/* Copyright (C) 1998 - 2000 by Universitaet Karlsruhe
-** All rights reserved.
-**
-** Authors: Martin Trapp, Christian Schaefer
-**
-**
+* All rights reserved.
+*
+* Authors: Martin Trapp, Christian Schaefer
+*
+*
*/
+/* $Id$ */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+# include <string.h>
+
# include "ircons.h"
# include "irgraph_t.h"
-# include "irprog.h"
+# include "irprog_t.h"
# include "iropt_t.h"
# include "array.h"
# include "irgmod.h"
+# include "mangle.h"
ir_graph *current_ir_graph;
+INLINE ir_graph *get_current_ir_graph(void) {
+ return current_ir_graph;
+}
+INLINE void set_current_ir_graph(ir_graph *graph) {
+ current_ir_graph = graph;
+}
-#if USE_EXPICIT_PHI_IN_STACK
+
+bool interprocedural_view = false;
+INLINE bool get_interprocedural_view(void) {
+ return interprocedural_view;
+}
+INLINE void set_interprocedural_view(bool state) {
+ interprocedural_view = state;
+}
+
+static ident* frame_type_suffix = NULL;
+void init_irgraph(void) {
+ frame_type_suffix = id_from_str(FRAME_TP_SUFFIX, strlen(FRAME_TP_SUFFIX));
+}
+
+#if USE_EXPLICIT_PHI_IN_STACK
/* really defined in ircons.c */
typedef struct Phi_in_stack Phi_in_stack;
Phi_in_stack *new_Phi_in_stack();
+void free_Phi_in_stack(Phi_in_stack *s);
#endif
/* Allocates a list of nodes:
current_ir_graph = res;
add_irp_irg(res); /* remember this graph global. */
- /** Internal information for graph construction either held in the graph or
- *** initialized for each graph. **/
+/**
+ * initialized for each graph. **/
+#if PRECISE_EXC_CONTEXT
+ res->n_loc = n_loc + 1 + 1; /* number of local variables that are never
+ dereferenced in this graph plus one for
+ the store plus one for links to fragile
+ operations. n_loc is not the number of
+ parameters to the procedure! */
+#else
res->n_loc = n_loc + 1; /* number of local variables that are never
- dereferenced in this graph plus one for
- the store. This is not the number of parameters
- to the procedure! */
+ dereferenced in this graph plus one for
+ the store. This is not the number of parameters
+ to the procedure! */
+#endif
+
res->visited = 0; /* visited flag, for the ir walker */
res->block_visited=0; /* visited flag, for the 'block'-walker */
-#if USE_EXPICIT_PHI_IN_STACK
+#if USE_EXPLICIT_PHI_IN_STACK
res->Phi_in_stack = new_Phi_in_stack(); /* A stack needed for automatic Phi
generation */
#endif
res->value_table = new_identities (); /* value table for global value
numbering for optimizing use in
iropt.c */
+ res->outs = NULL;
+
+ res->phase_state = phase_building;
+ res->pinned = pinned;
+ res->outs_state = no_outs;
+ res->dom_state = no_dom;
- /** Type inforamtion for the procedure of the graph **/
+ /** Type information for the procedure of the graph **/
res->ent = ent;
set_entity_irg(ent, res);
+/**
+ contain "inner" methods as in Pascal. **/
+ res->frame_type = new_type_class(mangle(get_entity_ident(ent), frame_type_suffix));
+ /* Remove type from type list. Must be treated differently than other types. */
+ remove_irp_type_from_list(res->frame_type);
+
/** Nodes needed in every graph **/
res->end_block = new_immBlock ();
res->end = new_End ();
res->start_block = new_immBlock ();
res->start = new_Start ();
- res->bad = new_ir_node (res, res->start_block, op_Bad, mode_T, 0, NULL);
+ res->bad = new_ir_node (NULL, res, res->start_block, op_Bad, mode_T, 0, NULL);
+ res->unknown = new_ir_node (NULL, res, res->start_block, op_Unknown, mode_T, 0, NULL);
/* Proj results of start node */
projX = new_Proj (res->start, mode_X, pns_initial_exec);
set_store (new_Proj (res->start, mode_M, pns_global_store));
- res->frame = new_Proj (res->start, mode_p, pns_frame_base);
- res->globals = new_Proj (res->start, mode_p, pns_globals);
+ res->frame = new_Proj (res->start, mode_P, pns_frame_base);
+ res->globals = new_Proj (res->start, mode_P, pns_globals);
res->args = new_Proj (res->start, mode_T, pns_args);
+#ifdef DEBUG_libfirm
+ res->graph_nr = get_irp_new_node_nr();
+#endif
- add_in_edge(res->start_block, projX);
- // The code generation needs it. leave it in now.
