-/* Copyright (C) 1998 - 2000 by Universitaet Karlsruhe
-** All rights reserved.
-**
-** Authors: Martin Trapp, Christian Schaefer
-**
-**
-*/
+/*
+ * Project: libFIRM
+ * File name: ir/ir/irgraph.c
+ * Purpose: Entry point to the representation of procedure code.
+ * Author: Martin Trapp, Christian Schaefer
+ * Modified by: Goetz Lindenmaier
+ * Created:
+ * CVS-ID: $Id$
+ * Copyright: (c) 1998-2003 Universität Karlsruhe
+ * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+# include <string.h>
# include "ircons.h"
-# include "irgraph.h"
-# include "irprog.h"
-# include "iropt.h"
+# include "irgraph_t.h"
+# include "irprog_t.h"
+# include "iropt_t.h"
+# include "irflag_t.h"
# include "array.h"
# include "irgmod.h"
+# include "mangle.h"
+# include "irouts.h"
+# include "firmstat.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;
+}
+
+
+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 = new_id_from_chars(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:
- The start block containing a start node and Proj nodes for it's four
and optimization.
*/
ir_graph *
-new_ir_graph (entity *ent, int params)
+new_ir_graph (entity *ent, int n_loc)
{
ir_graph *res;
ir_node *first_block;
ir_node *projX;
res = (ir_graph *) malloc (sizeof (ir_graph));
+ memset(res, 0, sizeof (ir_graph));
+ res->kind = k_ir_graph;
+
+ /* inform statistics here, as blocks will be already build on this graph */
+ stat_new_graph(res, ent);
+
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. **/
- res->params = params + 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! */
+ /*-- initialized for each graph. --*/
+ if (get_opt_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! */
+ }
+
res->visited = 0; /* visited flag, for the ir walker */
- res->block_visited=0; /* visited flag, for the 'block'-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->kind = k_ir_graph;
res->obst = (struct obstack *) xmalloc (sizeof (struct obstack));
obstack_init (res->obst);
res->value_table = new_identities (); /* value table for global value
- numbering for optimizing use in
- iropt.c */
-
- /** Type inforamtion for the procedure of the graph **/
+ numbering for optimizing use in
+ iropt.c */
+ res->outs = NULL;
+
+ res->phase_state = phase_building;
+ res->op_pin_state_pinned = op_pin_state_pinned;
+ res->outs_state = outs_none;
+ res->dom_state = dom_none;
+ res->typeinfo_state = irg_typeinfo_none;
+ res->loopinfo_state = loopinfo_none;
+
+ /*-- Type information for the procedure of the graph --*/
res->ent = ent;
set_entity_irg(ent, res);
- /** Nodes needed in every graph **/
- res->end_block = new_Block ();
- res->end = new_End ();
+ /*-- a class type so that it can contain "inner" methods as in Pascal. --*/
+ res->frame_type = new_type_class(mangle(get_entity_ident(ent), frame_type_suffix));
- res->start_block = new_Block ();
- res->start = new_Start ();
- res->bad = new_ir_node (res, res->start_block, op_Bad, mode_T, 0, NULL);
+ /* 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->end_reg = res->end;
+ res->end_except = res->end;
+
+ res->start_block = new_immBlock();
+ res->start = new_Start();
+ res->bad = new_ir_node(NULL, res, res->start_block, op_Bad, 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->args = new_Proj (res->start, mode_T, pns_args);
+ projX = new_Proj (res->start, mode_X, pn_Start_X_initial_exec);
+ res->frame = new_Proj (res->start, mode_P_mach, pn_Start_P_frame_base); res->globals = new_Proj (res->start, mode_P_mach, pn_Start_P_globals);
+ res->initial_mem = new_Proj (res->start, mode_M, pn_Start_M);
+ res->args = new_Proj (res->start, mode_T, pn_Start_T_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.
+ set_store(res->initial_mem);
- mature_block (res->current_block);
+ add_immBlock_pred(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_immBlock_pred(res->start_block, res->start_block), but invalid typed.
