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Dan Gohman 7cac95778f Make SCEVUnknown a CallbackVH, so that it can be notified directly 
of Value deletions and RAUWs, instead of relying on ScalarEvolution's
Scalars map being notified, as that's complicated at best, and
insufficient in general.

This means SCEVUnknown needs a non-trivial destructor, so introduce
a mechanism to allow ScalarEvolution to locate all the SCEVUnknowns.

llvm-svn: 110086
 		2010-08-02 23:49:30 +00:00
..
Makefile Make SCEVUnknown a CallbackVH, so that it can be notified directly 2010-08-02 23:49:30 +00:00
ScalarEvolutionTest.cpp Make SCEVUnknown a CallbackVH, so that it can be notified directly 2010-08-02 23:49:30 +00:00