diff options
| author | Maciej W. Rozycki <macro@linux-mips.org> | 2015-04-04 00:25:38 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2015-04-08 01:09:35 +0200 |
| commit | c9a1084516e35ff4f1d5b83e77530ed019ca364b (patch) | |
| tree | de1cfa5b17d0e2db63616994f42fb12de8b207c6 /arch/mips/math-emu/dp_cmp.c | |
| parent | MIPS: math-emu: Reinstate sNaN quieting handlers (diff) | |
| download | linux-c9a1084516e35ff4f1d5b83e77530ed019ca364b.tar.xz linux-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/dp_cmp.c')
| -rw-r--r-- | arch/mips/math-emu/dp_cmp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/mips/math-emu/dp_cmp.c b/arch/mips/math-emu/dp_cmp.c index f8fbb23bd0fb..99623c12ef03 100644 --- a/arch/mips/math-emu/dp_cmp.c +++ b/arch/mips/math-emu/dp_cmp.c @@ -35,7 +35,7 @@ int ieee754dp_cmp(union ieee754dp x, union ieee754dp y, int cmp, int sig) FLUSHYDP; ieee754_clearcx(); /* Even clear inexact flag here */ - if (ieee754dp_isnan(x) || ieee754dp_isnan(y)) { + if (ieee754_class_nan(xc) || ieee754_class_nan(yc)) { if (sig || xc == IEEE754_CLASS_SNAN || yc == IEEE754_CLASS_SNAN) ieee754_setcx(IEEE754_INVALID_OPERATION); |