Mercurial > hg > truffle
diff ProblemsIdeas.txt @ 3233:e3d3fd5b638a
Canonicalize Negate(Negate(x)) for int/long remove incorrect canonicalization of FloatSub(0.0, x) to Negate(x)
author | Gilles Duboscq <gilles.duboscq@oracle.com> |
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date | Wed, 27 Jul 2011 11:53:37 +0200 |
parents | 4a6bda6cfe28 |
children | 0ffcce571d09 |
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--- a/ProblemsIdeas.txt Wed Jul 27 10:33:03 2011 +0200 +++ b/ProblemsIdeas.txt Wed Jul 27 11:53:37 2011 +0200 @@ -79,3 +79,7 @@ * Rematerialize only the nodes that were affected by GVN This will probably require something that tracks changes to the Graph, the cost of such a tracking should be evaluated + +* Hints on register pressure + + Sometimes we can make better decisions if we know the register pressure, it would be nice to have a way to know about it. Maybe we have register allocation on SSA we can somehow interact with it and try to lower the pressure in some areas on request?