
COLLECT_LTO_WRAPPER=/home/wentao/TeeOS/tools/gcc-linaro-6.3.1-2017.05-x86_64_arm-eabi/bin/../libexec/gcc/arm-eabi/6.3.1/lto-wrapper
Target: arm-eabi
Configured with: '/home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/arm-eabi/snapshots/gcc.git~linaro-6.3-2017.05/configure' SHELL=/bin/bash --with-mpc=/home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/arm-eabi/_build/builds/destdir/x86_64-unknown-linux-gnu --with-mpfr=/home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/arm-eabi/_build/builds/destdir/x86_64-unknown-linux-gnu --with-gmp=/home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/arm-eabi/_build/builds/destdir/x86_64-unknown-linux-gnu --with-gnu-as --with-gnu-ld --disable-libmudflap --enable-lto --enable-shared --without-included-gettext --enable-nls --disable-sjlj-exceptions --enable-gnu-unique-object --enable-linker-build-id --disable-libstdcxx-pch --enable-c99 --enable-clocale=gnu --enable-libstdcxx-debug --enable-long-long --with-cloog=no --with-ppl=no --with-isl=no --enable-multilib --with-multilib-list=aprofile --enable-threads=no --disable-multiarch --with-newlib --with-build-sysroot=/home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/arm-eabi/_build/sysroots/arm-eabi --with-sysroot=/home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/arm-eabi/_build/builds/destdir/x86_64-unknown-linux-gnu/arm-eabi/libc --enable-checking=release --disable-bootstrap --enable-languages=c,c++,lto --build=x86_64-unknown-linux-gnu --host=x86_64-unknown-linux-gnu --target=arm-eabi --prefix=/home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/arm-eabi/_build/builds/destdir/x86_64-unknown-linux-gnu
Thread model: single
gcc version 6.3.1 20170404 (Linaro GCC 6.3-2017.05)
wentao@ubuntu:~/test/lamda$
===>
And more, I wrote a "hello-world" program using c++11, it could work with host g++, but when I change to "arm-eabi-g++", it does not work.
Information as below:
wentao@ubuntu:~/test/lamda$ cat a.cc
#include <iostream>
using namespace std;
typedef void(*Func)();
int main()
{
Func f = [=]() {
cout <<"Hello world"<<endl;
};
f();
return 0;
}
wentao@ubuntu:~/test/lamda$ g++ a.cc -o host
a.cc: In function 'int main()':
a.cc:10:2: warning: lambda expressions only available with -std=c++11 or -std=gnu++11 [enabled by default]
};
^
wentao@ubuntu:~/test/lamda$ ./host
Hello world
wentao@ubuntu:~/test/lamda$ arm-eabi-g++ a.cc -o arm32
a.cc: In function 'int main()':
a.cc:10:2: error: cannot convert 'main()::<lambda()>' to 'Func {aka void (*)()}' in initialization
};
^
wentao@ubuntu:~/test/lamda$ arm-eabi-g++ --std=gnu++11 a.cc -o arm32 # if gives -std=c++11 , the error is the same.
a.cc: In function 'int main()':
a.cc:10:2: error: cannot convert 'main()::<lambda()>' to 'Func {aka void (*)()}' in initialization
};
^
wentao@ubuntu:~/test/lamda$
o 3 days off
== Progress ==
o LLVM
* TCWG-1317 (lencod miscompilation on clang-native-arm-lnt-perf bot):
- Can't reproduce the miscompilation on the builder at
a revision where it should
- Issue fixed on the bot
* TCWG-1324 (failures of Clang::atomic_ops.c and frem.ll on armv8l host):
- Built the toolchains and start to investigate
* Buildbots babysitting:
- Investigate and reported upstream regressions
o Misc
* Catch-up after vacations
== This Week ==
* GCC bugs (8/10)
a) PR83501 - Committed to trunk.
b) PR82665 - Upstream iteration, waiting for final approval.
c) PR83648 - Upstream iteration.
d) PR81703 - Created a fix.
e) PR83661 - Work in progress patch.
* Public Holiday (2/10)
== Next Week ==
- Continue ongoing tasks
* 1 day off (Monday)
== Progress ==
* GCC
- FDPIC
- debugging crash during program startup (self-relocation)
- fixed linker assert when using -static
* GCC upstream validation:
- reported a couple of regressions
- incremental improvements for more robustness, and easier
configuration of validations
* Infrastructure:
* misc (conf-calls, meetings, emails, ....)
== Next ==
* GCC/FDPIC
* GCC upstream validation
* New year holiday
# Progress #
* GDB 8.1 release.
8.1 branch is created. Fix GDB and GDBserver build failure in
release mode. Patches are posted.
Looking at several test fails caused by new GCC emitting multiple
line entries for the same line but with different columns, like,
i = 1; j = 2;
GDB can't step over the whole source line, and program stops at the
middle of the source line.
# Plan #
* GDB 8.1 release.
* Resume my pending patches on removing MAX_REGISTER_SIZE.
--
Yao Qi
