[sashal-linux-stable:queue-5.4 184/189] arch/powerpc/lib/sstep.c:2670:5: error: label 'unknown_opcode' used but not defined

[kernel test robot <lkp@intel.com>]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git queue-5.4
head:   74cb9d74e6b6e93cae875cc04536f543eacb1704
commit: c3be26ccd0ade97c537a79b2a8467f1f6aaef0e4 [184/189] powerpc/sstep: Fix load-store and update emulation
config: powerpc-mpc8540_ads_defconfig (attached as .config)
compiler: powerpc-linux-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
        # https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git/commit/?id=c3be26ccd0ade97c537a79b2a8467f1f6aaef0e4
        git remote add sashal-linux-stable https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git
        git fetch --no-tags sashal-linux-stable queue-5.4
        git checkout c3be26ccd0ade97c537a79b2a8467f1f6aaef0e4
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=powerpc 

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 >>):

   arch/powerpc/lib/sstep.c: In function 'analyse_instr':
>> arch/powerpc/lib/sstep.c:2670:5: error: label 'unknown_opcode' used but not defined
    2670 |     goto unknown_opcode;
         |     ^~~~
   arch/powerpc/lib/sstep.c:1168:31: error: variable 'rc' set but not used [-Werror=unused-but-set-variable]
    1168 |  unsigned int opcode, ra, rb, rc, rd, spr, u;
         |                               ^~
   cc1: all warnings being treated as errors
--
   arch/powerpc/lib/sstep.c: In function 'analyse_instr':
>> arch/powerpc/lib/sstep.c:2670:5: error: label 'unknown_opcode' used but not defined
    2670 |     goto unknown_opcode;
         |     ^~~~
   arch/powerpc/lib/sstep.c:1168:31: warning: variable 'rc' set but not used [-Wunused-but-set-variable]
    1168 |  unsigned int opcode, ra, rb, rc, rd, spr, u;
         |                               ^~


vim +/unknown_opcode +2670 arch/powerpc/lib/sstep.c

  2657	
  2658		}
  2659	
  2660		if (OP_IS_LOAD_STORE(op->type) && (op->type & UPDATE)) {
  2661			switch (GETTYPE(op->type)) {
  2662			case LOAD:
  2663				if (ra == rd)
  2664					goto unknown_opcode;
  2665				fallthrough;
  2666			case STORE:
  2667			case LOAD_FP:
  2668			case STORE_FP:
  2669				if (ra == 0)
> 2670					goto unknown_opcode;
  2671			}
  2672		}
  2673	

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

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