diff options
Diffstat (limited to 'gcc/cfgloopmanip.c')
| -rw-r--r-- | gcc/cfgloopmanip.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/gcc/cfgloopmanip.c b/gcc/cfgloopmanip.c index dc088440f44..d5bd216e08c 100644 --- a/gcc/cfgloopmanip.c +++ b/gcc/cfgloopmanip.c @@ -1,5 +1,6 @@ /* Loop manipulation code for GNU compiler. - Copyright (C) 2002, 2003, 2004, 2005, 2007 Free Software Foundation, Inc. + Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008 Free Software + Foundation, Inc. This file is part of GCC. @@ -1361,8 +1362,8 @@ loop_version (struct loop *loop, free (bbs); } - /* At this point condition_bb is loop predheader with two successors, - first_head and second_head. Make sure that loop predheader has only + /* At this point condition_bb is loop preheader with two successors, + first_head and second_head. Make sure that loop preheader has only one successor. */ split_edge (loop_preheader_edge (loop)); split_edge (loop_preheader_edge (nloop)); @@ -1375,7 +1376,7 @@ loop_version (struct loop *loop, removed (thus the loop nesting may be wrong), and some blocks and edges were changed (so the information about bb --> loop mapping does not have to be correct). But still for the remaining loops the header dominates - the latch, and loops did not get new subloobs (new loops might possibly + the latch, and loops did not get new subloops (new loops might possibly get created, but we are not interested in them). Fix up the mess. If CHANGED_BBS is not NULL, basic blocks whose loop has changed are |