build log snippet:
=== Output from failing command(s) repeated here ===
* For target hotspot_variant-server_libjvm_objs_barrierSetNMethod.o:
src/hotspot/os_cpu/linux_riscv/orderAccess_linux_riscv.hpp: Assembler messages:
src/hotspot/os_cpu/linux_riscv/orderAccess_linux_riscv.hpp:74: Error: unrecognized opcode `fence.i', extension `zifencei' required
src/hotspot/os_cpu/linux_riscv/orderAccess_linux_riscv.hpp:74: Error: unrecognized opcode `fence.i', extension `zifencei' required
src/hotspot/os_cpu/linux_riscv/orderAccess_linux_riscv.hpp:74: Error: unrecognized opcode `fence.i', extension `zifencei' required

gcc version:
riscv64-unknown-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=riscv64-unknown-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/home/yansendao/software/riscv64-glibc2.38/bin/../libexec/gcc/riscv64-unknown-linux-gnu/13.3.1/lto-wrapper
Target: riscv64-unknown-linux-gnu
Configured with: /home/yansendao/git/riscv-gnu-toolchain/gcc/configure --target=riscv64-unknown-linux-gnu --prefix=/home/yansendao/software/riscv64 --with-sysroot=/home/yansendao/software/riscv64/sysroot --with-pkgversion=g85f323c2dc3 --with-system-zlib --enable-shared --enable-tls --enable-languages=c,c++,fortran --disable-libmudflap --disable-libssp --disable-libquadmath --disable-libsanitizer --disable-nls --disable-bootstrap --src=.././gcc --disable-default-pie --disable-multilib --with-abi=lp64d --with-arch=rv64imafdc --with-tune=rocket --with-isa-spec=20191213 'CFLAGS_FOR_TARGET=-O2 -mcmodel=medlow' 'CXXFLAGS_FOR_TARGET=-O2 -mcmodel=medlow'
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 13.3.1 20240901 (g85f323c2dc3)