/**
* @file
* @brief be transform helper extracted from the ia32 backend.
- * @author Michael Beck
+ * @author Matthias Braun, Michael Beck
* @date 14.06.2007
* @version $Id$
*/
#include "iropt_t.h"
#include "irnode_t.h"
#include "irgraph_t.h"
-#include "ircons.h"
+#include "ircons_t.h"
#include "irhooks.h"
#include "iredges.h"
#include "irouts.h"
node is already transformed */
waitq *worklist; /**< worklist of nodes that still need to be
transformed */
- ir_node **old_anchors;/**< the list of anchors nodes in the old irg */
+ ir_node *old_anchor; /**< the old anchor node in the old irg */
} be_transform_env_t;
return (ir_node*) get_irn_link(old_node);
}
-ir_node *be_get_old_anchor(unsigned anchor) {
- return env.old_anchors[anchor];
-}
-
void be_duplicate_deps(ir_node *old_node, ir_node *new_node) {
int i;
int deps = get_irn_deps(old_node);
static void fix_loops(ir_node *node) {
int i, arity;
+ assert(node_is_in_irgs_storage(env.irg, node));
+
if (irn_visited(node))
return;
mark_irn_visited(node);
- assert(node_is_in_irgs_storage(env.irg, node));
-
if (! is_Block(node)) {
ir_node *block = get_nodes_block(node);
ir_node *new_block = get_irn_link(block);
fix_loops(in);
}
+ /* fix proj block */
+ if(is_Proj(node)) {
+ set_nodes_block(node, get_nodes_block(get_Proj_pred(node)));
+ }
arity = get_irn_deps(node);
for (i = 0; i < arity; ++i) {
return be_transform_node(place);
}
+ir_node *be_get_old_anchor(int anchor)
+{
+ return get_irn_n(env.old_anchor, anchor);
+}
+
+static void pre_transform_anchor(int anchor)
+{
+ ir_node *old_anchor_node = get_irn_n(env.old_anchor, anchor);
+ ir_node *transformed = be_transform_node(old_anchor_node);
+ set_irg_anchor(current_ir_graph, anchor, transformed);
+}
+
/**
* Transforms all nodes. Deletes the old obstack and creates a new one.
*/
-static void transform_nodes(ir_graph *irg, arch_pretrans_nodes *pre_transform, void *cg) {
- int i;
- ir_node *old_end;
+static void transform_nodes(ir_graph *irg, arch_pretrans_nodes *pre_transform,
+ void *cg)
+{
+ int i;
+ ir_node *old_end, *new_anchor;
hook_dead_node_elim(irg, 1);
env.irg = irg;
env.visited = get_irg_visited(irg);
env.worklist = new_waitq();
- env.old_anchors = alloca(anchor_max * sizeof(env.old_anchors[0]));
+ env.old_anchor = irg->anchor;
old_end = get_irg_end(irg);
/* put all anchor nodes in the worklist */
- for (i = 0; i < anchor_max; ++i) {
- ir_node *anchor = irg->anchors[i];
+ for (i = get_irg_n_anchors(irg) - 1; i >= 0; --i) {
+ ir_node *anchor = get_irg_anchor(irg, i);
if (anchor == NULL)
continue;
waitq_put(env.worklist, anchor);
-
- /* remember anchor */
- env.old_anchors[i] = anchor;
- /* and set it to NULL to make sure we don't accidently use it */
- irg->anchors[i] = NULL;
}
+ new_anchor = new_Anchor(irg);
+ irg->anchor = new_anchor;
+
/* pre transform some anchors (so they are available in the other transform
* functions) */
- set_irg_bad(irg, be_transform_node(env.old_anchors[anchor_bad]));
- set_irg_no_mem(irg, be_transform_node(env.old_anchors[anchor_no_mem]));
- set_irg_start_block(irg, be_transform_node(env.old_anchors[anchor_start_block]));
- set_irg_start(irg, be_transform_node(env.old_anchors[anchor_start]));
- set_irg_frame(irg, be_transform_node(env.old_anchors[anchor_frame]));
+ pre_transform_anchor(anchor_bad);
+ pre_transform_anchor(anchor_no_mem);
+ pre_transform_anchor(anchor_start_block);
+ pre_transform_anchor(anchor_start);
+ pre_transform_anchor(anchor_frame);
if (pre_transform)
(*pre_transform)(cg);
/* fix loops and set new anchors*/
inc_irg_visited(irg);
- for (i = 0; i < anchor_max; ++i) {
- ir_node *anchor = env.old_anchors[i];
+ for (i = get_irg_n_anchors(irg) - 1; i >= 0; --i) {
+ ir_node *anchor = get_irn_n(env.old_anchor, i);
if (anchor == NULL)
continue;
anchor = get_irn_link(anchor);
fix_loops(anchor);
- assert(irg->anchors[i] == NULL || irg->anchors[i] == anchor);
- irg->anchors[i] = anchor;
+ set_irn_n(new_anchor, i, anchor);
}
+ set_irn_n(new_anchor, -1, get_irg_anchor(irg, anchor_end_block));
del_waitq(env.worklist);
free_End(old_end);
hook_dead_node_elim(irg, 0);
}
+/**
+ * Transform helper for blocks.
