[LLVMdev] Compiling LLVM on SPARC

[Patrick Alexander Simmons]

LLVM isn't really supported on SPARC, so, even if you get it to compile, 
it might not work correctly.  However, if you want to keep trying, you 
could check out DragonEgg: [http://dragonegg.llvm.org/].  If you can get 
DragonEgg to work, you won't need LLVM-GCC.

Also, you don't mention what OS you're using, but, if it's not Solaris, 
it /really/ probably won't work.

--Patrick

Stephen Kou wrote:
> Hello all,
>
> I've been trying to compile LLVM and LLVM-GCC on the SPARC 
> architecture, but I've been running into lots of issues:
>
> LLVM 2.5 works, but 2.6 does not -- gcc can't even parse the triple.h 
> file needed in commandline.cpp.  For 2.5, there's a compile error for 
> llvm-gcc for that version.  I've been compiling with gcc 4.5.0, and 
> have also tried 4.4.3.
>
> I've turned to trying to build the trunk version to see if I get 
> better results.  I do get further (since LLVM itself won't even 
> compile on 2.5 -- it compiles fine on trunk).  LLVM-GCC also compiles 
> farther than any previous version for trunk.  However, eventually, I 
> encounter the following assertion failure in llvm:
>
> Assertion failed: Offset >= 0, file 
> /space/home/skou/llvm-trunk/lib/Transforms/InstCombine/InstructionCombining.cpp, 
> line 387
> ../../../../libstdc++-v3/libsupc++/unwind-cxx.h: In function 
> '__cxxabiv1::__cxa_exception* 
> __cxxabiv1::__get_exception_header_from_ue(_Unwind_Exception*)':
> ../../../../libstdc++-v3/libsupc++/unwind-cxx.h:171: internal compiler 
> error: Abort
>
> I checked, and the "Offset" variable at this point in the source file 
> (InstructionCombining.cpp:387), is -23.  The offending assert looks 
> like the following:
>
>     // Handle hosts where % returns negative instead of values 
> [0..TySize).
>     if (Offset < 0) {
>       --FirstIdx;
>       Offset += TySize;
>       fprintf(stderr, "ERROR: %d", Offset); // << endl;
>       assert(Offset >= 0);
>     }
>
> Is anyone able to help me, or have been able to successfully compile 
> LLVM + LLVM-GCC on the SPARC platform?  If so, what version of the 
> toolchain did you use?
>
> Thank you for the help,
> stephen
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