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Diffstat (limited to 'gcc/doc/md.texi')
| -rw-r--r-- | gcc/doc/md.texi | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/gcc/doc/md.texi b/gcc/doc/md.texi index 90efcc3..b6dd838 100644 --- a/gcc/doc/md.texi +++ b/gcc/doc/md.texi @@ -1,5 +1,5 @@ @c Copyright (C) 1988, 1989, 1992, 1993, 1994, 1996, 1998, 1999, 2000, 2001, -@c 2002, 2003, 2004, 2005 Free Software Foundation, Inc. +@c 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. @c This is part of the GCC manual. @c For copying conditions, see the file gcc.texi. @@ -3099,6 +3099,25 @@ Compute the sum of the unsigned elements of a vector. The vector is operand 1, and the scalar result is stored in the least significant bits of operand 0 (also a vector). The output and input vector should have the same modes. +@cindex @code{sdot_prod@var{m}} instruction pattern +@item @samp{sdot_prod@var{m}} +@cindex @code{udot_prod@var{m}} instruction pattern +@item @samp{udot_prod@var{m}} +Compute the sum of the products of two signed/unsigned elements. +Operand 1 and operand 2 are of the same mode. Their product, which is of a +wider mode, is computed and added to operand 3. Operand 3 is of a mode equal or +wider than the mode of the product. The result is placed in operand 0, which +is of the same mode as operand 3. + +@cindex @code{ssum_widen@var{m3}} instruction pattern +@item @samp{ssum_widen@var{m3}} +@cindex @code{usum_widen@var{m3}} instruction pattern +@item @samp{usum_widen@var{m3}} +Operands 0 and 2 are of the same mode, which is wider than the mode of +operand 1. Add operand 1 to operand 2 and place the widened result in +operand 0. (This is used express accumulation of elements into an accumulator +of a wider mode.) + @cindex @code{vec_shl_@var{m}} instruction pattern @cindex @code{vec_shr_@var{m}} instruction pattern @item @samp{vec_shl_@var{m}}, @samp{vec_shr_@var{m}} |