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13 Commits

Author SHA1 Message Date
Cameron Zwarich c4f3d51e12 Make LoopDeletion work on loops with multiple edges, as long as the incoming 
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
 2011-02-22 22:25:39 +00:00
Dan Gohman 8566963713 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97126 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-25 06:57:05 +00:00
Dan Gohman 934af9cfe0 Make LoopDeletion check the maximum backedge taken count, rather than the 
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
 2009-10-23 17:10:01 +00:00
Dan Gohman f2f6ce65b7 Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 
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
 2009-09-11 18:01:28 +00:00
Chris Lattner f8c39a78de another random update 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81531 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-11 17:07:01 +00:00
Dan Gohman 3e054fe9ef Use opt -S instead of piping bitcode output through llvm-dis. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81257 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-08 22:34:10 +00:00
Dan Gohman b1e1e82c54 Change these tests to feed the assembly files to opt directly, instead 
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
 2009-09-08 16:50:01 +00:00
Chris Lattner 1ea7771e09 don't spew tons of stuff to the output. This testcase is *not* for 
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
 2008-12-03 06:41:50 +00:00
Gabor Greif f6cadc440c sabre brings to my attention that the 'tr' suffix is also obsolete 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51349 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-20 21:00:03 +00:00
Gabor Greif 722243bd40 Rename the last test with .llx extension to .ll, resolve duplicate test by 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
 2008-05-20 19:52:04 +00:00
Owen Anderson 3dc73d398c Move this test from ADCE to loop deletion, where it is more appropriate. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51181 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-16 04:34:19 +00:00
Owen Anderson f092b64a49 Testcase for r50770. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50771 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 21:01:34 +00:00
Owen Anderson 0cad8444cc Move this test to LoopDeletion, where it now passes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50474 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 07:17:22 +00:00