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Commit 0f23b2ba authored by Simon Pilgrim's avatar Simon Pilgrim
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[X86][AVX512] Enable v16i8/v32i8 vector shifts to use an extend+shift+truncate pattern. 

Use the existing AVX2 v8i16 vector shift lowering for v16i8 (extending to v16i32) on AVX512 targets and v32i8 (extending to v32i16) on AVX512BW targets.

Cost model updates to follow.

llvm-svn: 291451
parent e4bb54a8
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