[llvm-dev] Debug info for CUDA code

Alexey Bataev via llvm-dev llvm-dev at lists.llvm.org
Wed Jan 15 11:20:11 PST 2020


Hi Char, not sure if clang supports 10.2. You can ry to use trunk
instead of release and check it yourself. Most probably clang 10 will
support cuda 10. Also, you can use cuda 9 safely, just replace ptxas in
the installation dir with the newest ptxas from cuda 10.2

-------------
Best regards,
Alexey Bataev

15.01.2020 9:17 AM, treinz пишет:
> Hi Alexey,
>
> Almost a year has passed and Nvidia finally fixes the ptxas issue in
> CUDA 10.2 according to:
> https://docs.nvidia.com/cuda/cuda-toolkit-release-notes/index.html#cuda-compiler-resolved-issues
> However, I can not yet use it with llvm 9.0.0 release because CUDA
> 10.2 is not supported yet. Is there other branches of the llvm repo
> that supports CUDA 10.2 now? Or do I need to wait for llvm 10 releaase.
>
> Thanks,
> Char
>
> At 2019-02-28 02:09:54, "Alexey Bataev" <a.bataev at outlook.com> wrote:
>
>     Hi Char, it looks like they have some kind of buffer overflow bug
>     in their ptxas tool.
>
>     -------------
>     Best regards,
>     Alexey Bataev
>
>     27.02.2019 13:08, treinz пишет:
>>     Hi Alexey,
>>
>>     I submitted the bug report to nvidia. While they are working on
>>     it, can you share some insight in what could potentially cause
>>     this? I just want to get a sense if such a bug require
>>     significant amount of work to fix, which can help me make some
>>     decision moving forward with my project.
>>
>>     Thanks,
>>     Char
>>
>>     At 2019-02-27 03:19:02, "Alexey Bataev" <a.bataev at outlook.com> wrote:
>>
>>         Hi Char, yes, this line causes the crash. You don't need .cu
>>         files (I don't know what files are you talking about, clang
>>         does not generate .cu files). You need just this .s file to
>>         reproduce the error and nothing else.
>>
>>         -------------
>>         Best regards,
>>         Alexey Bataev
>>
>>         26.02.2019 13:06, treinz пишет:
>>>         Hi Alexey,
>>>
>>>         Just want to make sure I understand what you said because
>>>         I'm not familiar with the llvm pipeline, it's this line:
>>>
>>>         /net/gs/vol3/software/modules-sw/cuda/10.0/Linux/RHEL6/x86_64/bin/ptxas"
>>>         -m64 -g --dont-merge-basicblocks --return-at-end -v
>>>         --gpu-name sm_75 --output-file
>>>         /tmp/60663577.1.login.q/testparticles-4fd988.o
>>>         /tmp/60663577.1.login.q/testparticles-1d20c4.s
>>>
>>>         that segfaults, where the testparticles-1d20c4.s is
>>>         generated by the command:
>>>
>>>         /home/aznb/.linuxbrew/Cellar/llvm/HEAD-48aefa8/bin/clang-9"
>>>         -cc1 -triple nvptx64-nvidia-cuda -aux-triple
>>>         x86_64-unknown-linux-gnu -S -disable-free
>>>         -disable-llvm-verifier -discard-value-names -main-file-name
>>>         testparticles.cpp -mrelocation-model static -mthread-model
>>>         posix -mdisable-fp-elim -no-integrated-as -fuse-init-array
>>>         -fcuda-is-device -mlink-builtin-bitcode
>>>         /net/gs/vol3/software/modules-sw/cuda/10.0/Linux/RHEL6/x86_64/nvvm/libdevice/libdevice.10.bc
>>>         -target-feature +ptx61 -target-cpu sm_75 -dwarf-column-info
>>>         -debug-info-kind=limited -dwarf-version=2
>>>         -debugger-tuning=gdb -v -resource-dir
>>>         /home/aznb/.linuxbrew/Cellar/llvm/HEAD-48aefa8/lib/clang/9.0.0
