diff options
Diffstat (limited to 'gcc/stor-layout.c')
| -rw-r--r-- | gcc/stor-layout.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/gcc/stor-layout.c b/gcc/stor-layout.c index 58ebd6c..0f65e16 100644 --- a/gcc/stor-layout.c +++ b/gcc/stor-layout.c @@ -546,7 +546,8 @@ static machine_mode mode_for_array (tree elem_type, tree size) { tree elem_size; - unsigned HOST_WIDE_INT int_size, int_elem_size; + poly_uint64 int_size, int_elem_size; + unsigned HOST_WIDE_INT num_elems; bool limit_p; /* One-element arrays get the component type's mode. */ @@ -555,14 +556,16 @@ mode_for_array (tree elem_type, tree size) return TYPE_MODE (elem_type); limit_p = true; - if (tree_fits_uhwi_p (size) && tree_fits_uhwi_p (elem_size)) + if (poly_int_tree_p (size, &int_size) + && poly_int_tree_p (elem_size, &int_elem_size) + && maybe_ne (int_elem_size, 0U) + && constant_multiple_p (int_size, int_elem_size, &num_elems)) { - int_size = tree_to_uhwi (size); - int_elem_size = tree_to_uhwi (elem_size); - if (int_elem_size > 0 - && int_size % int_elem_size == 0 - && targetm.array_mode_supported_p (TYPE_MODE (elem_type), - int_size / int_elem_size)) + machine_mode elem_mode = TYPE_MODE (elem_type); + machine_mode mode; + if (targetm.array_mode (elem_mode, num_elems).exists (&mode)) + return mode; + if (targetm.array_mode_supported_p (elem_mode, num_elems)) limit_p = false; } return mode_for_size_tree (size, MODE_INT, limit_p).else_blk (); |