https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91498
Arseny Solokha <asolokha at gmx dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |asolokha at gmx dot com
--- Comment #9 from Arseny Solokha <asolokha at gmx dot com> ---
(In reply to H.J. Lu from comment #7)
> Our SPEC CPU 2017 failed with
>
> 39 util.c:205:1: error: invalid rtl sharing found in the insn
> 40 205 | }
> 41 | ^
> 42 (insn 29 28 3 2 (set (subreg:V2DI (reg:DI 91) 0)
> 43 (vec_concat:V2DI (mem/c:DI (plus:DI (reg/f:DI 19 frame)
> 44 (const_int -8 [0xfffffffffffffff8])) [0 S8 A64])
> 45 (const_int 0 [0]))) "util.c":134:1 -1
> 46 (nil))
> 47 util.c:205:1: error: shared rtx
> 48 (mem/c:DI (plus:DI (reg/f:DI 19 frame)
> 49 (const_int -8 [0xfffffffffffffff8])) [0 S8 A64])
> 50 during RTL pass: stv
>
> We have an invalid shared rtx.
And the testcase is as simple as:
int
ff (int jn)
{
return jn > 0 ? jn : 0;
}
% x86_64-unknown-linux-gnu-gcc-10.0.0-alpha20190818 -march=nano-3000 -Os -c
f9272pqv.c
f9272pqv.c: In function 'ff':
f9272pqv.c:5:1: error: invalid rtl sharing found in the insn
5 | }
| ^
(insn 18 17 3 2 (set (subreg:V4SI (reg:SI 87) 0)
(vec_merge:V4SI (vec_duplicate:V4SI (mem/c:SI (plus:DI (reg/f:DI 19
frame)
(const_int -4 [0xfffffffffffffffc])) [0 S4 A32]))
(const_vector:V4SI [
(const_int 0 [0]) repeated x4
])
(const_int 1 [0x1]))) "f9272pqv.c":3:1 -1
(nil))
f9272pqv.c:5:1: error: shared rtx
(mem/c:SI (plus:DI (reg/f:DI 19 frame)
(const_int -4 [0xfffffffffffffffc])) [0 S4 A32])
during RTL pass: stv
f9272pqv.c:5:1: internal compiler error: internal consistency failure
0x9f3eca verify_rtx_sharing
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20190818/work/gcc-10-20190818/gcc/emit-rtl.c:2927
0x9f3dba verify_rtx_sharing
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20190818/work/gcc-10-20190818/gcc/emit-rtl.c:2942
0x9f3dba verify_rtx_sharing
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20190818/work/gcc-10-20190818/gcc/emit-rtl.c:2942
0x9f3dba verify_rtx_sharing
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20190818/work/gcc-10-20190818/gcc/emit-rtl.c:2942
0x9f4178 verify_insn_sharing
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20190818/work/gcc-10-20190818/gcc/emit-rtl.c:3013
0x9f79ed verify_rtl_sharing()
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20190818/work/gcc-10-20190818/gcc/emit-rtl.c:3036
0xc7a8f3 execute_function_todo
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20190818/work/gcc-10-20190818/gcc/passes.c:2004
0xc7b536 execute_todo
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20190818/work/gcc-10-20190818/gcc/passes.c:2037
