[PATCH] D45534: Add isl operator overloads for isl::pw_aff (Try II)

[Tobias Grosser via Phabricator via llvm-commits]

grosser created this revision.
grosser added reviewers: Meinersbur, bollu, sebpop.

Piecewise affine expressions have directly corresponding mathematical
operators. Introduce these operators as overloads as this makes writing
code with isl::pw_aff expressions more directly readable.

We can now write:

  A = B + C    instead of    A = B.add(C)


Repository:
  rPLO Polly

https://reviews.llvm.org/D45534

Files:
  include/polly/Support/ISLOperators.h
  lib/Support/SCEVAffinator.cpp
  unittests/Isl/IslTest.cpp

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