a9c205cc88
Make LoopSimplify change conditional branches in loop exiting blocks
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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
41d00ac45b
Make LoopDeletion check the maximum backedge taken count, rather than the
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exact backedge taken count, when checking for infinite loops. This allows
it to delete loops with multiple exit conditions.
llvm-svn: 84952
2009-10-23 17:10:01 +00:00
1880092722
Change tests from "opt %s" to "opt < %s" so that opt doesn't see the
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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.
llvm-svn: 81537
2009-09-11 18:01:28 +00:00
7158513fe0
another random update
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llvm-svn: 81531
2009-09-11 17:07:01 +00:00
72a13d2476
Use opt -S instead of piping bitcode output through llvm-dis.
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llvm-svn: 81257
2009-09-08 22:34:10 +00:00
9737a63ed8
Change these tests to feed the assembly files to opt directly, instead
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of using llvm-as, now that opt supports this.
llvm-svn: 81226
2009-09-08 16:50:01 +00:00
50532410d1
don't spew tons of stuff to the output. This testcase is *not* for
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loop deletion (it is for a ton of passes), which is very bad.
llvm-svn: 60465
2008-12-03 06:41:50 +00:00
1e427c3264
sabre brings to my attention that the 'tr' suffix is also obsolete
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llvm-svn: 51349
2008-05-20 21:00:03 +00:00
f45ff35bfe
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.
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llvm-svn: 51328
2008-05-20 19:52:04 +00:00
bdcf408d67
Move this test from ADCE to loop deletion, where it is more appropriate.
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llvm-svn: 51181
2008-05-16 04:34:19 +00:00
ec9d8558d5
Testcase for r50770.
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llvm-svn: 50771
2008-05-06 21:01:34 +00:00
0255998dcf
Move this test to LoopDeletion, where it now passes.
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llvm-svn: 50474
2008-04-30 07:17:22 +00:00
Dan Gohman