[jpirko-mlxsw:jiri_devel_linecards 7/7] /tmp/nls_cp857-877515.s:65: Error: unrecognized opcode `zext.b a0, a0'

[jpirko-mlxsw:jiri_devel_linecards 7/7] /tmp/nls_cp857-877515.s:65: Error: unrecognized opcode `zext.b a0, a0'

[kernel test robot]

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TO: Jiri Pirko <jiri@nvidia.com>

tree:   https://github.com/jpirko/linux_mlxsw jiri_devel_linecards
head:   9f31749a2e3b71eb5e1e7fdb194c3cc72861f26d
commit: 9f31749a2e3b71eb5e1e7fdb194c3cc72861f26d [7/7] x
config: riscv-randconfig-r014-20201217 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project cee1e7d14f4628d6174b33640d502bff3b54ae45)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install riscv cross compiling tool for clang build
        # apt-get install binutils-riscv64-linux-gnu
        # https://github.com/jpirko/linux_mlxsw/commit/9f31749a2e3b71eb5e1e7fdb194c3cc72861f26d
        git remote add jpirko-mlxsw https://github.com/jpirko/linux_mlxsw
        git fetch --no-tags jpirko-mlxsw jiri_devel_linecards
        git checkout 9f31749a2e3b71eb5e1e7fdb194c3cc72861f26d
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   /tmp/nls_cp857-877515.s: Assembler messages:
>> /tmp/nls_cp857-877515.s:65: Error: unrecognized opcode `zext.b a0,a0'
   clang-12: error: assembler command failed with exit code 1 (use -v to see invocation)

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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