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Re: CVS commit: [matt-nb5-mips64] src/sys/arch/mips
On Sat, Jan 30, 2010 at 11:49:31PM +0000, Matt Thomas wrote:
> Change MIPS_CURLWP from s7 to t8. In a MALTA64 kernel, s6 is used
> 9155 times which means the compiler could really use s7 is was free
> to do so. The least used temporary was t8 (288 times). Once the
> kernel was switched to use t8 for MIPS_CURLWP, s7 was used 7524
Huh. That surprises me slightly. Good to know though.
Remember to bump the kernel version when you merge the branch, or
anyone using modules will get a nasty surprise :-)
> [For some reason, pre-change t1 was never used and post change t2 was never
> used. Not sure why.]
gcc does not seem to be very deterministic about this kind of thing.
David A. Holland
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