https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87596
Bug ID: 87596
Summary: [9 Regression] ICE: Segmentation fault (in
spill_hard_reg_in_range)
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-on-invalid-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-pc-linux-gnu
gcc-9.0.0-alpha20181007 snapshot (r264906) ICEs when compiling the following
snippet w/ -O1 -fschedule-insns -ftrapv -funroll-all-loops
-fno-tree-dominator-opts -fno-tree-loop-im:
void
wh (__int128 *ku)
{
unsigned int *dp;
while (*ku < 1)
{
*dp <<= 32;
++*ku;
}
}
% x86_64-pc-linux-gnu-gcc-9.0.0-alpha20181007 -O1 -fschedule-insns -ftrapv
-funroll-all-loops -fno-tree-dominator-opts -fno-tree-loop-im -w -c hqi6wtxn.c
--verbose
Using built-in specs.
COLLECT_GCC=x86_64-pc-linux-gnu-gcc-9.0.0-alpha20181007
Target: x86_64-pc-linux-gnu
Configured with:
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181007/work/gcc-9-20181007/configure
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr
--bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/9.0.0-alpha20181007
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/9.0.0-alpha20181007/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/9.0.0-alpha20181007
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/9.0.0-alpha20181007/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/9.0.0-alpha20181007/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/9.0.0-alpha20181007/include/g++-v9
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/9.0.0-alpha20181007/python
--enable-languages=c,c++ --enable-obsolete --enable-secureplt --disable-werror
--with-system-zlib --disable-nls --enable-checking=yes --disable-esp
--enable-libstdcxx-time --disable-libstdcxx-pch --enable-shared
--enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu
--disable-multilib --with-multilib-list=m64 --disable-altivec
--disable-fixed-point --enable-targets=all --enable-libgomp
--disable-libmudflap --disable-libssp --disable-libmpx --disable-systemtap
--disable-vtable-verify --disable-libvtv --disable-libquadmath --enable-lto
--with-isl --disable-isl-version-check --disable-libsanitizer
--enable-default-pie --enable-default-ssp
Thread model: posix
gcc version 9.0.0-alpha20181007 20181007 (experimental) (GCC)
COLLECT_GCC_OPTIONS='-O1' '-fschedule-insns' '-ftrapv' '-funroll-all-loops'
'-fno-tree-dominator-opts' '-fno-tree-loop-im' '-w' '-c' '-v' '-mtune=generic'
'-march=x86-64'
/usr/libexec/gcc/x86_64-pc-linux-gnu/9.0.0-alpha20181007/cc1 -quiet -v
hqi6wtxn.c -quiet -dumpbase hqi6wtxn.c -mtune=generic -march=x86-64 -auxbase
hqi6wtxn -O1 -w -version -fschedule-insns -ftrapv -funroll-all-loops
-fno-tree-dominator-opts -fno-tree-loop-im -o /tmp/ccyANUGf.s
GNU C17 (GCC) version 9.0.0-alpha20181007 20181007 (experimental)
(x86_64-pc-linux-gnu)
compiled by GNU C version 9.0.0-alpha20181007 20181007 (experimental),
GMP version 6.1.2, MPFR version 4.0.1, MPC version 1.1.0, isl version
isl-0.20-GMP
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
ignoring nonexistent directory "/usr/local/include"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-pc-linux-gnu/9.0.0-alpha20181007/../../../../x86_64-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/lib/gcc/x86_64-pc-linux-gnu/9.0.0-alpha20181007/include
/usr/lib/gcc/x86_64-pc-linux-gnu/9.0.0-alpha20181007/include-fixed
/usr/include
End of search list.
GNU C17 (GCC) version 9.0.0-alpha20181007 20181007 (experimental)
(x86_64-pc-linux-gnu)
compiled by GNU C version 9.0.0-alpha20181007 20181007 (experimental),
GMP version 6.1.2, MPFR version 4.0.1, MPC version 1.1.0, isl version
isl-0.20-GMP
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 944ea03bbc79d22116715d58fe1da818
during RTL pass: reload
hqi6wtxn.c: In function 'wh':
hqi6wtxn.c:11:1: internal compiler error: Segmentation fault
11 | }
| ^
0xcca8df crash_signal
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181007/work/gcc-9-20181007/gcc/toplev.c:325
0xb62a51 spill_hard_reg_in_range(int, reg_class, rtx_insn*, rtx_insn*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181007/work/gcc-9-20181007/gcc/lra-constraints.c:5700
0xb5518f lra_split_hard_reg_for()
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181007/work/gcc-9-20181007/gcc/lra-assigns.c:1765
0xb4fb75 lra(_IO_FILE*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181007/work/gcc-9-20181007/gcc/lra.c:2533
0xb07b71 do_reload
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181007/work/gcc-9-20181007/gcc/ira.c:5469
0xb07b71 execute
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181007/work/gcc-9-20181007/gcc/ira.c:5653
