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Commit 17bb6f07 authored by Simon Pilgrim's avatar Simon Pilgrim
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[X86][SSE] combineTruncateWithSat - use truncateVectorWithPACK to chain PACKUS... 

[X86][SSE] combineTruncateWithSat - use truncateVectorWithPACK to chain PACKUS vXi32-vXi8 saturated truncation

We can use PACKSS/PACKUS to saturate each stage of the chain: PACKSSDW down to [-32768,32767] and then PACKUSWB to [0,255].

llvm-svn: 325243
parent 23bc73b6
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