llvm dev - Oct 2015 - Getting segmentation Fault while inserting cloned instrution in the original instruction before the original instrctuion

BB->getInstList().insert(&(*i),&(*j) );
here j is iterator of cloned instruction and i  is iterator of original
instruction.Since i am doing it on per basic block branch inclusion may not
be problem.

Thanx
PRiyanka
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On 10/16/15 5:25 AM, Priyanka Bamne via llvm-dev wrote:
> BB->getInstList().insert(&(*i),&(*j) );
> here j is iterator of cloned instruction and i  is iterator of 
> original instruction.Since i am doing it on per basic block branch 
> inclusion may not be problem.
There's too little detail here to be helpful.  If you haven't already, 
make sure you're using a Debug+Asserts build of LLVM; the asserts in 
LLVM may provide insight into the problem.

A stack trace might also help.

Make sure you're not cloning the TerminatorInst at the end of the basic 
block (a basic block should only have one TerminatorInst), and check 
that your insertion point is valid.

Regards,

John Criswell
>
> Thanx
> PRiyanka
>
>
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-- 
John Criswell
Assistant Professor
Department of Computer Science, University of Rochester
http://www.cs.rochester.edu/u/criswell

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