** testprogram.
*/
+# include <stdio.h>
+# include <string.h>
+
+# include "irvrfy.h"
# include "irdump.h"
# include "firm.h"
/**
*** This file constructs the ir for the following pseudo-program:
***
-*** Doesn't work for some reason!!!!
-***
-*** main() {
-*** int a = 0;
+*** int main(int a) {
*** int b = 2;
-*** if ( a == a ) // a constant condition would be eliminated,
-*** // a realistic condition would no more be a small example
-*** { a := a - 2; }
+*** if ( a == b )
+*** { a := a - 3; }
***
-*** // return a, bla; // das ist hier kein korrekter graph
+*** return a;
*** }
**/
main(void)
{
ir_graph *irg;
- type_class *owner;
+ type *owner;
entity *ent;
- type_method *proc_main; /* typeinformation for the method main */
- type_primitive *typ;
- ir_node *x, *r, *t, *f, *a;
+ type *proc_main; /* type information for the method main */
+ type *typ;
+ ir_node *x, *r, *t, *f, *a, *cmp;
int a_pos, b_pos;
- FILE *outfile;
- printf("creating an IR graph: IF_EXAMPLE...\n");
+ printf("\nCreating an IR graph: IF_EXAMPLE...\n");
init_firm ();
#define CLASSNAME "IF_EXAMPLE"
#define METHODNAME "main"
-#define NRARGS 0
-#define NRES 2
-
- owner = new_type_class (id_from_str (CLASSNAME, strlen(CLASSNAME)));
- proc_main = new_type_method(id_from_str(METHODNAME, strlen(METHODNAME)), NRARGS, NRES);
- ent = new_entity ((type *)owner,
- id_from_str (METHODNAME, strlen(METHODNAME)),
- (type *)proc_main);
-
-#define RES_NAME "res1"
- typ = new_type_primitive(ID_FROM_STR(RES_NAME, strlen(RES_NAME)), mode_i);
- set_method_res_type(proc_main, 0, (type*)typ);
-#undef RES_NAME
-
-#define RES_NAME "res2"
- typ = new_type_primitive(ID_FROM_STR(RES_NAME, strlen(RES_NAME)), mode_i);
- set_method_res_type(proc_main, 1, (type*)typ);
-#undef RES_NAME
+#define NRARGS 1
+#define NRES 1
+ /** Type information for the procedure **/
- /* Generates start and end blocks and nodes and a first, initial block */
- irg = new_ir_graph (ent, 1);
-
- /* The value position used for a: */
+ owner = get_glob_type();
+ /* Type information for the procedure */
+ proc_main = new_type_method(id_from_str(METHODNAME, strlen(METHODNAME)),
+ NRARGS, NRES);
+ /* The entity for the procedure */
+ ent = new_entity (owner,
+ id_from_str (METHODNAME, strlen(METHODNAME)),
+ proc_main);
+ /* The type int. This type is necessary to model the result and parameters
+ the procedure. */
+#define PRIM_NAME "int"
+ typ = new_type_primitive(id_from_str(PRIM_NAME, strlen(PRIM_NAME)), mode_i);
+ /* The parameter and result types of the procedure. */
+ set_method_param_type(proc_main, 0, typ);
+ set_method_res_type(proc_main, 0, typ);
+
+ /** The code of the procedure **/
+
+ /* Generates start and end blocks and nodes, and a first, initial block */
+#define NRLOCS 2
+ irg = new_ir_graph (ent, NRLOCS);
+
+ /* The value position used for: */
a_pos = 0;
b_pos = 1;
- /* Generate the constant */
- set_value (a_pos, new_Const (mode_i, tarval_from_long (mode_i, 0)));
+ /* Get the procedure parameter and assign it to the parameter variable
+ a. */
+ set_value (a_pos, new_Proj (get_irg_args(irg), mode_i, 0));
+ /* Generate the constant and assign it to b. The assignment is resovled to a
+ dataflow edge. */
set_value (b_pos, new_Const (mode_i, tarval_from_long (mode_i, 2)));
- mature_block (irg->current_block);
+ /* We know all predecessors of the block and all set_values and set_stores are
+ preformed. We can mature the block. */
+ mature_block (get_irg_current_block(irg));
/* Generate a conditional branch */
- x = new_Cond (new_Proj(new_Cmp(get_value(a_pos, mode_i),
- get_value(a_pos, mode_i)),
- mode_b, Eq));
+ cmp = new_Cmp(get_value(a_pos, mode_i), get_value(b_pos, mode_i));
+ x = new_Cond (new_Proj(cmp, mode_b, Eq));
f = new_Proj (x, mode_X, 0);
t = new_Proj (x, mode_X, 1);
/* generate and fill the then block */
- r = new_Block ();
+ r = new_immBlock ();
add_in_edge (r, t);
- // mature_block (r);
a = new_Sub(get_value(a_pos, mode_i),
- new_Const (mode_i, tarval_from_long (mode_i, 2)),
+ new_Const (mode_i, tarval_from_long (mode_i, 3)),
mode_i);
set_value (a_pos, a);
x = new_Jmp ();
/* generate the fall through block and add all cfg edges */
- r = new_Block ();
+ r = new_immBlock ();
add_in_edge (r, f);
add_in_edge (r, x);
mature_block (r);
+ /* The Return statement */
{
- ir_node *in[3], *store ;
+ ir_node *in[1], *store ;
in[0] = get_value (a_pos, mode_i);
- in[1] = a;
- in[2] = get_value (b_pos, mode_i);
store = get_store();
- x = new_Return (store, 2, in);
+ x = new_Return (store, 1, in);
}
/* finalize the end block generated in new_ir_graph() */
- add_in_edge (irg->end_block, x);
- mature_block (irg->end_block);
+ add_in_edge (get_irg_end_block(irg), x);
+ mature_block (get_irg_end_block(irg));
- /* output the vcg file */
- printf("\nDone building the graph. Dumping it.\n");
+ /* verify the graph */
+ irg_vrfy(irg);
+ finalize_cons (irg);
+ /* output the vcg file */
+ printf("Done building the graph. Dumping it.\n");
dump_ir_block_graph (irg);
-
printf("use xvcg to view this graph:\n");
- printf("/ben/trapp/bin/i486/xvcg GRAPHNAME\n");
+ printf("/ben/goetz/bin/xvcg GRAPHNAME\n\n");
return (0);
}
projects / libfirm / blobdiff