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@@ -6990,20 +6990,30 @@ otherwise. Consider the following exampl
typedef int v4si __attribute__ ((vector_size (16)));
v4si a = @{1,2,3,4@};
v4si b = @{3,2,1,4@};
v4si c;
c = a > b; /* The result would be @{0, 0,-1, 0@} */
c = a == b; /* The result would be @{0,-1, 0,-1@} */
@end smallexample
+In C++, the ternary operator @code{?:} is available. @code{a?b:c}, where
+@code{b} and @code{c} are vectors of the same type and @code{a} is an
+integer vector of the same size and number of elements as @code{b} and
+@code{c}, computes all three arguments and creates a vector
+@code{@{a[0]?b[0]:c[0], a[1]?b[1]:c[1], @dots{}@}}. Note that unlike in
+OpenCL, @code{a} is thus interpreted as @code{a != 0} and not @code{a < 0}.
+As in the case of binary operations, this syntax is also accepted when
+one of @code{b} or @code{c} is a scalar that is then transformed into a
+vector.
+
Vector shuffling is available using functions
@code{__builtin_shuffle (vec, mask)} and
@code{__builtin_shuffle (vec0, vec1, mask)}.
Both functions construct a permutation of elements from one or two
vectors and return a vector of the same type as the input vector(s).
The @var{mask} is an integral vector with the same width (@var{W})
and element count (@var{N}) as the output vector.
The elements of the input vectors are numbered in memory ordering of
@var{vec0} beginning at 0 and @var{vec1} beginning at @var{N}. The