diff options
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/tm.texi | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi index 2e22047..c29d249 100644 --- a/gcc/doc/tm.texi +++ b/gcc/doc/tm.texi @@ -5820,10 +5820,16 @@ mode returned by @code{TARGET_VECTORIZE_PREFERRED_SIMD_MODE}. The default is zero which means to not iterate over other vector sizes. @end deftypefn -@deftypefn {Target Hook} machine_mode TARGET_VECTORIZE_GET_MASK_MODE (unsigned @var{nunits}, unsigned @var{length}) -This hook returns mode to be used for a mask to be used for a vector -of specified @var{length} with @var{nunits} elements. By default an integer -vector mode of a proper size is returned. +@deftypefn {Target Hook} opt_machine_mode TARGET_VECTORIZE_GET_MASK_MODE (unsigned @var{nunits}, unsigned @var{length}) +A vector mask is a value that holds one boolean result for every element +in a vector. This hook returns the machine mode that should be used to +represent such a mask when the vector in question is @var{length} bytes +long and contains @var{nunits} elements. The hook returns an empty +@code{opt_machine_mode} if no such mode exists. + +The default implementation returns the mode of an integer vector that +is @var{length} bytes long and that contains @var{nunits} elements, +if such a mode exists. @end deftypefn @deftypefn {Target Hook} {void *} TARGET_VECTORIZE_INIT_COST (struct loop *@var{loop_info}) |