X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=testprograms%2Fcond_example.c;h=5599794c08c1f5a600403cc1a7131393aae9a838;hb=1f231ec18477e4384a4b3e105270262ae19566de;hp=69f82c7e3073233da8020de4b49c51ca093e7a2d;hpb=4433514e4b01cb3c566d24d671e689f02682f59f;p=libfirm diff --git a/testprograms/cond_example.c b/testprograms/cond_example.c index 69f82c7e3..5599794c0 100644 --- a/testprograms/cond_example.c +++ b/testprograms/cond_example.c @@ -1,119 +1,132 @@ -/* Copyright (C) 1998 - 2000 by Universitaet Karlsruhe -** All rights reserved. -** -** Authors: Christian Schaefer, Goetz Lindenmaier -** -** testprogram. -*/ +/* + * Project: libFIRM + * File name: testprograms/cond_example.c + * Purpose: Shows how to represent boolean expressions. + * 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 +#include -# include "irdump.h" -# include "firm.h" +#include /** -*** This file constructs the ir for the following pseudo-program: -*** -*** main(int a) { -*** if ((a > 2) && (a < 10)) -*** { a = 1; } -*** -*** return a; +* This file constructs the ir for the following pseudo-program: +* +* main(int a) { +* if ((a > 2) && (a < 10)) +* { a = 1; } +* +* return a; **/ -int main(int argc, char **argv) +int main(void) { - 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; + ir_type *prim_t_int; + ir_graph *irg; /* this variable contains the irgraph */ + ir_type *owner; /* the class in which this method is defined */ + ir_type *method; /* the ir_type of this method */ + ir_entity *ent; /* represents this method as ir_entity of owner */ + ir_node *x, *x_then, *arg1, *c2, *c10, *cmpGt, *cmpLt, *and, *f, *t, *b; printf("\nCreating an IR graph: COND_EXAMPLE...\n"); /* init library */ - init_firm (); + init_firm(NULL); + + /*** Make basic ir_type information for primitive ir_type int. ***/ + prim_t_int = new_type_primitive(new_id_from_chars("int", 3), mode_Is); /* 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 "COND_EXAMPLE" with a method main as an - * entity. + * ir_entity. */ #define CLASSNAME "COND_EXAMPLE" #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); + owner = new_type_class(new_id_from_chars(CLASSNAME, strlen(CLASSNAME))); + method = new_type_method(new_id_from_chars("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, new_id_from_chars(ENTITYNAME, strlen(ENTITYNAME)), method); + get_entity_ld_name(ent); - /* Generates the basic graph for the method represented by entity ent, that + /* Generates the basic graph for the method represented by ir_entity ent, that * is, generates start and end blocks and nodes and a first, initial block. * The constructor needs to know how many local variables the method has. */ #define NUM_OF_LOCAL_VARS 1 - irg = new_ir_graph (ent, NUM_OF_LOCAL_VARS); + 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_Is, 0); /* arg1 as first first local variable - makes things simple */ set_value(0, arg1); /* the expression that evaluates the condition */ /* cmpGt = a > 2 */ - c2 = new_Const (mode_i, tarval_from_long (mode_i, 2)); - cmpGt = new_Proj(new_Cmp(get_value(0, mode_i), c2), mode_b, Gt); - cmpGt = new_Conv(cmpGt, mode_i); + c2 = new_Const(mode_Is, new_tarval_from_long(2, mode_Is)); + cmpGt = new_Proj(new_Cmp(get_value(0, mode_Is), c2), mode_b, pn_Cmp_Gt); + cmpGt = new_Conv(cmpGt, mode_Is); /* cmpLt = a < 10 */ - c10 = new_Const (mode_i, tarval_from_long (mode_i, 10)); - cmpLt = new_Proj(new_Cmp(get_value(0, mode_i), c10), mode_b, Lt); - cmpLt = new_Conv(cmpLt, mode_i); + c10 = new_Const(mode_Is, new_tarval_from_long(10, mode_Is)); + cmpLt = new_Proj(new_Cmp(get_value(0, mode_Is), c10), mode_b, pn_Cmp_Lt); + cmpLt = new_Conv(cmpLt, mode_Is); /* cmpGt && cmpLt */ - and = new_And(cmpGt, cmpLt, mode_i); + and = new_And(cmpGt, cmpLt, mode_Is); /* compare result and 0 because we have no cast from integer to bool */ - and = new_Cmp(and, new_Const (mode_i, tarval_from_long (mode_i, 0))); - and = new_Proj(and, mode_b, Ne); + and = new_Cmp(and, new_Const(mode_Is, new_tarval_from_long(0, mode_Is))); + and = new_Proj(and, mode_b, pn_Cmp_Lg); /* the conditional branch */ - x = new_Cond (and); - f = new_Proj (x, mode_X, 0); /* if condition is false */ - t = new_Proj (x, mode_X, 1); /* if condition is true */ + x = new_Cond(and); + f = new_Proj(x, mode_X, pn_Cond_false); /* if condition is false */ + t = new_Proj(x, mode_X, pn_Cond_true); /* if condition is true */ - mature_block (irg->current_block); + mature_immBlock(get_irg_current_block(irg)); /* generate and fill the then block */ - b = new_Block (); - 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 (); + b = new_immBlock(); + add_immBlock_pred(b, t); + set_value(0, new_Const(mode_Is, new_tarval_from_long(1, mode_Is))); + mature_immBlock(b); + x_then = new_Jmp(); /* generate the fall through block and add all cfg edges */ - b = new_Block (); - add_in_edge (b, x_then); - add_in_edge (b, f); + b = new_immBlock(); + add_immBlock_pred(b, x_then); + add_immBlock_pred(b, f); /* Generate the return node into current region. */ { ir_node *in[1]; /* this is the array containing the return parameters */ - in[0] = get_value(0, mode_i); - x = new_Return (get_store(), 1, in); + in[0] = get_value(0, mode_Is); + x = new_Return(get_store(), 1, in); } /* Now generate all instructions for this block and all its predecessor blocks * so we can mature it. */ - mature_block (irg->current_block); + mature_immBlock(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_immBlock_pred(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_immBlock(get_irg_end_block(irg)); + + irg_finalize_cons(irg); printf("Optimizing ...\n"); dead_node_elimination(irg); @@ -122,9 +135,9 @@ int main(int argc, char **argv) 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"); + dump_ir_block_graph(irg, 0); + printf("Use ycomp to view this graph:\n"); + printf("ycomp GRAPHNAME\n\n"); - return (0); + return 0; }