https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91605
Bug ID: 91605
Summary: [10 Regression] ICE in
ix86_avx256_split_vector_move_misalign, at
config/i386/i386-expand.c:489 since r274986
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: edlinger at gcc dot gnu.org, rguenth at gcc dot gnu.org
Target Milestone: ---
Host: x86_64-linux-gnu
Following is causing ICE:
$ cat ice.C
struct A {
__attribute__((__vector_size__(4 * sizeof(double)))) double data;
};
struct B {
A operator*(B);
};
void fn1() {
B x, y;
x *y;
}
$ g++ -fpack-struct -c ice.C -mavx
during RTL pass: expand
ice.C: In function ‘void fn1()’:
ice.C:9:6: internal compiler error: in ix86_avx256_split_vector_move_misalign,
at config/i386/i386-expand.c:489
9 | x *y;
| ^
0x821618 ix86_avx256_split_vector_move_misalign
/home/marxin/Programming/gcc/gcc/config/i386/i386-expand.c:489
0x821618 ix86_expand_vector_move_misalign(machine_mode, rtx_def**)
/home/marxin/Programming/gcc/gcc/config/i386/i386-expand.c:565
0x16447a8 gen_movmisalignv4df(rtx_def*, rtx_def*)
/home/marxin/Programming/gcc/gcc/config/i386/sse.md:1399
0xed1528 maybe_expand_insn(insn_code, unsigned int, expand_operand*)
/home/marxin/Programming/gcc/gcc/optabs.c:7440
0xed1528 expand_insn(insn_code, unsigned int, expand_operand*)
/home/marxin/Programming/gcc/gcc/optabs.c:7471
0xca3d4f expand_assignment(tree_node*, tree_node*, bool)
/home/marxin/Programming/gcc/gcc/expr.c:5030
0xb7e76b expand_call_stmt
/home/marxin/Programming/gcc/gcc/cfgexpand.c:2729
0xb7e76b expand_gimple_stmt_1
/home/marxin/Programming/gcc/gcc/cfgexpand.c:3710
0xb7e76b expand_gimple_stmt
/home/marxin/Programming/gcc/gcc/cfgexpand.c:3875
0xb84231 expand_gimple_basic_block
/home/marxin/Programming/gcc/gcc/cfgexpand.c:5915
0xb85f97 execute
/home/marxin/Programming/gcc/gcc/cfgexpand.c:6538
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
