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authorHal Finkel <hfinkel@anl.gov>2012-11-01 06:26:34 +0000
committerHal Finkel <hfinkel@anl.gov>2012-11-01 06:26:34 +0000
commit86ccc55c82651f91fd6a312c5f6a4b511bcd1aec (patch)
treee9094f4db9bc48740465df1d5d0e5fee12f8e1ba /include/llvm/PassSupport.h
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BBVectorize: Account for internal shuffle costs
When target costs are available, use them to account for the costs of shuffles on internal edges of the DAG of candidate pairs. Because the shuffle costs here are currently for only the internal edges, the current target cost model is trivial, and the chain depth requirement is still in place, I don't yet have an easy test case. Nevertheless, by looking at the debug output, it does seem to do the right think to the effective "size" of each DAG of candidate pairs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167217 91177308-0d34-0410-b5e6-96231b3b80d8
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