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| author | Maciej W. Rozycki <macro@linux-mips.org> | 2015-04-03 23:25:38 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2015-04-08 01:09:35 +0200 |
| commit | c9a1084516e35ff4f1d5b83e77530ed019ca364b (patch) | |
| tree | de1cfa5b17d0e2db63616994f42fb12de8b207c6 /arch/mips/math-emu/ieee754dp.c | |
| parent | d5afa7e905544a3d9e2bb29d9cafebc8e544c978 (diff) | |
| download | lwn-c9a1084516e35ff4f1d5b83e77530ed019ca364b.tar.gz lwn-c9a1084516e35ff4f1d5b83e77530ed019ca364b.zip | |
MIPS: math-emu: Optimise NaN handling in comparisons
We have the input operands already classified in `ieee754sp_cmp' and
`ieee754dp_cmp' comparison operations, so use the class obtained to tell
NaNs and numbers apart rather than classifying inputs again for this
purpose, reducing the size of code by 24 and 40 instructions or 96 and
160 bytes respectively.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/9689/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/math-emu/ieee754dp.c')
| -rw-r--r-- | arch/mips/math-emu/ieee754dp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/mips/math-emu/ieee754dp.c b/arch/mips/math-emu/ieee754dp.c index 49c811a920b5..921535b5c3a6 100644 --- a/arch/mips/math-emu/ieee754dp.c +++ b/arch/mips/math-emu/ieee754dp.c @@ -32,7 +32,7 @@ int ieee754dp_class(union ieee754dp x) int ieee754dp_isnan(union ieee754dp x) { - return ieee754dp_class(x) >= IEEE754_CLASS_SNAN; + return ieee754_class_nan(ieee754dp_class(x)); } static inline int ieee754dp_issnan(union ieee754dp x) |