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Message-ID: <202305230231.3Wb7Q68G-lkp@intel.com>
Date: Tue, 23 May 2023 03:00:19 +0800
From: kernel test robot <lkp@...el.com>
To: Christophe Leroy <christophe.leroy@...roup.eu>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
linux-kernel@...r.kernel.org,
Michael Ellerman <mpe@...erman.id.au>,
Nathan Chancellor <nathan@...nel.org>
Subject: arch/powerpc/math-emu/fcmpu.c:13:2: warning: variable 'A_c' set but
not used
Hi Christophe,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 44c026a73be8038f03dbdeef028b642880cf1511
commit: 7245fc5bb7a966852d5bd7779d1f5855530b461a powerpc/math-emu: Remove -w build flag and fix warnings
date: 9 months ago
config: powerpc-randconfig-r022-20230522 (https://download.01.org/0day-ci/archive/20230523/202305230231.3Wb7Q68G-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project b0fb98227c90adf2536c9ad644a74d5e92961111)
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 powerpc cross compiling tool for clang build
# apt-get install binutils-powerpc-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7245fc5bb7a966852d5bd7779d1f5855530b461a
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 7245fc5bb7a966852d5bd7779d1f5855530b461a
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash arch/powerpc/math-emu/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202305230231.3Wb7Q68G-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> arch/powerpc/math-emu/fcmpu.c:13:2: warning: variable 'A_c' set but not used [-Wunused-but-set-variable]
FP_DECL_D(A);
^
include/math-emu/double.h:73:23: note: expanded from macro 'FP_DECL_D'
#define FP_DECL_D(X) _FP_DECL(2,X)
^
include/math-emu/op-common.h:28:14: note: expanded from macro '_FP_DECL'
_FP_I_TYPE X##_c=0, X##_s=0, X##_e=0; \
^
<scratch space>:124:1: note: expanded from here
A_c
^
>> arch/powerpc/math-emu/fcmpu.c:14:2: warning: variable 'B_c' set but not used [-Wunused-but-set-variable]
FP_DECL_D(B);
^
include/math-emu/double.h:73:23: note: expanded from macro 'FP_DECL_D'
#define FP_DECL_D(X) _FP_DECL(2,X)
^
include/math-emu/op-common.h:28:14: note: expanded from macro '_FP_DECL'
_FP_I_TYPE X##_c=0, X##_s=0, X##_e=0; \
^
<scratch space>:130:1: note: expanded from here
B_c
^
>> arch/powerpc/math-emu/fcmpu.c:15:2: warning: variable '_fex' set but not used [-Wunused-but-set-variable]
FP_DECL_EX;
^
include/math-emu/soft-fp.h:94:24: note: expanded from macro 'FP_DECL_EX'
#define FP_DECL_EX int _fex = 0
^
arch/powerpc/math-emu/fcmpu.c:11:1: warning: no previous prototype for function 'fcmpu' [-Wmissing-prototypes]
fcmpu(u32 *ccr, int crfD, void *frA, void *frB)
^
arch/powerpc/math-emu/fcmpu.c:10:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int
^
static
4 warnings generated.
--
>> arch/powerpc/math-emu/fctiw.c:14:2: warning: variable '_fex' set but not used [-Wunused-but-set-variable]
FP_DECL_EX;
^
include/math-emu/soft-fp.h:94:24: note: expanded from macro 'FP_DECL_EX'
#define FP_DECL_EX int _fex = 0
^
arch/powerpc/math-emu/fctiw.c:11:1: warning: no previous prototype for function 'fctiw' [-Wmissing-prototypes]
fctiw(u32 *frD, void *frB)
^
arch/powerpc/math-emu/fctiw.c:10:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int
^
static
2 warnings generated.
--
>> arch/powerpc/math-emu/fctiwz.c:14:2: warning: variable '_fex' set but not used [-Wunused-but-set-variable]
FP_DECL_EX;
^
include/math-emu/soft-fp.h:94:24: note: expanded from macro 'FP_DECL_EX'
#define FP_DECL_EX int _fex = 0
^
arch/powerpc/math-emu/fctiwz.c:11:1: warning: no previous prototype for function 'fctiwz' [-Wmissing-prototypes]
fctiwz(u32 *frD, void *frB)
^
arch/powerpc/math-emu/fctiwz.c:10:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int
^
static
2 warnings generated.
--
>> arch/powerpc/math-emu/fsel.c:14:2: warning: variable '_fex' set but not used [-Wunused-but-set-variable]
FP_DECL_EX;
^
include/math-emu/soft-fp.h:94:24: note: expanded from macro 'FP_DECL_EX'
#define FP_DECL_EX int _fex = 0
^
arch/powerpc/math-emu/fsel.c:11:1: warning: no previous prototype for function 'fsel' [-Wmissing-prototypes]
fsel(u32 *frD, void *frA, u32 *frB, u32 *frC)
^
arch/powerpc/math-emu/fsel.c:10:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int
^
static
2 warnings generated.
vim +/A_c +13 arch/powerpc/math-emu/fcmpu.c
^1da177e4c3f41 arch/ppc/math-emu/fcmpu.c Linus Torvalds 2005-04-16 9
^1da177e4c3f41 arch/ppc/math-emu/fcmpu.c Linus Torvalds 2005-04-16 10 int
^1da177e4c3f41 arch/ppc/math-emu/fcmpu.c Linus Torvalds 2005-04-16 11 fcmpu(u32 *ccr, int crfD, void *frA, void *frB)
^1da177e4c3f41 arch/ppc/math-emu/fcmpu.c Linus Torvalds 2005-04-16 12 {
^1da177e4c3f41 arch/ppc/math-emu/fcmpu.c Linus Torvalds 2005-04-16 @13 FP_DECL_D(A);
^1da177e4c3f41 arch/ppc/math-emu/fcmpu.c Linus Torvalds 2005-04-16 @14 FP_DECL_D(B);
d2b194ed820880 arch/powerpc/math-emu/fcmpu.c Kumar Gala 2008-06-04 @15 FP_DECL_EX;
^1da177e4c3f41 arch/ppc/math-emu/fcmpu.c Linus Torvalds 2005-04-16 16 int code[4] = { (1 << 3), (1 << 1), (1 << 2), (1 << 0) };
^1da177e4c3f41 arch/ppc/math-emu/fcmpu.c Linus Torvalds 2005-04-16 17 long cmp;
^1da177e4c3f41 arch/ppc/math-emu/fcmpu.c Linus Torvalds 2005-04-16 18
:::::: The code at line 13 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2
:::::: TO: Linus Torvalds <torvalds@...970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@...970.osdl.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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