diff options
| author | spop <spop@138bc75d-0d04-0410-961f-82ee72b054a4> | 2008-11-03 16:17:33 +0000 |
|---|---|---|
| committer | spop <spop@138bc75d-0d04-0410-961f-82ee72b054a4> | 2008-11-03 16:17:33 +0000 |
| commit | 2c3933b87b056dce86c72fc95813f10d528e1a50 (patch) | |
| tree | 0945fff32b773460231721e9efc16a21d46d6f8c /gcc/cfghooks.c | |
| parent | b4e5c32de33a35006cc9aa65a94af1fd9a816cd0 (diff) | |
| download | gcc-2c3933b87b056dce86c72fc95813f10d528e1a50.tar.gz | |
2008-11-03 Sebastian Pop <sebastian.pop@amd.com>
* cfghooks.c (split_block): Set BB_IRREDUCIBLE_LOOP and
EDGE_IRREDUCIBLE_LOOP.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@141549 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/cfghooks.c')
| -rw-r--r-- | gcc/cfghooks.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/gcc/cfghooks.c b/gcc/cfghooks.c index 0897b0df565..10c04a8b057 100644 --- a/gcc/cfghooks.c +++ b/gcc/cfghooks.c @@ -425,6 +425,7 @@ edge split_block (basic_block bb, void *i) { basic_block new_bb; + edge res; if (!cfg_hooks->split_block) internal_error ("%s does not support split_block", cfg_hooks->name); @@ -450,7 +451,15 @@ split_block (basic_block bb, void *i) bb->loop_father->latch = new_bb; } - return make_single_succ_edge (bb, new_bb, EDGE_FALLTHRU); + res = make_single_succ_edge (bb, new_bb, EDGE_FALLTHRU); + + if (bb->flags & BB_IRREDUCIBLE_LOOP) + { + new_bb->flags |= BB_IRREDUCIBLE_LOOP; + res->flags |= EDGE_IRREDUCIBLE_LOOP; + } + + return res; } /* Splits block BB just after labels. The newly created edge is returned. */ |