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Hi,
this patch adds back the support for the vpermil2p{s,d} insns: these were initially part of AVX, they were reverted from GCC by HJ Lu, and finally these insns appeared in AMD's manual 6 as part of XOP: http://support.amd.com/us/Processor_TechDocs/43479.pdf
The attached patch passed bootstrap and test on amd64-linux.
Ok for trunk?
Thanks, Uros.
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