https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68835
Bug ID: 68835
Summary: ICE in set_value_range, at tree-vrp.c:387, with
__int128 bit field
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: arnez at linux dot vnet.ibm.com
Target Milestone: ---
"tst.c":
unsigned __int128
foo (unsigned long a, unsigned long b)
{
unsigned __int128 x = (unsigned __int128) a * b;
struct { unsigned __int128 a: 96; } w;
w.a = x;
return w.a;
}
$ gcc -O2 -c -o tst.o tst.c
tst.c: In function ‘foo’:
tst.c:2:1: internal compiler error: in set_value_range, at tree-vrp.c:387
foo (unsigned long a, unsigned long b)
^~~
0xd94363 set_value_range
/home/arnez/gtools/gcc/gcc/tree-vrp.c:387
0xda878d set_value_range_to_nonnegative
/home/arnez/gtools/gcc/gcc/tree-vrp.c:586
0xda878d extract_range_basic
/home/arnez/gtools/gcc/gcc/tree-vrp.c:4110
0xda9e5a extract_range_from_assignment
/home/arnez/gtools/gcc/gcc/tree-vrp.c:4154
0xdab5d8 vrp_visit_assignment_or_call
/home/arnez/gtools/gcc/gcc/tree-vrp.c:7033
0xdabeba vrp_visit_stmt
/home/arnez/gtools/gcc/gcc/tree-vrp.c:7913
0xcb3abd simulate_stmt
/home/arnez/gtools/gcc/gcc/tree-ssa-propagate.c:331
0xcb4447 simulate_block
/home/arnez/gtools/gcc/gcc/tree-ssa-propagate.c:509
0xcb4447 ssa_propagate(ssa_prop_result (*)(gimple*, edge_def**, tree_node**),
ssa_prop_result (*)(gphi*))
/home/arnez/gtools/gcc/gcc/tree-ssa-propagate.c:926
0xda07e7 execute_vrp
/home/arnez/gtools/gcc/gcc/tree-vrp.c:10319
0xda07e7 execute
/home/arnez/gtools/gcc/gcc/tree-vrp.c:10405
