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Commit 820e1326 authored by Simon Pilgrim's avatar Simon Pilgrim
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[X86][AVX512DQ] Improve lowering of MUL v2i64 and v4i64 

With DQI but without VLX, lower v2i64 and v4i64 MUL operations with v8i64 MUL (vpmullq).

Updated cost table accordingly.

Differential Revision: https://reviews.llvm.org/D26011

llvm-svn: 285304
parent e372aecb
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