-/* Copyright (C) 1998 - 2000 by Universitaet Karlsruhe
-* All rights reserved.
-*
-* Authors: Christian Schaefer, Goetz Lindenmaier
-*
-* testprogram.
-*/
+ /*
+ * Project: libFIRM
+ * File name: testprograms/if_else_example.c
+ * Purpose: Shows construction of if ... else control flow.
+ * Tests Phi construction.
+ * 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 "firm.h"
# include "irdump.h"
-/*
- * das leere FIRM Programm
- */
-
/**
-* This file constructs the ir for the following pseudo-program:
-*
-* main() {
-* int a = 0;
-* int b = 1;
-*
-* if (a > 2)
-* { a = b; }
-* else
-* { b = 2; }
-*
-* return a, b;
-**/
+ * This file constructs the ir for the following pseudo-program:
+ *
+ * main() {
+ * int a = 0;
+ * int b = 1;
+ *
+ * if (a > 2)
+ * { a = b; }
+ * else
+ * { b = 2; }
+ *
+ * return a, b;
+ */
int main(int argc, char **argv)
{
entity *ent; /* represents this method as entity of owner */
ir_node *x, *x_then, *x_else, *c0, *c1, *c2, *cmpGt, *f, *t, *b;
- printf("\ncreating an IR graph: IF_ELSE_EXAMPLE...\n");
+ printf("\nCreating an IR graph: IF_ELSE_EXAMPLE...\n");
/* init library */
init_firm (NULL);
/*** Make basic type information for primitive type int. ***/
- 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 as a large class containing
#define ENTITYNAME "IF_ELSE_EXAMPLE_main"
owner = get_glob_type();
- method = new_type_method (id_from_str(ENTITYNAME, strlen(ENTITYNAME)), 0, 2);
+ method = new_type_method (new_id_from_chars(ENTITYNAME, strlen(ENTITYNAME)), 0, 2);
set_method_res_type(method, 0, prim_t_int);
set_method_res_type(method, 1, prim_t_int);
- ent = new_entity (owner, id_from_str (ENTITYNAME,
+ ent = new_entity (owner, new_id_from_chars (ENTITYNAME,
strlen(ENTITYNAME)), method);
/* Generates the basic graph for the method represented by entity ent, that
/* the expression that evaluates the condition */
c2 = new_Const (mode_Is, new_tarval_from_long (2, mode_Is));
- cmpGt = new_Proj(new_Cmp(get_value(0, mode_Is), c2), mode_b, Gt);
+ cmpGt = new_Proj(new_Cmp(get_value(0, mode_Is), c2), mode_b, pn_Cmp_Gt);
/* the conditional branch */
x = new_Cond (cmpGt);
f = new_Proj (x, mode_X, 0); /* if condition is false */
t = new_Proj (x, mode_X, 1); /* if condition is true */
- mature_block (get_irg_current_block(irg));
+ mature_immBlock (get_irg_current_block(irg));
/* generate and fill the then block */
b = new_immBlock ();
- add_in_edge (b, t);
+ add_immBlock_pred (b, t);
set_value (0, get_value(1, mode_Is));
- mature_block (b);
+ mature_immBlock (b);
x_then = new_Jmp ();
/* generate and fill the else block */
b = new_immBlock ();
- add_in_edge (b, f);
+ add_immBlock_pred (b, f);
set_value (1, new_Const (mode_Is, new_tarval_from_long (2, mode_Is)));
- mature_block (b);
+ mature_immBlock (b);
x_else = new_Jmp ();
/* generate the join block and add all cfg edges */
b = new_immBlock ();
- add_in_edge (b, x_then);
- add_in_edge (b, x_else);
+ add_immBlock_pred (b, x_then);
+ add_immBlock_pred (b, x_else);
/* Generate the return node into current region. */
{
}
/* 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 control flow 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("\nOptimizing ...\n");
+ printf("Optimizing ...\n");
local_optimize_graph(irg);
dead_node_elimination(irg);
/* verify the graph */
irg_vrfy(irg);
- finalize_cons (irg);
+ irg_finalize_cons (irg);
printf("Done building the graph. Dumping it.\n");
- dump_ir_block_graph (irg);
+ dump_ir_block_graph (irg, 0);
printf("use xvcg to view this graph:\n");
printf("/ben/goetz/bin/xvcg GRAPHNAME\n\n");
projects / libfirm / blobdiff