Dan Gohman
52ed61204b
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
Dan Gohman
ad2555c9a3
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
Dan Gohman
205b641954
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
Chris Lattner
abca9e3a0d
another random update
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llvm-svn: 81531
2009-09-11 17:07:01 +00:00
Dan Gohman
c95df8b6d8
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
Dan Gohman
8d84372836
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
Chris Lattner
683df044b0
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
Gabor Greif
807c2df887
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
Gabor Greif
d8a4dbb5da
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
Owen Anderson
55b78bc887
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
Owen Anderson
2dccdcf2f2
Testcase for r50770.
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llvm-svn: 50771
2008-05-06 21:01:34 +00:00
Owen Anderson
f8c80ca156
Move this test to LoopDeletion, where it now passes.
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llvm-svn: 50474
2008-04-30 07:17:22 +00:00
