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* Make LoopDeletion work on loops with multiple edges, as long as the incomingCameron Zwarich2011-02-22
| | | | | | values from all of the loop's exiting blocks are equal. Patch by Andrew Clinton. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126253 91177308-0d34-0410-b5e6-96231b3b80d8
* Make LoopSimplify change conditional branches in loop exiting blocksDan Gohman2010-02-25
| | | | | | | | | | | | | 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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97126 91177308-0d34-0410-b5e6-96231b3b80d8
* Make LoopDeletion check the maximum backedge taken count, rather than theDan Gohman2009-10-23
| | | | | | | | exact backedge taken count, when checking for infinite loops. This allows it to delete loops with multiple exit conditions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84952 91177308-0d34-0410-b5e6-96231b3b80d8
* Change tests from "opt %s" to "opt < %s" so that opt doesn't see theDan Gohman2009-09-11
| | | | | | | | | input filename so that opt doesn't print the input filename in the output so that grep lines in the tests don't unintentionally match strings in the input filename. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81537 91177308-0d34-0410-b5e6-96231b3b80d8
* another random updateChris Lattner2009-09-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81531 91177308-0d34-0410-b5e6-96231b3b80d8
* Use opt -S instead of piping bitcode output through llvm-dis.Dan Gohman2009-09-08
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81257 91177308-0d34-0410-b5e6-96231b3b80d8
* Change these tests to feed the assembly files to opt directly, insteadDan Gohman2009-09-08
| | | | | | | of using llvm-as, now that opt supports this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81226 91177308-0d34-0410-b5e6-96231b3b80d8
* don't spew tons of stuff to the output. This testcase is *not* forChris Lattner2008-12-03
| | | | | | | loop deletion (it is for a ton of passes), which is very bad. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60465 91177308-0d34-0410-b5e6-96231b3b80d8
* sabre brings to my attention that the 'tr' suffix is also obsoleteGabor Greif2008-05-20
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51349 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename the last test with .llx extension to .ll, resolve duplicate test by ↵Gabor Greif2008-05-20
| | | | | | renaming to isnan2. Now that no test has llx ending there is no need to search for them from dg.exp too. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51328 91177308-0d34-0410-b5e6-96231b3b80d8
* Move this test from ADCE to loop deletion, where it is more appropriate.Owen Anderson2008-05-16
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51181 91177308-0d34-0410-b5e6-96231b3b80d8
* Testcase for r50770.Owen Anderson2008-05-06
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50771 91177308-0d34-0410-b5e6-96231b3b80d8
* Move this test to LoopDeletion, where it now passes.Owen Anderson2008-04-30
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50474 91177308-0d34-0410-b5e6-96231b3b80d8