>>>         -internal-isystem
>>>         /home/aznb/.linuxbrew/Cellar/llvm/HEAD-48aefa8/lib/clang/9.0.0/include/cuda_wrappers
>>>         -internal-isystem
>>>         /net/gs/vol3/software/modules-sw/cuda/10.0/Linux/RHEL6/x86_64/include
>>>         -include __clang_cuda_runtime_wrapper.h -isystem
>>>         /home/aznb/.linuxbrew/Cellar/boost/1.68.0_clang/include/boost-1_68
>>>         -I /home/aznb/mycodes/scbmc -I
>>>         /home/aznb/mycodes/scbmc/build_cuda_clang_debug/_deps/kokkos-src/core/src
>>>         -I
>>>         /home/aznb/mycodes/scbmc/build_cuda_clang_debug/_deps/kokkos-src/containers/src
>>>         -I
>>>         /home/aznb/mycodes/scbmc/build_cuda_clang_debug/_deps/kokkos-src/algorithms/src
>>>         -I
>>>         /home/aznb/mycodes/scbmc/build_cuda_clang_debug/_deps/kokkos-build
>>>         -I /home/aznb/mycodes/scbmc/../thrust -I
>>>         /net/gs/vol3/software/modules-sw/cuda/10.0/Linux/RHEL6/x86_64/include
>>>         -I
>>>         /home/aznb/mycodes/scbmc/build_cuda_clang_debug/_deps/kokkosutils-src
>>>         -I
>>>         /home/aznb/mycodes/scbmc/build_cuda_clang_debug/_deps/alias-src
>>>         -I
>>>         /home/aznb/mycodes/scbmc/build_cuda_clang_debug/_deps/ziggurat-src
>>>         -I
>>>         /home/aznb/mycodes/scbmc/build_cuda_clang_debug/_deps/distribution-src
>>>         -I
>>>         /home/aznb/mycodes/scbmc/build_cuda_clang_debug/_deps/generic-src
>>>         -internal-isystem
>>>         /home/aznb/.linuxbrew/lib/gcc/x86_64-unknown-linux-gnu/5.5.0/../../../../include/c++/5.5.0
>>>         -internal-isystem
>>>         /home/aznb/.linuxbrew/lib/gcc/x86_64-unknown-linux-gnu/5.5.0/../../../../include/c++/5.5.0/x86_64-unknown-linux-gnu
>>>         -internal-isystem
>>>         /home/aznb/.linuxbrew/lib/gcc/x86_64-unknown-linux-gnu/5.5.0/../../../../include/c++/5.5.0/backward
>>>         -internal-isystem
>>>         /home/aznb/.linuxbrew/lib/gcc/x86_64-unknown-linux-gnu/5.5.0/../../../../include/c++/5.5.0
>>>         -internal-isystem
>>>         /home/aznb/.linuxbrew/lib/gcc/x86_64-unknown-linux-gnu/5.5.0/../../../../include/c++/5.5.0/x86_64-unknown-linux-gnu
>>>         -internal-isystem
>>>         /home/aznb/.linuxbrew/lib/gcc/x86_64-unknown-linux-gnu/5.5.0/../../../../include/c++/5.5.0/backward
>>>         -internal-isystem /usr/local/include -internal-isystem
>>>         /home/aznb/.linuxbrew/Cellar/llvm/HEAD-48aefa8/lib/clang/9.0.0/include
>>>         -internal-externc-isystem /include -internal-externc-isystem
>>>         /usr/include -internal-isystem /usr/local/include
>>>         -internal-isystem
>>>         /home/aznb/.linuxbrew/Cellar/llvm/HEAD-48aefa8/lib/clang/9.0.0/include
>>>         -internal-externc-isystem /include -internal-externc-isystem
>>>         /usr/include -O0 -std=c++17 -fdeprecated-macro
>>>         -fno-dwarf-directory-asm -fdebug-compilation-dir
>>>         /home/aznb/mycodes/scbmc/build_cuda_clang_debug
>>>         -ferror-limit 19 -fmessage-length 0 -fobjc-runtime=gcc
>>>         -fcxx-exceptions -fexceptions -fdiagnostics-show-option -o
>>>         /tmp/60663577.1.login.q/testparticles-1d20c4.s -x cuda
>>>         /home/aznb/mycodes/scbmc/testparticles.cpp
>>>
>>>         Both of these commands were shown in the error log. How do I
>>>         replace my original cpp files with the two *.cu files
>>>         automatically generated by llvm in the above command to
>>>         reproduce the bug?
