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Commit a0e96bd5 authored by Nikita Popov's avatar Nikita Popov
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[CodeGen][X86] Don't scalarize vector saturating add/sub 

Now that we have vector support for [US](ADD|SUB)O we no longer
need to scalarize when expanding [US](ADD|SUB)SAT.

This matches what the cost model already does.

Differential Revision: https://reviews.llvm.org/D57348

llvm-svn: 353651
parent e8adbae0
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