352262e630
It will be used as a base for the upcoming powerset abstract value domain Tests that do not depend on the detailes of the TypeMask abstract value will be fixed in a follow-up CL Change-Id: I42398504d7c09a0b7c3b3d6b0682e1e813ea4d1d Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/154520 Commit-Queue: Christian Altamirano <coam@google.com> Reviewed-by: Stephen Adams <sra@google.com>