@@@ @todo Ev. replace by bitfield! */
ir_extblk *extblk; /**< the extended basic block this block belongs to */
+ struct list_head succ_head; /**< A list head for all successor edges of a block. */
+
} block_attr;
/** Start attributes */
}
/**
- * Returns the pinned state of a node.
+ * Returns whether the node _always_ must be pinned.
+ * I.e., the node is not floating after global cse.
+ *
* Intern version of libFirm.
*/
static INLINE op_pin_state
_get_irn_pinned(const ir_node *node) {
op_pin_state state;
assert(node && _is_ir_node(node));
+ /* Check opcode */
state = _get_op_pinned(_get_irn_op(node));
+
if (state >= op_pin_state_exc_pinned)
return get_opt_fragile_ops() ? node->attr.except.pin_state : op_pin_state_pinned;
return state;
}
+static INLINE op_pin_state
+_is_irn_pinned_in_irg(const ir_node *node) {
+ if (get_irg_pinned(get_irn_irg(node)) == op_pin_state_floats)
+ return get_irn_pinned(node);
+ return op_pin_state_pinned;
+}
+
static INLINE int
_is_unop(const ir_node *node) {
assert(node && _is_ir_node(node));
return (_get_irn_op(node) == op_Block);
}
+static INLINE int
+_get_Block_n_cfgpreds (ir_node *node) {
+ assert(_is_Block(node));
+ return _get_irn_arity(node);
+}
+
+static INLINE ir_node *
+_get_Block_cfgpred (ir_node *node, int pos) {
+ assert(0 <= pos && pos < get_irn_arity(node));
+ assert(_is_Block(node));
+ return _get_irn_n(node, pos);
+}
+
+/* Get the predecessor block.
+ *
+ * Returns the block corresonding to the predecessor pos.
+ *
+ * There are several ambiguities we resolve with this function:
+ * - The direct predecessor can be a Proj, which is not pinned.
+ * We walk from the predecessor to the next pinned node
+ * (skip_Proj) and return the block that node is in.
+ * - If we encounter the Bad node, this function does not return
+ * Start, but the Bad node.
+ */
+static INLINE ir_node *
+_get_Block_cfgpred_block(ir_node *node, int pos) {
+ ir_node *res = skip_Proj(get_Block_cfgpred(node, pos));
+ if (!is_Bad(res))
+ res = get_nodes_block(res);
+ return res;
+}
+
static INLINE unsigned long
_get_Block_block_visited (ir_node *node) {
assert (node->op == op_Block);
#define irn_not_visited(node) _irn_not_visited(node)
#define set_irn_link(node, link) _set_irn_link(node, link)
#define get_irn_link(node) _get_irn_link(node)
+#define get_irn_pinned(node) _get_irn_pinned(node)
+#define is_irn_pinned_in_irg(node) _is_irn_pinned_in_irg(node)
#define is_unop(node) _is_unop(node)
#define is_binop(node) _is_binop(node)
#define is_Const(node) _is_Const(node)
#define is_Bad(node) _is_Bad(node)
#define is_no_Block(node) _is_no_Block(node)
#define is_Block(node) _is_Block(node)
+#define get_Block_n_cfgpreds(node) _get_Block_n_cfgpreds(node)
+#define get_Block_cfgpred(node, pos) _get_Block_cfgpred(node, pos)
+#define get_Block_cfgpred_block(node, pos) _get_Block_cfgpred_block(node, pos)
#define get_Block_block_visited(node) _get_Block_block_visited(node)
#define set_Block_block_visited(node, visit) _set_Block_block_visited(node, visit)
#define mark_Block_block_visited(node) _mark_Block_block_visited(node)