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llvm/mlir/lib/Transforms/Vectorization
Nicolas Vasilache c6f798a976 Introduce AffineMap::compose(AffineMap)
This CL is the 2nd on the path to simplifying AffineMap composition.
This CL uses the now accepted `AffineExpr::compose(AffineMap)` to
implement `AffineMap::compose(AffineMap)`.

Implications of keeping the simplification function in
Analysis are documented where relevant.

PiperOrigin-RevId: 228276646
2019-03-29 15:04:20 -07:00
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