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| author | Steven Bosscher <steven@gcc.gnu.org> | 2012-10-11 18:54:47 +0000 |
|---|---|---|
| committer | Steven Bosscher <steven@gcc.gnu.org> | 2012-10-11 18:54:47 +0000 |
| commit | e6a7da82a98953d0c817367d410ccb080861b7da (patch) | |
| tree | c1dfc7cfd88768e4decf85c593946bf539aa4254 /gcc/ira-lives.c | |
| parent | d2a934a5a55627c87d94fda02d563aa9b69390be (diff) | |
| download | gcc-e6a7da82a98953d0c817367d410ccb080861b7da.zip gcc-e6a7da82a98953d0c817367d410ccb080861b7da.tar.gz gcc-e6a7da82a98953d0c817367d410ccb080861b7da.tar.bz2 | |
ira-build.c (ira_loop_tree_body_rev_postorder): New function.
* ira-build.c (ira_loop_tree_body_rev_postorder): New function.
(ira_traverse_loop_tree): Traverse a loop's basic blocks in
reverse post-order of the reversed control-flow direction.
* ira-conflicts.c (ira_build_conflicts): Pass add_copies as
the pre-order function to ira_traverse_loop_tree to preserve
the existing semantics.
* ira-lives.c (remove_some_program_points_and_update_live_ranges):
Squeeze out live range chain elements if their program points are
connected.
From-SVN: r192378
Diffstat (limited to 'gcc/ira-lives.c')
| -rw-r--r-- | gcc/ira-lives.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/gcc/ira-lives.c b/gcc/ira-lives.c index 853832e..109e3c4 100644 --- a/gcc/ira-lives.c +++ b/gcc/ira-lives.c @@ -1458,7 +1458,7 @@ remove_some_program_points_and_update_live_ranges (void) int *map; ira_object_t obj; ira_object_iterator oi; - live_range_t r; + 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; @@ -1502,10 +1502,19 @@ remove_some_program_points_and_update_live_ranges (void) ira_max_point = n; FOR_EACH_OBJECT (obj, oi) - for (r = OBJECT_LIVE_RANGES (obj); r != NULL; r = r->next) + for (r = OBJECT_LIVE_RANGES (obj), prev_r = NULL; r != NULL; r = next_r) { + next_r = r->next; r->start = map[r->start]; r->finish = map[r->finish]; + if (prev_r == NULL || prev_r->start > r->finish + 1) + { + prev_r = r; + continue; + } + prev_r->start = r->start; + prev_r->next = next_r; + ira_finish_live_range (r); } ira_free (map); |