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23 Commits

Author SHA1 Message Date
Owen Anderson
cdd7cdc49a Add ConstantRange information to the debugging output. 
llvm-svn: 110598
 2010-08-09 20:50:46 +00:00
Owen Anderson
86690fa988 Add the beginnings of infrastructure for range tracking. 
llvm-svn: 110388
 2010-08-05 22:59:19 +00:00
Owen Anderson
68ee87e057 Split the tag and value members of LVILatticeVal in preparation for expanding the lattice to something that won't fit in two bits. 
llvm-svn: 110383
 2010-08-05 22:10:46 +00:00
Owen Anderson
e1aed29cca Add an initial implementation of PHI translation for LazyValueInfo. This involves rolling back some 
of my earlier data structure improvements until I can ensure that there are no iterator invalidation problems.

llvm-svn: 109935
 2010-07-30 23:59:40 +00:00
Owen Anderson
4e6f48d705 Revert my last two patches to LVI, which recent changes have exposed a miscompilation in. 
llvm-svn: 109889
 2010-07-30 20:56:07 +00:00
Owen Anderson
712152a68e Pass the queried value by argument rather than in a member, in preparation for supporting PHI translation. 
llvm-svn: 109701
 2010-07-28 23:50:08 +00:00
Owen Anderson
670fd343a5 Get rid of LVIQuery as a distinct data structure, so that we don't have to initialize a new set of maps on every query. 
llvm-svn: 109679
 2010-07-28 22:07:25 +00:00
Owen Anderson
2d39891e91 Rearrange several datastructures in LazyValueInfo to improve compile time. 
This is still not perfect, but better than it was before.

llvm-svn: 109563
 2010-07-27 23:58:11 +00:00
Owen Anderson
12ab6162bf Add an initial implementation of LazyValueInfo updating for JumpThreading. Disabled for now. 
llvm-svn: 109424
 2010-07-26 18:48:03 +00:00
Owen Anderson
f8addbb0a1 Fix batch of converting RegisterPass<> to INTIALIZE_PASS(). 
llvm-svn: 109045
 2010-07-21 22:09:45 +00:00
David Greene
016e0af68d Convert debug messages to use dbgs(). Generally this means 
s/errs/dbgs/g except for certain special cases.

llvm-svn: 92040
 2009-12-23 20:43:58 +00:00
Chris Lattner
f3d89dee33 typo spotted by duncan. 
llvm-svn: 88884
 2009-11-16 03:51:42 +00:00
Chris Lattner
34aefed024 teach LVI to infer edge information from switch instructions. 
This allows JT to eliminate a ton of infeasible edges when
handling code like the templates in PatternMatch.h

llvm-svn: 88869
 2009-11-15 20:02:12 +00:00
Chris Lattner
69a52dd583 fix a logic error that would cause LVI-JT to miscompile 
some conditionals

llvm-svn: 88868
 2009-11-15 20:01:24 +00:00
Chris Lattner
7ea8b3fbf8 implement the first stab at caching queries. This isn't correct 
(because the invalidation logic is missing) but LVI isn't enabled
by default anyway.

llvm-svn: 88867
 2009-11-15 20:00:52 +00:00
Chris Lattner
b9a9336376 refactor a bunch of code forming the new LazyValueInfoCache 
and LVIQuery classes, no functionality change.

llvm-svn: 88866
 2009-11-15 19:59:49 +00:00
Chris Lattner
3e63fb7318 various fixes to the lattice transfer functions. 
llvm-svn: 86952
 2009-11-12 04:57:13 +00:00
Chris Lattner
6d1ca5d976 Add a new getPredicateOnEdge method which returns more rich information for 
constant constraints.  Improve the LVI lattice to include inequality 
constraints.

llvm-svn: 86950
 2009-11-12 04:36:58 +00:00
Chris Lattner
b5bb115ece expose edge information and switch j-t to use it. 
llvm-svn: 86920
 2009-11-12 01:29:10 +00:00
Chris Lattner
46056d81aa move some stuff into DEBUG's and turn on lazy-value-info for 
the basic.ll testcase.

llvm-svn: 86918
 2009-11-12 01:22:16 +00:00
Chris Lattner
4c831006c7 make LazyValueInfo actually to some stuff. This isn't very tested but improves 
strswitch.

llvm-svn: 86889
 2009-11-11 22:48:44 +00:00
Chris Lattner
b45381c3f0 stub out some LazyValueInfo interfaces, and have JumpThreading 
start using them in a trivial way when -enable-jump-threading-lvi
is passed.  enable-jump-threading-lvi will be my playground for 
awhile.

llvm-svn: 86789
 2009-11-11 02:08:33 +00:00
Chris Lattner
6c04051d2a Stub out a new lazy value info pass, which will eventually 
vend value constraint information to the optimizer.

llvm-svn: 86767
 2009-11-11 00:22:30 +00:00