https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106450
Bug ID: 106450
Summary: [13 Regression] ICE in final_scan_insn_1, at
final.cc:2860 (error: could not split insn)
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
Target: x86_64-unknown-linux-gnu
gcc 13.0.0 20220724 snapshot (g:8b8103dcd2624936bd1f56ac2ee63d1fb779a7e4) ICEs
when compiling the following testcase w/ -O2 -fsplit-paths:
__int128 n;
__attribute__ ((simd)) void
foo (void)
{
__int128 uninitialized;
unsigned __int128 *p = &n;
n >>= *p ? : 2;
n |= uninitialized;
}
% x86_64-unknown-linux-gnu-gcc-13.0.0 -O2 -fsplit-paths -c bov4bfel.c
bov4bfel.c: In function 'foo.simdclone.0':
bov4bfel.c:11:1: error: could not split insn
11 | }
| ^
(insn:TI 14 75 61 4 (parallel [
(set (reg:TI 0 ax [92])
(ior:TI (reg:TI 0 ax [91])
(mem/c:V1TI (plus:DI (reg/f:DI 7 sp)
(const_int -24 [0xffffffffffffffe8])) [2 %sfp+-16
S16 A128])))
(clobber (reg:CC 17 flags))
]) "bov4bfel.c":10:5 573 {*iorti3_doubleword}
(expr_list:REG_UNUSED (reg:CC 17 flags)
(expr_list:REG_EQUIV (mem/c:TI (symbol_ref:DI ("n") [flags 0x2]
<var_decl 0x7f1053cffbd0 n>) [1 n+0 S16 A128])
(nil))))
during RTL pass: final
bov4bfel.c:11:1: internal compiler error: in final_scan_insn_1, at
final.cc:2860
0x72828d _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220724/work/gcc-13-20220724/gcc/rtl-error.cc:108
0x6bc8a6 final_scan_insn_1
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220724/work/gcc-13-20220724/gcc/final.cc:2860
0xb3597b final_scan_insn(rtx_insn*, _IO_FILE*, int, int, int*)
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220724/work/gcc-13-20220724/gcc/final.cc:2939
0xb35b24 final_1
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220724/work/gcc-13-20220724/gcc/final.cc:1996
0xb366d6 rest_of_handle_final
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220724/work/gcc-13-20220724/gcc/final.cc:4284
0xb366d6 execute
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220724/work/gcc-13-20220724/gcc/final.cc:4364
