diff options
| author | amacleod <amacleod@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-12-04 14:26:37 +0000 |
|---|---|---|
| committer | amacleod <amacleod@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-12-04 14:26:37 +0000 |
| commit | 30928c4431bf4b4f73d99fce9041d97b08ca381d (patch) | |
| tree | 1ac424d69eb81d98ca1dcefd9fc5e39a0fef503e /gcc/tree-outof-ssa.c | |
| parent | cd23ba5d0fc9ece814e90b9d193f807745593a7b (diff) | |
| download | gcc-30928c4431bf4b4f73d99fce9041d97b08ca381d.tar.gz | |
Switch live on entry to a per block basis from per variable.
* tree-outof-ssa.c (coalesce_ssa_name): Use calculate_live_ranges.
* tree-ssa-live.c (new_tree_live_info, delete_tree_live_info): Update.
(add_livein_if_notdef): Delete.
(loe_visit_block): New. Propogate live on entry info for a block into
each predecessor. If it changes, make sure it is visited again.
(live_worklist): Visit every block and update the live on entry info
for preds. Iterate over any that changed.
(set_var_live_on_entry): Populate the live on entry blocks with bits
based on the immediate uses of a var.
(calculate_live_on_entry): Remove.
(calculate_live_on_exit): Calculate live on exit based on the newly
oriented live on entry bits.
(calculate_live_ranges): Build live on entry and exit vectors.
(dump_live_info): Use new orientation of live on entry bitmaps.
(verify_live_on_entry): New. Split out verification code from old
calculate_live_on_entry routine.
* tree-ssa-live.h (struct tree_live_info_d): Add Working stack.
(live_entry_blocks): Rename to live_on_entry and return bitmap for a
basic_block instead of for a partition.
(live_merge_and_clear): Add asserts.
(make_live_on_entry): Set partition bit in basic block vector.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@119495 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-outof-ssa.c')
| -rw-r--r-- | gcc/tree-outof-ssa.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/gcc/tree-outof-ssa.c b/gcc/tree-outof-ssa.c index 1bd531a1b65..3a7d0171b63 100644 --- a/gcc/tree-outof-ssa.c +++ b/gcc/tree-outof-ssa.c @@ -822,8 +822,7 @@ coalesce_ssa_name (var_map map, int flags) if (num_var_partitions (map) <= 1) return NULL; - liveinfo = calculate_live_on_entry (map); - calculate_live_on_exit (liveinfo); + liveinfo = calculate_live_ranges (map); rv = root_var_init (map); /* Remove single element variable from the list. */ |