>>>
>>>         Thanks,
>>>         Char
>>>
>>>
>>>         At 2019-02-26 09:22:35, "Alexey Bataev"
>>>         <a.bataev at outlook.com> wrote:
>>>
>>>             Hi Char, unfortunately I cannot help you with these
>>>             crashes, because they caused not by clang /LLVM, but the
>>>             NVidia's PTX-to-SASS translator ptxas. It is ptxas who
>>>             crashes and I can't do anything about this. You need to
>>>             report the bug to NVidia, but you need to manually run
>>>             the ptxas tool with the generated  .s file. Sometimes it
>>>             helps to compile the code sequentially, not using the
>>>             parallel builds. Plus, those crashes may disappear from
>>>             time to time.
>>>
>>>             Best regards,
>>>             Alexey Bataev
>>>
>>>             25 февр. 2019 г., в 19:59, treinz <treinz at 163.com
>>>             <mailto:treinz at 163.com>> написал(а):
>>>
>>>>             Hi Alexey,
>>>>
>>>>             Thanks for the great work! The version I checked out
>>>>             works most of the time. But I do encounter crashes
>>>>             sometimes. I can't file a bug report
>>>>             on https://bugs.llvm.org/ because I don't have an
>>>>             account. I sent an email to bugs-admin at lists.llvm.org
>>>>             <mailto:bugs-admin at lists.llvm.org> for an account
>>>>             already but I haven't heard back. Meanwhile, can you
>>>>             take a look at the issue? I'm attaching the bug report
>>>>             files here -- the clang_error.log has the verbose
>>>>             output from clang and the other files are generated
>>>>             automatically by clang upon the crash. I'm using the
>>>>             above-mentioned commit
>>>>             48aefa8877713616802d9c90b63f86fe50b9a101 from github
>>>>             mirror. The bug is reproducible on my machine with a
>>>>             nvidia RTX2080 card (sm=Turing75).
>>>>
>>>>             Thanks,
>>>>             Char
>>>>
>>>>             At 2019-01-24 03:25:39, "Alexey Bataev"
>>>>             <a.bataev at outlook.com <mailto:a.bataev at outlook.com>> wrote:
>>>>
>>>>                 Yes, this one.
>>>>
>>>>                 -------------
>>>>                 Best regards,
>>>>                 Alexey Bataev
>>>>
>>>>                 23.01.2019 14:17, treinz via llvm-dev пишет:
>>>>>                 Hi Alexey,
>>>>>
>>>>>                 Thanks for working on this. I assume the last
>>>>>                 commit you mentioned is:
>>>>>
>>>>>                 commit 48aefa8877713616802d9c90b63f86fe50b9a101
>>>>>                 (HEAD -> master, origin/master, origin/HEAD)
>>>>>                 Author: Alexey Bataev <a.bataev at hotmail.com>
>>>>>                 Date:   Wed Jan 23 18:59:54 2019 +0000
>>>>>
>>>>>                     [DEBUGINFO, NVPTX] Enable support for the
>>>>>                 debug info on NVPTX target.
>>>>>
>>>>>                     Enable full support for the debug info.
>>>>>
>>>>>                     Differential revision:
>>>>>                 https://reviews.llvm.org/D46189
>>>>>
>>>>>                     git-svn-id:
>>>>>                 https://llvm.org/svn/llvm-project/llvm/trunk@351974
>>>>>                 91177308-0d34-0410-b5e6-96231b3b80d8
>>>>>
>>>>>                 I'll check this one out. 
