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Commit 9811e984 authored by Simon Pilgrim's avatar Simon Pilgrim
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[X86][SSE] Only treat SM_SentinelUndef as UNDEF in shuffle mask predicates 

isUndefOrEqual and isUndefOrInRange treated all -ve shuffle mask values as UNDEF, now it has to be SM_SentinelUndef (-1)

We already have asserts to check that lowered SHUFFLE_VECTOR indices are in the range -1 <= index < 2*masksize (or masksize for unary shuffles)

llvm-svn: 278218
parent a4b6a70a
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