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| author | amylaar <amylaar@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-12-19 23:45:40 +0000 |
|---|---|---|
| committer | amylaar <amylaar@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-12-19 23:45:40 +0000 |
| commit | 0e5a3f19eb4d739e93ec477d747f46e93d15c618 (patch) | |
| tree | 9a7330ef1808d113f68adac8b7ead9280b04857b /gcc/sched-rgn.c | |
| parent | 5423cdc447b11cdefaf7ebfcfa7f819b6478e4ac (diff) | |
| download | gcc-0e5a3f19eb4d739e93ec477d747f46e93d15c618.tar.gz | |
* sched-rgn.c (init_regions): Update comment.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@60340 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/sched-rgn.c')
| -rw-r--r-- | gcc/sched-rgn.c | 15 |
1 files changed, 4 insertions, 11 deletions
diff --git a/gcc/sched-rgn.c b/gcc/sched-rgn.c index 38635522e47..570abacc20b 100644 --- a/gcc/sched-rgn.c +++ b/gcc/sched-rgn.c @@ -2909,17 +2909,10 @@ init_regions () dominance_info dom; struct edge_list *edge_list; - /* The scheduler runs after flow; therefore, we can't blindly call - back into find_basic_blocks since doing so could invalidate the - info in global_live_at_start. - - Consider a block consisting entirely of dead stores; after life - analysis it would be a block of NOTE_INSN_DELETED notes. If - we call find_basic_blocks again, then the block would be removed - entirely and invalidate our the register live information. - - We could (should?) recompute register live information. Doing - so may even be beneficial. */ + /* The scheduler runs after estimate_probabilities; therefore, we + can't blindly call back into find_basic_blocks since doing so + could invalidate the branch probability info. We could, + however, call cleanup_cfg. */ edge_list = create_edge_list (); /* Compute the dominators and post dominators. */ |