[Bug rtl-optimization/59743] New: [4.9 Regression] ICE: Segmentation fault
trippels at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Thu Jan 9 20:41:00 GMT 2014
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59743
Bug ID: 59743
Summary: [4.9 Regression] ICE: Segmentation fault
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: trippels at gcc dot gnu.org
reduced test case:
typedef union {
long all;
struct {
int low;
int high;
} s;
} udwords;
int a, b, c, d;
void __udivmoddi4() {
udwords r;
d = __builtin_clz(0);
r.s.low = 0;
for (; d; --d) {
r.s.high = r.s.high << 1 | r.s.low >> a;
r.s.low = r.s.low << b >> 1;
int s = -r.all;
c = s;
r.all--;
}
}
% g++ -O2 -c test.ii
test.ii: In function ‘void __udivmoddi4()’:
test.ii:20:1: internal compiler error: Segmentation fault
}
^
0xb4f8df crash_signal
../../gcc/gcc/toplev.c:337
0xb056c9 reg_used_between_p(rtx_def const*, rtx_def const*, rtx_def const*)
../../gcc/gcc/rtlanal.c:753
0x103e6eb combine_reaching_defs
../../gcc/gcc/ree.c:734
0x103e6eb find_and_remove_re
../../gcc/gcc/ree.c:973
0x103e6eb rest_of_handle_ree
../../gcc/gcc/ree.c:1035
0x103e6eb execute
../../gcc/gcc/ree.c:1074
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