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Commit 9a06696a authored by Jakob Stoklund Olesen's avatar Jakob Stoklund Olesen
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Completely disallow partial copies in adjustCopiesBackFrom(). 

Partial copies can show up even when CoalescerPair.isPartial() returns
false. For example:

   %vreg24:dsub_0<def> = COPY %vreg31:dsub_0; QPR:%vreg24,%vreg31

Such a partial-partial copy is not good enough for the transformation
adjustCopiesBackFrom() needs to do.

llvm-svn: 166944
parent 0de4a1e4
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