diff options
Diffstat (limited to 'gcc/tree-dfa.c')
| -rw-r--r-- | gcc/tree-dfa.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/gcc/tree-dfa.c b/gcc/tree-dfa.c index 952d136..bb5cd49 100644 --- a/gcc/tree-dfa.c +++ b/gcc/tree-dfa.c @@ -368,12 +368,14 @@ get_or_create_ssa_default_def (struct function *fn, tree var) base variable. The access range is delimited by bit positions *POFFSET and *POFFSET + *PMAX_SIZE. The access size is *PSIZE bits. If either *PSIZE or *PMAX_SIZE is -1, they could not be determined. If *PSIZE - and *PMAX_SIZE are equal, the access is non-variable. */ + and *PMAX_SIZE are equal, the access is non-variable. If *PREVERSE is + true, the storage order of the reference is reversed. */ tree get_ref_base_and_extent (tree exp, HOST_WIDE_INT *poffset, HOST_WIDE_INT *psize, - HOST_WIDE_INT *pmax_size) + HOST_WIDE_INT *pmax_size, + bool *preverse) { offset_int bitsize = -1; offset_int maxsize; @@ -381,7 +383,8 @@ get_ref_base_and_extent (tree exp, HOST_WIDE_INT *poffset, offset_int bit_offset = 0; bool seen_variable_array_ref = false; - /* First get the final access size from just the outermost expression. */ + /* First get the final access size and the storage order from just the + outermost expression. */ if (TREE_CODE (exp) == COMPONENT_REF) size_tree = DECL_SIZE (TREE_OPERAND (exp, 1)); else if (TREE_CODE (exp) == BIT_FIELD_REF) @@ -398,6 +401,8 @@ get_ref_base_and_extent (tree exp, HOST_WIDE_INT *poffset, && TREE_CODE (size_tree) == INTEGER_CST) bitsize = wi::to_offset (size_tree); + *preverse = reverse_storage_order_for_component_p (exp); + /* Initially, maxsize is the same as the accessed element size. In the following it will only grow (or become -1). */ maxsize = bitsize; |