llvm dev - Oct 2011 - [LLVMdev] CallGraphSCC

Hello,

  I want to access the instructions via:
CallGraph->CallGraphNode->Function->BB->Instruction

Is this possible?

Right now, I'm iterating over the CallGraph Nodes via CallGraphSCC:iterator,
but then I have to cast that iterator to a CallGraphNode const and then when
I call  CallGraphNode->getFunction, it returns a valid function but seg
faults on function->getName()?
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20111019/408766ae/attachment.html>

Hi Ryan,
>    I want to access the instructions via:
> CallGraph->CallGraphNode->Function->BB->Instruction
>
> Is this possible?
>
> Right now, I'm iterating over the CallGraph Nodes via
CallGraphSCC:iterator, but
> then I have to cast that iterator to a CallGraphNode const
you should be able to use (*I)->getFunction()

  and then when I call
> CallGraphNode->getFunction, it returns a valid function but seg faults
on
> function->getName()?
All functions defined outside the module are represented by the null pointer.
So if for example you declare a function foo, but it has no body, and call it
from somewhere in your module, then foo is considered part of the "external
SCC"; when you do getFunction() for this SCC node you will get a null
pointer.

Ciao, Duncan.