commit 8c465c13dd734cd8fa2f881ea567e59a666edf6b
author Michael Kruse <llvm@meinersbur.de> Thu May 31 22:44:23 2018 +0000
committer Michael Kruse <llvm@meinersbur.de> Thu May 31 22:44:23 2018 +0000
tree e6b0efe241a1513e5d5fad7f1f81a8c523c03937
parent b8e73ba4dee5340740e2645788f728e0c4cdb356

[ZoneAlgo] Make ZoneAlgorithm::isNormalized out-of-quota safe.

The aosp-O3-polly-before-vectorizer-unprofitable buildbot currently
fails in ZoneAlgorithm::isNormalized, presumably because an
out-of-quota happens in that function.

Modify ZoneAlgorithm::isNormalized to return an isl::boolean such
it can report an error.

In the failing case, it was called in an assertion in ForwardOpTree.
Allow to pass the assertion in an out-of-quota event, a condition that
is later checked before forwarding an operand tree.

git-svn-id: https://llvm.org/svn/llvm-project/polly/trunk@333709 91177308-0d34-0410-b5e6-96231b3b80d8