X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=testprograms%2Fif_else_example.c;h=f4f9246e4ca29ac578416a606bd21012506f1710;hb=8e8fbe5556cfeeb18427f44dda1a66fa98939e1c;hp=77a9bb56289f611d3dc19e07d7d089aa72944d62;hpb=a3a4f27fa76972a5aa4773b34ad83796eaf1fcfc;p=libfirm diff --git a/testprograms/if_else_example.c b/testprograms/if_else_example.c index 77a9bb562..f4f9246e4 100644 --- a/testprograms/if_else_example.c +++ b/testprograms/if_else_example.c @@ -1,13 +1,15 @@ /* Copyright (C) 1998 - 2000 by Universitaet Karlsruhe -** All rights reserved. -** -** Authors: Christian Schaefer, Goetz Lindenmaier -** -** testprogram. +* All rights reserved. +* +* Authors: Christian Schaefer, Goetz Lindenmaier +* +* testprogram. */ # include +# include +# include "irvrfy.h" # include "firm.h" # include "irdump.h" @@ -16,22 +18,23 @@ */ /** -*** This file constructs the ir for the following pseudo-program: -*** -*** main() { -*** int a = 0; -*** int b = 1; -*** -*** if (a > 2) -*** { a = b; } -*** else -*** { b = 2; } -*** -*** return a, b; +* This file constructs the ir for the following pseudo-program: +* +* main() { +* int a = 0; +* int b = 1; +* +* if (a > 2) +* { a = b; } +* else +* { b = 2; } +* +* return a, b; **/ int main(int argc, char **argv) { + 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 */ @@ -43,16 +46,22 @@ int main(int argc, char **argv) /* init library */ init_firm (); + /*** Make basic type information for primitive type int. ***/ + prim_t_int = new_type_primitive(id_from_str ("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 "IF_ELSE_EXAMPLE" with a method main as an * entity. */ -#define ENTITYNAME "main" +#define ENTITYNAME "IF_ELSE_EXAMPLE_main" owner = get_glob_type(); - method = new_type_method (id_from_str("main", 4), 0, 2); + method = new_type_method (id_from_str(ENTITYNAME, strlen(ENTITYNAME)), 0, 2); + set_method_res_type(method, 0, prim_t_int); + set_method_res_type(method, 1, prim_t_int); + ent = new_entity (owner, id_from_str (ENTITYNAME, strlen(ENTITYNAME)), method); @@ -65,16 +74,16 @@ int main(int argc, char **argv) irg = new_ir_graph (ent, NUM_OF_LOCAL_VARS); /* Generate two constants */ - c0 = new_Const (mode_i, tarval_from_long (mode_i, 0)); - c1 = new_Const (mode_i, tarval_from_long (mode_i, 1)); + c0 = new_Const (mode_Is, tarval_from_long (mode_Is, 0)); + c1 = new_Const (mode_Is, tarval_from_long (mode_Is, 1)); /* set a and b to constants */ set_value (0, c0); /* this (0) is variable a */ set_value (1, c1); /* this (1) is variable b */ /* the expression that evaluates the condition */ - 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); + c2 = new_Const (mode_Is, tarval_from_long (mode_Is, 2)); + cmpGt = new_Proj(new_Cmp(get_value(0, mode_Is), c2), mode_b, Gt); /* the conditional branch */ x = new_Cond (cmpGt); @@ -86,14 +95,14 @@ int main(int argc, char **argv) /* generate and fill the then block */ b = new_immBlock (); add_in_edge (b, t); - set_value (0, get_value(1, mode_i)); + set_value (0, get_value(1, mode_Is)); mature_block (b); x_then = new_Jmp (); /* generate and fill the else block */ b = new_immBlock (); add_in_edge (b, f); - set_value (1, new_Const (mode_i, tarval_from_long (mode_i, 2))); + set_value (1, new_Const (mode_Is, tarval_from_long (mode_Is, 2))); mature_block (b); x_else = new_Jmp (); @@ -105,8 +114,8 @@ int main(int argc, char **argv) /* Generate the return node into current region. */ { ir_node *in[2]; /* this is the array containing the return parameters */ - in[0] = get_value(0, mode_i); - in[1] = get_value(1, mode_i); + in[0] = get_value(0, mode_Is); + in[1] = get_value(1, mode_Is); x = new_Return (get_store(), 2, in); } /* Now generate all instructions for this block and all its predecessor @@ -120,15 +129,17 @@ int main(int argc, char **argv) /* Now we can mature the end block as all it's predecessors are known. */ mature_block (get_irg_end_block(irg)); + finalize_cons (irg); + printf("\nOptimizing ...\n"); local_optimize_graph(irg); dead_node_elimination(irg); /* verify the graph */ irg_vrfy(irg); + finalize_cons (irg); printf("Done building the graph. Dumping it.\n"); - //dump_ir_graph (irg); dump_ir_block_graph (irg); printf("use xvcg to view this graph:\n"); printf("/ben/goetz/bin/xvcg GRAPHNAME\n\n");