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Re: rearranging REG_ALLOC_ORDER in gcc/config/rs6000/rs6000.h

gp@qnx.com wrote:
Perhaps if I read some of those earlier threads, I would find answers to these kinds of questions. Do you have any URLs? Or maybe a timeframe so I can search the archives?

Past discussions have centered on kernel issues. Whether applications can be marked as FP reg free, in which case the kernel doesn't have to save/restore FP regs as part of the process state. Whether the kernel can be FP reg free, in which case the kernel doesn't have to save/restore FP regs for its own use. In both cases, you have to get this exactly right or you can't do it at all.

I don't recall when exactly this was discussed before.

Jim

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