Dan Gohman a9c205cc88 Make LoopSimplify change conditional branches in loop exiting blocks ... which branch on undef to branch on a boolean constant for the edge exiting the loop. This helps ScalarEvolution compute trip counts for loops. Teach ScalarEvolution to recognize single-value PHIs, when safe, and ForgetSymbolicName to forget such single-value PHI nodes as apprpriate in ForgetSymbolicName. llvm-svn: 97126		2010-02-25 06:57:05 +00:00
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2007-07-23-InfiniteLoop.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
2008-05-06-Phi.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
dcetest.ll	another random update	2009-09-11 17:07:01 +00:00
dg.exp	sabre brings to my attention that the 'tr' suffix is also obsolete	2008-05-20 21:00:03 +00:00
multiple-exit-conditions.ll	Make LoopDeletion check the maximum backedge taken count, rather than the	2009-10-23 17:10:01 +00:00
simplify-then-delete.ll	Make LoopSimplify change conditional branches in loop exiting blocks	2010-02-25 06:57:05 +00:00