This is the first patch in a series intended for removing flag
-enable-new-pm=0 from lit tests. This is part of a bigger
effort of completely removing legacy code related to legacy
pass manager in favor of currently default new pass manager.
In this patch flag has been removed only from tests where no significant
change has been required because checks has been duplicated for
both PMs.
Reviewed By: fhahn
Differential Revision: https://reviews.llvm.org/D134150
Looks like this pass isn't really used and hasn't been worked on in a
loooong time.
Reviewed By: asbirlea
Differential Revision: https://reviews.llvm.org/D89010
If a function had at most one return block, the pass would return false
regardless if an unified unreachable block was created.
This patch fixes that by refactoring runOnFunction into two separate
helper functions for handling the unreachable blocks respectively the
return blocks, as suggested by @bjope in a review comment.
This was caught using the check introduced by D80916.
Reviewed By: serge-sans-paille
Differential Revision: https://reviews.llvm.org/D85818
