-/* Copyright (C) 1998 - 2000 by Universitaet Karlsruhe
-** All rights reserved.
-**
-** Authors: Goetz Lindenmaier
-**
-** testprogram.
-**
-*/
-
-# include <stdio.h>
-# include <string.h>
-
-# include "irvrfy.h"
-# include "irdump.h"
-# include "firm.h"
+/*
+ * Project: libFIRM
+ * File name: testprograms/global_var_example.c
+ * Purpose: Illustrates representation of global variable.
+ * Author: Christian Schaefer, Goetz Lindenmaier
+ * Modified by:
+ * Created:
+ * CVS-ID: $Id$
+ * Copyright: (c) 1999-2003 Universität Karlsruhe
+ * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <libfirm/firm.h>
/*
* das leere FIRM Programm
*/
/**
-*** This program shows how to build ir for global variables.
-*** It constructs the ir for the following pseudo-program:
-***
-*** int i;
-***
-*** main() {
-*** i = 2;
-*** return;
-*** }
+* This program shows how to build ir for global variables.
+* It constructs the ir for the following pseudo-program:
+*
+* int i;
+*
+* main() {
+* i = 2;
+* return;
+* }
**/
-int main(int argc, char **argv)
+int main(void)
{
+ char *dump_file_suffix = "";
ir_graph *irg; /* this variable contains the irgraph */
- type *owner; /* the class in which this method is defined */
- type *proc_main; /* type information for the method main */
- type *prim_t_int; /* describes int type defined by the language */
- entity *main_ent; /* represents this method as entity of owner */
- entity *i_ent; /* the entity representing the global variable i */
+ ir_type *owner; /* the class in which this method is defined */
+ ir_type *proc_main; /* ir_type information for the method main */
+ ir_type *prim_t_int; /* describes int ir_type defined by the language */
+ ir_entity *main_ent; /* represents this method as ir_entity of owner */
+ ir_entity *i_ent; /* the ir_entity representing the global variable i */
+ union symconst_symbol symbol;
ir_node *x, *i_ptr, *store;
printf("\nCreating an IR graph: GLOBAL_VAR ...\n");
/* init library */
- init_firm ();
+ init_firm (NULL);
- /* make basic type information for primitive type int.
+ /* make basic ir_type information for primitive ir_type int.
In Sather primitive types are represented by a class.
This is the modeling appropriate for other languages.
Mode_i says that all integers shall be implemented as a
32 bit integer value. */
- prim_t_int = new_type_primitive(id_from_str ("int", 3), mode_Is);
+ prim_t_int = new_type_primitive(new_id_from_chars ("int", 3), mode_Is);
/* FIRM was designed for oo languages where all methods belong to a class.
* For imperative languages like C we view a file or compilation unit as
* a large class containing all functions as methods in this file.
* This class is automatically generated and can be obtained by get_glob_type().
*/
-#define METHODNAME "main"
+#define METHODNAME "GLOBAL_VAR_main"
#define NRARGS 0
#define NRES 0
- /* Main is an entity of this global class. */
+ /* Main is an ir_entity of this global class. */
owner = get_glob_type();
- proc_main = new_type_method(id_from_str(METHODNAME, strlen(METHODNAME)),
+ proc_main = new_type_method(new_id_from_chars(METHODNAME, strlen(METHODNAME)),
NRARGS, NRES);
main_ent = new_entity (owner,
- id_from_str (METHODNAME, strlen(METHODNAME)),
+ new_id_from_chars (METHODNAME, strlen(METHODNAME)),
proc_main);
- /* Generates the basic graph for the method represented by entity main_ent, that
+ /* Generates the basic graph for the method represented by ir_entity main_ent, that
* is, generates start and end blocks and nodes and a first, initial block.
* The constructor needs to know how many local variables the method has.
*/
/* Generate the entities for the global variables. */
i_ent = new_entity (get_glob_type(),
- id_from_str ("i", strlen("i")),
+ new_id_from_chars ("i", strlen("i")),
prim_t_int);
irg = new_ir_graph (main_ent, NUM_OF_LOCAL_VARS);
* it is not matured.
* Generate the assignment to i and the return node into this region.
* The Return node is needed to return at least the store. */
- i_ptr = new_simpleSel(get_store(), get_irg_globals(irg), i_ent);
+ symbol.entity_p = i_ent;
+ i_ptr = new_SymConst(mode_P, symbol, symconst_addr_ent);
store = new_Store (get_store(), i_ptr,
- new_Const(mode_Is, tarval_from_long (mode_Is, 2)));
- set_store(new_Proj(store, mode_M, 0));
+ new_Const(mode_Is, new_tarval_from_long (2, mode_Is)));
+ set_store(new_Proj(store, mode_M, pn_Store_M));
+
+ x = new_Return (get_store(), 0, NULL);
- {
- ir_node *in[0]; /* this is the array containing the return parameters */
- x = new_Return (get_store(), 0, in);
- }
/* Now generate all instructions for this block and all its predecessor blocks
* so we can mature it. */
- mature_block (get_irg_current_block(irg));
+ mature_immBlock (get_irg_current_block(irg));
/* This adds the in edge of the end block which originates at the return statement.
* The return node passes controlflow to the end block. */
- add_in_edge (get_irg_end_block(irg), x);
+ add_immBlock_pred (get_irg_end_block(irg), x);
/* Now we can mature the end block as all it's predecessors are known. */
- mature_block (get_irg_end_block(irg));
+ mature_immBlock (get_irg_end_block(irg));
- finalize_cons (irg);
+ irg_finalize_cons (irg);
printf("Optimizing ...\n");
dead_node_elimination(irg);
irg_vrfy(irg);
printf("Done building the graph. Dumping it.\n");
- dump_ir_block_graph (irg);
- dump_ir_graph_w_types (irg);
- printf("Use xvcg to view this graph:\n");
- printf("/ben/goetz/bin/xvcg GRAPHNAME\n\n");
+ dump_ir_block_graph (irg, dump_file_suffix);
+ dump_ir_graph_w_types (irg, dump_file_suffix);
+ printf("Use ycomp to view this graph:\n");
+ printf("ycomp GRAPHNAME\n\n");
return (0);
}
projects / libfirm / blobdiff