recursive base-case of homMask
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@ -178,7 +178,9 @@ def homMask{...vs & tuplen{vs}>1} = {
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def n = tuplen{vs}
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def T = oneType{vs}
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def RT = ty_u{max{8,vcount{T}*n}}
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tree_fold{|, each{{v,i}=>promote{RT,homMask{v}}<<(i*vcount{T}), vs, iota{n}}}
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def a = promote{RT, homMask{...slice{vs,0,n/2}}}
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def b = promote{RT, homMask{...slice{vs,n/2}}}
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(b<<(n/2 * vcount{T})) | a
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}
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if (hasarch{'X86_64'}) {
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