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Diffstat (limited to 'gcc/doc/generic.texi')
| -rw-r--r-- | gcc/doc/generic.texi | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/gcc/doc/generic.texi b/gcc/doc/generic.texi index 5c1d3cd..9791f8b 100644 --- a/gcc/doc/generic.texi +++ b/gcc/doc/generic.texi @@ -1798,6 +1798,10 @@ a value from @code{enum annot_expr_kind}, the third is an @code{INTEGER_CST}. @tindex VEC_RSHIFT_EXPR @tindex VEC_WIDEN_MULT_HI_EXPR @tindex VEC_WIDEN_MULT_LO_EXPR +@tindex VEC_WIDEN_PLUS_HI_EXPR +@tindex VEC_WIDEN_PLUS_LO_EXPR +@tindex VEC_WIDEN_MINUS_HI_EXPR +@tindex VEC_WIDEN_MINUS_LO_EXPR @tindex VEC_UNPACK_HI_EXPR @tindex VEC_UNPACK_LO_EXPR @tindex VEC_UNPACK_FLOAT_HI_EXPR @@ -1844,6 +1848,33 @@ vector of @code{N/2} products. In the case of @code{VEC_WIDEN_MULT_LO_EXPR} the low @code{N/2} elements of the two vector are multiplied to produce the vector of @code{N/2} products. +@item VEC_WIDEN_PLUS_HI_EXPR +@itemx VEC_WIDEN_PLUS_LO_EXPR +These nodes represent widening vector addition of the high and low parts of +the two input vectors, respectively. Their operands are vectors that contain +the same number of elements (@code{N}) of the same integral type. The result +is a vector that contains half as many elements, of an integral type whose size +is twice as wide. In the case of @code{VEC_WIDEN_PLUS_HI_EXPR} the high +@code{N/2} elements of the two vectors are added to produce the vector of +@code{N/2} products. In the case of @code{VEC_WIDEN_PLUS_LO_EXPR} the low +@code{N/2} elements of the two vectors are added to produce the vector of +@code{N/2} products. + +@item VEC_WIDEN_MINUS_HI_EXPR +@itemx VEC_WIDEN_MINUS_LO_EXPR +These nodes represent widening vector subtraction of the high and low parts of +the two input vectors, respectively. Their operands are vectors that contain +the same number of elements (@code{N}) of the same integral type. The high/low +elements of the second vector are subtracted from the high/low elements of the +first. The result is a vector that contains half as many elements, of an +integral type whose size is twice as wide. In the case of +@code{VEC_WIDEN_MINUS_HI_EXPR} the high @code{N/2} elements of the second +vector are subtracted from the high @code{N/2} of the first to produce the +vector of @code{N/2} products. In the case of +@code{VEC_WIDEN_MINUS_LO_EXPR} the low @code{N/2} elements of the second +vector are subtracted from the low @code{N/2} of the first to produce the +vector of @code{N/2} products. + @item VEC_UNPACK_HI_EXPR @itemx VEC_UNPACK_LO_EXPR These nodes represent unpacking of the high and low parts of the input vector, |