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4 Commits

Author SHA1 Message Date
Dan Gohman 2299d2ba2f Delete an obsolete sentance from a comment. 
llvm-svn: 72667
 2009-05-31 16:18:57 +00:00
Dan Gohman 5aabc424b1 Enhance LiveValues to work on PHI operands. 
llvm-svn: 67523
 2009-03-23 15:49:37 +00:00
Dan Gohman 76402b9a3d The last use in a block that doesn't have successors 
(return or unreachable) is a kill.

llvm-svn: 67357
 2009-03-20 01:28:21 +00:00
Dan Gohman 37061eef5d Add a liveness analysis pass for LLVM IR values. This computes 
the set of blocks in which values are used, the set in which
values are live-through, and the set in which values are
killed. For the live-through and killed sets, conservative
approximations are used.

llvm-svn: 67309
 2009-03-19 17:29:04 +00:00