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SubjectRe: {standard input}:1174: Error: inappropriate arguments for opcode 'mpydu'
This looks like a buggy compiler to me.


On Sun, 30 Aug 2020, kernel test robot wrote:

> Hi Nicolas,
>
> FYI, the error/warning still remains.
>
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head: e77aee1326f7691763aa968eee2f57db37840b9d
> commit: 602828c1aade576ac5f3fbd59b4eb014c5fc2414 __div64_const32(): improve the generic C version
> date: 12 months ago
> config: arc-allmodconfig (attached as .config)
> compiler: arceb-elf-gcc (GCC) 9.3.0
> 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
> git checkout 602828c1aade576ac5f3fbd59b4eb014c5fc2414
> # save the attached .config to linux build tree
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc
>
> 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 >>):
>
> {standard input}: Assembler messages:
> >> {standard input}:1174: Error: inappropriate arguments for opcode 'mpydu'
>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
>

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