>>>>>
>>>>>                 Thanks,
>>>>>                 Char
>>>>>
>>>>>                 At 2019-01-24 03:01:18, "Alexey Bataev"
>>>>>                 <a.bataev at outlook.com> wrote:
>>>>>
>>>>>                     Hi Char, I found the problem, for some reason
>>>>>                     the last patch was applied correctly. Just
>>>>>                     committed the fixed version. Tried to compile
>>>>>                     axpy.cu, everything works.
>>>>>
>>>>>                     -------------
>>>>>                     Best regards,
>>>>>                     Alexey Bataev
>>>>>
>>>>>                     23.01.2019 13:37, treinz пишет:
>>>>>>                     Hi Alexey,
>>>>>>
>>>>>>                     I tried the b7195a6 from the llvm github
>>>>>>                     mirror, which does include your commit D46189
>>>>>>                     <https://reviews.llvm.org/D46189> (see
>>>>>>                     below). But it can't compile the example
>>>>>>                     program
>>>>>>                     on https://llvm.org/docs/CompileCudaWithLLVM.html#invoking-clang
>>>>>>                     <https://llvm.org/docs/CompileCudaWithLLVM.html#invoking-clang.> --
>>>>>>                     the error is:
>>>>>>
>>>>>>                     [aznb at asp testcuda]$ clang++ axpy.cu -g -o
>>>>>>                     axpy --cuda-gpu-arch=sm_61 -lcudart_static
>>>>>>                     -ldl -lrt -pthread -v
>>>>>>                     clang version 9.0.0
>>>>>>                     (https://git.llvm.org/git/clang.git
>>>>>>                     4566ed0d7c076ad061168f7c6cb5fa3a793614a8)
>>>>>>                     (https://git.llvm.org/git/llvm.git
>>>>>>                     b7195a6d8d9064c4fac6a7b91826de80df394f69)
>>>>>>                     Target: x86_64-unknown-linux-gnu
>>>>>>                     Thread model: posix
>>>>>>                     InstalledDir: /home/aznb/.linuxbrew/bin
>>>>>>                     Found candidate GCC installation:
>>>>>>                     /home/aznb/.linuxbrew/bin/../lib/gcc/x86_64-unknown-linux-gnu/5.5.0
>>>>>>                     Found candidate GCC installation:
>>>>>>                     /usr/lib/gcc/x86_64-redhat-linux/4.4.4
>>>>>>                     Found candidate GCC installation:
>>>>>>                     /usr/lib/gcc/x86_64-redhat-linux/4.4.7
>>>>>>                     Selected GCC installation:
>>>>>>                     /home/aznb/.linuxbrew/bin/../lib/gcc/x86_64-unknown-linux-gnu/5.5.0
>>>>>>                     Candidate multilib: .;@m64
>>>>>>                     Selected multilib: .;@m64
>>>>>>                     Found CUDA installation:
>>>>>>                     /net/vol3/software/modules-sw/cuda/10.0/Linux/RHEL6/x86_64,
>>>>>>                     version 10.0
>>>>>>                      "/home/aznb/mycodes/testcuda -ferror-limit
>>>>>>                     19 -fmessage-length 0 -pthread
>>>>>>                     -fobjc-runtime=gcc -fcxx-exceptions
>>>>>>                     -fexceptions -fdiagnostics-show-option -o
>>>>>>                     /tmp/59224042.1.login.q/axpy-560f45.s -x cuda
>>>>>>                     axpy.cu
>>>>>>                     clang -cc1 version 9.0.0 based upon LLVM
>>>>>>                     9.0.0svn default target x86_64-unknown-linux-gnu
>>>>>>                     ignoring nonexistent directory "/include"
>>>>>>                     ignoring nonexistent directory "/include"
>>>>>>                     ignoring duplicate directory
>>>>>>                     "/home/aznb/.linuxbrew/bin/../lib/gcc/x86_64-unknown-linux-gnu/5.5.0/../../../../include/c++/5.5.0"