+ */
+ mature_immBlock (res->current_block);
- /** Make a block to start with **/
- first_block = new_Block ();
- add_in_edge (first_block, projX);
+ /*-- Make a block to start with --*/
+ first_block = new_immBlock();
+ add_immBlock_pred (first_block, projX);
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(void) {
+ ir_graph *res;
+ ir_node *projX;
+
+ res = (ir_graph *) malloc (sizeof(*res));
+ memset(res, 0, sizeof(*res));
+
+ /* inform statistics here, as blocks will be already build on this graph */
+ stat_new_graph(res, NULL);
+
+ 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->kind = k_ir_graph;
+ res->obst = (struct obstack *) xmalloc (sizeof (struct obstack));
+ obstack_init (res->obst);
+ res->phase_state = phase_building;
+ res->op_pin_state_pinned = op_pin_state_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 ();
+ res->end_reg = res->end;
+ res->end_except = res->end;
+ mature_immBlock(get_cur_block()); /* mature the end block */
+ res->bad = new_ir_node (NULL, res, res->start_block, op_Bad, mode_T, 0, NULL);
+ res->start = new_Start ();
+ res->initial_mem = new_Proj (res->start, mode_M, pn_Start_M);
+
+ /* Proj results of start node */
+ projX = new_Proj (res->start, mode_X, pn_Start_X_initial_exec);
+ add_immBlock_pred (res->start_block, projX);
+ mature_immBlock (res->start_block); /* mature the start block */
+
+ add_immBlock_pred (new_immBlock (), projX);
+ mature_immBlock (get_cur_block()); /* mature the 'body' block for expressions */
+ /* 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);
+ set_irn_visited(res->start_block, -1);
+ set_irn_visited(res->bad, -1);
+
+ res->phase_state = phase_high;
+ return res;
+}
+
+/* Defined in iropt.c */
+void del_identities (pset *value_table);
+
+/* 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) {
+
+ stat_free_graph(irg);
+ if (irg->outs_state != outs_none) free_outs(irg);
+ if (irg->frame_type) free_type(irg->frame_type);
+ if (irg->value_table) del_identities(irg->value_table);
+ if (irg->ent) {
+ peculiarity pec = get_entity_peculiarity (irg->ent);
+ set_entity_peculiarity (irg->ent, peculiarity_description);
+ set_entity_irg(irg->ent, NULL); /* not set in const code irg */
+ set_entity_peculiarity (irg->ent, pec);
+ }
+
+ free_End(irg->end);
+ obstack_free(irg->obst,NULL);
+ free(irg->obst);
+#if USE_EXPLICIT_PHI_IN_STACK
+ free_Phi_in_stack(irg->Phi_in_stack);
+#endif
+ irg->kind = k_BAD;
+ 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}); */
+int
+(is_ir_graph)(void *thing) {
+ return __is_ir_graph(thing);
+}
+
+/* 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 (long)irg;
+#endif
+}
+
ir_node *
-get_irg_start_block (ir_graph *irg)
-{
- return irg->start_block;
+(get_irg_start_block)(ir_graph *irg) {
+ return __get_irg_start_block(irg);
}
void
-set_irg_start_block (ir_graph *irg, ir_node *node)
-{
- irg->start_block = node;
+(set_irg_start_block)(ir_graph *irg, ir_node *node) {
+ __set_irg_start_block(irg, node);
}
ir_node *
-get_irg_start (ir_graph *irg)
-{
- return irg->start;
+(get_irg_start)(ir_graph *irg) {
+ return __get_irg_start(irg);
}
void
-set_irg_start(ir_graph *irg, ir_node *node)
-{
- irg->start = node;
+(set_irg_start)(ir_graph *irg, ir_node *node) {
+ __set_irg_start(irg, node);
}
ir_node *
-get_irg_end_block (ir_graph *irg)
-{
- return irg->end_block;
+(get_irg_end_block)(ir_graph *irg) {
+ return __get_irg_end_block(irg);
}
void
-set_irg_end_block (ir_graph *irg, ir_node *node)
-{
- irg->end_block = node;
+(set_irg_end_block)(ir_graph *irg, ir_node *node) {
+ __set_irg_end_block(irg, node);
}
ir_node *
-get_irg_end (ir_graph *irg)
-{
- return irg->end;
+(get_irg_end)(ir_graph *irg) {
+ return __get_irg_end(irg);
}
void
-set_irg_end (ir_graph *irg, ir_node *node)
-{
- irg->end = node;
+(set_irg_end)(ir_graph *irg, ir_node *node) {
+ __set_irg_end(irg, node);
}
ir_node *
-get_irg_cstore (ir_graph *irg)
-{
- return irg->cstore;
+(get_irg_end_reg)(ir_graph *irg) {
+ return __get_irg_end_reg(irg);
+}
+
+void set_irg_end_reg (ir_graph *irg, ir_node *node) {
