Fix warnings from MIPS soft-float _FPU_GETCW

[Chris Metcalf]

On 12/4/2012 5:07 PM, Joseph S. Myers wrote:
> Testing for MIPS soft-float showed up compile warnings ("statement
> with no effect") in setfpucw.c arising from the soft-float definition
> of _FPU_GETCW just being "0".  I've applied this patch to make the
> definition actually store 0 in cw, and correspondingly to make
> _FPU_SETCW use cw by casting the value to (void), to make these
> soft-float definitions better at avoiding warnings from use using
> these macros.
>
> 2012-12-04  Joseph Myers  <joseph@codesourcery.com>
>
> 	* sysdeps/mips/fpu_control.h [__mips_soft_float] (_FPU_GETCW):
> 	Define to set cw to 0, now just to plain "0" as a statement.
> 	[__mips_soft_float] (_FPU_SETCW): Define to (void) (cw), rather
> 	than doing nothing with cw.

I see the same warning on tile, because we are using sysdeps/generic/fpu_control.h, which has the same issue.  Do you want to fix that file as well as the mips one while you're at it?  Or should I push that same fix?

-- 
Chris Metcalf, Tilera Corp.
http://www.tilera.com