*/
#include <stdio.h>
+# include <string.h>
+# include "irvrfy.h"
# include "irdump.h"
# include "firm.h"
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 *method; /* the type of this method */
- entity *ent; /* represents this method as entity of owner */
- ir_node *x, *x_then, *arg1, *c2, *c10, *cmpGt, *cmpLt, *and, *f, *t, *b;
+ type *prim_t_int;
+ ir_graph *irg; /* this variable contains the irgraph */
+ type *owner; /* the class in which this method is defined */
+ type *method; /* the type of this method */
+ entity *ent; /* represents this method as entity of owner */
+ ir_node *x, *x_then, *arg1, *c2, *c10, *cmpGt, *cmpLt, *and, *f, *t, *b;
- printf("creating an IR graph: COND_EXAMPLE...\n");
+ printf("\nCreating an IR graph: COND_EXAMPLE...\n");
/* init library */
init_firm ();
+ /*** Make basic type information for primitive type int. ***/
+ prim_t_int = new_type_primitive(id_from_str ("int", 3), mode_i);
+
/* 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
* all functions as methods in this file.
#define ENTITYNAME "main"
owner = new_type_class (id_from_str (CLASSNAME, strlen(CLASSNAME)));
- method = new_type_method (id_from_str("main", 4), 0, 2);
- ent = new_entity ((type *)owner, id_from_str (ENTITYNAME, strlen(ENTITYNAME)), (type *)method);
+ method = new_type_method (id_from_str("main", 4), 1, 1);
+ set_method_param_type(method, 0, prim_t_int);
+ set_method_res_type(method, 0, prim_t_int);
+ ent = new_entity (owner, id_from_str (ENTITYNAME, strlen(ENTITYNAME)), method);
/* Generates the basic graph for the method represented by entity ent, that
irg = new_ir_graph (ent, NUM_OF_LOCAL_VARS);
/* get the first argument a of method main - see irgraph.h */
- arg1 = new_Proj(irg->args, mode_i, 0);
+ arg1 = new_Proj(get_irg_args(irg), mode_i, 0);
/* arg1 as first first local variable - makes things simple */
set_value(0, arg1);
f = new_Proj (x, mode_X, 0); /* if condition is false */
t = new_Proj (x, mode_X, 1); /* if condition is true */
- mature_block (irg->current_block);
+ mature_block (get_irg_current_block(irg));
/* generate and fill the then block */
- b = new_Block ();
+ b = new_immBlock ();
add_in_edge (b, t);
set_value (0, new_Const (mode_i, tarval_from_long (mode_i, 1)));
mature_block (b);
x_then = new_Jmp ();
/* generate the fall through block and add all cfg edges */
- b = new_Block ();
+ b = new_immBlock ();
add_in_edge (b, x_then);
add_in_edge (b, f);
}
/* Now generate all instructions for this block and all its predecessor blocks
* so we can mature it. */
- mature_block (irg->current_block);
+ mature_block (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 (irg->end_block, x);
+ add_in_edge (get_irg_end_block(irg), x);
/* Now we can mature the end block as all it's predecessors are known. */
- mature_block (irg->end_block);
+ mature_block (get_irg_end_block(irg));
+ finalize_cons (irg);
- printf("\nDone building the graph. Dumping it.\n");
+ printf("Optimizing ...\n");
+ dead_node_elimination(irg);
/* verify the graph */
irg_vrfy(irg);
+ printf("Done building the graph. Dumping it.\n");
dump_ir_block_graph (irg);
-
- printf("use xvcg to view this graph:\n");
- printf("/ben/goetz/bin/xvcg GRAPHNAME\n");
+ printf("Use xvcg to view this graph:\n");
+ printf("/ben/goetz/bin/xvcg GRAPHNAME\n\n");
return (0);
}