+ assert(get_irn_op(node) == op_EndReg || get_irn_op(node) == op_End);
+ irg->end_reg = node;
+}
+
+ir_node *
+(get_irg_end_except)(ir_graph *irg) {
+ return __get_irg_end_except(irg);
+}
+
+void set_irg_end_except (ir_graph *irg, ir_node *node) {
+ assert(get_irn_op(node) == op_EndExcept || get_irn_op(node) == op_End);
+ irg->end_except = node;
+}
+
+ir_node *
+(get_irg_cstore)(ir_graph *irg) {
+ return __get_irg_cstore(irg);
}
void
-set_irg_cstore (ir_graph *irg, ir_node *node)
-{
- irg->cstore = node;
+(set_irg_cstore)(ir_graph *irg, ir_node *node) {
+ __set_irg_cstore(irg, node);
}
ir_node *
-get_irg_frame (ir_graph *irg)
-{
- return irg->frame;
+(get_irg_frame)(ir_graph *irg) {
+ return __get_irg_frame(irg);
}
void
-set_irg_frame (ir_graph *irg, ir_node *node)
-{
- irg->frame = node;
+(set_irg_frame)(ir_graph *irg, ir_node *node) {
+ __set_irg_frame(irg, node);
}
ir_node *
-get_irg_globals (ir_graph *irg)
-{
- return irg->globals;
+(get_irg_globals)(ir_graph *irg) {
+ return __get_irg_globals(irg);
}
void
-set_irg_globals (ir_graph *irg, ir_node *node)
-{
- irg->globals = node;
+(set_irg_globals)(ir_graph *irg, ir_node *node) {
+ __set_irg_globals(irg, node);
}
ir_node *
-get_irg_args (ir_graph *irg)
+(get_irg_initial_mem)(ir_graph *irg)
{
- return irg->args;
+ return __get_irg_initial_mem(irg);
}
void
-set_irg_args (ir_graph *irg, ir_node *node)
-{
- irg->args = node;
+(set_irg_initial_mem)(ir_graph *irg, ir_node *node) {
+ __set_irg_initial_mem(irg, node);
}
ir_node *
-get_irg_bad (ir_graph *irg)
-{
- return irg->bad;
+(get_irg_args)(ir_graph *irg) {
+ return __get_irg_args(irg);
}
void
-set_irg_bad (ir_graph *irg, ir_node *node)
-{
- irg->bad = node;
+(set_irg_args)(ir_graph *irg, ir_node *node) {
+ __set_irg_args(irg, node);
+}
+
+ir_node *
+(get_irg_bad)(ir_graph *irg) {
+ return __get_irg_bad(irg);
}
+void
+(set_irg_bad)(ir_graph *irg, ir_node *node) {
+ __set_irg_bad(irg, node);
+}
+
+/* GL removed: we need unknown with mode for analyses.
ir_node *
-get_irg_current_block (ir_graph *irg)
+get_irg_unknown (ir_graph *irg)
{
- return irg->current_block;
+ return irg->unknown;
}
void
-set_irg_current_block (ir_graph *irg, ir_node *node)
+set_irg_unknown (ir_graph *irg, ir_node *node)
{
- irg->current_block = node;
+ irg->unknown = node;
+}
+*/
+
+ir_node *
+(get_irg_current_block)(ir_graph *irg) {
+ return __get_irg_current_block(irg);
+}
+
+void
+(set_irg_current_block)(ir_graph *irg, ir_node *node) {
+ __set_irg_current_block(irg, node);
}
entity *
-get_irg_ent (ir_graph *irg)
-{
- return irg->ent;
+(get_irg_entity)(ir_graph *irg) {
+ return __get_irg_ent(irg);
}
void
-set_irg_ent (ir_graph *irg, entity *ent)
-{
- irg->ent = ent;
+(set_irg_entity)(ir_graph *irg, entity *ent) {
+ __set_irg_ent(irg, ent);
+}
+
+type *
+(get_irg_frame_type)(ir_graph *irg) {
+ return __get_irg_frame_type(irg);
+}
+
+void
+(set_irg_frame_type)(ir_graph *irg, type *ftp) {
+ __set_irg_frame_type(irg, ftp);
+}
+
+
+/* To test for a frame type */
+int
+is_frame_type(type *ftp) {
+ int i;
+ if (is_class_type(ftp)) {
+ for (i = 0; i < get_irp_n_irgs(); i++) {
+ type *frame_tp = get_irg_frame_type(get_irp_irg(i));
+ if (ftp == frame_tp) return true;
+ }
+ }
+ return false;
}
int
-get_irg_params (ir_graph *irg)
+get_irg_n_locs (ir_graph *irg)
{
- return irg->params;
+ if (get_opt_precise_exc_context())
+ return irg->n_loc - 1 - 1;
+ else
+ return irg->n_loc - 1;
}
void
-set_irg_params (ir_graph *irg, int params)
+set_irg_n_loc (ir_graph *irg, int n_loc)
{
- irg->params = params;
+ if (get_opt_precise_exc_context())
+ irg->n_loc = n_loc + 1 + 1;
+ else
+ irg->n_loc = n_loc + 1;
}
-unsigned long
-get_irg_visited (ir_graph *irg)
+
+
+/* Returns the obstack associated with the graph. */
+struct obstack *
+(get_irg_obstack)(ir_graph *irg) {
+ return __get_irg_obstack(irg);
+}
+
+/*
+ * 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)
{
- return irg->visited;
+ struct _obstack_chunk *p;
+
+ /*
+ * checks wheater the ir_node pointer i on the obstack.
