diff options
Diffstat (limited to 'gcc/value-prof.c')
| -rw-r--r-- | gcc/value-prof.c | 84 |
1 files changed, 82 insertions, 2 deletions
diff --git a/gcc/value-prof.c b/gcc/value-prof.c index f23fd68..4734355 100644 --- a/gcc/value-prof.c +++ b/gcc/value-prof.c @@ -248,6 +248,28 @@ dump_histogram_value (FILE *dump_file, histogram_value hist) fprintf (dump_file, ".\n"); break; + case HIST_TYPE_AVERAGE: + fprintf (dump_file, "Average value "); + if (hist->hvalue.counters) + { + fprintf (dump_file, "sum:"HOST_WIDEST_INT_PRINT_DEC + " times:"HOST_WIDEST_INT_PRINT_DEC, + (HOST_WIDEST_INT) hist->hvalue.counters[0], + (HOST_WIDEST_INT) hist->hvalue.counters[1]); + } + fprintf (dump_file, ".\n"); + break; + + case HIST_TYPE_IOR: + fprintf (dump_file, "IOR value "); + if (hist->hvalue.counters) + { + fprintf (dump_file, "ior:"HOST_WIDEST_INT_PRINT_DEC, + (HOST_WIDEST_INT) hist->hvalue.counters[0]); + } + fprintf (dump_file, ".\n"); + break; + case HIST_TYPE_CONST_DELTA: fprintf (dump_file, "Constant delta "); if (hist->hvalue.counters) @@ -1404,6 +1426,45 @@ tree_stringops_transform (block_stmt_iterator *bsi) return true; } +void +stringop_block_profile (tree stmt, unsigned int *expected_align, + HOST_WIDE_INT *expected_size) +{ + histogram_value histogram; + histogram = gimple_histogram_value_of_type (cfun, stmt, HIST_TYPE_AVERAGE); + if (!histogram) + *expected_size = -1; + else + { + gcov_type size; + size = ((histogram->hvalue.counters[0] + + histogram->hvalue.counters[0] / 2) + / histogram->hvalue.counters[0]); + /* Even if we can hold bigger value in SIZE, INT_MAX + is safe "infinity" for code generation strategies. */ + if (size > INT_MAX) + size = INT_MAX; + *expected_size = size; + gimple_remove_histogram_value (cfun, stmt, histogram); + } + histogram = gimple_histogram_value_of_type (cfun, stmt, HIST_TYPE_IOR); + if (!histogram) + *expected_size = -1; + else + { + gcov_type count; + int alignment; + + count = histogram->hvalue.counters[0]; + alignment = 1; + while (!(count & alignment) + && (alignment * 2 * BITS_PER_UNIT)) + alignment <<= 1; + *expected_align = alignment * BITS_PER_UNIT; + gimple_remove_histogram_value (cfun, stmt, histogram); + } +} + struct value_prof_hooks { /* Find list of values for which we want to measure histograms. */ void (*find_values_to_profile) (histogram_values *); @@ -1513,6 +1574,7 @@ tree_stringops_values_to_profile (tree stmt, histogram_values *values) tree fndecl; tree arglist; tree blck_size; + tree dest; enum built_in_function fcode; if (!call) @@ -1526,15 +1588,25 @@ tree_stringops_values_to_profile (tree stmt, histogram_values *values) if (!interesting_stringop_to_profile_p (fndecl, arglist)) return; + dest = TREE_VALUE (arglist); if (fcode == BUILT_IN_BZERO) blck_size = TREE_VALUE (TREE_CHAIN (arglist)); else blck_size = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist))); if (TREE_CODE (blck_size) != INTEGER_CST) + { + VEC_safe_push (histogram_value, heap, *values, + gimple_alloc_histogram_value (cfun, HIST_TYPE_SINGLE_VALUE, + stmt, blck_size)); + VEC_safe_push (histogram_value, heap, *values, + gimple_alloc_histogram_value (cfun, HIST_TYPE_AVERAGE, + stmt, blck_size)); + } + if (TREE_CODE (blck_size) != INTEGER_CST) VEC_safe_push (histogram_value, heap, *values, - gimple_alloc_histogram_value (cfun, HIST_TYPE_SINGLE_VALUE, - stmt, blck_size)); + gimple_alloc_histogram_value (cfun, HIST_TYPE_IOR, + stmt, dest)); } /* Find values inside STMT for that we want to measure histograms and adds @@ -1588,6 +1660,14 @@ tree_find_values_to_profile (histogram_values *values) hist->n_counters = 3; break; + case HIST_TYPE_AVERAGE: + hist->n_counters = 3; + break; + + case HIST_TYPE_IOR: + hist->n_counters = 3; + break; + default: gcc_unreachable (); } |