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MIPS: math-emu: Optimise qNaN handling in `ieee754sp_fdp'
Rewrite qNaN handling in `ieee754sp_fdp' using the `ieee754_class_nan' helper recently added, removing the external call to `ieee754sp_isnan' and reducing the size of code by 16 instructions or 64 bytes. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/9692/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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@ -30,10 +30,11 @@ static inline union ieee754sp ieee754sp_nan_fdp(int xs, u64 xm)
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union ieee754sp ieee754sp_fdp(union ieee754dp x)
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{
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union ieee754sp y;
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u32 rm;
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COMPXDP;
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union ieee754sp nan;
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COMPYSP;
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EXPLODEXDP;
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@ -46,10 +47,11 @@ union ieee754sp ieee754sp_fdp(union ieee754dp x)
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return ieee754sp_nanxcpt(ieee754sp_nan_fdp(xs, xm));
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case IEEE754_CLASS_QNAN:
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nan = ieee754sp_nan_fdp(xs, xm);
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if (!ieee754sp_isnan(nan))
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nan = ieee754sp_indef();
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return nan;
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y = ieee754sp_nan_fdp(xs, xm);
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EXPLODEYSP;
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if (!ieee754_class_nan(yc))
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y = ieee754sp_indef();
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return y;
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case IEEE754_CLASS_INF:
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return ieee754sp_inf(xs);
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