[polly] r270409 - [FIX] Let ScalarEvolution forget hoisted values

[Tobias Grosser via llvm-commits]

On 05/23/2016 11:02 AM, Johannes Doerfert via llvm-commits wrote:
> Author: jdoerfert
> Date: Mon May 23 04:02:54 2016
> New Revision: 270409
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=270409&view=rev
> Log:
> [FIX] Let ScalarEvolution forget hoisted values
> 
>   We have to rethink the handling of escaping values in order to make
>   this kind of "fixes" go away.

CCing Utpal.

This is one of the reasons why a function level Polly that first builds
up all scops and then code-generates them one by one is problematic. If
this value is now used in the other SCoP, we may (or may not?) get into
trouble. As you are working towards this goal, it will be good to keep
this in mind.

Best,
Tobias