tree: https://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc.git topic-zol-remove head: 8ce6b2a73b83a4a77f5444a0a2c27748bb27ea0f commit: d033e9026a729efc2101065b8251f94f78e48566 [10/30] ARC: checksum: elide ZOL, use double load/stores config: arc-tb10x_defconfig (attached as .config) compiler: arc-elf-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout d033e9026a729efc2101065b8251f94f78e48566 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day GCC_VERSION=9.3.0 make.cross ARCH=arc If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): arch/arc/include/asm/checksum.h: Assembler messages: >> arch/arc/include/asm/checksum.h:46: Error: opcode 'ldd' not supported for target arc700 arch/arc/include/asm/checksum.h:47: Error: opcode 'ldd' not supported for target arc700 >> arch/arc/include/asm/checksum.h:46: Error: opcode 'ldd' not supported for target arc700 arch/arc/include/asm/checksum.h:47: Error: opcode 'ldd' not supported for target arc700 -- arch/arc/include/asm/checksum.h: Assembler messages: >> arch/arc/include/asm/checksum.h:46: Error: opcode 'ldd' not supported for target arc700 arch/arc/include/asm/checksum.h:47: Error: opcode 'ldd' not supported for target arc700 -- arch/arc/include/asm/checksum.h: Assembler messages: >> arch/arc/include/asm/checksum.h:46: Error: opcode 'ldd' not supported for target arc700 arch/arc/include/asm/checksum.h:47: Error: opcode 'ldd' not supported for target arc700 >> arch/arc/include/asm/checksum.h:46: Error: opcode 'ldd' not supported for target arc700 arch/arc/include/asm/checksum.h:47: Error: opcode 'ldd' not supported for target arc700 >> arch/arc/include/asm/checksum.h:46: Error: opcode 'ldd' not supported for target arc700 arch/arc/include/asm/checksum.h:47: Error: opcode 'ldd' not supported for target arc700 >> arch/arc/include/asm/checksum.h:46: Error: opcode 'ldd' not supported for target arc700 arch/arc/include/asm/checksum.h:47: Error: opcode 'ldd' not supported for target arc700 >> arch/arc/include/asm/checksum.h:46: Error: opcode 'ldd' not supported for target arc700 arch/arc/include/asm/checksum.h:47: Error: opcode 'ldd' not supported for target arc700 >> arch/arc/include/asm/checksum.h:46: Error: opcode 'ldd' not supported for target arc700 arch/arc/include/asm/checksum.h:47: Error: opcode 'ldd' not supported for target arc700 >> arch/arc/include/asm/checksum.h:46: Error: opcode 'ldd' not supported for target arc700 arch/arc/include/asm/checksum.h:47: Error: opcode 'ldd' not supported for target arc700 >> arch/arc/include/asm/checksum.h:46: Error: opcode 'ldd' not supported for target arc700 arch/arc/include/asm/checksum.h:47: Error: opcode 'ldd' not supported for target arc700 vim +/ldd +46 arch/arc/include/asm/checksum.h ca15c8ecd588dd Vineet Gupta 2013-01-18 33 ca15c8ecd588dd Vineet Gupta 2013-01-18 34 /* ca15c8ecd588dd Vineet Gupta 2013-01-18 35 * This is a version of ip_compute_csum() optimized for IP headers, ca15c8ecd588dd Vineet Gupta 2013-01-18 36 * which always checksum on 4 octet boundaries. d033e9026a729e Vineet Gupta 2020-04-08 37 * @ihl comes from IP hdr and is number of 4-byte words d033e9026a729e Vineet Gupta 2020-04-08 38 * optimized for 5 words (no loop taken) ca15c8ecd588dd Vineet Gupta 2013-01-18 39 */ ca15c8ecd588dd Vineet Gupta 2013-01-18 40 static inline __sum16 ca15c8ecd588dd Vineet Gupta 2013-01-18 41 ip_fast_csum(const void *iph, unsigned int ihl) ca15c8ecd588dd Vineet Gupta 2013-01-18 42 { d033e9026a729e Vineet Gupta 2020-04-08 43 unsigned int tmp, sum; d033e9026a729e Vineet Gupta 2020-04-08 44 u64 dw1, dw2; ca15c8ecd588dd Vineet Gupta 2013-01-18 45 ca15c8ecd588dd Vineet Gupta 2013-01-18 @46 __asm__( d033e9026a729e Vineet Gupta 2020-04-08 47 " ldd.ab %0, [%4, 8] \n" d033e9026a729e Vineet Gupta 2020-04-08 48 " ldd.ab %1, [%4, 8] \n" d033e9026a729e Vineet Gupta 2020-04-08 49 " sub %5, %5, 4 \n" d033e9026a729e Vineet Gupta 2020-04-08 50 " add.f %3, %L0, %H0 \n" d033e9026a729e Vineet Gupta 2020-04-08 51 " adc.f %3, %3, %L1 \n" d033e9026a729e Vineet Gupta 2020-04-08 52 " adc.f %3, %3, %H1 \n" d033e9026a729e Vineet Gupta 2020-04-08 53 "1: ld.ab %2, [%4, 4] \n" d033e9026a729e Vineet Gupta 2020-04-08 54 " adc.f %3, %3, %2 \n" d033e9026a729e Vineet Gupta 2020-04-08 55 #ifdef CONFIG_ARC_LACKS_ZOL d033e9026a729e Vineet Gupta 2020-04-08 56 " dbnz %5, 1b \n" d033e9026a729e Vineet Gupta 2020-04-08 57 #else d033e9026a729e Vineet Gupta 2020-04-08 58 " sub_s %5, %5, 1 \n" d033e9026a729e Vineet Gupta 2020-04-08 59 " brne_s %5, 0, 1b \n" d033e9026a729e Vineet Gupta 2020-04-08 60 #endif d033e9026a729e Vineet Gupta 2020-04-08 61 " add.cs %3, %3, 1 \n" d033e9026a729e Vineet Gupta 2020-04-08 62 d033e9026a729e Vineet Gupta 2020-04-08 63 : "=&r" (dw1), "=&r" (dw2), "=&r" (tmp), "=&r" (sum), d033e9026a729e Vineet Gupta 2020-04-08 64 "+&r" (iph), "+&r"(ihl) d033e9026a729e Vineet Gupta 2020-04-08 65 : d033e9026a729e Vineet Gupta 2020-04-08 66 : "cc", "memory"); ca15c8ecd588dd Vineet Gupta 2013-01-18 67 ca15c8ecd588dd Vineet Gupta 2013-01-18 68 return csum_fold(sum); ca15c8ecd588dd Vineet Gupta 2013-01-18 69 } d033e9026a729e Vineet Gupta 2020-04-08 70 #define ip_fast_csum ip_fast_csum ca15c8ecd588dd Vineet Gupta 2013-01-18 71 :::::: The code at line 46 was first introduced by commit :::::: ca15c8ecd588dda4377d18d6d27bc1e87b4177cb ARC: Checksum/byteorder/swab routines :::::: TO: Vineet Gupta <vgupta@xxxxxxxxxxxx> :::::: CC: Vineet Gupta <vgupta@xxxxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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