https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93094
Bug ID: 93094
Summary: [10 Regression] ICE in maybe_gen_insn, at
optabs.c:7433
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
Target: x86_64-unknown-linux-gnu
gcc-10.0.0-alpha20191222 snapshot (r279712) ICEs when compiling the following
testcase w/ -mavx512bw -O3 -fno-tree-pre:
void
ll (char *un, char *rr, int te, int fp, int nb)
{
const int xe = nb & 1;
while (fp-- != 0)
{
if ((rr[0] & xe) == 0)
un[0] = 0;
un += te;
rr += te;
}
}
% x86_64-unknown-linux-gnu-gcc-10.0.0-alpha20191222 -mavx512bw -O3
-fno-tree-pre -c rgldkcen.c
during RTL pass: expand
rgldkcen.c: In function 'll':
rgldkcen.c:9:15: internal compiler error: in maybe_gen_insn, at optabs.c:7433
9 | un[0] = 0;
| ~~~~~~^~~
0x65fcb3 maybe_gen_insn(insn_code, unsigned int, expand_operand*)
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191222/work/gcc-10-20191222/gcc/optabs.c:7433
0xc329db maybe_expand_insn(insn_code, unsigned int, expand_operand*)
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191222/work/gcc-10-20191222/gcc/optabs.c:7477
0xc329db expand_insn(insn_code, unsigned int, expand_operand*)
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191222/work/gcc-10-20191222/gcc/optabs.c:7508
0xaf75ee expand_mask_store_optab_fn
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191222/work/gcc-10-20191222/gcc/internal-fn.c:2542
0x8c9ebe expand_call_stmt
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191222/work/gcc-10-20191222/gcc/cfgexpand.c:2609
0x8c9ebe expand_gimple_stmt_1
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191222/work/gcc-10-20191222/gcc/cfgexpand.c:3679
0x8c9ebe expand_gimple_stmt
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191222/work/gcc-10-20191222/gcc/cfgexpand.c:3844
0x8ce352 expand_gimple_basic_block
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191222/work/gcc-10-20191222/gcc/cfgexpand.c:5884
0x8d02e3 execute
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191222/work/gcc-10-20191222/gcc/cfgexpand.c:6539
