commit 38145736e8f49bb1f39330130c476799e36527d3
author patacca <patacca@autistici.org> Wed Jul 07 16:26:44 2021 +0200
committer Copybara-Service <copybara-worker@google.com> Thu Jul 15 20:02:41 2021 -0700
tree 1b6bd105b33369144f651c64f699d8aabe8467f5
parent c1455fad26e8fab993f9c138da3d51c3e94a4866

[Polly][Isl] Use isl::union_set::unite() instead of isl::union_set::add_set(). NFC

This is part of an effort to reduce the differences between the custom C++ bindings used right now by polly in `lib/External/isl/include/isl/isl-noxceptions.h` and the official isl C++ interface.

Changes made:
 - Use `isl::union_set::unite()` instead of `isl::union_set::add_set()`
 - `isl-noexceptions.h` has been generated by this https://github.com/patacca/isl/commit/390c44982b5cee7eb43f8f7a80e185e6d21466b2

Depends on D104994

Reviewed By: Meinersbur

Differential Revision: https://reviews.llvm.org/D105444

GitOrigin-RevId: b55aedd0b8cf6dbd6d3d08e1a9a40fd73eb6b2dc