Difference between 32-bit SPARCv9 and SPARCv8+?

[John Paul Adrian Glaubitz]

Hi Eric!

On 1/23/22 10:18, Eric Botcazou wrote:
>> Is this intentional? If yes, what is the exact difference between V8+ and
>> 32-bit V9?
> 
> V8+ requires the full 64-bit registers to be preserved by the kernel, whereas 
> 32-bit V9 does not.

OK, thanks for the clarification.

Asking on top of that: Is it possible to configure gcc on sparc* with -mv8plus
enabled by default? There seems to be only an option for setting the default
value for -mcpu=, but -mv8plus doesn't seem to be supported as a default baseline
in configure.

Adrian

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 .''`.  John Paul Adrian Glaubitz
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