main.c

#include <stdio.h>

#include <item/ast.h>
#include <item/io.h>

int main(int argc, char **argv)
{
	item_mod *mod = item_create_mod();
	item_type *i32 = item_e2b(item_get_int(mod, 32));
	item_fun *fun = item_create_fun(mod, i32, "main", L_GLOBAL);

	item_block *cond = item_create_block(fun);
	item_block *inc = item_create_block(fun);
	item_block *ex = item_create_block(fun);
	item_block *entry = item_fun_get_entry(fun);

	item_lex_progress(entry, cond);
	item_lex_progress(cond, inc);
	item_lex_progress(inc, ex);

	item_node *jmp = item_create_node(entry, NK_JMP, item_e2b(cond));
	item_push_back_node(entry, jmp);

	item_node *phi = item_create_node(cond, NK_PHI, i32);
	item_push_back_node(cond, phi);

	item_lit *ten = item_create_lit(i32);
	item_lit_set_int(ten, 10);
	item_node *cmp = item_create_node(cond, NK_CMPL, item_e2b(phi), item_e2b(ten));
	item_push_back_node(cond, cmp);

	item_node *cjmp = item_create_node(cond, NK_CJMP, item_e2b(cmp), item_e2b(inc), item_e2b(ex));
	item_push_back_node(cond, cjmp);

	item_lit *one = item_create_lit(i32);
	item_lit_set_int(one, 1);
	item_node *add = item_create_node(inc, NK_ADD, item_e2b(phi), item_e2b(one));
	item_push_back_node(inc, add);
	item_push_back_node(inc, item_create_node(inc, NK_JMP, item_e2b(cond)));

	item_lit *zero = item_create_lit(i32);
	item_lit_set_int(zero, 0);
	item_phi_add(phi, entry, item_e2b(zero));
	item_phi_add(phi, inc, item_e2b(add));

	item_push_back_node(ex, item_create_node(ex, NK_RET, item_e2b(zero)));

	item_write_graph(fun, stdout);

	item_destroy_mod(mod);
	return 0;
}