https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119275
Bug ID: 119275
Summary: ICE: in gen_lowpart_general, at rtlhooks.cc:57 with
-O2 -march=rv64gv -mrvv-vector-bits=zvl
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: riscv64-unknown-linux-gnu
Created attachment 60744
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=60744&action=edit
reduced testcase
Compiler output:
$ riscv64-unknown-linux-gnu-gcc -O2 -march=rv64gv -mrvv-vector-bits=zvl
testcase.c
during RTL pass: reload
testcase.c: In function 'foo':
testcase.c:23:1: internal compiler error: in gen_lowpart_general, at
rtlhooks.cc:57
23 | }
| ^
0x364e6c1 internal_error(char const*, ...)
/repo/gcc-trunk/gcc/diagnostic-global-context.cc:517
0x10e4f17 fancy_abort(char const*, int, char const*)
/repo/gcc-trunk/gcc/diagnostic.cc:1722
0xb8e9ab gen_lowpart_general(machine_mode, rtx_def*)
/repo/gcc-trunk/gcc/rtlhooks.cc:57
0x1cef4d8 riscv_legitimize_move(machine_mode, rtx_def*, rtx_def*)
/repo/gcc-trunk/gcc/config/riscv/riscv.cc:3601
0x25e5800 gen_movdi(rtx_def*, rtx_def*)
/repo/gcc-trunk/gcc/config/riscv/riscv.md:2492
0x141bb80 rtx_insn* insn_gen_fn::operator()<rtx_def*, rtx_def*>(rtx_def*,
rtx_def*) const
/repo/gcc-trunk/gcc/recog.h:472
0x141bb80 emit_move_ccmode
/repo/gcc-trunk/gcc/expr.cc:4455
0x141bb80 emit_move_insn_1(rtx_def*, rtx_def*)
/repo/gcc-trunk/gcc/expr.cc:4600
0x141c009 emit_move_insn(rtx_def*, rtx_def*)
/repo/gcc-trunk/gcc/expr.cc:4751
0x1672ffc lra_emit_move(rtx_def*, rtx_def*)
/repo/gcc-trunk/gcc/lra.cc:509
0x168d0c3 curr_insn_transform
/repo/gcc-trunk/gcc/lra-constraints.cc:4812
0x168ef53 lra_constraints(bool)
/repo/gcc-trunk/gcc/lra-constraints.cc:5569
0x1676624 lra(_IO_FILE*, int)
/repo/gcc-trunk/gcc/lra.cc:2449
0x161fcef do_reload
/repo/gcc-trunk/gcc/ira.cc:5987
0x161fcef execute
/repo/gcc-trunk/gcc/ira.cc:6175
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-20250313133031-r15-8032-g6e47e6d48844ee-checking-yes-rtl-df-extra-riscv64/bin/../libexec/gcc/riscv64-unknown-linux-gnu/15.0.1/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-cloog --with-ppl --with-isl --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-20250313133031-r15-8032-g6e47e6d48844ee-checking-yes-rtl-df-extra-riscv64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.0.1 20250313 (experimental) (GCC)
