An error:Pass 'Runtime Evaluation' is not initialized

Hi,all:

I am a new at writing LLVM PASS, i write a pass like this :

using namespace llvm;

namespace {
class RuntimeEval : public ModulePass {
public:
static char ID; // Pass identification, replacement for typeid

RuntimeEval() : ModulePass(ID) {
}

virtual bool runOnModule(Module &M) {
return false;
}
};
}

char HSASupportedRuntimeEval::ID = 0;
static RegisterPass X(“Eval”, “Runti! me Evaluation”);

it can be compiled successful, but when i run it with command: ‘./Release+Asserts/bin/opt -load ./Release+Asserts/lib/LLVMRuntimeEval.so -Eval < code2.bc’,

i meet an error:

Pass ‘HSA Supported Runtime Evaluation’ is not initialized.
Verify if there is a pass dependency cycle.
Required Passes:
opt: /home/ccwang/software/LLVM/LLVM3.2/llvm-3.2.src/lib/VMCore/PassManager.cpp:616: void llvm::PMTopLevelManager::schedulePass(llvm::Pass*): Assertion `PI && “Expected req! uired passes to be initialized”’ failed.
0 opt 0x00000000011a649f
1 opt 0x00000000011a69c9
2 libpthread.so.0 0x00007fc102e21cb0
3 libc.so.6 0x00007fc102073425 gsignal + 53
4 libc.so.6 0x00007fc102076b8b abort + 379
5 libc.so.6 0x00007fc10206c0ee
6 libc.so.6 0x00007fc10206c192
7 opt 0x000000000113c423 llvm::PMTopLevelManager::schedulePass(llvm::Pass*) + 1907
8 opt 0x000000000055253a main + 2874
9 libc.so.6 0x00007fc10205e76d __libc_start_main + 237
10 opt 0x00000000005687dd
Stack dump:
0. Program arguments: ./Release+Asserts/bin/opt -load ./Release+Asserts/lib/LLVMHRuntimeEval.so -Eval
Aborted (core dumped)

If anyone can give me some advices about it? thanks!

regards,
wang