diff options
Diffstat (limited to 'libgcc/libgcov-profiler.c')
| -rw-r--r-- | libgcc/libgcov-profiler.c | 51 |
1 files changed, 1 insertions, 50 deletions
diff --git a/libgcc/libgcov-profiler.c b/libgcc/libgcov-profiler.c index 6043ac4..45ab93c 100644 --- a/libgcc/libgcov-profiler.c +++ b/libgcc/libgcov-profiler.c @@ -26,17 +26,6 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see #include "libgcov.h" #if !defined(inhibit_libc) -/* Detect whether target can support atomic update of profilers. */ -#if __SIZEOF_LONG_LONG__ == 4 && __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 -#define GCOV_SUPPORTS_ATOMIC 1 -#else -#if __SIZEOF_LONG_LONG__ == 8 && __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8 -#define GCOV_SUPPORTS_ATOMIC 1 -#else -#define GCOV_SUPPORTS_ATOMIC 0 -#endif -#endif - #ifdef L_gcov_interval_profiler /* If VALUE is in interval <START, START + STEPS - 1>, then increases the corresponding counter in COUNTERS. If the VALUE is above or below @@ -105,51 +94,13 @@ __gcov_pow2_profiler_atomic (gcov_type *counters, gcov_type value) } #endif - /* Tries to determine N most commons value among its inputs. */ static inline void __gcov_topn_values_profiler_body (gcov_type *counters, gcov_type value, int use_atomic) { - if (use_atomic) - __atomic_fetch_add (&counters[0], 1, __ATOMIC_RELAXED); - else - counters[0]++; - - ++counters; - - /* First try to find an existing value. */ - int empty_counter = -1; - - for (unsigned i = 0; i < GCOV_TOPN_VALUES; i++) - if (value == counters[2 * i]) - { - if (use_atomic) - __atomic_fetch_add (&counters[2 * i + 1], GCOV_TOPN_VALUES, - __ATOMIC_RELAXED); - else - counters[2 * i + 1] += GCOV_TOPN_VALUES; - return; - } - else if (counters[2 * i + 1] <= 0) - empty_counter = i; - - /* Find an empty slot for a new value. */ - if (empty_counter != -1) - { - counters[2 * empty_counter] = value; - counters[2 * empty_counter + 1] = GCOV_TOPN_VALUES; - return; - } - - /* We haven't found an empty slot, then decrement all - counter values by one. */ - for (unsigned i = 0; i < GCOV_TOPN_VALUES; i++) - if (use_atomic) - __atomic_fetch_sub (&counters[2 * i + 1], 1, __ATOMIC_RELAXED); - else - counters[2 * i + 1]--; + gcov_topn_add_value (counters, value, 1, use_atomic, 1); } #ifdef L_gcov_topn_values_profiler |