Re: [llvm-dev] OpenJDK8 failed to work after compiled by LLVM 8 for X86

Hi Zhengyu, Thanks for your patch!  I will backport it to jdk8u and test it for X86 and mips64el. Thanks, Leslie Zhai 在 2018年09月12日 20:58, Zhengyu Gu 写道: Probably should also backport the followup RFE: https://bugs.openjdk.java.net/browse/JDK-8206183 Thanks, -Zhengyu On 09/11/2018 10:5

Re: [llvm-dev] OpenJDK8 failed to work after compiled by LLVM 8 for X86

Hi Leslie, The problem really lies in the OpenJDK code, as it is attempting to write to a const object. If this seems to work with certain compiler(s) and optimization settings, it is just luck. :-) Here is a reduced example, which shows the issue: ==

Re: [llvm-dev] OpenJDK8 failed to work after compiled by LLVM 8 for X86

Hi Leslie, This is likely the same problem as was reported in https://bugs.freebsd.org/225054#c8, and fixed by the following patch: https://svnweb.freebsd.org/ports/head/java/openjdk8/files/patch-hotspot_src_share_vm_services_memTracker.cpp?view=markup&pathrev=459368 Can you please try that out

Re: [llvm-dev] OpenJDK8 failed to work after compiled by LLVM 8 for X86

Probably should also backport the followup RFE: https://bugs.openjdk.java.net/browse/JDK-8206183 Thanks, -Zhengyu On 09/11/2018 10:58 PM, David Holmes wrote: Or to be a little less obscure, this is a known issue and you should look into backporting: https://bugs.openjdk.java.net/browse/JDK-

Re: [llvm-dev] OpenJDK8 failed to work after compiled by LLVM 8 for X86

On 12/09/2018 1:18 PM, Leslie Zhai wrote: Hi, Thanks for your kind response! 在 2018年09月12日 10:58, David Holmes 写道: Or to be a little less obscure, this is a known issue and you should look into backporting: https://bugs.openjdk.java.net/browse/JDK-8205965 Already known :) http://mail.openj

Re: [llvm-dev] OpenJDK8 failed to work after compiled by LLVM 8 for X86

Hi, Thanks for your kind response! 在 2018年09月12日 10:58, David Holmes 写道: Or to be a little less obscure, this is a known issue and you should look into backporting: https://bugs.openjdk.java.net/browse/JDK-8205965 Already known :) http://mail.openjdk.java.net/pipermail/build-dev/2018-Septem

Re: [llvm-dev] OpenJDK8 failed to work after compiled by LLVM 8 for X86

Or to be a little less obscure, this is a known issue and you should look into backporting: https://bugs.openjdk.java.net/browse/JDK-8205965 David On 12/09/2018 5:03 AM, Martin Buchholz wrote: https://openjdk.markmail.org/thread/rwfcd6df6vhzli5m

Re: [llvm-dev] OpenJDK8 failed to work after compiled by LLVM 8 for X86

https://openjdk.markmail.org/thread/rwfcd6df6vhzli5m

Re: [llvm-dev] OpenJDK8 failed to work after compiled by LLVM 8 for X86

Hi Dimitry, Thank you so much for the reduced testcase!  It is able to reproduce after compiled with clang-8 optimized for X86: $ clang++ -O3 -S -c JDK-8205969.cpp -o JDK-8205969-opt-8.0.s $ clang++ -O3 -c JDK-8205969.cpp -o JDK-8205969-opt-8.0.o $ clang++ -o JDK-8205969-opt-8.0.out JDK-820596

Re: [llvm-dev] OpenJDK8 failed to work after compiled by LLVM 8 for X86

Hi Dimitry, Thanks for your kind response! Thanks for the commit message of Jung's patch, I found that the bug had been fixed in OpenJDK 12 by Zhengyu https://bugs.openjdk.java.net/browse/JDK-8205965 But only backported to 11. So Jung could backport it for OpenJDK 8, thanks a lot! But I