https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124681
Bug ID: 124681
Summary: ICE: in move_insn, at haifa-sched.cc:5499 with -O2
-fno-dce -mtune=mips-p8700 -march=rv64gv
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Created attachment 64068
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=64068&action=edit
reduced testcase
Compiler output:
$ riscv64-unknown-linux-gnu-gcc -O2 -fno-dce -mtune=mips-p8700 -march=rv64gv
testcase.c -w
during RTL pass: sched1
testcase.c: In function 'foo':
testcase.c:10:1: internal compiler error: in move_insn, at haifa-sched.cc:5499
10 | }
| ^
0x36a7d4d internal_error(char const*, ...)
/repo/gcc-trunk/gcc/diagnostic-global-context.cc:787
0x115256d fancy_abort(char const*, int, char const*)
/repo/gcc-trunk/gcc/diagnostics/context.cc:1813
0x10c1e88 move_insn
/repo/gcc-trunk/gcc/haifa-sched.cc:5499
0x10c1e88 commit_schedule
/repo/gcc-trunk/gcc/haifa-sched.cc:6277
0x3365057 schedule_block(basic_block_def**, void*)
/repo/gcc-trunk/gcc/haifa-sched.cc:7114
0x193e75a schedule_region
/repo/gcc-trunk/gcc/sched-rgn.cc:3218
0x193e75a schedule_insns()
/repo/gcc-trunk/gcc/sched-rgn.cc:3540
0x193eb9c schedule_insns()
/repo/gcc-trunk/gcc/sched-rgn.cc:3526
0x193eb9c rest_of_handle_sched
/repo/gcc-trunk/gcc/sched-rgn.cc:3744
0x193eb9c execute
/repo/gcc-trunk/gcc/sched-rgn.cc:3854
/repo/gcc-trunk/binary-trunk-20260328082301-r16-8319-g48616938660a9f-checking-yes-rtl-df-extra-riscv64/bin/../libexec/gcc/riscv64-unknown-linux-gnu/16.0.1/cc1
-quiet -imultilib . -iprefix
/repo/gcc-trunk/binary-trunk-20260328082301-r16-8319-g48616938660a9f-checking-yes-rtl-df-extra-riscv64/bin/../lib/gcc/riscv64-unknown-linux-gnu/16.0.1/
testcase.c -quiet -dumpdir a- -dumpbase testcase.c -dumpbase-ext .c
-mtune=mips-p8700 -march=rv64gv -mabi=lp64d -misa-spec=2.2 -mtls-dialect=trad
-march=rv64imafdv_zmmul_zaamo_zalrsc_zve32f_zve32x_zve64d_zve64f_zve64x_zvl128b_zvl32b_zvl64b
-O2 -w -fno-dce -o /tmp/ccrRvMDd.s
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$ riscv64-unknown-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-riscv64/bin/riscv64-unknown-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-20260328082301-r16-8319-g48616938660a9f-checking-yes-rtl-df-extra-riscv64/bin/../libexec/gcc/riscv64-unknown-linux-gnu/16.0.1/lto-wrapper
Target: riscv64-unknown-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-isa-spec=2.2 --with-sysroot=/usr/riscv64-unknown-linux-gnu
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=riscv64-unknown-linux-gnu
--with-ld=/usr/bin/riscv64-unknown-linux-gnu-ld
--with-as=/usr/bin/riscv64-unknown-linux-gnu-as --disable-multilib
--enable-libsanitizer --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-20260328082301-r16-8319-g48616938660a9f-checking-yes-rtl-df-extra-riscv64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 16.0.1 20260328 (experimental) (GCC)
