[llvm] Aborted (core dumped) when using clone

[Danna bib]

Hi all,

I have problem with working by Instruction class of LLVM. I wrote the
following pass in order to make a copy of binary instructions. But, when I
run mypass with opt I face with an aborted error. I also got the same error
when I used eraseFromParent() function. It would be a great help if you
tell my where is my problem.

for (Function::iterator b = F.begin(), be = F.end(); b != be; ++b) {
        for (BasicBlock::iterator i = b->begin(), ie = b->end(); i != ie;
++i) {
          if (i->isBinaryOp()) {
                errs() << "This instruction is BinaryO, and I want to copy
it! " << '\n';
                 Instruction *copyinst= i;
                 Instruction *IA = &* copyinst->clone();
                // i->eraseFromParent();
                }
              }
        }

*The output:*
This instruction is BinaryO, and I want to copy it!
Instruction referencing instruction not embedded in a basic block!
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %.backedge ]
  <badref> = add i64 %indvars.iv, 1
Broken module found, compilation aborted!
0  libLLVM-3.4.so.1 0x00007f5c1bc1fd82
llvm::sys::PrintStackTrace(_IO_FILE*) + 34
1  libLLVM-3.4.so.1 0x00007f5c1bc1fb6c
2  libc.so.6        0x00007f5c1a69ffb0
3  libc.so.6        0x00007f5c1a69ff39 gsignal + 57
4  libc.so.6        0x00007f5c1a6a3348 abort + 328
5  libLLVM-3.4.so.1 0x00007f5c1b610871
6  libLLVM-3.4.so.1 0x00007f5c1b619933
7  libLLVM-3.4.so.1 0x00007f5c1b5f0d77
llvm::FPPassManager::runOnFunction(llvm::Function&) + 471
8  libLLVM-3.4.so.1 0x00007f5c1b5f0e0b
llvm::FPPassManager::runOnModule(llvm::Module&) + 43
9  libLLVM-3.4.so.1 0x00007f5c1b5f32c5
llvm::legacy::PassManagerImpl::run(llvm::Module&) + 693
10 opt-3.4          0x0000000000412c8d main + 2461
11 libc.so.6        0x00007f5c1a68aed5 __libc_start_main + 245
12 opt-3.4          0x0000000000413b40
Stack dump:
0.    Program arguments: opt-3.4 -load ../../../Debug+Asserts/lib/Mypass.so
-mypass
1.    Running pass 'Function Pass Manager' on module '<stdin>'.
2.    Running pass 'Module Verifier' on function '@main'
Aborted (core dumped)

Thank you,
Danna
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