https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84700
Bug ID: 84700
Summary: ICE on 32-bit BE powerpc targets w/ -misel -O1
Product: gcc
Version: unknown
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: powerpc-*-linux-gnu*, powerpcspe-*-linux-gnu*
gcc from 5 to at least gcc-8.0.0-alpha20180225 snapshot (r257975) inclusive ICE
when compiling the following snippet w/ -misel -O1:
long long int
bk (long long int wi)
{
long long int d0 = wi < 2;
int ga = d0 >= 0;
return d0 + ((wi == 0) ? d0 : ga);
}
% powerpc-e300c3-linux-gnu-gcc-8.0.0-alpha20180225 -misel -O1 -c afkfiar3.c
powerpc-e300c3-linux-gnu-gcc-8.0.0-alpha20180225: internal compiler error:
Segmentation fault signal terminated program cc1
(gdb) where
#0 0x0000000000c24d51 in simplify_const_binary_operation (code=PLUS,
mode=E_SImode, op0=0x7fffea8142a0, op1=0x7fffea8151f8)
at
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180225/work/gcc-8-20180225/gcc/simplify-rtx.c:4032
Backtrace stopped: Cannot access memory at address 0x7ffffbffef50
And gcc 5.4.0:
(gdb) where 10
#0 0x00005555558db8aa in wi::storage_ref::storage_ref(long const*, unsigned
int, unsigned int) ()
#1 0x0000555555906622 in wi::int_traits<generic_wide_int<wide_int_storage>
>::decompose(long*, unsigned int, generic_wide_int<wide_int_storage> const&) ()
#2 0x0000555555905df6 in
wide_int_ref_storage<false>::wide_int_ref_storage<generic_wide_int<wide_int_storage>
>(generic_wide_int<wide_int_storage> const&) ()
#3 0x000055555590572f in generic_wide_int<wide_int_ref_storage<false>
>::generic_wide_int<generic_wide_int<wide_int_storage>
>(generic_wide_int<wide_int_storage> const&) ()
#4 0x0000555555f95aa0 in ?? ()
#5 0x0000555555f95fcf in simplify_subreg(machine_mode, rtx_def*, machine_mode,
unsigned int) ()
#6 0x0000555555f96b54 in simplify_gen_subreg(machine_mode, rtx_def*,
machine_mode, unsigned int) ()
#7 0x00005555565dac73 in ?? ()
#8 0x00005555565da604 in ?? ()
#9 0x00005555565cf80b in ?? ()
(More stack frames follow...)
It looks similar to PR81288 but still reproduces for both powerpc and
powerpcspe.
