[PATCH] D42417: [SCEV] Fix isLoopEntryGuardedByCond

[Serguei Katkov via Phabricator via llvm-commits]

skatkov added a comment.

Hi Sanjoy,

The number of buildbot failures were so big but I remember the following case (if I do not miss anything):

1. All Usages in IRCE caused an assert in unit testing
2. Crash was in getSignExtendExpr: the prblem was with LHS. Might be it is the same issue as 3rd one. Example: http://lab.llvm.org:8011/builders/clang-s390x-linux/builds/14076/steps/ninja%20check%201/logs/stdio or http://lab.llvm.org:8011/builders/clang-s390x-linux-lnt/builds/4265/steps/ninja%20check%201/logs/stdio
3. Most popular ScalarEvolution::isImpliedCondOperandsViaNoOverflow (LHS). Example : http://lab.llvm.org:8011/builders/clang-cmake-x86_64-avx2-linux-perf/builds/3854/steps/test-suite/logs/test.log

I hope it helps.


https://reviews.llvm.org/D42417