diff options
Diffstat (limited to 'gcc/tree-vector-builder.c')
| -rw-r--r-- | gcc/tree-vector-builder.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/gcc/tree-vector-builder.c b/gcc/tree-vector-builder.c index 954dbcd..88b9d1a 100644 --- a/gcc/tree-vector-builder.c +++ b/gcc/tree-vector-builder.c @@ -96,6 +96,24 @@ tree_vector_builder::new_binary_operation (tree type, tree t1, tree t2, return true; } +/* Return the number of elements that the caller needs to operate on in + order to handle a binary operation on VECTOR_CSTs T1 and T2. This static + function is used instead of new_binary_operation if the result of the + operation is not a VECTOR_CST. */ + +unsigned int +tree_vector_builder::binary_encoded_nelts (tree t1, tree t2) +{ + unsigned int nelts = TYPE_VECTOR_SUBPARTS (TREE_TYPE (t1)); + gcc_assert (nelts == TYPE_VECTOR_SUBPARTS (TREE_TYPE (t2))); + /* See new_binary_operation for details. */ + unsigned int npatterns = least_common_multiple (VECTOR_CST_NPATTERNS (t1), + VECTOR_CST_NPATTERNS (t2)); + unsigned int nelts_per_pattern = MAX (VECTOR_CST_NELTS_PER_PATTERN (t1), + VECTOR_CST_NELTS_PER_PATTERN (t2)); + return MIN (npatterns * nelts_per_pattern, nelts); +} + /* Return a vector element with the value BASE + FACTOR * STEP. */ tree |