Jakob Stoklund Olesen e8339b2e63 Disable local spill hoisting for non-killing copies. ...

If the source register is live after the copy being spilled, there is no
point to hoisting it.  Hoisting inside a basic block only serves to
resolve interferences by shortening the live range of the source.

llvm-svn: 139882

2011-09-16 00:03:33 +00:00

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