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Commit ea5ebfed authored by Jakob Stoklund Olesen's avatar Jakob Stoklund Olesen
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Delete dead code after rematerializing. 

LiveRangeEdit::eliminateDeadDefs() will eventually be used by coalescing,
splitting, and spilling for dead code elimination. It can delete chains of dead
instructions as long as there are no dependency loops.

llvm-svn: 127287
parent e996fd30
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