diff options
| author | Richard Sandiford <richard.sandiford@linaro.org> | 2017-09-05 19:57:47 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2017-09-05 19:57:47 +0000 |
| commit | 3981fbb65a43dff3a81ebc32c94d6f86bb4f9783 (patch) | |
| tree | 8affdf594e34f746a57a31d85951478c8b5be805 /gcc/doc | |
| parent | 9da15d4097fa2fde5c2a5f1681db8fd04488a563 (diff) | |
| download | gcc-3981fbb65a43dff3a81ebc32c94d6f86bb4f9783.zip gcc-3981fbb65a43dff3a81ebc32c94d6f86bb4f9783.tar.gz gcc-3981fbb65a43dff3a81ebc32c94d6f86bb4f9783.tar.bz2 | |
Make targetm.get_mask_mode return an opt_mode
...for consistency with mode_for_vector.
2017-09-05 Richard Sandiford <richard.sandiford@linaro.org>
gcc/
* target.def (get_mask_mode): Change return type to opt_mode.
Expand commentary.
* doc/tm.texi: Regenerate.
* targhooks.h (default_get_mask_mode): Return an opt_mode.
* targhooks.c (default_get_mask_mode): Likewise.
* config/i386/i386.c (ix86_get_mask_mode): Likewise.
* optabs-query.c (can_vec_mask_load_store_p): Update use of
targetm.get_mask_mode.
* tree.c (build_truth_vector_type): Likewise.
From-SVN: r251731
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}) |