deleted. I've expanded its test coverage a bit including adding one test that will crash clearly without this change. llvm-svn: 292332
Summary: Port Dead Loop Deletion Pass to the new pass manager. Reviewers: silvas, davide Subscribers: llvm-commits, sanjoy, mcrosier Differential Revision: https://reviews.llvm.org/D21483 llvm-svn: 275453
exact backedge taken count, when checking for infinite loops. This allows it to delete loops with multiple exit conditions. llvm-svn: 84952