>>>>>>                     ignoring duplicate directory
>>>>>>                     "/home/aznb/.linuxbrew/bin/../lib/gcc/x86_64-unknown-linux-gnu/5.5.0/../../../../include/c++/5.5.0/x86_64-unknown-linux-gnu"
>>>>>>                     ignoring duplicate directory
>>>>>>                     "/home/aznb/.linuxbrew/bin/../lib/gcc/x86_64-unknown-linux-gnu/5.5.0/../../../../include/c++/5.5.0/backward"
>>>>>>                     ignoring duplicate directory "/usr/local/include"
>>>>>>                     ignoring duplicate directory
>>>>>>                     "/home/aznb/.linuxbrew/Cellar/llvm/HEAD-b7195a6/lib/clang/9.0.0/include"
>>>>>>                     ignoring duplicate directory "/usr/include"
>>>>>>                     #include "..." search starts here:
>>>>>>                     #include <...> search starts here:
>>>>>>                      /home/aznb/.linuxbrew/Cellar/llvm/HEAD-b7195a6/lib/clang/9.0.0/include/cuda_wrappers
>>>>>>                      /net/vol3/software/modules-sw/cuda/10.0/Linux/RHEL6/x86_64/include
>>>>>>                      /home/aznb/.linuxbrew/bin/../lib/gcc/x86_64-unknown-linux-gnu/5.5.0/../../../../include/c++/5.5.0
>>>>>>                      /home/aznb/.linuxbrew/bin/../lib/gcc/x86_64-unknown-linux-gnu/5.5.0/../../../../include/c++/5.5.0/x86_64-unknown-linux-gnu
>>>>>>                      /home/aznb/.linuxbrew/bin/../lib/gcc/x86_64-unknown-linux-gnu/5.5.0/../../../../include/c++/5.5.0/backward
>>>>>>                      /usr/local/include
>>>>>>                      /home/aznb/.linuxbrew/Cellar/llvm/HEAD-b7195a6/lib/clang/9.0.0/include
>>>>>>                      /usr/include
>>>>>>                     End of search list.
>>>>>>                      "/net/vol3/software/modules-sw/cuda/10.0/Linux/RHEL6/x86_64/bin/ptxas"
>>>>>>                     -m64 -g --dont-merge-basicblocks
>>>>>>                     --return-at-end -v --gpu-name sm_61
>>>>>>                     --output-file
>>>>>>                     /tmp/59224042.1.login.q/axpy-1ebb06.o
>>>>>>                     /tmp/59224042.1.login.q/axpy-560f45.s
>>>>>>                     ptxas /tmp/59224042.1.login.q/axpy-560f45.s,
>>>>>>                     line 290; fatal   : Parsing error near '{':
>>>>>>                     syntax error
>>>>>>                     ptxas fatal   : Ptx assembly aborted due to
>>>>>>                     errors
>>>>>>                     clang-9: error: ptxas command failed with
>>>>>>                     exit code 255 (use -v to see invocation)
>>>>>>
>>>>>>                     Maybe it's related to the illegal assembly
>>>>>>                     code mentioned
>>>>>>                     in https://reviews.llvm.org/D46189 Any idea
>>>>>>                     what's going on? I'm including other people
>>>>>>                     to see if they have any
>>>>>>                     suggestion. https://reviews.llvm.org/D46189 also
>>>>>>                     mentioned that this is fixed but has the
>>>>>>                     fixed been merged in the trunk yet?
>>>>>>
>>>>>>                     BTW, github mirror's b7195a6 does include
>>>>>>                     your commit about the debug info on nvptx:
>>>>>>
>>>>>>                     commit d77902a49a06890b97e33515d346c6e4df6b756b
>>>>>>                     Author: Alexey Bataev <a.bataev at hotmail.com>
>>>>>>                     Date:   Tue Jan 22 17:43:37 2019 +0000
>>>>>>
>>>>>>                         [DEBUGINFO, NVPTX] Enable support for the
>>>>>>                     debug info on NVPTX target.
