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| author | Richard Henderson <rth@redhat.com> | 2009-09-29 16:46:02 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2009-09-29 16:46:02 -0700 |
| commit | f8fd49b54950059ad08d6a8cc291ec07fed15108 (patch) | |
| tree | bb03d51f9447daacfa275ffb3949c7371d4bcca9 /gcc/tree-eh.c | |
| parent | 062a5fd1c0c9e72663e792a0e8f4066ef0f074fb (diff) | |
| download | gcc-f8fd49b54950059ad08d6a8cc291ec07fed15108.zip gcc-f8fd49b54950059ad08d6a8cc291ec07fed15108.tar.gz gcc-f8fd49b54950059ad08d6a8cc291ec07fed15108.tar.bz2 | |
tree-eh.c (unsplit_eh): Do not unsplit if there's already an edge to the new destination block.
* tree-eh.c (unsplit_eh): Do not unsplit if there's already
an edge to the new destination block.
From-SVN: r152310
Diffstat (limited to 'gcc/tree-eh.c')
| -rw-r--r-- | gcc/tree-eh.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/tree-eh.c b/gcc/tree-eh.c index 0f5931e..3ed92a5 100644 --- a/gcc/tree-eh.c +++ b/gcc/tree-eh.c @@ -3369,6 +3369,12 @@ unsplit_eh (eh_landing_pad lp) return false; } + /* The new destination block must not already be a destination of + the source block, lest we merge fallthru and eh edges and get + all sorts of confused. */ + if (find_edge (e_in->src, e_out->dest)) + return false; + /* ??? I can't imagine there would be PHI nodes, since by nature of critical edge splitting this block should never have been a dominance frontier. If cfg cleanups somehow confuse this, |