diff options
Diffstat (limited to 'gcc/target.def')
| -rw-r--r-- | gcc/target.def | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/gcc/target.def b/gcc/target.def index c024bb1be6f..dcebb7716d2 100644 --- a/gcc/target.def +++ b/gcc/target.def @@ -1894,12 +1894,16 @@ transformations even in absence of specialized @acronym{SIMD} hardware.", after processing the preferred one derived from preferred_simd_mode. */ DEFHOOK (autovectorize_vector_sizes, - "This hook should return a mask of sizes that should be iterated over\n\ -after trying to autovectorize using the vector size derived from the\n\ -mode returned by @code{TARGET_VECTORIZE_PREFERRED_SIMD_MODE}.\n\ -The default is zero which means to not iterate over other vector sizes.", - unsigned int, - (void), + "If the mode returned by @code{TARGET_VECTORIZE_PREFERRED_SIMD_MODE} is not\n\ +the only one that is worth considering, this hook should add all suitable\n\ +vector sizes to @var{sizes}, in order of decreasing preference. The first\n\ +one should be the size of @code{TARGET_VECTORIZE_PREFERRED_SIMD_MODE}.\n\ +\n\ +The hook does not need to do anything if the vector returned by\n\ +@code{TARGET_VECTORIZE_PREFERRED_SIMD_MODE} is the only one relevant\n\ +for autovectorization. The default implementation does nothing.", + void, + (vector_sizes *sizes), default_autovectorize_vector_sizes) /* Function to get a target mode for a vector mask. */ |