>>>>>>
>>>>>>                         Summary: Enable full support for the
>>>>>>                     debug info.
>>>>>>
>>>>>>                         Reviewers: echristo
>>>>>>
>>>>>>                         Subscribers: jholewinski, aprantl,
>>>>>>                     JDevlieghere, llvm-commits
>>>>>>
>>>>>>                         Differential Revision:
>>>>>>                     https://reviews.llvm.org/D46189
>>>>>>
>>>>>>                         git-svn-id:
>>>>>>                     https://llvm.org/svn/llvm-project/llvm/trunk@351846
>>>>>>                     91177308-0d34-0410-b5e6-96231b3b80d8
>>>>>>
>>>>>>                     Thanks,
>>>>>>                     Char
>>>>>>
>>>>>>                     在 2019-01-23 07:59:12,"Alexey Bataev"
>>>>>>                     <a.bataev at outlook.com> 写道:
>>>>>>
>>>>>>                         Hi Char, I don't know how often it is
>>>>>>                         updated, but most probably it is already
>>>>>>                         updated.
>>>>>>
>>>>>>                         Best regards,
>>>>>>                         Alexey Bataev
>>>>>>
>>>>>>                         22 янв. 2019 г., в 17:46, treinz
>>>>>>                         <treinz at 163.com <mailto:treinz at 163.com>>
>>>>>>                         написал(а):
>>>>>>
>>>>>>>
>>>>>>>                         Hi Alexey,
>>>>>>>
>>>>>>>                         Thank you for letting me know. Can I
>>>>>>>                         assume the the github mirror is bumped
>>>>>>>                         to 9.0 and should contain the commit you
>>>>>>>                         mentioned? Just want to make sure I'm
>>>>>>>                         looking at the right repo.
>>>>>>>
>>>>>>>                         Thanks,
>>>>>>>                         Char
>>>>>>>
>>>>>>>
>>>>>>>                         在 2019-01-23 01:46:44,"Alexey Bataev"
>>>>>>>                         <a.bataev at outlook.com
>>>>>>>                         <mailto:a.bataev at outlook.com>> 写道:
>>>>>>>
>>>>>>>                             Hi, debug info for the NVPTX is
>>>>>>>                             committed. It is not a part of 8.0
>>>>>>>                             RC1, unfortunately, only in 9.0 trunk.
>>>>>>>
>>>>>>>                             -------------
>>>>>>>                             Best regards,
>>>>>>>                             Alexey Bataev
>>>>>>>
>>>>>>>                             14.12.2018 17:08, Alexey Bataev пишет:
>>>>>>>>                             Actually, we need to commit just 2
>>>>>>>>                             more patches to enable basic debug
>>>>>>>>                             info support for NVPTX. So, I hope,
>>>>>>>>                             it is going to be the part of the
>>>>>>>>                             next 8.0 release. It won't be
>>>>>>>>                             backported to 7.0 definitely.
>>>>>>>>                             Sure, I will let you know when the
>>>>>>>>                             patches are committed to the trunk,
>>>>>>>>                             no problems.
>>>>>>>>
>>>>>>>>                             Best regards,
>>>>>>>>                             Alexey Bataev
>>>>>>>>
>>>>>>>>                             14 дек. 2018 г., в 16:55, treinz
>>>>>>>>                             <treinz at 163.com
>>>>>>>>                             <mailto:treinz at 163.com>> написал(а):
>>>>>>>>
>>>>>>>>>                             Are you planning to release this
>>>>>>>>>                             as soon as it's ready or you want
>>>>>>>>>                             to make it into a major release?
>>>>>>>>>                             Is it possible to let me know
>>>>>>>>>                             (maybe by replying to this thread)
>>>>>>>>>                             once the code is ready? I know
>>>>>>>>>                             sometimes it takes a while to get
>>>>>>>>>                             things in the major release. I
>>>>>>>>>                             greatly appreciate your work on this!
