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16 Commits

Author SHA1 Message Date
Dan Gohman
2a190081f6 Introduce a symbolic constant for ~0u for use with AliasAnalysis. 
llvm-svn: 110091
 2010-08-03 01:03:11 +00:00
Owen Anderson
ac4a1ede17 Add INSTANTIATE_AG_PASS, which combines RegisterPass<> with RegisterAnalysisGroup<> for pass registration. 
llvm-svn: 109058
 2010-07-21 23:07:00 +00:00
Owen Anderson
81781220d2 Speculatively revert r108813, in an attempt to get the self-host buildbots working again. I don't see why this patch 
would cause them to fail the way they are, but none of the other intervening patches seem likely either.

llvm-svn: 108818
 2010-07-20 08:26:15 +00:00
Owen Anderson
8dc129325f Reapply r108794, a fix for the failing test from last time. 
llvm-svn: 108813
 2010-07-20 06:52:42 +00:00
Daniel Dunbar
4a35d6f8cd Revert r108794, "Separate PassInfo into two classes: a constructor-free 
superclass (StaticPassInfo) and a constructor-ful subclass (PassInfo).", it is
breaking teh everything.

llvm-svn: 108805
 2010-07-20 03:06:07 +00:00
Owen Anderson
e7c5fe586a Separate PassInfo into two classes: a constructor-free superclass (StaticPassInfo) and a constructor-ful subclass (PassInfo). 
llvm-svn: 108794
 2010-07-20 01:19:58 +00:00
Dan Gohman
0865966440 Rework scev-aa's basic computation so that it doesn't depend 
on ScalarEvolution successfully folding and preserving
range information for both A-B and B-A. Now, if it gets
either one, it's sufficient.

llvm-svn: 107249
 2010-06-30 06:12:16 +00:00
Dan Gohman
8ba26b48bb Fix a typo in a comment. 
llvm-svn: 106260
 2010-06-18 00:53:08 +00:00
Dan Gohman
904d34c90f Add a comment. 
llvm-svn: 97459
 2010-03-01 17:56:04 +00:00
Duncan Sands
19d0b47b1f There are two ways of checking for a given type, for example isa<PointerType>(T) 
and T->isPointerTy().  Convert most instances of the first form to the second form.
Requested by Chris.

llvm-svn: 96344
 2010-02-16 11:11:14 +00:00
Chris Lattner
da363d9af8 adopt getAdjustedAnalysisPointer in a few more passes. 
llvm-svn: 94018
 2010-01-20 20:09:02 +00:00
Dan Gohman
ac45c9171d Make ScalarEvolutionAliasAnalysis slightly more aggressive, by making an 
underlying alias call even for non-identified-object values.

llvm-svn: 85656
 2009-10-31 14:32:25 +00:00
Nick Lewycky
974e12b2d3 Remove includes of Support/Compiler.h that are no longer needed after the 
VISIBILITY_HIDDEN removal.

llvm-svn: 85043
 2009-10-25 06:57:41 +00:00
Nick Lewycky
02d5f77d26 Remove VISIBILITY_HIDDEN from class/struct found inside anonymous namespaces. 
Chris claims we should never have visibility_hidden inside any .cpp file but
that's still not true even after this commit.

llvm-svn: 85042
 2009-10-25 06:33:48 +00:00
Dan Gohman
311d06902a Add some comments. 
llvm-svn: 80452
 2009-08-29 23:36:57 +00:00
Dan Gohman
d926b985df Create a ScalarEvolution-based AliasAnalysis implementation. 
This is a simple AliasAnalysis implementation which works by making
ScalarEvolution queries. ScalarEvolution has a more complete understanding
of arithmetic than BasicAA's collection of ad-hoc checks, so it handles
some cases that BasicAA misses, for example p[i] and p[i+1] within the
same iteration of a loop.

This is currently experimental. It may be that the main use for this pass
will be to help find cases where BasicAA can be profitably extended, or
to help in the development of the overall AliasAnalysis infrastructure,
however it's also possible that it could grow up to become a directly
useful pass.

llvm-svn: 80098
 2009-08-26 14:53:06 +00:00