[llvm-dev] High memory use and LVI/Correlated Value Propagation

Joerg Sonnenberger via llvm-dev llvm-dev at lists.llvm.org
Thu Jan 14 14:49:37 PST 2016


On Thu, Jan 14, 2016 at 10:46:21PM +0100, Joerg Sonnenberger via llvm-dev wrote:
> On Thu, Jan 14, 2016 at 01:26:02PM -0800, Philip Reames wrote:
> > If you have found a case that involves many steps for each variable in the
> > lattice, one principled fix would be to bound the number of constant range
> > refinements allowed.  e.g. If you updated the constant range 5 times, drop
> > to overdefined.
> 
> I'll add the problematic files I have to 10584.

Done. With the recent changes, it looks like three of the five cases are
just barely failing and one of them is still off the 2GB barrier by a
lot.

Joerg


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