- // Use of this edge is matter of discussion, unresolved. Also possible:
- // add_in_edge(res->start_block, res->start_block), but invalid typed.
+ add_in_edge(res->start_block, projX);
+ /*
+ * The code generation needs it. leave it in now.
+ * Use of this edge is matter of discussion, unresolved. Also possible:
+ * add_in_edge(res->start_block, res->start_block), but invalid typed.
+ */
mature_block (res->current_block);
/** Make a block to start with **/
return res;
}
+
+/* Make a rudimentary ir graph for the constant code.
+ Must look like a correct irg, spare everything else. */
+ir_graph *new_const_code_irg() {
+ ir_graph *res;
+ ir_node *projX;
+
+ res = (ir_graph *) malloc (sizeof (ir_graph));
+ current_ir_graph = res;
+ res->n_loc = 1; /* Only the memory. */
+ res->visited = 0; /* visited flag, for the ir walker */
+ res->block_visited=0; /* visited flag, for the 'block'-walker */
+#if USE_EXPLICIT_PHI_IN_STACK
+ res->Phi_in_stack = NULL;
+#endif
+ res->obst = (struct obstack *) xmalloc (sizeof (struct obstack));
+ obstack_init (res->obst);
+ res->phase_state = phase_building;
+ res->pinned = pinned;
+ res->value_table = new_identities (); /* value table for global value
+ numbering for optimizing use in
+ iropt.c */
+ res->ent = NULL;
+ res->frame_type = NULL;
+ res->start_block = new_immBlock ();
+ res->end_block = new_immBlock ();
+ res->end = new_End ();
+ mature_block(get_cur_block());
+ res->bad = new_ir_node (NULL, res, res->start_block, op_Bad, mode_T, 0, NULL);
+ res->unknown = new_ir_node (NULL, res, res->start_block, op_Unknown, mode_T, 0, NULL);
+ res->start = new_Start ();
+ /* Proj results of start node */
+ projX = new_Proj (res->start, mode_X, pns_initial_exec);
+ set_store (new_Proj (res->start, mode_M, pns_global_store));
+ add_in_edge(res->start_block, projX);
+ mature_block (res->current_block);
+ add_in_edge (new_immBlock (), projX);
+ mature_block(get_cur_block());
+ /* Set the visited flag high enough that the block will never be visited. */
+ set_irn_visited(get_cur_block(), -1);
+ set_Block_block_visited(get_cur_block(), -1);
+ set_Block_block_visited(res->start_block, -1);
+ return res;
+}
+
+/* Frees the passed irgraph.
+ Deallocates all nodes in this graph and the ir_graph structure.
+ Sets the field irgraph in the corresponding entity to NULL.
+ Does not remove the irgraph from the list in irprog (requires
+ inefficient search, call remove_irp_irg by hand).
+ Does not free types, entities or modes that are used only by this
+ graph, nor the entity standing for this graph. */
+void free_ir_graph (ir_graph *irg) {
+ set_entity_irg(irg->ent, NULL);
+ free(irg->obst);
+#if USE_EXPLICIT_PHI_IN_STACK
+ free_Phi_in_stack(irg->Phi_in_stack);
+#endif
+ free(irg);
+}
+
/* access routines for all ir_graph attributes:
templates:
{attr type} get_irg_{attribute name} (ir_graph *irg);
void set_irg_{attr name} (ir_graph *irg, {attr type} {attr}); */
+/* Outputs a unique number for this node */
+
+INLINE long
+get_irg_graph_nr(ir_graph *irg) {
+ assert(irg);
+#ifdef DEBUG_libfirm
+ return irg->graph_nr;
+#else
+ return 0;
+#endif
+}
+
ir_node *
get_irg_start_block (ir_graph *irg)
{
irg->bad = node;
}
+ir_node *
+get_irg_unknown (ir_graph *irg)
+{
+ return irg->unknown;
+}
+
+void
+set_irg_unknown (ir_graph *irg, ir_node *node)
+{
+ irg->unknown = node;
+}
+
ir_node *
get_irg_current_block (ir_graph *irg)
{
irg->ent = ent;
}
+type *
+get_irg_frame_type (ir_graph *irg)
+{
+ assert(irg && irg->frame_type);
+ return irg->frame_type;
+}
+
+void
+set_irg_frame_type (ir_graph *irg, type *ftp)
+{
+ irg->frame_type = ftp;
+}
+
+
+/* To test for a frame type */
int
-get_irg_n_loc (ir_graph *irg)
+is_frame_type(type *ftp) {
+ return ((is_class_type(ftp) || is_struct_type(ftp)) &&
+ id_is_suffix(id_from_str(FRAME_TP_SUFFIX, strlen(FRAME_TP_SUFFIX)),
+ get_type_ident(ftp)));
+}
+
+int
+get_irg_n_locs (ir_graph *irg)
{
- return irg->n_loc;
+#if PRECISE_EXC_CONTEXT
+ return irg->n_loc - 1 - 1;
+#else
+ return irg->n_loc - 1;
+#endif
}
void
set_irg_n_loc (ir_graph *irg, int n_loc)
{
- irg->n_loc = n_loc;
+#if PRECISE_EXC_CONTEXT
+ irg->n_loc = n_loc + 1 + 1;
+#else
+ irg->n_loc = n_loc + 1;
+#endif
+}
+
+
+
+/* Returns the obstack associated with the graph. */
+struct obstack *get_irg_obstack(ir_graph *irg) {
+ return irg->obst;
+}
+
+/*
+ * Returns true if the node n is allocated on the storage of graph irg.
