nsz Git - libfirm/blob - ir/be/beprofile.c

   1 /** vim: set sw=4 ts=4:
   2  * @file   beprofile.c
   3  * @date   2006-04-06
   4  * @author Adam M. Szalkowski
   5  *
   6  * Code instrumentation and execution count profiling
   7  *
   8  * Copyright (C) 2006 Universitaet Karlsruhe
   9  * Released under the GPL
  10  */
  11 #ifdef HAVE_CONFIG_H
  12 #include "config.h"
  13 #endif
  14
  15 #include <math.h>
  16
  17 #include "hashptr.h"
  18 #include "debug.h"
  19 #include "obst.h"
  20 #include "set.h"
  21 #include "list.h"
  22 #include "pmap.h"
  23
  24 #include "irprintf.h"
  25 #include "irgwalk.h"
  26 #include "irdump_t.h"
  27 #include "irnode_t.h"
  28 #include "ircons_t.h"
  29 #include "irloop_t.h"
  30 #include "phiclass_t.h"
  31 #include "iredges.h"
  32 #include "execfreq.h"
  33 #include "irvrfy.h"
  34
  35 #include <lpp/lpp.h>
  36 #include <lpp/mps.h>
  37 #include <lpp/lpp_net.h>
  38 #include <lpp/lpp_cplex.h>
  39 //#include <lc_pset.h>
  40 //#include <libcore/lc_bitset.h>
  41
  42 #include "be_t.h"
  43 #include "belive_t.h"
  44 #include "besched_t.h"
  45 #include "beirgmod.h"
  46 #include "bearch.h"
  47 #include "beabi.h"
  48 #include "benode_t.h"
  49 #include "beutil.h"
  50 #include "bespillremat.h"
  51 #include "bespill.h"
  52 #include "bepressurestat.h"
  53
  54 #include "bechordal_t.h"
  55
  56 #ifdef WITH_LIBCORE
  57 #include <libcore/lc_opts.h>
  58 #include <libcore/lc_opts_enum.h>
  59 #endif /* WITH_LIBCORE */
  60
  61 typedef struct _block_id_walker_data {
  62         tarval        **array;
  63         unsigned int    id;
  64         const ir_node  *symconst;
  65 } block_id_walker_data;
  66
  67 static void
  68 block_counter(ir_node * bb, void * data)
  69 {
  70         unsigned int  *count = data;
  71         *count = *count + 1;
  72 }
  73
  74 static unsigned int
  75 count_blocks(const ir_graph * irg)
  76 {
  77         unsigned int count = 0;
  78
  79         irg_block_walk_graph(irg, block_counter, NULL, &count);
  80         return count;
  81 }
  82
  83 /**
  84  * Instrument a block with code needed for profiling
  85  */
  86 static void
  87 instrument_block(const ir_node * bb, const ir_node * address, unsigned int id)
  88 {
  89         ir_node  *load, *store, *offset, *add, *projm, *proji;
  90
  91         offset = new_r_Add(get_irn_irg(bb), bb, address, new_Const_long(mode_Is, get_mode_size_bytes(mode_Iu)*id), mode_P);
  92         load = new_r_Load(get_irn_irg(bb), bb, new_NoMem(), offset, mode_Iu);
  93         projm = new_r_Proj(get_irn_irg(bb), bb, load, mode_M, 0);
  94         proji = new_r_Proj(get_irn_irg(bb), bb, load, mode_Iu, 2);
  95         add = new_r_Add(get_irn_irg(bb), bb, proji, new_Const_long(mode_Iu, 1), mode_Iu);
  96         store = new_r_Store(get_irn_irg(bb), bb, projm, offset, add);
  97         keep_alive(new_r_Proj(get_irn_irg(bb), bb, load, mode_M, 0));
  98 }
  99
 100 /**
 101  * Generates a new irg which calls the initializer
 102  */
 103 static ir_graph *
 104 gen_initializer_irg(entity * bblock_id, entitiy * bblock_counts, entity * bblock_count)
 105 {
 106         ir_graph  *irg;
 107         ir_node   *ins[3] = {bblock_id, bblock_counts, bblock_count};
 108         ident     *name = new_id_from_str("__firmprof_initializer");
 109         entity    *ent = new_entity(get_glob_type(), name, new_type_method(name, 0, 0));
 110         ir_node   *ret, *call;
 111
 112         ident     *init_name = new_id_from_str("__init_firmprof");
 113         type      *init_type = new_type_method(init_name, 3, 0);
 114         /* TODO */
 115         set_method_param_type(init_type, 0, arrayptr);
 116         set_method_param_type(init_type, 1, arrayptr);
 117         set_method_param_type(init_type, 2, uint);
 118         entify    *init_ent = new_entity(get_glob_type(), init_name, init_type);
 119
 120         irg = new_ir_graph(ent, 0);
 121         bb = get_cur_block();
