[llvm-dev] Getting the symbolic expression for an address calculation

[Friedman, Eli via llvm-dev]

On 10/4/2016 11:13 AM, Charith Mendis wrote:
> How do you generate a SCEVAddRecExpr from a SCEV? It tried dyn_casting 
> and it seems like that the SCEV returned by getSCEV is not a 
> SCEVAddRecExpr.

You can dyn_cast if it's actually an AddRec... but not all expressions 
can be represented as an AddRec.

SCEV has a dump() method which can be helpful for debugging.  What does 
E->dump() on the SCEV in question look like?  What does the IR look like?

-Eli

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