Chris Lattner
ec24272c6f
Update PHI nodes in successors of exit blocks.
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llvm-svn: 26113
2006-02-10 23:26:14 +00:00
Chris Lattner
672c45a3c0
Reform the unswitching code in terms of edge splitting, not block splitting.
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llvm-svn: 26112
2006-02-10 23:16:39 +00:00
Chris Lattner
ada27b9dba
Fix a case where UnswitchTrivialCondition broke critical edges with
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phi's in the successors
llvm-svn: 26108
2006-02-10 19:08:15 +00:00
Chris Lattner
8d28872523
add some notes, move some code around. Implement unswitching of loops
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with branches on partially invariant computations.
llvm-svn: 26104
2006-02-10 02:30:37 +00:00
Chris Lattner
e51f996026
Move code around to be more logical, no functionality change.
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llvm-svn: 26103
2006-02-10 02:01:22 +00:00
Chris Lattner
4432cd73f2
When unswitching a trivial loop, do admit we are doing it! :)
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llvm-svn: 26102
2006-02-10 01:36:35 +00:00
Chris Lattner
eef362d63e
Implement unconditional unswitching of 'trivial' loops, those loops that contain
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branches in their entry block that control whether or not the loop is a noop or not.
llvm-svn: 26101
2006-02-10 01:24:09 +00:00
Chris Lattner
602fc20596
Simplify control flow a bit, note that unswitch preserves canonical loop form
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llvm-svn: 26098
2006-02-09 22:15:42 +00:00
Chris Lattner
19acace8c0
Make the threshold a parameter
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llvm-svn: 26093
2006-02-09 20:15:48 +00:00
Chris Lattner
4ae405113a
Simplify the loop-unswitch pass, by not even trying to unswitch loops with
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uses of loop values outside the loop. We need loop-closed SSA form to do
this right, or to use SSA rewriting if we really care.
llvm-svn: 26089
2006-02-09 19:14:52 +00:00
Chris Lattner
2588f0eb8f
Make iostream #inclusion explicit
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llvm-svn: 25514
2006-01-22 23:32:06 +00:00
Misha Brukman
53e199440e
Remove trailing whitespace
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llvm-svn: 21427
2005-04-21 23:48:37 +00:00
Jeff Cohen
67f737e5d1
Put createLoopUnswitchPass() into proper namespace
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llvm-svn: 19306
2005-01-06 05:47:18 +00:00
Alkis Evlogimenos
0c50e0f211
Fixes to make LLVM compile with vc7.1.
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Patch contributed by Paolo Invernizzi!
llvm-svn: 16152
2004-09-03 18:19:51 +00:00
Reid Spencer
c4abcbefb1
Changes For Bug 352
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Move include/Config and include/Support into include/llvm/Config,
include/llvm/ADT and include/llvm/Support. From here on out, all LLVM
public header files must be under include/llvm/.
llvm-svn: 16137
2004-09-01 22:55:40 +00:00
Chris Lattner
29f69938e7
Initial checkin of a simple loop unswitching pass. It still needs work,
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but it's a start, and seems to do it's basic job.
llvm-svn: 13068
2004-04-19 18:07:02 +00:00
