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Commit 346886bc authored by Simon Pilgrim's avatar Simon Pilgrim
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[X86][SSE] Add support for detecting SUB(SPLAT_BV, SPLAT) cases for shift-rotate patterns. 

This improves splat rotations (rotation by an uniform value), to avoid having to use the generic non-uniform shift code (extension to PR37426).

llvm-svn: 333641
parent 0f11db35
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