https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68088
Bug ID: 68088
Summary: [6 Regression] ICE: RTL check: expected code 'reg',
have 'subreg' in rhs_regno, at rtl.h:1782 @ aarch64
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Created attachment 36581
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36581&action=edit
reduced testcase
This ICE happened when building libdebug with an x86_64 -> aarch64
crosscompiler.
RTL checking must be enabled.
$ cc1 -quiet testcase.c -O2
testcase.c: In function 'foo':
testcase.c:13:5: internal compiler error: RTL check: expected code 'reg', have
'subreg' in rhs_regno, at rtl.h:1782
}
^
0xa90e27 rtl_check_failed_code1(rtx_def const*, rtx_code, char const*, int,
char const*)
/mnt/svn/gcc-trunk/gcc/rtl.c:811
0x551cb2 rhs_regno
/mnt/svn/gcc-trunk/gcc/rtl.h:1782
0xe42a00 rhs_regno
/mnt/svn/gcc-trunk/gcc/config/arm/aarch-common.c:429
0xe42a00 aarch_accumulator_forwarding(rtx_insn*, rtx_insn*)
/mnt/svn/gcc-trunk/gcc/config/arm/aarch-common.c:463
0xf08450 internal_insn_latency
/home/smatz/build-229293-lto-fortran-checking-yes-rtl-df-disable-bootstrap-disable-graphite-aarch64/gcc/insn-automata.c:22594
0xf08450 insn_latency(rtx_def*, rtx_def*)
/home/smatz/build-229293-lto-fortran-checking-yes-rtl-df-disable-bootstrap-disable-graphite-aarch64/gcc/insn-automata.c:23777
0x11075ea dep_cost_1(_dep*, unsigned int)
/mnt/svn/gcc-trunk/gcc/haifa-sched.c:1489
0x11093ef dep_cost
/mnt/svn/gcc-trunk/gcc/haifa-sched.c:1530
0x11093ef priority
/mnt/svn/gcc-trunk/gcc/haifa-sched.c:1681
0x11094f0 set_priorities(rtx_insn*, rtx_insn*)
/mnt/svn/gcc-trunk/gcc/haifa-sched.c:7213
0xaaab8c compute_priorities()
/mnt/svn/gcc-trunk/gcc/sched-rgn.c:2921
0xaadb3d schedule_region
/mnt/svn/gcc-trunk/gcc/sched-rgn.c:3014
0xaadb3d schedule_insns
/mnt/svn/gcc-trunk/gcc/sched-rgn.c:3412
0xaae2f3 schedule_insns
/mnt/svn/gcc-trunk/gcc/sched-rgn.c:3397
0xaae2f3 rest_of_handle_sched
/mnt/svn/gcc-trunk/gcc/sched-rgn.c:3616
0xaae2f3 execute
/mnt/svn/gcc-trunk/gcc/sched-rgn.c:3724
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$ xgcc -v
Using built-in specs.
COLLECT_GCC=/home/smatz/build-229293-lto-fortran-checking-yes-rtl-df-disable-bootstrap-disable-graphite-aarch64//gcc/xgcc
Target: aarch64-unknown-linux-gnu
Configured with: /mnt/svn/gcc-trunk//configure --disable-bootstrap
--enable-checking=yes,rtl,df --enable-languages=c,c++,lto,fortran
--prefix=/mnt/svn/gcc-trunk/binary-229293-lto-fortran-checking-yes-rtl-df-disable-bootstrap-disable-graphite-aarch64/
--without-cloog --without-ppl --without-isl --host=x86_64-pc-linux-gnu
--target=aarch64-unknown-linux-gnu --build=x86_64-pc-linux-gnu
--with-sysroot=/home/aarch64-chroot
Thread model: posix
gcc version 6.0.0 20151025 (experimental) (GCC)
Tested revisions:
r229293 - ICE
5-branch r229292 - OK
4_9-branch r229291 - OK
