2 Commits

Author	SHA1	Message	Date
Dan Gohman	0dc2b769b0	When printing a SCEVUnknown with pointer type, don't print an ... artificial "ptrtoint", as it tends to clutter up complicated expressions. The cast operators now print both source and destination types, which is usually sufficient. llvm-svn: 70554	2009-05-01 17:02:22 +00:00
Dan Gohman	3c9f4f765c	Extend ScalarEvolution's getBackedgeTakenCount to be able to ... compute an upper-bound value for the trip count, in addition to the actual trip count. Use this to allow getZeroExtendExpr and getSignExtendExpr to fold casts in more cases. This may eventually morph into a more general value-range analysis capability; there are certainly plenty of places where more complete value-range information would allow more folding. llvm-svn: 70509	2009-04-30 20:47:05 +00:00