diff options
Diffstat (limited to 'gcc/doc/generic.texi')
| -rw-r--r-- | gcc/doc/generic.texi | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/gcc/doc/generic.texi b/gcc/doc/generic.texi index 653a17c..a4d0af4 100644 --- a/gcc/doc/generic.texi +++ b/gcc/doc/generic.texi @@ -1789,9 +1789,12 @@ a value from @code{enum annot_expr_kind}, the third is an @code{INTEGER_CST}. @tindex VEC_UNPACK_LO_EXPR @tindex VEC_UNPACK_FLOAT_HI_EXPR @tindex VEC_UNPACK_FLOAT_LO_EXPR +@tindex VEC_UNPACK_FIX_TRUNC_HI_EXPR +@tindex VEC_UNPACK_FIX_TRUNC_LO_EXPR @tindex VEC_PACK_TRUNC_EXPR @tindex VEC_PACK_SAT_EXPR @tindex VEC_PACK_FIX_TRUNC_EXPR +@tindex VEC_PACK_FLOAT_EXPR @tindex VEC_COND_EXPR @tindex SAD_EXPR @@ -1846,10 +1849,22 @@ where the values are converted from fixed point to floating point. The single operand is a vector that contains @code{N} elements of the same integral type. The result is a vector that contains half as many elements of a floating point type whose size is twice as wide. In the case of -@code{VEC_UNPACK_HI_EXPR} the high @code{N/2} elements of the vector are -extracted, converted and widened. In the case of @code{VEC_UNPACK_LO_EXPR} +@code{VEC_UNPACK_FLOAT_HI_EXPR} the high @code{N/2} elements of the vector are +extracted, converted and widened. In the case of @code{VEC_UNPACK_FLOAT_LO_EXPR} the low @code{N/2} elements of the vector are extracted, converted and widened. +@item VEC_UNPACK_FIX_TRUNC_HI_EXPR +@itemx VEC_UNPACK_FIX_TRUNC_LO_EXPR +These nodes represent unpacking of the high and low parts of the input vector, +where the values are truncated from floating point to fixed point. The +single operand is a vector that contains @code{N} elements of the same +floating point 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_UNPACK_FIX_TRUNC_HI_EXPR} the high @code{N/2} elements of the +vector are extracted and converted with truncation. In the case of +@code{VEC_UNPACK_FIX_TRUNC_LO_EXPR} the low @code{N/2} elements of the +vector are extracted and converted with truncation. + @item VEC_PACK_TRUNC_EXPR This node represents packing of truncated elements of the two input vectors into the output vector. Input operands are vectors that contain the same @@ -1875,6 +1890,14 @@ twice as many elements of an integral type whose size is half as wide. The elements of the two vectors are merged (concatenated) to form the output vector. +@item VEC_PACK_FLOAT_EXPR +This node represents packing of elements of the two input vectors into the +output vector, where the values are converted from fixed point to floating +point. Input operands are vectors that contain the same number of elements +of an integral type. The result is a vector that contains twice as many +elements of floating point type whose size is half as wide. The elements of +the two vectors are merged (concatenated) to form the output vector. + @item VEC_COND_EXPR These nodes represent @code{?:} expressions. The three operands must be vectors of the same size and number of elements. The second and third |