[LLVMdev] cross compiling to sparc with llvm

[Duncan Sands]

Hi Tarun,

> I'm trying to use llvm/clang to cross compile to sparcv9.  The following works
> with a -march=sparc, but yields errors for sparcv9.  Are there some other flags
> that need to be specified?
>
> Thanks,
> Tarun
>
>  > clang -m64 -emit-llvm test.c -c -o test.bc

this is not the right way to cross-compile because all headers, macros etc will
be for your host machine (eg: endianness, size of integer types, inline asm and
so on) not for the target machine.

Ciao, Duncan.

PS: Hopefully a clanger will explain the right way to cross-compile.

>  > llc -march=sparcv9 test.bc -o hello.s
> ExpandIntegerResult #0: 0x8a6c478: i64 = GlobalAddress<[4 x i8]* @.str> 0
> [ORD=1] [ID=0]
>
> Do not know how to expand the result of this operator!
> UNREACHABLE executed at
> ~/llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp:947!
> 0 libLLVM-2.8svn.so <http://libLLVM-2.8svn.so> 0xf6f82ef8
> 1 libLLVM-2.8svn.so <http://libLLVM-2.8svn.so> 0xf6f82d90
> 2                    0xf776c400 __kernel_sigreturn + 0
> 3  libc.so.6         0xf5a1cd52 abort + 386
> 4 libLLVM-2.8svn.so <http://libLLVM-2.8svn.so> 0xf6f56ee9
> 5 libLLVM-2.8svn.so <http://libLLVM-2.8svn.so> 0xf6e43cf2
> 6 libLLVM-2.8svn.so <http://libLLVM-2.8svn.so> 0xf6e5206a
> 7 libLLVM-2.8svn.so <http://libLLVM-2.8svn.so> 0xf6e5615a
> llvm::SelectionDAG::LegalizeTypes() + 68
> 8 libLLVM-2.8svn.so <http://libLLVM-2.8svn.so> 0xf6ef3a58
> llvm::SelectionDAGISel::CodeGenAndEmitDAG() + 1022
> 9 libLLVM-2.8svn.so <http://libLLVM-2.8svn.so> 0xf6ef312f
> llvm::SelectionDAGISel::SelectBasicBlock(llvm::ilist_iterator<llvm::Instruction
> const>, llvm::ilist_iterator<llvm::Instruction const>, bool&) + 219
> 10 libLLVM-2.8svn.so <http://libLLVM-2.8svn.so> 0xf6ef4f8a
> llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) + 1476
> 11 libLLVM-2.8svn.so <http://libLLVM-2.8svn.so> 0xf6ef2874
> llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) + 600
> 12 libLLVM-2.8svn.so <http://libLLVM-2.8svn.so> 0xf691cae1
> llvm::MachineFunctionPass::runOnFunction(llvm::Function&) + 87
> 13 libLLVM-2.8svn.so <http://libLLVM-2.8svn.so> 0xf6af88b1
> llvm::FPPassManager::runOnFunction(llvm::Function&) + 313
> 14 libLLVM-2.8svn.so <http://libLLVM-2.8svn.so> 0xf6af8a6b
> llvm::FPPassManager::runOnModule(llvm::Module&) + 109
> 15 libLLVM-2.8svn.so <http://libLLVM-2.8svn.so> 0xf6af8d56
> llvm::MPPassManager::runOnModule(llvm::Module&) + 400
> 16 libLLVM-2.8svn.so <http://libLLVM-2.8svn.so> 0xf6af920c
> llvm::PassManagerImpl::run(llvm::Module&) + 122
> 17 libLLVM-2.8svn.so <http://libLLVM-2.8svn.so> 0xf6af96fd
> llvm::PassManager::run(llvm::Module&) + 39
> 18 llc               0x0805894a main + 2268
> 19 libc.so.6         0xf5a05bd6 __libc_start_main + 230
> 20 llc               0x08057761
> Stack dump:
> 0.Program arguments: llc -march=sparcv9 test.bc -o hello.s
> 1.Running pass 'Function Pass Manager' on module 'test.bc'.
> 2.Running pass 'SPARC DAG->DAG Pattern Instruction Selection' on function '@main'
> Aborted
>
>
>
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