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

[Charith Mendis via llvm-dev]

(((15 + %add144.sink230.i) * (%blocksize /u %bytesoftype)) +
{%_dest,+,16}<%for.cond1.preheader.i59>)<nsw>

On Tue, Oct 4, 2016 at 2:24 PM, Friedman, Eli <efriedma at codeaurora.org>
wrote:

> 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
>
> --
> Employee of Qualcomm Innovation Center, Inc.
> Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux
> Foundation Collaborative Project
>
>


-- 
Kind regards,
Charith Mendis

Graduate Student,
CSAIL,
Massachusetts Institute of Technology
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