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htwm
2017 Aug 14
2
PHI nodes and connected ICMp
...sions does make it more difficult to
compute trip counts, SCEV has some other patterns it tries to
recognize even in cases where the relevant expressions could not be
mapped to neat SCEV add recurrences. Another example: SCEV can
compute the trip counts for strlen-like loops:
https://godbolt.org/g/hWtEWm
-- Sanjoy
2017 Aug 13
2
PHI nodes and connected ICMp
To continue this topic:
sometimes SCEV's behavior is rather controversial : for loops with i
changing as i \=2 for example, he can't figure what the type of expressions
is, but surprisingly can determine max trip count. Shouldn't it be able to
detect or not detect these parameters at the same time?
2017-08-11 15:56 GMT+02:00 Anastasiya Ruzhanskaya <
anastasiya.ruzhanskaya at