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Commit 3693e77c authored by Benjamin Kramer's avatar Benjamin Kramer
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X86: If SSE4.1 is missing lower SMUL_LOHI of v4i32 to pmuludq and fix up the high parts. 

This is more expensive than pmuldq but still cheaper than scalarizing the whole thing.

llvm-svn: 207370
parent d34db65c
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