+ * A more sophisticated check 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 __get_irg_phase_state(irg);
+}
+
+void
+(set_irg_phase_low)(ir_graph *irg) {
+ __set_irg_phase_low(irg);
+}
+
+op_pin_state
+(get_irg_pinned)(ir_graph *irg) {
+ return __get_irg_pinned(irg);
+}
+
+irg_outs_state
+(get_irg_outs_state)(ir_graph *irg) {
+ return __get_irg_outs_state(irg);
+}
+
+void
+(set_irg_outs_inconsistent)(ir_graph *irg) {
+ __set_irg_outs_inconsistent(irg);
+}
+
+irg_dom_state
+(get_irg_dom_state)(ir_graph *irg) {
+ return __get_irg_dom_state(irg);
+}
+
+void
+(set_irg_dom_inconsistent)(ir_graph *irg) {
+ __set_irg_dom_inconsistent(irg);
+}
+
+irg_loopinfo_state
+(get_irg_loopinfo_state)(ir_graph *irg) {
+ return __get_irg_loopinfo_state(irg);
+}
+
+void
+(set_irg_loopinfo_state)(ir_graph *irg, irg_loopinfo_state s) {
+ __set_irg_loopinfo_state(irg, s);
+}
+
+void
+set_irg_loopinfo_inconsistent(ir_graph *irg) {
+ if (irg->loopinfo_state == loopinfo_ip_consistent)
+ irg->loopinfo_state = loopinfo_ip_inconsistent;
+
+ else if (irg->loopinfo_state == loopinfo_consistent)
+ irg->loopinfo_state = loopinfo_inconsistent;
+
+ else if (irg->loopinfo_state == loopinfo_cf_ip_consistent)
+ irg->loopinfo_state = loopinfo_cf_ip_inconsistent;
+
+ else if (irg->loopinfo_state == loopinfo_cf_consistent)
+ irg->loopinfo_state = loopinfo_cf_inconsistent;
+}
+
+void
+(set_irg_pinned)(ir_graph *irg, op_pin_state p) {
+ __set_irg_pinned(irg, p);
+}
+
+irg_callee_info_state
+(get_irg_callee_info_state)(ir_graph *irg) {
+ return __get_irg_callee_info_state(irg);
+}
+
+void
+(set_irg_callee_info_state)(ir_graph *irg, irg_callee_info_state s) {
+ __set_irg_callee_info_state(irg, s);
+}
+
+irg_inline_property
+(get_irg_inline_property)(ir_graph *irg) {
+ return __get_irg_inline_property(irg);
+}
+
+void
+(set_irg_inline_property)(ir_graph *irg, irg_inline_property s) {
+ __set_irg_inline_property(irg, s);
+}
+
+void
+(set_irg_link)(ir_graph *irg, void *thing) {
+ __set_irg_link(irg, thing);
+}
+
+void *
+(get_irg_link)(ir_graph *irg) {
+ return __get_irg_link(irg);
+}
+
+/* maximum visited flag content of all ir_graph visited fields. */
+static int max_irg_visited = 0;
+
+unsigned long
+(get_irg_visited)(ir_graph *irg) {
+ return __get_irg_visited(irg);
}
void
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_irg_block_visited (ir_graph *irg)
+get_max_irg_visited(void)
{
- return irg->block_visited;
+ /*
+ 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_irg_block_visited (ir_graph *irg, unsigned long visited)
+void set_max_irg_visited(int val) {
+ max_irg_visited = val;
+}
+
+unsigned long
+inc_max_irg_visited(void)
{
- irg->block_visited = visited;
+ /*
+ 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
+(get_irg_block_visited)(ir_graph *irg) {
+ return __get_irg_block_visited(irg);
}
void
-inc_irg_block_visited (ir_graph *irg)
+(set_irg_block_visited)(ir_graph *irg, unsigned long visited) {
+ __set_irg_block_visited(irg, visited);
+}
+
+void
+(inc_irg_block_visited)(ir_graph *irg) {
+ __inc_irg_block_visited(irg);
+}
+
+/* is irg a pseudo graph for analysis? */
+int is_pseudo_ir_graph(ir_graph *irg)
{
- irg->block_visited = irg->block_visited++;
+ int res = false;
+ entity *ent;
+
+ assert(irg && "nothing here");
+ assert(is_ir_graph(irg) && "no ir_graph given");
+
+ ent = get_irg_entity(irg);
+ if(visibility_external_allocated == get_entity_visibility(ent)
+ && peculiarity_existent == get_entity_peculiarity(ent)) {
+ res = true;
+ }
+ return(res);
}