-/* Copyright (C) 1998 - 2000 by Universitaet Karlsruhe
-** All rights reserved.
-**
-** Authors: Christian Schaefer, Goetz Lindenmaier
-**
-** testprogram.
-*/
+/*
+ * Project: libFIRM
+ * File name: testprograms/irr_loop_example.c
+ * Purpose: Test Phi construction with irregular control flow.
+ * 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 "irvrfy.h"
# include "irdump.h"
# include "firm.h"
-/*
- * an irreducible loop.
- */
-
/**
-*** This file constructs a control flow of following shape:
-***
-***
-*** firstBlock
-*** / \
-*** / \
-*** |/_ _\|
-*** ---->
-*** LoopBlock1 LoopBlock2
-*** <----
-*** \ /
-*** \ /
-*** _\| |/_
-*** nextBlock
-***
-***
-**/
+ * This file constructs a control flow of following shape:
+ *
+ *
+ * firstBlock
+ * / \
+ * / \
+ * |/_ _\|
+ * ---->
+ * LoopBlock1 LoopBlock2
+ * <----
+ * \ /
+ * \ /
+ * _\| |/_
+ * nextBlock
+ *
+ *
+ **/
int main(int argc, char **argv)
{
- ir_graph *irg; /* this variable contains the irgraph */
- type_class *owner; /* the class in which this method is defined */
- type_method *proc_main; /* typeinformation for the method main */
- entity *ent; /* represents this method as entity of owner */
- ir_node *expr, *c1, *c2, *c3, *cond, *f, *t, *loopBlock1, *f_l1, *t_l1,
- *loopBlock2, *f_l2, *t_l2, *x;
+ ir_graph *irg; /* this variable contains the irgraph */
+ type *owner; /* the class in which this method is defined */
+ type *proc_main; /* typeinformation for the method main */
+ entity *ent; /* represents this method as entity of owner */
+ ir_node *expr, *c1, *c2, *c3, *cond, *f, *t, *loopBlock1, *f_l1, *t_l1,
+ *loopBlock2, *f_l2, *t_l2, *x;
/* init library */
- init_firm ();
- set_opt_constant_folding (1);
+ init_firm (NULL);
+ set_opt_constant_folding (0); /* so that the stupid tests are not optimized. */
+ set_opt_cse(1);
+ set_opt_dead_node_elimination(1);
/* 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 METHODNAME "main"
#define NRARGS 0
#define NRES 0
- printf("creating an IR graph: %s...\n", CLASSNAME);
+ printf("\nCreating an IR graph: %s...\n", CLASSNAME);
- owner = new_type_class (id_from_str (CLASSNAME, strlen(CLASSNAME)));
- proc_main = new_type_method(id_from_str(METHODNAME, strlen(METHODNAME)),
+ owner = new_type_class (new_id_from_chars (CLASSNAME, strlen(CLASSNAME)));
+ proc_main = new_type_method(new_id_from_chars(METHODNAME, strlen(METHODNAME)),
NRARGS, NRES);
- ent = new_entity ((type *)owner,
- id_from_str (METHODNAME, strlen(METHODNAME)),
- (type *)proc_main);
+ ent = new_entity (owner,
+ new_id_from_chars (METHODNAME, strlen(METHODNAME)),
+ proc_main);
+ get_entity_ld_name(ent); /* To enforce name mangling for vcg graph name */
#define NUM_OF_LOCAL_VARS 0
irg = new_ir_graph (ent, NUM_OF_LOCAL_VARS);
- /* two make three conditionals */
- expr = new_Const (mode_i, tarval_from_long (mode_i, 0));
- c1 = new_Const (mode_i, tarval_from_long (mode_i, 1));
- c2 = new_Const (mode_i, tarval_from_long (mode_i, 2));
- c3 = new_Const (mode_i, tarval_from_long (mode_i, 2));
+ /* to make three conditionals */
+ expr = new_Const (mode_Is, new_tarval_from_long (0, mode_Is));
+ c1 = new_Const (mode_Is, new_tarval_from_long (1, mode_Is));
+ c2 = new_Const (mode_Is, new_tarval_from_long (2, mode_Is));
+ c3 = new_Const (mode_Is, new_tarval_from_long (2, mode_Is));
cond = new_Cond(new_Proj(new_Cmp(expr, c1), mode_b, Eq));
f = new_Proj(cond, mode_X, 0);
t = new_Proj(cond, mode_X, 1);
- mature_block(irg->current_block);
+ mature_immBlock(get_irg_current_block(irg));
- loopBlock1 = new_Block();
- add_in_edge(loopBlock1, t);
+ loopBlock1 = new_immBlock();
+ add_immBlock_pred(loopBlock1, t);
cond = new_Cond(new_Proj(new_Cmp(expr, c2), mode_b, Eq));
f_l1 = new_Proj(cond, mode_X, 0);
t_l1 = new_Proj(cond, mode_X, 1);
- loopBlock2 = new_Block();
- add_in_edge(loopBlock2, f);
+ loopBlock2 = new_immBlock();
+ add_immBlock_pred(loopBlock2, f);
cond = new_Cond(new_Proj(new_Cmp(expr, c3), mode_b, Eq));
f_l2 = new_Proj(cond, mode_X, 0);
t_l2 = new_Proj(cond, mode_X, 1);
- add_in_edge(loopBlock1, t_l2);
- add_in_edge(loopBlock2, t_l1);
- mature_block(loopBlock1);
- mature_block(loopBlock2);
+ add_immBlock_pred(loopBlock1, t_l2);
+ add_immBlock_pred(loopBlock2, t_l1);
+ mature_immBlock(loopBlock1);
+ mature_immBlock(loopBlock2);
- new_Block();
- add_in_edge(irg->current_block, f_l2);
- add_in_edge(irg->current_block, f_l1);
- {
- ir_node *in[0];
- x = new_Return (get_store(), 1, in);
- }
- mature_block (irg->current_block);
+ new_immBlock();
+ add_immBlock_pred(get_irg_current_block(irg), f_l2);
+ add_immBlock_pred(get_irg_current_block(irg), f_l1);
+ x = new_Return (get_store(), 0, NULL);
+ mature_immBlock (get_irg_current_block(irg));
- add_in_edge (irg->end_block, x);
- mature_block (irg->end_block);
+ add_immBlock_pred (get_irg_end_block(irg), x);
+ mature_immBlock (get_irg_end_block(irg));
- printf("\nDone building the graph..\n");
- printf("Dumping the graph and a control flow graph.\n");
- dump_ir_block_graph (irg);
- dump_cfg (irg);
+ finalize_cons (irg);
+
+ printf("Optimizing ...\n");
+ dead_node_elimination(irg);
- printf("use xvcg to view these graphs:\n");
- printf("/ben/trapp/bin/i486/xvcg GRAPHNAME\n");
+ /* verify the graph */
+ irg_vrfy(irg);
+
+ printf("Dumping the graph and a control flow graph.\n");
+ char *dump_file_suffix = "";
+ dump_ir_block_graph (irg, dump_file_suffix);
+ dump_cfg (irg, dump_file_suffix);
+ printf("Use xvcg to view these graphs:\n");
+ printf("/ben/goetz/bin/xvcg GRAPHNAME\n\n");
return (0);
}