llvm dev - Jul 2011 - [LLVMdev] Selfhost LLVM and Clang on ARM

Hi, all

  I am trying to selfhost LLVM and Clanf on ARM. Hopefully
doing this can reveal what version of GCC is broken. But I
have a concern about the following message while building
LLVM and Clang by using clang (selfhost build).

---
llvm[1]: Compiling DeltaAlgorithm.cpp for Debug build
/tmp/cc-DqWGS1.s: Assembler messages:
/tmp/cc-DqWGS1.s:8963: Rd and Rm should be different in mul
llvm[1]: Compiling PluginLoader.cpp for Debug build
/tmp/cc-wpJpuX.s: Assembler messages:
/tmp/cc-wpJpuX.s:724: rdhi, rdlo and rm must all be different
/tmp/cc-wpJpuX.s:728: Rd and Rm should be different in mla
---

  What does those message mean? Thanks!

Regards,
chenwj

-- 
Wei-Ren Chen (陳韋任)
Computer Systems Lab, Institute of Information Science,
Academia Sinica, Taiwan (R.O.C.)
Tel:886-2-2788-3799 #1667

On 31 July 2011 06:16, 陳韋任 <chenwj at iis.sinica.edu.tw>
wrote:
>  What does those message mean? Thanks!
Hi chenwj,

See:

http://gcc.gnu.org/ml/gcc-help/2004-03/msg00085.html
http://llvm.org/bugs/show_bug.cgi?id=2313

etc.

They are now warnings and you should be fine. But ultimately, those
restrictions could be implemented to avoid the warnings.

cheers,
--renato