+ */
+static ir_node *gen_Block(ir_node *node) {
+ ir_graph *irg = current_ir_graph;
+ dbg_info *dbgi = get_irn_dbg_info(node);
+ ir_node *old_start_block = get_irn_n(env.old_anchor, anchor_start_block);
+ ir_node *block;
+
+ /*
+ * We replace the ProjX from the start node with a jump,
+ * so the startblock has no preds anymore now
+ */
+ if (node == old_start_block) {
+ return new_rd_Block(dbgi, irg, 0, NULL);
+ }
+
+ /* we use the old blocks for now, because jumps allow cycles in the graph
+ * we have to fix this later */
+ block = new_ir_node(dbgi, irg, NULL, get_irn_op(node), get_irn_mode(node),
+ get_irn_arity(node), get_irn_in(node) + 1);
+ copy_node_attr(node, block);
+
+#ifdef DEBUG_libfirm
+ block->node_nr = node->node_nr;
+#endif
+ be_set_transformed_node(node, block);
+
+ /* put the preds in the worklist */
+ be_enqueue_preds(node);
+
+ return block;
+}
+
+static ir_node *gen_End(ir_node *node) {
+ /* end has to be duplicated manually because we need a dynamic in array */
+ ir_graph *irg = current_ir_graph;
+ dbg_info *dbgi = get_irn_dbg_info(node);
+ ir_node *block = be_transform_node(get_nodes_block(node));
+ int i, arity;
+ ir_node *new_end;
+
+ new_end = new_ir_node(dbgi, irg, block, op_End, mode_X, -1, NULL);
+ copy_node_attr(node, new_end);
+ be_duplicate_deps(node, new_end);
+
+ set_irg_end(irg, new_end);
+ be_set_transformed_node(new_end, new_end);
+
+ /* transform preds */
+ arity = get_irn_arity(node);
+ for (i = 0; i < arity; ++i) {
+ ir_node *in = get_irn_n(node, i);
+ ir_node *new_in = be_transform_node(in);
+
+ add_End_keepalive(new_end, new_in);
+ }
+
+ return new_end;
+}
+
void be_transform_graph(be_irg_t *birg, arch_pretrans_nodes *func, void *cg)
{
ir_graph *irg = birg->irg;
free_trouts();
free_loop_information(irg);
set_irg_doms_inconsistent(irg);
- be_invalidate_liveness(birg);
+
+ be_liveness_invalidate(be_get_birg_liveness(birg));
be_invalidate_dom_front(birg);
/* create a new obstack */
del_identities(irg->value_table);
irg->value_table = new_identities();
+ /* enter special helper */
+ op_Block->ops.generic = (op_func)gen_Block;
+ op_End->ops.generic = (op_func)gen_End;
+
/* do the main transformation */
transform_nodes(irg, func, cg);
/* recalculate edges */
edges_deactivate(irg);
edges_activate(irg);
+
+ if (birg->lv) {
+ be_liveness_free(birg->lv);
+ birg->lv = be_liveness(birg);
+ }
}
projects / libfirm / blobdiff