[m-rev.] for review: unboxed float ctor args in LLDS grades on 32-bit

[Julien Fischer]

Hi Peter,

On Tue, 30 Aug 2011, Peter Wang wrote:

> Branches: main
>
> Make it possible to store double-precision `float' constructor arguments in
> unboxed form, in low-level C grades on 32-bit platforms, i.e. `float' (and
> equivalent) arguments may occupy two machine words. However, until we implement
> float registers, this does more harm than good so it remains disabled.

That looks fine (I haven't looked closely at the float registers change
yet though.)

Julien.
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