diff options
Diffstat (limited to 'gcc/vec-perm-indices.h')
| -rw-r--r-- | gcc/vec-perm-indices.h | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/gcc/vec-perm-indices.h b/gcc/vec-perm-indices.h index 52b65a5..0b54782 100644 --- a/gcc/vec-perm-indices.h +++ b/gcc/vec-perm-indices.h @@ -25,7 +25,7 @@ along with GCC; see the file COPYING3. If not see /* A vector_builder for building constant permutation vectors. The elements do not need to be clamped to a particular range of input elements. */ -typedef int_vector_builder<HOST_WIDE_INT> vec_perm_builder; +typedef int_vector_builder<poly_int64> vec_perm_builder; /* This class represents a constant permutation vector, such as that used as the final operand to a VEC_PERM_EXPR. @@ -49,7 +49,7 @@ typedef int_vector_builder<HOST_WIDE_INT> vec_perm_builder; different numbers of elements. */ class vec_perm_indices { - typedef HOST_WIDE_INT element_type; + typedef poly_int64 element_type; public: vec_perm_indices (); @@ -118,13 +118,17 @@ vec_perm_indices::vec_perm_indices (const vec_perm_builder &elements, inline vec_perm_indices::element_type vec_perm_indices::clamp (element_type elt) const { - element_type limit = input_nelts (); - elt %= limit; + element_type limit = input_nelts (), elem_within_input; + int input; + if (!can_div_trunc_p (elt, limit, &input, &elem_within_input)) + return elt; + /* Treat negative elements as counting from the end. This only matters if the vector size is not a power of 2. */ - if (elt < 0) - elt += limit; - return elt; + if (known_lt (elem_within_input, 0)) + return elem_within_input + limit; + + return elem_within_input; } /* Return the value of vector element I, which might or might not be |