https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78224
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-11-07
Component|middle-end |tree-optimization
Known to work| |4.7.4
Target Milestone|--- |5.5
Summary|g++ v4.8+ ICE at -O2(-O1 on |[5/6/7 Regression] g++ ICE
|gcc6) and above in |at -O2(-O1 on gcc6) and
|verify_loop_structure, at |above in
|cfgloop.c:1646 |verify_loop_structure, at
| |cfgloop.c:1646
Ever confirmed|0 |1
Known to fail| |4.8.5, 4.9.4, 5.4.0, 6.2.0,
| |7.0
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
t.ii: In function ‘void the_game(float)’:
t.ii:35:6: error: missing PHI def
void the_game(float turn_amount)
^
first_18 = PHI <0(9), 1(2), (7)>
t.ii:35:6: internal compiler error: verify_gimple failed
on the GCC 6 branch and
t.ii:35:6: error: loop with header 3 not in loop tree
void the_game(float turn_amount)
^~~~~~~~
t.ii:35:6: internal compiler error: in verify_loop_structure, at cfgloop.c:1646
0xbd58e6 verify_loop_structure()
/space/rguenther/src/svn/trunk/gcc/cfgloop.c:1646
0xf27531 checking_verify_loop_structure
/space/rguenther/src/svn/trunk/gcc/cfgloop.h:611
0xf276e4 loop_optimizer_init(unsigned int)
/space/rguenther/src/svn/trunk/gcc/loop-init.c:129
0x1346b7d tree_ssa_cs_elim
/space/rguenther/src/svn/trunk/gcc/tree-ssa-phiopt.c:116
on trunk.
