64-bit and SSE

[dsimcha]

Given that Walter has indicated that 64-bit support is on the agenda for after
D2 is finished and x87 is deprecated in 64-bit mode, will we also see SSE(2)
support in DMD in the relatively near future?  If so, will it be exposed as a
compiler option even when compiling in 32-bit mode?

I've realized that this is kind of important for me since Intel deprecated x87
on its Core 2 and Pentium 4 chips, meaning any old school floating point code
runs painfully slow compared to, say, an AMD chip that still has a decent x87.