[ScopInfo] Allow epilogues to be the main statement of a BB.

Do not add a "_last" suffix to the statement name if there is no (other)
main statement for a basic block. In other words, it becomes the main
statement itself. This further reduces the statement naming difference
between -polly-stmt-granularity=bb and
-polly-stmt-granularity=scalar-indep.

git-svn-id: https://llvm.org/svn/llvm-project/polly/trunk@324168 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed