/*
- * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
+ * Copyright (C) 1995-2011 University of Karlsruhe. All right reserved.
*
* This file is part of libFirm.
*
#include "irbackedge_t.h"
#include "irtools.h"
#include "irprintf.h"
+#include "irpass_t.h"
+#include "iropt_t.h"
-/* the famous clear_link implementation. */
-void firm_clear_link(ir_node *n, void *env) {
+void firm_clear_link(ir_node *n, void *env)
+{
(void) env;
set_irn_link(n, NULL);
}
-/*
- * Copies a node to a new irg. The Ins of the new node point to
- * the predecessors on the old irg. n->link points to the new node.
- *
- * Does NOT copy standard nodes like Start, End etc that are fixed
- * in an irg. Instead, the corresponding nodes of the new irg are returned.
- * Note further, that the new nodes have no block.
- */
-void
-copy_irn_to_irg(ir_node *n, ir_graph *irg) {
+void firm_clear_node_and_phi_links(ir_node *n, void *env)
+{
+ (void) env;
+ set_irn_link(n, NULL);
+ if (is_Block(n))
+ set_Block_phis(n, NULL);
+ else if (is_Phi(n))
+ set_Phi_next(n, NULL);
+}
+
+void firm_clear_block_phis(ir_node *node, void *env)
+{
+ (void) env;
+ if (is_Block(node)) {
+ set_Block_phis(node, NULL);
+ } else if (is_Phi(node)) {
+ set_Phi_next(node, NULL);
+ }
+}
+
+void firm_collect_block_phis(ir_node *node, void *env)
+{
+ (void) env;
+ if (is_Phi(node))
+ add_Block_phi(get_nodes_block(node), node);
+}
+
+void copy_irn_to_irg(ir_node *n, ir_graph *irg)
+{
ir_op *op = get_irn_op(n);
ir_graph *old_irg;
ir_node *nn = NULL;
/* do not copy standard nodes */
- if (op == op_Bad)
- nn = get_irg_bad(irg);
- else if (op == op_NoMem)
+ if (op == op_NoMem)
n = get_irg_no_mem(irg);
else if (op == op_Block) {
old_irg = get_irn_irg(n);
/* Copy the attributes. These might point to additional data. If this
was allocated on the old obstack the pointers now are dangling. This
frees e.g. the memory of the graph_arr allocated in new_immBlock. */
- copy_node_attr(n, nn);
- new_backedge_info(nn);
+ copy_node_attr(irg, n, nn);
set_irn_link(n, nn);
- /* fix the irg for blocks */
- if (is_Block(nn)) {
- nn->attr.block.irg = irg;
+ /* fix the irg for nodes containing a reference to it */
+ if (ir_has_irg_ref(nn)) {
+ nn->attr.block.irg.irg = irg;
+ }
+}
- /* we cannot allow blocks WITHOUT macroblock input */
- set_Block_MacroBlock(nn, get_Block_MacroBlock(n));
+ir_node *irn_copy_into_irg(const ir_node *node, ir_graph *irg)
+{
+ ir_node *block = NULL;
+ ir_op *op = get_irn_op(node);
+ int arity = get_irn_arity(node);
+ dbg_info *dbgi = get_irn_dbg_info(node);
+ ir_mode *mode = get_irn_mode(node);
+ ir_node *res;
+ int n_deps;
+ int i;
+
+ if (op != op_Block)
+ block = get_nodes_block(node);
+
+ if (op->opar == oparity_dynamic) {
+ int i;
+ res = new_ir_node(dbgi, irg, block, op, mode, -1, NULL);
+ for (i = 0; i < arity; ++i) {
+ ir_node *in = get_irn_n(node, i);
+ add_irn_n(res, in);
+ }
+ } else {
+ ir_node **ins = get_irn_in(node)+1;
+ res = new_ir_node(dbgi, irg, block, op, mode, arity, ins);
}
+
+ /* copy the attributes */
+ copy_node_attr(irg, node, res);
+
+ /* duplicate dependency edges */
+ n_deps = get_irn_deps(node);
+ for (i = 0; i < n_deps; ++i) {
+ ir_node *dep = get_irn_dep(node, i);
+ add_irn_dep(res, dep);
+ }
+
+ return res;
}
-/*
- * Creates an exact copy of a node.
- * The copy resides in the same graph in the same block.
- */
-ir_node *exact_copy(const ir_node *n) {
- ir_graph *irg = get_irn_irg(n);
- ir_node *res, *block = NULL;
+ir_node *exact_copy(const ir_node *node)
+{
+ return irn_copy_into_irg(node, get_irn_irg(node));
+}
- if (is_no_Block(n))
- block = get_nodes_block(n);
+static ir_node *get_new_node(const ir_node *old_node)
+{
+ return (ir_node*) get_irn_link(old_node);
+}
- res = new_ir_node(get_irn_dbg_info(n),
- irg,
- block,
- get_irn_op(n),
- get_irn_mode(n),
- get_irn_arity(n),
- get_irn_in(n) + 1);
+void irn_rewire_inputs(ir_node *node)
+{
+ ir_node *new_node;
+ int arity;
+ int i;
+ new_node = get_new_node(node);
- /* Copy the attributes. These might point to additional data. If this
- was allocated on the old obstack the pointers now are dangling. This
- frees e.g. the memory of the graph_arr allocated in new_immBlock. */
- copy_node_attr(n, res);
- new_backedge_info(res);
+ if (!is_Block(node)) {
+ ir_node *block = get_nodes_block(node);
+ ir_node *new_block = get_new_node(block);
+ set_nodes_block(new_node, new_block);
+ }
- if (is_Block(n)) {
- set_Block_MacroBlock(res, get_Block_MacroBlock(n));
+ arity = get_irn_arity(new_node);
+ for (i = 0; i < arity; ++i) {
+ ir_node *in = get_irn_n(node, i);
+ ir_node *new_in = get_new_node(in);
+ set_irn_n(new_node, i, new_in);
}
- return res;
+
+ /* Now the new node is complete. We can add it to the hash table for CSE. */
+ add_identities(new_node);
}
-/*
- * Dump a pset containing Firm objects.
- */
-void firm_pset_dump(pset *set) {
+void firm_pset_dump(pset *set)
+{
void *obj;
- foreach_pset(set, obj) {
+ foreach_pset(set, void*, obj) {
ir_fprintf(stderr, "%+F\n", obj);
}
}
projects / libfirm / blobdiff