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Commit 1a8cefc3 authored by Simon Pilgrim's avatar Simon Pilgrim
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[X86][SSE] LowerBUILD_VECTORAsVariablePermute - add support for scaling index vectors 

This allows us to use PSHUFB for v8i16/v4i32 and VPERMD/PERMPS for v4i64/v4f64 variable shuffles.

Differential Revision: https://reviews.llvm.org/D42487

llvm-svn: 323987
parent 6691e112
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