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Re: [PATCH] SPARC psABI fix, callee returns struct checking.
From: Carlos O'Donell <carlos@codesourcery.com>
Date: Wed, 8 Mar 2006 18:03:03 -0500
> My first priority if conformance to the existing psABI.
Of course.
> Accept the patch and I'll subsequently add a flag to turn it all off if
> you want really fast performance (e.g. remove caller and callee side
> fiddling and just assume the pointer to the save area is always there
> and the correct size). Please start thinking of a flag name.
>
> Ok?
I really have a hard time accepting a load of an instruction that will
use up an unnecessary data TLB entry (a scarce and precious resource)
that is unneeded %99.9999999 of the time.
I'd be more happy if you think you can come up with a way to be
compliant, yet avoid the load of the unimp instruction.