diff options
Diffstat (limited to 'gcc/doc/tm.texi')
| -rw-r--r-- | gcc/doc/tm.texi | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi index c4dc052d..768c7c7 100644 --- a/gcc/doc/tm.texi +++ b/gcc/doc/tm.texi @@ -5284,6 +5284,28 @@ the argument @var{OFF} to @code{REALIGN_LOAD}, in which case the low log2(@var{VS})-1 bits of @var{addr} will be considered. @end deftypefn +@deftypefn {Target Hook} tree TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_EVEN (tree @var{x}) +This hook should return the DECL of a function @var{f} that implements +widening multiplication of the even elements of two input vectors of type @var{x}. + +If this hook is defined, the autovectorizer will use it along with the +@code{TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_ODD} target hook when vectorizing +widening multiplication in cases that the order of the results does not have to be +preserved (e.g. used only by a reduction computation). Otherwise, the +@code{widen_mult_hi/lo} idioms will be used. +@end deftypefn + +@deftypefn {Target Hook} tree TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_ODD (tree @var{x}) +This hook should return the DECL of a function @var{f} that implements +widening multiplication of the odd elements of two input vectors of type @var{x}. + +If this hook is defined, the autovectorizer will use it along with the +@code{TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_EVEN} target hook when vectorizing +widening multiplication in cases that the order of the results does not have to be +preserved (e.g. used only by a reduction computation). Otherwise, the +@code{widen_mult_hi/lo} idioms will be used. +@end deftypefn + @node Anchored Addresses @section Anchored Addresses @cindex anchored addresses |