[LLVMdev] Unable to Split critical edges

[Afraz]

Hi,
I am having a problem while splitting the critical edges for carrying out
path profiling. Actually, I am using the function 'SplitCriticalEdge' from
the file 'BreakCriticalEdges.cpp' file but it just returns NULL pointer
while splitting to  a landing pad block. Here is the comment from the code:

 // Splitting the critical edge to a landing pad block is non-trivial.
Don't do00140   // it in this generic function.00141   if
(DestBB->isLandingPad
<http://llvm.org/docs/doxygen/html/classllvm_1_1BasicBlock.html#a3075a9eef753018bed561df31f38dc23>())
return nullptr;

Can anyone please provide a solution for breaking such critical edges?

Is there an implementation available for it?




Thanks,
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