3 * File name: ir/ir/firmstat.c
4 * Purpose: Statistics for Firm.
8 * Copyright: (c) 2004 Universität Karlsruhe
9 * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
15 #include "firmstat_t.h"
19 * calculated the dual logarithm of |value|
21 static unsigned log2abs(long value) {
51 * classify the value of a float tarval
53 static float_classify_t classify_float_value(tarval *tv)
55 ir_mode *mode = get_tarval_mode(tv);
57 if (tv == get_mode_null(mode))
59 else if (tv == get_mode_one(mode))
65 /* return a human readable name for an float classification */
66 const char *stat_fc_name(float_classify_t classification)
68 switch (classification) {
69 case STAT_FC_0: return "0.0";
70 case STAT_FC_1: return "1.0";
71 case STAT_FC_2: return "2.0";
72 case STAT_FC_0_5: return "0.5";
73 case STAT_FC_EXACT: return "exact";
74 case STAT_FC_OTHER: return "other";
75 default: return "<UNKNOWN>";
79 /* update info on Consts */
80 void stat_update_const(stat_info_t *status, ir_node *node, graph_entry_t *graph)
82 ir_mode *mode = get_irn_mode(node);
86 if (mode_is_int(mode)) {
87 tv = get_Const_tarval(node);
90 if (! tarval_is_long(tv))
93 bits = log2abs(get_tarval_long(tv));
95 if (bits > ARR_SIZE(status->const_info.int_bits_count))
96 bits = ARR_SIZE(status->const_info.int_bits_count);
98 cnt_inc(&status->const_info.int_bits_count[bits]);
100 else if (mode_is_float(mode)) {
101 tv = get_Const_tarval(node);
103 cnt_inc(&status->const_info.floats[classify_float_value(tv)]);
106 /* something different */
107 cnt_inc(&status->const_info.others);
111 /* clears the const statistics for a new snapshot */
112 void stat_const_clear(stat_info_t *status)
116 for (i = 0; i < ARR_SIZE(status->const_info.int_bits_count); ++i)
117 cnt_clr(&status->const_info.int_bits_count[i]);
119 for (i = 0; i < ARR_SIZE(status->const_info.floats); ++i)
120 cnt_clr(&status->const_info.floats[i]);
122 cnt_clr(&status->const_info.others);
125 /* initialize the Const statistic. */
126 void stat_init_const_cnt(stat_info_t *status)