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Author SHA1 Message Date
Jakob Stoklund Olesen
3f729850d3 Eliminate copies of undefined values during coalescing. 
These copies would coalesce easily, but the resulting value would be
defined by a deleted instruction. Now we also remove the undefined value
number from the destination register.

This fixes PR10503.

llvm-svn: 136174
 2011-07-26 23:00:24 +00:00