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Commit b0c2f8fb authored by Maciej W. Rozycki's avatar Maciej W. Rozycki Committed by Ralf Baechle
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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: default avatarMaciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/9692/


Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 42fa2424

arch/mips/math-emu/sp_fdp.c

+7 −5
Original line number Diff line number Diff line
@@ -30,10 +30,11 @@ static inline union ieee754sp ieee754sp_nan_fdp(int xs, u64 xm) 


union ieee754sp ieee754sp_fdp(union ieee754dp x)

{

	union ieee754sp y;

	u32 rm;



	COMPXDP;

	union ieee754sp nan;

	COMPYSP;



	EXPLODEXDP;
@@ -46,10 +47,11 @@ union ieee754sp ieee754sp_fdp(union ieee754dp x) 
		return ieee754sp_nanxcpt(ieee754sp_nan_fdp(xs, xm));



	case IEEE754_CLASS_QNAN:

		nan = ieee754sp_nan_fdp(xs, xm);

		if (!ieee754sp_isnan(nan))

			nan = ieee754sp_indef();

		return nan;

		y = ieee754sp_nan_fdp(xs, xm);

		EXPLODEYSP;

		if (!ieee754_class_nan(yc))

			y = ieee754sp_indef();

		return y;



	case IEEE754_CLASS_INF:

		return ieee754sp_inf(xs);