+ *
+ * Implementation is GLIBC specific as is uses the internal _obstack_chunk implementation.
+ */
+int node_is_in_irgs_storage(ir_graph *irg, ir_node *n)
+{
+ struct _obstack_chunk *p;
+
+ /*
+ * checks wheater the ir_node pointer i on the obstack.
+ * A more sophisticated chaeck would test the "whole" ir_node
+ */
+ for (p = irg->obst->chunk; p; p = p->prev) {
+ if (((char *)p->contents <= (char *)n) && ((char *)n < (char *)p->limit))
+ return 1;
+ }
+
+ return 0;
+}
+
+irg_phase_state
+get_irg_phase_state (ir_graph *irg) {
+ return irg->phase_state;
}
+void
+set_irg_phase_low(ir_graph *irg) {
+ irg->phase_state = phase_low;
+}
+
+op_pinned
+get_irg_pinned (ir_graph *irg) {
+ return irg->pinned;
+}
+
+irg_outs_state
+get_irg_outs_state(ir_graph *irg) {
+ return irg->outs_state;
+}
+
+void
+set_irg_outs_inconsistent(ir_graph *irg) {
+ irg->outs_state = outs_inconsistent;
+}
+
+irg_dom_state
+get_irg_dom_state(ir_graph *irg) {
+ return irg->dom_state;
+}
+
+void
+set_irg_dom_inconsistent(ir_graph *irg) {
+ irg->dom_state = dom_inconsistent;
+}
+
+INLINE void
+set_irg_pinned (ir_graph *irg, op_pinned p) {
+ irg->pinned = p;
+}
+
+INLINE void
+set_irg_link (ir_graph *irg, void *thing) {
+ irg->link = thing;
+}
+
+INLINE void *
+get_irg_link (ir_graph *irg) {
+ return irg->link;
+}
+
+/* maximum visited flag content of all ir_graph visited fields. */
+static int max_irg_visited = 0;
+
unsigned long
get_irg_visited (ir_graph *irg)
{
set_irg_visited (ir_graph *irg, unsigned long visited)
{
irg->visited = visited;
+ if (irg->visited > max_irg_visited) {
+ max_irg_visited = irg->visited;
+ }
}
void
inc_irg_visited (ir_graph *irg)
{
- irg->visited = irg->visited++;
+ if (++irg->visited > max_irg_visited) {
+ max_irg_visited = irg->visited;
+ }
+}
+
+unsigned long
+get_max_irg_visited(void)
+{
+ //int i;
+ //for(i = 0; i < get_irp_n_irgs(); i++)
+ // assert(max_irg_visited >= get_irg_visited(get_irp_irg(i)));
+ return max_irg_visited;
+}
+
+void set_max_irg_visited(int val) {
+ max_irg_visited = val;
+}
+
+unsigned long
+inc_max_irg_visited(void)
+{
+ //int i;
+ // for(i = 0; i < get_irp_n_irgs(); i++)
+ //assert(max_irg_visited >= get_irg_visited(get_irp_irg(i)));
+ max_irg_visited++;
+ return max_irg_visited;
}
unsigned long
void
inc_irg_block_visited (ir_graph *irg)
{
- irg->block_visited = irg->block_visited++;
+ ++irg->block_visited;
}
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