[LLVMdev] Compiling MiBench to MIPS

[Ronaldo Ferreira]

Hi,

I'm trying to compile the basicmath benchmark from the MiBench suite to the
MIPS target. However, when I call llc with the linked llvm bitcode, the
compilation gives an error apparently related to some unsupported feature.
The same error occurs when I select -march=arm, but it works for X86. In
details:

Commands I used to compile basicmath:

clang -static -O3 basicmath_small.c rad2deg.c cubic.c isqrt.c -c -emit-llvm
llvm-link basicmath_small.bc rad2deg.bc cubic.bc isqrt.bc -o basicmath.bc
llc basicmath.bc -march=mipsel -relocation-model=static -o basicmath

The error is:

llc: /home/ronaldo/llvm/include/llvm/Target/TargetLowering.h:302: virtual
const llvm::TargetRegisterClass*
llvm::TargetLoweringBase::getRegClassFor(llvm::MVT) const: Assertion `RC &&
"This value type is not natively supported!"' failed.
0  llc             0x0000000001557f2d llvm::sys::PrintStackTrace(_IO_FILE*)
+ 38
1  llc             0x00000000015581aa
2  llc             0x0000000001557b50
3  libpthread.so.0 0x00007f2d54c26340
4  libc.so.6       0x00007f2d53e62f79 gsignal + 57
5  libc.so.6       0x00007f2d53e66388 abort + 328
6  libc.so.6       0x00007f2d53e5be36
7  libc.so.6       0x00007f2d53e5bee2
8  llc             0x00000000009be707
9  llc             0x0000000000cfed54
llvm::FunctionLoweringInfo::CreateReg(llvm::MVT) + 64
10 llc             0x0000000000cfeebd
llvm::FunctionLoweringInfo::CreateRegs(llvm::Type*) + 337
11 llc             0x0000000000cf33fa
12 llc             0x0000000000cfe4cb
llvm::FunctionLoweringInfo::set(llvm::Function const&,
llvm::MachineFunction&, llvm::SelectionDAG*) + 2033
13 llc             0x0000000000dadb1d
llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) + 921
14 llc             0x0000000000b01037
llvm::MipsDAGToDAGISel::runOnMachineFunction(llvm::MachineFunction&) + 35
15 llc             0x0000000000b2a9a1
llvm::MipsSEDAGToDAGISel::runOnMachineFunction(llvm::MachineFunction&) + 65
16 llc             0x0000000000fcd6ed
llvm::MachineFunctionPass::runOnFunction(llvm::Function&) + 95
17 llc             0x00000000014d0825
llvm::FPPassManager::runOnFunction(llvm::Function&) + 291
18 llc             0x00000000014d09d0
llvm::FPPassManager::runOnModule(llvm::Module&) + 84
19 llc             0x00000000014d0cee
20 llc             0x00000000014d13b8
llvm::legacy::PassManagerImpl::run(llvm::Module&) + 244
21 llc             0x00000000014d15c3
llvm::legacy::PassManager::run(llvm::Module&) + 39
22 llc             0x00000000008c4893
23 llc             0x00000000008c3ac3 main + 237
24 libc.so.6       0x00007f2d53e4dec5 __libc_start_main + 245
25 llc             0x00000000008c1589
Stack dump:
0.    Program arguments: ../../../sw/llc basicmath.bc -march=mipsel
-relocation-model=static -o basicmath
1.    Running pass 'Function Pass Manager' on module 'basicmath.bc'.
2.    Running pass 'MIPS DAG->DAG Pattern Instruction Selection' on
function '@SolveCubic'
Aborted (core dumped)


Am I missing something in the compilation?
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20140527/7ad1e9dc/attachment.html>