>>>>>>>>>
>>>>>>>>>                             Thanks,
>>>>>>>>>                             Char
>>>>>>>>>
>>>>>>>>>                             在 2018-12-15 05:19:50,"Alexey
>>>>>>>>>                             Bataev" <a.bataev at outlook.com
>>>>>>>>>                             <mailto:a.bataev at outlook.com>> 写道:
>>>>>>>>>
>>>>>>>>>                                 Hi Char, sorry, you need to
>>>>>>>>>                                 wait a little bit. It is
>>>>>>>>>                                 almost ready, but not yet. For
>>>>>>>>>                                 now, use nvcc if you need
>>>>>>>>>                                 debug info for Cuda.
>>>>>>>>>
>>>>>>>>>                                 -------------
>>>>>>>>>                                 Best regards,
>>>>>>>>>                                 Alexey Bataev
>>>>>>>>>
>>>>>>>>>                                 14.12.2018 14:33, treinz пишет:
>>>>>>>>>>                                 Hi Alex, Eric and Valentin,
>>>>>>>>>>
>>>>>>>>>>                                 Thanks for the information. I
>>>>>>>>>>                                 don't mean to push this but
>>>>>>>>>>                                 I'm in desperate need of
>>>>>>>>>>                                 debugging some cuda code. I'm
>>>>>>>>>>                                 not familiar with the llvm
>>>>>>>>>>                                 internal but it sounds like
>>>>>>>>>>                                 there's at least line info
>>>>>>>>>>                                 now, right? If so, can you
>>>>>>>>>>                                 point me to a branch of llvm
>>>>>>>>>>                                 that can help tracing the bug
>>>>>>>>>>                                 down to certain line of code.
>>>>>>>>>>                                 I believe my bug is simply a
>>>>>>>>>>                                 write/read out of array boundary.
>>>>>>>>>>
>>>>>>>>>>                                 Thanks,
>>>>>>>>>>                                 Char
>>>>>>>>>>
>>>>>>>>>>                                 在 2018-12-05 07:15:28,"Alexey
>>>>>>>>>>                                 Bataev"
>>>>>>>>>>                                 <a.bataev at hotmail.com> 写道:
>>>>>>>>>>
>>>>>>>>>>                                     Hi, yes, these patches
>>>>>>>>>>                                     are required to have tne
>>>>>>>>>>                                     basic debug info support.
>>>>>>>>>>                                     At least 2 more patches
>>>>>>>>>>                                     are required to be able
>>>>>>>>>>                                     to get values of the
>>>>>>>>>>                                     variables without
>>>>>>>>>>                                     additional manual data
>>>>>>>>>>                                     type casting in cuda-gdb. 
>>>>>>>>>>
>>>>>>>>>>                                     Best regards,
>>>>>>>>>>                                     Alexey Bataev
>>>>>>>>>>
>>>>>>>>>>                                     4 дек. 2018 г., в 18:06,
>>>>>>>>>>                                     Eric Christopher
>>>>>>>>>>                                     <echristo at gmail.com
>>>>>>>>>>                                     <mailto:echristo at gmail.com>>
>>>>>>>>>>                                     написал(а):
>>>>>>>>>>
>>>>>>>>>>>                                     Adding Alexey here who
>>>>>>>>>>>                                     has been driving this
>>>>>>>>>>>                                     effort in llvm.
>>>>>>>>>>>
>>>>>>>>>>>                                     There are about 5
>>>>>>>>>>>                                     patches waiting on my
>>>>>>>>>>>                                     review:
>>>>>>>>>>>
>>>>>>>>>>>                                        -:
>>>>>>>>>>>                                     https://reviews.llvm.org/D54320
>>>>>>>>>>>                                        -:
>>>>>>>>>>>                                     https://reviews.llvm.org/D46189
>>>>>>>>>>>                                        -:
>>>>>>>>>>>                                     https://reviews.llvm.org/D51554
>>>>>>>>>>>                                        -:
>>>>>>>>>>>                                     https://reviews.llvm.org/D46061
>>>>>>>>>>>                                        -:
>>>>>>>>>>>                                     https://reviews.llvm.org/D45784
>>>>>>>>>>>
>>>>>>>>>>>                                     After which I think
>>>>>>>>>>>                                     we're good.
