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2 Commits

Author SHA1 Message Date
Dan Gohman
e251b1529f Don't consider instructions with implicit physical register 
defs to be necessarily live.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56310 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-18 18:22:32 +00:00
Dan Gohman
d3ead4329e Add a new MachineInstr-level DCE pass. It is very simple, and is intended to 
be used with fast-isel.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56268 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-17 00:43:24 +00:00