https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71142
Bug ID: 71142
Summary: [6/7 Regression] ICE: Segmentation fault in
ssa_default_def
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ktkachov at gcc dot gnu.org
Target Milestone: ---
Target: aarch64
The testcase:
int a, b, d, e;
int c[10];
short f;
unsigned g;
void
fn1 ()
{
int *h = &d;
for (; f; f--)
{
a = 0;
for (; a <= 1; a++)
{
d = 1;
for (; d >= 0; d--)
{
b = 0;
for (; b < 7; b++)
c[b] = b;
}
*h ^= g;
}
}
*h = *h & e;
}
ICEs on aarch64-none-linux-gnu with -Ofast -floop-interchange:
mycrash.c: In function 'fn1':
mycrash.c:7:1: internal compiler error: Segmentation fault
fn1 ()
^~~
0xb02b4f crash_signal
$SRC/gcc/toplev.c:335
0xb58db5 ssa_default_def(function*, tree_node*)
$SRC/gcc/tree-dfa.c:305
0xb5b9c4 get_or_create_ssa_default_def(function*, tree_node*)
$SRC/gcc/tree-dfa.c:357
0xb9665f get_reaching_def
$SRC/gcc/tree-into-ssa.c:1168
0xb9b6b4 rewrite_update_phi_arguments
$SRC/gcc/tree-into-ssa.c:2017
0xb9b6b4 rewrite_update_dom_walker::before_dom_children(basic_block_def*)
$SRC/gcc/tree-into-ssa.c:2137
0x1063b49 dom_walker::walk(basic_block_def*)
$SRC/gcc/domwalk.c:265
0xb9427c rewrite_blocks
$SRC/gcc/tree-into-ssa.c:2194
0xb9cccf update_ssa(unsigned int)
$SRC/gcc/tree-into-ssa.c:3356
0x1091de5 graphite_regenerate_ast_isl(scop*)
$SRC/gcc/graphite-isl-ast-to-gimple.c:3204
0x1088995 graphite_transform_loops()
$SRC/gcc/graphite.c:329
0x1088b34 graphite_transforms
$SRC/gcc/graphite.c:356
0x1088b34 execute
$SRC/gcc/graphite.c:433
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
