[Bug middle-end/36262] [4.3 Regression] Extreme memory usage of VRP compared to older versions

[rguenth at gcc dot gnu dot org]

------- Comment #12 from rguenth at gcc dot gnu dot org  2008-07-06 12:27 -------
I don't think we "used" it before either?  Still the _computing_ of niters
can be easily re-instantiated - it wasn't the expensive thing here.  But I
had the impression SCEV computes niters itself when needed, so the removal
of the upfront computation was just an "optimization".  Note that Zdenek
added it to not do this expensive thing multiple times.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36262