get_vectype_for_scalar_type returns a variable-length vector type
for SVE, whereas get_vec_alignment_for_array_type assumed it would
always be an INTEGER_CST.
This is needed to build libstdc++-v3/src/closures.cc for SVE
(and probably many other places besides -- this was just the
first hit).
2018-01-12 Richard Sandiford <richard.sandiford@linaro.org>
gcc/
* tree-vectorizer.c (get_vec_alignment_for_array_type): Handle
polynomial type sizes.
From-SVN: r256586
+2018-01-12 Richard Sandiford <richard.sandiford@linaro.org>
+
+ * tree-vectorizer.c (get_vec_alignment_for_array_type): Handle
+ polynomial type sizes.
+
2018-01-12 Richard Sandiford <richard.sandiford@linaro.org>
* gimplify.c (gimple_add_tmp_var_fn): Allow variables to have a
get_vec_alignment_for_array_type (tree type)
{
gcc_assert (TREE_CODE (type) == ARRAY_TYPE);
+ poly_uint64 array_size, vector_size;
tree vectype = get_vectype_for_scalar_type (strip_array_types (type));
if (!vectype
- || !TYPE_SIZE (type)
- || TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST
- || tree_int_cst_lt (TYPE_SIZE (type), TYPE_SIZE (vectype)))
+ || !poly_int_tree_p (TYPE_SIZE (type), &array_size)
+ || !poly_int_tree_p (TYPE_SIZE (vectype), &vector_size)
+ || maybe_lt (array_size, vector_size))
return 0;
return TYPE_ALIGN (vectype);