Sjoerd Meijer 33b2c88fa8 [LoopFlatten] Widen IV, support ZExt. ...

I disabled the widening in fa5cb4b because it run in an assert, which was
related to replacing values with different types. I forgot that an extend could
also be a zero-extend, which I have added now. This means that the approach now
is to create and insert a trunc value of the outerloop for each user, and use
that to replace IV values.

Differential Revision: https://reviews.llvm.org/D91690

2020-11-23 08:57:19 +00:00

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