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[X86] Merged Reverse/Alternate shuffle cost tables. NFCI.

Authored by RKSimon on Jan 4 2017, 4:08 AM.

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[X86] Merged Reverse/Alternate shuffle cost tables. NFCI.

As discussed on D27811, merged the shuffle cost LUTs and use the shuffle kind to perform the lookup instead of the ISD opcode.

llvm-svn: 290956

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Committed
RKSimonJan 4 2017, 4:08 AM
Parents
rG5815f6c53c9b: [framelowering] Skip dbg values when getting next/previous instruction.
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