Shinji Okumura 604021bf31 [Attributor] Fix callsite check in AAUndefinedBehavior
This is the next patch of D86842
When we check `noundef` attribute violation at callsites, we do not have to require `nonnull` in the following two cases.
1. An argument is known to be simplified to undef
2. An argument is known to be dead

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D86845
2020-08-30 13:17:02 +09:00
..
2020-08-28 12:59:33 -07:00