 122
 123         call = new_r_Call( irg,
 124                         bb,                                                     //ir_node *     block,
 125                         get_irn_initial_mem(irg),       //ir_node *     store,
 126                         ir_node *       callee,
 127                         3,                                                      //int   arity,
 128                         ins,                                            //ir_node **    in,
 129                         ir_type *       tp
 130                         );
 131
 132         ret = new_r_Return ( irg,
 133                         bb,                                                                             //ir_node *     block,
 134                         new_r_Proj(irg, bb, call, mode_M, 0),   //ir_node *     store,
 135                         0,                                                                              //int   arity,
 136                         NULL                                                                    //ir_node **    in
 137                         );
 138
 139         mature_immBlock(bb);
 140
 141         add_immBlock_pred(get_irg_end_block(irg), ret);
 142         mature_immBlock(get_irg_end_block(irg));
 143
 144         return irg;
 145 }
 146
 147 static void
 148 block_id_walker(ir_node * bb, void * data)
 149 {
 150         block_id_walker_data *wd = data;
 151
 152         *wd->array[wd->id] = new_tarval_from_long(get_irn_node_nr(bb), mode_Iu);
 153         instrument_block(bb, wd->symconst, wd->id);
 154         ++wd->id;
 155 }
 156
 157 void
 158 be_profile_instrument(void)
 159 {
 160         int            n, i;
 161         unsigned int   n_blocks = 0;
 162         ir_entity     *bblock_id, *bblock_counts, *bblock_count;
 163         ir_type       *array_type, *integer_type;
 164         tarval       **tarval_array;
 165
 166         block_id_walker_data  wd;
 167         symconst_symbol       sym;
 168
 169         integer_type = new_type_primitive(new_id_from_str("__uint"), mode_Iu);
 170         array_type = new_type_array(new_id_from_str("__block_info_array"), 1, integer_type);
 171         set_array_bounds_int(array_type, 0, 0, n_blocks);
 172         bblock_id = new_entity(get_glob_type(), new_id_from_str("__BLOCK_IDS"), array_type);
 173         bblock_counts = new_entity(get_glob_type(), new_id_from_str("__BLOCK_COUNTS"), array_type);
 174         bblock_count = new_entity(get_glob_type(), new_id_from_str("__N_BLOCKS"), integer_type);
 175
 176         for (n = get_irp_n_irgs()-1; n>=0; --n) {
 177                 ir_graph      *irg = get_irp_irg(n);
 178
 179                 n_blocks += count_blocks(irg);
 180         }
 181
 182         /* initialize count array */
 183         tarval_array = alloca(sizeof(*null_array)*n_blocks);
 184         for(i=0; i<n_blocks; ++i) {
 185                 null_array[i] = get_tarval_null(mode_Iu);
 186         }
 187         set_array_entitiy_values(bblock_counts, tarval_array, n_blocks);
 188
 189         /* initialize the block count entity */
 190         set_atomic_ent_value(bblock_count, new_Const_long(mode_Iu, n_blocks));
 191
 192         /* generate a symbolic constant pointing to the count array */
 193         sym.entity_p = bblock_count;
 194         wd.symconst = new_SymConst(sym, symconst_addr_ent);
 195
 196         /* initialize block id array and instrument blocks */
 197         wd.array = tarval_array;
 198         wd.id = 0;
 199         for (n = get_irp_n_irgs()-1; n>=0; --n) {
 200                 ir_graph      *irg = get_irp_irg(n);
 201
 202                 irg_block_walk_graph(irg, block_id_walker, null, &wd);
 203         }
 204         set_array_entitiy_values(bblock_id, tarval_array, n_blocks);
 205
 206         gen_initializer_irg(bblock_id, bblock_counts, bblock_count);
 207 }
 208
 209
 210 void
 211 be_profile_read(void)
 212 {
 213
 214 }