>>>>>>>>>>>
>>>>>>>>>>>                                     -eric
>>>>>>>>>>>
>>>>>>>>>>>                                     On Mon, Dec 3, 2018 at
>>>>>>>>>>>                                     6:29 PM Valentin Churavy
>>>>>>>>>>>                                     via llvm-dev
>>>>>>>>>>>                                     <llvm-dev at lists.llvm.org
>>>>>>>>>>>                                     <mailto:llvm-dev at lists.llvm.org>>
>>>>>>>>>>>                                     wrote:
>>>>>>>>>>>
>>>>>>>>>>>                                         AFAIK there is work
>>>>>>>>>>>                                         under way from IBM
>>>>>>>>>>>                                         (couple of PRs
>>>>>>>>>>>                                         open), but yes Clang
>>>>>>>>>>>                                         7.0 doesn't produce
>>>>>>>>>>>                                         the necessary
>>>>>>>>>>>                                         information.
>>>>>>>>>>>
>>>>>>>>>>>                                         -V
>>>>>>>>>>>
>>>>>>>>>>>                                         On Fri, Nov 30,
>>>>>>>>>>>                                         2018, 14:58 treinz
>>>>>>>>>>>                                         via llvm-dev
>>>>>>>>>>>                                         <llvm-dev at lists.llvm.org
>>>>>>>>>>>                                         <mailto:llvm-dev at lists.llvm.org>
>>>>>>>>>>>                                         wrote:
>>>>>>>>>>>
>>>>>>>>>>>                                             Hi all,
>>>>>>>>>>>                                             I found this
>>>>>>>>>>>                                             http://lists.llvm.org/pipermail/llvm-dev/2017-November/118871.html
>>>>>>>>>>>                                             when googling
>>>>>>>>>>>                                             about compiling
>>>>>>>>>>>                                             CUDA code using
>>>>>>>>>>>                                             llvm. Is it
>>>>>>>>>>>                                             still the case
>>>>>>>>>>>                                             that one can't
>>>>>>>>>>>                                             step into CUDA
>>>>>>>>>>>                                             kernel code
>>>>>>>>>>>                                             compiled by llvm
>>>>>>>>>>>                                             in cuda-gdb? I'm
>>>>>>>>>>>                                             using clang 7.0.
>>>>>>>>>>>
>>>>>>>>>>>                                             Thanks,
>>>>>>>>>>>                                             Char
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>                                              
>>>>>>>>>>>
>>>>>>>>>>>                                             _______________________________________________
>>>>>>>>>>>                                             LLVM Developers
>>>>>>>>>>>                                             mailing list
>>>>>>>>>>>                                             llvm-dev at lists.llvm.org
>>>>>>>>>>>                                             <mailto:llvm-dev at lists.llvm.org>
>>>>>>>>>>>                                             http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>>>>>>>>>>
>>>>>>>>>>>                                         _______________________________________________
>>>>>>>>>>>                                         LLVM Developers
>>>>>>>>>>>                                         mailing list
>>>>>>>>>>>                                         llvm-dev at lists.llvm.org
>>>>>>>>>>>                                         <mailto:llvm-dev at lists.llvm.org>
>>>>>>>>>>>                                         http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>                                  
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>                              
>>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>                          
>>>>>>>
>>>>>>
>>>>>>
>>>>>>                      
>>>>>>
>>>>>
>>>>>
>>>>>                  
>>>>>
>>>>
>>>>
>>>>              
>>>>
>>>>             <bugreport.tar.bz2>
>>>
>>>
>>>
>>>          
>>>
>>
>>
>>      
>>
>
>
>  
>
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