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diff ProblemsIdeas.txt @ 3233:e3d3fd5b638a

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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>
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?