llvm dev - Sep 2018 - Compiling OpenJDK8 with LLVM for mips64el

Hi all,

Thanks for Aleksandar Beserminji great job:

https://reviews.llvm.org/D50437

It is not easy to reproduce the LLVMBUG-38221[1] by building OpenJDK8,  
it needs some workaround

https://raw.githubusercontent.com/xiangzhai/jdk8u-dev/master/Workaround-compile-with-llvm.patch

LLVM toolchain[2] is just able to compile OpenJDK8 for mips64el now:

http://hg.loongnix.org/

1. https://bugs.llvm.org/show_bug.cgi?id=38221#c10

2. $ clang -v
Loongson clang version 8.0.0 (git at github.com:llvm-mirror/clang.git 
56fc90882612ab774dae937ca8d997c59364f7f8) 
(git at github.com:llvm-mirror/llvm.git 
3419b04cf0c0a57577865f0d17fefb205deed048) (based on LLVM 8.0.0svn)
Target: mips64el-redhat-linux
Thread model: posix
InstalledDir: /usr/bin
Found candidate GCC installation: 
/usr/bin/../lib/gcc/mips64el-redhat-linux/4.9.3
Found candidate GCC installation: /usr/lib/gcc/mips64el-redhat-linux/4.9.3
Selected GCC installation: /usr/bin/../lib/gcc/mips64el-redhat-linux/4.9.3
Candidate multilib: .;
Selected multilib: .;

-- 

Regards,
Leslie Zhai

On 2018-09-05 06:03, Leslie Zhai wrote:
> Hi all,
>
> Thanks for Aleksandar Beserminji great job:
>
> https://reviews.llvm.org/D50437
>
> It is not easy to reproduce the LLVMBUG-38221[1] by building 
> OpenJDK8,  it needs some workaround
>
>
https://raw.githubusercontent.com/xiangzhai/jdk8u-dev/master/Workaround-compile-with-llvm.patch
>
Hi Leslie,

Great to see that this combination works as well with just so little 
tweaking!

However, since the mips64 port is not in upstream (in fact, it's 
currently not even an OpenJDK project), I think this patch better goes 
to the mips-port list.

/Magnus
>
> LLVM toolchain[2] is just able to compile OpenJDK8 for mips64el now:
>
> http://hg.loongnix.org/
>
> 1. https://bugs.llvm.org/show_bug.cgi?id=38221#c10
>
> 2. $ clang -v
> Loongson clang version 8.0.0 (git at github.com:llvm-mirror/clang.git 
> 56fc90882612ab774dae937ca8d997c59364f7f8) 
> (git at github.com:llvm-mirror/llvm.git 
> 3419b04cf0c0a57577865f0d17fefb205deed048) (based on LLVM 8.0.0svn)
> Target: mips64el-redhat-linux
> Thread model: posix
> InstalledDir: /usr/bin
> Found candidate GCC installation: 
> /usr/bin/../lib/gcc/mips64el-redhat-linux/4.9.3
> Found candidate GCC installation: 
> /usr/lib/gcc/mips64el-redhat-linux/4.9.3
> Selected GCC installation: 
> /usr/bin/../lib/gcc/mips64el-redhat-linux/4.9.3
> Candidate multilib: .;
> Selected multilib: .;
>
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Hi Magnus,

Thanks for your kind response!


在 2018年09月05日 14:40, Magnus Ihse Bursie 写道:
> On 2018-09-05 06:03, Leslie Zhai wrote:
>> Hi all,
>>
>> Thanks for Aleksandar Beserminji great job:
>>
>> https://reviews.llvm.org/D50437
>>
>> It is not easy to reproduce the LLVMBUG-38221[1] by building 
>> OpenJDK8,  it needs some workaround
>>
>>
https://raw.githubusercontent.com/xiangzhai/jdk8u-dev/master/Workaround-compile-with-llvm.patch
>>
>
> Hi Leslie,
>
> Great to see that this combination works as well with just so little 
> tweaking!
>
> However, since the mips64 port is not in upstream (in fact, it's 
> currently not even an OpenJDK project), I think this patch better goes 
> to the mips-port list.
Sorry for my poor English!  Because Aleksandar had implemented the 
missing instructions for LLVM Mips target.  And he asked me how to build 
OpenJDK8 for testing https://bugs.llvm.org/show_bug.cgi?id=38221#c9

So I just tested for him, thanks for his great job again!
>
> /Magnus
>
>>
>> LLVM toolchain[2] is just able to compile OpenJDK8 for mips64el now:
>>
>> http://hg.loongnix.org/
>>
>> 1. https://bugs.llvm.org/show_bug.cgi?id=38221#c10
>>
>> 2. $ clang -v
>> Loongson clang version 8.0.0 (git at github.com:llvm-mirror/clang.git 
>> 56fc90882612ab774dae937ca8d997c59364f7f8) 
>> (git at github.com:llvm-mirror/llvm.git 
>> 3419b04cf0c0a57577865f0d17fefb205deed048) (based on LLVM 8.0.0svn)
>> Target: mips64el-redhat-linux
>> Thread model: posix
>> InstalledDir: /usr/bin
>> Found candidate GCC installation: 
>> /usr/bin/../lib/gcc/mips64el-redhat-linux/4.9.3
>> Found candidate GCC installation: 
>> /usr/lib/gcc/mips64el-redhat-linux/4.9.3
>> Selected GCC installation: 
>> /usr/bin/../lib/gcc/mips64el-redhat-linux/4.9.3
>> Candidate multilib: .;
>> Selected multilib: .;
>>
>
-- 
Regards,
Leslie Zhai