Michael Liao 675eb3b9ac Add PREFETCHW codegen support
- Add 'PRFCHW' feature defined in AVX2 ISA extension



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178040 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-26 17:47:11 +00:00
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2013-03-22 09:04:01 +00:00
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