https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89438
Bug ID: 89438
Summary: [9 Regression] ICE in
glibc/sysdeps/ieee754/dbl-64/e_pow.c (internal
compiler error: in decompose, at rtl.h:2266)
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: przemyslaw.wirkus at arm dot com
Target Milestone: ---
# GCC Version
revision r268990
# Host system type
Linux machine 4.15.0-43-generic #46-Ubuntu SMP Thu Dec 6 14:45:28 UTC 2018
x86_64 x86_64 x86_64 GNU/Linux
Ubuntu 18.04.2 LTS
# Options given when GCC was configured/built (gcc2 stage)
--target=arm-none-linux-gnueabi \
--enable-shared \
--disable-libatomic \
--without-cloog \
--without-isl \
--disable-libssp \
--disable-libgomp \
--disable-libmudflap \
--disable-libquadmath \
--enable-checking=yes \
--enable-languages=c \
--with-float=softfp \
--with-fpu=crypto-neon-fp-armv8 \
--with-mode=thumb \
--with-arch=armv8-a \
--with-arch=armv7-a
# Reduced testcase and command line that triggers the bug
$ cat e_pow_cpp.c
typedef double a;
struct {
double b;
double c;
struct {
double d, e
} f[]
} g;
h, i, j;
double k;
double l() {
int m;
if (j)
return;
long ix, p = ix - 80;
a kd, n;
n = kd * h + g.f[p].e;
m = n;
a o = 1 ? m : 1.0;
k = i ? -o : o;
return k;
}
$ ./arm-none-linux-gnueabi-gcc -O2 -g e_pow_cpp.c -S -w -march=armv8-a
-mfloat-abi=softfp -mfpu=crypto-neon-fp-armv8
during RTL pass: vartrack
e_pow_cpp.c: In function ‘l’:
e_pow_cpp.c:22:1: internal compiler error: in decompose, at rtl.h:2266
22 | }
| ^
0xbbc00f wi::int_traits<std::pair<rtx_def*, machine_mode> >::decompose(long*,
unsigned int, std::pair<rtx_def*, machine_mode> const&)
$src/gcc/gcc/rtl.h:2264
0xbbc00f wide_int_ref_storage<false,
false>::wide_int_ref_storage<std::pair<rtx_def*, machine_mode>
>(std::pair<rtx_def*, machine_mode> const&, unsigned int)
$src/gcc/gcc/wide-int.h:1013
0xbbc00f generic_wide_int<wide_int_ref_storage<false, false>
>::generic_wide_int<std::pair<rtx_def*, machine_mode> >(std::pair<rtx_def*,
machine_mode> const&, unsigned int)
$src/gcc/gcc/wide-int.h:788
0xbbc00f wi::binary_traits<std::pair<rtx_def*, machine_mode>,
std::pair<rtx_def*, machine_mode>, wi::int_traits<std::pair<rtx_def*,
machine_mode> >::precision_type, wi::int_traits<std::pair<rtx_def*,
machine_mode> >::precision_type>::result_type wi::sub<std::pair<rtx_def*,
machine_mode>, std::pair<rtx_def*, machine_mode> >(std::pair<rtx_def*,
machine_mode> const&, std::pair<rtx_def*, machine_mode> const&)
$src/gcc/gcc/wide-int.h:2488
0xbbc00f simplify_const_binary_operation(rtx_code, machine_mode, rtx_def*,
rtx_def*)
$src/gcc/gcc/simplify-rtx.c:4282
0xbb9a7f simplify_binary_operation(rtx_code, machine_mode, rtx_def*, rtx_def*)
$src/gcc/gcc/simplify-rtx.c:2164
0xbc566b simplify_plus_minus
$src/gcc/gcc/simplify-rtx.c:4686
0xbb62ab simplify_binary_operation_1
$src/gcc/gcc/simplify-rtx.c:2388
0xbb9acd simplify_binary_operation(rtx_code, machine_mode, rtx_def*, rtx_def*)
$src/gcc/gcc/simplify-rtx.c:2167
0x780327 cselib_expand_value_rtx_1
$src/gcc/gcc/cselib.c:1856
0x781c8e cselib_expand_value_rtx_cb(rtx_def*, bitmap_head*, int, rtx_def*
(*)(rtx_def*, bitmap_head*, int, void*), void*)
$src/gcc/gcc/cselib.c:1562
0xf11ef1 vt_expand_var_loc_chain
$src/gcc/gcc/var-tracking.c:8384
0xf11ef1 vt_expand_loc_callback
$src/gcc/gcc/var-tracking.c:8547
0x780242 cselib_expand_value_rtx_1
$src/gcc/gcc/cselib.c:1716
0x77ffc5 cselib_expand_value_rtx_1
$src/gcc/gcc/cselib.c:1755
0x781c8e cselib_expand_value_rtx_cb(rtx_def*, bitmap_head*, int, rtx_def*
(*)(rtx_def*, bitmap_head*, int, void*), void*)
$src/gcc/gcc/cselib.c:1562
0xf11ef1 vt_expand_var_loc_chain
$src/gcc/gcc/var-tracking.c:8384
0xf11ef1 vt_expand_loc_callback
$src/gcc/gcc/var-tracking.c:8547
0x780242 cselib_expand_value_rtx_1
$src/gcc/gcc/cselib.c:1716
0x77ffc5 cselib_expand_value_rtx_1
$src/gcc/gcc/cselib.c:1755
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.
