Re: MLton broken FFI on AMD64???

Matthew Fluet <[email protected]>
Newsgroups gmane.comp.lang.ml.mlton.devel
Message-ID <[email protected]> 
On Fri, Feb 4, 2011 at 10:01 AM, Matthew Fluet <[email protected]> wrote:
> Interestingly, it seems that MacOSX also demands that rax be set to
> the the number of floating point parameters.
>
> It seems that setting rax for every FFI call on AMD64 would be the
> simplest solution.

I committed a patch that always sets %rax to the number of XMMS
registers passed for non-win64 AMD64 platforms; since %rax is caller
save, this doesn't really affect register allocation and just incurs
an immediate->register move instruction.  That solved the issue on
Linux and MacOSX (and presumably on other Unices).
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