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3 Commits

Author SHA1 Message Date
Evan Cheng
8c2bde65f0 Teach machine sink to 
1) Do forward copy propagation. This makes it easier to estimate the cost of the
   instruction being sunk.
2) Break critical edges on demand, including cases where the value is used by
   PHI nodes.
Critical edge splitting is not yet enabled by default.

llvm-svn: 114227
 2010-09-17 22:28:18 +00:00
Dan Gohman
df2896d609 Eliminate more uses of llvm-as and llvm-dis. 
llvm-svn: 81290
 2009-09-08 23:54:48 +00:00
Evan Cheng
9428fd271c Fix PR3522. It's not safe to sink into landing pad BB's. 
llvm-svn: 64582
 2009-02-15 08:36:12 +00:00