From: kernel test robot <lkp@intel.com>
To: Matt Turner <mattst88@gmail.com>
Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org,
Magnus Lindholm <linmag7@gmail.com>
Subject: arch/powerpc/math-emu/fsqrts.c:39:2: warning: variable '_FP_PACK_CANONICAL_T_e' set but not used
Date: Fri, 23 Oct 2026 22:46:44 +0200 [thread overview]
Message-ID: <202610232211.PH7EKsOW-lkp@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 7a78f7ba9f24962c8033e0152bf34a7903ff61ba
commit: b74843b38da8f1186fd7d447646c835b47096a15 alpha: determine tininess after rounding in the FP emulation
date: 3 days ago
config: powerpc64-randconfig-r2103-20261023 (https://download.01.org/0day-ci/archive/20261023/202610232211.PH7EKsOW-lkp@intel.com/config)
compiler: clang version 21.1.6 (https://github.com/llvm/llvm-project a832a5222e489298337fbb5876f8dcaf072c5cca)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261023/202610232211.PH7EKsOW-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Fixes: b74843b38da8 ("alpha: determine tininess after rounding in the FP emulation")
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202610232211.PH7EKsOW-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> arch/powerpc/math-emu/fsqrts.c:39:2: warning: variable '_FP_PACK_CANONICAL_T_e' set but not used [-Wunused-but-set-variable]
39 | __FP_PACK_DS(frD, R);
| ^
arch/powerpc/include/asm/sfp-machine.h:185:5: note: expanded from macro '__FP_PACK_DS'
185 | _FP_PACK_CANONICAL(S, 1, __X); \
| ^
include/math-emu/op-common.h:145:6: note: expanded from macro '_FP_PACK_CANONICAL'
145 | FP_DECL_##fs(_FP_PACK_CANONICAL_T); \
| ^
<scratch space>:29:1: note: expanded from here
29 | FP_DECL_S
| ^
include/math-emu/single.h:62:23: note: expanded from macro 'FP_DECL_S'
62 | #define FP_DECL_S(X) _FP_DECL(1,X)
| ^
include/math-emu/op-common.h:28:32: note: expanded from macro '_FP_DECL'
28 | _FP_I_TYPE X##_c=0, X##_s=0, X##_e=0; \
| ^
<scratch space>:32:1: note: expanded from here
32 | _FP_PACK_CANONICAL_T_e
| ^
>> arch/powerpc/math-emu/fsqrts.c:39:2: warning: variable '_FP_PACK_CANONICAL_T_e' set but not used [-Wunused-but-set-variable]
arch/powerpc/include/asm/sfp-machine.h:189:6: note: expanded from macro '__FP_PACK_DS'
189 | _FP_PACK_CANONICAL(D, 2, X); \
| ^
include/math-emu/op-common.h:145:6: note: expanded from macro '_FP_PACK_CANONICAL'
145 | FP_DECL_##fs(_FP_PACK_CANONICAL_T); \
| ^
<scratch space>:87:1: note: expanded from here
87 | FP_DECL_D
| ^
include/math-emu/double.h:73:23: note: expanded from macro 'FP_DECL_D'
73 | #define FP_DECL_D(X) _FP_DECL(2,X)
| ^
include/math-emu/op-common.h:28:32: note: expanded from macro '_FP_DECL'
28 | _FP_I_TYPE X##_c=0, X##_s=0, X##_e=0; \
| ^
<scratch space>:90:1: note: expanded from here
90 | _FP_PACK_CANONICAL_T_e
| ^
2 warnings generated.
--
>> arch/powerpc/math-emu/fsqrt.c:38:2: warning: variable '_FP_PACK_CANONICAL_T_e' set but not used [-Wunused-but-set-variable]
38 | __FP_PACK_D(frD, R);
| ^
arch/powerpc/include/asm/sfp-machine.h:176:2: note: expanded from macro '__FP_PACK_D'
176 | _FP_PACK_CANONICAL(D, 2, X); \
| ^
include/math-emu/op-common.h:145:6: note: expanded from macro '_FP_PACK_CANONICAL'
145 | FP_DECL_##fs(_FP_PACK_CANONICAL_T); \
| ^
<scratch space>:19:1: note: expanded from here
19 | FP_DECL_D
| ^
include/math-emu/double.h:73:23: note: expanded from macro 'FP_DECL_D'
73 | #define FP_DECL_D(X) _FP_DECL(2,X)
| ^
include/math-emu/op-common.h:28:32: note: expanded from macro '_FP_DECL'
28 | _FP_I_TYPE X##_c=0, X##_s=0, X##_e=0; \
| ^
<scratch space>:22:1: note: expanded from here
22 | _FP_PACK_CANONICAL_T_e
| ^
1 warning generated.
vim +/_FP_PACK_CANONICAL_T_e +39 arch/powerpc/math-emu/fsqrts.c
^1da177e4c3f415 arch/ppc/math-emu/fsqrts.c Linus Torvalds 2005-04-16 38
d2b194ed820880e arch/powerpc/math-emu/fsqrts.c Kumar Gala 2008-06-04 @39 __FP_PACK_DS(frD, R);
:::::: The code at line 39 was first introduced by commit
:::::: d2b194ed820880eb19c43b9c10d9f5f30026ee54 powerpc/math-emu: Use kernel generic math-emu code
:::::: TO: Kumar Gala <galak@kernel.crashing.org>
:::::: CC: Kumar Gala <galak@kernel.crashing.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-10-23 20:47 UTC|newest]
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