/**
* Check, if a block dominates another block.
- * @param a The first block.
- * @param b The second block.
+ *
+ * @param a The potential dominator block.
+ * @param b The potentially dominated block.
+ *
* @return 1, if @p a dominates @p b, else 0.
*/
int block_dominates(const ir_node *a, const ir_node *b);
+/**
+ * Check, if a block strictly dominates another block, i.e. a != b.
+ *
+ * @param a The potential dominator block.
+ * @param b The potentially dominated block.
+ *
+ * @return 1, if @p a strictly dominates @p b, else 0.
+ */
+int block_strictly_dominates(const ir_node *a, const ir_node *b);
+
/**
* Returns the smallest common dominator block of two nodes.
* @param a A node.
/**
* Check, if a block post dominates another block.
- * @param a The first block.
- * @param b The second block.
+ *
+ * @param a The potential post dominator block.
+ * @param b The potentially post dominated block.
+ *
* @return 1, if @p a post dominates @p b, else 0.
*/
int block_postdominates(const ir_node *a, const ir_node *b);
+/**
+ * Check, if a block strictly post dominates another block, i.e. a != b.
+ *
+ * @param a The potential post dominator block.
+ * @param b The potentially post dominated block.
+ *
+ * @return 1, if @p a strictly post dominates @p b, else 0.
+ */
+int block_strictly_postdominates(const ir_node *a, const ir_node *b);
+
/**
* Visit all nodes in the dominator subtree of a given node.
* Call a pre-visitor before descending to the children and call a
get_pdom_info(bl)->dom_depth = depth;
}
-unsigned get_Block_dom_tree_pre_num(const ir_node *bl)
-{
+unsigned get_Block_dom_tree_pre_num(const ir_node *bl) {
assert(is_Block(bl));
return get_dom_info(bl)->tree_pre_num;
}
-unsigned get_Block_dom_max_subtree_pre_num(const ir_node *bl)
-{
+unsigned get_Block_dom_max_subtree_pre_num(const ir_node *bl) {
assert(is_Block(bl));
return get_dom_info(bl)->max_subtree_pre_num;
}
-unsigned get_Block_pdom_tree_pre_num(const ir_node *bl)
-{
+unsigned get_Block_pdom_tree_pre_num(const ir_node *bl) {
assert(is_Block(bl));
return get_pdom_info(bl)->tree_pre_num;
}
-unsigned get_Block_pdom_max_subtree_pre_num(const ir_node *bl)
-{
+unsigned get_Block_pdom_max_subtree_pre_num(const ir_node *bl) {
assert(is_Block(bl));
return get_pdom_info(bl)->max_subtree_pre_num;
}
/* Check, if a block dominates another block. */
-int block_dominates(const ir_node *a, const ir_node *b)
-{
+int block_dominates(const ir_node *a, const ir_node *b) {
const ir_dom_info *ai, *bi;
if (is_Block(a) && is_Block(b)) {
return 0;
}
+/* Check, if a block strictly dominates another block. */
+int block_strictly_dominates(const ir_node *a, const ir_node *b) {
+ return (a != b) && block_dominates(a, b);
+}
+
/* Returns the smallest common dominator block of two nodes. */
-ir_node *node_smallest_common_dominator(ir_node *a, ir_node *b)
-{
+ir_node *node_smallest_common_dominator(ir_node *a, ir_node *b) {
ir_node *bl_a = is_Block(a) ? a : get_nodes_block(a);
ir_node *bl_b = is_Block(b) ? b : get_nodes_block(b);
ir_node *dom_bl = NULL;
}
/* Returns the smallest common dominator block of all users of a node. */
-ir_node *node_users_smallest_common_dominator(ir_node *irn, int handle_phi)
-{
+ir_node *node_users_smallest_common_dominator(ir_node *irn, int handle_phi) {
int n, j, i = 0, success;
ir_node **user_blocks, *dom_bl;
const ir_edge_t *edge;
/* Get the first node in the list of nodes dominated by a given block. */
-ir_node *get_Block_dominated_first(const ir_node *bl)
-{
+ir_node *get_Block_dominated_first(const ir_node *bl) {
assert(is_Block(bl));
return get_dom_info(bl)->first;
}
/* Get the next node in a list of nodes which are dominated by some
* other node. */
-ir_node *get_Block_dominated_next(const ir_node *bl)
-{
+ir_node *get_Block_dominated_next(const ir_node *bl) {
assert(is_Block(bl));
return get_dom_info(bl)->next;
}
/* Check, if a block post dominates another block. */
-int block_postdominates(const ir_node *a, const ir_node *b)
-{
+int block_postdominates(const ir_node *a, const ir_node *b) {
const ir_dom_info *ai, *bi;
if (is_Block(a) && is_Block(b)) {
return 0;
}
+/* Check, if a block strictly dominates another block. */
+int block_strictly_postdominates(const ir_node *a, const ir_node *b) {
+ return (a != b) && block_postdominates(a, b);
+}
+
+
/* Get the first node in the list of nodes post dominated by a given block. */
-ir_node *get_Block_postdominated_first(const ir_node *bl)
-{
+ir_node *get_Block_postdominated_first(const ir_node *bl) {
assert(is_Block(bl));
return get_pdom_info(bl)->first;
}
/* Get the next node in a list of nodes which are post dominated by some
* other node. */
-ir_node *get_Block_postdominated_next(const ir_node *bl)
-{
+ir_node *get_Block_postdominated_next(const ir_node *bl) {
assert(is_Block(bl));
return get_pdom_info(bl)->next;
}