llvm dev - Nov 2012 - [LLVMdev] MIPs backend generates wrong reloc info for static data

Hi all,

I use llvm-clang with a MIPS target, and it seems that the backend generates
wrong reloc info.
I attach a very simple test case.
* Compile test.c with 'clang -internal-as -g'
* use mips-elf-objdump -S to get the generate assembly code (see test.lst)
* use mips-elf-readelf -a to look for relocation info (see test.readelf)

All relocations for static data are 0000 ?!

I did not managed to locate the problem in the code, but I would be glad to help
if someone can narrow the search area in the code base.

Thanks for you help,

--
Fred




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Hi Frédéric, I believe there have been some recent patches related to
MIPS relocations. If you have the time, could you try to reproduce
this problem with top-of-tree LLVM and clang?

Thanks,

-- Sean Silva

Could you file a PR, with the exact command (including options such as
-target, etc.) to reproduce this problem?

On Wed, Nov 28, 2012 at 9:20 AM, HEITZMANN Frédéric 218168 <
frederic.heitzmann at cea.fr> wrote:
> Hi all,
>
> I use llvm-clang with a MIPS target, and it seems that the backend
> generates wrong reloc info.
> I attach a very simple test case.
> * Compile test.c with 'clang -internal-as -g'
> * use mips-elf-objdump -S to get the generate assembly code (see test.lst)
> * use mips-elf-readelf -a to look for relocation info (see test.readelf)
>
> All relocations for static data are 0000 ?!
>
> I did not managed to locate the problem in the code, but I would be glad
> to help if someone can narrow the search area in the code base.
>
> Thanks for you help,
>
> --
> Fred
>
>
>
>
>
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>
>
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