RFR(S) 8075093: Enable UseFPUForSpilling support on SPARC

[Dean Long]

Looks fine.  Was there any measurable performance improvement?

dl

On 9/2/2015 12:51 PM, Vladimir Kozlov wrote:
> https://bugs.openjdk.java.net/browse/JDK-8075093
> http://cr.openjdk.java.net/~kvn/8075093/webrev
>
> SPARC S3 core and beyond have single-cycle MOV instructions (MOVdTOx, 
> MOVxTOd) for FP-to-GP and GP-to-FP register moves. These when used 
> under UseFPUForSpilling can help improve performance.
>
> Contributed-by: Shrinivas Joshi
>
> I reviewed changes.