[PATCH] D41811: X86: Add pattern matching for PMADDWD

Simon Pilgrim via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Sun Jan 7 13:05:50 PST 2018

RKSimon added inline comments.

Comment at: test/CodeGen/X86/madd.ll:358
 ; SSE2-NEXT:    paddd %xmm5, %xmm0
 ; SSE2-NEXT:    retq
Whats missing to get SSE2 to lower to 2 x pmaddwd? (TBH I'm more interested in AVX1 but it'd be good for SSE as well).


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