diff options
Diffstat (limited to 'gcc/lra-lives.c')
| -rw-r--r-- | gcc/lra-lives.c | 55 |
1 files changed, 24 insertions, 31 deletions
diff --git a/gcc/lra-lives.c b/gcc/lra-lives.c index 9dfffb6f287..ad13633ccd8 100644 --- a/gcc/lra-lives.c +++ b/gcc/lra-lives.c @@ -28,6 +28,7 @@ along with GCC; see the file COPYING3. If not see #include "config.h" #include "system.h" #include "coretypes.h" +#include "bitvec.h" #include "tm.h" #include "hard-reg-set.h" #include "rtl.h" @@ -1047,50 +1048,42 @@ remove_some_program_points_and_update_live_ranges (void) int n, max_regno; int *map; lra_live_range_t r, prev_r, next_r; - sbitmap born_or_dead, born, dead; - sbitmap_iterator sbi; bool born_p, dead_p, prev_born_p, prev_dead_p; - born = sbitmap_alloc (lra_live_max_point); - dead = sbitmap_alloc (lra_live_max_point); - bitmap_clear (born); - bitmap_clear (dead); + stack_bitvec born (lra_live_max_point), dead (lra_live_max_point); max_regno = max_reg_num (); for (i = FIRST_PSEUDO_REGISTER; i < (unsigned) max_regno; i++) { for (r = lra_reg_info[i].live_ranges; r != NULL; r = r->next) { lra_assert (r->start <= r->finish); - bitmap_set_bit (born, r->start); - bitmap_set_bit (dead, r->finish); + born[r->start] = true; + dead[r->finish] = true; } } - born_or_dead = sbitmap_alloc (lra_live_max_point); - bitmap_ior (born_or_dead, born, dead); + stack_bitvec born_or_dead = born | dead; map = XCNEWVEC (int, lra_live_max_point); n = -1; prev_born_p = prev_dead_p = false; - EXECUTE_IF_SET_IN_BITMAP (born_or_dead, 0, i, sbi) - { - born_p = bitmap_bit_p (born, i); - dead_p = bitmap_bit_p (dead, i); - if ((prev_born_p && ! prev_dead_p && born_p && ! dead_p) - || (prev_dead_p && ! prev_born_p && dead_p && ! born_p)) - { - map[i] = n; - lra_point_freq[n] = MAX (lra_point_freq[n], lra_point_freq[i]); - } - else - { - map[i] = ++n; - lra_point_freq[n] = lra_point_freq[i]; - } - prev_born_p = born_p; - prev_dead_p = dead_p; - } - sbitmap_free (born_or_dead); - sbitmap_free (born); - sbitmap_free (dead); + for (size_t i = born_or_dead.begin (); i < born_or_dead.end (); i++) + if (born_or_dead[i]) + { + born_p = born[i]; + dead_p = dead[i]; + if ((prev_born_p && ! prev_dead_p && born_p && ! dead_p) + || (prev_dead_p && ! prev_born_p && dead_p && ! born_p)) + { + map[i] = n; + lra_point_freq[n] = MAX (lra_point_freq[n], lra_point_freq[i]); + } + else + { + map[i] = ++n; + lra_point_freq[n] = lra_point_freq[i]; + } + prev_born_p = born_p; + prev_dead_p = dead_p; + } n++; if (lra_dump_file != NULL) fprintf (lra_dump_file, "Compressing live ranges: from %d to %d - %d%%\n", |