The following changes are introduced:
1. Entry block might have more than one predecessor, even if it is not
a selection/loop merge block. However Apply method asserts that
there is only one predecessor. Now, IsApplicable method ensures
that there is only one predecessor.
2. In fuzzer pass we exclude both loop headers and selection headers
as potential exit blocks.
Fixes#3827.
Adds a transformation that inserts a conditional statement with a
boolean expression of arbitrary value and duplicates a given
single-entry, single-exit region, so that it is present in each
conditional branch and will be executed regardless of which branch will
be taken.
Fixes#3614.
