commit dbf5eb8afa6e08e6caf2add67cab82ce63095452
author Michael Kruse <llvm-project@meinersbur.de> Tue Mar 16 08:50:37 2021 -0500
committer Copybara-Service <copybara-worker@google.com> Thu Mar 18 05:47:52 2021 -0700
tree 4ce32fa57a2520042bb156e13a2683dcd5e303c4
parent 60e01c79b8c783f3330191ae58f102131cc0d4e7

[Polly][Unroll] Fix unroll_double test.

We enumerated the cross product Domain x Scatter, but sorted only be the
scatter key. In case there are are multiple statement instances per
scatter value, the order between statement instances of the same loop
iteration was undefined.

Propertly enumerate and sort only by the scatter value, and group the
domains using the scatter dimension again.

Thanks to Leonard Chan for the report.

GitOrigin-RevId: f51427afb5333e5dd2eb04ea4630037667c64553