https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71263
Bug ID: 71263
Summary: ICE at -O1 and above in 32-bit and 64-bit mode on
x86_64-linux-gnu (in zero_one_operation)
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: chengniansun at gmail dot com
Target Milestone: ---
$: gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/7.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-source-trunk/configure --enable-languages=c,c++,lto
--prefix=/usr/local/gcc-trunk --disable-bootstrap
Thread model: posix
gcc version 7.0.0 20160523 (experimental) [trunk revision 236582] (GCC)
$: gcc-trunk -O1 small.c -m64
small.c: In function ‘fn1’:
small.c:3:6: internal compiler error: in zero_one_operation, at
tree-ssa-reassoc.c:1230
void fn1() { a = a * 8 + -a * b; }
^~~
0xd69d79 zero_one_operation
../../gcc-source-trunk/gcc/tree-ssa-reassoc.c:1229
0xd72232 undistribute_ops_list
../../gcc-source-trunk/gcc/tree-ssa-reassoc.c:1583
0xd72f28 reassociate_bb
../../gcc-source-trunk/gcc/tree-ssa-reassoc.c:5199
0xd72a47 reassociate_bb
../../gcc-source-trunk/gcc/tree-ssa-reassoc.c:5325
0xd75653 do_reassoc
../../gcc-source-trunk/gcc/tree-ssa-reassoc.c:5439
0xd75653 execute_reassoc
../../gcc-source-trunk/gcc/tree-ssa-reassoc.c:5526
0xd75653 execute
../../gcc-source-trunk/gcc/tree-ssa-reassoc.c:5565
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.
$: gcc-trunk -O1 small.c -m32
small.c: In function ‘fn1’:
small.c:3:6: internal compiler error: in zero_one_operation, at
tree-ssa-reassoc.c:1230
void fn1() { a = a * 8 + -a * b; }
^~~
0xd69d79 zero_one_operation
../../gcc-source-trunk/gcc/tree-ssa-reassoc.c:1229
0xd72232 undistribute_ops_list
../../gcc-source-trunk/gcc/tree-ssa-reassoc.c:1583
0xd72f28 reassociate_bb
../../gcc-source-trunk/gcc/tree-ssa-reassoc.c:5199
0xd72a47 reassociate_bb
../../gcc-source-trunk/gcc/tree-ssa-reassoc.c:5325
0xd75653 do_reassoc
../../gcc-source-trunk/gcc/tree-ssa-reassoc.c:5439
0xd75653 execute_reassoc
../../gcc-source-trunk/gcc/tree-ssa-reassoc.c:5526
0xd75653 execute
../../gcc-source-trunk/gcc/tree-ssa-reassoc.c:5565
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.
$:
$: cat small.c
unsigned a;
int b;
void fn1() { a = a * 8 + -a * b; }
int main() { return 0; }
$:
