* Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
*/
-# include <stdio.h>
-# include <string.h>
+#include <stdio.h>
+#include <string.h>
-# include "irvrfy.h"
-# include "irdump.h"
-# include "firm.h"
+#include <libfirm/firm.h>
/**
* This file constructs a control flow with an unreachable
*
**/
-int main(int argc, char **argv)
+int main(void)
{
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_type *prim_t_int;
+ ir_type *owner; /* the class in which this method is defined */
+ ir_type *proc_main; /* typeinformation for the method main */
+ ir_entity *ent; /* represents this method as ir_entity of owner */
ir_node *returnBlock, *loopBlock1, *loopBlock2, *x, *c1, *c2, *t, *f;
/* init library */
- init_firm (NULL);
- set_opt_normalize(0);
- set_opt_constant_folding (0); /* so that the stupid tests are not optimized. */
+ init_firm(NULL);
+ /*set_opt_normalize(0); */
+ 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
* all functions as methods in this file.
* Therefore we define a class "empty" according to the file name
- * with a method main as an entity.
+ * with a method main as an ir_entity.
*/
#define CLASSNAME "DEAD_LOOP"
#define METHODNAME "main"
-#define NRARGS 0
+#define NRARGS 1
#define NRES 0
printf("\nCreating an IR graph: %s...\n", CLASSNAME);
- owner = new_type_class (new_id_from_str (CLASSNAME));
+ prim_t_int = new_type_primitive(new_id_from_str("int"), mode_Is);
+
+ owner = new_type_class(new_id_from_str(CLASSNAME));
proc_main = new_type_method(new_id_from_str(METHODNAME), NRARGS, NRES);
- ent = new_entity (owner, new_id_from_str (METHODNAME), proc_main);
+ set_method_param_type(proc_main, 0, prim_t_int);
+ ent = new_entity(owner, new_id_from_str(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);
+ irg = new_ir_graph(ent, NUM_OF_LOCAL_VARS);
returnBlock = get_irg_current_block(irg);
-#if 1
+ /* Make some real stupid stuff: a data loop (without Phi). */
+ {
+ ir_node *a, *b, *c, *in[2];
+ add_immBlock_pred(get_cur_block(), new_Bad());
+ a = new_Const(mode_Is, new_tarval_from_long(1, mode_Is));
+ b = new_Const(mode_Is, new_tarval_from_long(2, mode_Is));
+ c = new_Add(a, b, mode_Is);
+ b = new_Sub(c, b, mode_Is);
+ in[0] = b;
+ in[1] = new_Bad();
+ a = new_Phi(2, in, mode_Is);
+ set_Add_left(c, a);
+ /* add_End_keepalive(get_irg_end(irg), a); */
+ set_nodes_block(c, new_Bad());
+ set_nodes_block(a, new_Bad());
+ }
+
/* Make the unreachable loop */
loopBlock1 = new_immBlock();
loopBlock2 = new_immBlock();
x = new_Jmp();
- add_in_edge(loopBlock1, x);
- mature_block(loopBlock1);
-
- switch_block(loopBlock1);
- c1 = new_Const (mode_Is, new_tarval_from_long (1, mode_Is));
- c2 = new_Const (mode_Is, new_tarval_from_long (2, mode_Is));
- x = new_Cond(new_Proj(new_Cmp(c1, c2), mode_b, Eq));
- f = new_Proj(x, mode_X, 0);
- t = new_Proj(x, mode_X, 1);
- add_in_edge(loopBlock2, t);
- add_in_edge(returnBlock, f);
- mature_block(loopBlock2);
-#endif
+ add_immBlock_pred(loopBlock1, x);
+ mature_immBlock(loopBlock1);
+
+ set_cur_block(loopBlock1);
+ c1 = new_Const(mode_Is, new_tarval_from_long(1, mode_Is));
+ c2 = new_Proj(get_irg_args(irg), mode_Is, 0);
+ x = new_Cond(new_Proj(new_Cmp(c1, c2), mode_b, pn_Cmp_Eq));
+ f = new_Proj(x, mode_X, pn_Cond_false);
+ t = new_Proj(x, mode_X, pn_Cond_true);
+ add_immBlock_pred(loopBlock2, t);
+ add_immBlock_pred(returnBlock, f);
+ mature_immBlock(loopBlock2);
/* Make the unreachable, endless loop */
loopBlock1 = new_immBlock();
loopBlock2 = new_immBlock();
x = new_Jmp();
- add_in_edge(loopBlock1, x);
- mature_block(loopBlock1);
+ add_immBlock_pred(loopBlock1, x);
+ mature_immBlock(loopBlock1);
- switch_block(loopBlock1);
+ set_cur_block(loopBlock1);
x = new_Jmp();
- add_in_edge(loopBlock2, x);
- add_End_keepalive(get_irg_end(irg), x);
- mature_block(loopBlock2);
+ add_immBlock_pred(loopBlock2, x);
+ add_End_keepalive(get_irg_end(irg), loopBlock1);
+ mature_immBlock(loopBlock2);
/* Make the return block */
- switch_block(returnBlock);
- x = new_Return (get_store(), 0, NULL);
- mature_block (get_irg_current_block(irg));
+ set_cur_block(returnBlock);
+ x = new_Return(get_store(), 0, NULL);
+ mature_immBlock(get_irg_current_block(irg));
- add_in_edge (get_irg_end_block(irg), x);
- mature_block (get_irg_end_block(irg));
+ add_immBlock_pred(get_irg_end_block(irg), x);
+ mature_immBlock(get_irg_end_block(irg));
- finalize_cons (irg);
+ irg_finalize_cons(irg);
+#if 0
printf("Optimizing ...\n");
dead_node_elimination(irg);
+#endif
/* verify the graph */
irg_vrfy(irg);
printf("Dumping the graph and a control flow graph.\n");
turn_off_edge_labels();
dump_keepalive_edges(1);
- dump_consts_local(1);
- dump_ir_block_graph (irg);
- dump_cfg (irg);
+ dump_consts_local(0);
+ dump_ir_graph(irg, "-cfg");
+ dump_ir_block_graph(irg, "-cfg");
+ dump_cfg(irg, "-cfg");
printf("Running analyses.\n");
- compute_outs(irg);
+ compute_irg_outs(irg);
compute_doms(irg);
construct_backedges(irg);
printf("Dumping the graph with analyses information.\n");
- dump_out_edges();
- dump_dominator_information();
- dump_loop_information();
+ dump_out_edges(0);
+ dump_dominator_information(0);
+ dump_loop_information(0);
dump_backedge_information(1);
- dump_ir_block_graph (irg);
+ dump_ir_graph(irg, "-ana");
+ dump_ir_block_graph(irg, "-anablocks");
+ dump_cfg(irg, "-ana");
+ dump_loop_tree(irg, "-ana");
+
+ printf("Optimizing.\n");
+ optimize_cf(current_ir_graph);
+ local_optimize_graph(current_ir_graph);
+
+ printf("Dumping the optimized graph.\n");
+ dump_ir_graph(irg, "-opt");
+ dump_ir_block_graph(irg, "-opt");
+ dump_cfg(irg, "-opt");
+ dump_loop_tree(irg, "-opt");
- printf("Use xvcg to view these graphs:\n");
- printf("/ben/goetz/bin/xvcg GRAPHNAME\n\n");
+ printf("Use ycomp to view these graphs:\n");
+ printf("ycomp GRAPHNAME\n\n");
- return (0);
+ return 0;
}
projects / libfirm / blobdiff