------- Additional Comments From steven at gcc dot gnu dot org 2005-09-16
17:01 -------
Not being a C++ fan, I reduced it to this C test case:
==================================
extern int *F2 (void) __attribute__ ((__const__));
void
S4 (int *i)
{
int *D2171;
D2171 = F2 ();
L0:
*D2171 = 62;
if (*i != 0) goto L0; else goto L2;
L2:
return;
}
==================================
$ ./cc1 -O2 -fsched-stalled-insns=5 -fsched2-use-superblocks
-funroll-all-loops t.c -fdump-tree-vars -fno-tree-ch
S4
Analyzing compilation unitPerforming intraprocedural optimizations
Assembling functions:
S4
t.c: In function 'S4':
t.c:16: error: too many outgoing branch edges from bb 7
t.c:16: error: too many outgoing branch edges from bb 6
t.c:16: error: too many outgoing branch edges from bb 5
t.c:16: error: too many outgoing branch edges from bb 4
t.c:16: error: too many outgoing branch edges from bb 3
t.c:16: internal compiler error: verify_flow_info failed
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23857
