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Commit 3f7470c3 authored by Simon Pilgrim's avatar Simon Pilgrim
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[X86] Fold BITOP(PACKSS(X,Z),PACKSS(Y,W)) --> PACKSS(BITOP(X,Y),BITOP(Z,W)) (REAPPLIED) 

Fold allsignbits pack patterns to make better use of cheap (and commutable) logic ops

Reapplied after a32d14fd / 156913cb with bitcast fix
parent bb65e5b8
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